US1421591A - Gas burner - Google Patents

Description

EDWIN H. SHU'LER, OF LANSING, AND IWAX C. SHLER, OF CHARLOTTE, IVIICHIGAN.

GAS BURNER.

Application filed August 11, 1921.

To all whom t may concern Be it known that EDWIN H. SHULER and MAX C. SHULER, citizens of the United States, residing at Lansing, county of lngham, and Charlotte, county of Eaton, State of Michigan, respectively, have invented certain new and useful Improvements in Gas Burners, of which the following is a specitication.

This invention relates to improvements in gas burners. Y

The main objects of this invention are:

First, to provide an improved burner having a pilot in which the burner is automatically turned on when an object is placed on the grid above the burner.

Second, to provide an improved gas burner having these advantages which is simple in structure and not likely to get out of repair in use, and further, one which may be substituted for gas burners now coinmonly used in gas stoves, gas furnaces and the like.

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

Ve accomplish the objects of our invention by the devices and means described in the following specification. is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of our invention is clearly illustrated in the accompanying drawing, forming a part of this application, in which:

Fig. I is a plan view of a gas burner embodying the features of our invention, portions of a stove top or grid being broken away and also the Agas supply connections.

Fig. II is a detail view mainly 1n vertical section on a line corresponding to line 2 2 of Fig. I.

Fig. lll is a detail sectional view corresponding to that of Fig. Il with the burner valve open.

Fig. IV is an end view of the Bunsen tube of the burner.

In the drawing similar reference numerals refer to similar parts throughout the several views. f

Referring to the drawing, 1 represents the frame of a gas stove and 2 the top or grid thereof adapted to receive the article to ybe heated, such as a cooking utensil, shown conventionally at 3 in Fig. IH.

The main burner comprises the head t Specification of Letters Patent. v

The invention Patented July 4L, 1922..

Serial No. 491,538.

having` radiating arms 5 provided with a plurality of jet orifices 6. The burner has a Bunsenltube i" adapted to receive gas from the supply nipple 8 which is controlled by the valve 9.

The Bunsen tube has an enlargement 10 at its outer end, a spider 11 being threaded into the tube and supporting the nozzle 12 which is threaded into a central bore in the spider. The nozzle has a valve seat 13. The spider has openings 1a cont-rolled by the shutter 15 rotatably mounted on the spider and secured in its adjusted positions by the screw 16 on the spider engaging the slot 17 in the shutter.

rlhe pilot burner 18 is carried by the pilot burner supply tube 19 which is mounted to reciprocate within an opening 2O in the wall of the burner at the rear of the Bunsen tube and through the bridge-piece 21 projecting inwardly from the spider 11. rlhis supply tube is provided with a valve 22 controlling the nozzle and thereby the delivery of gas to themain burner.

The supply tube has a central orifice 23 which, when the valve is closed, admits gas to the supply tube and supplies the pilot burner. The supply tube is provided with a conical packing member or valve 24 coacting with the seat 25 surrounding the supply tube, thereby preventing the passage of gas when the same is turned on to the main burner, at the same time avoiding packing glands, which would make the structure hard to operate.

A valve actuating member 26 is supported to reciprocate vertically through the main burner and is connected to the pilot burner by link 27 so that when the actuating member is forced downwardly the main burner supply valve is opened. The actuating member is returned to its initial position by means of the weight 28 which is pivoted at 29 to engage the lower end of the stem of the actuating member 26. This weight is also adapted to hold the supply valve to its seat, the weight being provided with an arm 30 adapted to engage a lug 31 on the lower end of the pilot burner as shown in Fig. Il. The weight thus serves the double function of returning the actuating member to its initial position and of holding the supply valve to its seat, thus avoiding the use of return springs.

The nipple 8 is provided with a reduced or weakened portion 32 so that in the event ioo the parts are slightly out of alignment itA will flex to accommodate such condition.

The -parts otour improved v alve are very simple and economical and easily assembled and are not likely to become inoperative or get out of repair. h

Having thus Idescribed our invention, what we claim as new and desire to secure by Letters Patent, is: Y

1. In a structure of the class described, the combination of a grid, a main burner disposed below the grid and provided with a Bunsen tube and a nozzle delivering thereto having a valve seat at its inner end, a pilot burner operatively associated with said mainburner, a pilot burner supply tube carrying said pilot burner and mounted y to reciprocate longitudinally in said Bunsen tube and through the wall at the inner end thereof, said supply tube being provided with a packing valve coacting with a seat in the wall surrounding the tube, and with a nozzle valve at its outer end coacting with the valve seat in said nozzle to control the delivery of gas to the main burner and an inlet opening registering with the nozzle opening when said nozzle valve is closed permitting the passage of gas to the pilot burner, .a valve actuating member mounted on said burner to reciprocate vertically and adapted to be actuated by an Aobject placed on said grid, a link connecting said valve actuating member to said pilot burner, and a weight pivotally mounted on said main burner yfor returning said valve actuating member to its initial position and provided with an arm engaging the pilot burner when the ysaid actuating member is in its normal position whereby said nozzle valve is held in its seat by said weight.

"2. In a structure of the class described, the combination of a grid', a main burner disposed'below the grid and provided with a Bunsen tubel and a nozzle deliverin thereto having a valve seat at its inner en a pilot burner operatively associated with said main burner, a pilot burner supply tube kcarrying said pilot burner and mounted to reciprocate longitudinally in said 'Bunsen tube, said supply tube being provided with a Enozzle valve at its youter end coacting with the valve seat in said nozzle vto control the delivery of Ygas to the main burner and an inlet opening registering with the nozzle opening when said nozzle valve is closed permitting the passage of gas to the pilot burner, a valve actuating member mounted on said yburner to reciprocate vertically and adapted to be actuated by an object placed on said grid, a link connecting said valve actuating member to said pilot burner, and a weight pivotally mounted on said main burner for returning said valve actuating member to its `initial position and provided with an aim Vengaging' `the pil-ot burner when the said actuating member is in its normal position whereby said nozzle valve is held in its seat by said weight.

3. In a structure of the class described, the combination of a grid, a main burner disposed below the grid and provided with a Bunsen tube and a nozzle delivering thereto having a valve seat at its inner end, a pilot burner operatively associated with said main burner, a pilot burner supply tube carrying said pilot burner and vmounted to reciprocate longitudinally in said Bunsen tube and through the wall at the inner end thereof, said supply tube being provided with a packing valve coacting with a seat in the wall surrounding the tube, and with a nozzle valve Yat its outer end coacting with the valve seat in said nozzle to control the delivery of gas to the main burner Yand an inlet opening registering with the nozzle opening when said nozzle valve is closed permitting the passage of gas to the pilot burner, a valve actuating member mounted on said burner toreciprocate vertically and adapted to be actuated by an object placed on said grid, a link connecting said valve Y actuating member to said pilot burner, and a weight pivotally mounted on said main burner for returning said valve actuating member to its initial position. i

et. ln a structure of the class described, the combination of a grid, a. main burner disposed below the grid and provided with a Bunsen tube 'and a nozzle delivering thereto having a valve seat at its inner end, a pilot burnei' operatively associated with said main burner, a pilot burner supply tube carrying said pilot burner and mounted to .reciprocate longitudinally in said Bunsen tube, said supply tube being provided with a nozzle valve at its outer end coacting with the valve seat in said nozzle to control the delivery of gas to the main burner and an inlet opening registering vwith the nozzle opening when said nozzle valve is closed permitting the passage of gas to the pilot burner, a valve actuating member mounted on said burnerA to reciprocate .vertically and adapted to be actuated by an object placed `on said grid, a link connecting said valve actuating member to said pilot burner, and a weight pivot-V ally mountedion saidL main burner for returning said valve actuating member to its initial position.

5. In a structure of the class described, the combination of a grid, a main'burner disposed below the grid and provided with a Bunsen tube and a nozzle delivering thereto having a valve at its inner end, a pilot burner operatively associated withsaid main burner, a pilot. burner supply tubecarrying said pilot burner and mounted to reciprocate vlongitudinally in said Bunsen tube through the wall at the inner end thereof, said supply tube beingv provided with a nozzle valve at its outer end coacting with the valve seat in said nozzle to control the delivery of gas to the main burner and an inlet opening registering with the nozzle opening when said nozzle valve is closed permitting the passage of gas to the pilot burner, said burner tube also having a packing valve coacting with a seat in the wall surrounding Ithe tube when the nozzle valve is open, a valve actuating member arranged to be actuated by an object placed on said grid, operating connections for said valve actuating member tosa-id pilot burner tube, and a Weight pivot-ally mounted on said main burner for returning said valve actuating member to its initial position and adapted when in its normal position to hold said nozzle valve to its seat.

6. In a structure of the class described, the combination of a grid, a main burner disposed below the grid and provided with a Bunsen tube and a nozzle delivering thereto having a valve seat at its inner end, a pilot burner operatively associated with said main burner, a pilot burner supply tube carrying said pilot burner and mounted to reciprocate longitudinally of said Bunsen tube, said supply tube being provided with a nozzle valve at its outer end coacting with the valve seat in said nozzle to control the delivery of gas to the main burner and an inlet opening registering with the nozzle opening when' said nozzle valve isv closed permitting the passage of gas to the pilot burner, a valve actuating member arranged to be actuated by an object placed on said grid, operating connections for said valve actuating member to said pilot burner tube, and for returning said valve actuating member to its initial position adapted to hold said nozzle valve to its seat.

7 In a structure of the class described,

the combination of a grid, a main burner disposed below the grid and provided with a Bunsen tube and a nozzle delivering thereto having a valve seat at its inner end, a pilot burner operatively associated with said main burner, a pilot burner supply tube carrying said pilot burner and mounted to reciprocate longitudinally in said Bunsen tube through the wall at the ilnner end thereof, said supply tube being provided with a nozzle valve at its outer end coacting with the valve seat in said nozzle to control the delivery of gas to the main burner and an inlet opening registering with the nozzle opening when said nozzle valve is closed permitting the passage of gas to the pilot burner, said burner tube also having a packing valve coacting with a seat in the wall surrounding the tube when the nozzle valve is open, a valve actuating member arranged to be actuated by an object placed on said grid, operating connections for said valve actuating member to said pilot burner tube, and for returning said valve actuating member to its initial position adapted to hold said nozzle valve to its seat.

8. A gas burner comprising a Bunsen tube, a spider threaded into the `outer end of said Bunsen tube and having a threaded central bore and an inwardly projecting bridgepiece, a nozzle threaded into said spider and having a valve seat in its inner end, a valve member having a valve at its end reciprocating in said bridge piece to coact with said valve seat, an air shutter mounted on said spider, and a nipple threaded into said nozzle, said nipple having a weakened portion permitting flexing thereof.

In witness whereof, we have hereunto set our hands and seals.

EDWIN I-I. SHULER. [Ls] MAX C. SHULER. [Ls]

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