US338253A - Carpenter s and painter s scaffold - Google Patents

Description

10.338.253. Patented Map; 2s, 17886.

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UNITED STATES PATENT OFFICE.

HENRY DECK, OF SWANTON, OHIO.

CARPENTERS AND PAINTERS SCAFFOLD.

SPECIFICATIONorming part of Letters Patent No. 338,253, dated March 23, 1886. lpn'enntn'nig December a2, less. sean No. 186,440. (No man.)

To all whom it may concern:

Be it known that I, HENRY DECK, of Swanton, in the county of Fulton and State of Ohio, have invented certain new and useful Improvements in Carpenters and Painters Scai'olds; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in carpenters and painters scaffolds.

The object is to provide a portable scaffold suitable for supporting carpenters or painters in position for working at the side of a building, which may be raised or lowered by one person, and in which the weight of the workmen will automatically lock the platform against accidental descent.

A. further object is to provide a light, simple, and safe scaffold capable of being manufactured at a low cost. 'u

With these ends in view my invention consists in certain features of construction and combinations of parts, as will be hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure l is a View of the scaffold in side elevation in position for use, and Fig. a2 is a back view of one of the pillars.

A represents one of two or more similarlyconstructed pillars, provided on its front with a series ol' steps or notches, (fr. The pillar is secured in an upright position near the side of the building by meansoi a forwardly-extending arm, B, bolted or otherwise secured thereto, and provided with a cross-cleat, b, on its forward end, for securing it to the building, but while this is a simple and convenient arrangement for holding the pillar inupright position, I do not wish to limit myself to this particular construction, as numerous other devices might be employed to accomplish the same purpose.

C represents the verticali ynio'vabl e bracket, which forms one of the supportsfor the platform. This bracket consists of the arm C', secured to the pillar by astrap, c, which loosely embraces the pillar. A vertical piece, D, is secured at its upper end to the arm O', near the notched face of the pillar, and extends therefrom along the said notched face of the pillar for a distance equal to the length of the arm G more or less. To the lower cnd of the pieceD is secured a second strap, d, which loosely embraces the pillar. An oblique brace, E, connects the lower end of the piece D with the outer end of the arm C. Arope or chain, F, leads from a staple or hook, e, set in the arm C', near the pillar, upwardly over a pulley, G, journaled in the upper end of the pillar, and thence downwardly along the back of the pillar to a winding-drum, g, journaled in a pair of ears, Il', secured to the pillar near its base. The winding-drum g is provided with an operating-crank, h, on one end; or it might have a crank at each end. By turning the crank lt the arm C is slid along u p the pillar, the steps or notches forming no hinderance to its movement in that direction. NVhen, however, weight is applied on the arm O', either by'the placing of a platform thereon or the weight of a workman, the lower end of the piece D will be forced against the pillar, and because of the play allowed by the straps, amounting to the depth of the notches, (more or less,) the lower end of the piece l) will automatically seat itself on the first step it reaches in its descent, and the greater the weight applied on the arm C the more securely will the arm be locked to the pillar.

In order to release the piece l) from the step on which it is seated, I provide a short bent lever, I, which is pivotcd lo the lower end of the piece I), its short arm heilig rounded and adapted to engage the l'ront iaces of' the steps, and its long arin having an operatingcord, lc, attached to its end and leading tothe ground. By pulling down on the cord 7.: the lower end of the piece l) is drawn away from the pillar out ol' its scat, and the arm C drops to the next step. to the long. arm ol" the lever K and to the brace E, the tension ol' vwhich tends to hold the short arm oi' the lever normally out oi.' engagement with the pillar.

INVhen it is desired to lower the arm C' l'roin the top to the base of the pillar, or for any extended distance, the end ot' the hoistingrope may be transferred lroin the staple c tc a ring, staple, hook, or other means ol' attachment at thc outer end ot' the arm C', and

A spiral spring is attached When so attached naturally holds the lower and of the piece D out of engagement with ;he notched face of the pillar, and admits of ts sliding freely down the pillar.

The above-described device might also be ised to raise shingles or other commodities to ;he required elevation.

It is evident that slight changes might be esorted to in the form and arrangement of she several parts described without departing 'rom the spirit and scope of my invention; ience I do not wish to limit myself strictly to he construction herein set forth; but,

Having fully described my invention, what l claim as new, and desire to secure by Let- 1ers Patent, is-

1. lIhe combination, with a pillar having ihoulders on one face thereof, the bracket, the ower end of which is adapted to rest on the shoulders on the pillar, and the straps secured '.0 the bracket and embracing the pillar, of the nent lever pivoted to the bracket and constructed and arranged to move the lower end if the bracket away from the shoulders on the pillarga cord for operating the lever, and a rope or chain for raising the bracket, substan- :ially as set forth.

2. The combination, with the verticallyextending from the bracket-arm over a pulley 'i at the upper end of the pillar, and thence down to a winding-drum j ournaled in suitable bearings at the base of the pillar, of a springactuated lever pivotally secured to the lower end of the bracket, for releasing the bracket from the notches on the pillar, substantially as set forth.

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

HENRY DECK.

lVitnesses:

H. S. BAssEfrr, C. J. BRINDLEY.

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