US139726A - Improvement in scaffolds - Google Patents

Description

D. Y. MILLER.

scaffolds.

Patentedlflnel0.18 73.

UNI ED STATES DANIEL Y. MILLER, OF HUNTSVILLE, ILLINOIS.

IMPROVEMENT IN SCAFFOLDS.

Specification forming part of Letters Patent No. 139,726, dated June 10, 1873; application filed March 29, 1873.

To all whom it may concern:

Be it known that I, DANIEL Y. MILLER, of Huntsville, in the county of Schuyler and State of Illinois, have invented a new and Improved Scaffold, of which the following is a specification:

In the accompanying drawing, Figure 1, represents a front view of my improved scaffold; Fig. 2, a vertical transverse section of the same on the line 0 c, Fig. 1. Figs. 3 and 4 are detail sections of the connecting-parts of the supports; Fig. 5, pieces applied to the platform for resting against the walls.

Similar letters of reference indicate corresponding parts.

The object of my invention is to construct a scaffold for the use of painters, carpenters, and others, which may be easily set up and taken to pieces and readily transported. A platform may be raised or lowered at will, the whole structure being simple, strong, and durable, and not too expensive. The connection of the different parts is accomplished in a firm and substantial manner. My invention consists of two main supports resting on standards and composed of several pieces, connected by strong staples, the uppermost pieces suspending, by block-and-tackle arran gement, an adjustable platform, which may be elevated to the full height of the supports.

In the drawings, A represents the standards, which form the base of the supports, consisting of two strong pieces, a, of wood or other suitable'material, with sharp points I) to rest in the ground, and a strong band, 07, of iron or other metal. The pieces a incline towards each other under a suitable angle, and are bolted to band 01, leaving a recess between them for the admission of the wedge-like end of the connecting piece B of the supports. PieceB fits closely between the braces a, and has a band, 0, bolted .to it, with side extensions or shoes to slip over the ends of braces a and form a rigid and strong connection with them. The upper end of piece B is beveled sidewise, having also a band or staple, f, bolted to it, fitting over the beveled ends of piece 0, which is constructed in similar manner with beveled ends and staples,

allowing an extension and joining of as many pieces as may be required. The pieces 0, in connection with pieces B and standards A, form strong and continuous supports, which may easily be taken to pieces and set up again, and be removed without difficulty. The uppermost piece 0 of each support has a strong staple, g, to which is suspended the block-and-tackle arrangement D, which connects by rope E with platform F. Platform F is constructed of boards resting on lateral pieces h, to which the bails t are attached, which connect in a suitable manner with ropes E. The ends of piecesh, toward the wall or other object, are supplied withguiderollers K, which prevent the dragging, scraping, or otherwise injuring of the wall by the platform. By means of a slotted plate, 1, into which a projecting pin maybe adjusted, platform 1* is kept steadily in position without danger of tilting. In case substantial wooden or iron bails t cannot be obtained, so that ropes or'other unsteady materials are substituted in their place, the pieces G, Fig.

5, are applied to the part of the platform nearest the wall, bolted through the middle part perpendicularly to the platform, the projecting beveled points m resting on the wall to prevent the platform from tilting. The ropes E are of sufficient length to be operated either from the ground or the plat formed of the short bars a a beveled at their upper ends and pivoted to the band D, the

bars or pieces B, and band 6, as described, whereby said parts A B are adapted to be connected, as set forth.

2. The platform F, having lateral pieces h with guide-rollers K, and plate l for guardpin as described. I

DANIEL Y.MILLER. Attest:

W. H. H. RADER, W. G. DENNY.

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