Fire escape – ladder – or scaffold – Ladder – With hook or grab
Patent
1978-06-05
1979-03-13
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Ladder
With hook or grab
182107, E06C 536, E06C 748
Patent
active
041437438
ABSTRACT:
A bracket including a clamp for removable clamped engagement with a ladder is provided for support from an upstanding inclined ladder and includes a rigid support arm projecting horizontally outwardly from the clamp and the side of the ladder facing in the direction toward which theladder is inclined. The outer end of the arm includes a mount supported therefrom for angular displacement about an axis extending transversely of the support arm and an elongated clamp arm is supported from the mount for oscillation therewith relative to the arm. The clamp arm is disposed at generally right angles relative to the axis of oscillation of the mount and is swingable with the mount in a plane generally paralleling the support arm. The clamp arm includes one end portion which may be lengthwise advanced and retracted relative to the mount. The mount and support arm include coacting structure for releasably retaining the mount in first and second predetermined angularly displaced positions including a first position in which the clamp arm extends in a direction disposed at generally right angle relative to the support arm and a second position with the clamp arm is inclined generally 45 degrees relative to the support arm toward the upper end of the ladder, respectively.
REFERENCES:
patent: 3603431 (1971-09-01), Nameche
patent: 3712419 (1973-01-01), O'Hara
patent: 3713510 (1973-01-01), O'Dell
patent: 3896900 (1975-07-01), Hunter
patent: 3910380 (1975-10-01), Nameche
patent: 4018301 (1977-04-01), Nameche
Jacobson Harvey B.
Machado Reinaldo P.
O#Brien Clarence A.
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