close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2126565

код для вставки
Al1g~ 9, 1938.
F. w. LnNAKER
2,126,565
BOILER CLEANER
Filed Feb. 27, 1935
e sheets-sheet 2
)NVE/vrom
FEEDER/cfr w. ¿mA/ven'
Aug. 9, 193s.
F. w. LINAKER
l
2,126,565
BOILER CLEANER
` Filed @13.27, 1955
e sheets-sheet s
/NyE/vro e:
FFEDEE/C/r l/V. L/NA KE@
Aug., 9, 1938.,
’
F. W. I_INAKER
2,126,565
BOILER CLEANER
` Filed Feb. 27, 1955
e sheets-sheet 4
á
6
By
v
Hrro/êA/Er.
Aug. y 193..
F.
BOILER
W. LINAKER
CLEANER
-
Filed Feb. 27, 1955
27
|
/04
/37
1- mu f
e sheets-sheet 5
f
F/Gz 25.
„
" ßYW-„ÃFQQ
` Imag., 9, W38..
F. W. LINAKER
4
¿M6565
BOILER CLEANER
Filed Feb. 27, 1935
fag
6 Sheets-sheet> 6
'5y ¿L?
ì
@TTQENEK
Patented Aug. 9, 1938
2,125,565
UNITED STATES PATENT OFFICE
2,126,565
BOILER CLEANER
Frederick W. Linaker, St. Louis, Mo.
Application February 27, 1935, Serial No. 8,418
3 Claims. (Cl. 122-392)
My invention has relation to improvements in indicated by the lines 4-4 and 5_5 in Fig. 3 ;
boiler cleaners, and it consists in the novel fea
tures of construction more fully set forth in the
speciiication and pointed out in the claims.
The invention is primarily directed to that
type of boiler cleaner wherein a blower, provided
with longitudinally disposed nozzles, is disposed
tional detail similar to that shown in Fig. 6 with
the valve actuating mechanism restored to its
“at rest” position while the Valve is open; Figs. 8
across a bank of boiler tubes and arranged for
movement so that steam may be directed to dif
and 9 are vertical cross-sectional details taken
on planes indicated by the lines 8-8 and 9~9
mechanism a ratchet device‘whereby said tube
is rotated by steps or impulses, and comes to a
in Fig. 3; Fig. 10 is a section similar to that shown
in Fig. 9 with the valve actuating cam in posi
tion to hold the valve open; Figs. 11 and 12 are
vertical cross-sectional details taken on planes
indicated by the lines I i-l I and I2--l2 in Fig. 3;
Fig. 13 is a section similar to that shown in Fig 12
with the blower tube actuating mechanism set to
impart a rotation impulse to the blower tube;
Fig. 14 is a vertical cross-section similar to Fig. 13
showing the actuating mechanism at the begin
ning of such rotation impulse; Fig. l5 is a ver .20
tical section similar to Fig. 14 with the actuating
mechanism at the end of the rotation impulse;
Fig. 16 is a section similar to that shown in Fig. 13,
except that the cams and pawls of the blower
actuating mechanism have been reversed to im
part movement to the blower tube in a direction
opposite to that in which the blower tube will
rotate in Fig. 13; Fig. 1'7 is an elevational detail
complete rest between impulses.
of the oscillating stop for arresting movement of
ferent parts of the boiler to remove deposits
from the boiler tubes. The valve casing which
contains the valve for controlling the discharge
of steam against the boiler surfaces has mounted
on it actuating mechanism for the blower tube,
13 and in the present instance said mechanism is
arranged to rotate the blower tube by impulses,
the tube remaining stationary between rotation
impulses so as to permit the steam to play upon
the boiler surfaces for a suñ‘icient length of time
2.0 to effectively remove the deposits therefrom.
Among the objects of the present invention are»
the following:
1. To provide a boiler cleaner having a single
actuating means for both the steam control valve
2.5.»
Fig. 6 is a cross-sectional detail similar to that
of Fig. 5, except that the valve mechanism has
been actuated to open the valve; Fig. 7 is a sec
and the blower tube.
‘
2. To embody in the blower tube rotating
3. To provide separate means for controlling
the valve and for operating the blower tube, but
associating both of said means with a single
actuating means so that by moving in one direc
tion the valve alone will be operated, and by
35 moving in the opposite direction after the valve
is operated, the blower tube alone will be actu
ated.
.
4. To completely separate the valve with its
operating mechanism and blower tube operating
40 mechanism from the blower support and from
the blower head, although associating the parts
for separate operation by a single means.
These objects together with the advantages in
herent in the invention will be better apparent
45: from a detailed description of the same in con
nection with the accompanying drawings, in
which:
Figure 1 is a front elevation of my improved
boiler cleaner; Fig. 2 is a side elevation of the
50 head thereof, support, and the actuating mecha
nism mounted on the valve casing, the blower
tube and steam supply pipe being broken away;
Fig. 3 is a vertical, middle, longitudinal section
taken on the line 3-3 in Fig.` 1; Figs. 4 and 5
55. are vertical cross-sectional details taken on planes
the blower tube at the ends of its blowing arc; 30
Fig. 18 is a vertical, sectional detail similar to
that shown in Fig. 4, except that only the clutch
for the blower tube actuating mechanism and
actuating wheel hub are shown, the periphery of
the actuating wheel being broken away; Fig. 19
is a diagrammatic view of the associated parts
showing said parts ior the at rest position of
the blower; Fig. 20 is a diagram of the same parts
showing their position when the operating chain
has been pulled to open the steam valve, but 40
before the blower tube has been moved; Fig. 20a
is a diagram showing the positions of the parts
after the operating chain has been released;
Fig. 21 is a diagram of said parts showing their
respective positions after the operating chain has 45
been pulled to rotate the blower tube; Fig. 22 is
a diagram of the same parts showing their re
spective positions after the blower tube has been
moved one step along its blowing arc; Fig. 23 is
a diagram of the samelparts showing their re 50
spective positions after the operating chain has
been pulled to effect a closing of the steam valve
after the blower tube has reached its position at
the end of the blowing arc; and Fig. 24 is a dia
gram of the same parts showing their positions
2
2,126,565
after the operating chain has been released and
the valve actuating parts permitted to return to
their at rest position. In this position I have
the same conditions that exist in the at rest posi
tion shown in Fig. 19, except that the blower tube
has been rotated through a 360° arc, and for the
next blowing operation will be rotated in a direc
tion opposite to that in which it was rotated by
the operation commenced in Fig. 21.
Fig. 25 is
10 a side elevation of a modified form of my im
proved boiler cleaner shown applied to the boiler,
part of the wall of which is shown in section;
Fig. 26 is a front elevation of the modified form.
of boiler cleaner; Fig. 27 is a cross-sectional detail
15 taken on the line 21--21 of Fig. 25 with the valve
and blower actuating mechanism in their at rest
positions; Fig. 28 is a section similar to that
shown in Fig. 27 with the valve operating lever
slightly moved at the beginning of the operation
20 for opening the steam supply valve; Fig. 29 is a
cross-sectional detail taken on the line 29--29 of
Fig. 25 showing the pawls for actuating the
blower tube ratchet in their at rest position;
Fig. 30 is a cross-sectional detail taken on the
25 line 30-30 of Fig. 25 showing the stop mecha
nism for limiting the movement of the blower
tube actuating lever; Fig. 3l is a section similar
to that shown in Fig. 27, except that the valve
actuating lever has been moved to its position
30 for fully opening the steam supply valve; Fig. 32
is a section similar to that shown in Fig. 29,
except that one of the pawls for actuating the
blower tube ratchet has been disengaged from
said ratchet by the movement of the valve actu
35 ating lever to the position shown in Fig. 31;
Fig. 33 is a section similar to that shown in
Fig. 28, except that the blower tube actuating
lever has been moved downwardly to eiîect a
partial rotation of the blower tube; Fig. 34 is a
section similar to that shown in Fig. 29, except
that the right hand pawl has been moved to a
position to impart a rotation impulse to the
blower tube ratchet; Fig. 35 is a middle, longi
tudinal, sectional detail taken on the line 35-35
45 of Fig. 26 with parts broken away; and Fig. 36
is a face view of the combined ratchet and brake
member.
Referring to the drawings, B indicates the wall
of a boiler on which my improved boiler cleaner
50 is mounted. According to established practice,
a hollow casing I, known as a wall sleeve, is ñxed
in an opening O in the boiler wall and a support
ing member 2, called the wall plate, is secured
by suitable bolts 3 to a iiange 4 formed on the
55 wall sleeve I. The wall sleeve plate 2 is provided
with a bracket 5 which carries the operating
head A through an adjustablev plate 6, coiled
spring 1 and saddle member 8. The saddle mem
ber 8 has a centrally disposed boss 9 from which
60 projects a stud I0 on which is adjustably posi
tioned a washer II by means of a nut l2. The
stud I0 passes through vthe coiled spring 1 and
suitable openings I3 and I4 in the plate 6 and
bracket 5, respectively, so that the weight on the
65 operating head is resiliently supported by the
spring 1.
The head A includes a supporting bracket I5
for supporting the valve casing I6 and has a
flange i1 formed on its outer end on which is
70 iixed a gear I8 so that as the gear I8 is rotated
the head A will be rotated with it, the bearing
saddle 8 serving as a support for the head. The
bracket I5 is provided with a ring 20 on its inner
end, said ring having a marginal recess 2| and
75 which, together with the opposed marginal recess
22 of a coupling member 23, forms a channel for
receiving the saddle 8.
The valve casing I6 has a steam outlet branch
I6’ provided with a threaded opening I9, in
which is screwed one end of a tubular member 5
I9', the other end of said member passing through
the ring 20 and having a conical flange 24 formed
on it. Between the conical flange 24 and the ring
20 is a bearing’element 25 held tightly in place
by the coupling member 23, a threaded flange 23’ 10
of which is screw-threaded to receive the outer
end 26 of the blower tube T.
The coupling member 23 is bolted to the ring
25 by a plurality of bolts 21. Thus the bearing
element 25 is frictionally held between the 15
bracket I5 and the coupling 23 so that it will
rotate with these elements while the tube I9’
. will remain stationary. In order to make the
joint between these movable and stationary parts
steam-tight, suitable packing material 28 is 20
packed in the space behind the bearing element
25 and held in place by means of a gland 29
carried by the 'bracket I 5 and maintained in close
contact with the packing 28 by means of springs
35 disposed over studs 3| and coniined between 25
the gland 29 and a washer 32 held in place by
nuts 33, 34. The construction of the boiler
cleaner head which has just been described is
similar to that of my copending application Serial
No. 755,135, ñled November 28, 1934, and will not
be further described.
The valve construction of the present applica
tion is also the same as that of above said appli
cation and may be briefly described as embody
ing a main steam valve 35 operable in a cage 35
35 and a pilot valve 31 within the main valve,
said pilot valve being formed on the valve stem
38, which traverses a stuffing-box 39 in the top
wall 4!) of valve casing IG and also a guide
bracket 4I formed integral with a supporting (0
bracket and bearing 42 for the valve actuating
and blower tube mechanism, which forms the
subject-matter of the present invention and will
be described hereinafter. A coiled spring 43 op
erates between stuiiing-box 39 and a nut 44 on 45
the valve stem 38 and, of course, is for the pur
pose of quickly restoring the valve to its seat
when the mechanism is actuated to close the
same.
The valve actuating mechanism comprises a 50
chain wheel 50 rotatably mounted on the outer
end of a shaft 5I carried in the sleeve or hollow
shaft 52 which is mounted in bearing 42. Within
the groove 53 of said chain wheel are a plurality
of equally spaced pins 54 for engaging with chain 55
55 by which the wheel is operated. and within
the rim 56 of said wheel are a plurality (eight in
the present instance) of ratchet teeth 51. A
yoke 58 is mounted for rotation on the outer end
of bearing 42 and on the hub 50’ of chain wheel 60
58 and has a boss 59 projecting forwardly so as
to come within the rim 55 of wheel 50, which boss
has two sockets 68 and 6I formed in it, the former
being the outermost and opening toward the
chain wheel rim 56, and the latter being the 65
innermost and opening between the sides 62, 62’
of the yoke. A bolt 63 is disposed in socket 60
and has a spring 64 behind it so as to constantly
urge the bolt outwardly so that it will ride on
the inner surface of rim 56 and engage the 70
ratchet teeth 51 thereon. A four-toothed ratchet
65 and double acting cam 66 formed integral
with said ratchet is ñxed to the hollow shaft 52
(or integral therewith) in the space between the
sides 62, 62’ of yoke 58, and a pawl 61 is pivotally 75
3
2,126,565
carried by the outer side 62’ of the yoke so that
its engaging part 68 will engage the teeth of the
ratchet 65. The pawl 61 has a forward exten
sion 69 in which there is a pin 10 for receiving
one end of a coiled spring 1| disposed within
socket 6I in the boss 59. Thus the spring 1I
will keep the pawl 51 in engagement with the
ratchet 65. Projecting upwardly from the
bracket 4I is a lug 12, on which is pivotally
10 mounted a lever 13, which projects laterally
from its pivotal point over the valve stem 38 and
against which cam 86 operates so as to- take the
wear which would otherwise come on the end of
15
the valve stem.
The side 62’ of the yoke 58 is substantially tri
angular in shape, at one angle of which the pawl
61 is pivoted, and at the other two angles` there
are points 14, 14 bent slightly inwardly so as to
come in line with the outer end of bracket 4I,
20 against which these points will impinge in the
operation of the valve mechanism so as to serve
as stop members to limit the rotation of the
25
30
35
40
yoke to an angle of 90°. A coiled spring 15 is
disposed about the bearing 42 and has one end
secured to arm 62 of yoke 58 and the other end
fixed to the bracket, the purpose of which is to
restore the yoke 58 to its at rest position after
it has been actuated to open the valve. This
will be more fully explained in the operation of
the invention.
The mechanism for actuating the blower tube
T includes the chain wheel 58 on the outer face
of the hub 50’ of which is a clutch element 16
which engages clutch element 11 of the clutch
member 18 when the chain wheel 58 is turned in
a clockwise direction when pulling on the right
hand side of chain 55. Clutch 18 is keyed or
otherwise secured to shaft 5I so that the turning
of the chain wheel 50 in a clockwise direction
will rotate the shaft 5|, on the inner end of
which is fixed an eccentric 19. The hollow shaft
52 terminates short of eccentric 19 and has a pair
of cams 88, 8| fixed on its inner end. The ec
centric 19 operates within a raceway 82 adjacent
45 to a frame or yoke 83 encasing the cams 80 and
8| and rotatably mounted on the branch I6’ of
valve casing I6. The raceway 82 forms the upper
part of a frame 84 which is rotatably mounted on
a ring 85 formed on the outer end of bracket I5.
50 Thus the frame 83 and frame 84, being secured
together at their margins by screws 86, are
capable of oscillating or rocking back and forth
as a single unit.
Pivotally mounted within the frame 83 below
L1 La the cams 88 and 8| on pins p, p’ are a pair of
pawls 81 aind 88 having rearwardly extending
levers 89 and 98, respectively, extending beneath
the cams 80 and 8| which are adapted to actuate
the pawls by contact with said levers.
Each pawl
60 81, 88 has a downwardly extending nose n for
engagement with the teeth of the gear wheel I8
and when the pawls are not otherwise restrained
they will by their own weight drop so that said
nose will mesh with the teeth of said gear.
A stop pin 9| projects forwardly from the gear
I8 and cooperates with a stop member 92 piv
otally mounted on a bolt 93 ñxed into the valve
casing I6.
The stop member 92 is in the form
of a lever having its lower arm 94 operating be
tween lugs 95, 95 projecting upwardly in spaced
relation from ñange f of valve casing I6. Said
ñange f has a second flange 96 bolted to it, into
which is screwed a steam supply pipe 91.
The foregoing completes the description of the
5. construction of the main form of my improved
boiler cleaner, the operation of which will be
better understood from the following description
in connection with the diagrammatic views, Figs.
19 to 24, inclusive.
In the‘diagram Fig. 19 the operating parts of
the blower are shown in their at rest position, in
which they are also shown in Figs. 1 to 5, in
clusive, and Figs. 8, 9, 11, 12 and 17, inclusive.
The valve 35 is closed and the stop pin 9| is in
engagement with the stop member 92. If the
operator now pulls on the left side of chain 55
the wheel 58 will be rotated in a counter-clock
wise direction, but the shaft 5| will remain sta
tionary because of the lost motion or play be
tween the clutch membersl 16 and 11.
In its rotation through 90° the wheel 50 will
rock the yoke 58 through an angle of 90° be
cause of the engagement of one of the teeth 51
with bolt 63 carried by the yoke. As the yoke 58
carries the pawl 61, this pawl will also be moved 20
through an angle of 90° and through its. engage
ment with ratchet 65 rotate the ratchet and the
cam 66 through an angle of 90°. The rotation of
the cam 66 depresses the lever 13 and valve stem
38 so as to open the valve.
The valve will be 25
fully opened when the yoke _58 has moved through
an angle of 90°, at which time one of the points
14 will engage with the outer end of bracket 4|
to arrest any further movement of said yoke.
The movement of the wheel 58 obviously is also 30
arrested at this time and the operator knows that
the valve 35 is fully open. Since the hollow shaft
52 is fixed to the cam 66, the hollow shaft 52 will
also rotate through an angle of 90° while the
valve 35 is being opened, as just described, and
since the cams 88 and 8| are fixed on the inner
end of shaft 52 said cams will also be rotated
through an arc of 90°. Thus at the end of the
90° rotative movement of the Wheel 58 the valve
35 has been opened and the respective parts have
assumed the position shown in the diagram Fig.
20. It will be observed that in Fig. 19 both the
pawls 81 and 88 were in engagtment with the
teeth of gear wheel I8, but in Fig. 20 the rotation
of cam 80 has caused pawl 81 to be disengaged 45
while pawl 88 remains in engagement with the
teeth of gear I8.
If the operator now releases
the left hand side of chain 55 the coiled spring
15 will oscillate the yoke 58 and wheel 58 back
to its starting position, the other parts, however,
remaining unaiïected (Fig. 20a).
The operator may now pull on the right hand
side of chain 55 to rotate the wheel 50 in a clock
wise direction (Fig. 21). During this movement
of the wheel 58 the valve actuating mechanism
is unaffected since the bolt 63 will idle over the
teeth 51 of the wheel 58. However, the shaft 5|
will be rotated as will the eccentric 19 at the
end of said shaft. The rotation of the eccentric
19 through one complete revolution Will rock the
frames 83, 84 ñrst to the left (as shown Fig. 21)
when the frames have rocked to one extreme and
the pawl 88 engages a tooth of gear I8, and
then to the right (Fig. 2'2) so as to cause the pawl
88 to rotate the gear I8 in an amount equal to the
spacing of one tooth. A continuation of the ro
tation of the wheel 58 in a clockwise direction
causes aY continuation of the oscillating of the
frame 83, 84, and every time said frame swings
to the right (referring to the diagrams 2.1 and
22) the gear wheel I8 will be rotated through one
tooth until ñnally a complete revolution of said
gear is effected and further rotation is arrested
by the impingement of pin 9| against the stop
lever 92.
After the gear Wheel I8 and, of course,
4
2,126,565
the blower tube T have been rotated through a
complete revolution the valve 35 may be closed
by again pulling on the left'side of chain 55, as
shown in the diagram Fig. 23. The rotation of
the cam 66 through an angle of 90°, to effect the
closing of the valve 35, also rotates the hollow
shaft 52 through an angle of 90°, which changes
the positions of the cams 00, 8| so that both of
10
15
20
25
30
the pawls 81, 88 will be released to engage the
gear wheel I8. If the operator now releases the
left side of chain 55 the yoke 58 will be restored
to its normal position under the action of spring
15 and the parts are again in an at rest position,
as shown in diagram Fig. 24. However, the stop
pin 9| is on the opposite side of the stop lever 92
from what it was in the previous at rest position
(Fig. 19), and the cams 80, 8| are in neutral
position so that when the valve 35 is again
opened, as the first step in the operation of the
blower, the pawl 88 will be held out of engage
ment with the gear I 8 and the pawl 81 will actu
ate the said gear in the opposite direction from
that in which it was rotated to effect the previ
ous blowing operation.
In the modified form of device shown in Figs.
25 to 36, inclusive, to which reference is now
made, the steam supply valve is actuated by a
cam |00, similar to the cam 66 of the main form,
said cam I 00 being formed integrally with a four
toothed ratchet |0I, similar to ratchet 65, except
that the ratchet |0| has a nub |02 formed on it
at the base of each tooth |03. A lever |04 ad
jacent to ratchet |0| is rotatably mounted near
the outer end of a hollow shaft |05 carried in the
35 spaced bearing brackets |06, |01 of the bracket
member |08, which is secured to branch I6’ of the
valve casing I6. The lever |04 has a housing |09
projecting laterally from it, and a pawl l |0 is piv
otally mounted on a pin ||| fixed in the outer
. most part I|2 of said housing.
The pawl ||0 is
formed with two points ||3 and I|4 laterally
spaced and also radially spaced with respect to
the rotation axis of the lever |04, the point ||4
being the outermost. The point || 3 is adapted
45 to cooperate with the ratchet |0| for the actua
tion of the steam supply valve, as will be eX
plained in connection with the operation of this
modified form of device, while the point ||4 en
gages with the ratchet ||1. However, when the
lever |04 is in its idle, resting position the point
I I3 rests on one of the nubs |02 to hold both
points |I3 and ||4 free from their respective
ratchets.
The lever |04 has a short arm |04', on
the end of which is an inwardly projecting finger
|04” adapted to engage a projection |08’ ex
tending forwardly from the bracket member |08
so as to limit the movement of the lever |04 up~
wardly. On the side of the lever |04, opposite
the housing |09, is a triangular projection II5
60 adapted to impinge on the projection |08’ to limit
the lever |04 in its downward movement.
A shaft | |6 is mounted within the hollow shaft
|05, said shaft extending beyond the hollow shaft
|05 at both the forward and rearward ends there
of. A ratchet wheel || 1, having a clutch mem
ber I I 8 formed integrally with it, is slidingly con
nected to or feathered on the shaft ||6 a short
distance from the outer end thereof, and a coiled
spring ||9 disposed between the hub h of wheel
||1 and a plate |20 serves to hold the clutch
member ||8 in engagement with hub |2| of a
second lever L keyed or otherwise secured on the
outer end of hollow shaft |05. A spring S is
coiled loosely around the hub |20 of lever L and
75 has one end fixed to lever |04 and the other end
fixed to lever L so as to restore said levers to their
upright positions after having been pulled down.
The member ||8 has a socket |22 formed on the
side opposite the hub h, in which socket there are
equally spaced ribs |23 for cooperating with
similarly disposed grooves |24 on the adjacent
face of hub |2| of lever L, the engaging surfaces
of ribs |23 and grooves |24 being so shaped that
a rotation of hub h will force the ribs out of the
grooves. Of course the spring ||9 yields to the 10
lateral move of the hub h on the wheel | I1.
The
outer end of shaft | |6 is screw-threaded to receive
a nut |25 which serves to hold the plate |20 in
place. It will be observed (Fig. 28) that the point
||4 of pawl ||0 is disposed for cooperation with 15
the teeth of ratchet II1. A clevis |26 is keyed or
otherwise fixed on the inner end of shaft I 05, just
inside the bearing |01 and above a gear |21 se
cured to the blower tube T in any desirable man
ner. Two pawls |28 and |29 are pivotally con
20
nected in spaced relation to the clevis |26 in such
manner that when said pawls are allowed to
drop- of their own weight their points |30, |3I,
respectively, will engage with the teeth of gear
wheel |21.
However, in operating the blower
only one of said pawls is actuated at a time and
the other pawl must be withdrawn from engage
ment with the gear |21.
This is accomplished by means of a member
|32 that may be called a setting plate, because 30
said member is provided with lugs |33 and |34 for
engagement with bosses |35, |36 of the respective
pawls to move said pawlsv away from gear |21.
The setting plate | 32 is fixed on the inner end
of shaft |I6 so that when said shaft is actuated
to open or close the main steam valve the pawls
|28 and |29 will be set in position to properly
rotate the gear |21. An operating chain |31 is
attached to the lever |04 and chain |38 is at
tached to the lever L. A stop member |39 is 40
fixed on the hollow shaft |05 and has lugs |39',
|39’ projecting from it and spaced an amount
corresponding to the throw of the'lever L which
is arrested either on its downstroke or upstroke
by the impingement of one or the other lugs |39’ 45
on the lug |4I formed on bracket |08.
The operator pulls on the chain |31 connected
to lever |04 to rock said lever downwardly, and
in so doing the points | I3 and | I4 engage ratchets
|0| and II1, respectively, to rotate said ratchets 50
through an arc of 90° after which the lever |04
is arrested by the impingement of the projection
I I5 against the stop member |08’. As the ratchet
|0| is rotated the cam'|00 will also be rotated
through an arc of 90° to depress the valve stem 55
38 and open the steam supply valve. The rota
tion of the ratchet I|1 also rotates the shaft ||6
and the setting plate |32 fixed on the inner end
thereof so that the lug |34 will engage the boss
|36 of pawl |29 to lift said pawl free from the 60
teeth of gear |21.
During the rotation of the ratchet ||1 the
spring ||9 will hold clutch ||8 in engagement
with hub I2| of lever L tending to move said
lever upwardly but stop member |39’ will engage 65
lug |4| of bracket I 08 to prevent any upward
movement of the leverL. I now have the posi
tion shown in Fig. 3l with the valve stem 38 fully
depressed by the cam |00 and the pawl |28 in
position (Fig. 32) to impart rotative impulses 70
to the gear |21. These impulses are imparted to
said gear by pulling downwardly on the right
hand chain |38 after first releasing the chain |31
to allow the lever |04 to return to its uppermost
position shown in Fig. 27. During this return 75
5
2,126,565
movement of the lever |04 the points ||3, ||4 of
pawl ||0 ride idly over the ratchets ||'| and |0|
until the lever |04 comes to rest, at which time
the point ||3 is resting on one of the nubs |02
so as to hold the point IIA clear of the ratchet
teeth ||'|- The operator may now pull down«
wardly on the chain |38 so as to oscillate the
the blower the blower will be advanced step by
step by the pawl |29 in the opposite direction to
its movement when it was actuated by the pawl
|28.
Having described my invention, I claim:
1. A boiler cleaner comprising a rotatory soot
blower tube, a steam valve, a swivel head, and
lever L and rock the hollow shaft |05 and shaft
a common means for operating the valve and ro
IIB which also rocks the setting plate |32 and
the clevis |26 to straighten out the joint between
pawl |28 and said clevis, and thereby impart
tating the blower tube, means comprising double
acting opposed cam surfaces to operate the valve,
a rotation impulse to the gear |2'l. If the oper
ator now releases the chain |38 the lever L will
said means being associated with the common
means which is effective thereon when moved in
one direction, and a ratchet device to operate
be pulled back upwardly by the spring S, restor
the blower tube, said device being associated with
15 ing the clevis |26 and pawl |28 to the position
shown in Fig, 32 so that the next impulse may
be given. When the lever L is in its lowermost po
sition the parts are in the positions shown in Figs.
33 and 34. Thus, every time the lever L is pulled
20 downwardly the gear |21 is rotated an amount
equal to the pitch of the teeth of gear |21.
When the blowing operation has been comä
pleted the stop pin 9| will engage the opposite
side of the lug 92. The lever |04 is now rocked
25 downwardly in the same manner as before to
rotate the cam |00 through an arc of 90°, which
releases the valve stem 38 and permits the steam
supply valve to close. During this last movement
of the lever |04 the setting plate |32 will be
30 rotated 90° beyond the position shown in Fig.
32, which brings the lug |33 opposite to the posi
tion it occupied in Fig. 29. 'I'he next time the
blower is operated the movement of the lever
|04 will rotate the setting plate |32 through an
35 arc of 90° causing the lug |33 to impinge on the
pin |35 and lift the pawl |28, the pawl |29 re
maining in engagement with the teeth of the
wheel |21. We now have just the reverse position
from that shown in Fig. 32. The pawl |28 is
40 raised free from the teeth of the wheel |21 and
pawl |29 is in engagement with said teeth.
Therefore, when the lever L is actuated to rotate
the common means which is effective thereon
when moved in the opposite direction.
2. A boiler cleaner comprising a rotatory soot
blower tube, a valve controlling the admission of
ñuid thereto, mechanism for operating said
blower tube, and mechanism for operating said 20
valve, the last mechanism comprising double
acting opposed cam surfaces and means for actu
ating said cam surfaces to advance through ap
proximately 90° steps to control the valve, and a
single operating device for successively operating 25
the second said mechanism and the blower tube.
3. A boiler cleaner comprising a rotatable
blower tube, an operating head connected with
said tube, a valve casing in communication with
said blower tube, a valve in said casing, and op 30
erating mechanism carried by said valve casing;
an operating sheave interconnected with both the
valve and the blower tube, means associated with
the operating mechanism for opening and closing
the valve with a rotation of the sheave in one 35
direction, the construction and arrangement of
the parts being such that a rotation of the
sheave in the reverse direction operates to ro
tate the blower tube between the opening and
the closing of the valve.
FREDERICK W. LINAKER.
40
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 389 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа