US336581A - Elevator - Google Patents

Description

(No Model.)

J. MGQUAIDE.

ELEVATOR.

Patented Feb. 23. 1886.

INVEJV'TOR Aaz cla I .dttorney I WITWEfiES UNITED STATES PATENT OFFICE.

JOHN MOQUAIDE, OF STAUNTON, VIRGINIA.

ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 336,581, dated February 23, 1886.

Application filed December 10, 1885.

Serial No. 185,211. (No model.)

To all whom it may concern.-

Be it known that I, JOHN MCQUAIDE, a citizen of the United States, residing at Staunton, in the county of Augusta, State of Virginia, have invented certain new and useful Improvements in Elevators, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements in hatch-doors for elevators, and has for its objects to add to the safety of elevators by antomatically closing the hatchways thereof, whereby persons are prevented from falling through these openings, and at the same time the heat in thelower rooms is retained. These objects are attained by the mechanism illustrated in the accompanying drawings, forming a part of this specification, in which- Figure 1 is a perspective view of an elevator provided with my improvements. Fig. 2 is a detached detailed view of my automatic door-opener. Fig. 8 is an elevation of a part of one of the floors of a building in section, the hatch-door, and the elevator-posts, a portion of the latter being broken away. Fig. 4 is a plan of one of the hatch-doors, and shows the position of the hatch belowin dotted lines; also, the elevatorposts in section, and the notched portions of the door which surround three sides of the posts, and thereby form guides to maintain the hatclrdoor in a central posit-ion.

The letters A B G D indicate the openings or hatchways in the floors of the building. E is the hoisting-rope. F is the check-rope. G is an automatic hatch-door, of which there may be one to each floor of the building. This door is to be made somewhat wider than the hatchway-say, about three-quarters of an inch-is made in two parts, and battened close around the wire rope that lifts the elevator. There are guides N, formed by cutting notches on the opposite sides of the door, one and a half inch wider than the elevator-posts, which follow the uprights upon which the elevator runs. These,with the stiff wire rope running through the center of the door, pre vent its being shaken out of position sulfifrom the lower one is made three-quarters of an inch wider than the one immediately beneath it.

The door is lifted from the hatch, in the ascent of the elevator, by arms K,which are attached to the upper frame, L, of the elevator by the uprights k and brackets k, which should be of sufficient height to be above the socket which holds the wire rope H of the elevator.

The arms k, I prefer to make about three feet long. and these alone would almost carry the door safely without shaking it sufficiently to make it hang on the edges of thehatchway; but the guides on each side of uprights and wire rope in the center absolutely prevent its getting out of plumb.

I am aware that hatch-doors have been constructed to rest upon cleats attached to hatchways, and that the elevator-frame has been provided with cross-bars to lift hatch-doors. I do not claim either of these; but

What I do claim, and desire to secure by Letters Patent, is

In an elevator, a hatch-door, G, somewhat larger than the hatchway, having guides N, embracing the posts I, and a central opening for the passage of a wire rope, H, in combination with the arms K, supported by uprights It, and braced by the brackets is, and the upper frame, L, of an elevator, as shown and described, and for the purposes set forth.

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

JOHN MGQUAIDE.

Witnesses:

B. F. TERRY, W. E. LAWRENCE.

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