US1773593A - Device for controlling the delivery of compressed air - Google Patents

Description

Aug, 19, 1930. T. McLAUGHLlN ET AL DEVICE FOR CONTROLLING THE DELIVERY OF COMPRESSED AIR 2 Sheets$heet 1 Filed Sept. 16, 1929 ,feri @32 0 KOWWMtkEOu F: :Lfvli I 1::

HQNE rllfi Aug. 19, 1930. I Mc H f ET AL DEVICE FOR CONTROLLING THE DELIVERY OF COMPRESSED AIR Fil ed Sept. 15, 1929 2 Sheets-Sheet 2 6 a w 4 9 w 2 E, 2 v

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INVENTORJ/ (221%! fan Tilamasflfza y/w R J5 3 Patented Aug. 19, 1930 THOMASMcLAUGHLIN, or JOPLIN, AND PERRY :r. STONE, or cHirwooD, MISSOURI, As

i CE SIGN OBS F TWENTY-SIX AND TWQ-THIBDS PER CENT TO 0. H. GENTRY, SR. I

nnvrcr: FOR CONTROLLING THE DELIVERY or COMPRESSED AIR 7 Application filed September 16, 1929. Serial No. 393,009.

This invention relates to a controlling device for the application of compressed air for driving purposes, and has for its object to provide, in a manner as hereinafter set forth,

a device of the class referred to for regulating and equalizing the air pressure to be delivered for drivingair operated devices or machines. 7

A further object of the invention is to provide, in amanner as hereinafter set forth, a device of the class referred to including auto-,

vide, in a manner as hereinafter set forth, a

a device of the class referred to including a palr of compressed a1r receivers each having operating therein a compressed air,fluid operated dispellin element, and with the device further inclu ingmeans to provide for the alternate operation of said elements for alternately expelling the air from the receivers for thepurpose of driving air operated devices or machines. 1

Further objects of the invention are to pro vide, in a manner as hereinafter set forth, a device of the class referred to which is comparatively simple in its construction and arrangement, strong, durable, thoroughly eflicient in its use, readily assembled and. comparatively inexpensive to set up.

With the foregoing and other objects in view the invention consists of the novel construction, combination and arrangement of parts as hereinafter more specifically de scribed, and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modificationscan be resorted to which fall within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views Figure l is a top plan, partly in section of a controlling device in accordance with this invention and for the purpose set forth.

Figure 2 is a section on line 22, Figure 1.

Figure 3 isa sectional plan of the controlling valve mechanism.

Figure Us a section on line 4-4:, Figure 1.

The device includes a pair of compressed air receivers arrangedin parallel spaced relation 1 and generally indicated at 1, 2,' and a pair of liquid containers arranged in parallel spaced relation and referred to generally at 3, 4. The receivers and containers are of cylindri- Vcal form and the container 3 is arranged in lengthwise alignment with respect to the receiver l'andspaced therefrom; T The container 4 is arranged in lengthwise alignment with respect to the container 2 and spaced therefrom. The arrangement of the receivers With respect to the containers is that the inner ends of the receivers oppose in spaced relation the inner ends of the containers.

The device further includes an air compressor 7 and a motor or engine 7 for driva rotatable shaft 10 operated thereby. The

discharge pipes 8, 9 are arranged between the receivers 1, 2 whereas the shaft 10 is positioned over a liquid reservoir 5 which is arranged in alignment with the combined compressing means and engine 7 and further positioned in parallel spaced relation with respect to the containers 3, 4..

Operating in the receiver 1 and container 3 is a piston rod 11 provided at one end with a piston head 12 and at its other end with a piston head 13. The head 12 operates in the receiver 1 and-the head 13 in the container 3. Suitable packing-means, as indicated at 14 is provided at the inner ends of the receiver and container 1, 3 respectively- The packing means is employed for the piston rod 11.

Operating in the receiver 2 and container 4 is a piston rod 15 provided at one end with a piston head 16 and at its other end with a piston'head 17. The head 16 operates in the receiver 1 and the head 17 in the container 4.

A suitable packing means, for the piston rod 15 is provided at the inner ends of the re- -posed axially of the outer ends of the re ceiversl, 2. The openings21, 23 are posit'ioned in close proximity to the innersides of the receivers 1, 2.

Arranged adjacent the outer ends of the receivers 1, 2 as well asarranged in spaced relation ;with respect thereto is a tank 24 for the storage of surplus air to be used in starting. The air is supplied to tank 24 from the ireceivers 1,21and also from the delivery pipe to be presently referred to. Leadingfrom the vreceiver '1 to the tank 24 is a compressed air conducting pipe 25 provided with a cutoff 26 for-closing tank 24 to receiver 1 during the operation of the device. The pipe 25 is secured in the opening 20. Leading from the receiver 2-to the tank 24 is a compressed air conductin i e 27 rovided with a cuta P P P off 28 for closing tank 24to receiver 2 during theoperation of the device. The pipe 27 isiconnectedin the opening 22.

The device further includes a controlling -1 valve mechanism referred to generally at 29 and leading therefrom from the receiver 1 pie a-combined intake and discharge pipe 30 Leadlng from the rep for compressed air.

ceiver 2 to the controlling valve mechanism 29 is a combined compressed air intake and discharge pipe 31. The discharge pipe 8 from the compressor opens into the control- "ling valve mechanism :29. The compressed air dlscharge pipe from the compressor.

opens into the controlling valve mechanism 29. Y o

Opening into the outer end of the con .tainer 3 is a pipe 32 which leads from a pump 33 and the latter acts to create pressure on the :oil within the container 3.

xOpening into. the outer end of the container 4 is a pipe 34 which leads from a pump 35 and the latter acts to create pressure on the oil within the container 4. 'Extending ttromthe reservoir 5 to the container 3 is a pipe 36-for supplying Oll from the reservoir 5 to the container '3, and said pipe 36 also acts as a means for conducting oil from the container 3 to the reservoir 5. Opening into "the container 4, at the-outer end thereof is ;a pipe37 which leads from the reservoir 5. The pipe 37 functions to supply oil to the co1rtainer4and to .conduct the oil, from the container 4 to the reservoir 5.

Intenposedin pipe 36 is a valve 38 having its stem formed with a'eranknrm 39. Interposed in the pipe37 is a valve 40 having its stem provided with a crank arm 41.

The piston rods for the pumps 33, 34 project therefrom as at 42, 43 respectively, and which are alternately operated by an eccentric 44 carried by the shaft 10.

The controlling valve mechanism 29 ineludes an operating, lever 45 therefor and which is fixed at its center to the stem 46 of the valvular element or the mechanism 29. Connected to one end of the lever 45 is one end of a piston rod 47 and connected to the other end of the lever 45 is one end of a piston rod 48. Fixed to the rod 47 is the angleshaped end 49 of an operating'rod 50 for the crank arm 39. Fixed to the piston rod 48 is an angle-shaped end'51 of an operating rod '52 for the crank arm 41.

The piston rods 47, 48 carry piston heads 53, 54 respectively, which operate in fluid containing cylinders 55, 56 respectively, co1nmunicating with the reservoir 5 as at 57, 58

respectively. Leading from the receivers 3, 4 to.the cylinders 55, 56 are pipes 59, 60 respectively, for establishing communication be- ;tween the containers 3, 4' and the cylinders The controlling valve mechanism 29 includes a housing6l provided with openings 62,63, 64 and 65. The housing 61 provides a chamber 66 for the valvular element 67 of the mechanism. Theelement 67 is formed with a pair of diametrically extending ports 68, 69 wlrich intersecteach other at the center, as at 70. The element 67 is furthermore formed with a pair of peripheral pockets 71, 72. The

housing 61 is furthermore provided with a T pair of openings 73, 74. Theport 68 is enlarged at oneend as at 75 and the port 69 is enlarged .at one end as at 76.

Secured in the openings 62, 64 of the housing 61 are the compressed airdischarge pipes 8, 9,; respectively which lead from the compressor. Secured in the openings 63, are the pipes30, 31 respectively which lead from the receivers l, .2.

i The delivery pipefor compressed air is ini 1 dicated at 77 and has a yoke-shapcd end 7 8 and with the arms of the latter indicated at 79, 80 which are secured in the openings 73, 74 respectively.

The. controllin valve mechanism-is so arranged that when the valvular element is shifted in a clock-wise direction the pipe 30 and arm will open into the pocket 71 and the pipe 31 will be closed to the pocket 72.

When element 67 is shifted in an anti-clocklw'ise direction the pipe 31 and arm 69 will register with pocket '4' 2 and the pipe 30 will be closed to pocket 71. When element 67 is shifted in a clockwise direction the pipe 31 will communicate with ports 68, 69 and port- S 68, 69 will communicate with pipes 8, 9.

When the element 67 is shifted in an anticlockiwise direction the ports 68, '69 will register with pipe 30 .and ports 68, 69 will also 7 register with pipes .8, 9.

The pipe 77 .isprovided with a valve controlled branch 81' for supplying surplus air from pipe 7 7 to tank 24.. The valve in branch 81 when closed shuts-E. tank 24 to pipe 77.

The valve in the branch 81 is closed during the operation of the device. A pipe nipple or branch 82 is common to the pipes 32, 3-7 and said nipple or branch merges. into pipes 32,

I 37, andopens into-the reservoir or tank5.

and 17 towards the inner ends of the receivers and outer ends of the containers. When compressed air is belng supplied to the receiver 1 it is being discharged from the receiver 2.'

. The discharge of compressed air-from the receiver 2 is had by the fluid operating on the piston 17. The oil or fluidonly operates against the pistons" 13, 17 for shifting them. to the inner ends of the containers, which in turn will shift thepistons 12, 16 to the outer ends of the receivers. The air from the compressor 7 is supplied to the receiver 1 through,

pipe 9 and port 68 when the latter registers with p1pef30 and the air is discharged from receiver 1 through pipe 30 when the latter registers with pocket 71. During the foregoing operation the pipe 25 is closed by valve,

26. The air from the compressor 7 is sup plied to the receiver 2 through pipe 8 and,

port 69 when the latter registers with pipe 31 and the air is discharged from receiver 2 through pipe 31 when the latter registers with pocket 7 2. During the operation stated with respect to the receiver 2 the valve 28 is closed.' Dunn the o eration stated with res ect to the receivers 1 and 2 the valve in the pipe 31 is closed.

compressed air therefrom forthe purpose of supplying compressed air to operate a machine or other device, the piston 16 is being moved towards the inner end of the receiver 2 whereby piston 17 moves towards the inner end of container 4 at which time piston 54 will be moved towards the outer end of cylinder 56 carrying the piston rod 48 therewith and shifting the valve 40 to open position so that] the oil from the receiver 4 can be forced into the reservoir or tank 5 by the action of piston 17.

eration of the pump 33. The eccentric 44 will operate the pump 33 when piston '12 moves towards the outer end of the receiver 1 and operates pump 34 when piston 16 moves towards the outer end of receiver 2. The op-' I eration of the pump 34 Wlll not be had during the shift of the piston 16 towards the inner end of the receiver 2, nor will the pump 33:

be operated on the shift of piston 12 towards the inner end of receiver 1.

-When piston 16' shifts towards the inner end of-the receiver 2-piston17-is carried towards the outer end of'the container. 4 and forces the oil or fluid to the reservoir. When piston 12 is operated to discharge airgfrom the receiver 1 piston 53 will be moved to the position shown in Figure 1, under such conditions closing the valve .39 and arresting any further supply of liquid or oil into the container 3. The pump 33 operating on the liquid willprovide for the forcing of pistons 13 and 12 in a manner wherebythe former will be shifted towards the inner end of the container 3 and the latter will be shifted towards the outer end of receiver 4. The pistons'53, -54 alternately operate to shift the valvular element 67 in a clockwise and an anti-clock wvise direction to provide fora substantially continuous dischargeof the receiver. I s 1 By'this arrangement when receiver 2 is taking in air,'receiver 1 is having the air 8X pelled therefrom and when receiver 1 is takcompressed air from .ing'in 1air,'receiver 2 is having the air expelled therefrom. The pistons ,53 and 54 not only function to provide for the shift of the lever arm 45 but also for v alternatelyoperating the rods 50, 5 2 in opposite directions-and alternately openand close the valves 39, 40.

The tank 24 is provided witha pressure release valve 82. The valves 26 and 28 are check valves, The-pipes 36 and, 81 may be termed power lines for transmitting compressed air to the motor or other device to be operatedby compressed air supplied through themedium of the controlling valve mechanism 29, the compressor andreceivers 1, 2 .in'connection with the containers 3, 4 and l/Vhen piston 12 is being moved towards" the outer end of the receiver 1 to discharge,

theother elements of the apparatus.

The construction and arrangement ofthe fllQVlCG provides for the regulatmgand equalmatically controlled for alternately deliver ing the application of compressed air for [driving purposes from tworeceivers and by arrangement the delivery is not intermittent but continuous, therefore, 1t 1s lin'gdevicefor thepurpose set forth and .in accordance with this invention can bereadily understood, and .7 although the preferred embodiment ofthe invention isas illustrated and described, yet itisto be understood that changes inthe details of'construction can be had which fall within the scope of the in vention as claimed. 2

1. In acontrolling'device for the purpose set forth, the combination ofjapair of compressed air receiver's, an air expelling ele ment operating in each receiver, fluid pressure operated means for alternately operatelements to alterna tel y' expel the ,tliought the many advantages of a controlcompressed air from said receivers, fluid pressure operated means common to said receivers to alternately control the intake of compressed air to one and the discharge of compressed air from the other, said, controlling means provided with a common outlet for compressed air expelled from the receivers.

2. In a controlling device for the purpose set forth, the combination of a pair of compressed air receivers, an air expelling element operating in each receiver, a pair of fluid containers, a fluid operated element operating in each container and connected to an air expellingelement, flui dcontrolled pressure applying means providing forthe alternate operation of the said fluid operated elements therebyalternately operating the air expelling elements to alternately expel the compressed air from said receivers, and fluid operated means common to said receivers for alternately controlling the intake of compressed air to one and the discharge of compressed air from the other and provided with a common outlet for the compressed air expelled from the receivers.

3. In a controlling device for the purpose "set forth, the combination of a pair of compressed air receivers, a pneumatically and hydraulically operated expelling element operating in each receiver, means for alternately operating said elements pneumatically and hydraulically to alternately expel comvide for the alternate intake and discharge of compressed air to and from each receiver.

4. In a controlling device for the purpose set forth, the combination of a pair of compressed air receivers, a pair of liquid containers, an expelling element operating in each receiver,'a hydraulically operated element operating in each container and connected to an expelling element, means for alternately controllingthe operation of said hydraulically operated elements, a controlling valve mechanism common to said receivers for alternatelycontrolling the intake of compressed air from one and the discharge of compressed air from the other whereby on theintake of the-compressed air to 'a receiver theexpel'ling element therein will-be shifted in a non-expelling direction and carrying,

the hydraulically operated 'elementtherewith, and hydraulic means for alternately operating said controlling valve mechanism, andmean's 'c'oacting with said controlling meansto provide a common outlet for the compressed air expelled from said receivers.

5. In a controlling device for the purpose set forth, the combination of apair of compressed air receivers, an air expelling element operating in each receiver, a liquid pressure operated means for alternately operating said elements to alternately expel the compressed air vfrom said receivers, a controlling valve mechanism common to said receivers to alternately control the intake of compressed air to one and the discharge of compressed air from the other, and hydraulically operated means for controlling the operation of said mechanism to provide for alternately controlling the intake of compressed air to one and the discharge of compressed air from the other receiver, and means coacting with said controlling valve mechanism to provide a common outlet for the compressed air expelled from said receivers.

In testimony whereof, we afiix our signatures hereto.

THOMAS MCLAUGHLIN. PERRY J. STONE.

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