US1260776A - Stove-door and particularly oven-door for stoves. - Google Patents

Description

G. B. JONES.

STOVE DOO R AND PARTICULARLY OVEN 000R FOR STOVES. APPLICATION FILED NOV. 1. 1915.

1,263,776. Patented Mar. 26,1918.

WITNESSES: INI/ENTOR 6/0/36 6. J/zag A TTOHA/EV rnvrrnn snares rarnnr enrich- GEORGE B. JONES, OF KOKOMQINDIANA, ASSIGNOR TO THE GLOBE STOVE 8; RANGECQ,

. OF KOKOMO, INDIANA.

STOVE-DOOR AND PARTICULARLY oven-noon non srovns.

Specification ,of Letters Patent. PatentedMar. 26, 1918.

Application fiIedNOVember 1, 1915. Serial No. 59,127.

To all whom it mayooncern: 1 j

Beit known that I, G-noRGnB- JoNEs, a citizen ofthe United -States, residing at Kokomo, county of l-lowarchstate of Indiana, have invented certain new and. useful lmprovementsin Stove-Doors and PZII'tICU- larly Oven-Doors for Stoves, of. whichthe following is aspecification] This invention relatesto stove doors and particularly ,to oven doors for stoves.

The object of the inventionis to provide a j simple and effective means of supporting the sheet metal back plate onthe cast frame. Further objects, and objects relating to details andeconomics of construction and detailed description to follow. I i

I accomplish the objects, of my inventio by the devices and means described in the following specification. 1 The invention is clearly defined and pointed out in the claims.

A structure-which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this specification, in which:

manufacture will definitely appear from the I Figure 1 is a perspective view of the, rear of a stove door embodyingmy invention, withthe lower halfof the back plate broken away. l

Fig. 2 is an enlarged perspective view of the corner of the pattern which is used for making the front frame of the door.

Fig. 3 is a perspective view of the tinduff used.

Fig. is another perspective view of this tin duff, showing it in a different position.

s Fig. 5 is a perspective view of one corner of the back plate.

Fig. 6 is a section on the lin 66 of Fig. 1.

Fig. 7 is a fragmentary view through the mold used in casting the front frame, showing the location of the tin duff.

' In the drawing similar reference characters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawing, the door comprises a front frame 10 which is rectangular and is provided with rearwardly pro ecting inner and outer flanges 11 and 12 respectively, bordering the sides and the top of the frame. The shape of this frame will vary, of course, with different stove designs.

This front frame is of cast metal. On the inner face of the outer flange 11 are a number of lugs 13, which are cast with the frame, and at each corner of this outer flange 11 is a triangular inwardly projecting flange let. Abackplate 15, of sheet metal, rests against the rear edge of the inner flange 12 and on the ends of the lugs 13, and is provided with corners 16 which are displaced slightly out of the plane of the body of such back plate 15 so as to extend under the cornerfianges 14:. These flanges thus serve to hold the back plate firmly against the front plate. The only additional fastenings necessary to hold the back plate 15 in placeare a small number of screws 17, which extend through this back plateinto internally threaded circular lugs 18 projecting from the rear face of the cast frame 10, and these lugsare the only parts which require machining. The corner flanges 14 coacting with the centrally disposed screws 17 make fastening at points other thancentrally at each side unnecessary, and the door is very effective with but a single screw at each side, In the usual construction many screws are required. Because each side is provided with but a single point of fastening, there is no warping of the structure because the sheet is free to expand and contract.

The flanges 14 are preferably formed by the use of tin duffs, which both make the flanges stronger and facilitate their manufacture. In the use of these tin dui'fs, the pattern 20 for the cast frame 10 has an outer flange 21 corresponding to the flange 11 ofthe frame, and set in the corners formed by the flange 21 is a fillet 22 which extends less than the full height of such flange and is provided 011 its upper surface with a projecting pin 22, conveniently formed by driving a headless tack into the fillet 22. WVhen the frame is placed in the lower part 23 of the mold and sand 24: placed around it, and this lowerpart of the mold 23 has been inverted with the pattern within it, the open or concave part of the pattern is uppermost, bringing the pins 22 at the various corners also uppermost. Then a tin duff 25 is placed on each fillet 24, these tin duifs being of the shape shown in Figs. 3 and 4 and provided with a hole 26 for fitting over the projecting pins 2.2. The tin duifs 25 extend inward from the ll G corners beyond the edge of the fillet 22, and are of a general triangular sha e, being provided along the hypotenuse of this triangle with a down-turned flange'27 which at its lower edge is provided with an inwardly turned flange 28 which extends parallel to the body of the tin dufl' backward toward the fillet 22. After the tin duffs are in place, the upper part or cope 29 of the flask is placed on the part 23 thereof, and is filled with sand 30,wh ich sand 30 projects downward into the concave part of the pat-i tern 20 and beneath the tindufl 25. The

upper part of the flask is now removed from the lower part, carrying the sand 24 and the tin dufi 25 with it; then the pattern is removed, the two parts of the mold placed together again, and the metal poured into the flask in the usual manner. This metal forms the frame 10 of the stove door, flowing around the edge of each tin duff and against part of its surface and through the hole 26 so as to make the tin duff an integral part of the frame.

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

1. A stove door, comprising a cast metal frame which has inner and outer rearwardly projecting flanges and other flanges which Copies of this patent may be obtained for jecting flange and other flanges which pro-' ject inwardly from the corners formed by the outerfla'nge, a flat back plate of sheet jecting flange and otherflanges which project inwardly from the corners formed by the outer flange, a flat back plate of sheet metal which fits against the back of the cast frame and corner which extend under said corner flanges of the frame, and means for rigidly fastening the said plate at a single point toward each side and end.

41-. A stove door, comprising a cast metal frame having anouter rearwardly projecting flange and-an inner rearwardly projecting flange, filletsin the corners of said rearwardly projecting flange spaced from the front of said frame, and a metalback plate resting on said inner flange and having its corners inserted between said fillet andthe front of the frame. i

5. A stove door,- comprising a polygonal cast metal frame having an outer rearwardly projecting flange, and fillets in the corners of said flange and integral therewith, the said fillets being spaced from the front of said frama In witness whereof, I have hereunto set my hand and seal. in the presence of two witnesses.

GEORGE B. JONES. [Ls] Witnesses:

JAMES C. PATTEN, MAURIonE. SOUTH.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. c

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