US1917127A - Door closure - Google Patents

Description

July 4, 1933. o. c. JOHNSON 1,917,127

I DOOR CLOSURE Filed Aug. 12, 1951 z'sheets-sheet 1 July 4, 1933.

o. c. JOHNSON DOOR CLOSURE Filed Aug. 12, 1931 2 sheets-sheet 2 Patented I 2o 7 throu houtthe seiverallfig'uresot thewdraw .2 in-ciosed'pcsitilon, w a sectlonalyiew on flierglin e of Fig.1," 1 V 3 is averticalsection of thedoorshoiw V ing -in dotted lines its' many; open position; eel a d Y This invention relates to closure; operators and m iore' particularly to that typeiny'olm inga'door made. in sections which are-hinged v 7 together and which is 'velevat ed the open ance is used whichcounterbalancemay employed as :anoperating ineansffor'the zdoor:

, l he object of-the invention'is tofsimpliatyyf the construction of such .doori-so that; it will demand but a minimum of space in its open? I p v p p i (the;:lower section or door ing and closing so, that; the counterbalance Will not have to travel, to the floor of-the ga rage lin 'thev-perfonnance iof thi-s ffunction.

pended claims.

.1 p ings, in WhlCll Fig: '1 an elevation-of is: seen fr.om,tl1ie inside of garag.

Fig. 4 is a detail (if theslide bar."

The door is co nprised'of sections'lO and- 11,'the"lowerdoor 10 being slightly greater, in height than the upper section'll; [These 1 7; two'parts of the door are joined together by v,

, hinges 12 and the door as a Wholeis'hin'ged v at 13'to the overhead beam 14 in such a Way 1 7 that the-upper section when the door is" open Will'occupy a position in front, of'the garage,

a; as shown in Fig. 3 indotted lines;

Q it willflbe appreciated "thattheoutstan'ding 7 web of-this angle guide indicated by the nu 4:; meral 19 occupies alpo'sition behindthe' door j As shown in Fig. 2, thisweb when the door is in closed'position makes a substantially tight joint with the abutting door sections.

-' On the lower sectionjof the door there is 5 p mounted a pair .of-slide bars 20andj21which {1P P TENT TF-F EQE .1 m go 1 grip I is a: primari' door andis connected to the *sllde bars 1 Other objectsand 'advanstagesof theirinyen 3 tion will hereinafter :a'ppear:inithe following description and thenovei efieaturesfthereotf will be particularly pointed out inath'e tap -55 5- vf-ofu wlii'ch:isrnounted1a pair' .7 Like reference ;numeralsiindicate likeiparts height of, the 'lower door seGtiOnQ Tlieu -I I per'end .ofthe slide'f floaris attach d'to Ithe 5 i'lowersdocrsectionjatzsubstantially itsjinedial' line; @n thejsarne eoor section is mounted ,handagrips came 23, the'ha nd grip; 22 b'eing employed {to thesectio of-cablesE25 an might er suitable pu l leys :whichwi clescrrbedErin detaiI.

Pull supports 27 and'lin all l I resp eats; in their detail construction are suit"- a-bi secured-to the overhead bea 14 each 7 respectively "horizontal? an desagnedlinthe Well-known manner-to change i the;direction;oztavtraveluiof 'thfei cablesL-"Q'Ihe a j cablestlnzn' selives travelingpulleys-29 I andiiifiOtrat:theirloyver ends,;which trave l ing V pulleysare clesignedto move'alongthe length -of-xth'e- -slideiba-rs inath'e iupwardggmoyemcnt I otfstherdoorarThe positionyofethese pulleys; ,When the door is closed, isgshowniii'fitll 1' i is open, is shownin'dottedlinesin F igql3. a

Both cables pass over the pulley 31' and] supports shown maybe-said-to be right hand i r pulleyunits, then lefthand pulleyunits of v l I Along the jambs' 15 and '16fof the building are mounted angle'guidesl'Z and 18 and:

identical construction -Wlll produce this change ofsdirection 'It'Wlll also'bje appre-.- 3 ciated'that the counterbalance may be located a atthe rear of the garage and centrally there- I .i of, in whichcase one right hand pulley sup-3' j por and' one jlefthand-pulley support may i have fa ..Jehgth Qsubstantially the air; as Q jforbu ckli g I V V r, iss rticaL pivots,"

parent. A rsum only, therefore, is necessary to a full disclosure of the invention.

Reference is had to Fig. 3 of the drawings and to the full line disclosure found there. The lifting cable is shown as exerting a pull upon the lower section of the door at the point indicated by the numeral 32, and when the door sections are buckled by a push on the hand grip 23, the counterbalance pull at the point 32 will be suflicient to enable one to lift the doors through a gripping of the hand grip 22. In this lifting operation the flange or web 19 of the angles 17 and 18 will prevent the lower section of the door fromentering the garage, but the lower end of the door section 10 will ride upon this flange or web in the ascent of the door to the dotted line position shown in Fig. 3.

During the doors ascent the traveling pulley will move from its position at the upper end of the slide bar as shown in full lines in Fig. 3, to a position at the lower end of the slide bar shown in dotted lines in Fig. 3. Two results are accomplished by the provision of the slide bar and-traveling pulleys. The first is to permit the counterbalance 24 to have .suflicient travel from its elevated position, shown in Fig. 1, to the floor of the garage to accomplish the movement of the sectional door to its open position; it will be appreciated that if the cable were attached to the lower section of the door at a lower position than that indicated by the numeral 32, the counterbalance would reach the floor before the complete. opening of the door had been accomplished. Secondly, the transferring of V the pullupon the lower section of the door from the point 32 to the point 33 (see Fig. 3) reduces the inward pull upon the door tending to bind the lower end of the section 10 upon the flange 19 and therefore permits the more easy operation of the door in both ascent and descent.

It will be appreciated that the parts form ing the door and operator herein described are all standard parts and that they may be shipped as a unit to be inserted in the opening of a garage of a given size. In other age necessary when the cables are working from the upper part of the slides as the door in starting requires less counter-balancing. In the ascent of the door, when the pulleys roll to the lower portion of the slides, additional leverage, is secured and permits the door to go to the top with very little exertion on the part of the operative. It will also be noted that the operator is one which does not require a spring, making the operation more positive and avoiding the necessity of adjustments inherent in a spring operated door. 7

Having described. my invention what I claim is: 1

In amanua-lly operated door, a door proper composed of upper and lower sections hingedly connected, said sections being of substantially the same height and adapted to lie outside the frame in their flexed and open position, and means for counterbalancing the weight of said door comprising a cable and weight, said cable being connected to the lower section of said door by a sliding connection, whereby the initial pull upon the door will be at substantially the central portion of said lower section and the final pull upon the door will be at substantially the lower portion of said lower section.

In testimony whereof, I atlix my signature.

ORVILLE G. JOHNSON.

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