US1188865A - Elevator-shaft door. - Google Patents

Description

B. WEXLER.

ELEVATOR SHAFT DOOR.

APPLICATION FILED SEPT-9.1915.

Patented June 27, 1916.

BENJAMIN WEXLER, OF NEVI' YORK, N. Y.

ELEVATOR-SHAFT DOOR.

Specification of Letters Patent.

Patented June 27, 1916.

Application filed September 9, 1915. Serial No. 49,654.

To all whom it may concern Be it known that I, BENJAMIN \VEXLER, a citizen of the United States, and a resident of New York city, borough of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Elevator-Shaft Doors, of which the following is a specification.

This invention relates to certain new and useful improvements in elevator shaft doors.

Elevator shaft doors are usually hung in pairs, one opening upward and the other opening downward and they are connected by means of chains which pass over suitable pulleys in the elevator shaft. In order that the bottom door, the upper edge of which is to be flush with the floor when completely opened, does not afford any resistance to trucking and for the purpose of preventing the chains from being broken, it has been customary to provide, on the-guides in the elevator shaft, stopswith which a bar on the lower-door can contact when the upper edge of the lower door is flush with the floor. Any strains, jolts and so forth that the opened door may be subjected to are therefore not taken up by the chains but by these stops on the guides in the shaft. Heretofore such stops simply consisted of a piece of metal riveted to the guides and there was nothing whatever provided for taking up the lateral strain to which the door is subjected when trucks pass over it, from the car to the floor and vice versa and frequently such parts became detached orweakened and one door unduly strained.

The object of my inventionis to provide a new and improved stop for elevator shaft doors which is simple in construction, strong and durable, can easily be adjusted and fitted. is not dependent upon the strength of bolts and serves to prevent the vertical and lateral strains to which the door is subjected from injuring the door and guides for the same.

In the accompanying drawings in which like letters of reference indicate like parts in all the figures: Figure 1 is a horizontal sectional view through the guides and the upper part of the door. Fig. 2 is an elevation of the guides with my improved stop attachment looking in the direction of the arrow 00', Fig. 1. Fig. 3 is a similar view of the opposite side of the-flange .6 of the angle iron guide. Fig. 4 is a front view,

partly in section,- on the line y-y, Fig. 1.

The usual guide rail 1, in the form of an angle iron, is secured on the sides of the elevator shaft and to one flange of this angle iron guide a smaller angle iron 2 is bolted, on which the guide clip 3 is guided, whlch projects from the side edge of the door 4, all in the conventional manner. A bar 5 is secured to the top edge of the door and projects beyond the side edges of the same and forms a support for the door when the same is in lowered position and the projecting ends of this bar 5 rest on a suitable stop. This has been provided heretofore.

To the. outer face of the flange 6 of the angle iron guide 1, a plate 7 is securely fastened, which plate projects beyond the free edge of the flange 6 and has a flange 8 on its outer edge. F or the purpose of securely fastening the plate 7 to the flange (3, the plate is provided on its inner surface with two transverse lugs 9 which are made integral with the plate and enter corresponding slots in the flange 6 of the angle iron guide 1 and furthermore the plate 7 is held on the flange 6 by .two rivets 10 which are passed through the flange 6 of the angle iron guide 1 and through the plate 7. By means of the rivets 10 the plate 7 is held against the flange 6, with the lugs 9 in the slots provided for the same in the flange G of the guide 1 and with the flange 8 some distance from the free edge of the flange 6 of the angle iron guide 1. As long as these lugs 9 are held in the corresponding slots, the plate'7 cannot move lengthwise in relation to the angle iron guide 1, even under the greatest shock. Adjacent to the flange 8 a rack 11, having upwardly projecting teeth, is formed on the inner face of the plate 7 and these teeth engage the down wardly projecting teeth of a rack 12 formed on a stop bar or abutment bar 13, which bar 13 is adjustable up or down on the bar 7 and rests with one edge against the inner surface of the flange 8. A bolt 14 is passed through an opening in the bar 13 and through a longitudinal slot 15 in the bar 7, which slot has rabbe'ted side edges as at 16. The head 17 of the bolt 14 rests in the slot 15 and on the rabbets and as stated passes through the bar 13 and is secured in place by a nut 18, screwed on its projecting end and resting against the outer side'of the bar 13.

A plate 19 projects from the bar 13, parallel with and in front of the door 4. The plate 7 is secured to the flange 6 of the angle iron guide 1 by means of the lugs and rivets stated and is firmly connected with the same so that it cannot yield under any downward pressure or shocks. The plate 13 is then adjusted vertically and when it is in proper position, it is locked to the plate 7 by engaging the racks 11 and 12 and by drawing up the nut 18 on the bolt 14- IVhen the bar 13 is thus adusted an vertical im not on y the same is transmitted through the teeth of the racks to the bar 7 and from the same through the lugs 9 to the guide 1. Therefore when the lower door a is lowered forcibly and brought in contact with the upper end of the bar 13, that is, when the bar 5 of the door is brought to bear upon the upper end of the bar 13 as it must when the door is in lowered position, and a heavy truck passes over the upper edge of the door, the weight of this truck is transmitted through the bar 5, the bar 13 and the bar 7 to the angle iron guide 1 without relying upon parts which might be snapped or sheared oil under an undue load or by a shock.

At the upper end of the bar 13 I form a lug 20 which rests against the flange 8 of the bar 7. hen heavy trucks pass over the upper edge. of the lower door and are run from the car floor upon the building floor, it produces an outward lateral strain on the door and on the bar 5 and to prevent parts being bent by this strain I have provided the lug 20 against which the side of the bar 5 rests. Likewise for the purpose of preventing the outward thrust of a truck passing over the upper edge of the door 4L from subjecting the guide clip 3 to undue strain or bending, I provide the plate 19 on the inner surface of the bar 13, against which the face of the door can rest, so that this bar 19 takes up all the lateral strain that this door is subjected to and the small angle guide 2 and the guide clip 3 are not subjected to any strain whatever. There is thus no liability of the parts yielding on account of weakness of rivets as I connect the parts by racks and by lugs in the manner described for taking up the downward thrust. The thrust of the door in the direction transversely to the door is taken up by the lu Q0 and plate 19 formed on the bar 13 which in turn bears against the flange 8 of the bar 7. All parts are thus securely connected and vertical and lateral thrusts are transmitted directly to the angleiron guides 1 which are firmly secured in the elevator shaft.

All that is necessary in mounting the elevator door and guide rails is to provide the rails with belt holes and with the slots for the lugs 9 in proximity to the lower edge of the door opening. The exact position of the upper edge of the bar 13 for supporting the bar 5 when the upper edge of the door is flush with the building floor, is then determined and the bar 13 is secured in place on the bar 7 at the proper elevation by means of the two racks and the bolt 14. That is all the adjustment that is required. The belt 11 is only used for holding the racks in en gagement and is subjected to no vertical or lateral shearing strains whatever as the vertical strains are taken up by the teeth of the racks and the lateral strains on the bar 13 are taken up by the flange 8 of the bar 7.

My improved stop device is provided in the elevator shaft at each side of-the door.

Having described my invention what I claim as new and desire to secure by Letters Y Patent is 1. The combination with door guides in an elevator shaft and a door mounted to move vertically on the same, of a projection on the door beyond the sides of the same, a piece on the vertical car door guide, a

flange formed on said piece at the outer edge, e

a bar held on the said piece and resting against said flange and means for preventing longitudinal movement of said bar on the flanged piece on which it is held, substantially as set forth.

2. The combination with door guides in an elevatorshaft and a door mounted to move vertically on the same, of a projection on the door beyond the side of the same, a piece on the vertical door guide, a stop bar held on said piece, which stop bar is to be engaged by the projection on the door and a plate projecting from the exposed face of said stop bar, parallel with the front of the door, whereby said plate acts as a stop for transverse movement of the door, and the stop bar as a check for the door, against further downward movements of the same, substantially as set forth. I

3. The combination with door guides in an elevator shaft and a door mounted to move vertically on the same, of a projection on the door beyond the side of the same, a piece held on the vertical door guide, a stop bar held on said piece, said stop bar being provided at its upper end with a lug, at its outer edge, whereby when the projection rests upon the top of the stop bar, the lug on the outer edge of the stop bar serves to prevent lateral movements of the projection on the door in relation to the stop bar, substantially as set forth.

Signed at New York city, borough of Manhattan in the county of New York and State of New York this 9th day of July A. D. 1915. c

BENJAMIN IVEXLER.

lVitnesses a Oscar: A. GUNZ, MARION SHAW.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of I'atents. Washington, D. G,

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