US842406A - Water-motor. - Google Patents

Description

PATENTED JAN.. 29

L. c. LEWIS. WATER MOTOR.

APPLICATION FILED 0OT.6. 1905.

2 SHEETS-SHEET 1.

' lNVENTOR [6mm 6- Lew ATTORNEYS PATENTED JAN. 29, 1907. L. G. LEWIS WATER MOTOR.

APPLIOATION FILED 0016. 1905.

' 2 sums-sum z.

ATTORNEYS win 'INVENTOR Lao/365911113 I llllli Improvements in Water-Motors, of which the 3 produce a motor which will be stron 3.

rinirnn STATES PATENT .Ionnron.

Lnwrs'o. LEWIS, or COLUMBUS, OHIO, ASSIGNOR T O T'HE MONARCH MANU- FAOTURlNG OOMPANY, or COLUMBUS, OHIO, h CORPORATION or OHIO.

WATER-MOTOR.

To all, uih'oml it may concern.

Be it known that I, LEw'IsO. Lnwis, a ci-tizen of the United States, residing at Columbus, in the county'of Franklin and State of .Ohio, have invented certain-new and useful following is a specification.

My invention relates .to new and useful 1 'p provementsin water-motors.

The object of the invention is to produce -a simple motor of superior construction in which a comparatively few number of parts are employed, thus reducin the wear and lengthening the intervals w en repairs be come necessary, g

It is also an ob'ect to so construct and arran e the parts t at access thereto may be easiyand readily had. 5

-Still another 'featureresides in the provision fluid without the use of auxihary valves or tappets.

Among. other objects is. the provision whereby a steady-and continuous movement l of the iston-head is had and the liability of -.-poun5ing reduced to a' minimum.

Finally the object of theinvention is to ,durable, and'efiicient and one in which t eseveral parts will not be liable to get, out of working order.

' With the-above and other objects in view the invention consists of the novel details of construction and operation, a preferable em-v bodiment of which is' described in-the specification and illustrated in the accompanying z drawings, wherein Figure 1 is a longitudinal sectional view of '40 the motor, thepiston tr ke a d the-mainvalve shifted. Fig. 2. is opposite being at, one endof'its a like view with the pliston atthe' end of its stroke and t e valve shifte 111113116 opposite direction. Fig.3isia partial longi tudinall sectional view showing the pistonhead near the end .of'its stroke, the spring ;compre'ssed and about tocornplete the shift- ,ing of the valve, also showing the exhaust- Yports'open to relieve the pressure. F1 his a ransverse' sectional viewtaken on the me a a (if-Fig, l lookin'g-in the direction'of the arrow, .Ei'g. the t e of Fig. 1, and Fig. 6 is a trans? Specification of Letters Patent;

of a main valve which is shifted by the action of the piston-head and 'the pressure of the 5 is atransverse sectional view taken on Patented Jan. 29, 1907.

6,1905. Serial No- 281579.

Fig}: looking in the direction of the arrow.

' the drawings the numeral 1' designates the main or piston cylinder of the motor, which is provided at its ends with heads 2 and 3. A suitably-constructedpiston-head 4 is arranged'in the cylinder and is carried on the iston-rod 5, having. a solid portion 6 and a hollow portion 7, the solid portion terminating short of the piston-head and passing through the cylinder-head 2, so as to be connected with the pump or other device which it is desired to operate. The hollow portion 7 of the piston extends through, the piston-head 4 and is provided with a plurality of ports 8, which communicate with the cylinder 1 between the piston-head and the" cylinder-head 2. The cylinder-head 3 is providedwith an'outwardlydirected an ular boss 9, preferably four= sided. A cydi'ndrical valve-sleeve 14, having a diameter less than that of the boss 9, is extended therefrom. The valve-sleeve is prothreaded flange 13, having an annular boss or shoulder portion 15, corresponding to the boss 9.

Two packing-strips 12 are supported at each end-on the bosses-9 and 15 and receive plates 11, which aresuit'ably secured in lace. ide' plate 18 are 'formed integral wit .the valve-sleeve-IM and the bosses 9 and 15, so that interspaces are provided between the plates 11 and the valve-sleeve. One of the plates 1 1 is provided with a nipple 16, through which the fluid under pressure is supplied, while the plate opposite is provided with a nipple 1 7, through which the exhaust is conplates,

between the valve-sleeve and.the packing 12 versesectional view taken on the line y y of ducted. The interspace between one of the vided at its outer end with an annular screwchamber 21.: Transverse ribs 22-, extending ports being located between the ribs.

haust fluid passing into the chamber 21 must first pass through one of the ports ,24 into the valve-sleeve and out through the port 23 before -passing through the exhaust-nipple 17.

An internally-screw-threaded collar 25 is engaged about the annular screw-threaded flange 13 and is provided with an inwardlyextending annular screw-threaded flange 26, into which the end of an extension-sleeve 27 is screwed. The extension-sleeve 2 7'has a diameter slighter larger than that of the valvesleeve 14 and is closed at its outer end by a screw-threaded cap 28. The hollow portion 7 of the piston-rod extends through the valve sleeve 14 and well into-the casing 27, carrying onits end a threaded washer 29. One or more inclined orts 30 extend through the flange 13 and boss 15, establishing communication between the interior of thesleeve 27 and the exhaustpassa e 21, while one or more ports 31 extend t *ough the c linderhead 3 and the angular boss 9, esta .lishing communication between the opposite end-of,

the exhaust-chamberZl and the cylinder 1.

Within the valve-sleeve 14- I arrange a doubleheaded slide-valve 32. The valve 32 comprises a central tubular portion 33, provided at each end-with internally-threaded flanged portions and fitting snugl about'the hollow portion 7 of the piston-r0 '5. About each of-the flanged portions of the tubular member 33 oppositely-directed annular cupleathers 34 are arranged, the said leathers,

having their peripheries fitting snugly Within the sleeve 14. The leathers are held in place by flanged thimbles 35, each of which sup ports an annular cup-leather 36, similar to tl'ie cup-leather 34 and directed toward the same. The last-named cup-leathers are securely held in place on the'thimbles-by'rings 37, threaded on the extreme ends ofthe thimbles, and thus-the valve. The cup-leathers at each end of the valve are separated so that the valve may be positioned to cause them to stand on each side-of one of the sets of ports 20 of the supply-chamber 19, but when so 0- sitioned acting to confinethe fluid there etween and prevent the same frompassi into the bore of thesleeve. In-the outeren of the sleeve 14 and withinthe flange 13a guard-ring 38 is threaded, said ring"being provided to prevent-the valve from being moved out of the sleevewhen shifted, as hereinafter described. About the "pistonrod and at each end of the valve I loosely mountsuitable coiled springs 39,the said springs being only of suflicient length to shift the valve when compressed.

I wil 'scription of the operation of my pump.

Referring to Fig. 2, the piston-head 4 is shown at the'end of its outer stroke and about to commence its inward stroke and the valve 32 having been shifted. Fluid. intro duced through the ni ple 16 fills the chamber 19 and passes t the right ban of the chamber is confined between the leathers 34 and 36 of the valveough the ports 20. That portion (passing through the ports 20 at 1 head at the right hand, as clearly shown in Fig. 2, while the remainder of the fluid is free.

to pass through the ports 20 at the left-hand end of the sleeve into the bore of the sleeve 14 and through the ring. 38 into the sleeve extension 27. Fluid introduced into the sleeve extension 27 under pressure enters the hollow portion 7 of the piston-rod 5 and passes therethrough t0 the ports 8, out through which it passes into-thecylinder 1 behind the piston-head 4, thus .acting to .drive the same inward and cause the inward stroke of the piston-head. With the valve in this position and still referring to Fig. 2 the ports 24 at the left-hand end of the sleeve 14 .are

closed by the cup-leather 34, while the ex haust-ports 24 at the other end are uncovered and opened, so that the exhaust fluid in the cylinder 1 is free to ass throughthe ports-31 into the exhaust-c amber 21 at the ,righthandend. From this point it is free to pass IOC through the uncovered ports 24 into the.

valve-sleeve 14 and out through the ports 23 to the exhaust-nipple 17. As the fluid issu plied and the piston-head driven inward t e valve remains in the same positionuntil the piston-head 4 nears the end of its stroke. As thejs aid piston-head approaches the end of its "inward stroke it encounters the coiled spring 39, mounted von the pistonrod and bearing )against the right-hand end of the valve. ton head continues to move, and as :the spring-is compressed the valve 32 is moved or s ifted to the left until it reaches the position Shown in Fig. 3. B observing Fig. 3 it will be seen that the va ve is so positioned'that the supply or inlet orts 20;at each end of the .valveleeve are c osed by the cup-Qleathers 36, while the exhaust-ports 24.-at each end lieve. on both sidesof the valve. 1 Itis also .ressure "being Jrelieved'by the opening of g'othitheexhaust-ports, the spring 39, which 'has been compressed, is free to expand,

The spring is compressed as the pisrro .120 are 0 en, so that pressure of the fluid islre- 1 fined between the leathers of-the valve at that end, while the fluid under pressure, passing through the ports at the right, en-

- ters through the openin'glO of the head 3 into the cylinder 1 against the piston-head 4, thus forcing the same outward: The exhaust-ports 24 at the ri ht-hand end of the sleeve are closed bythe leather 345, while the opposite orts 24 are open. fluid in t e cylinder 1 as the piston-head moves outward passes through theports 8 into the hollow portion 7 of the piston-rod 5. Passing through the said hollow portion the exhaust fluid enters the sleeve extension 27, from which it passes, by way of the ports 30 chamber 21, ports 24 and 23, to the "exhaustnipple 17 The valve remains in this position, as shown in Fig. 1, until the piston approaches the end of its outward stroke, when the spring 39 at the left hand of the valve is compressed by the washer 29 and the valve shifted in the same manner as before described, so that it is moved to the position shown in Fig. 2. The inward and outward strokes of the iston and the shifting of the valve is carried on in the manner described as the motor continues to operate.

I wish to call attention to the fact that by simply unscrewing and removing the sleeve extension 27 and the guard-ring 38 the slidevalve may be readily exposed to view and by removing the washer 29 the spring 39 and the valve may be entirely removed, for whatever purposes desired, and access to the valve sleeve 14 had. On the other hand, access is readily had to either the supply or exhaust chambers 19 and 21 by simply removing the plates 11 and to the cylinder and" the righthand end of the valve-sleeve by simply disconnecting the cylinder from the head 3. Another point of advantage and novelty to which attention is invited is the fact that only four cup-leathers are employed, which greatly reduccs the intervals between, as well as the cost of repairs, which, it is obvious, are often necessary and depend in proportion to the number of cupployed. g

Having now fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a fluid-motor, a cylinder, a pistonhead working in the cylinder, an extensionsleeve, a hollow pistonrod carrying'the piston-head and arranged to establish communication between the cylinder and the sleeve,

provision for supplying and exhausting fluid The exhaust eathers or packings e mto and from the cylinder and'sleeve, 'andja valve interposed between the cylinder and. sleeve extension having movable engagement with the piston-rod adaptedto control the su ply and exhaust of fluid to and from the cy inder and the-sleeve.

2. A sleeve provided with suitable inlet and exhaust ports and provision for supplyin and exhausting fluid to and from said sleeve, in combination-with a piston and a valve having a plurality of leathers s'nugly fitting within the sleeve, and provision for moving said valve to cause its leathers to alternately cover and uncover the ports in the sleeve and during certain periods to cover both the supply-ports and ,uncover both of the exhaust-ports.

3. In a fluid-motor, a cylinder, a pistonhead working in the cylinder, a valve-casing associated with one end of the cylinder, a sleeve extension associated with the valvecasing, a hollow piston-rod carrying the piston-head extending through the valve-casing into the sleeve and arranged to establish communication between the cylinder beyond the piston-head and the sleeve, and a valve having movable engagement with the pistonrod arranged in the valve-casing.

4. In a fluid-motor, the combination with a cylinder, an extension-sleeve, a piston and a piston-rod working in the cylinder and the sleeve and establishing communication therebetween, of a valve-casing provided with. a supply and an exhaust chamber and disposed between the cylinder and the extensionsleeve, the said casing having ports establishingcommunication between the sleeve and one end of the exhaust-chamber ing having supply-ports communicating with the supply-chamber and exhaust-ports communicating'with the exhaust-chamber, anda free sliding valve arranged on the pistonrod in the valve-sleeve and adapted to alternately cover and uncover the ports leading to the supplychamber and the exhaustchamber. v j

' 5. In a water-motor, the combination with a cylinder, of a piston mounted for recipro-, catory motion-in said cylinder, a valve-casing, a'valve sli'dably disposed in said valvecasing an extension-sleeve extending beyond the end of the valve-casing, a hollow pistonrod to which the piston is secured, said piston-rod being arranged to establish commu-' nication between the sleeve extension and the interior of the cylinder beyond the piston,

and the cyl .inder and the opposite end of the exhaustchamber, a valve-sleeve arranged in the casand having a member arranged upon its outer end adapted to shift said valve at'the limit of movement of the piston away from the sleeve extension.

6.. In a device of the character described, the combination with a cylinder, of a piston mounted for reciprocatory movement in said cylinder a valve casing located adjacent said cylinder, a sleeve extending from said valve-casing and closed at its outer end, means for admit-ting fluid under pressure to the valve-casing, means for conducting said fluid from said valve-casing, a hollow pistonrod secured to the piston and extending through the valve-casing and into the sleeve, said piston-rod being adapted to establish communication between said sleeve and the interior of the cylinder beyond the piston, and avalve located in the valve-casing and adapted to be shifted when the piston reaches its limit of movement in either direction.

In testimony whereof I allix my signature in presence of two witnesses.

LEWIS C. LEVIS.

Witnesses:

A. L. PHELPS, M. B. ScHLEY.

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