US1875548A

US1875548A - Heat regulator for gas stoves

Info

Publication number: US1875548A
Application number: US558432A
Authority: US
Inventors: Samuel S Baker
Original assignee: Individual
Current assignee: Individual
Priority date: 1931-08-21
Filing date: 1931-08-21
Publication date: 1932-09-06
Anticipated expiration: 1949-09-06

Description

s. s. BAKER 1 ,875,548

S STOVES Sept. 6, 1932.

HEAT REGULATOR FOR GA 1, 1951 2 Sheets-Sheet 1 Filed Aug. 2

Sept. 6, 1932. s. s. BAKER 1,875,548

HEAT REGULATOR FOR GAS STOVES 2 Sheets-Sheet 2 Filed Aug. 21. 1951 Inventor BAKER Att'y.

Patented Se t: 6, 1932 PATsNT. OFFICE OF WEBSTER GROVES, MISSOURI smear. a. sane,

HEAT REGULATOR FOB GAQ STOVES Application fled August 21,1931. sum 1%. 558,432.

My invention relates to improvements in gas stoves and particularly heat regulators therefor and their relation to other parts of the stove structure.

In present day gasstoves or ranges, commercially known as the table top or console type, the open burners are arranged to lie in substantially the same horizontal plane as the top part, of the adjacent oven and the entire top of the stove is capable of being enclosed by a suitable ornamental cover when t e stove is not in use. In .gas stoves of this type, it has been the custom to hermostatically controlled valve or regulating the heat of the oven at the oven en of the stove in alignment with the thermostat in the oven, due to the fact that the hot top portion completely covers the side of the oven adjacent thereto. This type of installation has the disadvantage that the regulator valve is remote from the valve controls for the open burners which prevents easy accessibility, es-

lation is the large pecially, when the thermostat therefor is located near the rear of the oven, as is desirable from the standpoint of maximum oven space. 3

Another disadvantage of this type of instalamount of pipingnecessary the oven burner by way of It is, therefore, one of the objects of my invention to provide, in a gas stove of the type referred to, a regulator valve for automatically controlling the oven burner supply, which is located adjacentthe control valves for the other burners and is the thermostat within the rear to supply fuel to the regulator valve.

regulated by of the oven.

Another object of my invention is to provalve and the thermostat which will permit the latter to accurately control the valve in accordance with the oven temperature regar less of the heat to which the connecting means may be subjected.

Still another object of my invention is to provide on a table top or console type gas stove, a regulator valve that is easily accessible, neat in appearance, and requires a minimum amount of fuel supply piping.

Other objects will become apparent from to automatic oven the following description taken in connection with the drawings showing a preferred embodiment of my invention.

In the drawings Figure 1 is a front view of a table top type of gas stove disclosing my invention in relation to the open burners and the oven; Figure 2 is a top view of Figure 1 with the cover removed and the oven in cross section; Figure 3 is a top view, partly in section, of the connection between valve and the thermostat; and Figure 4 is a side view, partly in section, of the regulator valve and part of the connection with the thermostat.

In the embodiment of my invention illustrated by Figures 1 to 4 of the drawings, 1 indicates a gas stove of the table top type which is composed of an oven having a broiler section 2 and a top section 3, and an open burner section 4 lying in the/ same plane as the top of the top section. A fuel supply pipe 5 extends into the side of the open burner section and is connected to the manifold 6 The exposed burners 7 are connected to the manifold through suitable valves 8 in a well known manner. fuel supply pipe- 9 is connected through a manual valve 10, with the regulating valve 11 arranged'at the front of the open burner section, which latter valve automatically controls the flow of gas to'the oven burner 12 connected to the regulating valve by pipe 13. Situated in the rear of the oven section 3 near the top thereof is a thermostat 14 held in place by a suitable clip and extending through the

oven walls

15 and 16 into the rear part of the open burner section 4 and connected to control the valve 11 by suitable mechanism broadly indicated by the numeral 17 and to be later referred to indetail.

Itis thus seen that by this arrangement 0 the regulator valve and thermostat that a minimum amount of fuel pipe is used to connect the regulator valve and the oven burner with the manifold. It is also to be noted that the arrangement places the regulator valve adjacent the valves controlling the exposed burners, which is very desirable from the standpoint of accessibility. Also, by placing the thermostat in the top rear portion of the the regulator ion oven section 3, it is free from being constantly tion tube 41 is of the well known ty e and hit and battered by the insertion of cooking extends to the outside of the oven an is seutensils into the oven. cured at its outer end to the L-shaped casing f in some of the table top or console type and is closed at its inner end by means of a 5 stoves there is sufiicient space between the screw ca 42held in place by the lock nut 43. oven and the adjacent exposed burners 7, the En close within the part of the tube lying fold adjacent the si e of the oven. at one end agalnst the screw cap 42 and haveferring to Figures 3 and 4, the regulating ing its otherend in engagement with 10 valve, the thermostat, and the connections which in turn engages a short rod 46 extend- 7 therebetween will be describedindetail. The ing into the central chamber 47' of the L- regulatlng valve 11 is com osed of a casing shaped casing. 18 rovided with an inlet 0 amber 19 and an A T-shaped lever 48 is ivoted atits base out at chamber 20. Theinlet chamber is in within the chamber 47 and as'one of its arms 5 communication with the su ply pipe 9 from v in engagement with the adjacent end of short 80 the manifold by means of a tting 21 attached rod 46 and its other arm in engagement with to the valve casing. This fittin also conthe end of a short rod 49 slidable in the part of nects the outlet chamber to t e pipe 13 L-sha ed casing to which the tube 37 is conleading to the burners. The usual adjustable necte Interposed between the short rod 49 by-pass 22 in the fitting supplies a minimum and the valve stem and lying within the tube 86 amount of gas from the pipe 9 to the pipe 13 37 is a rod completing the connection beto assure a supply of gas to the burner 12 if tween the thermostatic tube and the valve. the valve is closed. A disc valve 23 is en- An opening 51 in the L-shaped casing closed closed in the casing 18 and is rovided with by a plug 52 provides for assembly of the rods 2 a seat 24, between the inlet-an outlet charm and the T-lever and a bracket 53 secured to bers, for regulating the flow of gas therebethe back of the section 4 of the stove afi'ords tween. A valve stem 25 is screw-threaded a convenient support for the L-shaped casing. within the central portion of the valve and Since the spring 31 is normally tending to the valve is provided at its outer surface with hold the valve 23 onits seat, the end of the 30 an integral rectan ular ortion 26. carbon rod 44will beheld in engagement wlth A i g g p 2 is t a d y secured to the cap 42 of thermostatic tube 41 by means the valve casm 18 and has a central opening of the valve stem, the rod 50,

short rod

49, 28 therethroug in alignment with the valve Tr-lever 48, short rod'46, and rod 45, and stem in which is rotatably mounted a setting there will be no lost motion in the entire conmember 29 provided with a rece s 3 adap d nection. When the oven is cold the thermo- 190 to receive the integral portion 26 o the static tube 41 will becontracted and the valve valve. A suitable valve spring 31 is n will be unseated' to allow gas to flow to the posed between the setting member nd h burner 12, the maximum opening of the valve valve 23 normally tending to maintain the being determined by the ad ustment, by

40 valve on its seat. A knob 32 is connected to means of the manual setting member, of the the outside of the setting member by means of position of the valve on the valve stem. When a set screw 32', thereby providing a conventhe burner has been li hted and the oven is ient means for adjusting the valve stem. heated the thermostatic tube 41 will be ex- Fixed to the valve casing is a second cap anded, thereby increasing'its len h. The

vmember 33 spaced from the cap 27 and proength of the carbon rod is little a ected by vided with an arcuate opening 34 and approthe heat and, therefore, the carbon rod will priate indicia adjacent thereto. An indicatbe moved in the thermostatic tube by the acing member 35 lies betweenthe two ca memtion of the valve spring 31 acting through the

bers

27 and 33 and is rotatably secure to the valve stem, connecting rods and T-lever',

59 setting member 29. Part of the surface of the thereby closing or tending to close the valve.

ndicating member adjacent the scale open- The entire mechanism is so adjusted before mg 34 is provided with an arcuate colored installation that when the temperature of the portion 33 to simulate a thermometer, ne oven reaches the value for which the setting end of whlch cooperates wlththe mdicia admember has been manually adjusted, the ex- 34150 In i the Settmg pansion of the thermostatic tube will have f h m m er permitted the valve to close to a suflicient exe valve cas1ng18 ad acent the inner end tent to revent further increase of temperaof the valvestem has an opening 36 therein ture. ny drop in temperature in the oven 60 across the section 4 between the exposed and the valve to open wider by the action of urners 7 A nut 38 securely locks the tube t e connections against the valve stem. It to the casing. The end of the tube adjacent is, therefore, seen that by means of the therthe back of the section 4 is flared and secured mostatically regulated valve, the fuel supto an L-shaped casing 39 by means of a nut 40. plied to th burner is always such as to main- The t ermostat1c expansion and contractain the temperature of the oven at the value 139 made to prevent this heat from interfering with the accuracy of regulation. I accomplish this by constructing the moving elements of the connecting means between the thermostat and valve ofmaterials having the same coefficient of expansion as the parts which enclose them. Thus tube 37 and rod 50 are of the same material such as copper; casing 39 and the

parts

46, 49 and 48 are the same material such as brass; and rod is of the same material as the tube 41 of the thermostat.

Having fully described my invention, what I claim as new and desire to secure by etters Patent of the United States is:

1. In a stove'having an oven and open burners located laterally of the oven, a thermostat positioned at the rear of the oven, a valve casing positioned laterally of the front of the oven and provided with a valve controlling the fuel sup ly to the oven, and means connecting the t ermostat to the valve, said means comprising a tube rigidly connected to the valve casing and a rod within the tube to transmit movement of the thermostat to the valve.

2. In a stove having an oven and open burners located laterally of the oven, a thermostat in the rear of the oven, a valve casing positioned laterally of the front of the oven and provided with a valve controlling the fuel supply to the oven, and means connecting the thermostat to the valve, said means comprising a tube rigidly connecte to the valve casing and a rod within the tube to transmit movement of the thermostat to the valve, said tube being exposed to the heat of an open burner when the latter is in operation and being of material having the same coeificient of expansion as the rod.

3. In a stove having an oven and open burners located laterally of the oven, a thermostat positioned at the rear of the oven, a valve casing positioned laterally of the front of the oven and provided with a valve controlling the fuel supply to the oven and means connecting the thermostat to the valve, said means comprising a tube rigidly connected to the valve casing, a casing located adjacent the rear of the oven and connecting said tube to said thermostat, a rod in sai tube connected to said valve, and means in said casing for transmitting movement 0 said thermostat to said rod.

4:. In a stove having an oven and open burners located laterally of and substantially in the plane of the top of the interior of the 5 ling the front of d mostatic tubewith the oven, a thermostat in the rear of the oven, a valve casing positioned laterally of the front of the oven and provided with a valve controlling the fue supply to the oven, and means connecting the thermostat to the valve, said means comprising a tube rigidly connected to the valve casing and a rod within the tube to transmit movement of the thermostat to the valve, said tube being exposed to the heat of an open burner when the latter is in operation and being of material having the same coefiicient of expansion as the rod.

5. In a stove havin an oven and 0 en burners located lateral y of the oven, a uel manifold in front of the open burners, a valve casing positioned adjacent the fuel manifold and provided with a valve controlfuel supply to the oven, a thermostat in the rear of the oven and means exterior of the oven for connecting the thermostat to the valve.

6. In a stove having an oven and 0 en burners located laterally of the oven, a uel manifold in front of the open burners, a valve casing positioned adjacent the fuel manifold and provided with a valve controlling the fuel supply to the oven, a thermostat in the rear of the oven, and means connecting the thermostat to the valve, said means comprising a tube rigidly connected to the valve casing and a rod within the tube to transmit movement of the thermostat to the valve.

7 In a stove having an oven and open burners located in a section of the stove situated laterally of the oven, a manifold and manual valves in front of the burners, said valves controlling the fuel supply from said manifold to the open burners, a valve casing positioned adjacent the manual valves and provided with avalve controlling the fuel supply of the oven, a thermostat located in the rear of the oven and extending into the open burner section, and means for connecting the thermostat to the valve.

8. In a stove having an oven and a burner therefor, a valve casing positioned at the the stove and provided with a valve controlling the fuel supply to the oven burner, a casing at the rear of the stove, a thermostat comprising a tube rigidly connected to said casing and extending into the oven and a rod in said tube having a diflerent coefficient of expansion from said tube, a tube rigidly connected to the valve casing and to the casing at the rear of the stove, a rod in said last named tube operatively connected to the valve and means in said casing for operatively connecting the rod in the therrod in the last named tube and the tube contube, the thermostatic being at an angle nected to the valve casing to each other.

9. In apparatus of the class described, the combination with a gas stove, of an oven therefor, open burners adjacent the oven and wlthin the tube with the th signature, this 19th day of plate as the top portion of manifold adjacent the front of said 0 en burners, a burner for the oven connecte to the manifold, a valve at the front of said open burners for controlling the el supplied to the oven burner, a valve stem, a thermostat in the rear of the interior of t e oven and extending at an angle to the axis on said valve stem, and means for transmitti'n'g movement of said thermostat to said valve stem to control the valve.

10. In apparatus of theclass described, the combination with a gas stove, of an oven ogen burners adjacent the oven and plane as the top of the oven, a burner for the oven, front of the open burners for controlling the fuel to th burner a valve casing, a thermostat in the rear .of the interior of the oven, means exposed to the heat of the open burners for transmitting movement of said thermostat to said valve, said means comprising a tube secured to the valve and connected ermostat, a rod-operatively engaging the, valve, and means for transmittin motionfrom the thermostat to the rod, sai rod and tube being composed of materi- :11 having the same coefiic-ient of expansion.

11. In a stove having an oven and open burners, a valve casing positioned at the front of th d provided with a valve controlling the fuel supply to the. oven, a thermostat in the oven,'and means connecting the thermostat to the valve, said means comprising a casing at thenrear of the stove, a tube rigidly connected to the valve casing and to t e casing at the rear of the stove and a rod to transmit movement of the t ermostat to the valve, said tube being exposed to the heat of an open burner and being of material having the same coeflicient of expansion as the rod.

In testimony whereof, I

lying in the same said oven, a fuel hereunto aflix my Au st, 1931. SAMUEL BAKER.

a valve at the