US1851784A - Opening and closing device for garage doors - Google Patents

Description

March 29, 1932. J. STURM OPENING AND CLOSING DEVICE FOR GARAGE DOORS Filed Dec. 6, 1929 2 Sheets-Sheet 1 INVENTOR u Jusf/n Jfurm BY i a ATTORNEY March 29, 1932. J.. STURM OPENING AND CLOSING DEVICE FOR GARAGE DOORS Filed Dec. 6, 1929 2 Sheets-Sheet 2 ATTORNEY Patented Mar. 29, 1932 JUSTIN ST'URM, F WESTFOB'I; CONNECTTCUT OPENING AND CLOSING DEVICEFOR 'GA'RAGE'DOORS" Application filed. December a, 1929. Seria1-No. 412,-167.

The object of the present invention is to provide simple and efiective means for opening and closing garage doors through the propelling force of the automobile as it a proaches the garage, and after it leaves t e latter.

The invention will be described with reference to the accompanying drawings, in which Fig. 1 is a schematic plan view of an em- I' bodiment of the invention, and

Fig. 2 is a view in elevation of the same;

Fig. 3 is a view in sectional elevation of the carriage, trackway and associated elements;

Fig. 1 is a sectional end elevation of the same;

Fig. 5 is a sectional plan view of the carriage, trackway and associated elements, section being taken on the line 5-5, Fig. 3

:n Fig. 6 is a sectional plan view of a garage structure showing'one of the hinged garage doors, and a fragment of the second door, illustrating the cable connections; and

Fig. 7 is a fragmentary vertical section on the line 7-7, Fig. 6.

The device operates on the principle of an endless cable and two carriages, one exterior the garage, and one within the garage. The carriages are connected to the cable in such manner that the movement of one carriage,

through contact by and power of the automobile as it approaches the garage doors, will actuate the cable to open the doors. This actuation of the cable will move the second carriage within the garage to such positlon that when the automobile contact element meets the inner carriage, and propels it a reverse movement will be given to the cable to close the doors. The construction is such that the automobile propels the carriage to a final point, and then the contact member of the automobile is enabled to slip past the carriage. When the automobile is backed out of the garrage, the contact member will act upon the carriage again to actuate the cable in such manner that the doors are opened.

Also, when the automobile has leftthe garage,

the contact member will meet the outer carriage and propel it to close the garage doors.

In the schematic view, Fig. 1, the outer carriage is-indicated at 1, and the inner carriage at 2. v The endless cable has anouterlead a, and an innerlead b. The inner-lead Z) is secured to thecarriage 1 at thepoint 140,

being first 'ledover a fixed pulley am, and the outer lead ais secured to the carriage 1 at The cable leads, a andb, may be led over theidler pulleys 3, 3a": and 4, 4a. The inner cable lead Z) is connected to carriage 2 at am, and theoutercable lead-a is connected to carriage 2 at 27009, being first led over a'fiiied A pulley 5. led over idlerpulleys 6, 6m and 7,7

To inner cable lead 5 is spliced a cableextension Sled over a guide pulley-9. At the end of cable-extension 8 is a pulley 10 entering the loop of door-operating cable-extension 12, the latter being led over a fixed pulley 13, over a secondfixed pulley 1 1-, and thence extending .tothe end of'an arcuate chann el-iron lever '15, the connection between cable extension 12, and the lever being indicated at The arcuate door-operating lever fixed upon garage door 1G,"pref erably near the top thereof? Door-operating cable-extension 12 has spliced thereto: an extension 1203, which is led over fixed pulley 17, and is connected tothe end of-an arcuate channel iron door operati'nglever 18, fixed to the second door 19. Both doors are hinged at 20.

To door 16 is secured a door-operating cable-extension 21, led over a fiXed-pulley22, and formed-with a loop which passes around a pulley 220; secured to the end of cable extension 23. Cable extension 28 passes over a fixed pulley 2 1, and is spliced at to outer cable extension a.

Cable-extension 21 has spliced thereto a cable-extension 26, which is secured to garage door 19.

hen the automobile is approaching the garage and meets carriage 1, the front bumper, front an e or other element of the car, selected for Contact with the carriage, will propel the carriage longitudinally of its traclrway. The carriage and trackway are shown in detail in Figs. 3, 1 and 5. In the embodiment of those figures, the carriage con- The cable reads, a and b, may-be sists of a frame having vertically disposed arms 27 connected by horizontal bars 28, 2800, the bar 28 carrying rollers 29 for contact with a trackway comprising the spaced rails 30, 3002. The rails 3000 at their ends are connected to the end members 31. The rollers carried by lower bar 28, andindicated at 82 engage the lower horizontal faces of the trackway members for guiding purposes.

Supported by arms 27, is a guide rod 33 which rod projects through a passage way 34:10 formed in a post 34, the latter being pivoted at 35 upon a supporting block 36, secured to the carriage. At each side of the contact post is a coiled spring, the two springs being indicated at 37, 37:0. Sleeves such as 38 may be interposed between the springs and the rod 33, the sleeves being short, however, relatively to the length of the rod. The inertia of each spring will be somewhat greater than the inertia of the load which the carriage is required to carry in opening and closing the garage doors.

The trackway at its left hand end has pivotally mounted thereon fixed pulley are, and at its opposite end, the track way may carry pulley 400. The inner cable lead I) is led over pulley am, and secured to the carriage at 1%.

Having 7 described my invention, what I claim and desire to secure by Letters Patent, is as follows:

A door-opening and closing mechanism comprising a carriage, a supporting means on the carriage, opposed springs carried by the supporting means, a contact member pivotally mounted on the carriage and engaged at opposite sides by said springs, a second carriage and a second trackway, cable connections between the carriages whereby the movement of one carriage will eifect a movement of the second carriage and cable connections adapted to be disposed entirely laterally of and also approximately at the top of a door and adapted upon movement of one carriage in a given direction, to open the door and movement of the second carriage in the same direction to close the door.

In testimony whereof, I have signed my name to this specification.

JUSTIN STURM.

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