Патент USA US2406659код для вставки
Aug. 27, 1945. M, B, BOYCE 2,406,659 MECHANISM FOR PRESSURE DISCHARGE OF STREAMS OF LIQUID‘ Filed Oct._ 51, 1944 - 64 62 4 . _ 54 52 £0 62 a4 62 \ 50. 2 Sheets-‘Shea’; 1 Aug. 27, A1946. ' 2,406,659 M. B-BOYCEY MECHANISM FOR PRESSURE DISCHARGE OF STREAMS OF LIQUID Filed 0d. 51, 1944 6' 60 68 87 86 . 2 Sheets-Sheet 2 M l 30 52 35 "H1 Ink mm / /i I38 f INVEN TOR. Mg, 8w’ I . 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) ' r 2 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 3 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. > ~ > a ' 7 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 . 6 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.