US1615182A - Painter's scaffold - Google Patents

Description

Jan. 18 1927.

1,615,182 J. THORNE PAINTER's SCAFFOLD 4 Filed Sept. 7, 1926 Patented Jan. 18, 1927.

PATENT OFFICE.

tJNl'lED STATES JAMES L. THORNE, OF C(JLUMB'US, OHIO.

PAINTERS Application filed September Painters scaffolds as heretofore proposed have been more or less complicated, poorly balanced and difficult to operate, their con structions being such as greatly to interfere with the-work of applying paint.

The principal object of the present invention is such a combination and arrangement of parts as will leave ample room for the use of the painters arms and hands and render the manipulation and use of the scatfold easy, safe and convenient. Other objects will appear from the disclosure.

The invention is embodied in the example herein shown and described, the features of i novelty being finally claimed.

In the accompanying drawing Figure 1 is a view in elevation of my invention as it appears when hung on a house.

Fig. 2 is a plan view with the hanger removed and a portion broken out.

Fig. 3 is a detail in end view, on a smaller scale of the hanger.

In the views 5 designates a pair of parallel sills and 6 a board constituting a seat secured thereon. Journaled in the sills are two shafts 7 and 8 parallel to each other, and having secured on the ends thereof where they project beyond the sills identical spools 9. The shafts 7 and 8 have secured on them adjacent the inner side of one of the sills sprockets wheels 10 of equal diameter equipped with an endless sprocket chain 11 so that when the shaft 7 is driven the shaft 8 is equally driven, the chain traveling below the seat. The shaft 7 has secured to it a worm gear 12 engaged by a vertically arranged worm 13 mounted to turn in a suitable bracket 14 the upper end of the shaft of the worm having secured to it a crank wheel 15. The Worm Wheel and Worm are of the irreversible variety so that the shafts 7 and 8 are locked from movement unless the crank wheel 15 is intentionally turned.

The hanger includes a pair of strong bent arms 16 connected by bracing and spacing bars 17 and 18. The upper terminals of the bent arms have journaled thereon rollers 19, alined with each other in their planes to facilitate the movement of the hanger along the gutter or eaves of the roof. The lower terminals of said bent arms have se- SCAFFOLD.

7, 1926. Serial lilo. 133,777.

cured to them cross arms 20 held in horizontal position by a curved retaining member 21 secured at their middles to the cross arm and bent arms. The four terminals of the cross arms are perforated to receive S- hooks 22 to which are tied the upper ends of cables 23 of equal length, the other ends of said cables being attached to the shafts of the spools at correspondin points. The bent arms are spaced so, anc the lengths of the cross arms are such, that the cables stand in vertical lines and are wound and unwound in unison. By reason of this construction the seat is maintained in a level position.

Secured to the lower sides of the sills is a narrow board 24 longer than the seat so that its ends can project beyond the ends of the seat and afford rests for a paint bucket or a paint bucket and a bucket for tools. Straps 25 secured to the ends of the seats are provided to confine the buckets to their seats until intentionally removed. Brushes or other tools can be temporarily laid on the board 25 while working.

In practice the painter first places the hooks of the hanger in position on the roof, the cables being unwound with the scaflold resting on or near the ground. He then turns the crank Wheel in the proper direction to raise the platform while he is seated thereon with his legs hanging between the projecting ends of the sills to near the roof where the work is to be begunit being the practice to paint across the side of the house from the roof downward so as to avoid spotting the work already done and the making of vertical laps. The shifting of the scaffold horizontally as the work proceeds can be effected either by a manipulated cor-d attached at a distant point or by a suitable tool engaged with the wall by the workman. To paint a new horizontal course the painters scaffold can be lowered the proper distance by turning the crank wheel in the proper direction for the purpose.

It will be observed that the forwardly projecting sills afford bumpers to maintain an ample space between the seat and the side of the building for the painters legs.

The forms of the parts can be changed Without departing from the gist of the invention as claimed.

What I claim is:

A painters scaffold comprising a pair of parallel sills, a seat connecting them a pair of parallel shafts journaled in the sills, and having their ends projecting beyond the opposite ends of the seat, spools secured to the said projecting ends of the shafts, means connecting said shafts causing them to 1'0- 10 tate in unison, a worm Wheel secured to one of said shafts, a Wo-Hn engaging said Wheel, and a hanger having cables attached thereto andto the respective spools.

JAMES L. THOR-NE.

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