US1897311A - Automatic door - Google Patents

Description

en., 3.933. F. KUGLER, .5R LSQLB AUTOMATIC DOOR Filed May lO, 1930 @Ifo/wey Patented Feb. 14, 1933 1,897,311

UNITD STATES PATENT FFIC FRANK KUGLER, JR., OF BREMEN, SASKATCHEWAN, CANADA AUTOMATIC DOOR Application led May 10, 1930. Serial No. 451,394.

My invention relates to door opening and ing of the usual kind to which the intervenclosing devices one of the objects of my ining space in the wall communicates throughvention being to provide mechanism of a out the Vertical length of the door opening semi-automatic character for opening and forming a pocket for reception ofthe door closing doors and the like, operable by the which may be framed and iinished similar 55 application of pressure through utilization to a simple studded partition and the door of the weight of the user, opening linished as desired, the outer side A further object of my invention is to proof the opening being closedv by the frame 4. vide a door opening and closing device that Suspended in the door opening is av door can be operated with equal facility from operating on a guide rail 6 which extends 60 either side 0f the door Combining a manual llltO the pOClet 'Ormed irl the Wall Structure. operation of a semi-automatic character for Suspension of the door is secured by proviopening the door with an automatic closing sion of rollers 7 7 attaching to the toprail Y operation and further to carry out the openof the door by straps 8 8 permitting sliding i5 ino and closing action without use of the actuation of the door on the guide rail. 65 hands providing a convenient arrangement Below the door 5 set in a suitable opening 9 for use where necessary conditions make such pIOVlCled in the iool 3 in horizontal alignuse of the hands inconvenient. ment with the door opening is an inverted A still further object of my invention is to box forming a treadle structure comprising a provide a door opening and closing device of H001 Section or platform l0 looselyiitting 70 such a character that can be installed Within the Opening 9 and provided with side walls out; interference with the regular Wall and ll-ll braced as desired, the Said Structure iioor construction to the extent of encroachbeing Clesiffned t0 Operate as a treadle for ing on available space and without utilizaactuation of the operating mechanism.

tion of visible mechanism out of harmony The opening in the floor 3 is provided with 75 with surroundings. a depending casing generally indicated at l2 With the above and other objects in view enclosing the area below theopening 9 and my invention resides in the combination of designed to receive the treadle structure and parts hereinafter more particularly described act as a guideway and lateral support there- 3o and claimed reference also being had to the for the said casing l2 forming a part of the 80 accompanying drawing, wherein like characiioor construction and being extended if deters of reference are used to indicate like sired to enclose the whole of the operating part-s throughout the different views and mechanism below the Hoor level.

wherein Pivotally attaching to the side walls 11-11 Fig. l is a side elevation of a door susof the treadle by means of suitable connecting S5 pended in a wall structure illustrated with pins is a forked lever comprising a pair of my opening and closing mechanism installed spaced apart arms 1313 convergingly inand attached thereto, part of the wall strucclining at their cuter extremities tor receive an ture being for convenience of illustration interposed link 14 pivotally attaching thereshown broken away. to by a connecting pin 15. The inner ex- 90 l Fig. 2 is a sectional view illustrated as tremities of the arms 13-13 of the forked taken on a line 2 2 of Fig. l, showing the lever are arranged in a loose pivotal attachconstruction of the platform and connection ment to the side walls 11-11 of the treadle lever. structure through the medium of links 16-16 Referring to the drawing l indicates the attached to said arms and side walls by sut- 95 rear facing of a Wall structure, 2 the front able connecting pins or the like. The said facing and 3 the floor, the whole being mereforked lever is arranged when in horizontal ly indicative of any usual wall construction position to support the floor section 10 of the inclusive of an intervening air space. treadle structure level with the main floorto Formed in the wall structure is a door opeuing 3.

Y angle thereof is attached the link 14 forming an operating connection with the forked lever. To the upper extremity of the vertical leg of the lever 17 is pivotallyattached a link 19 which attaches to the inner margin of the door 5 by means of an eye bolt or the like.

Further attached to the horizontal leg of the leverl 117 is a counterweight 20 of suitable weight to counterbalance the force required c for the'openi-ng operation of the door. The

said weight is adJusted to exercise sufficient counter action to normally retain the door closed and the forked lever in a normal horizontal position or to automatically restore the door, when open, to its normal closed position.

spect relative extension of the platform area could be included in the structure.

Having thus described my invention what I claim is The combination with a spaced apart wall provided with a door opening, a horizontally reciprocating door mounted to close the -opening having an angled lever pivotally mounted connected for actuation of the door and havingV a counterweight automatically operable to move the door into a normalclosed position, and a floor structure in conjunction with the wall formed with an opening below the door opening, of a treadle structure for opening the door comprising a forked lever intermediately suspended in the floor structure with the forked end ofthe lever aligned with the floor opening, an open boX structure vdepending from the floor surrounding the opening therein, a platform pivotally supported on the forked arms of the lever and mounted vertically slidable in the box structure, and a link connecting the other end of the forked lever tothe angled lever.

FRANK KUGLER' JN'IOR.

, In the operation of the device a person steppingpand imposing their weight on the Hoor section of the treadle structure depresses the said structure and throughconnection of the links 16-16 forces the inner end of the forked level downward elevating the outer extremity. of the said lever which through connection of the link 14 actuates the lever 17 in opposition to the counterweight and through the link 19 draws back on the door 5 sliding the said door on the guide rail 6 into the wall pocket provided therefor.

Release of the pressure on the platform 10 allows the counterweight 20 to come into play forcing downward on the horizontal leg of the lever 17 and through the connection of the link 19 with the vertical leg of the said lever forcing the door closed again. Operation of the lever 17 serves through its connecting link 14 to restore the forked lever to its normal horizontal position andelevate the platform 10 to its normal position on a level with the main flooring. l

Through the relative unequal balance of the forked lever only a very slight depression of the platform 10 is required for the operation ofthe mechanism the weight so applied ultimately through provision of the counter- Weight 20 serving the dual purposeof opening and closing the door 5.

In its conception the structure as herein designed is applicable to a variety of purposes wherev an easily operable door structure of this characteris advantageous. The structure can also be adapted to be utilized in connection with a pair of sliding doors closing into contact at a common center by provision of a double leverage system such for instance as for garage purposesV and the like, in which rellO

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