US2489962A - Oven door - Google Patents

Description

Nov. 29, 1949 c. L. HARDwlcK 2,489,962

OVEN DOOR Filed Nov. 29, 1946 2 Sheets-Sheet 1 Nov. 29, 1949 c. l.. HARDwlcK 2,489,962

OVEN DOOR Filed Nov. 29, 1946 2 Sheets-Sheet 2 ineen/fof: Chf/'z'sfopfr L. Hardw/wwf" Patented Nov. 29, 1949 UNITED STATES eaTaNT oFFlcE 2 Claims.

My invention relates to stove doors and more particularly to that type of oven door which is provided with a covered opening or window therein, thus enabling the housewife to note the progress of the baking or roasting at any time desired without opening the door itself.

It has been the custom heretofore to cover the Window opening in such doors with at least two spaced panes, the air space between them servlng to reduce the escape of heat to a minimum. However, considerable trouble has been experienced due to the fact that the glasses could not be sealed tightly together and consequently, fumes and greasy odors from cooking would co1- lect in the inaccessible space between them and from where they could not be readily cleaned oi by the housewife.

One of the principal objects of the present invention is to overcome the foregoing objections by providing adequate seals at both outer and inner faces of the panes.

Other objects and advantages of my invention will be apparent as the description is considered with the accompanying drawings, in which:

Figure 1 is a perspective view of a stove showing my invention installed in the oven door thereof;

Figure 2 is a side elevation showing the door removed from the stove;

Figure 3 is a rear view of the door removed from the stove;

Figure 4 is a front face view of the lining plate and its brace member or plate disassembled from the front plate and showing the manner in which the window glass is attached in place.; Figure 5 is a section on line 5-5 of Figure 4; Figure 6 is a section on line 5 6 of Figure 4; lFigure 7 is an enlarged fragmentary detail view on the line 'I-l of Figure 4;

Figure 8 is an enlarged fragmentary detail view taken on the line 8--8 of Figure 4, and

Figure 9 is an enlarged fragmentary detailed view of a modied form of window unit showing the use of three spaced panes.

Referring more particularly to the drawings Ik;

denotes a cooking stove or range comprising a body 2 supported upon a base 3 and provided with top burner openings 4. The body 2 is also provided with side utility compartments 5, a

single bottom utility compartment 6 and an oven compartment l, all of conventional construction. The oven opening is normally closed by a door 8 hinged at its bottom edge in any desirable manner, not shown.

The oven door 8 consists of a front enameled rectangular sheet metal plate 9 and a back lina bottom edges and adapted to receive or lit snugly over corresponding flange I 2, projecting outwardly or forwardly from the side, top and bottom edges of the lining plate Ill. The bottom horizontally disposed portion of inwardly or rearwardly extending flange II is formed with an upwardly bent extension I3 which prevents separation of the plates 9 and I0 at their lower ends. The upper end of the lining plate I0 seats against arpair of spacing brackets I4, only one of which is shown, secured to and projecting rearwardly from the upper rear vface of the front plate 9. These brackets are provided with apertures I5, which register with corresponding apertures IB in the lining plate for a purpose presently described. By rst inserting-the lower end of the lining plate behind the extension` I3 the lining plate member I0 can be readily moved into place within the confines of flange II, and in position to be secured to theUfront-'plate 9. This is accomplished by means of headed screws 50, adapted to be inserted forwardly through apertures I6 and thence through apertures I5, in the order named. Any suitable means, not shown, is employed to hinge the lower end edge of the oven door 8 to the stove body 2, and curved arms 20 projecting rearwardly and downwardly from the sides of ange I 2, are formed with hook shaped ends 2| adapted to be connected to conventional spring mechanism, not shown, for normally maintaining the door 8 in closed or open position. Both front plate 9 and lining plate I0 are provided with rectangularwindow openings Il and I8 respectively.

Secured snugly to the lining plate in any suitable manner, as by welding contacting areas, isA

a brace member 0r plate I9, conforming in general outline and shape with plate Ill, and serving to brace and reinforce the lining member or plate IQ. This brace member is formed with a rectangular window opening 22 which, generally speaking, registers with the window openings I 'l and I 3 just described andthe intermediate portionv of the brace member is bellied forwardly, as at 35, from the correspondingly rearwardly bent or bellied adjacent portion 36, of the lining plate I, for a purpose presently described.

The window openings previously described are normally closed by a readily assembled and disassembled glass holding unit or member 23 in Which spaced front and rear glass members 24 and 25 are respectively supported. The unit 23 comprises front and rear rectangular frame members 2li and 2l and a U-shaped rectangular spacing member 28, of narrow thin sheet metal. The body of the front member 26, along the side, top and bottom portions thereof, is bent forwardly and thence inwardly to respectively provide flanges 29 and 3U against which the edges of the front glass member 2.4 seat. The body of the member 2l is correspondingly bent' rearwardlyand thence inwardly to provide flanges 3| and 32 against which the edges of the rear glass member 25 seat. It will be seen that the outwardly extending anges 33 and 34 of spacing member 28! are snugly received between the inner side edges of the opposing faces of the panes 24 and 25 and' also that these anges 33-34 seat againstthe anges 29 and 3|. The flat adjacent facesof the.

body portions of the frame members 2li-and 2lr seat flush against each other while the rear face ofthe'frame member 27|VV seats snuglyv against the bellied portion 35 of brace plate |9'; just mentioned' are secured' together and to the brace plate I9, by screws 31, whichl pass throughv aligned openings-38l and (iS-'inthe framemembers, and thence through threaded openings ilformed in the brace membery or plate I9, thus securing together the component parts of unit 23, and se c-urely attaching the latterA to the lining member or plate |01 When theparts are thus assembledv the flanges 33 and'34'of U-shaped spac ing member 28 crowd the-glassinto tight sealing contact with the flanges 3|I'and 32 while a tight sealv will also-be effected between the glass holdingl frame and the brace member |95. This prevents fumesl or greasy' productsffrom gaining access to the dead'air'space between the panes.A

The unit 23 can bei assembled' at the factory, an'dfif desired the frame members 26`and'21 may be welded, bolted ory crimped together thus making the unit tamper-proofl in the field; At the same time this' constructionl permits of ready dis-- assembly for replacing glass' when broken without interfering with the desired seal when reassembled. The oven compartment 'I is preferably provided with an electric bulb,r not shown, for illuminating the interior of this compartment.

From an inspection ofFigure 9-1 it will be seen" that by increasing; the depth'of either one or both ing window-openings, a brace plate connected to-v the forward'face of saidlining plate andformed with a window opening registeringwith said first mentioned window openings, said brace plate formed with a flat surface extending about the Window openings in said lining plate and said brace plate, a glass supporting unit comprising front and rear frame members having body portions in superposed relation to each other, each of said body portions of said frame members hav- -ing a flange extending at substantially a right angle thereto and a flange extending parallel with Said body portion, spaced panes having their respective. edges seated against said angular flanges, a channel member engaging with said angular flanges between said panes and forcing one side edge of each of the panes against one of the said parallel flanges, and means for connecting the body portions of said frame members together and. to saidv flat surface for supporting said panes in alignment with said window openings.

2; AnV oven door comprising a front plate formed with a rearwardly extending ange and a liningA plate having a forwardly projecting flange telescoping within said first mentioned flange, abrace plate` superposed upon the front face ofthe :lining plate, registering window open-S ings formed in said front plate, lining plate and-- brace plate, said brace plate having a forward`- bellied'portion extending about the window openings in saicllining plate and said brace plate, al

glass supporting unit comprising front and rear superposed frame members supported on said bellied portion of saidbrace plate, said front frame member having a portion thereof bent forwardly'and thence inwardlyV to form a forwardly extending. flange and' an and-sealed at their edges against said forwardly and rearwardly extending flanges on said frameI members, and a channel member between said REFERENCES ITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number- NameV Date 834,968 Christenson Nov. 6, 1906 2,008,345 Bl'anchford July 16, 1935 2,164,815" Hadjisky July 4, 1939 2,269,506 Anderson Jan. 13, 1942 2,319,004 Lotter May 11, 1943 2,325,773 Hennessy Aug. 3, 1943 2,394,176 Hillebrand Feb. 5, 1946 2,466,847 Hardwick Apr. 12, 1949 FOREIGN PATENTS Number Country Date 461,018 Great Britain Feb. 9, 1937 inwardly extending' angerespectively, said rear frame member hav-f' ingra portion thereof bent rearwardly and thence inwardly to form a rearwardly extending flange andan inwardly extending flange respectively, a front pane and a rear pane respectively seated-

Images