US2319004A

US2319004A - Door

Info

Publication number: US2319004A
Application number: US397464A
Authority: US
Inventors: Lotter William
Original assignee: American Stove Co
Current assignee: American Stove Co
Priority date: 1941-06-10
Filing date: 1941-06-10
Publication date: 1943-05-11
Anticipated expiration: 1960-05-11

Description

\ W. LOTTER May ll, 1943.

DOOR

zsheets-sheet 1 Filed June lO, 1941 ikg,

W. LOTTER sheets-sheet 2 Filed June lO, 1941 231/ V64/ rc1? mi /SrrafP/YEYJ Patented May l1, 1943 UNITED STATES PATENT OFFICE DOOR Application June 10, 1941, Serial No. 397,464

` (c1. en -36) 9 claims.

This invention relates to a door and more particularly to an unitary double glass panel carrier for a. door and which is particularly applicable to doors such as are used on ovens or other like chambers of cooking appliances. l

The primary object of the invention is the provision of a novel and improved unitary glass panel carrier for a door, the construction and arrangement of which is such as to greatly simplify the door construction and thereby materially reduce the cost of manufacture of a door of the present type.

A still further object of the invention is to provide a glass panel carrier or retainer which l is an unit independent of the door and as such is easily and quickly removable which not only provides for leasy access to the space between the glass panels for cleaning purposes but also simplifies the assembly of the door and thereby reduces the cost of fabrication of the door.

A still further object of the invention is to provide a metal door which has the foregoing attributes and advantages.

Other specic objects, novel features of construction and improved results of the invention will appear from the following description together with the accompanying drawings.

In the drawings:

Fig. 1 is a front view of a door embodying the invention.

Fig. 2 is a' fragmentary horizontal section taken on the line 2-2 of Fig. 1.

Fig. 3 is a vertical sectional view taken on the line 3-3 of Fig. 1.

Fig. 4 is a fragmentary perspective view of the rear side of the independent glass carrying unit.

Referring now to the drawings and using like characters throughout the descriptionto designate similar parts, A designates a metallic door front panel which in accord with usual practice is suitably enameled and has throughout its perimeter an lnturned edge. I to provide a panlike construction which telescopically receives the out-turned edge 2 of a metallic door liner B which liner, as will hereinafter appear, is of panlike construction so that when the front panel 'and liner are assembled a space or chamber exists between them which is filled with suitable insulating material 3. It is conventional practice to enamel the door liner not only for the purpose of enhancing its appearance but to protect this member from the intense-oven heat to which it is subjected.

Centrally the front panel A\ is. provided with an opening having an lnturned peripheral edge 4.

In alignment with said front panel opening the liner is provided with an opening slightly larger than the front panel opening and this opening in the liner is defined by a Wall 5 the outer edge 6 of which abuts the inner face of the front panel as appears in Fig. 2 of the drawings. This liner wall 5 forms one of the walls of the chamber which is filled with insulating material 3.

The liner B is of a particular shape in cross sectional configuration having a portion 'I which parallels the front door panel and a portion 8 which is bent or extends at right angles to the aforementioned portion I and a rear face portion `9 which parallels the front panel A but is spaced therefrom a much greater distance than is the aforementioned liner portion 1. This arrangement provides a door having a very considerable degree of thickness and a door in which the central opening is of considerable depth.

It is within this comparatively deep door opening that the glass panel carrier C is mounted. This carrier comprises a plate I0 having throughout its perimeter a side wall II which abuts the portion 9 of the liner B and a central opening defined by a wall I2 which is preferably in substantial alignment with the inner end of the wall Il dening the opening in the door front panel A. The edge of this wall defining the wall I2 abuts the inner glass panel D. At-its four corners the panel or plate C is indented to provide semispherical chambers I3 for the reception of the heads of bolts or screws which constitute the sole means for securing this glass panel carryingr unit to the door. These bolts or screws I4 threadedly engage threaded openings in the U-shaped members I5 which are disposed within the four inner corners of the insulation lled chambers of the door.

The door liner is secured in similar fashion to the door front panel by bolts I6 threadedly engaging suitably threaded openings in the U-shaped members I'I. This constructionre:- moves completely any unsightly bolt or screw head at the outer side of the door construction.

The means for carrying the inner glass panel D andouter glass panel E comprises a metallic construction which is preferably welded to the inner face of the panel C. This construction at its vertical sides provides oppositely disposed and aligned inner and outer channels I8 and I9 respectively which are spaced apart and interconnected by a wall 20. At its top and bottom this construction is provided with horizontally disposed channels 2I and 22 having open upper ends and I9 respectively. A pair oi.' horizontally elongated slots are disposed adjacent the top of the construction in alignment with the bottom channels 2l and 22 and are separated by a channel having a bottom 3| and vertically disposed side walls 32 which extend upwardly beyond the slots and form abutments for'the glass panels. These channels are of the proper size to snugly receive the glass panels 4or plates D and E to support and hold them against any but vertical movement.

The construction embodying these channelways is provided at its sides and bottom with

wall portions

23 and 24 which abut and are electrically welded or otherwise suitably secured to the inner face or side of the plate C.

By reference to Figures 2 and 3 of the drawings it will be seen 'that when the construction is completely assembled the glass panels provide a window through which cooking operations in the oven can bevisually ascertained as desired and that the door is substantially leakproof as there is a seal at the point 25 between the. carrier panel C and the door liner B and that there is a proper seal at the

points

26 and 21 between the inner and outer glass panels and the carrier plate C and front door panel A respectively.

From the description given it will be apparent that the window portion of this door is an unitary structure which carries the glass plates which can be quickly and conveniently removed from the door by merely loosening the four bolts or screws which construction is highly desirable in that it is unnecessary to dismantle the door itself in .any respect to get at the window glasses. Upon removal of the window carrying unit either or both of the glass panels D or E can be freely lifted or slid upwardly from the carrier through the slots adjacent the walls 32 as will clearly appear in Fig. 4 of the drawings. Removal of either' glass panel will make it possible to clean the opposed faces of the glass panels and the space between them.

I claim:

1. An improved construction comprising, a door of substantial thickness having an opening therethrough, the opening at the front of the door being of smaller dimensions than at the rear to provide at the door front a shoulder throughout the perimeter of the opening, a panel removably secured to the rear side of the door and provided with an opening in registry with the door opening, a pair of transparent plates carried by said panel and supported in spaced parallel relationship thereon, said plates being disposed within said door opening with one of said plates sealing the opening of said panel and the other of said plates engaging said shoulder and thereby sealing said door opening "at its front, and said plates accompanying said panel when said panel is removed from said door and being freely removable from said panel.

2. An improved construction comprising, a door oil substantial thickness having an opening therethrough, the front of said door overhanging said door opening to provide a shoulder throughout the perimeter of the opening, a panel removably secured to the rear side of said door and provided with an opening registering with the door opening, said panel at its inner side and within said door opening provided with side and bottom channelways adapted to receive and support a pair of transparent plates in separated parallel relationship, a pair of transparent plates in said channelways, the innermost of said plates sealing the opening through said panel and the rear end of said door opening, and the outermost of said plates engaging said shoulder and sealing said door opening at its front end, and said channelways being open at their tops to permit ready removal of said plates from said panel when said panel is removed from said door.

3. An improved construction comprising, a door provided with an opening extending through the outer and inner sides thereof, said door being of such substantial thickness as to widely space the outer and inner door sides and to make said door opening of considerable depth, a thin panel provided with an opening extending through the outer and inner sides thereof, means detachably securing said panel to the face of the inner side of said door with said door and panel openings in registry, means carried by the inner face of said panel to support a pair of transparent plates in separated parallel relationship, said plates being free for slidable disconnection from their support when said panel is removed from said door but being positioned within said door opening and non-removable from their support when said panel is secured to said door, one of said plates acting to close the opening through said door, and the other plate acting to close the opening through said panel.

4. A construction such as dened in claim 3 wherein, the door opening at its end adjacent the front of the door is provided with a circumferential shoulder adapted to engage the outer Vface of one of 'said plates, and the panel opening at its inner side is provided with a peripheral and inwardly extending wal1 adapted to engage the outer face of the other plate.

5. A construction such as deilned in claim 3 wherein, the means for supporting` the glass plates comprises a pair of vertically extending channelways adjacent each vertical edge of the panel and a pair of horizontally disposed channelways extending transverse the panel adjacent the lower horizontal edge of the panel, said vertical channelways having open upper ends to permit the plates to be freely slid upwardly and downwardly in said channelways, and the horizontal channelways having open tops to freely receive or release the lower ends of said plates as said plates are moved downwardly or upwardly in said vertical channelways.

6. A construction such as dened ln claim 3 wherein, the means for supporting the plates comprise a plurality of channelways mounted upon the inner face of said panel, a pair of said channelways extending vertically at each side of said panel opening and having open sides adjacent said panel opening and having open upper and lower ends. a still further pair of said chan` nelways extending horizontally across said panel below the lower edge of said panel opening and having open sides facing upwardly, said channelways supporting and holding said plates against displacement in any but a vertical direction. said plates being disposed wholly within said door opening and acting to close the same, andy the top of said door opening acting to prevent the removal of said plates from said channelways by movement in a vertical direction.

7. An improved construction comprising, a door provided with an opening extending through the outer and inner sides thereof, said door being of such substantial thickness as to widely space the outer and inner door sides and to make said door opening of considerable depth, a thin panel provided with an opening extending through the removed from said door, one of the sides o! said door opening preventing the removal of either of said plates when said panel is connected to said door, and at least one of said plates acting to close the said opening in said door.

8. The combination comprising, a door having an opening therethrough from front to back, a panel having an opening therthrough from front to back, said panel at its back provided with outwardly extending means for freely removably supporting atransparent plate, means securing said panel to the face Aof said door back with said door and panel openings in registry, said panel plate supporting means and said plate being disposed within said door opening. the surrounding wall of said door opening and said plate supporting means preventing the displacement of said plate when said panel is in place on said door, and said plate acting to close the opening through said door.

9. An improved construction comprising, a door provided with an opening extending'through the outer and inner sides thereof, a panel provided with an opening extending through the outer and inner sides thereof, means detachably securing y said panel to the door with said doorand panel WILLIAM LOTTER.