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Publication numberUS1912829 A
Publication typeGrant
Publication dateJun 6, 1933
Filing dateOct 2, 1930
Priority dateOct 2, 1930
Publication numberUS 1912829 A, US 1912829A, US-A-1912829, US1912829 A, US1912829A
InventorsMarshall E Crume
Original AssigneeMiami Mfg Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1912829 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

M. E. CRUME June 6, 1933.

2 Sheets-Sheet 2 Filed Oct. 2, 1930 m u. u i mm mm. .mmm a mk gnam/co@ Mamlamme Patented June 6, 1933 MARSHALL PATENT Norwell;


Tnoon Appiicatienmedoctober 2, i930. semaine. 486,007.

This invention relates to vertically opening `doors designed for garages, warehouses and such like buildings, composed of a multiple of t sections hinged together e on horizontally disposed hinges with the upper section hingedto the top of the door frame, whereby as the" door Vopens the sections fold upwardly adjacent to the top ot said door frame; and it consists in `variousimprovementsin the details of construction and arrangement ot parts whereby the door sections and the door as an entirety are mounted and counterbalanced in a manner to in-` sure iree and easy operation by hand, all

as will be hereinafter more fully describedV and claimed.

Referring to the accompanying drawings, which are made a part hereof and on which similar reference characters indicate similar parts,

Figure 1 is an elevation of the inside ot the door in closed position with parts broken away `to disclose the details,

Figure 2, a detail section on the line 2-2 of Figure 1, showing the pulley arrangement,

\ Figure 3, a detail section on the line 33 of Figure l showing the mounting of the balance weight,

Figure 4, a vertical section on the line 4-4 of Figure l showing the mounting of the swivel blocks,

Figure 5, a similar View on the line 5-5 oi? Figure 4, n Y .e

Figure 6, a vertical section on the line 6--6 of Figure 1, f

Figure 7, a similar view with the door raised, and

Figure 8, a detail view of the balance `weight and its connections.

`In the drawings 10 and l1 represent vertical rectangular columns which may be and preferably are made interchangeable. They are connected at their upper ends by a hol low rectangular beam 12 from which the door sections are hung. The top section 13 is hinged t0 the inner top edge of the beam 12 by means of long strap hinges 14 which permit the section 13 to swing clear of the beam when in open position. The intermediate sectionl is attached to the top section 13 by means of hinges 1G` located on the outside of the sections. `The bottom section 17 is connected to the inside edge of the;section"`byhinges 18. It will be readily seen in `Figure `7 that the sect-ions lfo'ldh one onthe otherwhen open.

The inner surfaces of columns 10 and 11 `eacli supports a channel comprising a pair of metal straps 19 and 20 respectively which zctas guides for thefolding sections of the c oor.

Adjacent-the abutting edges vof the: sections 1'5` and 17 and on the sides thereof are mounted swivel blocks 21 and 22 respectively, which serve t `as weather rstrips or guards at these points." The blocks 21 are slotted their entire length at 23 jfor a purpose to be explained later, while the blocks 22 are channeled to receive rollers 24 mounted on shaft 25 which rollers relieve the fric-` tion caused by the `weight of thedoors. e fStirrups 26` are carriedby the shafts 25 and have cables 27 and `28 attached thereto. IThese cables pass upward through the slots 23 in the blocks 21, then upward through the channels 19 and 20 respectively, over pulleys 29 and 3() in the beam 12, then horizontally through thebeam to similar pulleys 31 and 32 located directly over the center `of the co1- umn 10. The cables then enter the top of the column and are attached to the ends of a plate 33 which has a central `opening through which extends the threaded endof a bolt 34 upon `which the sectionalv counterweight 35 is secured. The upper and lower ends of the weight .35 are preferably pro"- vided with anti-"friction rollers olrhall-bearingsl atthe corners, as shown` (see `Figure 8) to` insure free movement and prevent binding orundue friction in operation.

The `doors may be locked in their closed position by meansoita pair of bars 38 pivotedat their inner endsto a circular notched plate 39 mounted on the inside of the door section 15. A handle 40 is secured to the plate 39 which when thrown to the left in Figure l retracts the bars from retainers 4l mounted in the columns l0 and l1, thus permitting the doors to be swung open.,l A lock 42 is mounted'adjacent the plate 39- and has a bolt 43 adapted to enter the notch in said plate when the doors are closed. Handles 44 are provided on the sections 15 and 17 to facilitate opening the doors.

The operation of my device is as follows: The doors are shown closed in Figures 1 and 6 of the drawings. After unlocking the doors by swinging the handle 40, the operator grasps the handles 44 and breaks the alignment of the door sections which automatically causes the door to move upward and the hand-hold 36 to move downward within reaching distance of the operator who can then grasp said hand-hold and use it in completing the opening operation if desired. However,.the door can easily be entirely opened by grasping the handles 44 as it is so balanced that as soon as the alignment is broken a slight pressure upward causes the door to rise and the sections to fold, thus making it unnecessary to use the handle 36, although ity may be employed whenever desired or found convenient. In closing the door, however, the hand-hold 36 is used'whi'ch raises the weight, enables the sections to move down andto be turned into alignment bythe handles 44 and locked.

l It will be obvious to. those skilled in the art-,that various changes may be made in my device without departing from the spirit of the invention and therefore I do not limit myself to what is shown in the drawings and described in the specification but' only as indicated in the appended claims.

Having thus fully described my said invention what I claim as new,v and desire to secure. by Letters Patent, is:

l. A door for garages etc.,fcomprising a frame composed of a pair of hollow columns having guide rails mounted on their inner edges, a hollow beam connecting the tops of said columns, a door panel hinged to the top edge of said beam and adapted to seat be'- neathsaid beam when closed, a second door panel hinged to the first panel on the opposite edge thereof, a third door panel hinged toy said second' panel on the oppositeedge thereof, swiveled guide blocks secured to the sides of said second and thirdpanels adjacent their meeting edges, cables. secured within the block of said third section and passing through slots in the blocks of said second section,Yanti-friction rollers mounted within said blocks, a counterweight in one of saidl columns, a bolt supporting said counterweight, equalizing means. for said cables carried bysaid bolt, .and a hand operating device, carriedzby saidl bolt and extending said hinge on the inner edge thereof, swiveled guide blocks secured to the sides of said second and third panels adjacent their meeting edges, cables secured to the swivel of saidA block on said third panel and passing freely through slots in the blocks on said second section, and a hand operating device secured to the ends of said cables for operating said door, substantially as set forth.

In witness whereof, I have hereunto set my hand at Peru, Indiana, this thirtieth day of September, A. D. nineteen hundred and thirty.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3192992 *Jan 8, 1963Jul 6, 1965Stanley WorksOverhead sectional door
US4134177 *Jan 21, 1977Jan 16, 1979Janson Richard WCounterweight carriage frame for stage curtains and the like
US4480863 *Sep 3, 1982Nov 6, 1984Hofmann KG BrockhagenDoor with locking device
US5078197 *Apr 5, 1990Jan 7, 1992Kelley Company Inc.Manually operated industrial roll door
US7343762Oct 16, 2003Mar 18, 2008Amarr CompanyGarage door locking system
U.S. Classification160/190, 70/DIG.110, 160/207
International ClassificationE06B3/48
Cooperative ClassificationE06B3/483, Y10S70/11
European ClassificationE06B3/48B4