US1935895A - Stove construction - Google Patents

Description

Nov. 21, 1933. A. H. TINNERMAN 's'rovE CONSTRUCTION Original lFiled March 9. 1929 Patented Nov. 21, 1933 UNITED STATES PATENT OFFICE Original application March 9, 1929, Serial No. 345,627. Divided and this application June 16, 1932. Serial No.617,492

3 Claims. (Cl. 126-39) This invention relates tov gas stoves and ranges and has particular reference to stoves which are used for cooking and baking in household service. The present invention is a division of my co- 5 pending application Serial No. 345,627, iiled March 9, 1929, and entitled Gas burner control apparatus. V

Considerable diiiiculty has been experienced heretofore in providing a stove of pleasing appearance. This has been particularly due to the practice of mounting the manifold, together with a plurality of valves and air mixing chambers in an exposed position at the front of the stove. In some instances, covers have been provided to shield the manifold valves and mixing chambers from view. However, in such constructions the valves are, to a great extent inaccessible, and the products of combustion are drawn into the mixing chambers, thereby greatly reducing the effectiveness of the burners.

The objectof the present invention is'to'obviate the positioning for the use of a gas manifold, a plurality of valves and mixing chambers atI the front edge of the stove, and yet permit the use 26 of operating handles at the front edge ofthe vstove and prevent the entrance of the products of combustion into the mixing chambers, at the same time, providing a construction the parts of which may be readily and economically manuf factured and assembled, and which will be accessible after their assembly has been completed without'necessitating'the removal of attached parts of the stove.

. The preferred means for carrying out my invention is illustrated in the drawing in which Fig. 1 is a plan view of a stove embodying my invention; and Fig. 2 is a plan, on an enlarged scale, of the ga". and air distributors, certain parts being broken away to more clearly illustrate the internal construction thereof.

Referring to the drawing, and particularly to Fig. 1, 10 indicates a gas range of the usual type, having a burner box 11 and an oven box 12. The burners are indicated at 15 as being arranged in the customary manner within the burner box and as having hollow Shanks 14 through which the gas is conducted. Heretofore, the gas has usually been conducted to the burner through a manifold positioned in front of the stove with conduits leading from the manifold to each burner. necessitated the use of a gas pipe which extended from the rear to and across the front of the stove and which has presented an unsightly appearance and has enlarged the overall dimensions of the stove.

In the present invention, the manifold in front of the stove is omitted and instead, the gas is conducted through a supply pipe 15 which extends to the center of the burner box from the rearpart of the stove and is normally concealed from view.- The supply pipe is shown as terminating in a housing 16 centrally located in the burner box and from which pipes 17 lead to the individual burners. A valve 18 is associated with each distributor outlet and is controlled by handles 19, mounted preferably at the front of the stove. A rod 20 may extend inwardly from each handle and be connected to the associated valve by some form of mechanism which permits the valves-to be opened the desired degree with a relatively small turn of the handle. One form of mechanism suitable for this purpose comprises, as shown, a beveled gear 21 on each rod and which meshes with another beveled gear 22 on the associated valve stem.

'Ihe hollow shanks 14 of the burners 13 extend yinwardly toward the burner box 16 and terminate 'in an enlarged chamber 25 which form the air mixing chambers. The mixing chambers 25 terminate in a casing 26 which encloses the housing 16. Suitable air circulating valves 27 are associatd with each chamber 25 and gas valve 18, and are so arranged that they may be adjusted to insure the proper proportions of air and gas for obtaining emcient operation of the burners.

To prevent the entrance of the products of combustion into the casing 26 or the mixing chambers, I provide a conduit 30 which extends from the enclosed casing 26 rearwardly through 90 the burner box 11 and terminates at the rear edge of the stove. The conduit 30 serves to conduct air from without the burner box directly to the casing 26 and prevent the comingling of such air with the products of combustion.

To enhance the appearance of the stove, as well as to permit ease of assembly, and yet make the housing 26 as air tight as possible relative to the burner box, I prefer to so arrange the conduit 26 that it encloses the conduit 15, which leads'to the housing 16. This eliminates the necessity of accurately aligning an opening through the housing 26 for the entrance of the conduit 15 which leads to the burner box.

From the foregoing description, it will be obvious thatY my invention eliminates the necessity for the use of a manifold in front of the stove, thereby greatly enhancing the appearance of the stove and yet my invention provides aconstruction wherein the valve mechanism and mixthe gas from said pipe to the respective burners,

means outside the stove for controlling the respective valves, said valve-controlling means being mounted on the edge of the stove remote from the edge at which the gas supply conduit enters the stove, an air supply conduit extending into the stove, means for distributing air from the conduit to the respective burners, and means within the stove for regulating the proportion of air to each burner.

2. In a stove, the combination with a burner box, of a plurality of burners mounted therein, a manifold housing in the burner box and to which the burners are connected, a gas supply conduit extending to the manifold housing from one edge of the stove, a gas valve mounted in said housing, means outside the burner box for controlling the operation of said gas valve, a second housing surrounding the rst named housing and communicating with the burners, and an air supply conduit extending into the burner box from one edge of the stove and communicating with said second named housing, and means disposed on the side of the burner box opposite the point of entry of the gas and air supply conduits for controlling4 the operation of said valve.

3. In a gas stove, the combination with a pluralityI of burners, of a gas supply conduit extending into the stove from one edge thereof, valves for controlling theiiow of gas to each burner, a common housing for said valves, means for distributing the gas from said housing to the respective burners, means outside the stove for controlling the respective valves, a casing surrounding said housing and in communication with said burners, and an air supply conduit surrounding the gas supply conduit and extending intoV the stove from one edge thereof.

Y ALBERT H. TINNERMAN.

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