US599437A

US599437A - Robert bell

Info

Publication number: US599437A
Authority: US
Publication date: 1898-02-22
Anticipated expiration: 1915-02-22

Description

UNITED STATES PATENT OFFICE.

ROBERT BELL, OF AIMISFIELD, AND ROBERT MAGUIRE, OF SPRIGBURN, SCOTLAND.

HOISTING OR LOWRING GEAR.

SPECIFICATION forming part of Letters Patent No. 599,43*?, dated February 22, 1898.

Application filed Tune 12, 1897. Serial Nox 640,565. (No model.) Patented in England December 15, 1893,11'0. 24,137, and August 27,1896,No.18,941.

To a/ZZ whom t may con/cern:

Be it known that we, ROBERT BELL, M. D. of Glenae, Ai'rniseld, near Dumfries, in the county of Dumfries, and ROBERT MAGUIRE, engineer, of 4 VellEield street, Springburn, in the county ofthe city of Glasgow, Scotland, have invented certain new and useful Improvenients in Hoisting or Lowering Gear, (patented in England, No. 24,137, dated December 15, 1893, and No. 18,941, dated August 27, 1896,) of which the following is a specification.

This invention relates to hoisting and lowering gear of the kind adapted for use in warehouses, stores, 'and similar buildings; and it has for its object to relieve the strain upon the hauling ropeor chain and also to render automatic the locking and releasing of the bolt or rod attached to the'loaded end of the rope.

The invention is illustrated by the accompanying drawings, Figure 1 being a vertical section, Fig. 2 a front view, and Fig. 3 a side elevation, of the improved hoisting and lowering gear.

The apparatus comprises a bolt, rod, or hook A, from which the load is suspended, and a hauling rope or chain B, attached to the hook A and passing over a pulley C, centered in a bracket D, adapted to be secured to a beam or rafter or other fixture, the rope B having its other end connected to a ring or handle. The bracket D, carrying the pulley C, is composed of two side cheeks sufiiciently wide to permit of the head of the suspending bolt or rod A passing through downward between the cheeks, rests, or ledges I, formed on the inner surfaces of these cheeks, and inclined guides K, pivoted thereon, preventing the bolt-head on its upward passage from entering between the jaws. The inclined guides K are formed by the ends of an eyepiece K', pivoted in the jaws D.

The carrying-bracket D is further provided with a pivoted eyepiece E, the pivots being in the sides of the bracket D. The action of the apparatus is as follows: When the goods are raised, the head of the bolt or rodApasses through the pivoted eyepiece E and upward through the eye K', the bolt-head acting on the lower sides of the inclined guides K. When the bolt-head has passed clear of the inclined guides, the load pulls the rope into its original liue of travel, and on the operator releasing the rope the bolt-head slides down the upper sides of the inclined guides, which are pushed aside, as shown in dotted lines, Fig. 1, by the descending bolt until the head of the bolt rest-s on the ledges I, when the inclined guides K resume their former position against stops K2 on either side of the jaws D. Vhen the goods are being lowered, the rope is pulled and the bolt-head is thereby caused to pass between the inclined guides and the rests I until it comes in contact with the pivoted eyepiece E and raises this against the edges of the carrying-bracket D, which thus forms a barrier and prevents the bolt A being again passed over the guide K, the load being thereafter lowered.

I-Iaving now described the invention, what we claim, and desire to secure by Letters Patent, is-

1. In combination, the frame D, the pulley therein, the rigid ledges or stops I on the frame, and an inclined guide K pivoted to the frame at a point above the rigid ledges or stops to direct the pulley-head thereto and to provide a clear way beneath, substantially as described.

2. In combination, the frame D, the pulley therein, the rigid ledges or stops I on the frame, the inclined guide on the frame above the ledges and a pivoted piece below the inclined guide and adjacent to the rigid ledges in the path of the pulley-block head as it leaves the ledges, said pivoted piece being adapted to form a barrier, substantially as described.

Signed at Glasgow, Scotland, this 3d day of May, 1897.

ROBERT BELL. ROBERT MAGUIRE.

Witnesses:

WALLACE FAIRWEATHER, JN0. ARMSTRONG, Junr.