US860691A - Securing means for windows of oven-doors. - Google Patents

Description

No. 860,691. PATENTED JULY 23, 1907. e. F. moss.

SECURING MEANS FOR WINDOWS OP OVEN DOORS.

APPLICIATION FILED JAN. 18. 1907.

UNITED STATES PATENT OFFICE.

GEORGE F. PROSS, OF CINCINNATI, OHIO, ASSIGNOR TO THE E. H. HUENEFELD COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

SECURING MEANS FOR WINDOWS OF OVEN-DOORS.

Specification of Letters Patent.

Patented July 23, 1907.

Application filed January 18, 1907. Serial No. 352,856.

f0 all whom it may concern:

Be it known that I, GEORGE F. Pnoss, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Securing Means for Windows of Oven-Doors, of which the following is a specification.

My invention relates to securing means for the windows in the doors of portable ovens, such as the ovens used in connection with gas, gasolene or other vapor stoves. It will be understood that ovens of this character are made of sheet metal, the doors being also made of sheet metal, and that in modern practice it has become the custom to provide the doorwith an opening covered by transparent material, usually glass, through which the interior of the oven may be viewed.

It is the object of my invention to provide novel securing means whereby the glass may be readily and firmly secured to the oven-door by means which are cheap in construction and readily applied and which present a neat appearance after being applied, and when applied cause a close junction between the sheet metal of the door and the transparent sheet for preventing the loss of heat from the oven while providing for a window of considerable area through which the interior of the oven may be viewed.

The invention will be further readily understood from the following description and claims, and from the drawing, in which latter:

Figure 1 represents a perspective view of an oven having my improved device applied thereto. Fig. 2 is a plan view of my improved device with the oven door broken away. Fig. 3 is a cross-section of the same on the line of Fig. 2. Fig. 4 is a cross-section of the same on the line y y of Fig. 2. Fig. 5 is a plan view of the retaining clip. Fig. 6 is an enlarged plan view of my improved device partly broken away showing the application in enlarged view of the retaining clip. Fig. 7 is a cross-section of the same on the line zz of Fig. 6; and, Fig. 8 is a detail in perspective showing the corner of the opening of the inner sheet which receives the clip.

1 represents the oven and 2 is the door thereof, suitably hinged thereto and which when open may be held by chains 3. I

4 is the window of the oven door and is of glass or may be of other transparent substance. The door is made of sheet metal and comprises an outer sheet 5 and an inner sheet 6 suitably secured together at the edges, there being a space 7 between said sheets, the sheets merging toward their edges where they are joined. The outer sheet has an opening 8 surrounded by a bead 9 which merges into a lip 10 inside the bead for forming the edge of the opening, which is shown annular. The inner sheet 6 is provided with an opening 11 shown square in form. There is a ledge 12 at the edge of this opening for receiving the glass. This ledge is countersunk, having a side wall 13. The ledge is interrupted at each of the corners of the opening for forming a space 14. The ledge 12 lies to outside the lip 10 and is sunk to the lateral plane of the inner edge of said lip so that when the glass is received by said ledge it may contact the said lip for making a close joint between the lip and the glass to prevent the escape of heat from the oven.

The inner plate, at the opening, is provided with tongues 15, of which I have shown two at corners of the opening. These tongues are preferably integral with the inner sheet. The respective corners of the glass are arranged to be inserted under these t ngues and above the ledge adjacent thereto. Clips 16 are adapted to be inserted in the inner sheet at the other corners of said glass, the glass resting on the ledge and the clips extending over the glass. This construction secures the glass between the ledge and the tongues 15 and clips 16. I prefer to give'each tongue a slight bend toward the outer plate so that its edge 17 may v contact the glass'with resilient pressure so that different thicknesses of glass may be accommodated and held securely.

The clips 16 comprise a head 18 and a shank 19, the sides 20 of the head preferably having an angle to correspond with the angle of the sides 21 of the opening 11 so that when the clips are in place their heads 18 may correspond as near in appearance as possible to the tongues 15. The tongues are formed up out oi the metal cut away to form the interruptions or spaces 14 in the ledge of the inner sheet at those corners where the tongues are located, and the shanks of the clips 16 are inserted through the interruptions or spaces 14 at those corners where said clips are located. I provide the inner sheet with slots 22 23, forming a web 24- between said slots. I prefer to sink this web for forming a groove connecting the mating slots. The shank of the clip is inserted through the interruption or space 14 and the mating slots, above the web, the shank lying in the groove.

I prefer to provide an annular bead 25 surrounding the opening 11 of the inner sheet, the said bead extending inwardly between the sheets. I also prefer to provide the clip with an outwardly extending knob 26 at the point where, when the clip is inserted, the knob may impinge the wall 27 of the slot 22 so as to retain the clip in position. This knob preferably also impinges the outer edge of the bead 25,as the outer edge of the bead and the inner wall of the slot 22 are preferably coincident. There is suflicient resilience in the metal to permit the shank with its knob to be inserted, the knob however preventing accidental retraction of the clip. This knob may be used as a protection, but the resilience of the metal is sullicient to hold the parts in place Without its employment if this is desired. In order that the shank may be readily inserted, I prefer to provide the inner edge of the web 24 with a slight bend 28 for widening the mouth of the slot 22.

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

1. In combination, a door for a portable oven comprising an outer sheet and an inner sheet, the said inner sheet having an opening, a transparent sheet received by said opening, and a clip for retaining said sheet in place comprising a head above said transparent sheet and a shank, the said inner sheet being provided with a slot for receiv ing said shank.

2. In combination. a door for a portable oven comprising an outer sheet and an inner sheet, the said inner sheet having an opening, a transparent sheet received by said opening, and a clip for retaining said sheet in place, said clip comprising a head above said transparent sheet and a shank, the said inner sheet being'provided with a plurality of slots having a web therebetween, the said shank extending through said slots above said web with the inner end of said shank received under said inner sheet, substantially as described.

3. In combination, a door for a portable oven comprising an outer sheet and an inner sheet, the said inner sheet having an opening, a transparent sheet received by said opening, and a clip for retaining said sheet in place, said clip comprising a head above said transparent sheet and a shank, the said inner sheet being provided with a plurality of slots having a web therebetween, the said shank having a knob for impinging the wall of one of said slots and thereby holding the clip against retraction, substantially as described.

4. In a securing means for windows of oven doors, the combination with the inner and outer sheets of the oven door, each of said sheets having an opening, the said inner sheet having a countersunk ledge at the wall of said opening with integral tongues on said inner sheet at said opening, a transparent sheet above said countersunk ledge and under said integral tongues, and clips respectively provided with a head above said transparent sheet and a shank, the said inner sheet having a plurality of mating slots therein for each of said shanks with connecting web therebetween, the said shanks respectively inserted through said mating slots and above said web therebetween, substantially as described.

5. In combination, an oven door having an outer sheet with an opening therein and having an annular lip surrounding said opening extending inwardly, an inner sheet having an opening therein registering in position with said outer opening, said inner sheet at its opening having an inwardly extending countersunk ledge located to the side outside the inner edge of said annular lip, said inner sheet being also provided with integral retaining tongues, a transparent sheet resting on said ledge and received under said integral tongues, the said inner sheet being provided at a plurality of places adjacent said inner opening with a plurality of mating slots and connecting web therebetween, and clips each having a head impinging the outer side of said transparent sheet and a shank inserted through said respective mating slots and above said web therebetween and under said inner sheet adjacent said head, the said inner sheet covering the outer end of said shank, substantially as described.

6. In securing means for windows of oven doors, the combination, with the inner and outer sheets of the oven door, the said sheets having registering openings, the said outer sheet having a lip surrounding its opening, the said inner sheet having a ledge about its opening located to the side of and outside the said lip, the said ledge being countersunk to the lateral plane of said lip for permitting the transparent plate to impinge said lip, of a clip adapted to impinge the inner side of said transparent plate, said clip having a shank and said inner sheet having a plurality of slots and intervening web for said shank. substantially as described.

7. In securing means for windows of oven doors, the combination, with the inner and outer sheets of the oven door, the said sheets having registering openings, thesaid outer sheet having a lip surrounding its opening, the said inner sheet having a ledge about its opening located to the side of and outside the said lip, the said ledge being countersunk to the lateral plane of said lip for permitting the transparent plate to impinge said lip, of a clip adapted to impinge the inner side of said transparent plate, said clip having a shank with a knob thereon and said inner sheet having a plurality of slots and intervening web for said shank with said knob impinging the inner wall of one of said slots, substantially as described.

In testimony whereof I have subscribed my name hereto in the presence of two subscribing witnesses.

GEORGE F. PROSS.

Witnesses:

THEODORE C. JUNG, MAYME WALTER.

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