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US349232A - Scaffold-bracket for ladders - Google Patents

Scaffold-bracket for ladders Download PDF

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Publication number
US349232A
US349232A US349232DA US349232A US 349232 A US349232 A US 349232A US 349232D A US349232D A US 349232DA US 349232 A US349232 A US 349232A
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Prior art keywords
ladders
scaffold
bracket
brackets
pivoted
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    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C7/00Component parts, supporting parts, or accessories
    • E06C7/16Platforms on, or for use on, ladders, e.g. liftable or lowerable platforms

Definitions

  • Figure l of the drawings is a representation of this invention, and is a perspective view.
  • Fig. 2 is also a perspective view.
  • Fig. 3 is a side view of the bracket folded up.
  • My invention relates to scaffold-brackets; and it consists in the construction and novel combination of parts, as hereinafter. described, and pointed out in the claim.
  • the devices comprising this invention are designed to be used in connection with ladders of the ordinary construction which are to be raised and leaned against the building or wall to be painted or otherwise treated, and the devices are applicable to either. the upper side or the lower side of the pair of ladders, as necessity may require.-
  • A designates the wall of abuilding
  • B a ladder of ordinary construction, two of which are needed with these improved scaffold-brackets.
  • the brackets are used in pairs, preferably, but more may be used where a large stretch of work is to be gone over, and each (No model.)
  • bracket consists of two nearly parallel bars, D E, with integral branches or arms F G, having downwardly-turned hooks H at their upper ends, said hooks H being designed to engage the rounds of the ladder.
  • shouldered bolts I Just below the shoulders M of the branch arms F G is pivoted the bifurcated upper end, P, of the pivoted arm Q.
  • the lower end of this arm Q is also bifurcated, and between the arms of the bifurcation is pivoted one end of the hook-arm or locking-lever B.
  • This lever B is curved near its unpivoted end, and is provided with a hook, S, and is designed to engage either one of the shouldered bolts I, to hold the brackets at their proper extension or adjustments.
  • brackets can be folded, and are thereby rendered convenient for transportation or for storage.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Stringed Musical Instruments (AREA)

Description

(No Model.)
, J. MITCHELL.
' V ISGAFFOLD BRACKET FOR LADDERS. No. 349,232. Patented Sept. 14, 1886.
INVENTOL? ATTORNEYS N PETERS, Plmmumv u hun Washington. u.-c.
UNITED STATES PATENT OFFICE.
J EHU MITCHELL, OF NEVARK, OHIO.
SCAVFFOLD-BRACKETVFOR LADDERS.
SPECIFICATION forming part of Letters Patent No. 349,232, dated September 14, 1886.
To all whom it may concern.-
Beit known that I, JEHU MITCHELL, a citizen of the United States, residing at Newark, in the county of Licking and State of Ohio, have invented certain new and useful Improvements in Scaffold-Brackets for Ladders; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon,'which form a part of this specification.
Figure l of the drawings is a representation of this invention, and is a perspective view. Fig. 2 is also a perspective view. Fig. 3 is a side view of the bracket folded up.
My invention relates to scaffold-brackets; and it consists in the construction and novel combination of parts, as hereinafter. described, and pointed out in the claim.
The devices comprising this invention are designed to be used in connection with ladders of the ordinary construction which are to be raised and leaned against the building or wall to be painted or otherwise treated, and the devices are applicable to either. the upper side or the lower side of the pair of ladders, as necessity may require.-
Referring by letters to the accompanying drawings, A designates the wall of abuilding, and B a ladder of ordinary construction, two of which are needed with these improved scaffold-brackets. The brackets are used in pairs, preferably, but more may be used where a large stretch of work is to be gone over, and each (No model.)
bracket consists of two nearly parallel bars, D E, with integral branches or arms F G, having downwardly-turned hooks H at their upper ends, said hooks H being designed to engage the rounds of the ladder. Between the parallel bars D E, which are quite near together, are interposed shouldered bolts I. Just below the shoulders M of the branch arms F G is pivoted the bifurcated upper end, P, of the pivoted arm Q. The lower end of this arm Q is also bifurcated, and between the arms of the bifurcation is pivoted one end of the hook-arm or locking-lever B. This lever B is curved near its unpivoted end, and is provided with a hook, S, and is designed to engage either one of the shouldered bolts I, to hold the brackets at their proper extension or adjustments.
\Vhen not in use, these brackets can be folded, and are thereby rendered convenient for transportation or for storage.
Having thus described this invention, what I claim, and desire to secure by Letters Patent,
lS I
The combination, with the parallel arms separated and held by the shouldered bolts and provided at their upper ends with diverging branches having hooks thereon, of the arm pivoted thereto and provided with the pivoted hook-arm, substantially as specified.
In testimony whereof I affix my signature in presence of two witnesses.
J EHU MITCHELL.
Vitnesses:
JONATHAN Runs, E. NroHoLs.
US349232D Scaffold-bracket for ladders Expired - Lifetime US349232A (en)

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