US1008414A

US1008414A - Oven-door.

Info

Publication number: US1008414A
Application number: US59198810A
Authority: US
Inventors: William R Jeavons
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-11-12
Filing date: 1910-11-12
Publication date: 1911-11-14
Anticipated expiration: 1928-11-14

Description

T in.

WILLIAM R. JEAVONS, OF CLEVELAND, OHIO.

OVEN-DOOR.

Specification of Letters Patent.

Patented Nov. 14, 1911.

Application filed November 12, 1910. Serial No. 591,988.

To all whom it may concern:

Be it known that I, WILLIAM R. JEAvoNs, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Qhio, have invented a certain new and useful Improvement in Oven-Doors, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates to oven doors and, while some of the features are of general application, the improvements shown herein are more particularly adapted to oven doors for gas and oil stoves and are in tended to enable the operator to observe the conditions which exist within the oven through one or more panes of transparent material, the construction by which the said pane or panes are secured in place being economical of production, extremely eflicient in operation, and permitting the ready insertion of a pane or panes into, and their removal from, the door.

A further object of the invention is to provide a door of this type in which crdinary glass may be used for the panes without sacrificing any of the efliciency of the oven, while the construction reduces to a minimum the liability of breaking such panes.

With the foregoing objects in, view, the invention may be defined further and gen erally as consisting of the combinations of elements embodied in the claims hereto annexed and illustrated in the drawings forming parthereof, wherein- Figure 1 represents an elevation of an oven door constructed in accordance with my invention, showing the same applied to an oven of ordinary or standard type; Fig. 2 a detail in elevation of the inner face of the door Fig. 3 a vertical sectional view corresponding to the line 33 of Fig. 2; and Fig. 4 is a transverse sectional view corresponding to the line 4-4 of Fig. 2.

The door illustrated herein is composed of a sheet metal outer plate 1 and a sheet metal lining plate 2, the lining plate be ing secured in place by bending the edges of the outer plate around the edges of the lining plate, as shown at 3. Near their outer edges the outer and inner plates are spaced apart by offsetting the body of the inner plate from the adjacent portion of the outer plate, forming a non-heat conducting space adjacent to the outer edge of the door. The outer plate 1 and the inner sheet metal, or lining, plate 2, also constitute frames for the reception of the panes of transparent material, to be described hereinafter.

The outer plate is concaved or bent inwardly to form a bearing for the inner plate or lining adjacent to the central, glazed portion of the door, as shown at 5, and the outer plate and lining plate are secured together by suitable rivets 6. In the embodiment of my invention shown herein, three transparent panels are provided, which panels are formed by panes of glass 7 and cooperating frames formed by the outer and inner plates. The central portion of the outer plate is open, with the exception of a pair of vertical frame members 8, which are preferably formed integral with the body of the plate. Each frame member 8 comprises a central flat body extending the entire distance between the top and bottom of the central opening, said body portion being provided at each lateral edge with a bead, overhanging a cooperating portion of the inner plate and forming therewith a slide-way for a glass pane. The bead referred to is shown as having an outwardlybent portion 9 extending away from the body of the frame member 8, an inwardly directed portion 10, extending toward the complementary part of the inner or lining plate and forming a smooth bearing surface for a pane, and an outwardly deflected edge 11. At the top and bottom of each pane opening, the edges of the outer plate adjacent to said opening are bent in the same manner, as the sides, as shown at 12, 13 and 14. v

The metal of the inner or lining plate is cut away to provide openings corresponding to those in the outer plate and the edges of the lining adjacent to such openings are treated as follows to form with the cooperating portions of the outer plate supporting frames for the panes of glass :At a short distance from the rivets 6 at each side of the central opening, the lining is bent inwardly or away from the outer plate, as shown at 15, and is then bent toward the opening to form a flange 16, overhanging the edge of the adjacent portion of the outer plate. The flange 16 will be bent so as to converge somewhat toward the outer plate, forming an acute angle with the flange 15.

The lining is provided with vertical frame members 17 corresponding to the vertical frame members 8 of the outer plate and secured to the latter by means of rivets 1 8. The side edges of the vertical members 17 are each bent inwardly or away from the outer plate, as shown at 19, and then convergently toward the adjacent portion of the outer plate, as shown at 20, the

flanges

15 and 16, 19 and 20 forming, with the co operating edges of the outer plate, vertical guides for a pane 7 At the bottom of each panel, the lining is bent inwardly or away from the outer plate, as shown at 21, thence upwardly, toward the adjacent edge of the outer plate, as shown at 22, and at its upper edge is bent inwardly or away from the outer plate, as

" shown at 23, thereby forming, with the up per edge of the flange 14, an upwardly flared guide for the reception and easy insertion of the lower end of a pane 7. This guide has the

rounded surfaces

13 and 22, which are opposed to each other and which bear against the pane. The inwardly projecting

portions

19 and 21 extend away from the outer plate a distance at least as great as the thickness of the thickest pane of glass which will be applied to the opening. The lining plate, being made of resilient metal and having the edge portions extending from the

flanges

19 and 21 deflected toward the plane of the outer plate, guideways are formed which will accommodate ordinary glass plates varying greatly in thickness and at the same time a tight joint is provided between each pane and the frame whereby leakage of hot air, etc., from the oven through the pane openings is prevented. The flexibility of the edge port-

ions

16, 20 and 22 is enhanced by the provision of the corner notches, to be described hereinafter.

At the upper edge of each panel opening, the lining 2 is cut away at a point above the 7 upper end of the bead 12, the lining projecting downwardly a sufficient distance to be engaged by the pane, when the latter is inplace, whereby the removal of the pane is not interfered with by the lining. The pane, when in place, will bear against the rounded surface 13 and the lining will not prevent a tight joint being formed at this lace. P At the junction of each

vertical side flange

16 and 20 with a bottom flange 22, the metal of the lining is cut away to form corner notches 24.

Among the advantages of the construction herein described are:

1817. Its ckeapness.-The frame construction for the glass panes is made up of the necessary parts of they oven door itself, and these parts are of light sheet metal. Furthermore, the operations by which the frame construction is provided are simple and inexpensive.

Qnd. Its darabz'lz'ty.The frame construction is so flexible that the door may be twisted, warped, or otherwise distorted without material danger of breaking the glass panes. This result is secured, not only by the light, yielding material of which the door as an entirety and the frames are constructed, but by the peculiar manner of con-- structing the inner frame member from the lining (including the arrangement of the rivets and the corner notches 24) whereby the edges of the lining which bear against the glass are free to flex or bend without exerting unnecessary pressure upon the glass.

3rd. [ts adaptability for ordinary panes of glass such as may be purchased by the ordinary consumer at small st0res.It is well known that ordinary glass varies greatly in thickness. The flexibility of the

flanges

16, 20 and 22 enables the frames to receive panes that vary greatly in thickness and at the same time the construction of the frames secures a tight joint between each pane and its frame, whereby leakage is pre vented. In cutting the pane openings in the outer plate, the edges are more or less rough. By bending these edges slightly outwardly, as shown at 11 and 14, the rough edges are kept out of any chance of contact with the glass.

4th. Convenience 0 f repZacement.Should any of the panes happen to break, it is an easy matter to remove the broken pane, and the construction of the frame permits of the convenient insertion of a new pane, by merely sliding the same downward Within the lateral grooves provided between the flanges of the inner and outer plates. The replacement is so simple that it can be accomplished by achild. By deflecting inwardly the portions of the outer plate, shown at 10 and 13, smooth bearings are provided for the glass outside of the inner edges of the outer frame member.

Having thus described my invention, What I claim is:

1. In an oven door, the combination of an outer sheet metal plate having an opening the-rethrough, an inner plate having a corresponding opening therethrough and secured to the outer plate, said inner plate being provided, at each side of and at the bottom of said opening, with a flange projecting away from the outer plate and a flange projecting laterally from the former flange toward the plane of the outer plate, there being corner notches provided at the junction of each of the latter side flanges with the corresponding bottom flange and the upper edge of such bottom flange being flared inwardly or away from the upper edge of the corresponding portion of the outer plate.

2. In an oven door, the combination of an outer plate having an opening therethrough, and a lining plate secured to the outer plate and having an opening therethrough com plementary to the opening in the outer plate, the portion of the outer plate above the opening therein being bent or deflected toward and then away from the inner plate to form a smooth bearing and the upper edge of the opening in the lining plate being located above such deflected portion of the outer plate.

3. In an oven door, the combination of an outer plate having an opening therethrough and having edge portions formed by bending the metal inwardly and then outwardly to provide smooth bearing surfaces, and a lining plate of sheet metal secured to the outer plate and having an opening therethrough complementary to the opening in the outer plate, the metal at the bottom and sides of the opening in the lining plate forming guideways with the adjacent portions of the outer plate and the upper edge of the opening in the lining plate being located above the inwardly deflected portion of the corresponding edge of the outer plate.

4. In an oven door, the combination of an outer frame member having an opening for a pane and having a bottom edge portion adjacent said opening deflected outwardly, of an inner frame member having a complementary opening and forming, with the former member, side and bottom guideways for apane, the upper edge of that portion of the inner member which is below said opening being deflected inwardly or away from the outer plate.

5.- In an oven door, the combination of an outer and an inner sheet metal frame member each having an opening therethrough, the openings being arranged to register, the metal. of the inner member adjacent to the opening therein being formed with an angular bend at the sides and bottom of said opening and being unbent or undeflected at the top of said opening, whereby an opentop guideway is formed between the inner and outer members for a pane, the metal of the outer member being bent toward the inner member at a short distance from the opening therein and having its edge portion defining said opening bent away from the inner member, whereby a smooth bearing is provided for the pane against the outer member.

6. In an oven door, the combination of an outer and an inner sheet metal frame member each having an opening therethrough, the openings being arranged to register, the metal of the inner member adjacent to the opening therein being formed with an angular bend on three sides of said opening and being unbent or undeflected at the other side of said opening, whereby an open guideway is formed between the inner and outer members for a pane, the metal of the outer member being bent toward the inner member at a short distance from the opening therein and having its edge portion defining said opening bent away from the inner member, whereby a smooth bearing extending substantially entirely around the opening is provided for the pane against the outer member.

7. In an oven door, the combination of an outer and an inner frame member each hav ing an opening therethrough, said openings being arranged to register, the metal adjacent to the side and bottom of the opening in the inner member being bent or deflected angularly and the metal at the top of said opening being substantially unbent or undeflected to provide an open-top guideway with the outer member, the corners formed between the bottom and side edge portions of the inner member being notched.

8. In an oven door, the combination of an outer frame member having an opening for a pane and having the metal adjacent to the bottom of said opening deflected inwardly,

.with the extreme edge portion of such metal deflected outwardly, and an inner frame member having a complementary opening and forming, with the former member, a substantially U-shaped guideway for a pane, the upper edge of that portion of the inner member which is below the opening being deflected inwardly or away from the outer member.

9. In an oven door, the combination of a sheet metal outer frame member having an opening for a pane, and a sheet metal inner frame member having a complementary opening and forming, with the former member, a substantially U-shaped guideway for a pane, the portions of the inner and outer members adjacent to the base of said guideway being bent toward each other near the opening and being bent away from each other at the edge of said opening to form a flaring guideway for the reception of such ane. p In testimony whereof, I hereunto affix my signature in the presence of two witnesses.

WILLIAM R. JEAVONS.

Witnesses:

J. B. HULL, BRENNAN B. lVEs'r.

Copies Commissioner of Patents,

Washington, D. G.