US308936A - Guard for elevator-shafts - Google Patents

Description

(No Model.) L

G. WHITTIEB.

GUARD FOR ELEVATOR SHAFTS.

No. 308,936. Patented Dec. 9, 1884;.v

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CHARLES XVHITTIER, OF BOSTON, MASSAOHUSE IS.

GUARD FOR ELEVATOR=SHAFTS.

FJPECQFICATIOEI forming of Letters Patent No. 308,936, dated December 9, 188%.

Application filed July 21, 1581.

T0 to whom it may OOH/0617b.

Be it known that 1, Galleries \Vnrr'rmn, of Boston, county of Suffolk, State of Massachusetts, have invented an Improvement in Safe-Guards for Elevator-Shafts, of which the following description, in connection wit-h the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object to provide a barrier or guard for elevator-shafts to close or bar the several openings or doorways which lead from each landing or floor of a building into the elevator-shaft or the ear therein as it travels up and down in said shaft, all of the several openings or doorways being closed by the safety apparatus whenever the car is between any two floors, while, when the car reaches a floor or landing having a doorway opening into the shaft, such. doorway alone is freed from the barrier to permit passage to or from the car and landing.

The nature of my invention consists, primarily, of an elevator car having suitable means to raise or lower itin an elevator-shaft, a group of pulleys or shea ves supportedin the upper part of the elevatonshaft, and asecond group of pulleys or sheaves arranged in the lower portion of said elevator-shaft,combined with a gang or series of ropes having their ends secured, respectively, to the top and to the bottom ofsaid ear, the said ropes passing over and u nder the sheaves in the upper and lower portions of the elevator-shaft, the said sheaves being arranged in V form, the pulleys for each rope above and below the car being in different horizontal planes, substantially as hereinafter fully described, and particularly pointed out in the claims.

Figure 1 shows in vertical section a portion of an e1evator-shaft,with the car in elevation and with my invention properly applied; Fi g. 2, a transverse section of the shaft-walls and ear-,to clearly show the shaft and the arrange ment of the car and the guide-ropes therein.

In the drawings, A represents an elevatorcar of any suitable construction, and adapted to be moved up and down in the elevatorshaft B by any preferred known mechanism used for that purpose. The car is provided No model.)

with the usual ClOOl'WitLCL, which may be closed by the door I), The adjacent or like ends of a gang or series of ropes, e, are fastened to the top or upper part of the car above the doorway a, and, extending upward, pass about agroup of pulleys or sheaves, 0, supported on the hanger or angular plate G, which is secured in the upper part of the shaft, the ropes then extending down past and in front of the car and to one side of the doorway (4 thereof to the bottom or lower part of the shaft,where they pass about a second group of pulleys, (I, supported in the bracket or angular plate D, seen red in the bottom of the shaft, after which the ropes are secured at-their lower ends to the bottom of the car,beneatl1 said doorway a, all as clearly indicated in Fig. 1.

As herein shown, the groups of sheaves are arranged on brackets or angular plates, so that all the ropes except one pass about two pulleys in each group, in order to properly span them, as will be readily understood. Gommencing with the center rope, which is the shortest, each rope of the series in succession is longer than the rope arranged inside of it toward the center rope, each rope in succession passing over pnlleysin different horizontal planes, The gang or series of ropes is arranged in the same vertical plane at the front of the elevator-shaft or next one of its four walls only. As the ear is moved upward to ward a doorway, G, on a tloor or landing, the guard or barrier of ropes above thetop of the ear bars such doorway,passing upward over the pulleys 0; but the ropes, rising in unison with the car, uncover the doorway by the time that the ear reaches the landing or the platform of the car arrives substantially at the level of the doorway, the shaft or landing permitting free passage to be made from or to the car and landing. Thus it will be seen that all the doorways leading to the well or elevator shaft are constantly barred, except when the ear reaches a landing, when the doorway at such landing is free from any barrier or guard whatever.

By arranging the gang of ropes at the front of the shaft only I am enabled to economize very considerably in the amount of rope re quired, as well as in the number of pulleys demanded, and the flexible barrier in no Way interferes with the operating mechanism for or the guides of the car.

Instead of ordinary hemp rope, I may use bands or the more flexible of wire ropes that may be suitable for the purpose desired.

In Fig. 2 a doorway, O, on a landing or floor is shown, which, when the car-is above or below it, is barred by the gang or series of ropes, as stated.

The car herein shown will preferably be moved as in my United States Patent No. 154,108,130 which reference may be had.

I claim 1. An elevatorcar placed in an elevatorshaft, and a group of pulleys in the upper part of the shaft and agroup of pulleys in thelower part of the said shaft, each group of pulleys being arranged in V form, combined with a gang or series of ropes having their ends secured, one at the top and the other to the bottom of the car, the said ropes running about the groups of pulleys, the pulleys for each cured to or near one wall of the elevator-shaft, 0

combined with a gang of ropes connected at one end to the top of the car at the front thereof, and at their other ends to the bottom of said car at the front thereof, each of said ropes between the pulleys supporting it crossing vertically the face of the car, the independent ropes from the center to the outside rope of the series varying in length, to operate all substantially as described.

In testimony whereof I have signed my o name to this specification in the presence of two subscribing witnesses.

, CHARLES WHITTIER.

Vitnesses:

G. W. GREGORY, W. H. SIGSTON.

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