US2111999A

US2111999A - Gas cock

Info

Publication number: US2111999A
Application number: US105123A
Authority: US
Inventors: Casper S Stuckenholt; John J Slavin
Original assignee: W J SCHOENBERGER CO
Current assignee: W J SCHOENBERGER CO
Priority date: 1936-10-10
Filing date: 1936-10-10
Publication date: 1938-03-22
Anticipated expiration: 1955-03-22

Description

March 22, 1938. c. s. STUCKENHOLT ET .AL 2,111,999

GAS COCK Filed Opt. 10, i956 l0 EOZA-lll456l46 7 ATTORNEYS Patented Mar. 22, 1938 UNITED STATES GAS COCK Casper S. Stuckenholt and John J.

land, Ohio, assignors to berger Company, tion of Ohio Slavin, Cleve- The W. J. Schoen- Gleveland, Ohio, a corpora.-

Application October 10, 1936, Serial No. 105,123

7 Claims.

Our invention relates to improvements in gas cocks.

The object of our invention is to provide a cock of this character which can not he accidentally opened to allow the gas to flow to the burners and pertains particularly to the type of cocks in which the operating stem of the plug valve has a longitudinal movement for releasing it from its locked position, so that the plug valve can be then rotated to difierent positions.

Another'object of the invention is to provide a cock of this type in which the operating stem and the spring controllingthe latching members are retained in their relative assembled position within the turning plug, so that the same can be readily removed from the housing without affecting their assembled operative relation.

A still further object of our inventionis to provide a simple'cheap and effective valve of this type having certain details of structure and combination of parts hereinafter more fully set forth. 1

In the accompanying drawing:

Figure 1 is a side view of the complete valve partly in section on the line l-l of Figure 2, showing the valve in open' position;

Figure 2 is a partially exploded view of the valve showing the valve and stem held in locked position by the latchingsleeve, the sleeve being partly broken away; v

Figure 3 is a perspective view of the latching sleeve;

Figure 4 is a plan view of the latching key;

Figure 5 is a side View of the same;

Figure 6 is an end elevation of the valve plug showing slots for receiving latchingkey and fingers of valve stem; and

Figure 7 is an end view of the valve stem.

Referring more particularly to the drawing the numeral l denotes a cast valve housing of conventional form having in one side a bored externally threaded right angular inlet extension 2, adapted to be connected with a suitablesource of gas supply, such as the manifold of a gas stove, not shown. The rear or outlet end of the housing, assuming that the gas cock is to be installed in horizontal position, is threaded as at 3 for connection to a'pipe line, leading to burners or the like. Rotatably mounted in the tapering central bore 4 of the housing I is a correspondingly tapered plug valve 5, which has its rear end bored to provide a chamber or passage 6 which communicates with the outlet bore 1 of the outlet extension 3 on the housing I. A transverse passage 8 through the wall of the plug places the axial bore 6 of the plug in communication with the inlet bore or passage 9 of the housing, when the valve is rotated to the open position illustrated in Figure l of the drawing.

While a one way valve has been illustrated it will be understood that the present invention is applicable to valves having any desirable number of positions. In operation the plug valve. 5 is manually rotated by means of a valve stem 10 having its lower end extending into and interengaging with a hollow extension I I on the outer endof the plug valve 5, the outer end of the stem being provided with areduced flattened portion 12 for the reception of a handle 53. Hollow extension H is formed with a circular recess l4 centrally therein and two oppositely arranged slots l5 and I6 of different width extending through the circumferential wall of the extension, above the recess, to permit finger portions 11 and I8, integrally formed on the inner end of the valve stem, to slidably and non-rotatably inter-engage the stem with plug 5 when said stem is partially entered axially within hollow extension II. The fingers I7 and I 8 are of appropriate size to snugly fit within the slots, and like the slots are of'different width to assure proper assembly of these parts.

A flanged apertured cap 19 seated upon the I outer'end of the housing I closes the open end of the housing and centersvalve stem ID with respect to the housing and the plug valve 5. Screws 20, extending through integrally formed apertured ears 2| and 2| on the flange 22 of the cap and through corresponding apertured ears 23 and 23' on the housing serve to secure the cap in place. The peripheral edge of the flange 22 of the cap, at each side of the ears 2| and 2| extends beyond these ears and rests upon the flat peripheral edge or outer end wall 24 of the housing, as best illustrated in Figure 1. The flange 22 is also cut away adjacent the apertured ear 2| to provide a rectangular recess 25 for a purpose presently described.

A coil spring 26 seatsat one end in the circular recess I 4 formed in hollow extension II of the plug 5 and normally projects beyond the outer extremity or end of the extension II. The other or free end of this spring freely supports a latch member or washer 21 having oppositely disposed

fingers

28 and 29 thereon, difieringin length and width from each other. The inner or rear end of the valve stem is adapted to seat on the floating latch' member 2'! and force the same towards the bottom of recess H1 in valve extension II; when the stem is axially moved by pressing against the valve handle l3. This movement of the stem forces the fingers on the locking washer and stem respectively to enter the respective slots l5 and 16 in the extension ll, until the longer finger 28 on the latching washer engages the peripheral edge or end wall 24 of the housing, thus locking the valve and stem against independent rotation but with freedom of limited relative axial movement. The apertured cap 19 is now slipped over the stem and screwed in place upon the housing, care being taken to register the large finger 28 on the latching member with the rectangular locking recess 25 in the cap. Coil spring 26 normally presses the finger 28 into this recess and against the end. wall 30 thereof to lock the valve in closed posi tion, with the inlet opening 8 in the wall of the valve out of communication with the inlet passage 9 of the housing.

To move the valve from closed toopen position the stem is moved axially until the finger 28 of the latch member has been moved out of the rectangular recess 25 in the cap sufiiciently far to clear the apertured ear 2| and to come into sliding contact with the peripheral edge or outer end wall 24 of the housing. A slight clockwise movement of the valve stem will then cause the finger 28 to ride out of the recess 25 and beneath the apertured ear 2| and in spring pressed engagement with the inner face of the latter, until the finger contacts a stop shoulder 48 on the cap flange 22, whereupon the valve will be positively stopped in full open position. Upon movement of the valve in an opposite or anti-clockwise direction, the finger will automatically snap into the recess 25 when the valve has reached full closed position. Further movement in an anticlockwise direction is blocked by the side wall 3| of recess 25, which wall acts as a stop shoulder.

Considerable trouble has been experienced with the type of valve just described due to the fact that such parts as the spring 26 and latch member 21 frequently become lost or misplaced when it became necessary for the inexperienced user to disassemble the valve for lubrication or other purposes. In order to overcome this objection the valve plug 5, valve stem 13, coil spring 26 and latching member 21 are removably secured together, so that these parts can be removed as a unit whenever it becomes necessary to grease the plug, which is frequently the case. The assembling of the parts after the greasing operation is also greatly simplified. This is accomplished by means of a latching sleeve or member 32, the cylindrical flange 33 of which fits snugly over the extension ll of the plug valve 5, with freedom for slidable and rotary movement thereon. The valve stem projects outwardly through an aperture 43 centrally disposed in the top wall 34 of the sleeve and serves to guide and center the sleeve during assembly operations. The periphery of flange 33 is provided with two oppositely disposed lugs or offsets preferably formed by inwardly displacing the metal of which the flange is made, as at 35 and 36 respectively. This flange is also formed midway the

offsets

35 and 36 with a rectangular recess or slot 31 corresponding in size to the large recess or slot I5 in extension ll of valve 5.

To assemble the latching sleeve the latter is slipped lengthwise over the valve stem II, with the

lugs

35 and 36 in register with the slots 15 and [6, until the lugs pass beyond a peripheral shoulder 38 on the plug valve, the stem being also forced inwardly, at the same time. The

sleeve is now rotated one quarter turn until the recess or notch 31 in the sleeve registers with the large slot 15 in the valve, and the

lugs

35 and 36 are located mid-way between the slots [5 and I6. If axial pressure on the valve is now released the finger 28 on the floating latch member will be forced outwardly into the notch 31 in the sleeve 32, outward axial movement of the latter being prevented by engagement of the

lugs

35 and 36 with the peripheral shoulder 38 on the hollow extension H of the plug valve. When the cap 19 is screwed to the housing the latching sleeve is held rather snugly to the valve extension ll, and being capable of but a very limited axial movement, is effectually prevented from jumping out of place.

While the locking sleeve latches the plug valve, and cooperating parts together, so that they can be removed from and replaced in the housing, as a unit, the operation of the valve 'is in no way. interfered with. As the finger 28 of latch member or washer 21 is always in the notch 31 of sleeve 32, rotary movement of the stem is accompanied by a corresponding movement of the sleeve 32. Furthermore, as the valve is moved from open to closed position the finger 28 on latch member 21- and the notch 31 in the sleeve 32 are simultaneously moved into register with the recess or notch 25 in the cap, thus permitting the finger to be moved axially in both notches, under the snap action of coil spring 26.

Having thus described our invention:

What we claim is:

1. A valve comprising a housing, a rotatable valve plug therein, a valve stem longitudinally movable in said plug but rotatable therewith and outwardly spring pressed, a flanged latching sleeve rotatably and loosely sleeved on the end of said plug and locked against longitudinal movement and. engaging the valve stem for limiting the outward movement of the valve stem in the valve plug, and latch means for locking the plug against rotation in the housing and released by the inward movement of the stem against the spring tension.

2. A valve comprising a housing, a rotatable valve plug therein, a valve stem longitudinally movable in said plug but rotatable therewith and outwardly spring pressed, an apertured flanged latching sleeve rotatably sleeved on the end of said plug and locked against longitudinal movement and engaging the valve stem for limiting the outward movement of the valve stem in the valve plug, and latch means for locking the plug against rotation in the housing and released by the inward movement of the stem against the spring tension.

3. A valve comprising a housing, a rotatable valve plug therein, a valve stem longitudinally movable in said plug but rotatable therewith and outwardly spring pressed and having an outwardly faced shoulder, a detachable apertured flanged sleeve rotatably sleeved over the end of the plug and engaging the shoulder on said stem, and lugs on the flange of the sleeve cooperating with a shoulder on the plug for limiting the outward movement of the valve stem in the valve plug, and latch means for locking the plug against rotation in the housing and released by the inward movement of the stem against the spring tension.

4. A valve comprising a housing, a rotatable valve plug therein, a valve stem longitudinally movable in said plug but rotatable therewith and outwardly spring pressed, a detachable apertured flanged sleeve loosely sleeved. over one end of the plug and engaging a shoulder on the valve stem, the flange of said sleeve having oppositely disposed inwardly extending lugs cooperating with a shoulder on the plug for limiting the outward movement of the valve stem in the valve plug, and latch means for locking the plug against rotation in the housing and released by the inward movement of the stem against the spring tension.

5. A valve comprising a housing, a valve plug slotted and recessed at one end rotatably mounted in said housing, a valve stem longitudinally movable in said plug and outwardly spring pressed and having an outwardly faced shoulder, an apertured member rotatably sleeved on the slotted and recessed end of said plug and engaging the shoulder on said stem and having a notch adapted to register with one of the slots in said plug, lugs on said member cooperating with a peripheral shoulder on the plug for limiting the outward movement of the valve stem in the valve plug, a latch associated with the stem extending through one of the slots in said plug and into a notch in the housing for locking the plug against rotation in the housing and released by the inward movement of the stem against the spring tension.

6. A valve comprising a housing, a rotatable valve plug therein, a valve stem longitudinally movable in said plug, and outwardly spring held,

a sleeve loosely mounted on said plug and having inwardly extending lugs for holding the sleeve against longitudinal outward movement on the plug and having an inwardly turned outer end engaging a shoulder carried by the valve stem for limiting the outward movement thereof in the plug, and a latch means for locking the plug in the housing against rotation and released by the inward movement of the valve stem in the plug to allow the plug to be rotated by the valve stem.

7. A valve, comprising a housing, a rotatable valve plug in said housing, and having a recess in one end, a spring in said recess, a valve stem extending into said recess and engaging the spring, and having a portion beyond the plug reduced forming a shoulder, a sleeve surrounding the outer end of the plug and having inwardly turned lugs engaging the plug for locking the same thereon, an inwardly turned flange carried by the sleeve and extending over the shoulder on the valve stem for limiting the outward movement thereon, and a latch operated by the inner end of the valve stem and extending through cutaway portions in the sleeve and entering a notchin the housing for locking the plug against rotation therein when the stem is held outwardly by the spring.

' CASPER S. STUCKENHOLT.

JOHN J. SLAVIN.