US1396968A - Scaffold-support - Google Patents

Description

D. E. MADSEN AND J. KELLY.

SCAFFOLD SUPPORT. APPLICATION-FILED FEB. 13, I920.

Patented Nov. 15, 1921.

UNITED STATES DAVID E. MADSEN AND JAMES KELLY, 0F DETROIT, MICHIGAN.

SCAFFOLD-SUPPORT.

Application filed February 13, 1920.

T 0 all whom it may concern:

Be it known that we, (a) DAVID E. MAD- snn and (6) JAMES KELLY, (a) a citizen of the United States of America, and (b) a subject of the King of Great Britain, residing at Detroit, in the county of WVayne and State of Michigan, have invented certain new and useful Improvements in S caffold-Supports, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to scaffolding, and has special reference to scaffold brackets or platform supports.

The primary object of our invention is to provide a novel bracket that may be easily and quickly connected to an upright to support planks, a ledger, putlog, or a platform at said upright, and we accomplish this without using nails, screw bolts, tie rods or similar devices, and also without injury to the upright or the planks or platform to be supported thereby. It is therefore apparent that we save considerable lumber in the building of a scaffold and we do this without any element of danger.

A further object of our invention is to provide a three piece scaffold bracket, the pieces or parts of which may be easily and quickly assembled to provide astrong and durable structure capable of sustaining con siderable weight, and the manner in which the bracket is attached to an upright, causes the bracket to become more firmly anchored or held as the weight is increased.

The above and other objects are attained by a construction that will be hereinafter more fully described and then claimed. and reference will now be had to the drawings, wherein Figure 1 is a side elevation of the scaffold bracket;

Fig. 2 is a front elevation of the same, and

Fig. 3 is a plan of a portion of the scaffolding showing the bracket relative to uprights and a platform.

Each scaffold bracket comprises two horizontally disposed arms 1 and an angularly disposed leg 2. The arms 1 are shaped to cooperate in embracing an upright 3, said arnis having rear hook shaped ends 4 adapted to engage in the rear wall of the upright Specification of Letters Patent.

Patented Nov. 15, 1921.

Serial No.' 358,554.

3, as best shown in Fig. 3. lVith the arms 1 engaging opposite sides of the upright 3, said arms have the opposite ends thereof converging, as at 5, and terminating in a flat apertured heads 6. The heads 6 may be formed by twisting the outer ends of the arms 1 from a vertical plane to a horizontal plane, and with the outer ends of said arms converging it is possible for the heads 6 to fit one on the other, as shown in Figs. 1 and 2. It is preferable to keep the heads 6 as close to the upper edges of the arms 1, as possible, so that said heads may cooperate with the converging ends 5 of the arms in supporting planks or a platform 7 The leg 2 has its lower end cut and stamped to provide a prong 8 and a stop 9, said prong entering the front wall of the upright 3 and being limit-ed in its entrance by the stop 9 engaging the wall ofthe upright.

The leg 2 has its upper end terminating in a post 10 and it is on this post that the heads 6 are placed to rest on the shoulder 12 at the upper end of the leg, and the heads 6 may be retained on the shoulder 12 by a transverse pin 11 in the post 10. It is between the post 10 and the upright 3 that the planks or platform 7, are placed and it is practically impossible for the planks to become laterally displaced, consequently the platform may be safely used.

After the leg 2 has been properly anchored relative to the upright 3, it is impossible for the bracket to sag, and since the arm 1 and the leg 2 may be quickly disassembled relative to the upright 3, said upright is not injured. and may be used numerous times as a scaffolding timber or for other purposes.

The scaffolding brackets may be made of strong and durable metal finished so as not to corrode, and while in the drawing there is illustrated a preferred embodiment of our invention, it is to be understood that the structural elements are susceptible to such changes in size, shape and manner of assemblage as fall within the scope of the appended claims.

What we claim is A scaffold bracket comprising arms hav ing hook shaped ends adapted to engage in the rear wall of an upright, said arms converging and terminating at their other ends above the arm heads to hold the arm heads in flat apertured heads one extending on the thereon. other a leg adapted to have its lower end In testimony whereof we affix our signaengage in the front wall of said upright, a tures in presence of two witnesses.

5 post on said leg extending through the heads of said arms and permitting said heads to o DAVID E. MADSEN. rest on the upper end of said leg, said post JAMES KELLY. adapted to cooperate with the upright in /Vitnesses: V preventing lateral displacement of planks KARL H. BUTLER,

1 0 on said arms, and means carried by said post 7 ANNA M. DORR.

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