US1022386A - Safety device for elevators. - Google Patents

Description

O. J. COLE.

SAFETY DEVICE FOR ELEVATORS.

APPLIOATION FILED MAR. 25, 1911.

Patented Apr. 2, 1912.

2 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPH 60.. WASHINGTON. D. c,

SAFETY DEVICE FOR ELEVATORS.

APPLICATION FILED MAR.25, 1011.

1,022,386. Patented Apr. 2, 1912.

2 SHBBTB-SHEET 2.

fly, a",

51mm ('aiyliz J (0/3 COLUMBIA PLANOORAPH COAVASHINOTON, n. c.

UNITED STATES PATENT OFFICE.

CALVIN J. COLE, OF JACKSONVILLE, FLORIDA.

SAFETY DEVICE FOR- ELEVATORS.

To all whom it may concern:

Be it known that I, CAININ J. Gone, a citizen of the United States, residing at Jacksonville, in the county of Duvall and State of Florida, have invented new and useful Improvements in Safety Devices for Elevators, of which the following is a specification.

The invention relates to safety devices, and more particularly to the class of safety devices for elevators.

The primary object of the invention is the provision of a device of this character in which an elevator cage or car will be retarded in its downward progress on the breaking of its lifting cable.

Another object of the invention is the provision of a device of this character in which the elevator cage or car may be locked in the shaft or well to avoid the possibility of the dropping thereof, should the lifting mechanism become broken or its lifting cable severed, thus obviating the possibility of injury to the passengers or freight upon the car.

A further object of the invention is the provision of a device of this character which is simple of construction, thoroughly reliable and eflicient in operation, and inexpensive in manufacture. I

With these and other objects in view, the invention consists in the construction, combination and arrangement of parts, as will be hereinafter more fully described, illustrated in the accompanying drawings, and pointed out in the claims hereunto appended.

In the drawings: Figure 1 is a vertical sectional view of an elevator shaft or well and car with the invention applied thereto. Fig. 2 is a sectional view on the line 2-2 of Fig. 1. Fig. 3 is an enlarged side view of the stop mechanism, the same being partly in sect-ion. Fig. 4 is an end elevation thereof.

Similar reference characters indicate corresponding parts throughout the several views of the drawings.

Referring to the drawings by numerals, 5 designates an elevator shaft or well, which is of the ordinary well-known construction, having the usual vertical guide tracks at opposite sides thereof, only one of which is shown and indicated at 6, on which travels an elevator cage or car 7 of the ordinary well-known construction, and is raised and lowered within the well or shaft by means Specification of Letters Patent.

Application filed March 25, 1911.

Patented Apr. 2, 1912.

Serial No. 616,899.

of the usual lifting cable, the same being operated by suitable mechanism (not shown). The car, at opposite sides thereof, is provided with the usual vertical posts, one only being shown and alining with the track (3, and on which is mounted a channeled beam S) engaging the latter for guiding the car or cage in its ascending and descending movements as usual. Suitably fixed in the well 5, adjacent to the track (1, are outwardly projecting lugs or pins 10, the same being disposed in vertical alinen'lent and spaced from each other throughout the length of said track for engagement by the safety device, as will be hereinafter more fully described.

The safety device comprises rotatable shafts 11 and 12, respectively, the same being mounted transversely and in spaced relation to each other in a bearing bracket 13 fixed exterior-1y to one side wall of the car or cage 7, the inner ends of the shafts 11 and 12 being passed through the side wall of the car or cage and journaled in a hearing plate 14, which is suitably fixed to the cage or car at the inner face of its side wall. The shaft 11 projects outwardly beyond the bracket 13, and has loosely mounted thereon a catch member, including a hub or sleeve 15 provided with a hook extension 16, the same being adapted for engagen'ient with the lugs or pins 110, in a manner as will be hereinafter more fully described.

Fixed, in any desirable manner to the hub 15 of the catch member, is one end of a coiled tensioning spring 17, the latter surrounding the shaft 11 and having its opposite end fixed to a head 18 formed on the free end of the said shaft 11, the spring 17 being adapted to normally hold the hook 15 of the catch member in retracted position away from the lugs or pins 10, and against a stop stud 19 fixed in the bracket 13, butupon turning of the shaft 11 in one direction, the hook 16 of the catch member will be drawn into the path of the pins or meshing gears 21, whereby the same may be rotated in unison in reverse direction to each other, the shaft 12 having connected thereto the usual crank handle 22 which permits the manual turning of the shaft 12, so that its motion will be imparted to the shaft 11 for shifting the catch member into positive engagement with the lugs or pins 10, contiguous to the tracks on which the elevator cage or car travels. It is of course understood that the catch member, when the shafts l1 and 12 are rotated, will be held under tension through the medium of the spring 17 acting directly upon the said catch member.

It is clearly apparent that the safety device will be under the control of the operator in the cage or car. On the breaking of the lifting cable connected to the car or cage 7, the latter will be caused to drop in the well or shaft, whereupon the operator of the car instantly actuates the safety device, so that on the turning of the handle 22 thereof, the catch member will be thrown into the path of the lugs or pins 10, contiguous to the track 6, and as the car is descending with great velocity, the hook 16 of the catch member will momentarily engage with the lugs or pins 10 and successively trip thereover during the downward travel of the car, and in this manner the latter will be gradually retarded, reducing the velocity of movement thereof, so that said car will reach the bottom of the shaft, without any appreciable shock or jar, thereby avoiding injury to the same or its load.

What is claimed is:

1. The combination with a guide-way in a shaft or well, of a plurality of spaced lugs mounted contiguous to the same in vertical alinement with each other, a movable car adapted to travel upon said guide-Way, a

bracket projecting laterally from one side of the car, a rotatable shaft journaled in the bracket and the adjacent side wall of the car, a catch mounted upon the shaft and adapted for engagement with the lugs, a

spring having connection with the shaft and the said catch for sustaining the latter under tension, a stop pin carried by the bracket and projected into the path of movement of the catch member to limit its movement in one direction, and hand controlled gear connections with the shaft for rotating the same, whereby the catch will be moved into position for successive engagement with the lugs.

2. The combination with a guide-way in a shaft or well, of a plurality of spaced lugs mounted contiguous to the same in vertical alinement with each other, a movable car adapted to travel upon said guide-way, a bracket projecting laterally from one side of the car, a rotatable shaft journaled in the bracket and the adjacent side wall of the car, a catch mounted upon the shaft and adapted for engagement with the lugs, a spring having connection with the shaft and the said catch for sustaining the latter under tension, a stop pin carried by'the bracket CALVIN J. COLE.

Witnesses Gr. H. HODGES, AUGUST BUESING.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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