US 1443675 A
Description (Le texte OCR peut contenir des erreurs.)
Patented dan. 36, 1923.
JOHN R. BOWLIER, OF LOS ANGELS, CALIFORNIA.
Application led May 3, 1921. Serial No. 466,421.
To @ZZ `whom t may Concern:
Be it known that JOHN R. BOWLER, a citizen of the United States of America, residing` at Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful mprovements inl Valves, of which the following is a full, clear, and exact description.
This invention relates to valves and has for some of its principal objects to provide a valve which is simple in construction, which consists of a small number of parts, is reliable in operation, and may be employed either as an intake or discharge valve in connection with air, or other fluid, compressors, Diesel engines and other kinds of machines and apparatus. ther objects and advantages will appear as the invention is hereinafter disclosed.
Referring to the drawings which illustrate what I now consider a preferred form of the invention,
Fig. 1 is a sectional elevation of the valve;
Fig. 2 is across-sectional view taken on the line 2-2 of Fig. 1; and
FigB is an inverted plan view of the devicey shown in Fig.1.
It will be seen that the valve comprises a casing provided with inlet and outlet ports, and a valve member therein which cooperates with a valve seat. The casing is shown in the form of a cup-shaped element 10 having a cylindrical interior 11 and a cap 13 detachably secured to the element 10 as by means of coacting screw-threads 111. The cut-away portions 12 provided on the element and cap serve to enable these elements to be gripped by wrenches or other suitable tools to secure and detach the cap from the cup-shaped element.
A valve or valve member 15 is mounted within the casing for slidable relative movement with respect thereto in an axial direction. This valve member is shown (see Fig. 2) provided with a cylindrical portion 16 which slidably engages the interior 11 of the element 10 and preferably constitutes the sole guiding means of the valve in its opening and closing movements. The bottom of the element 10 v(see Fig. 3) is shown provided with one or more openings 16 which I shall hereinafter refer to as outlet ports, and the cap 13 is shown provided with an opening 17 which I shall hereinafter refer to as an inlet port. The cap 13 is provided with a valve seat 18 adapted to be engaged by the frustro-conical portion 19 of the valve 15 to control communication between the inlet and outlet ports 17 and 16. It will be noted 'that when the valve is closed or seated, as shown in Fig. 1, no fluid can pass from the inlet to the outlet ports Vthrough the valve casing. When the valve moves away from the seat 18, in other words when the valve opens, fluid may pass from the inlet port 17, through the passages or peripheral slots 2O provided in the valvemember 15, and thence through the outlet ports 17. The operation of the valve may be controlled in various ways, simple and preferred means being illustrated in thedrawings and described as follows. The valve member 15 is provided with a downwardly extending boss 21 which is engaged by the upper turn of a compression spring 22. The other end of said spring abuts against the end wall of the element 10. It will therefore be seen that the valve 15 is biased to seated or closed position. So long as the total fluid pressure on the upper part of the valve 15 (i. e. at 17 fails to exceed the total fluid pressure on the lower part of the valve (i. e. at 11 or 16) by an amount sufficient to overcome the upwardly exerted force of the spring 22, the valve will remain closed. However when the first named Huid pressure is sufficiently high to overcome both the opposing fluid pressure and the force of the spring, the valve member 15 will move awa from the seat 18 and fiuid will pass through the valve in the following path: through the inlet port 17, past the valve seat, through passages or slots 20 into chamber 11 and thence outwardly through the outlet ports 16.
The boss 21 is preferably provided with a slot 25 adapted to receive a screw-driver or flat bit whereby the valve member 15 may be rotated or oscillated with respect to the cap 13 for the purpose of grinding the valve, i. e. to cause the valve portion 19 to fit the valve seat. 0
The character and strength of the spring 22 determine the difference in fluid pressure (on opposite sides of the valve) at which the valve will open. It will therefore be clear that by choosing a suitable spring this point of opening may be selectively con* trolled within reasonable limits. rlhe imtial tension of the spring may be selectively controlled by the choice of a gasket or Washer 30, or brass Ior other suitable mates out by other means.
rial. hxwi a thickness correspondl t9 the tension desired. By employing .a ati-ely thick washer or gasket the initial force of the spring 22 will be less than when a relatively thin gasket is employed.
As hereinbefore set forth my valve is adapted to various uses. It may be employed either as an intakefor discharge valve thus minimizingr the number of stock and sparefparts whiehmust be .kapt on hand. If used in connection'withair, or ,other fluid7 compressers, wouldbeheld in place by a suitable cage "(not shown). The specific valve illnstnated. and-particularly the easing thereof. is designed te'be .appliedte'ithe second stage of air compressor, ron a Winton Diesel engine No. w24 `IV. and, infactual service in :this connection, Yhas been found to be most -eective and'rel-iable in operation.
In vaccordance with'the provislons of the patent statutes, I have hereis'n described-.the principle of operation of myzinvention, together with the apparatus WhichInoW oonsider to -represent the yrbest 'embodiments thereof, but I desire to have it understood that the apparatus disclosed isfonly illustrative and -that the invention-'can rbeealrried Also 'while it is clesigned 'to use the various lfeatures `undelements 'in the combinations fand relations clescribed, 'some iol these rmay vbe `altered and other'somitted withinthe seopeof the *folylowingasleims, and theinvention extends `to such lune.
Y1. A valveor'highpressureair compres sors comprising in combination, a *two-part c ng, gne of Said arts hav' an inlet port aii t'he other partiliaving amutet port, one of said parts being provided With a frustreconical valve seat and the other with a cylindrical bore, la valve member having a. solid Substantially cylindrical portion adapted slidably to engage the inner cylindrical wall of the last named part of said casing, said valve member having a frustro-conical end adapted to engage said valve-seat, the diameter 4of the base of the frustruan being substantiallythe same as that of said cylindrical lportion of the valve, said valve member having a plurality yof peripheral slots parallel to the `alrrisof said member #and through which fluid isadapted rto pass from one of said ports to the other in .substantially straight paths,-and a compression spring in engagement with 'the end of said valve member opposite the fnustroconical end yand in engagement with one of said parts of the casing /for biasing said valve toward closed position. Y
2. A v-alveas set forth in-elaiml in which the springconsists'of a helix which is offspiral configuration `when compressed into a plane, and which has its smaller end adjacent the valve member.
3. A valveas set forth in claim lfin which the 'exteriors yof tl;1e.tvvo parts of the casing are similar whereby the valve may be interchangeably Aemployed as a suction .or a discharge valve.
In testimony whereof lihereto `aiiir my signature.