US1801220A

US1801220A - Folding door

Info

Publication number: US1801220A
Application number: US347035A
Authority: US
Inventors: Edwin W Brown
Original assignee: CHARLES J REITZ
Current assignee: CHARLES J REITZ
Priority date: 1929-03-14
Filing date: 1929-03-14
Publication date: 1931-04-14
Anticipated expiration: 1948-04-14

Description

April 14, 1931. w BROWN 1,801,220

FOLDING noon Filed March 14, 1929 2 Sheets-Sheet 1 A R QR 1% April 14, 1931. w BROWN 1,801,220

FOLDING DOOR Filed March 14, 1929 2 Sheets-She et 2 g I I.

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Patented Apr. 14, 1931 UNITED STATES PATENT OFFICE EDWIN W. BROWN, OF SUNBURY, PENNSYLVANIA, ASSIGNOR OF ON E-HALF T0 CHARLES J. REITZ, OF SUNBURY, PENNSYLVANIA FOLDING DOOR Application filed March 14, 1929. Serial No. 347,035.

This invention relates to afolding closure such as'a' door and is capable of use generally. It is particularly aimed to provide a novel construction which is in sections adapted to fold overhead automatically and unfold automatically, as the same is moved manually.

A further object is to provide a novel control element carried by the door frame to coact with rollers or parts of the door sections to effect the folding and unfolding of the door.

It is also aimed to provide a novel construction wherein an improved locking and adjusting means forthe door is provided.

Various additional objects and advantages will become apparent from a consideration of the description following taken in connection with accompanying drawings illustrating an operative embodiment.

In said drawings Figure 1 is a view in front elevation illustrating the door in its closed condition, parts being broken away to disclose details,

Figure 2 is a vertical sectional view taken on the line 2-2 of Figure 1,

Figure 3 is a horizontal sectional view taken on the line 3".3 of Figure 1, i

Figure 4: is an enlarged fragmentary sectional view taken on the same plane as Figure 2 showing the door partly folded,

Figure 5 is a view similar to Figure 4 but showing the door further folded,

Figure 6 is a sectional view taken on the line 6 6 of Figure 4, and

Figure 7 is a detail sectional view taken on th line 7-7 of Figure 1.

Referring specifically to the drawings,

wherein like reference characters designate like or similar parts, a suitable door'frame is provided which by way of example may be metallic as-disclosed generally at 10 and'havl ing for instance side members of hollow form as at 11, a sill 12 of wood or metal connecting them and a cross member or transom 1,3 housing a cross bar 14, which may be of wood. Fastened overhead to the side members 11 are end Walls 15 and an inclined wall 16, jointly forming a housin to aid in accommodating the door in its folc ed condition. 1

' The door consists of a plurality of sections sides of the fulcrum of such lever pitmen 22 are pivotally connected which are also pivotally connected to latches 23 pivoted at 24 to the lowermost section 17.

The latches 23 are adapted for engagement in various notches 25 provided in latch flanges 26 extending from the hollow uprights 11. When the latches are engaged in notches 25, the lever 21 is in the position shown in Figures l and 3, the same having a U-shaped portion 28 adapted to surround the adjacent pitman and which is provided with openings 29 which may receive the shackle of a padlock or the like. 7

In order to normally urge the door sections to folded position and balance them, flexible elements such as chains 30 are located in the hollow uprights 11, being fastened to pins 31 on the lowermost section 17 and being trained over guide pulleys 33 within such uprights and having counter-balancing weights 34 fastened to their free ends.

The uppermost section 17 is hinged as at 35 to the bar 1 1 and with the exception of the uppermost hinge or pintle 18, the other pintles 18 have rollers 36 j ournaled thereon and which are adapted to travel on the wall 16, uprights 37 opposite the walls or flanges 26 and the inner surfaces of such flanges.

Pivoted as at 38 to portions of the uprights 37 above the member 16, are control dogs 39 of ashape to insure the proper holding and superimposition in a horizontal plane, of the door sections 17 as they are moved upwardly, and to control the release and lowering of said sections 17, successively, as the door is pulled downwardly. In manipulating the door, the lever 21 may constitute a handle or handles.

The unfolding of the sections is the reverse to tion after unlatching the elements 23, the

uppermost section 17 will substantially move to horizontal position as shown in Figure 4 without affecting the position of thecontrol members 39, because the uppermost pivot 18 has no roller 36 thereon.

However, the rollers carried by the section 17 next to the top, will engage the cam surface 44, and in View of the point 41, project the point 40 from the position shown in Figure 2 to that shown in Figures 4 and 5 such roller gradually moving off of point 41 into cam surface 45 which sustains it and the roller below it in the meantime having contacted with the cam surface 47 and moved along the same and along a depression 48 in the wall 16, eventually engaging the point 43 and thereby retracting the control element and moving into and being sustained by cam sur-v face 46 so that the succeeding roller 36 may move to the position of the uppermost roller shown in Figure 4 and a succeeding section fold in the manner described for the preceding one. In this way, the sections are successively folded in superimposed relation in horizontal planes, after which they are locked in that relation by bringing the latches 23 into engagement with the proper notches 25.

the movement set forth.

Attention is called to the fact that the lowermost rollers 36 are journaled on the pins 31 and that the latter are guided in vertical elongated slots 49 provided in the adjacent 4 upright walls of the hollow frame members 11. 1 The unfolding movement of the door is the opposite of course to that described for the raising or folding movement.

Various changes may be resorted to provided they fall within the spirit of the invention. I i I claim as my invention 1. A device of the class described comprising a plurality of closure sections, means and scope pivoting said sections together, projections 55. v nately coact with successive two adjacenton said pivoting means, and a pivoted control element. having cam surfaces to alterprojections whereby the sections between said projections are folded on one another.

2. A device of the class described comprising a plurality of door sections pivoted together, pivot members connecting adjacent sections, projections on said pivotmembers, a pivoted control element, said element having cam surfaces alternately engageable by projection on different portions of the same section in order to move the same to a folded position.

3. A device of the class described comprising a plurality of door sections pivotally connected together, a pivoted control element, said element having a surface engageable by one portion of two adjacent door sections, to vary the position of the element and then release the element, said element'having another surface positioned through said movement and engageable by another portion of two adjacent sections to facilitate folding thereof to then restore the element to normal position.

4. A device of the class described comprising a door hinged at its top, said door consisting of sections, each, section overlapping a portion of the section below it and adjacent its lower edge being pivoted thereto, pivot members being extended, control elements engageable with the pivot members, said control elements having cam portions engageable one at a time by different projections of adjacent sections and being controlled as to operative position by said projections. s V

5. A device of the class described comprising a door hinged at its top, said door'consisting of sections, each section overlapping a portion of the section below it and adjacent its lower edge being pivoted thereto, pivot members being. extended, control elements engageable with the pivot members, said control elements having cam portions engageable one at a time by different projections of adjacent sections and being controlled as .to operative position by said projections, a frame mounting said door, and an overhead casing on the frame to accommodate the door sections in their folded condition.

6. A device of the class described comprising a door hinged at its top, said door consisting .of sections, each section overlapping a portion of the section below it and adjacent its lower edge being pivoted thereto, pivot members being extended, control elements engageable with the pivot members,

,said control elements having cam portions engageable one at a time by projection of the same section and being controlled as to operative position by said projection, a frame mounting said door, and an overhead casing on the frame to accommodate the door sections in their folded condition, locking flanges on the frame. r

7. A device of the class described comprising a door hinged at its top, said door consisting of sections, each section overlapping a portion of the section below it and adjacent its lower edge being pivoted thereto, pivot members being extended, control elements engageable with the pivot members, said control elements having cam'portions engageable one at a time by projection of the same section and'being controlled as to opfit) erative position by said projection, a frame mounting said door, an overhead casing on the frame to accommodate the door sections in their folded condition, locking flanges on the frame, hollow uprights from which the flanges extend, said uprights having elongated slots, guide means extending from the lowermost door section and occupying said slots, and counter-balancing means connected to said guide means and located in said hollow elements.

In testimony whereof I afiix my signature.

EDWIN W. BROWN.