US527381A - Valve - Google Patents

Description

(NoModel.) V l G. W. VAN TINE.

` VALVE. N0. 527,381. Patnted 00h. 9, 1894.

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UNITED STATES PATENT- OFFICE.

GEORGE W. VAN TINE, OF BAYONNE, NEW JERSEY.

VALVE.

SPECIFICATION forming part of Letters Patent No. 527,381, dated October 9, 1894. Applicationiiled October 25, 1893. Serial No. 489,126. (No model.)

To all whom it may concern:

Be it known that I, GEORGE W. VAN TINE, a citizen of the United States, residing at Bayonne, in the county of Hudson and State of New Jersey, haveinvented certain new and useful Improvements in Valves, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to that class of valves employed for controlling the inlet and outlet of water or other pressure fluid to and from the cylinders of hydraulic and other Huid-operated presses, and it has for its object to provide avalve, for the'purpose stated, which will be perfectly balanced so that the pressure of the fluid will not prevent it from being easily moved in opening and closing the inlets and outlets, and will be of such construction that but a very short movement of the valve piston will be required in opening and closing the valve.

My invention also comprises such a construction and arrangement of parts that the valve may be opened or closed by a horizontal pull or push on the operating lever or levers, such movement being more convenient and easy for the operators than a vertical movement of the operating lever or levers would be.

In the accompanying drawings Figure 1 is a sectional elevation of a valve and appurtenances embodying my invention. Fig. 2 is a detail top view of the valve cylinder. Figs. 3 and 4 are sectional and plan views, respectively, of the valve piston,and Fig. 5 is a detail View of one of the links connecting the operating levers to the arms on the valve cylinder.

A denotes the valve cylinder provided with an inlet port d, communicating with an inlet pipe b leading to the pump, and with an outlet or discharge port a communicating with an outlet pipe h leading to the cylinder of the hydraulic or other press.

Closely fitting withinthe cylinder A is the y piston C provided with an operating stem c and with a discharge pipe or stem c', said stems passing through sleeves or nuts d screwed into the opposite ends of the chamber of the valve cylinder, the ends of the fluid receiving portion of the said chamber being packed by suitable glands or cupleathers d'1.

' VJointed to the upper end of the operating valve stem c are two actuating hand levers E connected by links e with arms or projections a? on the valve cylinder A. The hand levers E are preferably of the inverted L- shaped or right-angular form shown, so that the valve piston may be operated, to open or close the valve, by horizontal movements of their depending portions, such horizontal movements, effected by pulling or pushing', being easier and more convenient for the operator than vertical movements would be. Two of these levers E are preferably provided, a's shown, so that the valve p iston may be conveniently operated from opposite sides of the press, but it will be obvious that one lever would answer the purpose of operating the valve piston.

The valve cylinder A is provided with a passage a3 intowhicli the inlet port aopens, saidpassage communicating with the chamber of the valve cylinder both above and below or at the opposite ends of the piston C so that the pressure of the inlowing fluid will be equal at both ends of the'said piston, thus evenly balancing the same; and to retain this even pressure when the said piston is being moved to open or close the valve said piston is preferably provided with one or more vertical or longitudinal passages c2 extending through it. The piston O is also provided with transverse inlet and discharge passages or ports cS and c4, respectively, the port c3 communicating with vertical or longitudinal inlet passages or ports c5, and the port c4 opening into the vertical or longitudinal discharge passage c6 extending through the lower valve stem c'.

F denotes a receptacle into which the water from the hydraulic press is discharged and from which` it is conveyed away by a waste pipe f, said receptacle being intended to be and its appurtenances, in the form of my invention herein shown, being supported on said receptacle.

From the foregoing it will be apparent that the valve piston C will always be evenly balanced by an equal pressure at the opposite mounted on the top of the press and the valve IOO 5 ton the even Ybalance thereof is maintained while it is being moved, 'in opening or closing the valve, as Well asfvvhen it isstationary. It will also be clear that owing to the close proximity to each other of the transverse into let and discharge passages or ports c3 and c4 only a very slight movement of the valve piston will be required in opening or closing the valve, this movement of said piston being conveniently and easily effected by horizontal movements of the lower ends of the operating lever or levers E.

Having thus described my invention, I claim and desire to secure by Letters Patentl. A valve, for hydraulic presses and the zo like, consisting of a valve cylinder, as A, provided with inlet and outlet ports, and a piston fitted to slide in the chamber of said cylinder and having transverse inlet and outlet passages, one or more longitudinalinlet pas- 2 5 sages communicating with the said transverse inlet passage, and a longitudinal outlet passage communicating with said transverse outlet passage, the wall of the said valve cylinder being provided with a passage communicating with the chamber of said cylinder, at

the opposite ends-of the said piston, and with the said inlet port, combined with means for operating said piston.

2. A valve, for hydraulic presses and the 3 5 like, consisting of a'valve cylinder, as A, provided with inlet and outlet ports, and a piston iitted to slide in the chamber of said cylinder and having transverse inlet and outlet passages, one or more longitudinal inlet pas- 4o sages communicating with the said transverse inlet passage, one or more longitudinal passages extending entirely through said piston, and a longitudinal outlet passage communicating with said transverse outlet passage, the

wall of the said valve cylinder being provided with a passage communicating with the chamber of said cylinder, at the opposite ends of the said piston, and with thesaid inlet port, combined with means for operating said piston. Y

3. The combination with the valve cylinder A provided with the arms or projections ai, and with inlet and outlet p'orts, of the piston C tted to slide in the chamber of said cylinder and having transverse inlet and outlet passages, to communicate Lwith the inlet and loutlet ports of said cylinder, and with longitudinal inlet and outlet passages communicating with said transverse inlet and outlet v passages, the operating hand levers'E con,-

nected with the stemof said piston and having depending portions to be grasped by the operator, and the links e connectingthe fulcrums of said levers to the said arms or projections a2.

4:. The combination with the valve cylinder provided with inlet and outlet ports and with a passage communicating with said inlet port and with the opposite ends of the chamber of said cylinder, of apiston fitted to slide in said cylinder and provided with the transverse passages c3 and c4, a longitudinal passage c( communicating with said transverse passage c4 and one or more longitudinal passages c5 communicating with said transverse passage c3, the hand levers E connected to the piston of said valve and having depending portions to be grasped by the operators, and links connecting the fulcrum portions of said levers to stationary supports or projections formed on said valve cylinder.

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

GEORGE W. VAN TINE.

Witn esses HENRY CALVER, J. F. .TAQUITE

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