US1692421A - Valve for regulating gas flames - Google Patents

Description

Nov. 20, 1928.

G. SCHLUSSELBURG VALVE FOR REGULATING GAS lFLAMES I original Filed June 8, 19@

Patented Nov.V 20, 1928.

UNITED STATES GEORGE sCHLUssELBUnG, or CHICAGO, ILLINOIS, AssIGNon/ To HALE, OL' LONDON, ENGLAND.

PATENT OFFICE. g

VALVE FOR, BEGULAT'ING GAS FLAMES.

Application nied June 8, 1926, Serial No. 114,431, and in Great Britain .Tune 8, 1925. Renewed August 17,

The present invention relates to safety valves or cocks for regulating gas ames of the type which, in addition to the main valve or cock, provides supplemental lmeans for the passing of a small amount of gas required 1n lighting the burner. In devices of this kind, it some times happens that the ame 1s accidentally extinguished. by drafts or by the boiling over ofliquid, and 1n the absence of means for automatically shutting OE the valve, the gas will continue to escape.

The present invention is directed to an automatically controlled supplemental cock which is so arranged-that it may be momentarily vturned by hand toopenposition for lightin the flame and thereafter released and restored to its normal closed position, the gas supply bein thereupon maintained by the actionof a iaphragm and associated means which serve to unseat the plug of the supplemental cock thereby affording an open passageway for the gas supply so long as the flame remains lighted, but which will automatically close such passageway upon an accidental extinction of the ame and a consequent cooling of the regulator which controls the diaphragm.

The invention also is directed toa co-ordination of the automatic controlling means with-the main valve plugin such a way as to permit both the main and supplemental valves to be rotatedby a single hand wheel,

' either separately or in unison as required in the proper functioning of the. device. v

Further objects and details will appear from the description of the invention in connection with the accompanying drawings whereinv Figure 1 is a plan view of the burner and safety cock, the operating disk of the latter being removed; and

Fig. 2 is a side view showing the cock in longitudinal section.

The cock consists essentially of a main plug 1 of the usual tapered formation provided with a cross bore l and adapted to be turned ,for ordinary regulating purposes by the rotation of a disk 2 which in turn is rotated by engagement with a superposed disk 3, a section of the rim of which is cut away, as shown in Fig. 1, to afford shoulders or abutments 4 and 5 respectively, either one of which is adapted to kengage with a projecting lug 6 0n the disk 2. This arrangementyas shown,

affords a free movement of about 90 the disk 3 between the shoulders-4 and 5.

The disk 3 is mounted upon and turns with FRANCIS EDWARD The spindle 7 carries at its upper end an'` y operating disk shaped fiangedcap 8 which constitutes a hand wheel ,for the rotation of both th main plug land the supplemental plug 9, which lattery is located and seated Within the main plug and is of conical formation and provided with a cross bore 9a which, as shown in Fig. 2, will normally maintain a position transverse to the bore through the main plug. The supplemental plug 9 is maintained in its seate position by a spring 10, and is provided with two pins 11 which enga e with corresponding recesses 11a in the spin le.

' The spindle is encircled by a coil spring 12, the inner convolution of which is secured to the spindle. and the outer convolution of which bears against the lug 6 on the disk 2, the arrangement being such that when the hand wheel 8 is rotated in a clockwise direction through a quarter of a revolution, the

s ring will be tensioned. This limited rotation of the hand wheel serves to turn the sup plemental plug sufficiently to bring its cross bore 9a into registry with the bore through the main plug which admits a small amount of gas to the burner 13 suicient to light the same. Adjacent to the burner 13 is a regulator 14 in the form of a tubular loop provided with a tubular stem 14a in communication with a chamber 15 formed on the interio-rof a corrugated diaphragm 16 which carries a stem 17 extending axially through the lower end of the main plug and bea-ring against the lower end of the supplemental plug. When the gas is ignited it serves to heat the air trapped in the regulator 14:, the expansion of which causes'the diaphragm to lift the pin 17 which in turn lifts the tapered'supplemental plug from its seat within the mamplug, thereby establishing open communication in the gas line' around the base' of the sup lemental plug which serves to provide a. suliicient flow of gas to maintain the flame from the burner.

When the supplemental plug has been given a preliminary turning movement to bring its cross bore 9 into. register with the gas passage, the burner may be lighted, and if the hold on the hand wheel is maintained for a short period of time, the trapped air in the regulator will cause a swelling of the diaphragm 16 which will lift the pin 17 and with it the supplemental plug, so that the latter Y will be unseated and thus permit a continued cient to heat the regulator 14;, the supplemental plug will be held unseated. If, however,

. the llame should be accidentally extinguished,

the cooling of the trapped air in the regulator will cause a collapse of the diaphragm with a consequent dropping of the pin 17, which permits the supplemental plug to reseat itself under spring pressure and thus cut off the last remaining supply of gas.

The stem of the regulator terminates in a threaded tube 18 which passes through an internally threaded bushing 19 fitted with a lock nut 2O which bears against the base of the diaphragm casing 21, which arrangemenirpermits the diaphragm with its pin 17 to be vertically adjusted within the casing to the degree necessary to properly bear against the lower end of the supplemental plug.

The main plug can be turned by continued rotation of the hand wheel after the free motion has been'taken up and the shoulder 4; on the disk 3 has been brought into engagement with the lug or projection 6 which, of course, permits the flow of gas through the main line to be regulated or completely cut off as may be desired, but such turning adjustment of the main plug will in no way effect the functioning of the automatic cut of' devices which more particularly constitutes the subject matter of the present invention.

The device as a whole is one which is self contained and which cannot be accidentally misadjusted, and the provision of the automatic mechanism of the present invention in n-o way interferes with the easy and convenient operation of the main lplug which continues to subserve its function in regulating or controlling the size of the llame at the burner. t

I claim:

l. In a device of the class described in combination vwith a burner and gas passage, a main plug for regulating the flow of gas through the gas passage, a supplemental plug provided with a cross bore and rotatably mounted and normally seated within the main plug and extending across the gas passage for regulating the flow of gas for lightlng purposes, means associated with both mam and supplemental plugs for imparting rotation to the supplemental plug by guished, and means for regulating the extent i of the lifting movement impartedto the supplemental plug by the thermostatic means, substantially as described.

2. In a device of the class described in combination with a burner and gas passage, a main plug for regulating the flow of gas through the gas passage, a. supplemental plu g provided with a cross bore and rotatably mounted and normally seated within the main plug and extending across the gas passage for regulating the How of gas for lightin purposes, means associated with both mam and supplemental plugs for imparting rotation to the supplemental plug by a limited degree of movement and rotation to the main plug by continued movement, and thermostatic means associated with the burner when the ame is maintained for lifting the supplemental plug froml vits seat in the mainplug to maintain the flow of gas, and means operable'to effect reseating of the supplemental 'plug when the flame is ,extinguished` said thermostatic means comprising a tubular member having ,one of its ends located in proximity to the burner and communicating at its other end with a. diaphragm provided with a pin positioned to impart an axial thrust to the supplemental plug, substantially as described.

3. In a device of the class described in combination with a burner and gas passage, a main plug located transversely of the gas assage and provided with a bore adaptel to register therewith, a supplemental plug located and normally seated within the main plug and extending transversely of the gas passage provided through, the bore of the main plug, said supplemental plug having a bore normally extending transversely to the bore in the main plug, a. spring for holding the supplemental plug normally in seated relation to the main plug, a thermostatic member in the form of a tu e having one end in proximity to the burner-and communieating with the interior of a diaphragm at its other end, an extension carried by the diaphragm and positioned to impart an axial thrust against the supplemental plug to unseat the same and open the gas passage around the end thereof, and means for rotating each of said plugs, said means com prising a hand wheel adapted when initially turned to rotate the supplemental plu to bring its bore into registry with the bore of the main plug and adapted by continued rotation to rotate the main plug, substantially as described.

4. In a device of the class described, in combination with a gas passage and burner, a main plug for controlling such passage, a rotatable supplemental plug adapted When in normal position to control the flow of gas through the gas passage, means for turning the supplemental plug to open position to admit the lloW of gas for lighting purposes, and thermostatically controlled means associated with the burner for shifting the supplemental plug from normal position to prevent the supplemental plug from closing the gas passage while the burner is lighted irrespective of the rotative adjustment of' the supplemental plug With respect to the gas passage and means for effecting the restoration of the supplemental plug to its normal position upon extinction of' the flame, substantially as described.

5. In a device of the class described, in combination With a gas passage and burner, a main plug for shifting such passa-ge, a rotatable supplemental plug located Within the main plug and adapted when in normal position to control the flow of gas through the gas passage, means for turning the supplemental plug to open position to admit the flow of' gas for lighting purposes, and thermostatically controlled means associated with the burner for shifting the vsupplemental plug from normal position to prevent the supplemental plug from closing the gas passage While the burner is lighted irrespective of the rotative adjustment of the supplemental plug With respect to the gas passage and means for effecting the restoration of the supplemental plug to its normal position upon extinction oi the flame, substantially as described.

6. In a device of the class described, in combination with a gas passage and burner, a' main plug extending transversely of the gas passage, a supplemental plug extending transversely of the gas passage and adjustable both rotatively and. transversely of' the gas passage, means for rotating the supplemental plug to regulate the admission ol gas for lighting purposes, and a thermostatic member associated with the burner and adapted when heated by the flame to impart to the supplemental plug an opening movement transversely ot the gas passage irrespective of the rotative adjustment of the supplemental plug and means adapted When the flame is extinguished to effect restoration ot the supplemental plug to closing transverse relation to the gas passage, substantially as described.

7. Ina device of the class described, in combination withagas passage and burner,amain 'lo 'i heated by the flame to impart to the supplemental plug an opening movement transversely of the gas passage irrespective of the rotative adjustment of the supplemental plug and means adapted when the flame is extinguished to effect restoration of the supplemental plug to closing transverse relation to the gas passage, substantially as described. 8. In a device of the class described, in combination With a gas passage and burner, a main plug extending -transversely of the gas passage, a supplemental plug extending transversely of the gas passage and adjustable both rotatively and transversely of the gas passage, means for rotating the supplemental plug to regulate the admission of gas j for lighting purposes, a thermostatic member associated With the burner and adapted when heated by the flame to impart to the supplemental plug an opening movement transversely of the gas passage irrespective of the rotative adjustment of the supplemental plug and means adapted when the flame is extinguished to efl'ect restoration of the supplemental plug to closing transverse relation to the gas passage, and means for regulating the extent of transverse movement imparted by the thermostatic member to the supplemental plug, substantially as described. 9. In a'device of the class described, in combination with ,a gas passage'and burner,

a main plug extending transversely ofthel gas passage, 4a supplemental plug located Within the body of the main plug and extending transversely of the gas passage and adjustable both rotatively and transversely of the gas passage, means for rotating the sup- \kplemental plug to regulate the admission of gas for lighting purposes, a thermostatic member associated With the burner and adapted when heated by the flame to impart to the supplemental plug an opening movement transversely of the gas passage irrespective of the rotative adjustment of the supplemental plug and means adapted When the flame is extinguished to effect restoration of the supplementall plug to closing transverse relation to the gas passage,.and means for regulating the extent ot transverse movement imparted by the thermostatic member to the supplemental plug, substantially as described. y

.GEORGE sCHLUssELBURG.

Images