US1598367A - Safety-scaffold device - Google Patents

Description

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|. DIAMQND SAFETY SCAFFOLD DEVI GE Filed Sept. '19, 1925 IN V EN TOR.

ATTORNE f Y Patented Ang. 3l, 1926.

ISIDOR DIAMOND, OF BROCKLYN, NEWT YORK.

SAFETY-SCAFFOLD DEVICE.

Application filed September 19, 1925.

This invention relates to improvements in scaffolding', particularly to a safety-scaffold, and it is the principal object of the invention to provide a scaffold on which the workmen can work in absolute safety without danger of losing; their hold on account of slipping` `guy ropes.

Another object of the invention is the provision of a safety-scaffold equipped with auxiliary guy ropes in addition to the regular block and tackle arrangement.

A further object of the invention is the provision of a safety-scaffold with which safety-hooks of a novel and peculiar construction are used in order 'to positively prevent a slipping of the ropes from said hooks.

A still further object of the invention is the provision of a safety-scatti'ild of improved, simple and inexpensive construction, yet durable and eiiiciently preventing` accidents to workmen.

These and other objects and advantages of the invention will become more fully known as the description thereof proceeds, and will then-be specilically defined in the appended claims.

ln the accompanying* drawing, forming a material part of this disclosure:

Fin'. 1 is a perspective view of a safetyscafold constructed accordingto the present invention.

Fig'. 2 is an end view thereof.

Fig. 3 is an enlarged detail view of an attachment hook and safety-guard.

Fin'. 4l is a side elevation thereof.

Fig. .5 is a fragmentary detail view of a safety-suspension hook.

Fig. 6 is a. side elevation of a modified form of hook.

F 7 is a frontelevation thereof.

The improved safety-scaffold constructed according to the present invention comprises a foot-board 10 of any well known, suitable material and dimensions supported in end brackets 11 to which are attached in rear of the scaffold, near the wall 12 of a building, uprights 13 in such a manner that they can be folded against the board 10, if required, as indicated at 14 in Figure 1.

The upper ends of the uprights 13 are formed into eyes 15 to which the ends of a rope 16 or other flexible element are secured in any suitable manner. This flexible element will present a firm hold for the workmen and prevent them slipping` off the scaffold between board 10 and wall 12.

Serial No. 5 7,270.

In front of the brackets 11 posts 17 are attached carryingy at their upper ends brackets or loops 18 formed by suitably shaping the material ofthe posts tor the reception of G0 a front rail or trip 19 for protecting the vorkmen against a fall from the scaffold.

The upper ends of brackets 11 are formed into rinpjs 20, and side bars 21 of the forni illustre-.ted in Figure 2 connected to said 65 ring/s in any desirable manner, and thereafter with the posts 17 to protect the workmen from slipping; olf the scaffold endwise.

Hooks-22 are passed through the rings 20, and an accidental slipping' off of the rings 70 from said hooks is prevented by the arrangement of a `guard 2S having' a longitudinal slot 24 formed therein through which a pin 25 passes adapted to be displaced in said slot and to be locked in its respective adjusted positions by means of a. wing;e nut or nuts 26.

The hooks 22 are the end members of a block and tackle arrangement, Igenerally designated 27, including the ropes 28 which have their ends 28 formed into a knot or 80 knots and slung;V in the usual well known ina-nner about a pair of hooks 29 mounted on the oblique upper portions of bracket 11, and then falling over the front part of the scaffold 10.

The hooks 29 have each a guard bar 30 with a longitudinal slot 31 in which a pin 82 travels carrying' at its outer end a wing nut for allowing` a locking of the pin Iin any of its adjusted positions.

The upper pulley of the block and tackle arrangement is designated 35 and has an upper hook 86 formed therewith adapted for the suspension of the block and tackle arrangement from a suspension rope or cable or cables 37 of any desired suitable material or the like.

The hooks 36 are equipped with inner projecting headed pins or bolts, screws or the like, 38 for preventing a slipping` of the 100 cables 37 off the hooks 36.

Auxiliary ropes or cables 39 have their outer ends secured to the board 10 near its ends, as at 40, 41, while their inner ends 42, are `guided over pulleys 35 and knotted 105 over hooks 29 on top of ropes 28, as Iindicated at 413 in Figure il.

rlhe operation of my device will be entirely clear from the above description thereof, the auxiliary guy ropes 39 will effectively llo prevent a slipping of the cables or entire breaking loose of the saine, while the safety hooks will prevent Jshe ropes `from sliding eff, and the rear guard which preferably is a `iexible one will protect Jche Workmen againsy falling o between scaffolding and building, While the lrenl'J rail and the end f from the spirit of fhe invention.

l-laving,` thus described my invention, what l elaiin as new, and desire te secure by Letters Patent is:

l. In a safety-scaffold of the class described, a feet beard, a pair of brackets supporting said feet beard, means fer suspending said foot beard and braekets from a supporr, auxiliary means pretecinp; said first named means from slipping, a plurality or' safety hooks fer holding; lie ropes of said suspending` and ai1"-.il.iary means, each comprising` a guard having; a longitudinal slet formed therein, a pin adaped te travel in said slot, and means for locking said pin in any of its relative positions in said slot.

2. In a safety-scaffold of the class deseribed, a foot board,` a pair of brackets supporting said foot board, means for suspending said oot board and brackets from a supportV characterized by pulleys and ropes, auxiliary ropes having their outer ends secured to the beard near its ends, and inner ends guided over the pulleys of. 'the suspendingmeans, thereafter lrnetied over heelis on top of the ropes 0T. Jdie suspendirff means, to protect the suspend-,ingv means from slipping.

In a saey-sca''old of lhe class de scribed, a feet beard, a pair 0lI brackets su portin .Caid feet beard, means lier *A n lina` said feet beard and bracleis 'irem a support characterized by pulleys and ropes, auxiliary ropes having their euer ends secured to the board near its ends, and inner ends guided over the pulleys of the susperuling; means, thereafter knotted over saliev hooks en top olA the ropes 01"' the suspend' means, to protect l'he suspending means from'slippinnj, said safety hooks comprising a guard having; a longiudinal slet formed therein, a pin adapted to travel in said slot, and means for locking;v said pin in any of its relative positions in said slet.

ln testimony whereof I have alixed my signature.

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