US920268A - Hydraulic valve. - Google Patents

Description

s. s. GASKEY.

HYDRAULIC VALVE. APPLIOATION FILED MAY 1a, 1903.

920,268. Patented May 4, 1909.

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S. S. GASKEY.

HYDRAULIC VALVE.

APPLIOATION run) my 13, 1908.

920,268. Patented May 4,1909.

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UNITED sTA'rns PATENT OF ICE. f

SAMUEL S. CASKEY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO CASKEY VALVE COMPANY, OF NEWYORK, N. Y., A CORPORATION OF NEW YORK.

HYDRAULIC VALVE.

Specification of Letters Patent.

Patented May 4,1909.

I Application med Kay 13, 1908, Serial No. 482,736.

To all whom it may concern:

a citizen of the United States, residing in forth. I

the city and county of Philadelphia, State of Pennsylvania, have invented a new and .nseful Hydraulic Valve, of which the followin is a specification.

y invention relates to a new and useful valve" which is adapted for use with steam or air, as a hydraulic or a blow-off valve, and consists in providing means whereby the valve becomes more effective as the pressure is increased.

It further consists of a sealing bushing which is ada ted to prevent leakage around the plug. It rther consists of novel details of constructioh, all as will be hereinafter fully set Figure 1 represents a vertical sectional view of a valve embodying my invention. Fig. 2 represents a bottom p an view thereof. Flig. represents a vertical sectional view s o resents a horizontal sectional view of the valve shown in Fig. 3.

Similar'numerals of reference indicate corresponding parts in the figures.

eferring to the draw' s. It is well known among hydraulic engineers that the vital parts of hydraulic systems are the operative valves and stop valves and the expense of such systems is in the repairs that must be made on the valves aside from the fact that while all such valves are standing idle, they are wasting energfi at high pressure, said waste returning t rough the exhaust pipe to the pum tank and it is further well known that wit the present form of valves the grit which comes 7 through the pipe even though the water be filtered, may prevent closure of the vavle, thus permitting eakage and forming grooves in the valve, as will be evident. My invention is designed to overcome these defects and in the drawings, I have shown a construction which I have foundin practice to operate successfully, but it will be evident that the arranges ment of the parts may be varied and other instmmentahties may be empolyed which come within the scope of my invention and I do not, therefore desire to be limited in every instance to the exact form as herein shown and described, but deslre to make such ch anges as may be necessary.

a spring for assisting in retaining the sea ing bushing in position. Fig. 4 rep 1 designates the body of the valve having the threaded opening 2 at the pressure end which is adapted to be connected up with an accumulator, compressor or boiler depending upon the use desired and 3 is a threaded opening by which the valve is connected to the ram for hydraulic use, with the engine for steam and air and with a pipe which discharges to the atmosphere when the valve is used as a blow-off.

4 designates the exhaust opening which is connected with a pipe leading to any suitable point.

5 desi nates a bore in the valve body communicating with the threaded opening 3, and 6 designates a bore communicating with the exhaust 4.

7 designates a circular lug, the walls of which are straight as will tiius be understood from Figs. 1 and 3, which is provided with a bore 8 and the branch 9 leading therefrom, said plug being rotatably mounted in a suitable opening ii the body, the walls of which opening are circular to correspond with thato the lug.

10 esignates a collar on the plug which abuts a suitable portion of the body 1 and said plug is provided with the threaded end,

11 for the reception of the nuts 12 for locking the parts in position, said plug also having the s uared end 13 for engagement by a wrenc 1 or other operating tool.

Movably mounted in a bore in the body 1 is the sealing bushing 14 the inner face of which is curved to correspond to the curvature of the wall of the plug 7 and with which the said bushing makes a ground joint connection, it being understood that the bushing is preferably of soft metal. A suitable bore 15 is provided in the bushing which corresponds to the bore 8 in the plug 7.

16 designates a retaining. plug which is screwed or otherwise secured within the body 1 at a suitable point with respect to the bushing, it being noted that the plug in Fig. 1 is provided with a bore' 17 which is larger than the bore 15 of the bushing 14, whereby it will the plug 7.

the sealing bushing proper position against In Fi 1, I have omitted the spring as it is not a ways necessary for the operation of the arts.

T e operationvof the'valve will be readily apparent. s own in Fig. 4, the bore 8 is in communication with the exhaustbore 6 and the branch- 9 is in communication with the bore 5 so that the valve is exhausting, it being noted plug 7 is rotated in t e direction indicated by held a alnst .the

the arrow in Fig. 4, bringing the bore 8 into line with the bore 15 and with the bore 5 so that a straight passage for the fluid is provided.

It will be noted that by this construction the incoming fluid is directed in a proper manner against the bushing 14 so as to tightly force the same always against the plug 7 so that no leakage can occur between the walls of the bushing 14 and the walls of the plug 7, since the pressure will tend to force the sealing bushing more firmly against the plu the greater the pressure and this action wi I be assisted by the spring 18 when the latter is" used. In addition, as the bushing 14 wears, it being of softer material, it will still be moved u or forced into proper position and lug 7 and the ground joint forme between t he walls of the said bushing and plug will be so intimate as to revent passage of any grit therebetween. neces sary, may provide on the plug 7 the packing 19, which is referably of leather or any suitable materia in order to prevent leaking of any back pressure while in the bushing I may provide a. packing 20 which is of leather or any suitable material, which will prevent any leakage between the walls of thebody 1 and the said bushing 14. Any suitable means may be employed for sto ping the T0- tation of the plug so that the ores or passages will be 1n suitable position and in the drawings, I have shown a lu 21 on the bod 1 and a washer 22 mounte to rotate wit the plug 14 and having the shoulders 23 thereon which abut the lug 21, as best seen in Fig. 2, at the proper time, in order to lo- 1 the body 1 after which the bushing 14 andcate the bores in suitable position. Attentionis further directed to the fact that the parts of the valve can be removed Without releasing the body portion from its suitable connection, this being more 7 particularly shown in Fig. 3, wherein by removing the nuts 12 the plug 7 can be withdrawn from spring 18 can also be withdrawn through the clrcular openingl in the body'which receives the plug 7. T e advantages derived from When the plug is in the position" this will be evident to anyone. While I have shown 1 the bushing 14 considerably longer than that shown in Fig. 3, it will of course be apparent that the bushing 14 in Fig. 1 can be made any suitable length in order to be removed in a similar manner as above described, it being only necessary to place the retaining plug '16 closer to the plug 17 than is shown in F1 1. It will-be further apparent that while I have described the plug 7 as being rotated in the body,1,I may, if desired, or find it necessar have the plug stationary and rotate the b0 y 1 around the plug with the -same; effect as reviously described, in which eventfiexib e connections wouldbe made for the bod portionl. It will be understood that in the c aims while I I have-called for a rotatable plug, I desire it to be understood thateither the body 1 or plug. 7 may be rotated as may be required it simply being necessary to have relative rotation between the plug and the body.

I Having thus described my invention,=wha t I claim as new and desire to secure by Letters Patent, is:'

1. In a valve, a body having a circular opening, a rotatable cylindrical plug seated in said opening and contacting with the 'walls thereof, a sealing bushing abutting said plug and reventing leakage therebetween, and packing between the body andthe bushing for preventin leakage therebetween.-

2. In a va ve, a body having a circular opening, a rotatable cylindrical plug seated to be held tightly against said plu by the.

pressure in the valve and packing etween the body and the bushing, preventing leakage therebetween.

3. In a valve, a body having a bore therethrough, and a circular opemng therein, a rotatable cylindrical lug in said 0 ening contacting with the wa ls thereof and aving a bore therein and a branch leading therefrom, a bushing in the.bore of said body v adapted to abut said plu and having a bore.

that the bore will be in ro er posltlon. S El: S. CASKEY. Witnesses:

C. D. MCVAY,

E. B. MORRIS.

adapted to register w1th t e bore of said plug

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