US839294A - Elevator-guard. - Google Patents

Description

No- 839,294. PATENTED DEC; 25, 1906.

- F JANsSEN & W BARLOW ELEVATOR GUARD. APILIOATION FILED JULY 2a 1906 T0 on whom it may concern.-

UNITED STATES PATENT oEEIoE.

FREDERICK JA ssEN' AND WILMOT BARLOW, OF MILWAUKEE, WISCONSIN.

I ELEVATOR-GUARD. v

Specification of Letters Patent.

Patented Dec. 25, 1906.

Application filed July 23, 1906. Serial No. 327,460.

Be it known that we, FREnERIcK JANSSEN and WILMoT BARLOW, citizens of the United States, and residents of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Imrovements in Elevator-Guards; and we do ereby declare that the following is a full,

clear, and exact description thereof.

Our invention consists in what is herein shown, described, and claimed, its object being to prevent catching a foot of a person between the platform of an elevator and a floor of the building in which the elevator is operative, said invention being particularly applicable in connection with freight-elevators. Figure 1 of the accompanying drawings represents a side elevation of a fragment of an elevator provided with an attachment for actuating a counterweighted'swing-shield in.

suspension from a floor at an entrance to said elevator; and Fig. '2 of said drawings re resents a view, partly in section, on the p ane indicated by line 2 2 in Fig. 1.

Referring by letter to the drawings, A indicates the platform of an elevator, to which a bracket B is bolted or otherwise rigidly secured. Likewise secured to the bracket to project above and below the elevator-platform is a vertically-disposed cam-rail O, the contour of the working portion of this rail being inclines at opposite ends and a vertical stretch between the} inclines.

Fastened to the ceiling side of a floor D are bearing-brackets E for a rod F, and fast on the rod is a hub G, provided with an arm H and crank I at a suitable angle to each other.

A weight J is supported in connection with the arm H, and the free end of the crank I or an antifriction-roller K, in connection there with, is normally in the path of the cam-rail C, attached to theielevator-platform, whether the same be ascending or descending.

Fast on the rod F are hangers L, attached to a shield M, that is overbalanced by the weighted arm H aforesaid. Spacing-sleeves N are arran ed on the rod F between the bearing-brac ets E for the same and the hangers L, attached to the shield, the length of this shield being equal to the width of the elevator-platform.

In practice a shield and parts above specified in connection therewith are arranged, as shown and described, in connection with the ceiling side of each floor that is passed by the elevator-platform in its ascent, or descent,

causes rocking said shield, its counterweight-arm H, and crank I being normally in the positions shown by full lines in Fig. 1. On the ascent or descent of the elevatorthe cam-rail attachment C of its latform coming into 0 position to the cranl? I or antifriction-roller E therewith of the rod F to swing the weighted arm H and shield M to the position indicated by dotted lines in Fig. 1, and during the time the vertical stretch between the inclines of said cam-rail is opposing said crank or antifriction-roller, as is also indicated by dotted lines in said Fig. 1, the aforesaid shield is vertical to revent a foot of a person on the elevator-p atform from being caught between said platform and an adjacent floor. The cam-rail having cleared the crank I, the weighted arm H, in rigid connection with the rod F, swings back to vertical position, and thus the shield M is automatically returned to its normal position. (Shown by full lines in Fig. 1.)

We claim- 1. The combination of a vertically-disposed s'uitably-contoured cam-rail in connection with an elevator-platform, a counterweighted shield in rockin suspension from a floor, and a shield-control ing crank arranged in the path of the cam-rail.

2. The combination of a vertically-disposed suitably-contoured cam-rail attachment on an elevator-platform, a rod, bearings for the rod arranged on the ceiling side of a floor, a counterweight-arm and a crank in rigid connection'with the rod, the crank being arranged to be actuated by the camrail; hangers fast on said rod, a shield attached to the hangers, and spacing-sleeves on the aforesaid rod between said bearingbrackets and hangers.

3. The combination of a verticallydisposed suitably-contoured cam-rail attachment on an elevator-platform, a counterweighted shield in rockm suspension from a floor, and a shield-control ing crank carrying anlantifriction-roller in the path of the camrai In testimony that we claim the foregoing we have hereunto set our hands, at Milwaukee, in the county of Milwaukee and State of Wisconsin, in the presence of two witnesses.

. F. JANSSEN.

, W. BARLOW. Witnesses:

N. E. OLIPHANT, GEO. W. YOUNG.

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