US1502091A - Metallic door - Google Patents

Description

' July 22 1924.

R. W. DISBRO METALLIC DOOR Filed April 25 1921 aww/whoa @Roger W. Dsbro Patented July 22, 1924.

UNITED STATES PATENT OFFICE.

ROGER W. DISBRO, OF CLEVELAND HEIGHTS, OHIO, ASSIGNOR T THE W. S. TYLER CO., OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

METALLIC DOOR.

Application led April 25, 1921. Serial No.. 464,437.

To all whom z't may concern:

Be it known that I, ROGER W. Diseno, a citizen of the United States, and a res1dent of Cleveland Heights, county of Cuyahoga and State of Ohio, have invented a new and useful Improvement in Metallic Doors, of which the following is a specification, the principle of the invention being .herein explained and the best mode 1n which I have 1o contemplated applying that principle, so as to distinguish it from other lnventions.

This invention relates to improvements in the construction of metallic doors, referring more especially to that class of doors used in elevator enclosures, and the general ob ject thereof is to provide a noveldoor which shall be light in weight, rigid and durable, and shall be simple and comparatively inexpensive to manufacture.

An object of my invention is to provide a door made from metallic tubular stock, in which the several parts, such as the sides and the top and base panels, are secured together by butt-Welding. By this construction, I 2l provide a very rigid, light weight door having smooth outer surfaces, and thus avoid the use of screws and nuts or similar fastening means which deface the appearance of the door and interfere with the movement of the same when used in a bank of sliding doors, as in elevator enclosures.

With the above and other objects in view, I have devised the novel door which I will now describe, referring to the accompanying drawing forming a part vof this specification and using reference characters to indicate' the several parts. To the accomplishment of the foregoing and related ends, the said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims.

The annexed drawin and the following description set forth in 5e nism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawing Fig. 1 is a front elevation of the frame of my novel door, per se, i

Fig. 2 a .horizontal section of the line 2-2 in Fig. 1 looking in the direction of the arrows;

Fin' a n vprfinnl snntinn through the uriner tail certain mecha.

panel of the frame, being taken on the line 3 3 in Fig. 1 looking in the direction of the arrows, and

Fig. 4 is a vertical section through the lower anel taken on the line 4-4 in Fig. 1.

In Fpig. 1 there is shown a door frame 10 comprising vertical side members 11 and 12 which are connected at their upper ends by a horizontal cross piece or panel 13, and at their lower ends by a base panel 14. The members 11 and 12 are constructed .from lengths of metallic tubular` stock, being shown in the present instance as rectangular tubing having straight sides.

The cross panel 13 is made from a len th of similarly constructed metallic tubing, preferably of the same thickness as the side members so as to provide llush joints between the several parts when assembled, as will be described. As indicated at 15, the ends of the part 13 are placed in abutment against the adjacent sides of the members 11 and 12, thus spacing the side edge members apart and providing a central opening 16 in the frame, in which may be inserted a glass pane or ornamental panel, not shown. To avoid the usage of screws and nutsl or the like, which are visible and project beyond the surface of the door, I secure the side members to the ends of the cross panel 13 by the process of butt-welding.

-The base panel 14 is'similarly secured between the lower ends of the side'members by butt-welding its extremities to the adjacent sides of said members, as at 17 The panel 14 may be made of 'a wider piece of metallic tubular stock than the side members or the panel 13, having portions 18 at its upper and ower edges, which compare in thickness with the side members, and having its central portion 19 of relatively less thickness. It has been found that this construction of the lower panel presented a very .rigid and durable structure.

It is to be understood that the specific shape, or cross section, of the tubular members comprising the side edges, the upper and lower panels is immaterial, and that the invention contemplates the construction of a door from metallic tubing of various shapes and desi s which are secured together by butt-wel ing to form the framework.

Other modes of applying the principle of mv invention may be employed instead of the moebel sids1 members and integrally united there- Wit 2. A metallic door comprising parallel tubular metallic members forming the sides ofthe door and parallel transverse tubular metallic members having their open ends abutted against theadjacent faces of said first members and integrally united there- 2o with.

Signed by me this 7th day of April, 1921.

ROGER W. DllSBRO.

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