US1148631A - Ladder-scaffolding. - Google Patents

Description

E. E. SIMPSON.

LADDER SCAFFOLDING.

I APPLICATION FILED SEPT.26, 1914.

l,1%8,631 Patented Aug. 3,1915.

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EDWARD E. SIMPSON, OF OAKLAND, IOWA.

LADDER-SCAFFOLDING.

Specification. of Letters Patent.

'Patented'Aug. a, 1915.

Application filed September 26, 1914. Serial No. 863,717.

To all whom it may concern:

Be it known that I, EDWARD E. SIMPSON, a citizen of the United States, residing at Oakland, in the county of Pottawattamie and State of Iowa have invented certain new and useful Improvements in a Ladderscafiiolding, of which the following is a specification, reference being had tothe accompanying drawings. 1

My invention relates to certain new and useful improvements in scaffold attachments for use in connection with ladders and has for its objects to produce'scaffold supports for attachment to ladders which shall be economic of construction, readily secured in place and safe when in'use, and with these ends in view myinvention consists the details of construction and arrangement hereinafter more fully set forth and as illustrated in the drawing.

In order that those familiar with the art to which my invention appertainsmay fully understand my invention 1 will proceed to describe the same referring by numerals to the accompanying drawing, in which Figure 1 is a perspective view illustrating a scaffolding produced by my attachments to a plurality of ladders. Fig. 2 is a plan view of one of the scaffold board supports and brace; Fig. 3 is a perspective view of one of the devices by which the board support and the upper end of the brace are safely secured to the rounds of the ladder; and Fig. lis a side view of the rings employed to secure the devices shown at Fig. 3 in their proper and fixed relation with the scaffold board support and bracev Similar reference numerals indicate like parts in the several figures of the drawing.

1, is intended to represent the front of a building against which two or more ordinary ladders 2 are supported at any angle suitable for the erection of a scaffold between them and the front of the building.

3 is a flat board support preferably of iron any suitable length and of such cross section as to provide the necessary strength and rigidity which is hinged at one end by a pintle bolt 4: and nut 5, to the bifurcated end 6 of a strong metal brace 7 as clearly shown, and as will be obvious the support and brace may be readily connected or separated. 7

The free end of the support which is to be connected with a round of the ladder is provided with a series of orifices 8 at any desired distance apart to'provide for adjustment as will be presently explained, and the free end of the brace is also provided with any desired number of spaced orifices 9 for a like purpose.

10 are the devices employed for securing the support and the brace to the rounds of a ladder and consist of preferably flat metal of suitable strength and dimensions and are formed near oneend with a seat 11 adapted to coincide with and embrace the underside of the round of a ladder and terminating in a round nipple or extension 12 adapted to be seated in any one of the orifices 8 or 9; the shoulder 13 contacting with the under side of the brace and the support.

The nipple or extension 12 is projected at a slight angle to the main body in order that when placed in position to lock the support and the brace respectively to-the rounds of the ladder, the free ends will be put under tension when drawn up against the under side of the support "and brace and secured by elliptical or flattened rings 14:, and thus the round of the ladder will be tightly embraced.

In erecting a scaffold two or more ordinary long ladders are inclined against the but if deemed necessary or expedient it may be secured in any other manner. The support 3 is now swung into horizontal position and its free end located upon the upper surface of'a round of the ladder and secured fixedly thereto by a device 10, as already explained with reference to the attachment of the brace. The ladders being suitably spaced to receive them, walking scaffold boards 15 are laid upon the supports 3, and if thought necessary secured against movement by removable bolts 16 passing through orifices 17 in the support. I

By reference to Fig. 1 it will be seen that as the tops of the ladders are not sufficiently distant from the building for the scaffold to-be erected between the ladders and the the supports and braces .packed in aicomparatively small compass.

Attention is especially called to the fact that by reason of the relation of the braces and supports when connected with spaced rounds of the ladder serve to stiffen the ladder and to prevent undue vibration of the same; 9

I of coursedo notwish'to be limited, to

any proportions or dimensions of the several referred to devices nor do I wish toibe limited as to the material used although I preferthat they should be made of iron of suitable strength and rigidity.

'NVhat I claim as new and desire to secure by Letters Patent is :1. The combination with brace having a longitudinal series of perforations, of a rung engaging clip coacting therewith com prising a straight body portion adapted to lie against the face of thee-brace, said clip being formed adjacent one end witha bowed rung seat and a reduced terminal portion adapted to vbe inserted through any one of the perforations inthebrace and extending in a'direction away from the direction of mg may be expeditiously erected and takendow'n, and all of the members constituting the bowed seat and at an angle to the body of'the clip, andmeans for detachably connecting the -body'o-fthe clip against the face of the brace, the clip being adjustable along the'brac'e'to engage any one of said perforaof'the'biace. i

2. ';lhe combination with a brace for ladder brackets having a longitudinally extend- "tions to thereby adjust the operative length ing series of'perforations, ofa rung engag-,

ing clip comprisinga ibody portion adapted normally to lie against the face of said brace, said clip at one: end being outwardly bowed away from'the brace toform' a rung engaging seat, .the terminal end ofthe clip beyond said body portion being reduced in diameter and extended at an obtuse angle the-brace In testimony whereof I hereunto my signature in f EDWVARD'E. SIMPSON. \Vitnessesz 7 Q ,7

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to the body of the clip land'in a direction away froni'the direction in which the seat}- is bowed,'sa'id reduced portion being adapted for insertion through. anyone of said perforations whereby the operative length "of the "brace may be adj usted and a locking ,ringsliding'upon the brace and upon the bodyiofthe clip and normally holding the body of the clip incontact with the face of the presence of two witnesses.

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