US347173A - goyne - Google Patents

Description

(No Model.) f2 Shets-Sheet'l.

C. A. GOYNE.

VALVE OPERATING DEVICE. l

No. 347,173. I 6.

(No Model.) 2 sheets--sheet 2. ,G A. GOYNB.

VALVE OPERATING DEVICE..

No. 347,173. Patented Aug. 10, 1886.

Fris

EEICE.

CHARLES A. GOYNE, OF ASHLAND, PENNSYLVANIA, ASSIGNOR TO IIIMSELF,

THOMAS E. eoYNE, FRANCIS ,OE SAME PLAGE. n

H.Y coYNE, AND ARTHUR H. eoYNE, ALL

VALVE-OPERATING DEVICE.

SPECIFICATION forming part of Letters Patent No. 347,173, dated August 10, 1886.

To azZZ whom it may concern:

Be it known that I, CHARLES A. GOYNE, a citizen of the United States, residing in Ashland, Schuylkill county, Pennsylvania, have invented certain Improvements in Valve-Operating Devices for Steam-Pumps, of which the following is a specification.

lThe object of my invention is to so construct the Valve-operating mechanism of a ro steampumpas to insure the smooth and easy movement of the valve and preventthe thumping and jarring due to the sudden starting of the piston at either end of the stroke. This object I attain in the manner which I will now proceed to describe, reference being had to the accompanying drawings, in which- Figure lis a longitudinal section of suliicient of a steam-pump to illustrate my invention; Fig. 2, a transverse section of the same 2o on the line l 2; Fig. 3, a plan view of the main and supplementary valve chests with the cover-plate of the said supplementary-valve chest removed; and Fig. 4, a transverse section on the line 3 4, Fig. 3.

A represents the steam-cylnder ofthe p ump, and B the piston, the rod B of which is connected to the plunger Dof the pump in the usual manner, thecylindcr having the ordinary Steam-induction ports, x, communicating 3o with its opposite ends, and-a central eduction or exhaust port,y, and having the usual D- valve, E, operating in conjunction with these induction and eduction ports in the ordinary manner, so as to direct the steam to and per-l 3 5 mit it to escape from the ends of the cylinder alternately.

At each end of the central chamber, a, in which the valve E works, the valve-chest F has two cylindrical bores, b and d, of differ- .aro ent diameters, and to these bores are adapted pistons f and g, secured to or forming part of sleeves which are connected to the main-valve stem G, the pistons f being adapted to the inner or smaller bores, b, and the pistons g to the larger or outerbores, d, of the valve-chest.

Above the main-valve chest F is a Supplementary-valve chest, H, in which is a slidevalve, l, connected to a supplementary-valve rod, J, and Operating in conjunction with induction-ports a and eduction or 4exhaust port y', in the Same .gamer as the main valve E operates in conjunction with the main ports r and y. The induction-ports ar communicate with the spaces between the opposite pistons f andy of the main-valve stem, and one of said induction ports x communicates i through a passage, w, having aregulating-valve, w', with the front end of the valve-chest beyond the front piston g, the other port x communicat- -ing through a similarly-valved port, w, with the rear end of the valve-chest beyond the rear piston y. The valve-rod G has adjustable collars m, for the action of a slide, K, a projecting arm on which is adapted to act upon similar adjustable collars, n, of the supplementary-valve rod J, the slide being reciprocated by the piston-rod B through the medium of a lever, M, hung to a bracket, N, carried by suitable rods, N', one arm of said lever being Slotted for the reception of a pin, p, on the piston-rod, and the other arm ofthe lever being connected by a rod, p', to the slide K.

The operation of the valve is asv follows: Supposing that the piston has reached the limit of its rearward movement, as Shown in Fig. l, the slide K has been moved so as to strike the forward collars, mand n, 'of the valve-rods G and J, the effect of which is to move the main valve E so as to close both of the inductionports a; x, and thus cut olf the steam from both ends of the cylinder. At the same time the supplementary valve I has been moved so as to open the rear induction-port x to the steam and the forward port x to the exhaust. The steam consequently enters the space between the rear pistons f and g, and, owing to the fact that the area ofthe piston g is greater than that of the piston f, the tendency of the steam in the iirst instance is to move the valve E rearward, or in a direction the reverse of its proper movement, such rearward movement being prevented, however, by the contact of the collar m with the slide K. Steam finds its way to the outer face'of the piston g through the contracted opening presented by the regulating-valve w', and as soon as the pressure on the outer face of the piston is greater than the pressure of steam acting on the forward face of the same the piston will be caused to move forward, the movement, however, being a Smooth and easy movement,

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and the first movementof the piston being correspondingly gradual, for it should be understood that it isimpossible for the pistonsf and f/ to move at a greater speed than is warranted by the position of" the rcgulatiilg-valve w', as the slightest accelerated movement reduces the pressure on the outside of the larger piston, while the pressure between the pistons remains constant. This is a leading feature of my invention, as with the various other kinds of' steam-actuated valves with which ll' am familiar Vit requires a greater pressure to start than it does to keep theln moving, the consequence being that when started the valve moves rapidly, opens the imluetion-port to its full area, and starts the piston on its returnstroke with a sudden jarring movement. W'h en the piston reaches the forward limit of its movement, the operations above described are repeated in connection with the forward pistons f and g and the forward induction and regulating ports. ly adjusting the collars m and n on the val ve-rods G and J, the stroke of the piston .l may bc limited to any desired extent.

In the drawings l have shown a passage, s, forming a communication between the supplemcntary-valve chest H and the main-valve chest F, in order to convey steam to said supplementary-wdve chest, another passage, s', forming a communication between the supplementary exhaust-port y and the main exhaust-port y,- but it will be evident that any desired means may be adopted for conveyingY the steam to the supplementary-valve chest and for conveying the exhaust away from the same. Then it is not desired to vary the speed of movement ofthe valve E, the valves lw/in the ports w maybe dispensed with, these ports being of such contracted arca as Compared with the area of the ports a" that the tlow of steam to the outer faces of the pistons f/ will be properly restricted; but the use of theregulati11g-valves is preferred in all cases.

I claim as my inventionl. The combination of' the main valve, opposite pairs of differential pistons connected to said valve, a valvechesthaving differential bores for said pistons, ports or passages whereby a limited piston area is subjected to aconstrant pressure tending to move the valve in the wrong|` direction, and contracted passages through the medium of which a large piston arca is subjected to pressure tending to move the valve in the right direction, all substalr tially as specified.

2. The combination of' the main Valve, opposite pairs of differential pistons connected to said valve, a valve-chest having differential bores for said pistons, ports through which steam may be admitted to or exhausted from the spaces between said differential pistons, a

lsupplementary valve controlling said ports,

and contracted passages through which steam can gain access to the outer faces ofthe larger pistons, all substantially as specified.

3. The combination of the main valve of a steam engine or pump, opposite pairs of dif'- ferential pistons connected to said valve, a valve-chest having differential bores for said pistons, ports through which steam may be admit-ted to or exhausted from the spaces bctween said differential pistons, a supplementary valve controlling said ports, passages through which steam can pass to the outer faces' of the larger pistons, and adjustable valves whereby the area of said passages can be controlled, all substantially as specified.

-f. The combination of the cylinder, its piston-rod, the main and supjilementary valves and their actuating-rods, having adjustable collars, the slide f'or acting on said collars, and a lever, one arm of which is connected to said slide, the other arm being slotted for connection tothe piston-rod or one of' its attachments, all substantially as specified.

ln testimony whereofl` have signed my naine to this specification in the presence of two subscribing witnesses.

CIIAS. A. GOYNE.

\Vi tnesses:

Wn. fnnrow, liusnmns Marian.

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