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Патент USA US2406659

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Aug. 27, 1945.
M, B, BOYCE
2,406,659
MECHANISM FOR PRESSURE DISCHARGE OF STREAMS OF LIQUID‘
Filed Oct._ 51, 1944
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Aug. 27, A1946. '
2,406,659
M. B-BOYCEY
MECHANISM FOR PRESSURE DISCHARGE OF STREAMS OF LIQUID
Filed 0d. 51, 1944
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2,406,659
Patented'Aug. 27, 1946
UNITED STATES-PATENT OFFICE‘. ~
MECHANISM FOR PRESSURE DISCHARGE
OF STREAMS 0F LIQUID
Malcolm B. Boyce, Haverhill, Mass. Y
i 7, Application October 31, 1944, $erial No. 561,314
v7 Claims. (01. 299-59)
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1
' 'Figure 4 is a cross-sectional view on line 4-4
This invention relates to ‘improvements in
mechanism for pressure discharge of streams of
liquid.
of Figure‘ 1;
'
'
,
Figure 5 is a cross-sectional view on line 5-5
'
of Figure 3; and '
More particularly it relates to a vacuum con- :
~
' Figure 6 is a diagrammatic view showmg the
trolled mechanism for intermittently delivering
streams of liquid under pressure through rela
tively minute ori?ces including automatic means
for cleaning the ori?ces following each intermit
nozzle operating and control mechanism. 7
Referring to the drawings, the nozzle unit shown
in detail in Figs. 1-5 is illustrated in the form
of a rectangular box In which preferably will be
tent delivery of liquid therethrough.
'
‘
The invention, has a ‘broad ?eld of v'utilityin :10 cast‘of a suitable metal, althoughit may be mold
ed oryotherwise formed of any suitable composi
the general art of discharging liquid in relatively
tion or plastic material, or even may be made
?ne streams, especially Where, conservation of the
up of wood sections or sections of any other suit
liquid is important and certainty ofe?icient op
eration is requisite.‘ Qne particular application ‘ ably strong and rigid material. The box [0 has
of the invention has been in association with a '15 it's top side closed by a cover plate I2 which may
be secured in any suitable manner, as by the
motor vehicle for lubricating the rubber tire treads
thereby to prolong the useful life of the' tires. ,
It is among the objects of my invention to pro
vide a liquid discharging mechanism for deliver
ing a liquid through one Or more small ori?ces‘ 20
during predetermined spacedapart time interva
and under vacuum control.
screws [4, a gasket I5 intervening to ensure a
watertightconnection; Ears I6 are provided ex
teriorly at the base of, the box for convenience
in mounting the unit at any desired location.‘
Within the box ID, as best seen in Figs. 3-5,
are two parallel upstanding walls l8 each sub
‘
stantially spaced from opposite side walls of the
box. Preferably the walls l8, have openings [9
Another object is to provide a liquid discharge
ing mechanism having one or more minute ori
?ces for intermittent delivery of liquid in one or 25 therethrough for free passage of water. Slidably
mounted, in the walls 18 are the ‘pins 20 of which
four'are shown,v it being understood that the num
ber' of pins is a matterof choice and may be
more Streams and having. means automatically
operative for mechanically cleaning each ori?ce
after each. delivery of liquid therethrough.
varied as desired.
‘Still another object is to provide a liquid dis
1
As represented, each pin has a relatively lon
cylindrical body 2!] ‘ nicely ?tting slidably in
charging mechanism having one or more minute
ori?ces and having means for vacuum controlled
aligned holes 22in the spaced interior walls l8,
intermittent mechanical cleaning of said ori?ces.
A further object is to provide a liquid discharg
one end of each pin having an axially projecting
ing mechanism having openable and. closable noz- \
needle 24 thereon preferably formed as an in
gas under pressure, a supply of liquid subjected
be a separate element if, secured. to the body
zle ori?ces, and including a supply of air or other 35 tegral part of the body 20, although the needle may
20 inI-a manner to eIlSure that it will not pull
to pressure of theyair, and a source of vacuum
for intermittently opening and closing the noz
zle ori?ces and controlled by pressure of said air.
out or become loose.
- , _ ,
According'to, the invention relatively small noz
zle ori?ces 25 are provided in the front wall of
box l0 and a pill. 26. is aligned with, each ori?ce
for intermittent closing and opening of the ori
?ce by movement of the needle part 24 into and
out of the ori?ce. Liquidis delivered under pres
'Yet another object is to provide a gang of
nozzle ori?ces and a gang of pins for closing and
simultaneously cleaning the ori?ces, and vacuum
controlled pressure means for intermittently clos
ing the nozzle ori?ces.
.
a
,
It is, moreover, my purpose and object gener 45 sure to the interior of box I 9 through conduit
ally to improve upon prior mechanisms for pres
28, and'discharges in ?ne streams through the
sure discharge of streams of liquid.
ori?ces 26 when they latter are open.
In the accompanying drawings:
Figure 1 is a front elevation of a nozzle unit
embodying features of my invention;
Figure 2 is a top plan of the unit shown in Fig
ure 1;
0 in a metal plate 30 secured on the front-wall of
box H] as by screws 3.2, with a suitable gasket 34
intervening.’ With this construction, relatively
large‘ holes '36 may be provided in the front wall
Figure 3 is ‘a top plan with the upper portion
of the unit removed, at line 3-3 of Figurel, to ~
show the interior of the nozzle chamber;
I
_ In order to facilitate manufacture and assem
bly of parts, the nozzle ori?ces 26 preferably are
.
of box, 10g opposite
the pins 20, and the pins,
I
55 before plate 30 is mounted, may be inserted
2,406,659
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4
through these holes 36 which must be larger in
diameter than the body 20 of a pin. Also, with
the needle ends 24 of the pins projected forward
through these holes 36, the plate 36 may be guid
ed to proper position by threading it on the pro
pressure, shown held in the air supply tank 90.
Assuming the invention mounted on a motor ve
hicle for lubricating the vehicle tires, the supply
By having the screw holes 38 in
tanks 88, 90 will be carried by the vehicle at any
convenient locations thereon. If the vehicle is
a motor truck having pneumatic brakes, the usual
the plate over-size, the plate may be secured in
pressure chamber for operating the brakes may be
jected needles.
utilized for supplying the gaseous pressure for
operating the nozzle. The suction of the intake
be properly aligned with the needles.
r 10 manifold of the internal combustion engine is
utilized for automatic control of the nozzle. It
All of the pins 20 operate in unison to and
should be understood, however, that any other
from closed positions. For this purpose and also
source of gaseous pressure and any other means
to prevent rotation of the pins, a tie rod 40 ex
tends through all of the pin bodies 20, the tie rod, ' of providing controlling suction or vacuum may
as represented having its opposite ends bent as, 15 be employed without departing from the intended
scope of the invention.
at 42 for maintaining the tie rod in pin-connect
its position determined by its said threading on
the needles, ensuring that the ori?ces 26 will
ing position.
As herein illustrated, the liquid supply conduit
The pins 20 are operated in unison by means of ’ 1 28 extends from the liquid supply tank 88 and
opens into the interior of box I0, a valve 92 in
a rock shaft 44 mounted in liquid tight bearings
conduit 29 controlling the ?ow of liquid.
46 in opposite side walls of box I0, the rock shaft
extending across the interior of the box below and
transversely of the pins at a mid locationbetween
the interior spaced walls I8. Two rocker ?ngers
48 are secured to the rock shaft interiorly of the
Air in
tank 90 may be maintained at a desired pressure
by any suitable means ( not shown). A conduit
94 leads from this tank through the regulator
valve 96 and through control valve 98, beyond
box, each bifurcated at 50 for engaging the tie 25 which it connects with conduit 66 opening into
rod 45 between its bifurcations. Hence any rock
ing of shaft 44 causes unitary movement of the
pins 20 toward or away from the nozzle ori?ces 26.
Mounted on the cover plate I2 of box I0 is a
cylinder 52 having a piston 54 operable therein. 30
As represented, the cylinder 52 is clamped sta
tionarily in a support 56 upstanding‘ on cover
plate I2, the cylinder resting on a semi-cylindri
cal grooved seat 58 in the upper part of the sup
port and being clamped therein by a semi-cylin
35
drical cap 60 secured by screws 62. A set screw
64 may be provided, if desired, as a further 're
taining means for the cylinder in the clamp.
.As best seen in Fig, 4, the piston 54, in response
the cylinder chamber 53. A branch conduit I00
opens from conduit 94 into the upper part of the
liquid supply tank 88 thereby to subject liquid in
tank 88 to the pressure on the low pressure side
of the regulator valve 96. Preferably a pressure
gauge I92 is provided in conduit 94 adjacent the
pressure tank 90, and a similar pressure gauge
I04 in conduit 94 beyond the branch conduit I06
for readily checking prevailing pressures,
According to my invention the supply of air
under pressure is openedonly intermittently into
cylinder chamber 53 so that the pins 20 and more
to gaseous pressure entering the cylinder cham- "
particularly ‘their needle ends 24 will intermit
tently close and open the nozzle ori?ces during
operation of the mechanism. Also both supply
ber 53 through theconduit 66, moves to the left
in Fig.v 4 against‘ the resilience of a coil spring 68
which latter restores the piston to its position of
96, 92 excepting when suction in vacuum line I06,
communicated to the interior of vacuum cylinder
conduits 94 and 28 are closed by the control valves
Fig. 4 when the pressure is relieved and the con
I08, permits atmospheric pressure to elevate the
duit 66 opened to atmosphere. A vent 55 is pro
vided on the spring side of the cylinder. ‘It will
be observed that the cylinder 52 is so arranged
that the movement of the piston under gaseous
pressure is generally parallel with and in the same
direction as the paths of movement of the pins 26
piston H0 in vacuum cylinder I08 against the
from openrto closed positions.
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According. to the invention, a movement of the
piston 54 causes movement of the pins 20. This
is accomplished by forming a shank ‘ID on the
piston and having the shank extend an appre
ciable distance outward through the end wall of
cylinder 52, for operable connection to the rock
shaft 44. The connection may be variously ef
fected although I prefer the illustrated form
wherein a pair of rocker arms ‘I2 have link con
nection to the piston shank. Each rocker arm
may have its lower end secured on a non-round
portion ‘I4 of a projecting end of the rock shaft
44, held on by a nut ‘I6 and a cotter pin ‘I8. The
upper end of each rocker arm ispivotally con- .
nected at 80 to one end of a link 82 whose other
end is pivotally connected ati84 to a'sti?‘ rod or
pin 86 rigid with piston shank ‘I0 and projecting
at opposite sides thereof. A pair of pins 81 pro-,
ject from the cylinder head and prevent rotation
of the piston.‘
,
_
.
V,
,7
Referring now to the diagrammatic showing of.
Fig. 6, my improved mechanism includes a suit
able supply of liquid, shown held in the liquid
relatively light pull of coil spring II 2 which is
connected to the projecting end of the piston
shaft II4rand to a fixed anchorage at I I6 which
may be a bracket mounted on the conduit 28.
0 The control valves 98, 92 are connected vto the
01 v
piston shaft H4 at II8 so that spring IIZ draws
them to closed position except when suction or
partial vacuumrprevails in the suction line.
Intermittent opening and closing of pressure
conduit 94 is accomplished by means of two vac
uum motors I20 which may be regular wind shield
wiper motors whose reciprocating arms I22 are
connected to the upper end of links I23 whose
lower ends are connected to cranks I24 on oppo
site ends of a worm I26 mounted for rotation in
suitable bearings I26.
The reciprocating arms
I22, acting through the links I23, turn the cranks
always in the same direction thereby to rotate
the worm I26 always in the same direction. The
cranks are positioned so that both can never
be on dead center at the same time.
The worm I26 has meshing therewith aworm
Wheel I 30 ?xed on a shaft I62 which extends
between the two valves I64, I36 which may be
of a type which. open and close by rotation in
onedirection. vThe valve stem of valve I34 is
connected to one end of shaft I32 and the valve
stem of valve I36 is connected to the opposite
end of shaft I32, and the valves are’ disposed so
supply tank 86, and a suitable supply of air under‘ 75 that rotation of worm wheel I 39 opens and closes
2,406,659
5
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the valves intermittently and inv slow succession
liquid onto the, tread of each tire, preferably at
with one valve always open when the other is
starts downward toward. road'engagement, so
that each portion of tread moving to road-en
gaging position- will have a lubricating ?lm of
liquid thereon 'for reducing frictionalwear upon
the tread.
closed.
'
.
,
a location where the liquid will hit the tread as it
Valve H4 is in the pressureconduit 94'; between
the shut-off valve $6 therein and the conduit
65. Valve 53$ is anlexhaust valve connected to
conduit 65 for exhausting air from cylinder 53
I claim as my invention:
.
after each pressure operation of its piston 5d.
l. Mechanism for pressure discharge of liquid,
Assuming a suitable gaseous pressure in tank
99, which may be one hundred pounds per square 10 comprising a chamber having a piurality of ori
?oes in a wall thereof, a plurality of pins within
inch, for example, if the pressure is required to
the chamber and interconnected for movement
operate pneumatic brakes, the regulator valve 95
axially toward and from said ori?ces in unison,
may reduce the pressure to say twenty pounds
rock. shaft extending into said chamber, con
per square inch in the system beyond it. If the
engine is not running, both shut-oil valves $8, 15 nections between the rock shai't and the pins
whereby rotary movement of the rock shaft ef
92_will be closed. As soon as the engine starts
iects atrial movement of said pins, a cylinder with
anda partial vacuum is created in vacuum cylin
spring backed piston the *ein adjacent to said
der I88, piston Ht therein will be forced upward
chamber, connections between said piston and
by atmospheric pressure and the valves HS, $23
said rock shait whereby movement of said piston
will be opened. Starting of the engine will have
in direction opposed by said spring rocks said
started the vacuum motors E26 which in turn
rock shaft in direction 1 to project said pins
will have started operation of the control valve
through said ori?ces and movement of the pis
I34 and exhaust valve A35, so that, as soon as
ton in direction urged by said spring rocks said
the shut-oil" valves 58, 92 are opened, air under
in direction to retract the pins from
pressure will be delivered intermittently into 25 rock
said ori?ces, means for supplying liquid under
cylinder chamber 53 and intermittently ex
pressure to said chamber, and means for inter
hausted therefrom, and liquid will be delivered
mittently applying force to said piston to move it
under pressure into box l8. Each charge of
in direction opposed by said spring.
entering air will force the piston iii to the left
(Fig. 4) against the resilience of spring 58, thereby 30 2'. Mechanism for pressure discharge of liquid,
comprising a chamber having a plurality of or
through the connections 82, ‘i2, 55,
and
i?ces in a wall thereof, a vacuum-controlled
‘moving the pins 28 to ori?ce closing position in
means for intermittently opening and closing said
which their needles 24 will be projected into
ori?ces, means for supplying liquid under pres- '
the ori?ces ‘.25. In this position the needles close
or substantialy close the ori?ces 255. However, 35 sure to said chamber, a valve controlling the
liquid supply to said chamber, means for closing
they remain closed for only a short period be
said valve, and vacuum-controlled means nor
cause the vacuum motors Mil acting through
mally operative to maintain said valve open.
the worm. E25 and worm wheel l-Ei! cause inter
3. Mechanism for pressure discharge of liquid,
mittont reversals of valves 53%, 836, closing valve
comprising a chamber having a plurality of ori
I 34 after each pressure charge has been deliv
ered to cylinder
53 and simultaneously
?oes in a wall thereof, a vacuum conduit, vacuum
opening valve E35 for exhaust of the pressure
controlled means including a connection to said
vacuum conduit for intermittently opening and
charge from the chamber, aided by the spring
urged return of piston 5%. Hence, so long as
closing said ori?ces, means for supplying liquid
there is suction
partial vacuum in line tilt per 45 under pressure to said chamber, a valve control
mitting lifting of plunger 5 iii the vacuum cylin
ling the liquid supply to said chamber, means for
der I538 to hold shut-off valves $58, 92 open, there
closing said valve, and means subjected to the
will be intermttent flow through the ori?ces 2%,
partial vacuum in said vacuum conduit and re
the intermittency of which. conserves liquid and
sponsive to atmospheric pressure thereon for
50
permits selection of the duration or" the on and
opening said valve and maintaining it open so
long as a partial vacuum of predetermined char
off periods.
If the system is to be associated with'a motor
acter prevails in said vacuum conduit.
truck or the like having pneumatic brakes and
4. Mechanism for pressure discharge of liquid,
the usual. pressure tank for operating the brakes
comprising a chamber having a plurality of or
is used as the pressure tank 953 of Fig. 6, pro 55 i?ces in a wall thereof, pressure responsive means
vision must be made ensuring that the system
for opening and closing said ori?ces, a pressure
shall not be permitted
reduce the air pressure
conduit connected to said pressure responsive
in tank 91! below what is requisite for effectively
means, means for maintaining a predetermined
operating the pneumatic brakes. I ‘provide this
gaseous pressure in the pressure conduit, a valve
assurance by means of a self-closing cut-oil’ valve 60 in the pressure conduit controlling said pressure
I38 in the vacuum line Hit. with conduit con
responsive means, a vacuum conduit, means re
nection his to the pressure line
Assuming
sponsive to the partial vacuum in said vacuum
that sixty pounds pressure is required for oper-_
conduit and operative to open and close said valve
ation of the brakes, valve 538 may be set to re~
in the pressure conduit intermittently whereby to
quire a pressure of sixty-?ve or seventy pounds 65 produce intermittent operation of said pressure
to open it so that it will be held open whenever
responsive means, and means for supplying liquid
the pressure in tank Gil is up to or above the
under pressure to said chamber.
opening requirement of the valve. If the pres
5. Mechanism for pressure discharge of liquid,
sure in tank 90 for any reason should drop below
comprising a chamber having a plurality of or
the sixty-?ve or seventy pounds setting of valve
i?ces in a wall thereof, pressure responsive means
138, the valve automatically will close and stop
for opening and closing said ori?ces, ‘a pressure
the system until the pressure has been restored.
conduit connected to said ‘pressure responsive
In use of the invention for lubricating the
means, means for maintaining a predetermined
treads of vehicle tires, a nozzle box iii may be
suitably mounted for its ori?ces 2t to deliver 75 gaseouspressureinthe pressure conduit, a valve in
7
2,406,659
the pressure conduit controlling said pressure re
sponsive means, a vacuum conduit, means respon
sive to the partial vacuum in said vacuum conduit
and operative to open and close said valve in the
pressure conduit intermittently whereby to pro
duce intermittent operation of said pressure re
sponsive means, a valve in the vacuum conduit
held open by pressure in the pressure conduit and
8
said vacuum conduit is of a predetermined char
acter, and means for closing said valve.
7. Mechanism for pressure discharge of liquid,
comprising a liquid supply conduit, an air pres
sure supply conduit, a vacuum conduit, a valve
for each said conduit, means for closing each of
said valves, means for applying the pressure in
the air pressure supply conduit to the valve in the
adapted to close when the pressure in the latter
vacuum conduit to maintain said valve open so
conduit drops below a predetermined amount, 10' long as the pressure is of predetermined magni
and means for supplying liquid under pressure
tude, means for opening the said valves in the
to said chamber.
liquid supply conduit and the air pressure supply
6. Mechanism for pressure discharge of liquid,
conduit by the partial vacuum in said vacuum
comprising a chamber having a plurality of ori
conduit whereby atmospheric pressure on said
?ces in a wall thereof, means for supplying liquid 15 opening means maintains the said valves open
under pressure to said chamber, a vacuum con
duit, pins movable into and out of said ori?ces,
means responsive to partial vacuum in said vacu
um conduit for intermittently moving said pins
so long as the partial vacuum in said vacuum
conduit is of predetermined character, and means
for delivering intermittent streams of liquid in
response to the conjoint action of partial vacuum
into and out of said ori?ces, a valve controlling 20 in said vacuum conduit and pressure in said air
the liquid supply to said chamber and adapted to
pressure supply conduit.
be maintained open when the partial vacuum in
MALCOLM B. BOYCE.
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