US1721473A - Door-operating mechanism - Google Patents

Description

July 16, 1929. T. 1 mss 1,721,413

DOOR OPERATING MECHANI SM Filed lMay 3, 1928 4 2 Sheets-Sheet 2 Z v2g l l 27 Patented July 16, 1929.

TELLIE L. ROSS, OF LEEPER, MISSOURI.A

DOOR-OPERATING MECHANISM.

Application med nay a, 192s. serialnaavisa. .c

This invention relates to an improved door operating mechanism, particularly adapted for use on garage doors.

The primary object of the invention is to provide an extremely simple and efficient mechanism of the above kind which will normally hold the doors closed, but which will be operated to open the doors'by an automobile entering or leaving the garage.

The invention consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawings and claimed.

, In .the drawings;

Figure 1 is a. fragmentary interior elevational view, showing a pair of garage doors provided with av door operating mechanism embodying the present invention.

Figure 2 is a horizontal section on line 2-2 of Figure 1.

Figure 3 is a vertical section on line 3 3 of Figure 1.

Figure 4 is an enlarged fragmentary horizontal section on line 4 4 of Figure 1.

Figure 5 is an enlarged perspective view of one of the bell crank lever supporting brackets; and

Figure 6 is a view similar to Figure 5, of one of the lever arm supporting brackets.

Referring more in detail to the drawings, 5 indicates the door frame of a garage to the sides of which are hinged the doors 6, as at 7, for swinging horizontally and outwardly to open position.

Secured at its lateral end attaching flanges 8 to each side of the frame 5 adjacent the upper ends of the doors in a U-shaped bracket 9, and pivoted at 10 to the inner side of the intermediate portion of each bracket 9 is a vertically swinging bell crank lever 11 having a forwardly projecting arm and an upwardly projecting inner arm.

A further bracket 12 is secured to each side of the frame 5 at the outer side of the adjacent bracket 9, and by the same screws or like securing elements 13vwhich pass through the flanges 8, the ends of the bracket 12 having openings 14 which register with the openings in the flanges 8 to receive said screws. The bracket 12 has a horizontal rearwardly projecting return-bent intermediate portion 15 having superposed spaced members between which is pivoted at 16 the outer end of a horizontally swinging lever arm 17 which projects through the space between the legs of the adjacent bracket 9 and has its inner end connected to the -adfjacen't door 6, near the Yadjacent side thereo by means of elink 1.8- 1`he 1ntermediate portion of the lever arm 17 is connected to the upper end of the upwardly projecting arm of the bell crank lever llby means of a link 19. Y

An upright rod 20 is; associated each.y

bell crank lever 11, the rod 20 being pivoted at its upper end to the free end of the forwardly projecting lower arm ofsaid bell crank lever, as at 21. The vlower ends of theJ rods20' are 4pivoted at 22 t0 the ends of a transverse horizontal .bar 23. located directly below the lower edges of the doorsv 6,whefn closed, and movable vertically into andout of av transverse channel 24formed in vthe runway at the bottom of. the door frame 5.

,The bar 23 has its endsslidably guided as at 25 in vert-ical grooves formed in the inner sides of the side members of t-he door frame 5 at the lower ends of the latter.

Oppositely inclined tracks 26 and 27 are arranged ateach side of the runway, one being disposed in the garage, and the other being longer and disposed outside the garage. The adjacent higher ends of each pair of tracks rest in recesses 27 a of the bar 23 and are linked together as at 28, while the outer or lower ends of the tracks rest on the runway and the floor of the garage and have suitable pin and eye means 29 to restrain them against lateral displacement and permit their vertical swinging and longitudinal movements.

A tension spring 30 is attached to each rod 20 and the adjacent side of the door frame so as to normally raise the bar 23 and the adjacent ends of the tracks, and to swing and hold the doors 6 closed. The tracks are arranged to have the wheels of an automobile ride thereon so that they are depressed by the weight of the automobile entering or leaving the garage. This depression of the tracks will so swing the bell crank levers 11 as to cause the doors 6 to open through the connections described.

Minor changes may be made without departing from the spirit and scope of the invention as claimed.

lVhat I claim is:

1. The combination with a door frame and a swinging door, of an operating link for said door mount-ed on an axis, said link normally extending away from the door, a horizontally swinging lever arm pivoted at its outer end to lthe door frame and at its inner in the upper edge end to said link, a vertically swinging bell crank lever pivoted to the door frame, a further link connecting an arm of the bell crank lever With-the lever arm intermediate the ends of the latter, and means for swinging said bell crank lever. Y

2. The combination With a. door frame and a swinging door, of an operating link Jfor said door mounted on an axis, said link normally extending away from the door, a horizontally Vswinging lever arm pivoted at its outer end vto thedoor frame and at its inner end to said link, a vertically swinging bellV crank lever pivoted to' the door frame, a further link connecting an arm of the bell crank lever V'with the lever armintermediate the ends of l`the latter, means for swinging said bell crank lever, a vertical U-shaped supporting bracket for said bell crank lever, and a further bracket for supporting the 'lever arm lmounted at the 'outerV side of said U-shaped bracket, said lever arm'projecting between the legs of said :VU-'shaped bracket. y

3. In combination with a door frame forming a door opening and doors hinged to the -sides of said frame and adapted to close said opening, meansfor operating said doors depression of said tracks lwill cause said doors to Ybe opened, said connecting means embody- Ving vertically swinging bell crank ylevers pivot-ally mounted on the sides of `the door frame adjacent the upper ends of the doors and operatively connected to the latter, up-

right rods pivoted tov and connecting the ends of the horizontal bar With said bell crank levers, a horizontally swinging lever` arm mounted on each side of the door frame, a link connectingV each bell crank lever with the adjacent lever arm, andaJ further link connecting each lever arm tofone of said doors. y Y g In testimony whereof I aliixvniy signature.

TE'LLin L. Ross.

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