US986410A - Regulating-valve. - Google Patents

Description

E. c. SHERMAN, 'BBGULATING VALVE. APPLICATION FILED APB-.16. 1909.

Patented M r. 7, 1911.

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B. G. SHERMAN.

' BEGULATING VALVE. APPLIOATION mum 5.23.16, 1909.

Patented Mar. 7, 1911.

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ERWIN C. SHERMAN, 0F YOUNGSTOWN, OHIO, ASSIGNOR TO THE WILLIAM B. POLLOGK COMPANY, OF YOUNGSTOWN, OHIO, A CORPORATION OF OHIO.

REGULATING-VALVE @SOALIO.

Specification of Letters Patent.

Patented Mar. '2, 1911.

Application filed April 16, 1909. Serial No. 490,338.

To all whom it may concern:

Be it known that I, ERWIN C. SHERMAN, of Youngstown, Mahoning county, Ohio, have invented a new and useful Regulating Valve, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a sectional elevation showing the port on one end of a fluid pressure cylinder having a regulating valve therein con structed and arranged in accordance with my invention; Fig. 2 is a transverse section of the same on the line TIL-II of Fig. 1; Fig. 3 is an inverted plan view showing the valve secured in place in a port of the cylinder; Fig. 45 is a detail sectional view taken on the line IV-IV of Fig. 2; Fig. 5 is a similar section taken on the line V-V of Fig. 2; Fig. 6 is a similar sectional view taken on the line VI-VT of Fig. 2.

My invention relates to the construction of valves and more particularly to regulating valves used in controlling the flow of fluid pressure into and out of fluid pressure cylinders in operating such cylinders.

The object of the invention is to provide a regulating valve of novel construction having means for regulating the volume of the fluid pressure exhaust from the cylinder and at the same time permitting a full supply of fluid pressure to the cylinder when fluid pressure is passing into the cylinder through the valve.

A further object of the invention is to provide a valve having novel means for adjusting the stroke of the valve in its cage and improved means for securing the parts of the valve together by which disengagement of one part from the other is prevented.

In the drawings, 2 represents one end of a fluid pressure cylinder having the usual reciprocating piston 3 mounted therein and having an inlet port 4 which is connected by means of the port extension 5 with the pipe (3 by which one end of the cylinder is connected to a source of fluid pressure and through which it exhausts. Located in the port t is an annular valve cage 7 removably held. in place therein by means of the bolts 8. The central opening 9 of the cage 7 .is provided with a plurality of radial openings 10 which communicate with the port extension 5 on the cylinder as is shown in Figs. 1,

2 and 5. The cage 7 is provided with a valve 11 which is arranged to be reciprocated in the cage, the valve being maintained in its proper location by means of the radial ribs 12 provided for that purpose on a portion of the interior of the cage 7. The valve 11 is adjusted and is held in place in the cage 7 by means of the adjust- 111g screw 13, this screw being screw threaded into the outer end of the cage 7 and the screw 13 is locked in its adjusted position by means of the jam-nut 1a on the outside of the cage. The opposite end of the cylinder 2 is also provided with a like port having a similar regulating valve mounted therein the port extension on the opposite end of the cyl nder being connected by means of a pipe with the operating valve, (not shown) to a source of fluid pressure.

In assembling the parts forming the regu latlng valve, in place in the port 4, the T- head of the adjusting screw 13 is first placed in position in the opening 15 in one end of the valve and is then moved into the square slotted portion of this opening. The square portions of the slot and bolt will prevent rotation of the adjusting screw independently of the valve and the thread will prevent the bolt becoming disconnected from the valve. The jam-nut 14. is then inserted in place in the opening 16 in the cage 7, this opening being provided with the cut-away portion 16 so as to admit the flanged inner end let of the jam-nut when the screw 13 does not extend through this opening. After the nut is put in position in the opening 111 the case 7 the valve 11, with the T head of the adjusting screw 13 in place therein 1s screwed into the threaded portion of the cage 7. To facilitate the turning operation in screwing this adjusting screw in place, the extension 11 on the valve 11 is made square in cross section so as to be engaged by a suitable wrench. After the adjusting screw 13 has been screwed through the threaded portion of the cage 7 and the jam nut 14, the cage, together with the removable valve, the adjusting screw and the am nut, is placed in position in the port 4: and is secured in place therein by the bolts 8. The adjusting screw 13 is then turned so as to set the valve 11 in the desired location i in the cage. The jam-nut 14; is then turned on the screw 13 until it tightly locks this screw in its adjusted position. It will be seen that there is room for the valve to be reciprocated in the cage 7, the T-headed bolt 13 permitting of such movement, and the end of the square portion 11 on the valve, by engagement with the boss 17 in the port l, limiting the movement of the valve in one direction.

In the operation of cylinders equipped with my improved regulating valve, when fluid pressure is admitted through the pipe 6 the pressure will move the valve 11 into its wide-open position, thus admitting fluid freely through the port 1 into the front end of the cylinder 2. The admission of fluid pressure will cause the piston 3 to be moved to the opposite end of the cylinder. \Vhen fluid pressure is then admitted to the opposite end of the cylinder the piston 3 is moved in the opposite direction so as to bring it back into the position shown in the drawings, and the fluid pressure first admitted is exhausted through the port 4 and the valve cage 7. When the fluid pressure supply is cut off from the port 1, the valve 11 will close until it is in engagement with the adjusting screw, in this way reducing the area of the outlet opening through the valve cage. By thus limiting the area of the exhaust outlet opening, the piston is cushioned on its exhaust end and the rate of movement of the piston is varied to any desired extent, this regulation being secured by adjusting the valve so that in its exhaust position it will cause the exhaust to flow at the required rate of speed.

The advantages of my invention will be apparent to those skilled in the art. By means of my improved regulating valve, a slow-moving piston can be obtained with gaseous fluid pressure as well as with hydraulic pressure and the speed at which the piston moves in the cylinder can be varied in any desired degree. The apparatus is simple and is easily kept in repair. The parts forming the valve and its cage are constructed and arranged so as to be securely locked in position after being as sembled, as long as the cage is secured in place in the port opening of the cylinder. In this way, loss of the parts which might be occasioned by the constant jarring to which such apparatus is submitted is avoided.

Variations in the construction and arrangementof the parts may be made without departing from my invention. The valve may be arranged in a horizontal posi tion instead of the vertical position shown, and its location with regard to the end of the cylinder may be changed.

Obviously the valve may be used so as to provide an inlet opening varylng in size [from a full opening to zero, and an exhaust outlet of constant full opening movement, instead of the reverse as shown.

lVhile my improved valve is designed primarily for use on dumping cars embodying a dumping motor operated by fluid pressure, it is not limited to such use and it is expressly understood that it is adaptedfor use with fluid pressure cylinders generally.

I'claim V 1. A regulating device for power cylinders, comprising a valve located in the comanon inlet and exhaust port of the cylinder,

said valve having opposite piston surfaces, one of said surfaces being exposed to the incoming fluid to thereby actuate the valve to move it to aposition to afford a maximum port opening, and the other piston surface being exposed to the exhaust fluid from the cylinder to move the valve to a position to throttle said port, substantially as described.

2. A regulating device for power cylinders, comprising a valve located in the common inlet and exhaust port of the cylinder, said valve having opposite piston surfaces, one of said surfaces being exposed to the incoming fluid to thereby actuate the valve to move it to a position to aflord a maximum port opening, and the other piston surface being exposed to the exhaust fluid from the cylinder to move the valve to a position to throttle said port, together with means for varying the throttling movement and action of said valve, substantially as described.

3. The combination with a power cylinder having a combined outlet and inlet port, of a valve seated in said port and arranged to close said port in one position and to throttle it in another position, said valve having portions exposed respectively to the ingoing and outgoing fluid and free to move from one of its positions to the other and back by the pressure of such fluid, substantially as described. Y

a. The combination with a power cylinder having a combined inlet and outlet port, a valve cage secured in said port and having inlet and exhaust openings, and a valve member seated in the cage and arranged to close said openings in one position and to throttle the passage to the same in another position, said valve having portions exposed respectively to the ingoing and outgoing fluid and free to move from one of its positions to the other and back by the pressure of such fluid, substantially as described.

5. A regulating device for power cylinders, comprising a valve located in the common inlet and exhaust port of the cylinder, said valve having opposite piston surfaces, one of said surfaces being exposed to the i11- coming fluid to thereby actuate the valve to move it to a position to afford a maximum port opening and the other piston surface being exposed to the exhaust fluid from the cylinder to move the valve to a position to throttle said port, together with a guide and means for adjusting the guide to vary the extent of its throttling movement, substantially as described.

6. In a regulating valve, a valve cage having a valve movably mounted therein, an adjusting screw arranged to limit the movement of said valve, means for locking the screw in its adjusted position, and an engagement between the screw locking means and cage arranged to prevent the removal of said locking means; substantially as described.

7. In a regulating valve having a cage and a valve adjustably mounted therein, a valve adjusting screw and a jam nut for locking the screw in its adjusted position, said jam nut having means cooperating with the cage to prevent its removal while the screw extends through said cage and nut; substantlally as described.

8. A regulating valve, comprising a removable valve cage, a valve movably mountmy hand.

ERVVIN C. SHERMAN. lVitnesses:

C. W. MOCLURE, G. VVILsoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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