US154720A

US154720A - Improvement in scaffolds

Info

Publication number: US154720A
Authority: US
Publication date: 1874-09-01
Anticipated expiration: 1891-09-01

Description

f NITED STATES JOHN T. scoTT, orv rrrTsBURG. PENNSYLVANIA.

iMPRovEMi-:Nr IN scAFFoLos.

Specification forming' part of Letters Patent No. 154,720, dated September 1,1574: implication tiled May 23, 1874. v

joint, and Fig. 3 4is a plan view of my invention. Y

, This invention relates to an improvement in scaffolds; and consists of a scaffold-bracket composed of two parallel horizontal pieces, provided with loops at their inner endsfor the reception of a flat bar, by which the bracket is held in position for use, a diagonal brace, the upper end ot' which is secured between the horizontal pieces, ,near their outer ends, by a 'removable bolt, and a tie, the lower end of which is provided with a joint, secured, by a removable bolt, to the diagonal brace, and near its lower end, the upper end of said tie being secured between the said horizontal pieces, near their inner ends, by a removable bolt, the horizontal pieces, brace, and tie above mentioned being each providedI with a series of holes for the reception of the removable bolts by which the said partsare held together, .into which holes said bolts may be mf` serted for the purpose of adjusting the several parts to either increase or diminish the height of the bracket, at the will of the operator, to meet the requirements of the work he has to perform. y

In the accompanying drawing,'the horizontal pieces A A', provided with the holes b b', have the metal loops'C securedto their'inner ends for receiving the b ar by which the bracket is heldin position for use. The diagonal brace D, provided withthe holes d d', has its upper V end secured. between the piecesA A', near their outer ends, bythe removable bolt E. 'The tie F, provided with holes ff', has its upper end secured between .the pieces A A', near` their inner ends, by the removable bolt G, and

.the lower end of thel tie F is'provided with a joint, H', which .-.is secured to the diagonal pieces A A to prevent them from slipping;

upon the bar K. The flat bar L is provided with elastic cushions M M, which can be read ily slipped on and oli', for the purpose of protecting the surfaces, against which said bar L would otherwise rest when in use.

At least two of the brackets must be used at one time, and as many may be used as the necessity of the case may require. When used by painters the'brackets are usually swung out of a window or windows. The foot of the diagonal brace D is rested upon the window sill or against the wall ofthe building, and the bar L, which is longer than the -width vof the window, is thrust through-the loops C of one bracket, or, if two brackets are to be used in the same window, through the loops C on both brackets. The cushions M are then,l slipped upon the bar L, and rest against the inside molding of the window-frame to prevent itY from being injured. The bracket is then ready to receive one end of the staging or platform. A second bracket must lbe swungfrom another window in a similar manner. It will therefore be seen that each bracket ,must be provided with a bar, L.

The removable bolts E, G; and I'and the series of holes b`b, d d", and f f' in the parts A A', D, and F adapt the brackets for adjust` ment to ditferentwsized windows and diii'erent- `sized stretches of work by' removing the bolts and inserting them in the required holes. The brackets are usually adjusted to a height that `will bring theplatform nearly to tlnsr-top'of- `the window when 'the foot of the brace D rests Aupon the window-sill. After the stretch of 4work above the windows has been finished the brackets are lowered, the foot of the brace.

D resting against the wall of the building and the inner end of the pieces A A upon the win-v dowsill. The `platform will be then, at such a height that the space between the windows .can be worked,

'Y Having thus described my -improvement,

what I claim as new and useful, and desire` to In testimony that I claim the foregoing imsecure by Letters Patent, is-. provements, as above described, I have here- Asa'old-bmcket Composed ofthe horizonlunto set my hand and seal this 30th day of ml pieces A A', provided with the loops C G April, 1874. and holes b b', thebraee D, provided with the y JOHN T. SCOTT. [L s.] holes d d', mid thetie F, provided with the joint H and the holes ff', secured together Witnesses:

by the removable bolts E, G, and I, substenv .E. A. ELLsWoRTH, itislllY as and for the purpose hereiubefore set THEODORE IIVIUNGEN.,y f.

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