US2425497A

US2425497A - Rolling door

Info

Publication number: US2425497A
Application number: US580746A
Authority: US
Inventors: Waddell William Malcolm
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-03-03
Filing date: 1945-03-03
Publication date: 1947-08-12
Anticipated expiration: 1964-08-12

Description

Aug. 12, 1947- w. MPWADDELL 2,425,497

ROLLING D003 Filed March 3, 1945 //v vs/vron.

WILLIAM MALCOLM WA 00:11

Patented Aug. 12, 1947 ROLLING noon William Malcolm Waddell, West Vancouver, British Columbia, Canada Application March 3, 1945, Serial No. 580,746

3 Claims.

My invention relates to improvements in rolling doors, the object of which is to provide a structure which is capable of being made of sheet metal or plastics.

One of the disadvantagesof rolling doors such as the interlocking type is that to substitute a new slat for a worn or damaged one, it is necessary to dismantle the door and slide the slats longitudinally for the entire width of the door, which generally precludes the possibility of a repair being made without removal from its place of suspension. The invention here described can be similarly repaired by simply removing one guide and drawing the defective slat rearwardly and substantially parallel to the plane of the door. A further object of the invention is to provide a door in which the joints are so formed as to be tight against wind and rain.

The invention contemplates a structure made up of slats each having a concave and a convex edge, which mate with corresponding parts of adjacent slats to form a continuous hinge joint, as

-wil1 be more fully described in the following specification and shown in the accompanying drawings, in which:

Fig. 1 is a perspective view of a portion of the door as seen from the inside.

Fig. 2 is a sectional detail view of a side roller.

Fig. 3 is a detail sectional View of a modified nut and bolt structure for hingedly fastening the slats together.

In the drawings like characters of reference indicate corresponding parts in each figure.

The door, generally indicated by the numeral I, is made up of slats 2 which consist of a web or straight medial portion 3 having an inwardly bent substantially semi-cylindrical bead 4 on one edge and an outwardly bent bead 5, to be referred to hereinafter as an upper bead 4 and a lower bead 5 respectively.

The upper bead 4 is so formed as to define a transversely arcuate rib 6 which projects beyond the outer face 'I of the medial portion 3 of the slats, when the door is in extended position as shown in Figure 1 and the curvature of the upper bead is preferably somewhat in excess of 180 degrees so as to define a throat 9 slightly less than the inner dimension of said bead, so as to permit a round rod 1 I of the same diameter as the inner diameter of the upper bead to be sprung into said upper bead if desired. The upper bead is provided at predetermined intervals of its length with transverse slots l2, the lower bead is provided at correlated intervals with apertures 13 and the rod I l' is provided with threaded openings I4, see Figure 2, into which bolts 16 are inserted. The heads 11 of these bolts [6 are screwed down into contact with the lower bead 5, by this means the lower bead of one slat 2 is held in rocking contact with the. upper bead 4 of the slat next below between the rod H and the head I! of the bolt [6.

The lowermost slat of a door is preferably provided with a channel strip H! which is attached thereto by rivets, spot welding or other suitable means.

In order to provide that the door may run freely in side or jamb channels, not shown, without chaffing the faces of the slats 2, I provide at opposite ends of certain of the rods a roller 2| which is of greater radius than the lower bead 5. These rollers are recessed into the edge of the door which is cut away as at 22 and 23 and are each supported on the shanks of a bolt 25 ex tended into the outer end of the rod I I to which it is attached. The bolt 25 is preferably held against turning by a set pin 26.

In the modification shown in Figure 3, the bolts [6 are driven into short strips or nuts 28 which are formed of sheet metal in the form of a channel having a web 29 and flanges 30, which flanges are inwardly curved until their edges 3| are close enough to be both engaged by the threads of the bolt [6 as shown. The web 29 of each nut is tapped as at 32 to receive the thread of the bolt. When the bolt is suitably tightened up to its nut the edges 3i of the flanges 20 are drawn towards each other, thus gripping the thread and coacting with the tapped opening 29 to form a lock nut, thus preventing any tendency of the bolts to become slack. By virtue of the pressure between the nut 28 and the upper bead being almost entirely applied in close proximity to the opening through which the bolt passes, there is no tendency in tightening the bolt to distort the bead and impair its free rocking movement within the lower bead 5 of the slat next above.

It will be obvious that the door, as shown, could be used for transverse opening and closing movement as well as for vertical movement.

What I claim as my invention is:

1. A rolling door comprising a plurality of slats arranged in edge to edge relation, each of said slats having a web and curved upper and lower beads extending from the margins of said web, the curved upper bead of one slat forming a rocking contact with-the lower curved bead of the next adjacent slat, one of said contacting beads being provided with spaced transverse slots and connecting means extending through said slots and into the contacting curved bead.

2. A rolling door comprising a plurality of slats arrangedin edge to edge relation, each of said slats having a web and curved upper and lower beads extending from the margins of said-web, the curved upper bead of one slat forming a rocking contact with the lower curved bead of the next adjacent slat, a portion of the curved upper next adjacent slat, a rod adapted to be seated in the upper curvedbead, said beads having mated openings at intervals of their length, and bolts extended through said openings into the rod and rockingly connecting contacting beads together. 7

WILLIAM MALCOLM WADDELL.

' REFERENCES CITED The following references are of record in the file of this patent:

beads extending from the margins of said web,

the curved upper bead of one slat forming a rocking contact with the lower curved bead of the UNITED STATES PATENTS Number Name a Date 1,888,162 Eklund Nov. 15, 1932 2,293,306 Pilcher Aug. 18, 1942 1,643,074 Lavagnino Sept. 20, 1927 2,099,408 Packert Nov. 16, 1937 1,917,811 Richardson July 11, 1933