US1519057A - Oven door - Google Patents

Description

Dec. 9, 1924- 1,519,057

c. v. ROBERTS OVEN DOOR Filed June 29, 1923 2 Sheets-Shet 1 c. VJROBERTS Dec. 9, 1924. 1,519,057

OVEN DOOR Filed June '29, 1925 2 Sheets-Sheetfi g Z16 .555077265/1" //V W yflm CLARENCE V. ROBE-EI'S, IPEi'ILiDZELP & MANIDER STOVE GGMPAZKTY, OF Pr ii,-

TION OF PENNSYLVANIA.

OVEN

.Application filed June 28,

To all whom it may concern.-

Be it known that I. C nnamon V. :R-OBERIS, a citizen of the United States, residing in Philadelphia, lhmnsylvania, have invented certain improve .nits in (Even lJ'oors, of which the following is a specification.

This ii'iventimi relates to certain improvements in doors used on the ovens of gas and coal ranges, in which sheets of glass, or the like, are mounted. The invention is especially adapted to oven doors, in which a thermometer is mounted and in which two sheets of glass are used.

One object of the invention is to use sheets of glass similar in sl ape on both sides of the oven door.

A further object of the invention is to design the frame, in which the glass mounted, so that special sheet of glass can be located on either side of the frame and securely held in place.

In the accompanying drawings:

Fig. 1 is a detached front view of an oven door, illustrating my invention;

Fig. 2 is a rear View of the oven door;

Fig. 3 is a rear view of the oven door with the back plate removed and the glass broken away to show the grooves in the frame;

Fig. l is a sectional view on the line H, Fig. 1;

Fig. 5 is a sectional View on the line 55, Fig. 1;

Fig. 6 is 6- 6, Fig. 1;

Fig. 7 1s an enlarged sectional view on the line 77, Fig. 1; and

Fig. 8 is a detached perspective view of one of the sheets of glass.

Referring to the drawings, 1 is the main frame of the oven door, having hinge pintles 22 and a. handle 3 by which the door is opened and closed. Mounted in the main frame is an inner frame 4, having a flange 5, which rests against the back of the main frame. The body portion of the inner frame projects from the main frame. In the present instance, the outer surface of the inner frame is flush with the outer surface of the main frame. In some instances, the inner frame may be made integral with the main frame.

6 designates a thermometer in an opening T in the inner frame. The thermometer, in the present instance, is attached to a back a sectional view on the line l @FFZ C E.

YLV..NIA, ASSIGNOR TO ROBERTS EA, EENHE'SYLVANIA, A CORPORA- mild DOOR.

1923. serial N's. erases.

frame 8. Screws 9 secure the parts to the main frame. The inner frame has two openings l0 and 11. The rear frame has corresponding openings 12 and 13, Figs. 2 and (in referring to the drawings, it will be noted that the openings in the frame are of odd shapes. The shape of the opening on one side is similar to the shape of the opening on the other side, only reversed. Heretofore, it was necessary to use glass made in two separate molds. One of the features of this invention is to use a single mold. The glass fits the opening in one side, and, when reversed, it fits the open :ing at the other side of the oven door.

The sheet of glass 14 is made as shown in Fig. 8, and has a recess 25 to fit around the thermometer, and is provided with a wide flange 15, which projects on one side only. 9n the opposite side is a groove 16, as clearly shown in Fig. 7.

Surrounding the opening 10 of the inner frame is a wide channel 17, in which is located the flange 15 of the glass 14:. Between the flange 15 and the bottom of the channel is an asbestos packing 18. Surrounding the opening 11 in the inner frame is a narrow channel 19, against which rests the body of the sheet of glass, as clearly shown in Fig. 7. In the channel is an asbestos packing 20.

l/Vhen the two sheets of glass are in place, the back plate 8 is secured in position and the flanges 21 of the back plate rest against the surfaces of the glass, as clearly shown in Fig. '2', holding the sheets of glass to their seats.

It will be seen by the above construction, that a single sheet of glass can be used to fit the opening on either side of the oven door, which obviates the necessity of carrying glass of more than one size and shape in stock. It also eliminates errors in ordering new sheets of glass, as it is unnecessary to state whether a right hand sheet or a left hand sheet is required.

In pressing sheets of glass, the flange 15 is desirable so that the sheet will hold its shape. The groove 16 back of the flange is provided so that the sheet will be substantially the same thickness throughout.

I claim:

1. The combination of an oven door having two openings, a pair of sheets of pressed glass each shaped to riteither opening and having a marginal flange at one side and means for clamping one of said glass sheets in one position in one of said openings and the other sheet in reversed position in the other opening.

2. The combination of an oven door having an opening at each side of the center and an opening for a thermometer at the center the side openings being shaped to conform to the shape of the thermometer openin and sheets ot glass shaped to it the openings on each. side of the center of the oven door each sheet having a wide flange at one side and a groove at he opposite side, the frame of the oven door being shaped so that the flanged side of the sheet of glass will fit the opening in one side of the oven door and the grooved side will fit the opening in the opposite side thereof.

3. The combination in an oven door, of a main frame; an inner frame mounted on the main frame and having an opening at or near the center for a tlieri'noineter, or other device, said inner hnne also having two openings one at each side of the center shaped to conform to the opening for the thermometer, the inner frame having a wide channel surrounding one opening and a narrow channel surrounding the other opening; sheets of glass fitting the openings, each sheet of glass having a wide flange at one side and a groove at the opposite side, the flanged side of the glass fitting in the wide channel and the grooved side fitting in the narrow channel; packing in the channels; a rear plate having openings corresponding to the openings in the inner frame; and means for securing the parts together.

at. A sheet of glass tor an oven door having a wide flange surrounding the edge thereof and projecting at one side and having a groove back of the flange at the opposite side of the sheet and proportioii'ied to the flange whereby the sheet is of uniform thici'rness throughrmt.

A sheet of glass for oven doors having a fiat body and a recess along one edge, and having a continuous marginal flange of broad flat form at one side and a continuous marginal groove at its opposite side proportioned to the flange whereby the sheet is of uniform thickness throughout.

CLARENCE V. ROBERTS.

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