US1128755A - Oven. - Google Patents

Description

' 2. E. GARLSGN.

OVEN.

APPLICATION. FILED DEC. 4, 1913.

Patented F870" 16, 1915.

2 SHEETS-SHEET 1.

77? IN VENTOR.

oi Sfiredenb/r E. Carlson:

WITNESSES.- 1 AM" 4% m AM A TTORNEY.

F. E. OARL$0N.

OVEN.

APPLIGATION FILED D1304, 1913.

div-w a Patented Feb. 16, 1915.

Z SHEETS-SHEET 2.

IN VENTOR. flederick E Carlson.-

m1. ATTORNEY.

till

anti onmp 1:

u t: ah CLARK, nncrrour. I

015 "NEW BRITAIN, CONNECTICUT, A CORPORATION 0F CON- UVEN.

specification of Letters Patent.

original teem net flugust r, isle, flerial no. ream. Divided and an application filed December a, ma Serial no. 80t,6t0.

eral mechanical. construction of the body of the oven, and with additional features of construction which will be more particularly pointed out in the following specification.

The invention is illustrated in its adaptation to use in an electric oven.

In the drawings liigure 1 is a front view of an oven embodying my invention. Fig. 2 is a sectional view on the line 2 2 or e ne s a respe e-Yew of the oven with apart of oneside wall broken away. Fig. 4L is a detail, viewof the door construction; Fig. 5 is a sectional view on the line 5 5 of Fig. l. ltig, 6 is a detail view showing the construction of the main body of the oven.

Referrin first to the mechanical constrnction o the oven, the mainbody' ofthe oven, comprising the sides a, b, and the back c, is a double-walled structure formed preferably from a single sheet of thin stock of proper width, which is folded about a form to the proper shape the ends of the strip being united by an interlocking seam as at d. Sheets of asbestos e are laid against the inner faces of these walls, and then spacers f are inserted. to revent colla se. The top and bottom are ormed by fitting within the walls of the body dished plates g, It, having at their side and rear edges channeled lateral flanges g, h, forming pockets 9, k into which the top'and bottom edges of the inner wall of the body fit, the edges of the flanges abutting against the outer wall of the body.

The ends of the sides, a, b, and the fronts of the dished plates g, h, form'the door opening in the front of the oven. These dished platesare lined with sheet asbestos,

' and then receive spacers f and are inclosed till by cover plates 2'', h, the edges of which are bent down as indicated at a", k, to cover.

over the joints between the body and the top and bottom. Corner plates Z finish the top, and the feet at are located at thecorhere of the bottom. Tie rods a pass through the cover plate a, the dished plates 9, h, the cover plate Is, and the feet m, and have nuts threaded to their lower ends, by means of which the parts of the oven are bound to' prises a deeply channeled member s of rec-- tangular form, having edge flanges, about which the edges of a flnished plate a are folded, forming aledge about the inner margin of the frame, on. which -the. panel at of some transparent material, as glass, maybe supported, held in place by the angle 'strips'w whichare secured by the clips a which en-- gage the adjacentiends oftwo of the angle strips. It is desirable to hold the panel sere y i P a e. and th s rs.v en a e e. an begstrip's rather than the material of the panel and so avoid damaging it.

The door members of the hinges are formed integrally with the door structure by rplling over the muckles s from the "edge of the. channeled member s. The door construction is of sheet metal andisvery stifl', preventing sagging or warping, and the knuckles formed integrally with the frame make a very rigid hinge support. The pivoted door latch w has a slotted end which engages a headed pin w secured in the end of the side wall a, and the slotted end is twistedslightly to have a cannning action on the pin to cause the door to be tightly shut and its flanges to lie closely against the edges of the door opening to prevent the escape of heat from the interior of the oven. Tf desired, a device which l[ have called a receptor, indicated at l, may be used as the central offset portion, raised slightly above the floor which permits the metal to move under expansion and contraction without occasioning the snapping which is objectionable in structures of this sort.

Of course the main body of the oven could be made from more than a single piece of metal, though a small number is preferable. I am also aware that the structureflhere shown and described is susceptible of modifi-- cation and change without departing from the spirit of the invention as set forth in the appended claims. I

This application is a division of my application serially numbered 7 83,47 5 filed August 7, 1913. 3

I claim as my invention:

1. In a device of the character described, a three-sided, double-walled structure formed from sheet metal bent to shape and constituting the sides and back of the main oven body, double-walled top and bottom members fitted to the top and bottom ofthe main body, the inner walls of said top and bottom members fitting within the walls of the main body, spacing the said walls from one another, laterally extending flanges on the inner walls of the top and bottom members overlying the space between the walls of the main body member, tie rods at the corners binding said body between saidflanges, the front oftsaid oven body being formed by the ends of the sides of the main body and by the edges of the top and bottom members, and a door closing the opening in the front of saidoven, hinged to-the end of lateralflanges thereon engaging and spacin the, walls of the sides and. back at top an bottom, cover plates for the top and bottom members, flanges thereon embracing the upper and lower edges of the body, and means for securing said cover plates and body together.

3. An oven, the main body of which, comprising the sides and back, is a spaced double-walled structure formed from sheet metal bent to shape and with its meeting edges secured together, recessed top and bottom members snugly fitting within the inner walls of the sides and back, and with their front edges flush with the ends of the sides, lateral flanges thereon engaging and spacing the walls v of the sides and back at top and bottom, cover plates forthe top and bottom members, flanges thereon embracing the upper and lower edges of the body, and tie rods at the corners uniting said cover plates and binding said body between them.'

FREDERICK E. CARLSON. Witnesses ARTHUR '1. Evans, Jnssn J. Fosrnn.

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