US1878552A

US1878552A - Gas burner control apparatus

Info

Publication number: US1878552A
Application number: US345627A
Authority: US
Inventors: Albert H Tinnerman
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-03-09
Filing date: 1929-03-09
Publication date: 1932-09-20
Anticipated expiration: 1949-09-20

Description

Sept. 20, 1932. A. H. TINNERMAN GAS BURNER CONTROL APPARATUS 4 Sheets-Shet 1 Filed March 9, 1929 $762 2 I gjwuwntoa wwww dam M A Sept. 20, 1932. A. H. TINNERMAN GAS BURNER CONTROL APPARATUS Filed March 9, 1929 4 Sheets-Sheet 2 v gn-mwfoz @w, M% V dtboz we g Sept. 20, 1932. A. H. TINNERMAN GAS BURNER CONTROL APPARATUS 4 Sheets-Sheet 5 Filed March 9, 1929 ac. souzcs '38 gwuentor QMM/f (7% Zmwwm/w Sept. 20, 1932. A. H. TINNERMAN 1,878,552

I GAS BURNER CONTROL APPARATUS Filed March 9, 1929 4 Sheets-Sheet 4 4C SOURCE gnwntoz QM 1 7M abbozmqq Patented Sept. 20, 1932 8 UNITED STATES.

PATENT OFFICE Application filed male, 1929. Serial m. $45,027.

This invention relates to gas stoves and ranges and has particular reference to stoves which are used for cooking and baking in household service. Considerable difliculty has heretofore been experienced in the operation of gas stoves in preventing the escape of unburned gas, particularly if the valve handle should be inadvertently turned off, or if the liquid contents of a container should spill over and extinguish the flame. An effort to overcome this diflicult has been made by maintainin the pilot light in operation with provision or conducting unburned gas to the light, but it has been found that in some instances, the ignition of the gas occurs with suflicient force to extinguish the pilot light and also the burner flame.

- A principal object of the present invention is to provide means for automatically causing the ignition of a burner in the event that the flame should be extinguished inadvertently or in the event that the gas should be turned on accidentally. The present invention is also intended to prevent the occurrence of explosion if a gas valve should be turned on by children.

A further object is to obviate the neces-' sity for the use 2f a gas'manifold and a plurality of valves at the front edge of the invention is illustrated in the stove, and yet to permit the use of valve operatin, handles at the front edge of the stove. n this way, the valve handles are readily accessible for use, and the gas valves, which normally present an objectionable appearance are concealed from view. 4 l

The preferred means for carryin out my rawings, wherein Fig. l'is a plan view of a stoveembodying my invention Fig. 2is a plan view of the gas and air distributors; Fig. 3 is a troller associated therewith" 1 horizontal section taken through the 'distributor; Fig. 4 is a front elevatlon of a gas valve operatingv handle with a circuit con 5 is a verne '5'-5 in tical section taken along the individual burners.

connected to the associated valve Fig. 3; Fig. 6 is a wiring diagram; Fig. 7 is a top plan view of a stove having a modification of my invention; and Fig. 8 is a section taken on the line 8-8 in Fig. 7.

Referring-particularly to Fig. 1, 10 indicates a as range of the usual type having a burner ox 11, and an oven box 12, the burners are indicated at 13 as being arranged in the customary manner within the burner box, and as having hollow shanks 14 through i a which the gas is conducted. Heretofore, t e gas has usually been conducted to the burners througha manifold positioned in front of the stove with conduits leading from the manifold to each burner. This necessitated the use of a gas pipe which extended from the rear to the front of the stove and which, in many instances has presented an unsight- 1y appearance.

In the present invention the manifold 1n front of the stove is eliminated, and instead, the gas is conducted through a supply p1pe 15 which extends toward the center of the burner box from the rear part of the stove. It is thus normally concealed from view. The supply pipe is shown as terminating in a housing 16 from which pi cs 17 lead to the A va ve 18 is associated with each distributor outlet and, each is controlled by a handle 19 mounted preferably at the front of the stove. A red 20 may extend inwardly from each handle and be by some form of mechanism, which permits the valve to be opened to the desired degree with a relatively small turn of the handle. One form; of mechanism suitable for this purpose com prises a bevel gear 21 on each rod whlch meshes with another beveled gear 22 on the associated valve stem.

The air for supporting combustion ma be brought into the burnerbox by a conduit 25, which can also enter from the reanof thestove and terminate in a casm 26 which encloses the housing 16. .Suitab eair circulating valves 27 are associated with the casing 26, and with each gas valve, to insure proper proportions of air and gas for obtaining efiicient operation of the burners.

To prevent the escape of unburned gas from any of the burners, I provide means for automatically igniting the gas if for any reason it should be permitted to escape from any of the burners. I accomplish this result in several ways. In Fig. 1, an electrical igniter is caused to operate whenever the gas handle is turned to the on position, provided the gas flame is extinguished. This igniter may take the form of an electrical ignition device such as a spark plug indicated at 30, which is associated with each burner, and which is connected to a source of electrical supply. The igniter is'intended to be operated only when the flame is extinguished. To this end, I may utilize a. thermostat 31 which is connected in series with the spark plug circuit and which is disposed in the path of the burner flame. The thermostat is so arranged that the heat from the burner flame will cause it to operate to open the igniter circuit and to hold it open so long as the flame is lit.

A thermostat is set-to close the igniter circuit as soon as the flame is extinguished. By utilizing a valve controlled switch in the igniter circuit, the operation of the igniter is automatically effected whenever the flame is extinguished and the valve is turned on. This switch may be of any desired form which is connected in series with the igniter circuit, and which is closed whenever the handle is turned a predetermined degree. A suitable switch for this purpose is indicated in Fig. 4, as comprising a movable contact plate 32 which is rigidly mounted on the rod 20 and which is arranged to engage

contact plates

33 and 34 whenever the handle 19 is turned a slight degree towards the on position. The contact plates, as shown, are semi-circular in shape and since the usual arrangement is to provide a quarter turned handle, it is evident that the circuit through the controller will be closed, so long as the .valve is turned on to a sufiicient extent to cause the escape of gas.

igniter. In this circuit, the current flows from a source of alternating current supply to a conductor 36, then throu h a primary winding 37 of a transformer, t ence throug the thermostatic switch 31 and the main switch 32 and back to the source of supply through a conductor 38. The secondary winding of the transformer is indicated at 39, and is connected through a line 41 to a spark coil 4.2. From thence current flows to the igniter 30 and back through a. line 29 to the secondary of the transformer. A suitable condenser 43 is placed across the poles of the secondary winding of the transformer in the usual manner. While I have shown a spark lug as being used for the igniter, I have ound that a glow lighter will also operate in a satisfactory manner. Referring now to Figs. 7 and 8, I have shown a modification of my invention which utilizes the principal of an igniter for lighting the gas but which obviates the necessity for an igniter at each burner with a circuit controller, which is operated by each valve. The modification takes the form of a gas pilot which remains ignited at all times. Gas passageways lead from the respective burners to the immediate vicinity of the pilot and serve to conduct unburned gases to the pilot. The arrangement is so carried out that such gases are immediately ignited as soon as they escape from any burner. To insure constant ignition of the pilot, I provide means for automatically igniting it if for any reason, the flame should be extinguished.

Referring now more in detail to the apparatus, 50 indicates a gas passa eway which leads from the distributor and w ich provides an outlet for a pilot light. A casing 51 extends over the pilot and provides a chamber into which gas may be conducted from any burner. An inverted U-shaped member 52 is shown adjacent one of the burners and as being inclined upwardly at the pilot and to assist in conducting the gases in a natural manner to the desired point. Similar passageways lead fromthe distributor to each burner. To facilitate ignition of the oven burner, I may employ a relay pilot indicated at 55 within a casing 56. This relay is shown as being disposed near the edge of the burner box ad acent the oven. One passageway 57 leads downwardly from the relay casing to the oven burner 58 while another passageway I 59 to the main pilot and will again be ignite To assure ignition of the main pilot, I have shown an electrical igniter which operates in" the same manner as that heretofore described. The parts comprising the igniter circuit bear the same numbers as those indicated in the dia am of Fig. 6.

rom the foregoing description, it Wlll be obvious that my invention insures automatic i nition of gas flowing from any burner, and that theapparatus for effecting such operation may be readily incorporated in existing types of stove construction. It is also 0bvious that the present invention eliminates the necessity for the use of a manifold at the front of the stove and that as a result the appearance of the stove is thereby greatly enhanced.

I claim:

In a gas stove, the combination with a burner box, and an oven box, a burner in the oven box, a pilot light in the burner box, means for conductin gas from said burner to 6 the pilot light where y gas escaping from the burner is automatically ignited, and a relay pilot light interposed in said means. In testimony whereof, I hereunto afiix my signature.

ALBERT H. TINNERMAN.