US2052121A

US2052121A - Door frame construction

Info

Publication number: US2052121A
Application number: US695240A
Authority: US
Inventors: Frederick M Venzie
Original assignee: National Gypsum Co
Current assignee: National Gypsum Co
Priority date: 1933-10-26
Filing date: 1933-10-26
Publication date: 1936-08-25
Anticipated expiration: 1953-08-25

Description

ug. 25, H936. F. M. VENZIE 2,052,1@2l

DOOR FRAME CONSTRUCTION Filed Oct. 26, 1933 Jy I INVENTOB I Kia/ZJ@ ATTORNEY Patented ug. 25, 1936 UNITED srArEs Doon FRAME CONSTRUCTION;

Frederick M. venzie, Philadelphia, Pa., assigner Yto National Gypsum Company,` Buffalo, N. Y., a corporationv of4 Delaware Application october 26,1933, serial No. 695,240

'6 Claims.

My invention` relates to building construction and, more particularly, to a novel metal door case or door buck.

Heretofore in modern building constructions involving the use of a metal doorcase, the unit has been completely assembled, various parts welded together and shipped to the job as a unit. The doorcase, by reason of the way in which it is supported, after erection, has no severe strain placed upon the legs or side pieces thereof but in shipment the legs may easily be bent and the units either broken at the corners or distorted to such an extent that they will be practically useless on the job.

The present invention contemplates the elimination of these difliculties by the provision of a doorcase which is composed of a multiplicity of preshaped pieces which may be readily crated and shipped, and which may be assembled on the job with a minimum of labor.

A primary object of my invention is to provide a metal doorcase which may be shipped in a disassembled condition thus avoiding damage to the same during shipment and which may be cheaply and readily assembled on the job.

A more specic object of the invention is to provide a doorcase having separable legs and head together with means for detachably holding them in assembled position.

Other objects and advantages of my invention will be apparent from the following specication, claims, and from the drawing in which:

Fig. 1 is a front elevation of the preferred embodiment of my invention;

Fig. 2 is a vertical section taken on the line 2-2 of Fig. 1;

Fig. 3 is a vertical section taken on the line 3-3 of Fig 2;

Fig. 4 is a vertical section taken on the line ll--ll of Fig. 2; and

Fig. 5 is a detail perspective view illustrating one corner of my doorcase construction.

Doorcases prior to their erection are exceedingly fragile due to the fact that the long legs can exert great leverage on the joints at which they are connected to the head which leverage these joints are not designed to withstand since, when properly in place, it is virtually impossible to exert upon the legs a force tending to produce such action. In shipping such doorcases it has therefore been necessary to crate them and as these crates are at least as large as the doorcase it is obvious that much space is wasted since the cases are in themselves nothing but a frame for a door.

(Cl. 18S-446) i The present invention eliminates the need `for assembling the doorcases prior to their arrival at the building in which they are to be erected by the provision of three detachable parts (Fig.

1) a head ill, legs H, and corner braces |13 (Fig. 5 2 et seq.) adapted to hold the head and legs together. The head lll and legs li are each cut from the same metal shape, the shape being commonlyI known and commercially available, and formed with mitered ends.` This shape is formed from a channel upon the web lla, of which is pressed a second channel l lb to form a door stop. The ends of the flanges llc or" the shape are bent inwardly as at lid so that their inner faces co-operate with the web lla and smaller channel shape Hb to form a track or guideway.

In order to connect the head lil and legs Il from within, as must be done to present a suitable and nished appearance, I provide the corner braces I3, each of which is a unitary structure composed of two flat angle pieces ifi and l5 welded as at ll to flanges lila. on the opposite edges of the web of channel i6 bent at a right angle to conform to the angle pieces lll and l5. The flat angles lil and l5 and the channel i6 are so proportioned and sized that the flat angles fit closely between the iianges lid and the web lla of the head l@ and legs ll and so that the bent channel i6 abuts a portion of the web 30 l la of these units. The corner braces I3 and the legs il may be bored as at 26 for the reception of a bolt and nut i9 whereby the brace and legs may be locked in position. The brace and the head lil may be similarly connected or these two may be welded together.

Various modications may be made in the above described embodiment of my invention without departing from the spirit and scope thereof as set forth in the following claims.

I claim as my invention:

1. A metal doorcase comprising a head, a pair of legs, said head and legs being similar in cross section, and means slidable only within the ends of said head and only within one end of each of said legs for positioning the legs at right angles with respect to said head and means passing through said head and legs for maintaining said last named means in place.

2. A metal doorcase comprising a head; a pair 5o of legs; said head and legs being identical in cross section and shaped to provide upon their interiors oppositely disposed channels lying in parallel vertical planes; cornerpieces comprising two flat angles welded to a channel bent to form a right angle, said channel lying in contact with portions of said head and said leg and each of said flat angles engaging one of the channels within said head and leg; a bolt passing through said head and the channel of said cornerpiece; a. bolt passing through said leg and said cornerpiece; and nuts on said bolts.

3. A metal doorcase comprising a head; a pair of legs; said head and legs being identical in cross section and shaped to provide upon their interiors oppositely disposed channels; cornerpieces comprising two flat angles Welded to a channel bent to form a right angle, said channel lying in contact with portions of said head and said leg and each of said flat angles engaging one of the channels Within said head and leg; and means for maintaining said cornerpieces in position Within said head and legs.

4. A metal doorcase comprising a head; a pair of legs; said head and legs being shaped to provide upon their interiors oppositely disposed channels; cornerpieces comprising a. connecting link, two fiat angles Welded to said connecting link, each of said flat angles engaging one of the channels within said head and leg; and means for maintaining said cornerpieces in position Within said head and legs.

5. A metal doorcase comprising separable head and leg portions and corner pieces, said corner pieces conforming in shape to the inner side faces of said head and legs and slidable into position therewithin, said corner pieces also providing a reinforcement along the ends of both said head and legs.

6. A metal doorcase comprising a head, a pair of legs, said head and legs being similar in crosssection, and means slidable Within the ends of said head and within one end of each of said legs and in contact with the inner surfaces only of the side Walls thereof for connecting said head with said legs to form a unitary structure. 20

FREDERICK M. VENZIE.