US299473A - Leland hixson - Google Patents

Description

(No Model.) f

L. HlXgoN.

HATEHWAY GATE FOR ELEVATORS. No. 2993173. v, Patented May27, 1884. I

UNITED STATES PATENT Urrrcn- LELAND HIXSON, OF WASHINGTON, n. 0., ASSIGNOR on Two-'Tnmns To ROBERT A. TUCKER AND HENRY L. STRANG, BOTH or SAME PLACE.

HATCHWAY-GATE FO R ELEVATORS.

SPECIFICATION forming part of Letters Patent No. 299,473, dated May 27, 1884. I I Application filed December 4, 1883. (B O model.) I

1'0 all whom it may concern Be it known that I,'LELAND HIxsoN, a citizen of the United States, residing at IV-ashington, in the District of Columbia, have invented certain new and useful Improvements in Hatchway-Gates for Elevators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the'art to whiclrit appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention pertains to improvements in hatohway-gates for elevators,having for its object, chiefly, to prevent the accidental falling of persons through the hatchway-opening, as would likely or might occur when said opening is uncovered by the platform as it ispassing from one floor to another,or when lowered to the lowermost or ground floor; and,further, to provide for the opening of the gate by the direct action of the elevator-platform, and to cause the automatic closing or lowering of the gate as the platform passes from one upper floor to another.

The invention consists of the combination and construction of parts substantially as hereinafter fully set forth and claimed.

In the accompanying drawings, Figure 1 is a sectional elevation of my improved hatchway-gate for elevators. Fig. 2 isa front view thereof with parts broken away. Fig. 3 is a detail view of the same.

In the organization of my invention I provide the ordinary platform, A, with two uprights, B, one arranged and fastened at its lower end to each side of the platform, it may be at about its middle, said uprights having forwardly-projecting arms a a, secured to their upper ends, which arms are connected by a bar, a, at their outer ends, and additionally connected to the uprights by the oblique braces of. The uprights are to be only of sufficient height to elevate the arms at out of the way of a person standing on the platform of the elevator.

b is one of two spring-bolts inserted into sockets in the outer ends of the arms a, and cushioned upon springs, also arranged within said sockets, to hold said bolts in a projected position when not acted upon. The lower outer edges of said bolts are beveled to permit them to readily be acted on and sufficiently retracted during the descent of the platform,to allow k the easy unobstructed passage of the arms a as theypass downward freed of the gate, presently to be described.

G is the gate, of ordinary picket form, and adapted to have a verticallyslidin g movement, as hereinafter described.

D D are upright pieces, arranged and secured in position at the front edge of the hatchwayopening, and about in a plane extending parallel with the side edges of said opening, said upright pieces having grooves D D in their inner sides,which receive the side edges of the gate 0, so arranged as to slide therein. These grooves are extended a short distance downward into the floor, as at d d, on each side ofa forward extension, d, of the hatchway-opening, and inwardly from said grooveextensions d, projections d forming lateral or inward extensions of the inner sides of the upright pieces D, are located. These grooves D are perpendicular from the lower ends of their extensions d upward a distance about equal to the height of the gate, as at @ll to permit the 1 v latter to occupy, when closed, a vertical position, and are diagonal or oblique, as at D, the balance of their lengths, their obliquities extending outward away from the plane of movement of the elevator-platform, to enable the gate to take that direction in its upward movement, as will be presently explained.

In the extreme upper ends of the grooves D, out of the way of the gate, are apertures e,extending through the side pieces, D, within which apertures are hung pulleys e in any known way, and over these latter pass cords f, secured at one end to the upper end of the gate, and having weights 9 attached to their other ends, the purpose of which is to counterbalance the weight of the gate when in its lowered position, whereby said gate will be prevented from being forcibly precipitated into such position as it escapes from the springbolts b of the arms a,which is permitted when the elevator-platform uncovers the hatchwayopening,as will be more fully understoodhereinafter.

In operation, as the platform rises from the Lil lowermost or ground lloor, it being assumed that the gate is in position to prevent access to the hatchway-openin g of the first upper floor,) the spring-bolts b at the upper ends of the uprights B of the elevator-platform will, upon their reaching the required elevation, pass through the hatehway-opening extension (1 and into contact with the lower crossbar of the gate, thereby opening and carrying the gate upward into the inclined portions of the grooves D, which movement of the platform is continued until the said platform arrives within the hatehway-opening of the first up per floor-,or the hatchway-opening of the floor desired to be reached. \Vhen the first floor has been passed by the platform, the gate will have been elevated to such a point as to allow, by its plane of deflection from the plane or direction of the travel of the platform, the escape of the springbolts b of the latter from said gate, when the latter will descend gradually its grooves and return to its original lowcred position, again preventing access without its being elevated to the hatchway-opening. The ascending platforimwith the spring bolts, will similarly affect each gate of the floors to whiehit maybe required to elevate it.

It will have been noticed that when the platform does not pass the first upper floor the gate is retained in its elevated position upon the springbolts. It will be further seen that the projections (2 with the downward extensions d of theinner sides of the upright pieces, the latter being cut away flush with the bottoms or inner surfaces of the grooves D be low, and partly forming said extensi0ns,)will effect the holding of the gate in place when lowered as against movement toward the hatehway opening, should it happen to be pressed against by any one standing near by, and thereby prevent accidental precipitation through said opening. The spaces caused by the cutaway portions of the inner sides of the upright pieces permit of the slight inward deflection of the lower end of the gate as its upper end is deflected outward in ascending the inclined port-ions of the grooves 1).

It is obvious that the springbolts maybe replaced by hinges with one leaf somewhat extended, and adapted to fold upward upon the descent of the platform.

It is remarked that where the invention is applied to elevators used in only two-story buildings, or where only one upper floor is to be reached, the grooves are made perfectly perpendicular throughout their lengths, and the spring-bolts may be omitted, since itis not necessary to free the platform-arms from the gate and cause its descent to close the gateway leading to the floor or hatehway-opening before and not until the descent of the platform to the floor below.

Having thus fully described my invention, I claim and desire to secure by Letters Patent 1. The combination, with the platform-uprights having horizontal or outwardly-proi ecting arms, of the gate arranged to close the entrance to the hatchway-opening from the floorhaving said opening,and adapted to have perpendicular movement through the action of the ar1ns,and be retained in its elevated 01' open position thereby, said gate being lowered to its closed position upon the descent of the platform, substantially as set forth.

2. The combinatiomwith the elevator-platform having the armed uprights provided with spring-bolts, of the gate arranged to move in a perpendicular and in an oblique plane upwardly and downwardly through the action of the arms of the platform-uprights, substantially as and for the purpose set forth.

3. The combination, with the elevator-platform uprights having arms provided with spring-bolts, of the gate sliding in grooves perpendicular a portion of their lengths, and extending obliquely the remainder of their lengths, said gate being elevated through the direct action of the bolts and retained in an eley'ated position at a certain height, but allowed to return or descend after passing said height, substantially as and for the purpose specified.

In testimony whereof I aflix my signature in presence of two witnesses.

LELAND .lllXSON.

\Vitnesses:

TARNER ll. \Vniun'r, .linncs C. 'lnnvns.

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