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Патент USA US2110534

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March 8, 1938.
2,110,534
N. L. SNOW El' AL
SOOT BLOWER
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1 2,110,534
¿UNITED STATES
PATENT ori-‘ica ‘
2.110.534
soo'r Bmwaa
Norman L. Snow. New Canaan, Conn., and Willis'
P. Thomas, Highland Park, Harry E. Brelsfcrd,
Birmingham. and Curtis L. Howse `and Frank
Bowers, Detroit, Mich., assignors tc Diamond
Power Specialty Corporation, Detroit, Mich., a
corporation of Michigan
'
Application December 27, 1982,> Serial No. 849,109
I 23 Claims.
(Cl. 122-392)
This invention relates to a fluid heater cleaner '
of the character in which a blower element is
arranged to discharge cleaning fluid adjacent por
tions‘of a fluid heater to be cleaned. '
One of the primary objects of this invention
is to provide a fluid heater cleaner of the above
mentioned character which will include means
for initiating the operation of the cleaner and
means for terminating the actuation of the
cleaner after a predetermined desired operation
thereof.
-
The invention further contemplates the pro
vision of means whereby the extent of operation
of the cleaner may be varied at the will of the
operator to the end that the cleaner may be
caused to operate for s'hort or long periods of
time as desired.
The above and numerous other objects and
advantages of this invention will become more
20 apparent as the following description proceeds,
particularly when reference is had to the accom
panying drawings, wherein:
Fig. 1 is a longitudinal sectional view through
a blower head constructed in accordance with
the teachings of this invention;
Fig. 2 is a sectional view taken substantially
on the line 2-2 of Fig. 1;
'
Fig. 3 is a fragmentary sectional view taken
substantially on the line 3_4 of Fig. 1;
Fig. 4 is a fragmentary sectional view similar
30
tovFig. l showing a slightly modified form ci’ con
struction;
_
Fig. 5 is a view similar to Fig. 4 showing the
. parts of the construction in one of the positions
. which they assume during a portion of the oper
ation of the construction;
Fig. 6 is a sectional view taken substantially
on the line 6--6 of Fig. 5;
.
Fig. 'l is a perspective view with parts broken
40 away of a slightly modified form of control mech
anism;
'
Fig. 8 is a longitudinal sectional view through
a portion of the structure shown in Fig. 7 ;
Fig.` 9 is an enlarged sectional viewn through
‘ -a portion of thestructure shown in Fig. 8;
Fig. 10 is an end elevational view partly in
section of a further modified form of construc
tion;
>
'
Fig. 11 is a sectional view taken substantially
on the line ii--ll of Fig. l0;`
Fig. 12 is a view similar to Fig. 10 showing a
further modified form of construction;
Fig. 13 is a side elevational View of a portion
55 of the structure shown in Fig. 1.2;
Fig. 14 is a fragmentary sectional view taken
substantially on the line il-il of Fig. 12;
Fig. 15 is a detail perspective view of one of
the elements forming a part of the structure
shown in Fig. 12;
Fig. 16 is a diagrammatic view of a fluid heater
showing a plurality of cleaners associated with
the same and a modified means for controlling _
these cleaners;
Fig. 17 is a fragmentary and elevational view 10
of the structure shown in Fig. 16;
Fig. 18 is a perspective view of a central con
trol means for a plurality of blowers;
Fig. 19 is a semi-diagrammatic sectional view
showing a further modified form of control
means;
Fig. 20 is a sectional view taken substantially
on the line 2li-_20 of Fig. 19;
Fig. 21 is a view similar to Fig. 19 showing a
further embodiment of the control mechanism; 20
Fig. 22 is a view similar to Fig. 19 showing a
further modified form of the invention;
Fig. 23 is a sectional view through a portion of
the structure shown in Fig. 22;
Fig. 24 is a view similar to Fig. 19 showing a 25
further embodiment of the inventive idea;
Fig. 25 is an enlarged elevational view of a
portion of the structure shown in Fig. 24; and
Fig. 26 is a detail end elevational view of the
structure shown in Fig. 25. .
Referring then particularly to the drawings
wherein like reference characters designate cor
responding parts throughout all views, there is
30
shown in Fig. 1 a blower element 25 which, it
will be understood, extends into a iluid heater 35
(not shown) and is provided with a suitable nozzle
or nozzles (not shown) for discharging cleaning
fluid adjacent the portions of the fluid heater
to be cleaned. The blower element is journaled
in a head designated generally by the reference 40
character 26,'1this head including means forro
tating or oscillating the blower element, means
for controlling the admission of cleaning ñuid
to the blower element, and means for controlling
the extent of operation .of the blower element, 45
as will hereinafter be more fully described.
l
'I'he head comprises a housing 21 which may be
suitably mounted, if desired, on the wall of the
fluid heater cleaner in any desired manner-(not
shown). A cover 28 closes one side of the `hous 50
ing 21, and this cover carries a bushing 29 which
provides a bearing for the end of the blower ele
ment 25. The cover plate also receives one end
of a sealing bushing 30 which is carried in a
valve housing designated generally by the refer
2
2,110,684.
ence character 3|. This valve housing provides
tion of the valve is shown in dotted lines in Fig. 3,
a cleaning fluid inlet passage 32 to which a source and by reference to this dotted showing it will
oi' supply of cleaning iluid may be connected in be noted that fluid under pressure may pass
any desired manner.
from the left hand end of chamber 5i to the right,
The mechanism for rotating the blower ele _ hand end thereof by way oi' passage 52. From the
ment comprises a gear 35 fixed as by a set screw
or the like 36 to the blower element. Engaging
this gear is a pinion 31 which is journaled on a
shaft 38 mounted in the housing 21. Mounted
on the hub of pinion 31 and ilxed thereto is a
ratchet wheel 39 so that upon rotation of this
ratchet wheel the pinion 31 is rotated. thus driv
. ing the gear 35 and blower element 25.
Formed in caps secured to the housing 21 are
cylinders 40 and 4|. These cylinders are aligned,
and mounted inthe same are pistons 42 and 43,
these pistons being connected by a yoke 44. The
yoke is provided with a slot 45 through which the
shaft 36 extends, so that the pistons may recipro
cate in their respective cylinders and impart re
ciprocatory movement to the yoke.
Pivotally secured to the yoke 44 are pawls 46
and 41, and springs associated with these pawls
constantly urge the same into engagement with
the ratchet wheel 39. The pawl 46 is mounted
above the longitudinal axis of the yoke 44, while
the pawl 41 is mounted below 'the longitudinal
axis of this yoke. The arrangement is such that
as the yoke is moved to the left, as viewed in
Fig. 2 of the drawings, counter-clockwise move
ment is imparted to ratchet wheel 39 by pawl 46,
the pawl 41 idling over the teeth of the ratchet
wheel during this movement. Upon reverse
movement of the yoke or movement thereof to
f' ward the right, as viewed in Fig. 2, pawl 41 im
parts counter-clockwise movement to the ratchet
wheel 39, pawl 43 idling over the teeth of the
ratchet wheel during this movement of the yoke.
Thus it will be apparent that reciprocation of
40 the pistons 42 and 43 and thus of the yoke drives
the ratchet wheel 39 continuously in one direc
tion and thus the blower element 25.
For admitting fluid under pressure to the cylin
ders 46 and 4| to thus eilect a reciprocation oi.'
the pistons in these cylinders, there is provided
a valve 50 mounted for reciprocation in a valve
chamber 5| formed in the lower end of the hous
ing 21. The valve member comprises an elongated
tubular member providing a central passage 52.
50 The valve member is provided on its outer periph
ery and adjacent its ends with the relatively wide
A annularl channels 53 and 54.
Fluid under pressure is supplied to chamber 5|
by a conduit 55, this conduit discharging the
55 fluid into one end of the chamber.
When the
valve is in the position shown in Fig. 3 of the
drawings, iluid under pressure may pass from
conduit 55 by way of channel 53 into a passage
56 which communicates with the end of cylin
60 der 4|. At the same time channel 54 places
passage 51 which communicates with the end
of cylinder 40 in communication with the interior
of housing 21 by way of a passage 58 formed in
the housing adjacent the valve chamber 5|
therein. Thus it will be apparent that in the
position of the parts shown in the drawings, the
cylinders have completed their movement in one
direction and the valve'has been shifted so that
the pistons are about to start their movement in
70 the other direction.
It will be understood that when the valve 5|! is
shifted to the right, as viewed in Fig. 3 of the
drawings, the cylinder 4i will be connected to the
exhaust. while cylinder 4l will be connected to
75 the source of iluid under pressure. Such a posi
right hand en`d of the chamber the iluid under ‘
pressure may enter channel 54 by way of the by
pass formed by bore 59, and from the channel
54 the fluid under pressure may of course enter
the cylinder 40 by way of passage 51. At this
time cylinder 4| will be connected to the exhaust
by way oi channel 53 which places the passage 5‘6
in communication with passage 66 which opens
to the interior of the housing 21.
For actuating the valve, there is provided an
arm 6| which is fixed to the valve and which has
a bifurcated end 62 which embraces a rod 63
carried by lugs 64 which depend from the yoke
44. Springs 65 and 6'6 are mounted on the rod
63 between the lugs 64 and the arm 6|, with the
result that these springs act on the arm 6| to
urge the same in one direction or the other.
Itv is of course desirable that the movement
of the valve be substantially instantaneous as
the pistons approach the limits of their move
ment in one direction or the other.
For this
purpose locking means is provided for restraining
the valve against movement until the pistons
have substantially completed their strokes. This
locking means comprises levers 10 pivotally
mounted within housing 21 on opposite sides of
arm 6I. The levers 10 have arms 1| connected
by a spring 12 which functions to normally urge
the levers about their pivots or into engagement
with the arm 6|. A pin 13 ilxed to the yoke 44
is arranged to alternately engage the arms 1|
to thus alternately move the levers to their re
leasing positions.
Each lever is provided on its under face with
shoulders 14 and 15 adapted to engage the sides
of arm 6|. These shoulders limit movement of
the arm as will now be described.
With reference to Fig. 2 of the drawings, it
will be noted that the valve 50 has been moved to
a position adjacent the right hand end of cham
ber 5|. When the valve is in this position the
shoulder 'l5 on the lever to the right of the arm
6| is in engagement with this arm to thus limit
further movement of the valve to the right. The
shoulder 14 on the lever on the left hand side
of the arm, as viewed in Fig. 2, is engaging the
arm to hold the valve against movement to the
left. At this time ñuid is being admitted to
cylinder 4| while cylinder 40 has been opened
to the exhaust, with the result that the pistons
and the yoke are about to move to the left. As
the yoke moves to the left it will be apparent that
spring 65 will be compressed by the arm 6| and
lug 64. The valve, however, will not >be moved
to the left until pin 13 strikes the arm associated 04
with the lever to the left oi arm 6I. At this
instant this lever will be raised to release the en
gagement of its shoulder 14 with the edge of arm
6|, with the result that at this instant spring 65
will act to move the arm 6| and the valve to
the left until the arm engages the shoulder 15
formed on the lever at the left side of the arm.
Thus it will be apparent that as the yoke is re
ciprocated the valve 50 will be periodically actu
ated to alternately place the cylinders in com
munication with a source of iluid under pressure
and with an exhaust.- By properly locating the
pin 13, cushioning of the pistons at either or
both ends of their strokes may be effected.
As brought out before, ñuid under pressure
2,110,534.
3
is supplied to the valve chamber by way oi’ con
duit 55, and this conduit has its inlet end tapped
nately place the cylinders 48 and 4| in communi-
into a chamber 15 formed in the valve housing
3|. A passage 11 provides communication be
tween chamber 16 and passage 32, and a valve
exhaust.
18 is provided for normally closing this passage,
there being provided a spring 19 for holding the
valve 18 in its closed position. Formed in the
valve housing adjacent chamber 16 is a second
10 chamber 80 which communicates with the inte
rior of the blower element by way of a passage
8|. A> valve seat 82 is disposed between cham
bers 16 and 80, and the valve 18 cooperates with
this valve seat to close communication between
15 chambers 16 and 80 when the valve 18 has been
shifted to the left, as viewed in Fig. 1 oi.' the
drawings, to place passage 32 in communication
with chamber 16.
For actuating the valve 18, there> is provided
20 a stem 83 normally held in valve-releasing posi
tion by a spring 84. A lever 85 pivotally secured
to the end of the valve casing 3| has a cam face
86 adapted to engage the end of the stem 83
when this lever is actuated by a depending actu
25 ating chain 81.
For controlling the admission of cleaning iiuid
to the blower element, there is provided a valve
9U mounted in the valve casing 3|. The stem
9| of this valve is secured to a piston 82 mounted
30 for reclprocation in a cylinder‘93.
A spring 9d
disposed in this cylinder operates to close the
valve 90 when the> fluid pressure, which builds
up back of the piston by virtue of the leakage
of the cleaning fluid around the same, balances
the fluid pressure acting on the front face oi
the piston. Whenever chamber 93 is opened to
the exhaust, as will hereinafter be described, the
pressure of the cleaning fluid in passage 32 act
ing on the forward face of piston 92 moves this
piston to the right, as viewed in Fig. l, to thus
open valve 9@ and admit cleaning fluid to the
blower element.
For periodically placing cylinder 93 in coni
munication with the exhaust as the blower ele
' ment is rotated, there is provided a cam ab fixed
to the gear 35 for rotation with the same. This
cam is arranged to engage a lever @E pivotally
secured to the housing 2l, and this lever has a
cam face al arranged to engage a valve 953. This
valve when actuated by lever 9d places chamber
d@ in communication with the atmosphere by
way of passages illil. A conduit iti provides
communication between chamber 99 and cylin
der 93, with the result that when valve 9d is actu»J
- ated, cylinder 93 is placed in communication with
the atmosphere, and thus valve at is opened. A
spring |82 closes valve 9B when the lever se drops
out of engagement with this valve.
In use, operation of this form of construction
may be initiated by pulling downwardly on chain
di.
This causes stem @t to move valve ‘d8 to
the left, thus placing passage 32 in communi
cation with chamber 1t. The pressure of the
cleaning fluid in passage 32 acting on the valve
18 will hold the valve in this position against the
cation \with the source of ñuid supply and the
'
As the blower element rotates, the cam-95 will
be moved to actuate lever 96 and to thus ex
haust the iluid under pressure from cylinder 93.
At this time the pressure oi’ the cleaning iiuid
acting on the face of piston 92 will move this
piston to open valve 9|! to thus admit cleaning
fluid under pressure to the blower element, lt be 10
ing understood that at this time the cleaning
fluid will be discharged from the blower element
adjacent the portions of the fluid heater to be
cleaned.
As soon as cleaning fluid under pressure is ad
mitted to the blower element, this cleaning fluid
enters chamber 80 by way of passage 8|. The
pressure of the cleaning fluid in chamber 80 act
ing on valve 18 moves this valve to the right, thus
closing communication between chamber 16- and 20
passage 32. When the valve is- in this position,
however, fluid under pressure may ñow from
chamber 80 to chamber 16 through valve seat
82, so that ñuid under pressure will continue to
be supplied to the valve chamber 5| from the 25
blower element by way of passage 8|, chamber
80, etc.
'I'hus the pistons will continue to reciprocate
and the blower element will continue to rotate
until the cam 95 passes out of engagement with 30
lever 96.` At this instant the valve 98 will close,
thus closing communication between cylinder 93
and the exhaust. 'I'he cleaning Huid then leak
ing around piston 92 will build up a pressure in
cylinder 93, with tbe result that the valve 9U
will be moved to its closed position.
The closing of valve 9|! will of course cut od
the admission of cleaning fluid to theblower ele
ment, withv the result that cleaning ñuid will no
longer be supplied to the valve chamber 5i. This 40
will result in a termination of the reciprocation
of the pistons d2 and d3 and in a termination
of the rotation of the blower element. It will
thus be apparent that once the operation of the
blower element is initiated by pulling on the
chain tl, the blower element will rotate through
one revolution, during which time cleaning Àfluid.
will be admitted to the blower element during
a portion oi its movement. When the movement
of the blower element is terminated, the valve
admitting cleaning fluid to the same will be
closed, and the parts will ‘be in position for the
next cleaning operation.
in Figs. 4 to 6, inclusive, a slightly modified
form ci control device is shown, this device be
ing adapted to be added to the structure above
described to vary the number of rotations of the
blower element incident to each operation there
ci”. Referring then particularly to these figures
of the drawings, it will be noted that there is fixed
to the valve casing die a housing MI5, this hous
ing having a depending portion i116 bored to re
ceive a plunger itl. The actuating chain |31a
is connected to the lower end of plunger |81 so
as to be adapted to move the same downwardly
force exerted by spring it.
against the tension oi`.spring |08. The plunger
Fluid under pressure from chamber ‘it will be
supplied to valve chamber 5i by way of conduit
55 so that the pistons 42 and ¿i3 will start to re
ciprocate. Reciprocation `of these pistons will
eiïect a rotation of ratchet wheel 39 which, by
way of pinion 31 and gear 35, will rotate the
blower element. As brought out before, upon re
ciprocation of the pistons and of the yoke, the
valve 5@ will be periodically actuated to alter
is provided with a tapered portion |09 interme
diate its ends, this tapered portion constituting
a cam for moving the stem 83a to the left when
the plunger is pulled downwardly.
Mounted in suitable guides iiii in housing |85
is a member iii.
This member is adapted for
sliding movement longitudinally of the guides
iiil and is normally urged to the left, as viewed
in Fig. 4, by a spring H2 which engages a block 75
4
2,110,534
||3 which depends from the member III. The
block ||3 is provided with stepped shoulders |I4
adapted for engagement with the upper end of
plunger |01.
UI
'I'he member |I| carries on its upper face a
block ||5 having ratchet teeth I|6 adapted to
be engaged by a, pawl H1 secured to- the end of
pipe I 28.
a stem I Il which is ilxed to the piston 92‘ for
ment for rotating the same, and this gear is
reciprocation with the same. Guides I I9 formed
on the side of housing |05 tend to hold the pawl
||1 out of engagement with ratchet teeth IIB
during a portion of the longitudinal travel of
stem ||3.y Formed in the opposite sides of the
housing are openings |20 into any aligned pair
15 of which a pin I2| may be inserted, this pin lim
iting forward movement of member I I| by en
gaging the forward end of block II5.
In the operation of this form of construction,
the number of rotative movements to be impart
20 ed to the blower element- may be determined by
inserting pin I2| in the proper pair of holes |20.
Thus, if it is desired that the blower element ro
tate four times, the pin would be inserted in the
fourth hole from the right, as indicated -in Fig.
25 5 of the drawings. With the pin inserted in
this hole, a downward pull on chain 81* would
cause plunger |01 to move stem 83‘ to the left,
thus opening valve 18* to admit fluid under pres
sure to the control valve (not shown) for the ac
30
the blower element 25b is shown as being jour
naled in a head designated generally by the ref
erence character 25h. 'This head comprises a
gooseneck |25 in one end of which the blower ele
ment is journaled and to the other end of which
cleaning iluid is supplied by a s_uitable supply
tuating pistons. Obviously, this downward pull
of the plunger would move the upppr endv there
of out of the path of travel of the member III,
thus permitting this member to move to the left
to the position shown in Fig. 5 o! the drawings.
The blower element would be rotated by ad
A gear 35b is ilxed to the blower ele
driven by a pinion |21 which is mounted on the
driven shaft |28 of a suitable iluid motor which 10
may be of any desired character and which is
designated by the reference character |29.
Cleaning ?uid is periodically admitted to the
blower element upon rotation thereof by mech
anism which includes a cam 95b fixed for rota
tion with the gear 35", this cam engaging a suit
able trigger I30, this trigger in turn engaging
the stem |3| of a valve |32. Periodically upon
rotation of the blower element the stem I3| is
depressed to open the valve |32 to thus admit
cleaning Iluid from the supply pipe to the blower
element. A leaf spring |33 connected to the
valve stem aids in closing the valve.
Mounted in the supply pipe |23 in advance of
the vvalve |32 is a valve |35. Tapped into the 25
head 26b but between valves |35 and |32 is a
conduit |36 which supplies cleaning fluid under
pressure to the fluid motor |29, the exhaust
from this motor being conducted to any suitable
point by a conduit |31. The arrangement as 30
thus far described is such that when the valve
|35 is opened, iluid under pressure will be im
mediately admitted to the iluid motor to rotate
the latter. Cleaning fluid, however, will only
be admitted to the blower element periodically as 35
mission of iluid under pressure to the actuating the valve |32 is opened during rotation of the
pistons, and once during each revolution of the _ blower element.
blower element the valve 90°' would be actuated _ Connected to the valve |35 is a stem |38, and
as previously described.
Each time the valve
40 90'I is opened, it would act through stem I I8, pawl
||1 and ratchet teeth IIB to move member |||
one step to the right, so that the upper end of
plunger |01 would engage the next higher step
I I4. Since the plunger |01 will be held down
45 wardly by the portion ||3 of the member III
until the member I || is moved entirely to the
right or to the position shown in Fig. 4 ofthe
drawings, it will be apparent that the valve 18‘
will be held open until the blower element ro
50 tates a suiilcient number of times to eiïect this
movement of the member III. Obviously, when
the member ||I has been moved sufñciently far
to the right so that the upper end thereof clears
the top plunger |01, thus permitting the plunger
55 to return to its original position, the valve 13°'
will then close communication between passage
32Il and chamber 16a. The blowerelement will
then continue to rotate until valve 90“ cuts of!
the admission of cleaning fluid to the blower ele
60 ment, at which time rotation of the blower ele
ment will be stopped.
From the above it will be apparent that the
attachment disclosed in Figs. 4 to 6, inclusive,
may or may not be added to the head disclosed in
65 Figs. 1 to 4, inclusive.
When this attachment
forms a part of the control mechanism, the blower
element may be caused to operate a desired num
this stem is secured to a piston |39 which is
mounted for reciprocation in a cylinder |40. 40
This cylinder is in communication with the sup
ply pipe |26 so that iiuid in the supply pipe may
leak around the piston to build up a pressure in
back oi.' the same, the arrangement being such
that when the pressure of the cleaning ñuid in 45
`back of piston |39 balances the pressure of the
cleaning ñuid acting on the front face of the pis
ton, the i’orce of spring |4| will move the valve
|35 to closed position. Obviously, whenever the
space in cylinder |40 between the piston |39 and 50
the closed end of the cylinder is opened to the
exhaust, the cleaning ñuid acting on the face of
piston |39 will move this piston to thus move the
valve to its open position.
For controlling communication between the 55
cylinder |40 and the atmosphere and to thus pro
vide means for exhausting the tluid pressure from
in back of piston |39, there is provided a conduit
|45.
Mounted in this conduit is a valve |46 nor
\mally held closed by a spring |41. When- the
valve |46 is opened against the force exerted by
the spring, fluid under pressure from cylinder |40
may be exhausted by way of the discharge end
|48 of the conduit |45.
For actuating the stem |50 of valve |43, there
is provided a cam I 5|, and this cam is fixed` to a
sleeve |52 which is rotatably journaled on a shaft
ber of times by properly locating pin |2I in hous-.
ing |05.
In Figs. 7, 8, and 9 a modiiled form of con
70
|53. Fixed to the sleeve |52 for rotation with
the same is a ratchet wheel |54, and suitably sup
ported from the head 2Gb is a lever.|55 which 70
struction is disclosed in which, as in the last
described form of construction, the number of
rotative movements and thus the number of op
erations of the blower element may be regulated
75 as desired. In this embodiment of the invention,
carries a pawl |56, this pawl engaging the ratchet
wheel |54 to rotate the latter. 'I’he pawl engages
the ratchet wheel tangentially and the teeth of
the -latter are preferably so arranged that each
rocking of the lever |55 moves the ratchet wheel 75
5
9,110,584
one tooth. Chains |51 and |55 secured to the
opposite ends oi’ the lever |55 provide means for
actuating this lever.
The sleeve |52 is frictionally constrained to ro
tate with the shaft |53 by a ball |50 mounted in a
suitable bore formed in a boss |60l in the sleeve
|52. A spring |6| adjustable by a threaded plug
|82 engages the ball |56 to urge the same into en
gagement with recesses |63 spaced circumferen
10 tiaily of the shaft |53.
Fixed for rotation with the blower element is a
pinion |65, and this pinion drivingly engages a
gear |66 fixed to the shaft |33. 'I‘he arrange
ment is such that when the blower element is
15 rotated, the gear |66 and thus the shaft |53 will
be rotated.
.
In the operation of this form of construction,
when the valves |32 and |35 are closed, the
' blower element will be at rest, no cleaning fluid
of pulls imparted to the chain |53 determines the
movement of the cam i5| with reference to the
valve stem and thus predetermines the amount of
reverse movement of the cam necessary to per
mit a closing oi’ valve |46 and a termination of
the operation of the blower element.
It is to be understood that the fluid motor |25
may be adapted to drive the blower element either
continuously in one direction or to oscillate the
blower element. If the blower element is ro
tated continuously in one direction, the valve |32
will be utilized to 4limit the supply of cleaning
fluid to the blower element to a portion only of its
rotative movement.l Il, on the other hand, the
blower element is osciilated by the motor |23, the
valve |32 may be eliminated since the blower
element will be oscillated only through the arc
in which blowing is desired.
~
In Figs. 10 and 11 a further modified form of
construction is disclosed as comprising a blower 20
element 25c which is suitably journaled in a head
20 at ‘this time being supplied to the same. It will
be understood that at this time the cutaway por
tion of the cam | 5| will be opposite the valve -designated generally by the reference character
26s. 'I‘he head in this instance may be similar
stem |50 so that the valve |46 will be closed.
If now, it is desired to eßect an operation of to the head shown „in Fig. 7 of the drawings, thus ’
25 the blower element, the lever |55 will -be rocked including a gooseneck |25” through which clean 25
by a proper pulling on chains |51 and |58, this
rocking of lever |55 effecting a rotation of the
ratchet wheel |54 in the direction of the arrow in
Fig. 7 of the drawings. The shaft _|53 will be held
30 stationary during this actuation of the ratchet
wheel by virtue of the inertia of and the resist
ance to rotation oi.' the ‘gear |66, blower element
25b and associated structure. Thus, upon rota
tion of ratchet wheel |54 by pawl |56. this ratchet
35 wheel and the cam will be rotatedwith reference
to the shaft |53, the cam engaging stem |50 to
open valve |46.
Opening of valve |46 permits fluid to exhaust
from the closed end of cylinder |40 whereupon
40 the pressure of the cleaning fluid acting on the
face of piston |39 moves this piston to cause
the same to open valve |35. Upon opening of
valve |35 cleaning fluid passes immediately to
the fluid motor |29 by way of conduit |36, thus
45 causing this ñuid motor to rotate pinion |21 and
the blower element 25h. As the blower element
rotates, the valve |32 will be periodically opened
to admit cleaning fluid to the blower element dur
ing a predetermined portion of the rotation
thereof.
It will be apparent that as the blower ele
ment rotates, the gear |66 will be rotated, thus
- rotating shaft |153.` The sleevel .|52 being fric
tionally constrained to rotate with shaft |53 by
spring-pressed bail |59, will thus be rotated to
move the cam |5| to its original position where
its cutaway portion again registers with the valve
stem |50, thus permitting valve i46 to close. 0b
ing lfluid is supplied to the blower element. A
supply pipe |26c supplies cleaning fluid to the
gooseneck. there being provided a valve |32°
which controls the flow of cleaning fluid from
the supply pipe to the gooseneck. 'I'he stem 30
i3|c of this valve is adapted to be actuated by
a lever |30° which in turn is actuated by cam
95° upon rotation of the blower element, with
the result- that each time the blower element is
rotated the valve is opened for a portion of the 35
rotative movement.
For rotating the blower element or,` if de
sired, oscillating the same, there is provided a
fluid motor |29° which in this instance drives a
worm |15 which engages a worm wheel |16 ñxed 40
to the blower element. Fluid under pressure is
supplied to the fluid motor by way of conduit
|36° which, it will he noted, may be conveniently
tapped into- the supply pipe |26¢. An exhaust
conduit |31c is provided for the fluid motor, this
exhaust conduit being arranged to discharge at
any desired point remote from the fluid motor.
For controlling the ñow of fluid under pres
sure through conduit |3|i° and thus to control
the actuation of motor |29° and the operation 50
of the blower element, there is provided a valve
i11. This valve is provided with a stem |18 and
is normally held in closed position by a spring
|19 which surrounds the valve stem and engages
a collar on the same.
‘
55
Suitably joumaled in a support |60 carried by
the blower head is a shaft |8|, and secured to
this shaft for rotation with the same is a ratchet
wheel |82 and a cam |83. The cam is so po
60 `build up in back of piston |39, thus eifecting a ~ sitioned as to engage the upper end of valve
closing of main valve H35 and a termination of stem 618 for a purpose which-- will hereinafter be
the operation of the fluid motor i 28 and of the more fully described.
Loosely journaled on shaft iti is a sheave
blower element.
The several gears and associated parts are wheel or the like |65, and pivotally carried by
this sheave Wheel is a pawl E66 adapted to en 65
65 preferably so designed that a single pull on chain
vlously, as soon as valve E46 closes. pressure will
|58 ratchets the ratchet Wheel |54 around one
tooth, and moves the cam i 5| sufilciently that
the cutaway portion of this cam will be brought
into registration with the valve stem |50 after
the blower element has made one revolution.
If
it is desired that the blower element make two
or more revolutions, two or more pulls are im
part-ed to the chain 856, thus causing the cutaway
portion of the car'n i5| to be moved farther away
from the valve stem |50. Obviously, the number
gage in an enlarged notch |81 formed in the
ratchet wheel |52. A spring |58 engages the
pawl |86 to urge the same toward the periphery
of the ratchet wheel i 82.
The lever i30° is extended beyond its point 70
of pivotal mounting on the head 26° to pro
vide an extension |60, and pivoted to this ex
tension is a pawl |5| adapted to engage the
ratchet teeth G92 on the ratchet I‘wheel |82. A
spring |93 secured to the pawl 98| holds the 75
6
2,110,534
same in a position to engage the ratchet teeth,
as will be readily apparent.
_
'
Extending around the sheave wheel l|88 is a
chain or other ilexible element having the de
pending ends |95 and |98. It will be understood
th'at «these ends extend to a point adjacent the
boiler door where they may be conveniently
grasped by an operator. The depending end
|96 of the flexible element passes through a guide
lated in the vmanner above described. 'I‘he op
eration oi the blower element is dependent upon
a prior opening of valve |11, the opening of this
valv'e initiating the movement of the blower
element and the movement of the blower ele
ment controlling the flow of cleaning fluid to
the same.
In Figs. 12 to 15, inclusive, there is disclosed
electrically controlled means tor accomplishing
|91 carried by the support |88. and this por- ' the results accomplished by the sheave |85.
tion of the chain or flexible element has fixed ratchet wheel |82, cam |33 and associated struc
thereon a collar |99 adapted to engage the
ture disclosed in Figs. 10 and 1l. In the modi
guide |91 to limit movement oi' the flexible inem
ñed. construction, the reference character |38d
ber in one direction.
designates a conduit similar to the conduit |38c
With the structure above described it will be in that it extends to a huid motor (not shown)
understood that when the blower element is not which is arranged to drive a suitable blower ele
in use thevvalves |32° and |11 will be closed. ment (also not shown). The valve |11d controls
It now, it is desired to effect an actuation oi’ the
the ñow of fluid under pressure through this
blower element, the end |98 of the tlexible ele
conduit, this valve being normally closed by a
spring |19d. which spring is sleevedon the stem
20 ment is pulled downwardly, the sheave wheel |85
at this time rotating relative to the ratchet wheel
|18d of the valve.
l
|82 and cam |83. 'I'he sheave wheel |85 is ro
The stem of the valve is arranged to be en
tated until the pawl |88 thereon engages in the gaged by a cam |83d, which cam is mounted on
enlarged notch |81 in the ratchet wheel |82.
a shaft |8|d, there being also ilxed to this shaft
The end |98 oi’ the flexible element is then for rotation with the same a ratchet wheel |82d.
25
pulled, with the result that the sheave wheel This ratchet wheel has teeth |92d adapted to be
will be rotated in the opposite direction, and engaged by a pawl |9|d pivotally carried by the
the ratchet wheel will be caused to rotate with extension |98d of the valve actuating lever (not
the sheave wheel by virtue of the4 connection shown) of the blower head (not shown). It will
30 together of these two elements by the pawl |88.
be apparent that, as in the previously described
AThis reverse rotation of the sheave wheel will
form of construction, when the blower element is
be continued until the collar |98 engages lug rotated, the pawl |9|d will be periodically actu
|91, it being understood that during this move
ated to ratchet the wheel |82d about its axis
ment of the ratchet wheel, the cam |83 will be and to thus move the cam |83d with reference
35 rotated so as to engage the valve stem |18 and
to the valve stem |186.
open valve |11.
'
For the purpose of initially actuating cam |83d
_ Opening of valve |11 admits fluid under pres
to thus open valve |11d, an electrically controlled
sure to iluid motor |29°, with the result that the mechanism is provided. 'I'his mechanism includes
blower element is rotatively driven. As the
an electric motor 288 on the shaft of which >is
40 blower element is rotated, the lever |38° is ac
tuated to periodically open and close valve |32¢. mounted a worm 28|, this worm drlvingly engag
'I‘his rocking of lever |38° eñects a movement ing a worm Wheel 282 which is rotatably jour
of the ratchet wheel |82 and cam |83 by virtue
of the 'engagement of pawl |8| with the teeth
45 on the ratchet wheel. Thus during rotation of
the blower element, the cam |83 will be rotated
with a step by step movement until it passes outof engagement with the valve stem |18, thus per
mitting valve |11 to close.
The cam |83 is preferably rotatively adjust
50
able with reference to the ratchet wheel |82,
there being a set screw |99 associated with the
hub of the cam to nx the cam in adjusted po
sition. The arrangement is such that the cam
may be set so that it will be moved> out of en
gagement with the valve stem |18 after the
blower element has completed one revolution.
If it is desired that the blowerelement move
through more than one revolution, the cam |83
may be so adjusted relative to the ratchet wheel
that when the ratchet wheel has been moved
to such an extent that the collar |93 engages
lug |91, the cam will be in such a position that
it will require two or more complete rotations oi'
the bl'ower element to move the cam out of en
gagement with the valve stem |18. ‘Thus the cam
may be readilyadjusted so that after the op
eration oi the blower element has been initiated,
naled on the shaft |8|d. The control means for
the electric motor 288 is so arranged that each
time the circuit is closed through the electric mo
tor the worm wheel will be caused to rotate
through one revolution, stopping in each instance
in the position shown in Fig. 12 of the drawings.
The control means for the motor comprises the
leads 285 and 288 which are suitably connected
to any suitable source of current (not> shown).
Lead 288 is connected to a brush 281, this brush
being also directly connected by lead 288 to one
terminal 289 of the motor 288. The other termi
nal of the motor is connected by a lead 2li to
one terminal 2| 2 of a switch designated generally
by the reference character 2|3. The other ter
minal 2|4 of this switch is directly connected by
a lead 2|! with the lead 288.
`
A switch arm 2|8 is provided for closing the
circuit between terminals 2|2 and 2M, the ar
rangement being such that when this circuit is
closed, electrical energy is supplied to the motor
288 to cause rotation of this motor. The switch
arm 2|6 is solenoid actuated, the arrangement
being such that when this switch arm is initially,
manually or otherwise actuated, it will be held
in closed position until the electric motor has ro
the blower element will continue to be operated « tated sufilciently to rotate' the worm wheel
through 360°
70 through a desired plural number oi’ rotations.
It will be apparent that cleaning ñuid may,
To accomplish this, there is provided a solenoid
if desired, be at all times supplied to supply pipe 2|1 connected to the switch arm 2|8 to actuate
|28", the arrangement being such that the blower the same. One terminal of this solenoid is di
element will not be operated until the flexible rectly connected to the lead 288 by a lead 2|8,
while the other terminal of this solenoid is con
75 actuating chain or element has been manipu
15
20
25
30
2,110,534
nected by lead 2| 9 to brushes 220 and 22|. These
' brushes are disposed on opposite sides of the
brush 201, the three brushes being spaced apart
and being arranged to engage a contact strip 222
mounted on the worm wheel 202 for rotation
with the. latter. It will be understood that when
ever the solenoid 2|1 is energized, the switch 2|6
is closed, while whenever the solenoid is de
energized, the switch arm 2 |6 is moved to the po
10 sition shown in full lines in Fig. 12 of the draw
ings, by any suitable means (not shown).
In the operation of this control means, as thus
far described, it will be understood that with the
parts in the position shown in Fig. 12 of the draw
15 ings, no current will be supplied from the leads
'y
With the structure disclosed, it will be appar
ent that the amount of ' rotation imparted to the
ratchet wheel |62‘i and thus to the cam |83‘il
incident to rotation of the worm wheel .202
through 360° will be dependent upon the rotative
positioning of the cam 230 with reference to the
ratchet wheel. With the parts in their normal
positions, it will be understood that the ratchet
wheel I|l2dl will be in such a position that the
slot 225 thereof will be substantially in the posi
tion shown by dotted lines in Fig. 12 of the draw
ings. At this time the cam |83d will be out of
engagement with the valve stem |10“, >and the
v'alve |11cl will be closed.
II, now, the switch arm 2|6 is moved into en
205 and 206 to the motor 200. `When, however,
the switch arm 2| 6 is moved into engagement
with contact 2 | 4, current is supplied to the motor
by way of leads 206 and 208 on the one hand and
20 lead 2| |, switch 2|3 and leads 2|5 and 205 on the
other hand. This will immediately start a rota
gagement with contact 2M, worm wheel 202 will
be rotated through 360°. The initial rotation of
the worm wheel will not, however, effect a rota
tion of the ratchet wheel, it being necessary first
tion of the motor and thus a rotation of the worm
wheel 202. As soon as the contact strip 222 moves
tion with the cutaway portion of the cam to the
end that the pin will be projected through the
slot 225. The pin 226 will travel in the slot 225
until it reaches the end of the slot,~at- which time
the ratchet wheel will be rotated with the worm
wheel until the pin again comes opposite the cut
away portion of the cam. At this instant the
pin will be withdrawn from the slot 225 by means
sufficiently to span the space between brushes
25 220 and 201, a circuit will be completed through
the solenoid 2|'| by way oi.’ lead 206, brush 201,
contact strip 222, brush 220 and lead 2|9. This
will eiïect an energization of the solenoid and will
hold the switch arm 2 I6 in engagement with con
30 tact 2|4, thus holding closed the circuit through
the motor 200.
The solenoid will remain energized for a short
period even after the rear end portion of contact
strip 222 has passed out of engagement with
that the worm wheel rotate relative to the cam 20
sumciently to bring the pin 226 out of registra
of spring 220 so that the worm wheel may con
30
tinue to rotate with reference to the ratchet
wheel. Obviously, as the blower element (not
shown) is driven, the pawl ISId will be actuated
periodically to ratchet the ratchet wheel |82d in
the direction in which it had previously been
will be closed through the solenoid by way of lead - traveling. This movement of the ratchet wheel
206, brush 201, contact strip 222, brush 22| and. will eventually cause the cam l83d to move out
lead 2|9. As soon, however, as the end of strip of engagement with stem l‘lßd, thus allowing a
222 passes out of engagement with brush 207, the closing of valve llld. Since the rotation of the
40 circuit through the solenoid lwill be broken, thus blower element and thus the actuation of pawl 40
Mid is dependent upon the-`~fluid under pressure
permitting switch arm 2|6 to move out of en
gagement with contact 2M, and thus breaking supplied to the blower head by way of conduit
i664, it will be understood that as soon as the
the circuit through the motor 202.
35 brush 220, for during this interval, the circuit
The rotation of the worm wheel through an arc
45 of 360° is utilized for the purpose of adjusting the
position of cam ltâd with reference to the valve
stem l‘lßd, it being understood that vthis cam
opens valve llld and holds the same open until
the cam is moved out of engagement with the
56 end of the valve stem. This is accomplished by
forming in the ratchet wheel m2 a circumferen»
tially extending slot 225 and by loosely mounting
a pin 226 in an opening 222 formed through the
worm wheel 202. The pin 226 is so positioned
55 from the center of the Worm wheel as to register
with the slot 226.
A spring 228 surrounds the pin 226 and engages
a head 229 formed on this pin to normally urge
the vpin rearwardly so that the head thereof en
60 gages a cam member 230 which is supported adja
cent the shaft |8|d for rotative adjustment with
respect to the same. This cam is provided with
the cutaway portionr 213i, this cutaway portion be
ing of suñìcient depth so that when rotationoi:~
65 4the worm wheel brings the pin opposite this cut
away portion of the cam, the end of the pin will
be withdrawn from engagement in the slot 225.
The cam is also provided with an inclined portion
232 which connects the cutaway portion to the
70 raised portion 233 of the cam, the arrangement
being such that as the worm wheel is rotated,
cam idäd has been moved to a position where valve
i'lld may close, the operation of the entire mech
anism will be terminated.
45
It will be apparent that the extent of movement
imparted to the ratchet wheel by the worm wheel
will be dependent upon the rotative positioning
of the cam 236 with reference to the ratchet 50
wheel. Further, the amount of opening of the
valve incident to any predetermined rotation of
the ratchet wheel will be dependent upon the
adjustable positioning of the cam mdd with refer-ß
ence to the ratchet wheel. For this reason the 55
cam i636 and ratchet wheel lßZd are preferably
secured to the shaft ltld for adjustable rotative
positioning with reference to the same. Likewise
the cam' 230, while not secured to the shaft mld, v
is suitably mounted on a support 235 so as to 60
be adapted for adjustable rotative positioning
with reference to the shaft Mild.
It constitutes a feature of this 'form of con-7 `
struction to provide signals to indicate the inter
val during which the motor 206 is being operated
and to indicate when the operation of the blower
head to which the fluid under pressure is being
supplied has been completed. To indicate the in
terval during which the motor is being driven,
there is provided a lamp 236 which is connected
to the leads 2| l and 206. It will be apparent that
carrying with it the pin, the head of the pinA when the leads 2li and 206 are energized andV
rides up on the inclined portion 232 of the cam thus when electric current is being supplied'v to
and is thus projected from the worm wheel and the motor 200, electric current will be supplied to lamp 236 to light the latter. Thus this lamp willÍ
75 through the slot 225 in the ratchet wheel.
8
2,110,534
ì be lighted during the interval that the motor 208
is driven.
*
For the purpose of indicating the closing of
valve |1`|d and thus the completion of the opera
tion of the blower head to which fluid under prea
sure is being supplied, there is provided a signal
lamp 231 mounted in a lead 238 which terminates
in a brush 239. This brush extends to adjacent
the ratchet wheel |82d and is disposed in spaced
10 relation to a second brush 248 which is electrically
connected to the lead 285 by a lead 24|. The
brushes 239 and 240 are spaced from the face of
'ratchet wheel |82d, and formed on the face of
the ratchet wheel is a relatively short contact
strip 242 adapted to electrically connect the
brushes 239 and 240 when the ratchet wheel has
been rotated to a position where the cam |83d
is moved out of engagement with the valve stem
|185.
It will be apparent that normally, when the
system is not operated and the valve |11d is-
IC Ul
l.
loosely mounted on a shaft 245. Each sheave
wheel is preferably of a size substantially larger
than the sheave wheel of the head which it con
trols, with the result that a slight rotation of
the sheave wheels 244 will effect substantial ro ci
tative movements of the sheave wheels associated
with the heads. Each sheave wheel 244 is also
preferably provided with a handle 246 by which
it may be rotated.
'
Disposed adjacent the sheave wheels 244 is 10
a main cleaning fluid supply conduit 241 to which
it will be understood the several supply conduits
for the blower elements are all connected. A
valve 248 in the conduit 241 is preferably so lo
cated that it may be conveniently actuated by 15
gig: operator who is rotating the sheave wheels
With this arrangement it will be apparent that
an operator may cause the blower elements to
operate in any desired sequence and either one 20
at a time or more than one at a time by first
closed, the lamp 231 will be illuminated. When,
opening valve 248 and then by properly rotating
however, the ratchet wheel |82d is rotated to a
position where cam |83d opens valve |119, the
contact strip 242 will be moved out of engagement
with brushes 239 and 248, thus breaking the
circuit through lamp 231. This circuit will re
main broken during the ratcheting of the wheel
the sheave wheels 244. It will be understood that
these sheave wheels are rotatable entirely inde
pendently of each other with the result that the 25
blower elements may be operated in any order
|82d or until this wheel is moved to a position
where closing of valve |11d is permitted. Thus
the lighting of lamp 231 will-indicate that the
blower element which the mechanism controls has
operated the desired amount and the supply of
iluid under pressure to the motor thereof has
been cut off. It will be understood that while the
signals have-been described as comprising signal
lamps, any other suitable signals may be substi
tuted, either audible or visible.
With the blower elements controlled by mech
40 anisms such as disclosed in Figs. 10 to 15, inclu
sive, it will be apparent that all of the blowers
associated with any one boiler or with any group
of boilers or fluid heaters might, if' desired, be
controlled from some central point either located
l adjacent the particular fluid heater being cleaned
or located at some remote point such as the of
fice or the like of the power plant. In Figs. 16
and 17 there is disclosed means whereby a plu
rality of control mechanisms of’ the character dis
50 close'd in Figs. 10 and 11 might, if desired, be
located at some point adjacent the fluid heater
with which the blower elements are associated.
Referring then particularly to these figures, the
numeral 243 designates a fluid heater of any
Ul $1 desired character such. for example, .as a boiler.
Associated with this fluid heater are the blower
heads 26°, it being understood that each blower
head journals a suitable blower element (not
shown), the blower elements extending into the
fluid heater to discharge cleaning fluid adjacent
the parts thereof to be cleaned. - 'I'he heads 26e
may be of the character shown in Fig. l0, with
the result that pendant from each blower head
are the ends |85e and |96e of suitable flexible
65 actuating elements. As brought out in the de
scription of Eig. l0, suitable actuation of the de
pending vends of the flexible elements will cause
operation of the blower heads with which the
flexible elements are associated, the blower ele
70 ments in each instance being operated for a pre
determined period of time, dependent upon the
setting ofthe particular heads.
The several flexible elements may be brought
to adjacent -the front of the fluid heater and the
75 ends thereof engaged with sheave wheels 244
or-sequence desired. Suitable indicating mecha
nisms may be associated with the blower ele
ments to advise the operator of the fact that the
blower elements are operating.
30
As disclosed in Fig. 18 of the drawings, a num
ber of switches similar to the switch 2|3 shown
in Fig. 12 of the drawings may be assembled at a.
central point to provide for the operation of a
number of blower elements from this point. A
number of these switches, each being designated
by the reference character 2 I3t are shown as be
ing mounted on a suitable panel 250, it being
understood that this panel may be located at any
desired point, either adjacent to or remote from 40
the fluid heater or heaters to be cleaned.
As illustrated", each switch may comprise the
spaced terminals 2 |2t and 2 |4f and a switch arm
2 I6l movable to electrically connect these spaced
terminals. A push button 25| may be assœiated 45
with each switch arm for actuating the same,
there being also associated with each switch
arm a solenoid 2|1f operating to hold its respec
tive switch arm in contacting position until the
motor which it controls has operated for the de 50
sired period of time. The signal lamps 236t and
231t will indicate the operation of the several
electric motors controlled by these switches and
the several blower elements of the system.
As in the just previously described form of con
struction, the location of a plurality of controls
at a central point permits a single operator to
control the operation of a number of blower ele
ments. Still further, the blower elements may be
operated in any predetermined desired sequence
and -if desired, two or more blower elements may
be caused to operate during the same interval
of time.
In Figs. 19 and 20 a further modified form of
control mechanism is disclosed, this mechanism
being adapted to provide for the operation of a
blower element for a predetermined period of
time. In these ñgures the numeral |365 desig
nates the conduit which supplies ñuid underl
pressure to the fluid motor (not shown) of a 70
suitable blower head (also not shown). It will
be understood that the fluid motor associated
with the head may be adapted to either rotate or
oscillate its respective blower element as desired.
Disposed in the conduit |36l for controlling
9
2,110,534
same is a valve |118, the stem|188 oi which is
connected to a piston 268. This piston is mount
ed for reciprocation in a -cylinder 26|, this cylin
der being in communication at its lower end with
288 and leads 281 and 288 on the one hand and
lead 213 on the other hand. During this period
of rotation of the motor, electrical energy will be
also supplied to the solenoid 218 by way of leads
213 and 212 onthe one hand and by way of leads
the interior of the conduit |368 on'the pressure
side of the valve in this conduit. A spring 262
mounted between the piston 268 and the closed
end of cylinder 26| provides means for closing
and lead 21| on the other hand. Thus the sole
noid will be energized during the period that the
brushes 211 and 283 are engaged by the contact
the passage of fluid under pressure through the
10 the valve |118 when ñuid pressure has leaked
past the piston so that pressures on opposite sides
of the pistons are substantially equal.
It willl be apparent that valve |118 may be
opened by venting the space between the piston
268 and the closed end of the cylinder, the pres
sure of the iluid-in conduit |368 then acting on
the lower face of piston 268 to move the same
upwardly against the force exerted by the spring
262. To vent this space, a conduit 263 is tapped
into
the cylinder 26|, and this conduit may
20
communicate either with the atmosphere or with
any suitable exhaust. Disposed in conduit 263
is a valve 264, this Valve being normally urged
to its open position by a spring 265 which sur
25 rounds the stem 266 of the valve and engages a
head 261 formed on this stem. A weight 268
normally engages the valve stem 266 to counter
act the action of the spring 265 and to thus hold
the valve 264 to its seat.
30
For actuating the weight 268 there is provided
a solenoid 218, and this solenoid is supplied with
energy by leads 21| and 212. 'I'he lead 212 is
directly connected to a lead 213 which is con
nected at its one end to one terminal 214 of a
35 double-pole switch 215 and which is connected
at its other end to a synchronous constant speed
motor 216. The other lead 21| is connected to a
brush 211 for a purpose which will hereinafter be
more fully described.
,
The double-pole switch 215 is provided for elec
40
trically connecting the terminals 218 and 214 to
a power line 219. Connected to the terminal 218
is a lead 288 which is connected to a terminal
28| from which a lead 282 extends, this lead
45 being connected to a brush 283 disposed adjacent
the brush 211. A switch arm 284 is provided for
electrically connecting >terminal 28| to a terminal
285, this terminal being connected by a lead 286
to the motor 216 and by a second lead 261 to a
50 brush 288 disposed adjacent the brushes 211 and
283. The three brushes are arranged to wipe a
_contact strip 298 carried by a drum 29| which is
rotatively driven by the motor 216. It will be
noted that the contact strip extends only partly
55 around the drum 29| so as to provide that at
one portion during the rotation of the drum the
brushes will be free from contact with the strip.
In operation, the switch is closed and the
contact arm 284 then actuated to connect termi
60 nals 28| and 285. At this instant electrical cur
rent will be supplied to the motor 216 by way of
leads 288 and 286 on the one hand and by way
of lead 213 on the other hand. This will cause
a rotation of drum 29| and will bring the con
65 tact strip 298 of the drum into engagement with
the brushes 211, 283, and 288. As soon as these
brushes engage the contact strip, the switch
arm 284 may be released, there being provided
suitable means (not shown) for moving this
70 switch arm out of engagement with terminal 285
at this time. The motor however, will continue
to rotate until the brushes pass out of engage
ment with the contact strip 290, current at this
time being supplied to the motor by way of leads
75 288 and 282, brush 283, contact strip 288, brush
288, 282, brush 283, contact strip 288, brush 211
strip 298. '
vEnergization of the solenoid 218 raises the
weight 268 out of engagement with the valve stem
266 whereupon the spring 265 opens valve 264,
thus effecting a venting of the cylinder 26| above
the piston therein. As soon_ as the cylinder is
vented, the pressure acting on piston 268 opens
valve |118 and permits fluid under pressure to
flow through conduit |368 to the fluid motor
which operates the blower element which is being
controlled.
Obviously, as soon as the contact 20
strip 298 passes out of engagement with brushes
211 and 283, the solenoid 218 will be de-energized,
thus allowing the weight 268 to again fall upon
the valve stem 266, thus closing valve 264.
It will be apparent that by providing suitable
reduction gearing between the motor 216 and the
drum 29|, the interval of time in which the sole
noid will be energized may be regulated as de
sired. Thus by providing a desired speed of ro
tation of the drum 28|, the period of time during 30
which the blower element operates may be estab
lished. A lamp 282 may, if desired, be connected
to the leads 21| and 212 to thus indicate the
energization of the solenoid and thus the opera
tion of the control system. -
In Fig. 21 a slightly modified form of construc
tion is disclosed which includes~ conduit |36h
which, it will be understood, supplies iluid under
pressure to the driving motor of a. blower ele
ment. The valve |11h in this conduit controls 40
the ñow of ñuld through the same and thus to
the ñuid motor.
Valve |11h is provided with stem |18h, to the
upper end of which is secured a head 388. The
spring 38| engaging this head tends to normally
urge the valve to its open position. Opposing the
action of spring 38| is a Weight 382, and engage
ment of this weight with the head 388 is con
trolled by solenoid 218h which is supplied with
current by leads 21|h and 21211. It will be under 50
stood that the flow of current through these
leads may be controlled in the manner disclosed
in Figs. 19 and 20.
With this construction, when the solenoid' is
de-energized, the weight bearing on the head
388 will force valve |11h to its seat. Whenever,
however, the solenoid is energized, the weight will
be lifted from engagement with the head 388,
thus permitting spring 38| to open the valve.
In Figs. 22`and 23 a further modified form of 60
construction is disclosed which includes conduit
|36k and valve |11k disposed in this conduit for
controlling the ñow of pressure fluid through the
same. In this instancer the stem |18k of this
valve is secured to a piston 385 mounted for
reciprocation in a cylinder 386. Formed within
the cylinder is a partition 381 which provides a
chamber 388 above the chamber 389 in which
the piston reciprocates.
Tapped into the cylinder 306 below the pis
ton therein is a conduit 3|8, and tapped into
the conduit |36k in advance of the valve there
in is a conduit 3H. The conduits 3|8 and 3||
lead to a three-way valve 3| 2, there being also a
discharge conduit 3|3 for this valve. The valve 75
10
2,110,534
3i2 is provided with an actuating handle 3M
which is disposed in the path of movement of
the collar 3II flxed to the valve stern- luk.
Formed in the partition 331 is a check valve
3|3 arranged to permit passage of fluid from
chamber 333 to chamber 303, but preventing the
return flow ofiluid between these two chambers.
A by-pass conduit 3| 1 is provided, however, plac
ing these two chambers in communication with
10 each other, there being a needle valve 3|! in
this by-pass conduit for restricting the flow of
fluid through the same.
In operation, when the actuating handle 3H
is moved downwardly to the position indicated
in dotted lines, pressure ñuid is admitted from
conduit |38ll to the cylinder 30B below the pis-,
ton in this cylinder. 'I'his forces the piston 305
upwardly against the force exerted on the same
by the spring 320, thus opening valve |11k. Up
ward movement of the valve stem causes the col
lar 3| 5 thereon to move the valve handle 3M to
the position shown in solid lines, in which posi
tion the conduit 3|0 is placed in communication
with the exhaust conduit 3|3.
25
As soon as the pressure fluid is exhausted be
low piston 305, spring 323 acts to return the
piston to its original position and thus acts to
ly, fluid under pressure will be admitted to cyl
inder 303’n below the piston therein, thus forc
ing this piston upwardly and opening valve |11”.
This upward movement of the piston and valve
will actuate valve 3|2m to connect conduit III“
to the exhaust. During the upward movement
of the valve |11nu the pawl 323 will idle over
the teeth ot ratchet wheel 322, but as soon as
the space below piston 305m is connected to the
exhaust, the weighted arm or lever 320 acting 10
on the stem of valve i'l‘lm will tend to return
this valve to its closed position. The movement
of lever 320 incident to closing of the valve will
be retarded by the escapement mechanism, with
the result that by properly adjusting the escape 15
ment mechanism, the valve |11m may be held
open for a desired period of time.
From the above it will be apparent that the
invention provides control means for blower ele
ments whereby the blower elements may be caused
to operate for desired periods of time or through
desire'd numbers of revolutions. In each instance
the operation of the blower element may be in
itiated by a means which may be remote from
the blower element and the operation of 'the 25
blower will be automatically terminated without
close valve |11! This movement of the piston further action on the part of the operator.
While several embodiments of the invention
is retarded by the restricted passage of fluid from . have
been disclosed, it is to be understood that
30 chamber 308 to the chamber 309 above the pis
the
right
is reserved to make such changes in 30
ton. Thus by properly adjusting needle valve
3|8, the closing of valve |11* may be retarded the details of construction and arrangement of
parts as will fall wi'hin the purview of the at
to a desired extent.
. It will be understood that as long as valve |11*
35 is open, fluid under pressure will be supplied to
tached claims.
What we claim as our invention is:
1. In a. fluid heater cleaner, a movable blower 35
element, a source of supply of cleaning fluid
under pressure, a fluid motor for moving said
operation of the controlled blower element for ' blower element, means operating to admit clean
ing fluid to the blower element during a portion
40 a predetermined period of time.
of its movement, means for admitting cleaning
In Figs. 24 to 26, inclusive, a further modi
fluid under pressure directly from said source to 40
fied form of construction is disclosed which, how
ever, is quite similar to that disclosed in Figs. said fluid motor to actuate the latter, and means
operating after cleaning fluid is admitted to the
22 and 23. In this modified form of construc
blower element to conduct cleaning fluid from the
45 tion there is provided conduit |36m in which is
mounted valve |11m. This valve is provided with blower element to the fluid motor to actuate the 45
stem |18m which is secured to piston 305m. A latter and to cut olli the direct supply of clean
ing fluid from said source to said fluid motor.
collar 3|5m on the valve stem is arranged to ac
2. In a fluid heater cleaner, a rotatable blower '
tuate lever 3Mm which controls valve 3|2m, this
element, a source of supply of cleaning fluid under
50 valve controlling communication between con
duit 3|0m and supply and exhaust conduits 3i Ilu pressure, a valve for controlling the admission 50
of cleaning fluid from said source to said blower
and 3| 3m respectively.
element,
means operating to open said valve dur
In this modified form of construction, the valve ing a portion
only of the rotation of the blower
stem |18m is extended through the -piston, and
element, a fluid motor for rotating the blower
55 engaging the upper end thereof is a lever 320.
This lever may itself be relatively heavy or may element, a second valve connected on the supply
be weighted so that its engagement with the side of said flrst valve and to said fluid motor
_for controlling the flow of cleaning fluid from
valve stem-tends to move the valve |11un to its
said source of supply to said fluid motor, means
closed position.
60
The lever |23 is pivotally mounted at its one for opening said second valve and holding it
end on a shaft 32|, and disposed on this shaft open until said flrst valve has been actuated, and
means communicating with said blower on the
is a ratchet wheel 322, the teeth of which are blower element side of said first valve for con
engaged by a pawl 323 pivotally mounted on ducting cleaning fluid under pressure from said
lever 320. An escapement mechanism is pro
blower element to said fluid motor for continu
vided for retarding rotative movement of the ing
the actuation of the latter after closing of
ratchet wheel 322 in one direction, this escape
said second valve, said second valve being so con 65
ment mechanism including ratchet wheel 324 and structed and arranged as to be closed by the
pendulum 325 having dogs 326 formed on the '
pressure of the cleaning fluid when the cleaning
end thereof for engagement with the teeth on
fluid is conducted from the blower element to the
70 ratchet wheel 324. A weight 321 is mounted fluid motor.
on the pendulum for adjustment longitudinally
3. In a fluid heater cleaner, a rotatable blower 70
thereof to thus provide for varying the swing
element,
means operating in timed relation to
of the pendulum.
_
the
rotation
of the- blower element to admit
It will be understood that in operation, if the
cleaning fluid to the same, a fluid motor for ro
75 valve actuating lever 3M’Irl is moved downward
tating the blower element, means for supplying
75
the blower element actuating motor so that the
blower element will be operated. The retarded
closing of the valve |11* thus provides for the
l1
2,110,534
ñuid underpressure to said ñuid motor to start
the actuatioìiîthereof prior to the admission of
cleaning fluid to the blower element, and means
operating upon the admission of cleaning fluid
to the blower element to conduct cleaning fluid
from the blower element to the fluid motor to
actuate the latter and to cut off the initial supply
of fluid under pressure to the fluid motor.
4. In a fluid heater cleaner, a rotatable blower
element, a fluid motor for rotating said blower
element, a valve for controlling the admission of
cleaning fluid to the blower element, means oper
ating to periodically open and close said valve
upon rotation of the blower element, means for
admitting fluid under pressure to said fluid motor
to'actuate the latter, and means separate from
but controlled by the actuation of said valve for
cutting off the supply of’ fluid under pressure to
said fluid motor after a predetermined plural
number of rotative movements of the blower ele
ment.
20
5. In a fluid heater cleaner, a rotatable blower
element, a fluid motor for rotating said blower
element, a source of supply of cleaning fluidv under
pressure, a valve controlling the admission of
cleaning. fluid from said source of supply to said
blower element, means for periodically opening
and closing said valve upon rotation of the blower
element, a second valve for admitting cleaning
fluid under pressure from said source to said fluid
motor to actuate the latter, means for conduct
ing cleaning fluid under pressure from said blower
element to said fluid motor to actuate the latter
during the periods that cleaning fluid is being
, supplied to the blower element, and means for
after a predetermined rotation of said blower
element through an arc greater than 360 degrees.
9. In a fluid heater cleaner, a rotatable blower
element, power driven means for rotatingsaid
blower element, a cam controlling the supply of
power to said power driven means, means for
moving said cam to a position where power is
supplied to said power driven means, and means
operating upon rotation of said blower element
through more than 360 degrees to provide for
movement of said cam ‘to a position where the
supply of power to said power driven means is
c'ut off.
_
10. In a fluid heater cleaner, a movable blower
element, a motor for moving said blower element, 15
means operating in timed relation to the opera
tion of the motor for admitting cleaning fluid to
the blower element, a single means operating
when given a single power impulse to start the
operation of the motor to thus initiate the opera 20
tion of the blower element, and means for ter
minating the operation of the motor after the
blower element has been moved away from and
returned to its initial position a predetermined
25
plural number of times.
11. In a fluid heater cleaner, a movable blower
'y element, a motor for moving said blower element,
means operating in timed relation to the opera
tion of the motor for admitting cleaning fluid to
the blower element, a single actuating member 30
operating when given a single power impulse to
start the operation of said motor to thus initiate
the movement of the blower element, and means
operating after the blower element has been
moved away from and returned to its initial posi
35
holding said second mentioned valve open during _tion a predetermined plural number of times to
a plural number of rotative movementsof said- terminate the actuation of the motor and to cu‘t~
off the supply of cleaning fluid to the blower ele
blower element, said means providing for a clos
ing of said second mentioned valve after a pre
40
determined plural number of rotative movements
of the blower element.
6. In a fluid heater cleaner, a rotatable blower
element, a valve controlling the admission of
cleaning fluid to the blower element, means for
periodically actuating said valve upon rotation
of the blower element, a fluid motor for rotating
the blower element, a valve for admitting fluid
under pressure to said fluid motor to actuate'the
latter, a holding means for retaining said second
mentioned valve in open position, and means ac
tuated in timed relation to the operation of said
first mentioned valve for releasing said holding
me-ans after a predetermined plural number of
rotative movements of said blower element.
'7. In a fluid heater cleaner, a rotatable blower
element, a fluid motor for rotating said blower
element, a valve for controlling the admission
of fluid under pressure to said fluid motor, means
for opening said valve and for holding the same
open, and means operating in timed relation `to
60 the rotation of the blower element to actuate said
valve opening and holding means to provide for
a closing of said valve after a predetermined
plural number of rotative movements of the
blower element, each rotative movement of the
blower element including movement thereof away
from and substantially back to its initial position.
8. In a fluid heater cleaner, a rotatable blower
element, a fluid motor for rotating said blower
element, a valve controlling the admission of fluid
under pressure to said fluid motor, means in
cluding a cam for opening said valve and for
holding the same open, and means operating
upon rotation of' said blower element to move
said cam to provide for a closing of said valve
ment.
12. In a fluid heater cleaner, a movable blower 40
element, a motor connected to said blower ele
ment for moving the same, means operating in
timed relation to the operation of said motor for
admitting cleaning fluid to the blower element,
a flexible actuating member, means operating 45
upon the application of a single pull to said actu
ating member to start the operation of said motor
to thus initiate the movement of the blower ele
ment, and means operating after a predetermined
plural -number of rotative movements of the
blower element through 360 degrees to return said
actuating member to its original position to ter
minate the operation of said motor and to cut
off the supply of cleaning fluid to the blower ele
ment.
,
55
13. In a fluid heater cleaner, a movable blower
element, a fluid motor for moving said blower ele
ment, a valve controlling the flow of fluid under
pressure to said fluid motor, means including a
movable member for opening said valve and for 60
holding the same open, and means operating
upon movement of said blower element to move
said movable member to provide for a closing of
said valve after said blower element has been
moved away from and returned to its initial posi-_ 65
tion a predetermined plural number of times.
14. In a fluid heater cleaner, a rotatable blower
element, a cleaning fluid supply line for said
blower element, a valve in said supply line, means
operating to open said valve during a portion of 70
the rotation of the blower element, a fluid pres
sure actuated motor connected to said blower ele
ment for rotating the same, a conduit for supply
ing fluid under pressure to said fluid motor, a
valve in said conduit, means for opening said 75
l2
8,110,584
valve, and means actuated by the pressure of the
cleaning fluid supplied to the blower element
upon opening `of the valve in the cleaning fluid
supply line for holding said second mentioned
valve open whereby fluid under pressure is sup
plied to said motor whenever cleaning fluid is
supplied to said blower element.
15. In a fluid heater cleaner, a movable blower
element, power driven means for moving said
blower element through a plurality of cycles of
movement, each cycle including a movement of
the blower element away from and substantially
back to an initial starting point, means control
ling the supply of power to said power driven
means, and means operating after said control
means has been actuated to supply power to the
power driven means to prevent the cutting oil of
the supply of power to the power driven means
until the blower element has been moved through
20 a predetermined plural number of cycles of move
ment.
16. In a fluid heater cleaner, a movable blower
element, a source of supply of cleaning fluid, a
valve controlling the flow of cleaning .fluid to
the blower element, means for actuating said
valve in timed relation to the movement of the
blower element, power driven means for moving
the blower element through a plurality of cycles
of movement, means controlling the supply of
power to the power driven means, means operat
ing after said control means has been actuated to
supply power to the power driven means to pre
vent the cutting oil“ of the supply of power to
the power driven means until the blower element
f has been moved through a predetermined plural
number of cycles of movement, and means actu
ated by said valve and operating upon the com
pletion of the movement of the blower element
through said predetermined plural number of
40 cycles of movement to provide for the cutting off
of the supply of power to the power driven means.
1'7. In a fluid heater cleaner, a movable blower
element, a fluid motor connected to said element
for moving the same through a plurality of cycles
of movement, each cycle including movement of
the blower element away from and substantially
back to an initial starting position, a source of
supply of fluid under pressure, a valve control
ling the ñow of fluid from said source to said fluid
motor, and means operating when said valve is
opened to prevent closing of the valve until the
blower element has been moved through a pre
determined plural number of cycles, said last
mentioned means then providing for a closing of
said valve.
18. In a fluid heater cleaner, a movable blower
element, a fluid motor connected to said blower
element for moving the same through a plurality
of cycles of movement, each cycle including
movement of the blower element away from and
substantially back to an initial starting position,
a source of supply of fluid under pressure, a valve
controlling the flow of fluid under pressure from
said source to the motor, means for holding said
' valve open, and means controlled by movement
of the blower element for closing said valve after
the blower element has been moved through a
predetermined plural `number of cycles of move
ment.
19. In a fluid heater cleaner, a rotatable blower
element, a fluid motor connected to said blower
element for rotating the same, a source of sup
ply of fluid under pressure, a valve for control
ling the flow of fluid under pressure from said
source to said fluid motor, means for opening
said valve. means to hold said valve open, and
means operating to move said last mentioned
means to provide for closing of the valve after a.
predetermined plural number of rotative move
ments of the blower element through 360 degrees.
20. In a fluid heater cleaner, a rotatable blower
element, a source of cleaning fluid under pres
sure, a valve controlling the flow of cleaning fluid 10
from said source to the blower element, means for
actuating said valve in timed relation >to the rota
tion of the blower element, a fluid motor connect
ed to the blower element for rotating the same,
a second valve controlling the flow of cleaning
fluid to said fluid motor, means for opening said
second valve, means for holding said second valve
open, and means actuated by said flrst mentioned
valve upon actuation thereof to move said holding
means to provide for closing of said second men 20
tioned valve after a predetermined plural num
ber of rotative movements of the blower element.
21. In a fluid heater cleaner, a movable blower
element, a source of supply of cleaning fluid
under pressure, means controlling the flow of 25
cleaning fluid to the blower element, a fluid motor
connected to the blower element for moving the
same, a valve member operable in one position '
to admit cleaning fluid from said source to the
motor and operable in a second position to admit 30
cleaning fluid from said element to the motor and
to cut off the direct supply of cleaning flui?. from
the source to the motor, and means for actuating
said valve member.
22. In a fluid heater cleaner, a movable blower 35
element, a source of supply of cleaning fluid
under pressure, means controlling the flow of
cleaning fluid to the blower element, a fluid
motor connected to the blower element for mov
ing the same, a valve member operable to con
trol communication between the source of sup
40
ply of cleaning fluid and the motor and between
the blower element and the motor, means for
moving said valve to place said fluid motor in
communication with the source of supply of
cleaning fluid, and means providing for move 45
ment of said valve to a position where it places
the blower element in communication with the
fluid motor upon the admission of cleaning fluid
to the blower element.
23. In a fluid heater cleaner, a rotatable blower
element, a source of supply of cleaning fluid, a
valve controlling the flow of cleaning fluid from
said source to the blower element, means for
actuating said valve in timed relation to the ro
tation of the blower element, a fluid motor con
nected to the blower element for rotating the
same, a valve controlling the admission of fluid
under pressure to the fluid motor, means nor
mally acting to close said valve, a member mov
able to a position where it opens said valve and
holds the same open, a second member for hold~
ing said last mentioned member in the position
where it holds the valve open, and means con
nected to the cleaning fluid control valve and
actuated thereby for moving the second member
to a position where it releases said first member
to permit closing of the valve.
NORMAN L. SNOW.
WILLIS P. THOMAS.
HARRY E. BRELSFORD.
CURTIS L. HOWSE.
FRANK BOWERS.
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