US1922069A

US1922069A - Scaffold

Info

Publication number: US1922069A
Application number: US553488A
Authority: US
Inventors: Claude H Adams
Original assignee: Individual
Current assignee: Individual
Priority date: 1931-07-28
Filing date: 1931-07-28
Publication date: 1933-08-15
Anticipated expiration: 1950-08-15

Description

Aug. 15, 1933. C ADAMS 1,922,069

SCAFFOLD Filed July 28, 1931 f2 6/ //v VENT'OR C/aaae H Adams [By W W ATTORNEYS 4 In the embodiment of my invention illustrated, it is desired to raise the working platform, the

. 5 sides of the columns 10 and are provided with placed in position between the jack support and Patented Aug. 15, 1933 v UNITED STATES PATENT OFFICE SCAFFOLD Claude H. Adams, Glens Falls, N. Y.

Application July 28, 1931. Serial No. 553,488

3 Claims. (01. 30429) My invention more particularly relates to a a bracket 19 on which the base portion 151 of the scaffold which is of simple construction and jack is supported, a block 191 preferably being which may readily be raised or lowered from beinterposed between the bracket and the base of neath the working scaffold, and which may readthe jack. The bracket 19 and the block 191 are 5 ily be supported in any desired position on suitprovided with holes to receive the lower end of the able columns. jack screwy A suitable block 20 may also be Another object of my invention is the provision interposed between the upper portion of the jack of a foot scaffold supported from the working and the needle beam 13. scaffold so that the entire scaffold may be raised The foot scaffold, on which the operator stands,

10 and lowered as a unit. preferably comprises beams 21 which may be Another object of my invention is the provithe same structurally, as the needle beams 13 but sion of needle beams for the scaffolding which usually of lighter construction, and are provided are forked at their ends and embrace the columns with pins 22 by which they may be suspended by and engage and are supported by pins which are cables 23 which engage suitable pins 24 in the 15 received in spaced openings in the columns. working scaffold. Planks or boards 25 are also My invention will best be understood by referlaid upon the beams 21. ence to the accompanying drawing in which I By operating the jack, the entire scaffold, inhave illustrated a preferred embodiment thereof cluding the working scaffold and the foot scafand in which Fig. 1 is a side view of a fragmenfold, are raised as a unit by the operator from 20 tary portion of a column and one end of a scaifold beneath the working scaffold. When the worksupported thereby; Fig. 2 is a fragmentary end ing scaffold has been elevated to the desired poview of a portion of Fig. 1; Fig. 3 is a fragmentary sition, the pins 12 are inserted through openings plan view of one end of one of the needle beams. 11 beneath the needle beams and the working Fig. 4 is a perspective view illustrating a plurality scaffold is thus conveniently held in its adjusted 25 of columns and the scaifold supported thereby, position. and Fi 5 is a perspective view illustrating a In the embodiment of my invention illustrated modified form of jack support. in Fig. 5, I have illustrated a modified form of Like reference characters indicate like parts supporting jack comprising a block 26 which is of throughout the drawing. substantially the same width as the column on 30 Referring now to the drawing, 10 indicates which it is tobe supported and to the sides of supporting columns provided with openings '11 which are secured arms 27 which embrace column which preferably extend transversely through 10, the arms 27 being provided with holes 28 the columns and in which are received pins 12 through which pins may be inserted and which which extend well beyond the columns as indiextend through openings 11 in the columns.

cated in Fig. 2. Assuming that the scaffold embodied in my 9 Needle beams 13 are forked at their ends, as invention is used for the purpose of building a indicated in Fig. 3, and may conveniently be wall, then when the wall reaches a height where formed of three strips, a comparatively short the masonry can no longer conveniently be laid, strip 131 which is substantially the same width as the working platform is placed in position by the associated column, and two longer strips 132 placing the forked ends of the needle beams 13 which embrace the column and engage and are over associated adjacent columns, and pins insupported on the ends of the pins 12. The strips serted beneath the needle beams to hold the same 131 and 132 may conveniently be secured together in position at the desired height. The platform by suitable clamping bolts 14 (see Fig. 3). 30 is then laid upon the needle beams. When the needle beams are raised by suitable jacks, operator while standing beneath the. working indicated generally at 15, which rest upon jack scaffold places the jack supporting member 16 in supporting members indicated generally at 16 position on the column 10, the arms 17 engagprovided with arms 17 which embrace opposite ing the ends of pins 121. The jack 15 is then notches 18 which engage other pins 121 in other the end of a needle beam, it being understood openings. The bottom portion .of the member that a similar jack is preferably placed at the 16 is also provided with laterally extending arms opposite side of the scaffold beneath the opposite 181 which also embrace the columns 10. The ends of the needle beam. The operator then 11 55 member 16 is provided at its upper portion with raises the needle beam to the desired position and places pins 12 in the openings 11 beneath the beam and on which it is then supported. The jacks and the jack supporting members may then, if desired, be carried to other parts of the scaffold for raising other parts thereof.

When the working scaffold has reached a height Where it is inconvenient for the operator to actuate the jacks from the ground, the foot scaffold is suspended from the working scaffold by means of the cables 23 and then, by standing on the foot scaffold, the operator can raise both the working scaffold and the foot scaffold as a unit.

By forming the needle beams with forked ends, which embrace the associated columns, there is no possibility of the needle beams being dislodged from the supporting columns.

While I have described my invention in its preferred embodiment, it is to be understood that the Words which I have used are words of description rather than of limitation and that the drawing is merely illustrative. Hence, changes within the purview of the appended claims may be made without departing from the true scope and spirit of my invention.

What I claim is:

1. In a device of the character described, a plurality of columns each provided with transversely extending spaced openings, supporting pins received in said openings, a needle beam engaging and supported by pins in said openings, a jack support, means for supporting the same on a pin in another opening, and a jack mounted on said support and engageable with said needle beam.

2. In a device of the character described, a plurality of columns each provided with transversely extending spaced openings, supporting pins received in said openings, needle beams the ends of which are forked and adapted to embrace a column and be supported by the ends of pins located in said openings, a jack support comprising members extending on opposite sides of the associated columns and engageable with and supported by another pin in another opening and a jack mounted on said support and engageable with a needle beam.

3. In a device of the character described, a plurality of columns each provided with transversely extending spaced openings, supporting pins received in said openings, needle beams the ends of which are forked and adapted to embrace spaced columns and engage and be supported by pins extending through said openings, a jack support, means for supporting the same on a pin in another opening, a jack mounted on said support and engageable with a needle beam and a foot scaffold suspended from said beams.

' CLAUDE H. ADAMS.