US1065003A - Device for closing stove-doors. - Google Patents

Description

'L. SGRUGGS.

DEVICE FOR CLOSING STOVE DOORS.

APPLIOATION FILED DEC. 30, 1911.

1,065,003, Patented June 17, 1913.

tnvia nn spars ea LOYD SCRUGGS, OF ST. LOUIS, MISSOURI, ASSIGNOR TO COPPER GLAD MALLEABLE RANGE COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF NEBRASKA.

DEVICE FOR CLOSING STOVE-DOORS.

Application filed December 30, 1911.

To all whom it may concern Be it known that I, LOYD SCRUGGS, a citi- Zen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Devices for Closing Stove-Doors, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to devices for closing stove doors.

One object of the invention is to provide a device of novel construction for closing the oven door of a stove which consists of a weight, and means for causing said weight to exert greater leverage or pressure on the door when the door is closed than when the door is in its open position.

Another object is to provide a compact oven door closing device in which the weight has a relatively short range of travel and is so arranged that it cannot strike against the grate or against the ash-deflecting guides under the grate.

Another object is to provide an oven door closing device comprising a weight and means for guiding the weight so that it cannot sway or move laterally and thus strike against the side walls of the houslng or compartment of the stove in which the weight travels. And still another O l3]0l3 is to provide an oven door closing devlce that is arranged entirely within the stove, thereby overcoming the necessity of forming an opening in the bottom of the stove so as to form a clearance for the oven door weight when the oven door is in its closed position. Other objects and desirable features of my invention will be hereinafter pointed out.

Figure 1 of the drawings is a front elevational view of a stove provided with an oven door closing device constructed in accordance with my invention; Fig. 2 is a vertical sectional view taken on approximately the line 2-2 of Fig. 1 looking in the direction indicated by the arrows; Fig. 3 is a similar view showing the oven door in its open position; Fig. 4c is a horizontal sectional view taken on approximately the line 44 of Fig. 2 looking in the direction indicated by the arrows; Fig. 5 is a horizontal sectional view illustrating a slight modification of my invention; Fig. 6 is a perspective view illustrating one of the trunnions of the Specification of Letters Patent.

Patented June 17,1913.

Serial No. 668,621.

oven door; and Fig. 6 is a perspective view illustrating the crank arm that is connected to said trunnion.

Referring to the drawings which illustrate the preferred form of my invention, A designates the oven door of a stove which is provided at its lower edge with trunnions 1 and 2 that are journaled in boxes or bearings 3 that are fastened in any suitable manner to the front wall of the stove. A crank arm 4 is connected to the trunnion 2 in such a manner that it lies at approximately right angles to the oven door A when the oven door is in its closed position, as shown in Fig. 2, and a weight B, which is preferably of approximately cylindrical-shape, is pivotally connected to said crank arm for securely holding the oven door in its closed position. Instead of having the weight B carried entirely by the crank arm 4, as has heretofore been the general practice, have provided means for guiding and supporting the opposite end or free end of the weight B, said means preferably consisting of a rod or projection 5 on the rear end of the weight B that passes freely through an opening in a stationary part of the stove, thus preventing the weight from swaying or swinging laterally when the oven door is closedor opened. I prefer to arrange a stationary bracket 6 inside of the compartment in which the weight B travels, which bracket is provided with an opening through which the projection 5 on the weight passes freely, as shown in Figs. 2, 3 and at, but, if desired, the rear wall 6 of the stove could be used to support and guide the rear end of the weight, as shown in Fig. 5, the projection 5 on the weight merely passing through an opening in the rear wall (i of the stove.

The crank arm 4 can be connected to the oven door A in various ways but I prefer to provide the trunnion 2 with a substan tially wedge-shaped portion 2*, as shown in Fig. 6, that fits in a correspondingly-shaped socket 4 in the crank arm 4, thus rigidly connecting the crank arm to the oven door in such a manner that it cannot move relatively to the same. The crank arm is merely driven or forced onto the trunnion 2 on the oven door, and the box or bearing 3, which receives said trunnion, is provided with an end wall 3*, as shown in Fig. 4:, that laps over the end of the trunnion 2 and thus prevents the crank arm from moving endwise or working off the trunnion.

hen the oven door is in its closed position practically the entire force of the weight B is exerted on the crank arm at so that there is no possibility of the oven door dropping open. When the oven door is moved into its open position, as shown in Fig. 8, the crank arm 4 swings upwardly and thus lifts the front end of the weight B and draws said weight forwardly, the crank arm being so proportioned that itlies at approximately right angles to the weight when the oven door is in its open position so that practically no weight or force is exerted on the oven door in a direction tending to move the oven door into its closed position. hen the oven door is moved into its closed position the crank arm t moves the front end of the weight downwardly and also forces the weight rearwardly, the projection 5 on the rear end of the weight sliding freely in the stationary bracket or support provided for same.

Any suitable form of weight may be used but I prefer to use a weight that is relatively long and narrow and formed from metal that is cast around an iron bar that reinforces and strengthens the weight, the portion of said rod that projects from the rear end of the weight serving as the projection 5 which passes through the guiding bracket 6, and theportion of said rod which projects from the front end of the weight being provided with an eye through which a pin 7 passes that connects the front end of the weight to the crank arm 4.

An oven door closing device of the construction above-described is a decided im. provement on the oven door closing devices which have heretofore been in general use because practically the entire force of the weight is exerted on the door when the door is in its closed position, and practically no weight is exerted on said door when the door is in its open position. The device is compact, and as the weight has a relatively small degree of movement there is no danger of its striking against the grate 8 or against the ash-deflectors 9 arranged under the grate when the door is opened and closed, the range of travel of the weight being so limited that it never passes above the grate or below the ash-deflectors under the grate. The fact that the weight is guided at both ends prevents the weight from swaying or swinging laterally against the side walls of the compartment in which it travels so that all possibility of the weight becoming ammed or being broken away from the oven door is eliminated. And another desirable feature of such a construction is that the weight and the other parts of the door closing mechanism are completely incased in the stove and are so designed that it is not necessary to form an opening or slot in the bottom of the stove to form a clearance for the weight when the oven door is in its closed position. Such a structure is inexpensive to manufacture and assemble, and the way in which it is designed reduces to a minimum the possibility of its getting out of order, either when the stove is in use or when it is in transit.

Having thus described my invention,what I claim as new and desire to secure by Letters Patent is:

A stove provided with a grate, ash-defleeting guides arranged under the grate, an oven door, an operating weight for the oven door arranged intermediate said guides and grate, and means for guiding said weight so that it never travels above the grate or below said guides or sways'from side to side.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses, this twenty second day of December 1911.

LOYD SCRUG-GS.

\Vitnesses ELLs L. GHUnorI, GEORGE BAKEWELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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