US1880648A - Gas cock - Google Patents

Description

Oct. 4, 1932.

M. YABLICK GAS COCK 2 Sheets-Sheet 1 Filed Feb.. 21, 1930 Oct. 4, M YABLICK GAS COCK Filed Feb. 21, 1930 2 Sheets-Shee 2 Patented Oct. 4, 1 932 UNITED STATES MAX winners, on NEWARK, NEW JERSEY GAS COCK I Application filed February 21, 1930. Serial No. 430,345.

cidental turning on of the gas by accidental movement of or tampering with the gas cocks commonly employed in gas burners. More specifically, it is an object of this invention to provide a safety device of this character which operates only through intention and design and independently of the customary motion of the handle of the gas cook to permit movement of the handle'from the posi- 0 tion where flow of gas to the burner is prevented to that allowing flow of gasto the burner and vice versa.

Other, further and more specific objectsof this invention will become readily apparent to'persons skilled in the art from a consideration of the following description, when taken in conjunction with the accompanying drawings wherein:

Fig. 1 is an assembly view illustrating in perspective the several parts of thegas cock and locking mechanism. Fig. 2 is a top plan view showing the position of the valve handle when the valve is locked.

but with the resilient member depressed and 40 the plunger and nib turned into the unlock in'g position.

Fig. 6 is a cross section along the line 66 of Fig. 3, viewed in the direction of the arrows. I Fig. 7 is a side elevation having a portion of the device broken away to illustrate the interior thereof. 7 V Fig. 8 isa section along the line 8 8 of Fig. 5 and viewed in the direction of the arrows.

- Fig.9 is a perspective view illustrating a modified form of valve casing. r

In the assembly view shown in Fig. 1 is illustrated a specific embodiment'of my invention. The valve casing l is provided with 55 diametrically.opposite cylindrical proje0' tions 2 and 3 for connectionto the gas supply and gas burner, respectively. The valve caslng is internally bored at 4 and adapted to receive the tapered valve plug 5 which is provided with a transverse bore 6 adapted to register with the bores in the cylindrical projections 2 and 3 when the valve is turned into proper alignment and thus provide a passage establishing communication between the bores in the cylindrical projections 2 and 3. The valve casing 1 has an externally threaded cylindrical portion 7 provided with a small notch 8 and a large notch 9.

V A washer 10 having the vertical or downward projections 11 and 12 g is provided with a central opening 13 of practically the saine'size as the bore 1 of the; valve casing 1 and slips over the tapered portion of the valve plug 5 about the neck 14 until the even surface 15 of this washer abuts against the shoulder 16 of the plug 5. Projecting from the shoulder 16 is theextension 17 which is square at 18, round and threaded at 19 and centrally bored at 20.

A spring 21 fits into the valve plug 5 as more clearly illustrated in Figs.3 and 5. A plunger 22 provided with a nib 23 is slidablypositioned in the bore of the valve plug 5. The;

neck 14, shoulder 16fand extension 17 are notched at 24, 25 and 26 to accommodate the 1111023; A casing cap 27 fits over the threaded cylindrical portion 7 to hold the parts together.

7 the'nut at the 'outer extremity of i the plunger 22. The washer 31 forms a shoulder for the button 33 to rest upon, the latter being fastened to swivel and rotate freely without transmitting such rotating motion to the plunger 22, which can be rotated only by rotation of the valve plug 5. The nut prevents the button 33 from coming off. With the parts assembled, theprojections 11 and 12 of the washer 10 fit into the notches 8 and 9, respectively, and the washer'10 and its projection 12 together withthe notch 9 form an L-shaped passage having the longitudinal leg "36 and circumferential leg 37. The nib 23 projecting from the plunger 22 may be moved longitudinally within the notch 24; of the neck 14 but is constrained by the walls of the notch 9 and the'washer 10 and its projection12 to movement within the L-shaped passage. When the nib 23 is at the tip of the longitudinal leg of the L-shaped passage, it rests between the face 38 of the notch .9 and the face 39 ofthe projection 12 of the washer 10 and in this position the valve plug is prevented from rotation. I prefer to arrange the transverse bore 6 so that it will be out of communication with the bores in the cylindrical projections 2 and 3 when thus locked. In. this locked position, the plunger 22 is pressed upward by the spring 21-as shown in Fig. 3, and the button 33 and the top of the plunger are in the position in-- dicated'by dotted lines in Fig. 7

By-pressing the button 33 downwardly the plunger 22 will also be depressed thereby and 100 when the nib 23 is in the position shown in Fig. 7 it may be turned in the circumferential leg 37 of the L-shaped passage. I prefer to have the circumferential leg slightly longer than a quadrant whichwill permit a 105 one-quarter turn of the valve plug. After this quarter turn, the nib 23 will rest against the face 40 of the notch 9 and the transverse bore 6 of the valve plug 5 will register communication with the bores in the cylindrical 110 projections 2 and 3 of the valve casing and permit flow of gas from the gas main to'the burner. Upon reversing the movement of the valve plug, the nib 23 will slide against" the projection 12 of the washer 10 and when 5 clear of this projection will be automatically forced into the locking position by the action of the spring 21 bearing against the plunger 22 a The plunger 22 is moved downwardly by 120 pressing the button 33 downwardly and inwardly against its outerextremity. This operation is separate and distinct from that of the handle 28 and cannot be accomplished merely by any attempt at axial or circum- 125 ferential movement of the handle. This mechanism requires two distinct manual movements or operations in order to open the gascock, thus greatly increasing the safety against accidental opening. This construc-' 130 tion renders the gas cook proof against opening by tampering with the handle and affords a safety feature hitherto unknown but greatly desired and sought in gas cocks.

The provision of the washer 10 affords much advantage to my device and simplifies the assembly. Whereas, if an L-shaped groove were cut in the body of the casing, as shown in F ig. 9, wearof the casing at the L-shaped groove would generally necessitate replacement of the entire casing, the correspondingwearon-the washer would require replacement only of the washer. Furthermore, the washer may be constructed of greater wear-resistingmaterial than the cas- In using the modification shown in Fig. 9, the washer is dispensed with and, in assembling the parts of the device, the nib 23 passed through the L-shaped groove and attached to'the plunger 22 after this plunger is positioned in the valve plug .5 and the valve plug is inserted in the casing.

The present invention is not limited to the specific details set forth in the foregoing examples which should be construed as illustrative and not by way of limitation, and in 'view of the numerous modifications which may be effected thereinwithout departing from the spirit and scope of this invention, it is desired that only such limitations be imposed as are indicated in the appended claims.

I claim as my invention:

1. A gas cook comprising a tubular casing, a valve plug journaled in the casing and having an inner axial bore and an outward notch extending from said bore, a washer surrounding the valve plug and having a vertical projection, said projection forming Walls of a slotted passage having a .longitudinal leg and a circumferential'leg, a slidable plunger positioned in the bore of said valve plug and having a nib projecting therefrom through the notch of the valve plug into the slotted passage and constrained to move therein and a resilient memberacting upon said plunger, said nib locking the valve plug against turning .whiles'aid nib issheld at the tip of the longitudinal leg of the passage and said nib being adapted to move in the circumferential leg by pressing said plunger against the action of the resilient member and thereby releasing said valve plug for turning in said casing. r

2. A gas cock comprising a tubular casing having a notch at the periphery of one end, a valve plug passing through said end and j ournaled in the casing, said valve plug having an inner'axial bore and an outward notch extending from said bore, a washer surrounding the valve plug and resting upon-the notchedend of the casing, said washer having a vertical projection fitting into the notch of the casing and. forming with the casing a slotted passage having a longitudinal leg and a circumferential leg, a slidable plunger positioned in the bore of said valve plug and having a nib projecting therefrom through the notch of the valve plug into the slotted passage and constrained to move therein and a resilient member acting upon said plunger, said nib locking the valve plug against turning while said nib is held at the tip of the longitudinal leg of the passage and said nib being adapted to move in'the circumferential leg by pressing said plunger against the action of the resilient member and thereby releasing said valve plug for turning in said casing. 7

3; A gas cook comprising a tubular casing having a notch at the periphery of one end, a valve plug passing through said end and journaled in the casing, said plug having an inner bore and an outward notch extending from said bore, a Washer surrounding the valve plug and resting upon the notched end of the casing, said Washer having a projection fitting into the notch of the casing and forming With the casing an L-shaped passage, means for unlocking the valve plug from the closed position and locking said valve plug in the closed position, said means comprising a resilient member at the base of the bore in the valve plug, a slidable plunger positioned in the bore of said valve plug and bearing against said resilient member, a nib projecting from said plunger through the notch of the valve plug into the L-shaped passage and a swivelling button for operating said plunger against the action of said resilient memher.

i. A gas cook comprising a tubular casing having a notch at the periphery of one end, a valve plug passing through said end and journaled in the casing, said plug having an inner axial bore and an outward notch eX- tending from said bore, a Washer surrounding the valve plug and resting upon the notched end of the casing in fixed relation thereto, said Washer having a projection fitting into the notch of the casing and forming with the casing an L-shaped passage having a longitudinal leg and a circumferential leg,- a resilient member at the base of the bore in the valve plug, a slidable plunger positioned in the bore of said valve plug and bearing against said resilient member and a nib projecting from said plunger through the notch of the valve plug into the L-shaped passage and constrained to move therein, said nib locking the valve plug against turning While said nib is held at the tip of the longitudinal leg of the passage and said nib being adapted to be moved into the circumferential leg of the L-shaped passage by pressing said plunger against the action of the resilient member and thereby releasing said valve plug for turning in said casing. p

In testimony whereof I afix my signature.

MAX VYABLICK.

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