US964914A - Portable knockdown oven. - Google Patents

Description

W. HUENEPELD, PORTABLE KNOCKDOWN OVEN. APPLICATION 3mm) FER/A1910.

Patented July 19,1910.

2 SHEETS-SHEET 1. .1.

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6 8 0 JM U v $07 2 M M m W. E. HUENEFELD, PORTABLE KNOGKDOWN OVEN APPLICATION FILED 1 113.4, 1910.

Paiented July 19, 1910.

2 SHEET$SHEET 2.

WALTER E. HUENEFELD, 0F CINCINNATI, OHIO, ASSIGNOE TO THE E. H. HUENEFELZD.

co, or CINCINNATI, OHIO.

IGRTAIBLE anooirncwiv OVEN.

Specification of Letters latent.

Patented July 19, 1910.

Application filed. February 4;, 1910-. Serial No. M2318.

To all whom it may concern: I

Be it known that I, i VALTER E. HUENE- FELD, of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Portable Knockdbwn Ovens; and I do hereby declare the following to be a full, clear, and

exact description of the invention,such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in portable ovens, and particularly to those of the collapsible type, the object being to provide an oven which can be readily and quickly assembled by unskilled labor, and which when assembled, will be as strong and rigid as the ovens in which the parts thereof are bolted or riveted together.

A further object is to provide an oven of the collapsible type, in wl'iich the parts thereof are locked together by the lining.

With these objects in view, my invention consists in certain novel features of construction and combination of parts as will be more fully explained and pointed out in the claims.

In the accompanying drawings, Figure l, is a view in vertical longitudinal section of an oven embodying my invention. Fig. 2.is a view in horizontal section. Fig. 3 is a view in transverse vertical section. Figs. 4 and 5 are detail views, and Fig. 6 a view in. perspective showing the manner of assernbling the parts.

1 represents the top sheet of an oven, rectangular in shape and provided at its ends with depending straight flanges 2, and at its fronta'nd rear edges with the shallower depending flanges 3 the latter being bent inwardly and upwardly to engage the outwardly and downwardly bent flanges 4, at

' the upper'edges of the front plate 5 and the back plate 6, as clearly shown in Fig. 3. The lower ends of the front and back plates 5 and 6 are provided with the. inwardly, up wardl'y and outwardly turned flanges 7, as clearly shown in Fig. 3, in which the lower inwardly turned edges 8 of the depending flanges 9 of the bottom plate 1.0 rest. These flanges 9 of the bottom plate-rest against the inner faces of the lower edges of the front and back-plates, and these flanges 9 with their inwardly turned edges 8 act as braces for the front and back plates.

In assembling the oven, the'parts would be placed in position in the order above named, that is to say, the front and back would be attached to the top plate, and the bottom plate, which is open at the center, is then secured to the front and back plates. The front plate 5 and the rear or back plate 6, are each provided at its ends, with flanges 11 bent to form U-shaped grooves engaged by the inwardly turned ends 12 of the flanges 13 of the end plates 14, as shown in Fig. 2, and each end plate 15 is provided. with an inwardly and upwardly bent lower end 15, forming grooves for the reception of also provided at their upper ends with inwardly turned flanges 17, which form grooves for the upwardly flanged ends 18 of the top lining 19. After the top, front and back, bottom and one end plate have been assenr bled, the back lining 20. which is too large to be introduced through the door opening in the front 5 without bending, is introduced through the open end, after which the latter is closed by sliding its end plate into position.

All the outer plates of the oven are assembled endwise, the flanges of one plate engaging lapping flanges of the adjacent plates, and after the outer plates have been assembled, the back lining 20, which is provided at its ends and edges with outwardly projecting flanges 521, is placed in position against the back plate, the flanges 21 operating to hold thelining 2O slightly removed from the plate 6 thus forming an air space between them. After the back lining has been placed in position, the top lining 19 15 introduced through the door opening in the front, and moved into position, with its end flanges 18 engaging the top flanges 17 0f the end plates 14, after which the end l nings are placed in position. These end 1111- ings rest on the bottom plate 10, aga nst theunderside of the top lining 19, against the front face of back lining, and against the rear face of the front plate 5 and operate to hold all these parts in their proper relative positions. All the lining plates are flanged so as to rest in a position more or less removed from the outer plates, whereby air spaces-are formed to prevent undue radiadiameter, while the end and top linings stiffen the oven transversely. The end linings and-top lin'in also lock the end plates 14- against remova, hence in order to take the oven apart it is necessary to first remove'the end linings and top linin This leaves the ends 143 free to be etached. After the end linings have'been assembled,

they are 'loclredin place bythe deflector 2t and the rack or racks23.

The end linings are provided near their per ends with openings 25, and the end i1 'pifates are provided near their lower ends Jwithopenings 26 to provide for ventilation without material loss of heat. 7 7

From the construction and arrangement shown and-described it will be seen that the various members comprisin the oven may be readily and easily assem led, and when assembled form a rigid substantial structure, in which all the parts are securely held by interlocking seams and flanges, thus avoiding the use of bolts, screws, rivets, and

similar fastening devices. Again the parts are so located and SBCUI'Bd'Wltll relation to eachother, that they mutually brace and se-' cure one-another. No tools are necessaryin assemblin 5 the oven, or in taking it apart, and no ben in or twisting of any part is necessary in order to properly assemble it.

Having fully described my invention whatI claim as new and desire to' seeure'by Letters-Patent,'is:

tical members provided with supporting portions and removably connected tOgcther and a removabletop member, of a bottom member disposed within said vertical members andjremovably supported upon said supporting portions of. the vertical members,

and lining sheets disposed between the top and bottom members and resting upon-the.

bottom member and adapted to prevent vertical displacement of the latter.

2. In an oven the combination with vertical members provided with flanges at their lower edgesand a top member, of a bottom member disposed within and supported by a plurality of said vertical members, said bottom-member provided with a plurality of flanges interlocking-with the fl'angeson adjacent vertical members for preventing vertical displacement of the bottom and lining sheets disposed between the top and bottom members.

3. Inan'oven, the combination with a top member and vertical members connected seams therewith, said vertical members having in wardly projecting flanges at their lower edges, of a bottom member removably supported upon said inwardly projecting flanges, and lining members resting up u said bottom member and preventing vertical displacement thereof.

4;. In an oven, the combination with a top member and. vertical members, the latter having inwardly .and upwardly vturned flanges at their lower edges, of a bottom member provided at its edges with downwardly projecting flanges entering the grooves formed by the flanges at the lower edges of the vertical members, and lining sheets resting upon the bottom member and preventing vertical displacement of the latter.

5. A knockdown or collapsible oven comprising a top member, vertical members removably connected together and removably connected with the top member, said vertical members having inturned flanges at their lower edges, a bottom member provided with depending flanges at its edges removably mounted in the in-turned flanges at thelower edges of the vertical members, and lining sheets disposed between the top imd bottom members and resting upon the .atter.

vertical members, and a bottom, two opposltely disposed vertical members having inwardly turned flanges at the upper ends, of 1.. In an oven, the combination with ,ver-f a top lining having flanges interlocking with said flanges on the vertical members for preventing endwise displacement of said vertical members and vertical lining members for holding the top lining in place.

7. In an oven the combination with a top, bottom and vertical members detachably connected, two oppositely disposed vertical nenibers having inwardly turned flanges at their-upper ends, of a top lining having flanges interlocking with said flanges on the vertical members for preventing endwise movement of the latter, ertical lining members for holding the top lining in place and racks or shelves for holding said vertical lining members in place. In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

W'ALTER E. HUE'NEFELD.

lVitnesses A. N. MITCHELL,

A. W.-Baiorr r.

6. In an oven thecombination with a top,

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