US2077890A - Gas range - Google Patents

Description

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GAS RANGE :....zzzvf Filed Oct. 2, 1929 u ononooo a annoso s o A. u e

- April 2o, 1937.

April zo, 1937. c. E. METHUDY 2,077,890

v l GAS RANGE Filed Oct. 2, 1929 2 Sheets-Sheet 2 lig-@- 'Patented Apr. 20,l 1937 UNITED STATES GAS RANGE can E. Methudy, st. Louis, M0., assignnf; by mesne assignments, to The Cleveland Trust Company, Cleveland, Ohio, a corporationof Ohio Application october z, lozaseriai No. 396,724

1 Claim.

This invention relates to gas ranges.

An object of the invention is to provide ai construction and arrangement in a gas range whereby the gas from the gas supply pipe is conducted to the gas manifold of the range through a valve which controls passage of gas from the supply pipe to a pilot. light device and also to the manifold, which supplies gas to the several burners of the gas range.

Another object of the invention is to provide the construction and arrangement of the type and character mentioned having thermostatic members in connection with and controlling the valve that controls the passage of gas to the pilot light burner and to the manifold whereby said valve will be automatically closed when the flame at the pilot light burner becomes extinguished and the thermostatic device becomes unheated.

VAnother object of the invention is to provide a gas range embodying'the improved construction and arrangement of parts hereindisclosed, reference being made to the accompanying drawings, in which-' Fig. 1 vis a plan view of a portion of the gas range showing a cluster of gas burners and a pilot light burner and valve therefor controlling the passage of gas to the `manifold of the range. Fig. 2 is an enlarged vertical sectional view of the pilot light device and valve approximately on the line -2-2 of Fig. 1.

In the embodiment of the invention shown, a cluster of gas burners I is assembled in appropriate relationship within a burner box frame 2. The oven of the range is equipped with a gas burner 3 having a gas inlet device d. The

burners I have gas inlet devices 5.

The main gas supply pipe E is mounted in the support 1 in connection with the burner box frame and has a pipe extension 8 extending forl wardly toward the center of the cluster of Aburners Iy to connection with a valve housing which encloses a valve that controls passage of gas to the pilot light burner and also controlsv gas to the gas inlet device 4 leading to the oven burner 3.

A housing I4 for enclosing the flame of the .pilot light burner is located near the center of the clusterof burners I and has tubular arms 5 I5 open throughout their length and extending toward and terminating adjacent to the burners I, so that gas being discharged from said burners I will enter the tubes I5 and be conducted thereby to the housing l4- and therein ignited by the 10 pilot light flame. As a result of the ignition of the gas in the housing I4 and tubes I5, fa pressure Wave of combustion 4is formed in said tubes I5 with the result that the gas being discharged from the tubes of the burners I is 15 ignited. A tube I6 leads to the burner 3 for the same purpose; and a tube I1 may be provided for a special burner Ia.

'Ihe pipe 8 has communication with the pipe II through a valve housing. The valve housing 20 comprises a bottom wall I8 and a cylindrical wall I9 rising from the wall I8. The walls I8 and I9 form an enclosure or housing having at one end a tubular internally threaded lateral extension 20 forming a gas receiving chamber 25 2i and screwed on to the end-of the pipe 8. The opposite side of the valve housing has a laterally extended internally threaded tubular portion 22 i into which the end of the pipe I I is screwed.

Within thepvalve housing an annular wall 23 30 rises from integral union with the bottom wall I8 .and encloses a. space 24 to which gas is admitted from the receiving chamber 2l .through an inlet 25. The wall I9 has adownward extension 26 curving to integral union with the upper portion 35 of the wally 23, so that it is impossible for the gas to pass from the receiving chamber 2| otherwise f than through the port 25 and through the enff closed space 24, and thence upwardly across the valve seat 21 on the upper edge of the wall 23. 40

A valve 28 is attached to a support 29 mounted and guided in the space formed by the wall I9 and is movable from and to position on the valve seat 21. When the valve 28 is seated on the valve seat 21 it is impossible for gas to pass 45 from the pipe 8 to the pipe I I; and when the valve 28 is raised from the valve seat 21 the gas may freely pass from the pipe 8 to the pipe I I and thence to the manifold 9. A retractile spring actuator 30 is connected with the projection 3| 50 from the valve support 29 and with a rigid member 32 and operates to close the Valve.

When the valve 28 is raised and held away from the valve seat 21 the gas may pass -around the support 29 into the chamber 33 enclosed by the 55 wall I9 above the support 29. A leak proof construction is provided, comprising'a diaphragm 34 having its outer edge clamped in connection with the wall i9 by a clamp 35. A burner jet tube 36 extends for sliding movements in a boss 31 in connection with the clamp 35 and opens into the chamber 33 through a tting 38 having ports 39 therein. from the chamber 33 to the tubular burner member 36 so that gas may pass from said chamber 33 to the burner tip 40. A thermostatic member 4I is attached. to the burner tube 36 and is arranged to be engaged on the shoulder 42 in connection with the boss 31 when the burner tube 36 is raised to open the valve 28. The fitting 38 has swivel connection 43 with the valve support 29 so that said valve support will be operated by the tube 36, and vice versa. Thus, when the tube 36 is moved, which may be conveniently done by manually engaging a projection 44, the valve 28 may be opened and the thermostatic device 4I will engage itslower end upon the shoulder 42.

This will permit gas to pass to the burner tip and also outwardly through gas outlet openings 45. When this gas is ignited the'thermostatic device 4I becomes heated and moves outwardly away from and out of engagement with the shoulder 42 permitting the spring 30 to draw the valve 28 toward closed position. f

Another thermostatic device 46 is provided in connection with the burner tube 36 and is of shorter length than the thermostatic device 4I and is arranged to operate oppositely. That is to say, when the thermostatic device 46 becomes heated it bends inwardly to position to engage upon the shoulder 42. And when the thermostatic device 46 becomes cooled it moves and bends outwardly out of engagement with the shoulder 42.

Accordingly, the operation is in this manner: The valve 24 is opened by manually engaging the projection 44 and moving the tube 36 upwardly. The tube 36 moves the valve 28 to open position. Gas then passesinto the chamber 33 and thence These ports 39 form communication to the burner tip 40 and gas outlets 45. When the tube 36 is moved upwardly the lower end of the thermostatic device 4| snaps over the shoulder 42 and holds the tube 36 in its uppermost position, and the gas passing through the burner tip 40 and through the gas outlet openings 45 is ignited. Both thermostatic devices 4I and 46 are, therefore, heated, with the result that the thermostatic device 4l is moved out of engagement with the shoulder 42 and the spring 30 then acts to move the valve 28 and other connected parts downwardly until stopped by engagement of the thermostatic device 46 upon the shoulder 42. In this way thevalve will be held open until the ames at the openings 45 become extinguished and the thermostatic device 46 becomes cooled. When the thermostatic device 46 becomes cooled it bends and moves outwardly out of engagement with the shoulder 42; and then the .spring 30 acts quickly to close the valve 28 and thereby prevent passage of any gas to the manifold 8 or through the pilot light device.

From the ioregoing it is apparent that my invention obtains all of its intended objects and purposes efficiently and satisfactorily. The construction and arrangement may be varied widely within the scope of equivalent limits without departure from the nature and principle of the invention. I do not restrict myself unessentially but what I claim and desire to secure by Letters Patent is:

In combination, a gas range having a pluralit of burners, a pilot light casing, tubes branching from said pilot light casing to each of said burners, said pilot light casing and said tubes forming an integrated, rigid, removable structure normally supported by said burners, a pilot burner separate from said pilot light casing and unattached thereto, said pilot burn'er being constructed and

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