US177477A - Improvement in painters scaffold-chairs - Google Patents

Description

J. R. CROCKETT. PAINTERS SCAFFOLD CHAIR. No.177,477. Patented May 16. 1875. 1

ATTORNEYS.

N PETER8, PHOTULITHOGRAFHER. WASHINGTON.- D. C.

'tain a greater reach for the work.

UNITED STATES JOHN R. OROGKETT, or FLATONIA, TEXAS.

IMPROVEMENT IN PAINTERS SCAFFOLD-CHAIRS.

Specification forming part of Letters Patent No. 177,477, dated May 16, 1876; application filed r March 21, 1876.

To all whom it may concern:

Be it known that 1, JOHN RICHARDSON OROGKETT, of Flatonia, in the county of Fayette and State of Texas, have invented a new and Improved Painters Scaffold-Chair, of

which the following is a specification:

In the accompanying drawing, Figure 1 represents a sectional side elevation of my improved scaffold-chair for painters; and Fig.

- and lowered at pleasure by the person sitting on the scaffold, and be moved sidewise to ob- The invention consists of a scaffold made in the shape of a chair, with mechanism to raise and lower by a suspension-rope that is carried over suitable friction -pulleys of the chairframe.

1n the drawing, A represents a painters scaffold that is constructed in the shape of a. chair, with a seat, B, foot-board, and side standards or boards 0, which extend from the lower part upward, and curve forward at the top part to guide the suspension-rope D. The rope I) is secured to the roof of'the building and passed between central friction-rollers a, at the top cross-piece of the chair, and over frictionrollers b at the rear part of the scaffold to a Windlass, E, located vertically below the top rollers. The rope is wound up on the Windlass by suitable cog-wheel and crank mechanism at the outside of the standards G.

The painter sits on the scaffold-chair and raises and lowers himself along the rope by turning the crank and gear wheels and Winding or unwinding the rope. A ratchet and pawl mechanism locks the gear-wheels as soon as the turning of the crank is interrupted,

The foot-board may be constructed to act as a brake, so that by releasing the'pawl the operatormay lower himself in quicker manner than by turning the crank. The scaffoldchair may also be swung some distance from its vertical position by means of ropes passing over suitable Windlass-rollers to each side of the house, so as to give the operator a larger reach and admit quicker accomplishing of the work. The scaffold chair is securely suspended and evenly balanced on the ropes,

aiid furnishes a secure and reliable support for the operator with the facility of adjusting himself readily to the progress of his work.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

. l. The combination of a scaffold-chair with hoisting and lowering Windlass mechanism,

and suspension-ropes, guided on rear, top,

Y J. R. GROGKETT.

Witnesses:

J. M. HARRISON, G. J. LANE.

PATENT OFFICE.

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