US856655A - Valve. - Google Patents

Description

No. 856,655. PATENTED JUNE 11, 1 907. P. B. MoMILLIN & M. P. MORRISSEY.

VALVE.

APPLIOATION FILED D110.19,1906.

3 SHEETBSHEET 1.

Q Vi u use a LQ attuned PATENTED JUNE 11, 1907 P. B. MOMILLIN & M. P. MORRISSEY. VALVE.

APPLICATION FILED DEC. 19,1906.

3 SHEETS-SHEET 2.

PATENTED JUNE 11, 190?, P. B. MGMILLIN & M. F. MORRISSEY.

VALVE.

APPLICATION FILED 17110.19, 1906.

wthwoaeo UNITED STATES K B. MGMILLIN A EN OFFICE.

AND MICHAEL T. 'MORRISSEY, or MOUNT GILEAD, 'onro.

' VALV act description of the-invention, such as willenable others skilled in the art to which it appertains tomake and use the same.

' The present invention relates to improve ments in the construction of valves, and

more particularly to that type of valves which are es e'cially designedfor use in connection with ydraulic machinery. l

One of the objects of the invention is to, provide syvalve by means of which the sup- 1y of the fluid'to the cylinder can be reguated without influencing the flow of the fluid through the pressure or supply pipe.

A furtherobject of=the invention is to provide a valve that canbe quickly operated, has a positive. action, and com rises few and simple parts which are peculiar y arranged so as to enable ready access to behad thereto for cleaning or repairing purposes.

' With these and other objects in view, the invention comprises certain novel constructions, combinations and arrangements of partsas will be hereinafter more fully described and claimed. 7

In the accom anying drawings :Figure 1 is a vertical, ongitudinal, sectional view throu h a valve constructed in accordance with t e invention, the various parts being in the position assumed when fluld pressure is Fig. 2 is val ve casing on the-line 3-3 of Fig. 2. Fig.

4 is a vertical, longitudinal, sectional vi'ew through 'thevalve showing the mechanism in thel'position assumed when the pressure is bein maintained in the cylinder. Fig.5 is a at View showing the parts in the position when the pressure is being released from the cylinder. I

ates the valve'ca sing which is provided wit a plurality-{of valve chambers 2, 3 and 4'. In the present instance thesefvalve chambers are shown as openin J upon the-lower side of the valve casing 1 an as having a parallel relation to each other.

Specificationof Letters Patent.

Application filed December 19,1906. Serial No. 348,652.

Patented J une 11, 1907.

Removable lugs 5 are employed to close the open ends 0 the valve chambers, and it will be readily apparent thatwhen these plugs are removed free access can be hadto the valve chambers for cleaning and re airing purposes. Extending through the va ve casing 1 from the top or opposite side thereof are a plurality of openings 6, 7 and 8 correspondlng to the valve chambers and communicating with the inner ends thereof. outer portions of these 0 enings 6, 7 and 8 are enlarged and threaded as indicated at 9 for the receptionof the nuts or collars 10 through which the valve stems 11, 12 and 13 pass. The inner, ends of these valve stems extend within the valve chambers and carr the valves 14, 15 and 16. Owing to the sli ing action of the valve stems 11, 12 and 13, the outer extremities of which project be-' yond the casing 1, it will be apparent that the action of the valves can be controlled by external means. It may also bernentioned that packing 17 is placed around the valve stems and held in position by means of the nuts 10 so as'to prevent any leakage.

The two end valve chambers 2 and -4 are shown as connected by means of the bypass 18 which may be formed in a lateral enlargement 19 u on one side of the casing 1 as shown in-t e drawings. An inlet port 20 is formed in connection with the valve casing and m the present instance has a transverse -direction with respect to the valve chambers 2, 3 and 4 and-extends across the inner end of the valve chamber 4. Communication is established between the valve chamber 3 and the inlet port- 20, b means of the passage 21 at onesideof the c amber 3, and in a similar hydraulic cylinder or other machinery to be operated- The outlet 24 extends transversely across the inner ends of the valve chambers 2 and 3 and communicates with the said chambers by means of the openings The 25 and 26 respectively, thesaid openings be- I in controlled by the valves 14 and 1 5.

ormed upon the upper portion of the easthe closed valves 14 and 16. V

t1on 1t may be mentioned that the valve 16 ing are a pair of oppositely disposed arms 27 between which is mounted the operating lever 28'. The inner end of the said operating lever is formed with a cam surface adapted to co-operate with the outer ends of the valve stems 11, 12 and 13 to control thevalves 14, 15 and 16 and the distribution of the fluid pressure. In the specific formation of the cam surface it will be observed that the same comprises two oppositely inclined portions 29 and 30, the latter having a depressed por tion 31. In order to hold the valves normally in a closed position spring members 32 are employed which are interposed between the valves and the plugs 5. In the present instance helical springs are employed 'and projections 33 are formed upon the plugs 5 and co-operate with similar projections 34 upon the valves to hold the springs normally in operative position.

When the operating lever 28 is thrown in the position shown in Fig. 1 so as to utilize the portion 30 of the cam surface it will be observed that the depressed portion 31 is cated over the outer end of the stem 12 and does not unseat the valve 15, while the valve stem 13 is pressed inwardly to open the valve 16 and cause the fluid to pass through the inlet port 20 and opening 22 into the valve chamber 4. When the lever is in this position, it will be readily apparent that owing to the fact that the valves 14 and are closed the fluid will ass through bypass 18 and thence through t e chamber 2 and outlet port 23 to the hydraulic cylinder or other machinery being operated. Should it be desired to maintain the pressure in the cylinder without interfering with the flow of the fluid through the pressure or inlet pipe, this result can be accomplished by throwing the operat- 1ng lever 28 into the position shown in Fig. 4

where the central portion of the cam surface operates upon the valve stem 12 to open the valve 15, while the springs 32 causes the valves 14 and 16 to assume a closed position. When the valve parts are in this position it will be apparent that the fluid entering the. inlet passes directly away from the valve casing through the chamber 21, opening 26, and outlet 24, while the pressure within the cyhnder is maintained owing to the fact that backward-flow of the fluid is prevented by In this conneccloses a short time before thevalve 15 is opened. As otherwise there would a return of fluid from the press cylinder and a corresponding reduction of pressure therein, and also a water hammer when the valve 16 was seated. By throwing the operating lever lnto the position shown in Fig. 5 the portion 29 thereof is caused to depress the valve stems 11 and 12 and open the valves 14 and 15, the valve 16 assuming a closed position. This permits a direct. passage of the fluid through the valve casing from the inlet 20 to the outlet 24 owing to the fact that the valve 15 is open, and also enables the fluid .Within the hydraulic cylinder to pass outwardly through the opening and outlet 24 owing to the fact that the valve 14 is opened. It will thus be apparent that the various valves can be readily controlled through themedium of the operating lever in such a manner as to apply pressure to the press cylinder, to hold the pressure in the press cylinder, or to release the pressure from the press cylinder without interfering with the flow of the fluid through the pressure pipe. This feature is particularly advantageous where the pressure is produced by a pump, since it practically eliminates all back pressure and prevents water hammer, thereby greatly prolonging the life of the mechanism.

Should it be found desirable to employ the valve in connection with an accumulator system, all of the operations are the same as previously described except that the central valve 15 should be omitted and its seat made solid so as not to allow any fluid to escape from the accumulator in holding the pressure and in releasing the pressure.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent 1. The combination of a valve casing provided with a plurality of valve chambers, the said casing being formed with an inlet com' municating with one of the chambers and outlets communicating with the remaining chambers, a valve for each of the chambers, and means for operating the valves whereby the inlet can be placed in communication with any of the outlets.

2. The combination of a valve casing, provided with a plurality of valve chambers, the

said casing being formed with an inlet cornmunicating with one of the chambers and outlets communicating with the remaining chambers, a valve within each of the valve chambers, a stem for each valve, and a camcontrolling the movements of the valves throu h the said valve stems.

- 3. The combination of a valve casing, provided with a plurality of valve chambers, the said casing being formed with an inlet in communication with one of the chambers and an outlet in communication with each of the remaining chambers, a valve for each of the chambers, a valve stem for each of the valves, the said valve stems projecting outwardly beyond the casing, and external means for controlling the action of-the valves through the valve stems.

' 4. The combination of a valve casing, provided with a plurality of valve chambers, the said casing being formed with an inlet communicating with one of the chambers and an outlet communicating with each of the remaining chambers, a valve for each of the the said valve stems projecting beyond the casing, and a cam operating upon the valve stems to control the movements of the valves.

5. The combination of a valve casing, provided with a plurality of valve chambers openin upon one side of the casing, the said casing eing formed with an inlet communieating with one of the chambers and an outlet communicating with each of the remaining chambers, removable plugs closing the valve chambers, a valve within each of the valve chambers, and means for controlling the action of the valves whereby the inlet can be thrown into communication with any of the outlets.

6. The combination of a valve casing, provided with an intermediate valve chamber and with a air of end valve chambers, the said casing eing formed with an inlet communicating directly with the intermediate chamber and with one of the end chambers, an outlet communicating directly with the opposite end chamber, a second outlet communicatin with the same valve chamber and also with the intermediate chamber, and

a bypass connecting the end valve chambers, and valve means within the valve chambers.

7. The combination of a valve casing, provided with three valve chambers having a parallel relation to each other, the said casing being formed with an inlet extending transversely across the inner end of one of the end chambers and communicating directly with the intermediate chamber, an outlet assing transversely across the inner ends 0 the o posite end chamber and the intermediate chamber, a second outlet communicating directly with the opposite end chamber, and a bypass connecting the end chambers, passages being formed between the inner ends of the chambers and the inlet or outlet passage extending transversely across the same, and valves operating within the valve chambers.

In testimony whereof we a'i'lix' our signatures in presence of two witnesses.

FRANK B. MoMILLIN. MICHAEL F. MORRISSEY. Witnesses:

H. L. SCHUMAN, A. E. WELLBAUM.

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