US993111A - Safety gas-burner. - Google Patents

Description

Patented May 23, Y1911.

4.. ma F INVENTOR C. SCHNEIDER.

SAFETY GAS BURNER.

APPLICATION FILED JUNI: 15, 1909.

WITNESSES CARL SCHNEIDER, OF JERSEY CITY HEIGHTS, NEW'JERSEY.

SAFETY GAS-BURNER.

Specification of Letters Patent.

Application led .T une 15, 1909.

Patented May 23, 1911. Serial No. 502,280.

To all whom 'it may concern:

Be it known that I, CARL SCHNEIDER, a citizen of the United States, residing in Jersey City Heights, county of Hudson, and State of New Jersey, have invented certain new and useful Improvements in Safety Gas-Burners, of which the following is a specification.

cheap, and operates promptly so as to save the loss of even a small quantity of as.

The' accompanyin drawings il ustrate embodiments of the invention.

Figures 1 and 2 are vertical side and front elevations of the burner. Figs. 3 and 4 are vertical sections of the same burner in the -closed and open positions of the valve reas shown or with the valve seat and other passages 9formed in a separate piece for convenlence.

The valve seat C is in a substantially vertical plane. The gas asses from the base vof the tube through e passage D to the valve chamber E and thence out by Way of the passage F. The valve G also -stands in an approximately verticalposition. It is a free or floating valve with its lower ed e resting upon the bottom of the chamber the chamber and valve being preferably cilC cular, and the chamber being closed by a removable plug H also circular as indicated 'l :Nin Fig. 1, and which is preferably held in place by friction although ity may be fas- ;tened in any suitable way.

' The valve opens with the pressure of the fugas and is given an additional o ening orce by formin it -with a weight on its outer face, and y making its edge beveled so that it rests upon a thm smooth line in the rear of its inner face, and thus tends always to fall outward,'and closes perfectly.

The valve is normally prevented from moving in the opening direction by means Vof a pin K passing through the plug H and held against accidental loss by a small head on its inner end. In its outer position the pin K permits the valve to move unobstructedly. The pin is normally held in, however, so that its end presses the valve toward its seat, the pin engaging the outer face of the valve as shown in Fig. 3. The

in is under control of a thermostat such or example, as the bi-metallic bow L fixed at one end to the side ofl the burner, by means of a screw M which fastens the end of the thermostat in a suitably shaped recess or socket in the burner tube, so that the thermostat is held rigidly at this end. The thermostat passes up and over t-he tip of the burner, being slotted at the top to avoid interference with the flame, and its free end passes down upon the opposite side of the burner toward the pin K. It is this free end of the thermostat which moves the pin K inland out and so operates or releases the va ve.

The connecting device between the thermostat L and the pin K is a frictional device Which causes`the very first contracting or expanding movement to be transmitte to the valve. After the first movement of the thermostat sufficiently to move the pin K its full distance there is always a considerable continued movement of the thermostat, and the frictional connection ermits this continued movement of the t ermostat 'without necessitating a continued Y movement of the pin. On the return movement of the thermostat, it first moves the pin to its opposite tinues to the llmit o movement of the thermostat. Thus a very small movement of the in is. all that is necessary, and the lengtlh of time during which the thermostat must continue to expand or contract in orderto shift the pin from one position to another, can be made accordingly small. At the same time ample room for the flow of as is provided by the use of a float valve witi a large orifice. The frictional connection shown comprises a sprin lN fastened upon a stud O on the free eng of the thermostat, and having a pair of arms which embrace the pin K frictionally.

osition and then con- With this construction it is not necessary to hold the valve open in order to light ,the gas. A match held at thetip will heat the thermostat in about the length of timefreuired to light a candle, sufficiently to withraw the pin K and permit the gas to How and to light. The heat of the gas expands the thermostat further, but it continues to grip the pin K through the frictional device N, and within 'a f ew seconds of the disappearance of the iiame the thermostat will have contracted suiiiciently to cui` off the gas.

Various modifications may be made in detail and in the arrangement of the parts, without departing from the invention.

1. A safety gas burner having a valve, a member controlling saide valve and a thermostat frictionally connected to said member soas to actuate theA same and to move relatively thereto when expanded or contracted beyond the distance corresponding to the limit of movement of said member', said valve being adapted to be opened automatically by the pressure of the gas upon the l'heatin of the thermostat. 5

2. A sa ety Agasfburner having a valve seat and a valve G standing in an approximately vertical plane and weighted assist its 4opening movement, a substantially horizontal pin K extending outside of the burner and having its inner end Jin line with said valve, and thermostatic means for moving said 'pin inward toA close the valve when the light is out.

3. A safety gas burner having ra valve seat andv a valve G standing in an approximately vertical plane and weighted to assist its opening movement, a substantially horizontal pin K extending outsidel of the burner and having its inner end in line with 'said valve, a thermostat, and a rictional connecting device N below said thermostat and engaging said pin for moving said pm inward to close the valve or outward to open it, and permitting an excess movement of the thermostat beyond that of the pin. l

In witness whereof, I have hereunto signed my name in the presence of twosub-

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