US1253283A - Engineer's valve. - Google Patents

Description

E. J. SCHANCK.

ENGINEER'S VALVE.

APPLICATION FlLED APR.29, I9l6.

Pabten'bsd Jan. 15, 1918.

flame/y J; Sahmmh To all whom it may concern.

nn rrnn ear EMERY J. scnAiicK, or CEN'IBAJLI'A, .wasnme'ro v.

Enemnnns VALVE.

Specification of Letters Patent Application filed April 29,'1916.- Serial No. 94,440.

Becit known that I, EMERY J. ScIrANCn, a citizen of the United States,- resldlng at Centralia, in the county oi Lewis and State oi iashington, have invented certain new and useful Improvements in Engineers" Valves, of which. the following is a specification. v My invention relates tOrlIIiPlOVGlDQDlIS in engineers brake valves:

An important object of the invention to provide a-brake valve ofthe above'mein tioned"character, so constructedv that the.

sameniay be manually operated to-supply a (lGSllECl degree or pressure to the brakes, and

which automatically :operates: to retain such 1 pressure constant for. a prolonged period.

A iurther ObJect'of the lnventlon is to provide a valve of the above mentioned character, which is simplein construction, inex-.

pensive to manufacture, convenient in use,

strong and durable.

Other ob ects .and advantages of the invention will beapparent duringthe course of the following description.

Inthe accompanylng drawmgs forming a part-of this specification andin. which like numerals are employed to designate like parts throughout the same,-{

Figure 1 is'a central vertical longitudinal sectional view throughjapparatns embodying the invention,

Fig. 2 is a horizontal sectional view taken on line 22 of Fig. 1, and, i

Fig. 3 is a section ofaplurality of elements, separated and in the-position to be assembled,

In the drawings, wherein for the pur pose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates a valve casing, the upper end of which is closed by a cap 6 having a gland 7, as shown.

The casing 5 is provided in its bottom with a pressure inlet coupling 8 having connection with the pressure supply pipe 9. Upon one side the casing 5 has an outlet coupling 10 having connection with a pressure outlet pipe 11, which leads to the brakes or train line. Connected with the opposite side of the casing 5 is a pipe 12, communicating with the pressure gage 13, which in dicates the degree of pressure being applied to the brakes.

The gland 7 has a screw-threaded opening 14;, receiving an exteriorly screw-threaded tubular stem 15, the lower endot which is forked to provide spaced arms 16. Those arms are adapted to fit between'ears l7,

rigidly mounted upon axrotatable exhaust valve 19," and preferably formed integral This exhaust valve has an extherewithl haust. port 20formed therein, and adapted to be movedinto and out of registratioir with an exhaust port 21 formedin thebottom of the casing 5. The exhaust valve 19 is rotatably mounted uponthe bottom of the casing 5 and has a central opening in permanent registration Wltll. the coupling Rigidly attached to the upper end oi the spindlepl5 a hand lever 2", adapted to:

contact-with a stop 24:, rigidly attached to thevcap 6, when the pressureis cut oil from the brakes and exhaust port 20. moved into.

registration with-the exhaust port 21 whereby the interior of the casing 5 is placed in communication with thQMDHIOSPlIGPB. The

numeral 25 designates apressure control valve, which is' vertically movable, ar 'anged near and above the inlet coupling 8 and hasan extension 26 operating therein. The valve 25 is provided with an opening or. re cess 27, whichdoes not extend entirely therethrough and this recess receives the reduced end 28 of a coupling 29. The upper end of this couplingfits within a compressioncoil spring30, receiving the reduced lower end of a coupling 31.: Fitting within arecess in the coupling 31 is a tension rod 32-, extending through the tubular spindle 15 and having screw-threaded engagement therewith. The upper endof this rod. is preferably formed square for engagement with a suitable tool for. turning it and the tensionrod carries lock nut 83, as is obvious.

In operation, the lever 23 is swung to the inactive or exhaust position, until it contacts with the stop 24. The exhaust port 20 is now in registration with the exhaust port 21. If pressure is fed into the casing 5 from coupling 8, the tension rod 32 is adjusted until the spring 30 is placed under compression to out off this supply of pressure.

It may be assumed that there is a constant llatcnted Jan. 15, mm.

To apply the brakes, the lever 23 is swung to the right, and turns the exhaust valve 19 to the closed position.' The turning movement of the stem causes it to move upwardly, thereby reducing the compression of the spring 30, whereby the sixty pounds pressure in the pipe'9 will unseat the valve 25. This valve remains unseated until the pressure in the shell 5 is equal to the pressure in the pipe 9, there being then no tendency for pressure to pass through the opening of the valve seat, at which time the spring 30 will close the valve 25. The valve sorted to without departing from the'spirit of the invention or the scope of the subjoined claims. 7 Having thus described my invention, I claim: V

1; Inan air brake valve of the character described, a casing provided in its bottom with a fluid pressure inlet opening and in its side with a fiuid pressure outlet opening, said casing being also provided in its bottom with an exhaust opening which leads to the 7 atmosphere, a rotatable disk valve arranged upon the bottom of the casing and having a substantially centrally arranged openin in permanent communication with the uid pressure inlet opening and an exhaust opening adapted for movement into and outof registration with the first named exhaust opening, a rotatable spindle having screwof parts may be re let-opening, said casing being alsoprovided in its bottom with an exhaust opening which leads to the atmosphere, "a rotatable disk valve arranged uponthe bottom of the casing and having a substantiallycentrally arranged opening in permanent communication with the fluid pressureinlet opening and an exhaust opening adapted for movement intoand outof registration with the first named exhaust opening, standing lugs formed upon the upper side. of the disk valve, a rotatable tubular spindle having screw-threaded engagement with the top of the casingto moveflongitudinally pairs of up- 155 2. In an a1r brake valve of the character when rotated and provided at its lower end i with a fork having tinesfitting between-the pairs of lugs, means to turnthe spindle, a

movable pressure inlet valve arranged within the'casing adjacent its bottom and serving to normally close the pressure inlet openmg, a sprlng engaging the pressure .inlet valve, and a rod having screw-threaded ent gagement within the tubular spindle and connected with the spring. 7

Intestimony whereof I affix in presence of two witnesses.

EMERY J. SCHANCK,

my signature Witnesses B. H. RHoDns, VV.- H. Hones.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

I Washington, 'D. C. f V r

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