US1376909A - Walter j - Google Patents

Description

SAFETY DEVICE FOR GAS RANGES. APPLICATION FILED NOV-12 1920.

I 1,376,909. 7 Patented May 3, 1921.

IN VEN TOR.

WALTER a. WOIDRASKA,

PATEN T OFFICE.

OF NEW YORK, N. Y.

SAFETY DEvIcE FOR GAS-RANGES.

Specification of Letters Patent. 7 i

I Patented May 3, 1921.

Application filed November 12, 1920. Serial No. 423,651.

To all whom it may concern:

Be it known that I, WALTER J. lVoDEAsKA, a citizen of the United States, residing at New York, in the county of Bronx and State of New York, have invented certain new and useful Improvements in a Safety Device for Gas-Ranges, of which the following is a specification.

This invention relates to safety valves for gas burners and more particularly to an attachment to be mounted on the burner of a gas stove or ran e, whereby the gas may be shut off after t e same has been extinguished.

It is well known in the culinary art, that the contents of a receptacle, while cooking on a gas range will overflow and boil over, thus causing the gas flame to be extlnguished while the gas continues to flow. This invention contemplates the provision of means for causing the gas to be immediately shut off so that the danger of asphyxiation will be eliminated.

Other objects of the invention will appear upon consideration of the following detail description and accompanying drawings, wherein Figure 1 is a side elevation, partly in section, showing the invention applied to an ordinary as burner,

.Fig. 2 1s a transverse section taken approximately on the line 2-2 of Fig. 1, showing the valve in closed position,

Fig. 3 is a perspective view of the safety valve detached.

Referring to the drawing by numerals, the burner 1 is of the type generally used on gas ranges and is connected by a pipe 2 to the air chamber 3. The gas jet 4 extends into the air chamber 3 from the gas cook 5 which is opened and closed by the manipulation of the handle 6. The handle 6 has its hood portion 7 mounted on the valve shaft 8 in the usual manner but is normally freely rotatable on the shaft. The shaft, however, is provided with a notch 8 whlch is adapted to be engaged by one end of a push button 9 normally held out of engagement by a spring 10 so that the shaft 8 can not be turned until the push button 9 1s pressed inwardly. This structure prevents children from turning the gas on by merely turning the handle 6 and will also prevent accidental or casual turning of the gas cook by persons working around the gas range.

Disposed beneath the gas burner 1 1s a tray or shallow pan 11 which is mounted on a pivoted arm 12, the pivot 13 being carried by a supporting member 14 fixed in any suitable way to the burner. A weight 15, adjustably mounted on the arm 12 may be arranged to balance the pan 11 properly beneath the burner l, and the arm 12 is provided with an upstanding finger 16 which is in a position to engage one end of a trip lever 17 pivotally mounted as indicated at 18. This lever is in a position to engage a trip rod 19 formed by the right angularly turned end of a shaft 20 which extends transversely through the air chamber 3 and which carries a valve plate 21 adapted to swing into and out of engagement with the end of the gas jet 4 whereby the gas opening therein may be opened and closed. A spring 22 is mounted in position to normally maintain the valve plate 21 in closed position so that when the trip lever 17 is engaged with the rod 19 there will be a tension on the valve plate 21 by virtue of the spring 22.

lVhen a cooking vessel is upon the gas plate or burner I, and the contents of the receptacle boils over, the pan 11 will catch a portion of the liquid causing it to be swung on the pivot 13 whereupon the finger 16 will-cause the trip lever 17 to be disengaged from the rod 19 thus releasing the latter and permitting the spring to force the valve plate 21 into closed position over the opening in the gas jet whereupon the gas will be'immediately out 01f and will not begin to flow again until the apparatus has been reset.

Minor changes may be made in the details of construction without departing from the'spirit of the invention or the scope of the claims hereunto appended.

What I claim is 1. In combination with a gas burner having an exposed gas jet, of ashallow pan pivotally mounted beneath the burner, a closure valve normally open and adapted to engage theend of the said gas jet to close the same, and means connected to the piv-- otally mounted pan and to the said valve member whereby the valve member may be closed over the end of-the gas jet when the pan is depressed beneath the burner.

2. In combination with a gas burner having an air chamber, and a gas jet leading into the air chamber, a valve mounted in the air'chamber and adapted to close the gas et, means to maintain the valve in normally open position, a pan pivotally mounted beneath the burner and adapted to swing downwardly, and means connected to the said pan and to the said valve operating means whereby the valve may be operated when the pan is depressed.

3. In combination with a gas burner, an air chamber and a gas jet leading into the air chamber, of a pan pivotally mounted beneath the gas burner, a spring pressed valve mounted in the air chamber and adapted to close the gas jet but normally disposed in open position, a trip finger engageable with the said valve to normally maintain it in open position, and means connected with the said pan and adapted for engagement with the trip finger to release the latter whereby the spring pressed valve may be turned into a position to close the said gas jet.

In testimony whereof, I have aflixed my signature in the presence of two witnesses.

lVALTER J. VODRASKA. Witnesses VINCENT ovAK, FREDERICK LANDI.

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