US614798A - Controlling-valve - Google Patents

Description

No. 6I4,798. Patented Nov. 22, |898.

G. W. DODGE. coNTRoLLmG VALVE.

lApplcation filed July 8, 1897.)

(No Model.)

`- NTTET) STATES PATENT GEORGE IV. DODGE, OF LIVERMORE FALLS, MAINE, ASSIGNOR TO .FRIOTION PULLEY AND MACHINE WORKS, OF SANDY HILL, NEV YORK.

CONTROLLING-VALVE.

SPECIFICATION forming part of Letters Patent No. 614,798, dated November 22, 1898.

Application filed July 8,1897. Serial No. 643,791. (No model.)

To all whom it may concern:

Be it known that I, GEORGE W. DODGE, of Livermore Falls, county of Androscoggin, State of Maine, have invented an Improvement in Controlling-Valves, of which the following description, in connection with the accompanying drawings, is a specification, like letters and figures on the drawings representing like parts.

This invention has for its object the production of a simple, strong, efficient, and durable balanced valve particularly adapted for use in controlling hydraulic elevators, the

feed-cylinders of pulp-grinders, and for many other purposes.

In the valve to be herein described the valve-seats are so arranged relatively to the valves that the movement of the latter is in a direct line toward and from the seats, obviating the wearing action inevitable in apparatus wherein there is any lateral or rubbing movement, so that my novel valve is durable in the highest degree even under the most exacting conditions.

I have herein shown my invention embodied in a four-way valve, the valve-case having main inlet and exhaust ports and two delivery-ports, the arrangement of the valves and seats being such that communication between the inlet and a delivery port is effected simultaneously with communication between the other delivery-port and the exhaust. The valve-faces proper are made of suitable yielding material, preferably rubber, held in place in a novel and secure manner, yet permitting ready removal when worn.

Figure l is a plan view of a four-way valve embodying my invention, the top or cover of the valve-case being removed. Fig. 2 is a horizontal sectional view thereof, taken on the irregular line @c zc, Fig. 3. Fig. 3 is a transverse sectional view thereof on the line fr', Fig. 2, looking toward the right, with the cover on and valve-actuator in place. Fig, Il is an enlarged diametral section of one of the valve-shells, and Fig. 5 is a detached under side view of the actuator shown in Figs. l and 3.

The valve-case AX is divided by walls or partitions a c ce2 into chambers A, A', A2, and

A3, the latter having discharge ports or ducts D D', respectively, which in practice are suitably connected with the working cylinder of the apparatus with which the controllingvalve is to be used.

The main shaft l opens into the chamber A, and theexhaust E leads from the chamber A', said chambers being located on opposite sides of the partition o. and between the discharge-chambers A2 A3, as they may be termed.

Preferably threaded ports in the walls ct and a2 receive the oppositely located and alined annular valve-seats b b within the inlet-chamber A', and a valve-spindle hX, extended through the valve-ports, has bearings for its ends in removable glands or boxes 5 5, shown as screwed into threaded openings in the end walls of the case AX.

The spindle hX is threaded between the valve-seats at h2 to receive an internallythreaded sleeve b3, provided with disks b4, having outwardly-extended annular flanges b5, each disk, with its ange, forming a valveshell.

An annular rib or projection 3 is formed on the interior of each flange and an opposite rib l on the lsleeve b3, and a ring of rubber or other suitable yielding material 10 is forced into each valve-shell, being retained securely therein by the ribs or projections 3 and 4.

The rings 10 preferably project slightly beyond the flanges b5, forming yielding valvefaces to cooperate with the seats b land b', as clearly shown in Figs. l and 2, the yielding character of the faces serving to tightly and completely close the valve-ports when seated.

By rotating the sleeve b3 on the spindle when setting up the valves are adjusted relatively to the seats to correspond with the stroke of the spindle bx.

It will be obvious that communication between the inlet-chamber A and the delivery or discharge ports D and D is controlled by the movement of the valves described.

On the outer sides of the walls a a2 annular valve-seats c cA are provided for the ports, the seats being located in the dischargechambers A2 A3, respectively, the ports communicating with the exhaust-chambers A',

and a longitudinally-movabie valve-spindle 0X is extended through said ports into bearing-boxes G (i, screwed into the end Walls of the valve-case. The spindle is threaded ad jacent each port, as at 2, to receive thereon like valve-shells, (shown separately in Fig. 4,) each consisting ot a threaded hub c?, a disk c3, and an annular A(lange c", the inner faces ot' said flange and hub having, respectively, ribs or annular projections S S). Yielding rings l() described are forced into the shells, projecting beyond the hubs and flan ges thereof to form the valve-faces held in place by the ribs S 9.

lVhen the valve-shells are adjusted on the threaded portions 2 of the spindle, they are secured by suitable check-nuts n, the valves comprising the shells and yielding taces 'l0 controlling the communication between A2 A3 and the exhaustschamber A.

The spindles are herein shown as provided with annular enlargements or rings 7, to be engaged by a yoke f, connecting' the spindles bx CX to move them longitudinally in unison, said yoke having, as herein shown, a lugf on its upper face to loosely enter a slot g in the base of a rock-shaft g, supported in a packing-box or gland g on the cover ll, a handle g2 operating the rock-shaft. The rock shaft is at one side oi' the lug j, so that rotative movement of the former will move the yoke in one direction or the other.

From the foregoing description and the drawings detailed description of the operation of the valve mechanism will be unnecessary, it being evident that reeiprocation of the valve-spindles will alternately connect the deliveryports D l with the inlet and exhaust.

As soon as the pressure upon the several valves has been overcome by slight initial movement of the spindles the fluid-pressure tends to complete the movement, reversing the apparatus and acting to balance the valves.

lVhen a valve-face lO becomes worn or it hardens, it can be readily removed and a new one substituted, and as the Wear is very slight the. valve-faces will Wear for a long time.

Any other suitable means maybe employed for impart-ing longitudinal movement to the valve-spindles, and my invention is not restricted to the device herein shown.

Having fully described .my invention, what I claim, and desire to secure by Letters Pair ent, is-

l. In an apparatus of the class described, a valve-case having inlet, exhaust and discharge chambers, oppositely-located ports in the inlet and exhaust chambers, communieating directly with the discharge-chambers, a double valve within the inletchamber between the ports thereof, a valve in each discharge chamber opposite the port in the exhaust chamber, and manually operated means to impart positive initial movement simultaneously and in the same direction to all of the valves, the Huid-pressure in the chambers completing the valve movement and retaining the valves in position to establish communication between the inlet and one discharge chamber, and the exhaust and the other discharge chamber, and vice versa.

In an apparatus of the class described, a valve-case, discharge-chambers therein at or near it ends, interposed common inlet and exhaust chambers, ports communicating with the discharge-chambers,a reciprocable double valve Within the inlet-chamber, to control communication with the discharge-chambers, the pressure ot the tluid Within said inletchamber acting to complete movement of and hold the valve seated, a valve movable in each discharge-chamber to control the exhaust therefrom, spindles on which the valves are mounted, and manually-operated means to positively reciprocate said spindles to operate the valves simultaneously.

3. In an apparatus ot the class described, a valve-case having inlet, exhaust and discharge chambers, oppositely-located ports in the inlet and exhaust chambers, commu nicating with the discharge-chambers, two valve spindles extended through said ports, and having bearings in the ease ends, valves on one ot said spindles within the dischargechambers, to coperate with the adjacent port-seats, a double valve on the other spindie Within the inlotechamber, and 1nechanic-4 ally-operated means to positively and simultaneously reciprocate the spindles at will.

t In an apparatus of the class described, a valve-case having inlet, exhaust and discharge chambers, oppositely-located ports in the inlet and the exhaust chambers, communicatin g with the discharge-chambers, valvespindles extended through said ports and having bearings in the case ends, said spindles having threaded portions, a double valve adj ustable on one spindle Within the inlet-cham ber, tivo adjustable valves on the other spindle, in said discharge-chambers, and mechanically-operated means to positively move the spindles longitudinally and simultaneously, substantially as described.

ln an apparatus of the cl ss described, a valve-case having inlet, exhaust, and discharge chambers, ports in the inlet and exhaust chambers communicatingdirectly with the discharge-chan1bers, valves cooperating with the ports in said inlet and exhaust chambers, and mechanical means to impart at Will positive movement simultaneously and in one or the other direction to all of the valves, to direct the outtloviT ot' fluid from the casing through one or other ol' the discharge-chambers, substantially as described.

t3. In an apparatus ot the class described, a valve-case having inlet, exhaust, and discharge chambers, ports in the inlet and eX- haust chambers communicating directly With the discharge-cliambers, valves cooperating IOS Ito

omnes ai with the ports in said inlet and exhaust charnl other discharge chamber, and Vice versa, sub- 1o bers, and mechanical means to at will impart stantially as described.

positive initial movementsimultaneously and In testimony whereof I have signed my in one or the othei1 direction to all of the name to this specification in the presence of valves, the fluid-pressure in the chambers two subscribing witnesses.

completing the Valve movement and retain- GEO. V. DODGE.

ing the valves in position to establish com- Vitnesses:

munication between the inlet and one dis- JOHN H. MAXWELL, charge chamber, and the exhaust and the W. A. FRENCH.

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