US981844A - Burner-controller. - Google Patents

Description

J. W. BEARING. BURNER CONTROLLER.

APPLICATION FILED 001114, 1908.

Patented Jan. 17, 1911.

- UNITED STATES PATENT o F eE.

JOSEPH w. BEARING, F Los ANGELES, CALIFORNIA, ASSIGNOR'OF ONE- IBULLIS, or LOS ANGELES, CALIFORNIA.

HALF TO w. s.

BuRNER-coNTnoiLER.

Specification of Letters Patent.

-trollers, .Of which the following is a specitication.

This invention relates to automatic cutoffs for burners, and the main object of the invention is to provide a device of the character described, which may be" used with,

burners which burn gasolene or other fuel, which will automatically shut-ofi' the flow of fuel to the burner should the burner become extinguished. l, The burner which is referred to may consist of the regular burner or it maybe the pilot light. In the present case I have shown the device as apuiied to a water heater and the automatic cut-off device .is controlled by the heat from the pilot light, whereby if the pilot becomes 'extinguished, and the regular burner should beturned on by a person who did not know that the pilotlight was extinguished, no gas will escape from the regular burner because the device will automatically shut a. valve .in the supply pipe for the regular burner if the pilot light becomes extinguished.

Referring to the drawingsz- -Figure 1 is :1 side elevation of the invention applied to a water heater, the burner of which is shown.

'in section Fig. 2 is an enlarged side elevation of the invention, part of the supporting bracket-and thermostat being shown in section. Fig. 3 is a section on line a0 'm Fig.2. Fig. 4 is a section on line w*-w Fig. 3'. Fig. 5 is a view similar to Fig.3. showing a modified construction for actuating the valve ,Fig. 6 is asection on line w'w Fig. 5.

1 designates the header for the burner which connects with a series of burners 2 which collectively form what may be termed the regular burner. Fuel is suppliedto the. burner through a pipe 3 which connects with v the header '1. i

4 designates the coil of pipe'which is arrange above the regular burner, in which coils the water is heated as it circulates therethrough. 1

5 designates a pilot burner which is supplied by a pipe 6, the latter connecting with pipe 3 at a point above the' main valve 7 so that the pilot is always supplied with fuel.

The pilot pipe 6 could be in the county of Los Angeles by a spring instead of a weight.

\ tance from the burner, it is not known Patented Jan. 1?, 191i.

Application filed October 14,.1908. Serial No. 457,727.

connected to the pipe 3 below the valve 7-, if desired. As slrown in Fig. 3, the main valve 7 has asquare stem 8 on which is a valve lever 9 carrying a weight 10 at one end and being provided with an antifriction roller 11 at its other end. The roller 11 is gaged by a hook 12 formed end of a thermostat lever 13 normally enon the upper which is pivoted at 14 to a bracket 15, the latter extending. down from the casing of main valve 7 and, preferably, being cast integrally therewith; A compression spring 16 at the lower endof lever 13 serves to hold the hook 12 in engagement with roller 11. The lever 13 is controlled by a thermostat which consists of an outer tube 17 screwed to the lower end ofbracket 15. Within the tube 17 is a rod 18, the outer end of which is secured to the tube 17 and the inner end of rod 18 bears against the lower end of thermostat lever 13. As shown in Fig. 1, the thermostat is so arranged that it receives heat from the pilot 5, andthe tube l7 and rod 18 have dif-- ferent ratios of expansion, such/ that when the pilot is burning, which is its normal condition, as' it is intended to burn perpetually in this type of heater, the tube 17 is expanded so that the rod 18 barely rests against the lever 13. If the pilot becomes extinguished for any reason, the tube 17 cools and moves rod-'18 to the left which swings the upper end of lever 13 to the right and disen ages hook 12 from roller 11, thereby permitting weight 10 to close valve 7 which prevents the passage of any gas to the regular burner. In this type of burner, the gas is turnedonto the regular burner automatically whenever a person draws water, and as the water is usually turned on from a room located at a diswhether the pilot is burning or not. If the pilot burning, as it should be, the large burners will become automatically ignited and the water will run hot from the faucet. Should the pilot have been extinguished the regular burner'will'not be lighted and the water will run cold from the faucet, durin which time gas willv escape in large quantitles from the an explosion would be apt to occur, all of which is avoidmediately shut the main gas valve 7 should the'pilot become extinguished, and as gas burner, and should a person attempt, to relight the pilot.

- ed with the-present device which 'acts'to i mprojecting valve 7 is actuated by end of which, as shown in part of the upper portion of the bracket 15,

eing cast, preferably, integrally therewith, while the drum -21 is revoluble' on the valve stem 8, but the drum is adapted to rotate the valve through the'medium of a lug 30jwhich presses against-a handle 29 on the'valve, as will be described. The drum 21 has a notch which is normally engaged by a flanged pin 23, being held in position by a compression spring 24:. The pin 23 has a notch 25 which is engaged by the upper Spring 16 is not employed in this form. When the tube 17 cools,'u'pon the pilot being extinguished, the rod 18 swin s the upper end of lever 13 to the right, isengages the pin-23 from drum 21, whereupon the spring 20 rotates the drum in the, direction of the arrow, Fig. 6, and closes the valve. The valve, casing 26 has a segmentalcavity 27 through which a pin 28 sweeps, the latter as a stop .to limit the valve to one-quarter turn. A handle 29 is securedto the valve and bears against the lug 30 on the drum 21 which actuates the-valve through the mediu'm of the handle 29, as before described,

end of the lever 13.

from the valve stem and actingwhen the drum is released, but which allows the valve to be closed'by moving handle 29 to the left away from lug,30 without actuatin the drum 21. I

hat I claim isj:-

In combinationfa valve casing having a segmental cavity therein and a bracket extending downwardly therefrom, a valve stem, a pin on said valve stem projecting into the segmental cavity in the valve casing, a valve lever mounted on said valve stem having an arm extending outwardly therefrom, a thermostat lever pivoted to the lower end ofsaid bracket and having a hook at its upper end for engaging the arm on the valve lever, a perforated tube secured to the lower end of said bracket, a rod in said tube secured thereto at the outer end of the 2 tube and having its inner end extending through the inner with said thermostat lever below the pivot of said lever elastic means for holding the lower end 0% said thermostat lever against the inner end of said rod, and means for rotating the valvelever when the arm on said valve lever is released from engagement with the hook on the thermostat lever.

In testimony whereof, my hand at Los Angeles, California, this 9th day of October 1908. I

. JOSEPH W. DEARING. In presence oi G. T. HAoKLnY';

FRANK L. A; GRAHAM.

end of the tube to coact.

I have hereunto set l

Images