US2661822A

US2661822A - Door corner

Info

Publication number: US2661822A
Application number: US167413A
Authority: US
Inventors: Robert S Wisok
Original assignee: WISCO Inc
Current assignee: WISCO Inc
Priority date: 1950-06-10
Filing date: 1950-06-10
Publication date: 1953-12-08
Anticipated expiration: 1970-12-08

Description

Dec. 8, 1953 R. s. WISOK 2,661,822

DOOR CORNER Filed June 10, 1950 INVENTOR.

Patented Dec. 8, 1953 DOOR CORNER :Robert Wisok, Detroit, Mich., 'assignor to Wisco, Inc.I Detroit, Mich,, --a corporation of Michigan lipplication June 10, 1950, Serial No. 167,413 -Claims. (Cl. 189-36) The present invention .;relates to comer construction for metal "doors :and has 1amon rits objects the provision ot a corner construction adaptable for use both at :the corners pi :a door and also-at the junction of the side memberscand cross rails if desired.

Another object of :the invention :is :the provi ion of a corner structure that will not sac and allow the joint to open and become unsightly. I

Another object is the provision :of :a corner construction that is neat in appearance and which ithe .securingzmeans :is entirely hidden.

Still other objects and advantages will readily occur to those skilled in the tart-upon reference to the following description and the 1accompanyins drawing in which:

Fi 1 is a perspective wiew of :a portion of a door showing an upper and a lower corner.

,E 2 is a sectignal View on line 2+2 .of Fig. :6.

.F 3 hows a detail, partly in section, of the adj tin means :lfor the bottom of the door.

Fig. 4 ;is a view in perspective of the securing me ns.

Fig. 5 is an enlarged view of a detail of the construction.

Fig. ,6 is a section on'-line:6 ;6 of .Fig. 2.

As indicated in the drawings, the door consist of side members or rails .iliil :(only one of which is shown) and top and bottom members .or rails H and 12 respectively. :Of these, the side rails in and top rail 1 1| may be identical cross-section and are of tubular form and are preferably of extruded aluminum or other suitable material.

-These members or rails 1:0 and f are generally rectangular and comprise what may be called a body portion 10A having along one of the shorter sides of the rectangle a flange 1913 against which will be secured a panel (not shown). Along the opposite short side of the rectangle, the :metal will extend outwardly as at I136 to provide :a shalllow channel.

Upon the inner faces of the short sides of the rectangular body of the members It, I1 and 12 will be formed low ribs 15 located a short d stance from the adjacent long side of the rectangle whereby to provide small grooves or channels and at the base of the flange lllB, inside the latter, is another low rib L5 extending toward and aligned with the metal wall MD forming the short side of the rectangle adjacent flange IOB.

The only difierencebetween side members It and u and bottom member 42 lies in the fact from the adjacent sides of -2 that the edge flanges l [8C are somewhat longer orfhigherthan the'fianges HlC so as to provide a somewhat deeper channel at the bottom of a completed door.

In building a :door of the members above iiescribed, pieces H], M and :12 are cut to suitable length and miter-ed :as indicated at 2'8. Into the abutting mitered ends of two of such 'ieoes is then inserted the fastening or securing means shown in detail in Figs. 4, 5 and 6.

This securing means consists of a pair of -L- shaped right angle members and 2 of resilient material, such as steel, preferably formed as shown; namely, having their edge portions 20A, 24A inclined to the central portion 2133-4213, at a small :angle and showing cross section :a sh'allow, ooncavo-convextrough or flattened 3U --'shape.

The members :20 and :21 are identical except that one of them, 2i], is provided with suitable openings for the passage of screws 22 and is further provided with suitable sheet metal or other nuts .23 adapted to coact with screws 22 and held in position in any suitable fashion on the convex face of the member, as by welding or by means zo'fsmall tongues (23A struck out of the metal of the member 20.

As stated above, the pair of members 2B-2 l are inserted in the abutting mitered ends or members H], II and I2 and into the grooves provided by ribs l5 so that the lateral edges ofmembers 29-2! abut the inner surfaces of the rectangular body. When thus positioned the

members

20 and 21 are laterally spaced apart and the arm portions thereof are arched away the rails interconnected thereby as perhaps best shown-in'F-i-g. 6. The longitudinal edges of each arm portion seat in adjacent corners of the rails. The ribs 15 assist in guiding the members 29 and 2! into the rails, to position the members properly in the rails, and to hold the eral displacement at all times. Also, the ribs '15 hold the members '25 and 2t properly positioned in the rails when the screws 22 are being screwed into the members 2!] during assembly of the frame.

Through suitable openings, later closed by plugs 25, the screws 22 in member 28 are screwed down against the face of member 2! to ,force the cen tral portion of the bowed members apart and thereby exert considerable pressure against the members against lat-- 3 cent sides of the rails H3 and II. When tightened, the screws 22 physically urge members 28 and 2| apart; and by forcing the members 2i] and 2| apart, the screws press the arm portions of the members laterally against the sides of the rails to hold the latter assembled. However, by reason of the resilient nature of the members 28 and 2! tightening of the screws 22 also flexes the members and thereby creates internal stresses therein which expand the same transversely and force the longitudinal edges thereof against the upper and lower sides of the rails. This action created by inherent resiliency in the members 26 and 2| supplements the lateral forces exerted by the screws, and the combined action results in an exceedingly effective holding force. It will be observed that the resultant forces tend to crowd the longitudinal edges of

members

23 and 21 into the internal corners of the rails and that holding forces are-exerted laterally and transversely with regard to the members and 2| against the corner surfaces of the rails. The total effect is an improved and exceedingly strong corner construction. Also and perhaps equally important is the fact that the exceedingly strong holding force is obtained by the use of small, lightweight means. If the proper strength and resiliency is present, the members 20 and 24 can be made from relatively light gage metal, thus maintaining the weight of the construction at a minimum and reducing manufacturing costs. All of these factors are important in apparatus of the character here under consideration.

As a further means for insuring against relative movement of the members 2i3-2i and the members H], H, l2, the former may be provide-:1 with a plurality of short sharp barbs 3E alon their outer edges. These are conveniently formed by notcliing and forcing one edge of the notch outwardly as shown.

As stated above, the bottom rail ('2 is provided with a somewhat deeper edge channel than are members l0 and H. This is to provide for the reception of an adjusting strip is which consists of a channel of suitable dimensions lying within the channel of member I? and held in proper location by means of an angle member or bracket 3| fixed to strip 33 and extending up into the edge channel of the door side rail H where it may be secured by means of a suitable screw F 3IA passing through a slot 31B in the bracket.

Suitable means for fixing the bracket 31 to strip is shown in Fig. 3 as straps 30A punched up from the metal of strip 38 and receiving the lower end of the bracket.

I claim:

1. A corner construction for fabricated metal structures comprising right-angularly disposed hollow rails having mitered ends abutting together, each rail being provided with generally right-angularly disposed diametrically opposed internal corners, and a pair of relatively thin L- shaped members of resilient material connecting said rails and arranged in laterally spaced relation with the arm portions thereof extending into the hollow interiors of the rails, each of said arm portions being arched transversely and away from the adjacent side of the rail in which it is disposed and the longitudinal edges of each arm portion seating in adjacent internal corners of the rails, and holding means engaging the arched portions of the arms flexing the same toward the adjacent sides of the rails and thereby compressing said arm portions to jam the edges thereof outwardly into pressed frictional engagement with their respective corner surfaces, whereby the holding effect of said holding means is supplemented by stressing of said resilient arm por- Itions.

2. A corner construction for fabricated metal structures comprising hollow rails disposed in abutting relation, a pair of laterally spaced memhere in and bridging the butted ends of the rails, and holding means forcing said members apart and toward opposite sides of the rails, said rails having a pair of aligned internal corners at one side thereof seating the longitudinal edges of one member and another pair of spaced internal corners at the other side thereof seating the longitudinal edges of the other member, said memers being of relatively thin, flexible, resilient material and being arched transversely away from the adjacent sides of the rails, said separating means flexing the arched portions of the members and thereby stressing the same to expand the longitudinal edges thereof tightly against the corner surfaces engaged thereby, whereby the tensioned spring action of the members supplements the lateral pressure exerted against the rails by said separating means to hold the rails assembled.

3. A corner construction for fabricated metal structures comprising right-anguiarly disposed hollow rails having mitered ends abutting together, each rail being provided with generally right-angularly disposed diametrically opposed internal corners, and a pair of L-shaped members of resilient material connecting said rails and ar- 7 ranged in laterally spaced relation with the arm portions thereof extending into the hollow interiors of the rafls, each of said arm portions being arched transversely and away from the adjacent side of the rail in which it is disposed and the longitudinal edges of each arm portion seating in adjacent internal corners of the rails, one of said members having a screw-threaded opening therein disposed in alignment with an opening in the adjacent side of the rail, and a screw insertible through the opening in the rail in and threadedly engaging said internally threaded hole, said screw bearing endwise against the other of said members, and urging said members apart laterally against the engaged corner surfaces of the rails, said screw simultaneously stressing the arched portions of the arms to force the longitudinal edges thereof in directions transverse thereto and against the opposed corner surfaces of the rails.

4. A corner construction for fabricated metal structures comprising right-angularly disposed hollow rails having mitered ends abutting together, each rail being provided with generally right-angularly disposed diametrically opposed internal corners, and a pair of L-shaped mem bers of resilient material connecting said rails and arranged in laterally spaced relation with the arm portions thereof extending into the hollow interiors of the rails, each of said arm portions being arched transversely and away from the adjacent side of the rail in which it is disposed and the longitudinal edges of each arm portion seating in adjacent internal corners of the rails, the arched portions of one member having an opening therein and the rail receiving said men her having an opening disposed in alignment with said first-mentioned opening, a nut fastened to said member over the opening therein, and a screw insertible through the opening in said rail threaded into the nut and bearing endwise against the other of said members, said screw spreading the members physically apart and pressing the same laterally against their respective corner surfaces and simultaneously stressing the arched portions of the members to press the longitudinal edges thereof in directions transverse to the arm portions and against opposed corner surfaces of the rails, and means normally closing the openings in the rails.

5. A corner construction for fabricated metal structures comprising hollow rails disposed in abutting relation, a pair of laterally spaced members in and bridging the butted ends of the rails, and holding means forcing said members apart and toward opposite sides of the rails, said rails having a pair of aligned internal corners at one side thereof seating the longitudinal edges of one member and another pair of spaced internal corners at the other side thereof seating the longitudinal edges of the other member, said rails also provided with ribs extending into the hollow interiors thereof behind said members and co-operative with the latter to hold the edges thereof seated in their respective corners, said members being of relatively thin, flexible, resilient material and being arched transversely away from the adjacent sides of the rails so that said holding means flexes the arched portions of the members and thereby stresses the same to expand the longitudinal edges thereof tightly against 'the corner surfaces engaged thereby, whereby the tensioned spring action of the members supplements the lateral pressure exerted against the rails by said members to hold the rails assembled.

ROBERT S. WISOK.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,439,167 Higgin Dec. 19, 1922 2,188,209 Sharp Jan. 23, 194:0v 2,205,957 Tinnerman Dec. 9, 1941 2,290,430 Heiser July 21, 1942