US1951698A - Oven door - Google Patents

Description

March 20, 1934. J LEE 1,951,698

OVEN DOOR Filed July 14, 1952 2 Sheets Sheet 1 March 20, 1934-. J. 5 LEE 1,951,698

OVEN DOOR Filed July 14, 19.32 2 Sheets-Sheet 2 Patented Mar. 20, 1934 UNITED STATES PATENT OFFIQE OVEN noon Application July 14 1932, Serial No. 622,515

3 Claims.

This invention relates to stoves and more particularly to the mounting for the doors of ovens. ()ven doors are now generally provided with stops which limit the opening movement of the door and which cooperate with springs or counterbalances to maintain the door in a horizontal position while giving access to the oven. The stops have generally been cast with the door frame and were frequently broken so that the oven door was to some extent inoperative and the use of the oven caused great annoyance. The primary object of the present invention is to provide a steel stop which is not apt to be broken and which will be secured upon the door in such a manner 115 that, if it should be broken, it can be very easily removed and a new stop substituted therefor without requiring the provision of an entire door or subjecting the user of the oven to inconvenience over an extended period. The stated object and other objects which will incidentally appear in the course of the following description are attained in such a mechanism as is illustrated in the accompanying drawings, and the invention resides in certain novel features which will be first fully described and then more particularly defined in the claims.

In the drawings, Fig. 1 is an elevation viewing the inner side of the door.

Fig. 2 is a horizontal section on the line 2-2 of Fig. 1,

Fig. 3 is an enlarged view in perspective of one corner of the door showing the door in open lowered position,

Fig. 4 is a section on the line 4--4 of Fig. 3,

Fig. 5 is a section on the line 5-5 of Fig. 3,

Fig. 6 is a detail perspective view of the parts on the stove frame which cooperate with the door stop and the pivotal support for the door.

The stove frame may be of any approved construction and a portion of the same is indicated at 1, this portion being that which immediately surrounds the door opening. At one side, the

frame 1 is formed with a notch, indicated at 2,

to receive a trunnion or pivot lug 3 which is formed on the door frame 4, and above the notch 2 a vertical slot 5 is formed in the adjacent portion of the frame to receive the stop 6 and accommodate the movements of the same as the door is opened or closed. The door is also formed with a trunnion or pivot lug 7 at the opposite side which is adapted to rest upon a seat or lug 8 formed on the stove frame at the door opening. The door is provided with a stop 9 at the same side as the trunnion 7, but the stove frame at this side thereof is recessed, as shown at 10, to facilitate the engagement of the trunnion 7 upon its seat 8, as will be more particularly set forth.

Each stop 6 or 9 is formed of sheet steel and is provided with a shoulder 11 which is adapted to engage against the inner side of the stove frame to support the door in a horizontal position, as shown in Figs. 3 and 4. Each stop is formed at one end of a somewhat elongated angle plate 12 which is independent of the door lining and is detachably secured directly against the inner side of the door frame 4 between a side flange 13 and an inner flange 14 which is parallel with the side flange, as shown most clearly in Fig. 3, and a channel bar or U-shaped keeper 15 is disposed over the angle plate 12 and is detachably secured in position by screws 16 inserted through the keeper and the angle plate into the door frame, as clearly shown in Fig. 4. The stop 6 or 9 projects from an edge of the side web of the angle plate 12 and is alined with the same and projects beyond the end thereof, the shoulder 11 being formed on the projecting end portion of the stop.

On the bottom of the oven there is secured a bracket 1''! which has its front end portion offset, as shown at 18, and extended forwardly to engage in a notch 19 formed in a front flange 20 on the stove frame. A torsion spring 21 is coiled around the offset portion 18 which is of circular cross section, as shown in Fig. l, and one end 22 of this spring is secured in the bottom of the 35 oven while the other end thereof projects therefrom horizontally below the bottom of the oven, as will be understood from Figs. 1 and 2, and terminates in a hook 23 which is enaged with the lower end of a link 24 the upper end of which is engaged through an opening 25 formed in the stop 9 at a corner of the same whereby when the door is lowered into open position the spring will be put under increased tension and will quickly return the door to its closed position when aslight releasing push is applied to the door. The parts are so relatively located and proportioned that when the door is in the lowered position shown in Fig. 4 the spring will act as a counterbalance so that while the door will remain lowered until released, a very slight upward push upon the free edge of the door will serve to effect closing of the same.

In mounting the door in the stove frame, the trunnion 3 is engaged in the notch at the corre- 5 sponding side of the door opening and it is then necessary to rock the door so as to engage the trunnion '7 in its seat 8. To accommodate the trunnion 7 in this rocking movement, the recess 10 in the door frame is provided and it will be obvious that the door may be rocked so that the trunnion will move downwardly within the recess 10 onto the seat 8. The recess 10 provides an ample opening through which the workman may manipulate the link 24 so as to engage the same with the stop 9 and with the hook 23 of the torsion spring. Obviously, the recess 10 must be closed or covered after the door has been properly assembled with the stove frame and for this purpose I provide the stop bracket 26 which is formed of sheet metal having a flange 27 of a contour corresponding to the recess 10 so that it will fit neatly therein, as shown in Fig. 3. The central web of the bracket extends above the upper end of the flange 27 so as to fit against a projecting portion 28 of the stove frame to be bolted thereto, and in the lower end of this central front web of the bracket is a vertical slot 29 which receives the stop 9 and through which the stop plays as the door is opened or closed. The bracket is also formed with a side web 30 which aligns with a flange 31 on the door frame so that the web 30 forms, in effect, a continuation of the stove frame to define the door opening and impart to the stove frame a finished appearance.

From the foregoing description, taken in connection with the accompanying drawings, it will be seen that I have provided a very simple and compact structure whereby a sheet steel stop may be substituted for the stops heretofore employed and cast integral with the door frame. The stops of the present invention are not so apt to be broken as the cast stops and if, from any cause, they should be broken, the broken stop may be easily removed and a new stop substituted therefor. The recess 10 in one side of the door frame facilitates the assembling of the parts, and, when the bracket or keeper 26 has been fitted in place, the door opening is defined and surrounded by a practically continuous frame. The lower end of the bracket 26 will extend across the lug or trunnion 7 and will hold it in itsseat 8 and it also provides a very efficien't stop and guide to cooperate with the stop 9 and thereby limit the downward movement of the door. The torsion spring which tends to hold the door constantly in the closed position is so located below the oven that it is protected from the influence of the heat inthe oven and, consequently, the temper of the spring will not soon be lost. Moreover, the spring is out of the range of movement of the door and is protected against chance blows from passing objects so that it is not apt to be broken and thereby rendered useless.

Having thus described the invention, I claim:

1. In an oven, the combination with a door having parallel flanges on its inner side, of an angle plate fitting between said flanges, a door stop forming an extension of one web of said angle plate and disposed edgewise to the door, a keeper plate disposed over the other web of the angle plate, and fastening devices inserted through the keeper plate and the angle plate into the door.

2. In an oven, the combination of a frame defining a door opening and provided with a trunnion seat at the lower end of one side of the door opening, said frame being recessed above said seat and provided at the opposite side of the door opening with a notch to receive a trunnion on an oven door, an oven door provided with trunn'ions at its lower corners seating in said notch and said seat respectively, a bracket secured to 00 the door frame and fitting in the recess therein and over the trunnion engaged in the seat at the lower end of said recess, said bracket being provided. with a vertical slot in its lower .end, a plate secured to the inner side .of the oven door, and a stop extending edgewise from said plate through the slot in said bracket and formed to engage the inner side of the bracket when the oven door is lowered.

3. In an oven, the combination with a door having a flange on its inner side and provided with a lining, of an elongated angle plate independent of the lining detachably secured direct- 1y to the door at said flange, a .door stop forming a longitudinal extension of one web of said angle plate and disposed edgewise to the door, and removable fastening devices independent of the lining inserted through the angle plate into the door for detachably securing the angle plate anddoor stop in position on said door.

JAMES FRANKLIN LEE. [L. 3.]

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