Step-out window washer box

Fire escape – ladder – or scaffold – Detachable window seat type – Interior wall-engaging means

Patent

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Details

Other Related Categories

A47L 302

Type

Patent

Status

active

Patent number

040798135

Description

ABSTRACT:
A collapsible structure which can be readily erected and supported outside of a window against an external building wall for use by a window washer, and can be withdrawn through the opening of the window after use. The structure is in the form of a rectangular box formed of frame members pivotably fastened to each other and fitted on each side, with a diagonal strut which is pinned in position to hold the structure open, and which bears against an external wall. A pair of horizontal struts extend from the erected box across the sill of a window and are each fitted with pivotal clamp arms to grip the inside structure wall under the window sill to hold the box in position for use.

REFERENCES:
patent: 959278 (1910-05-01), Wells
patent: 1423998 (1922-07-01), Camp
patent: 1458744 (1923-06-01), Brewster
patent: 2043864 (1936-06-01), Novak
patent: 2059739 (1936-11-01), Ment
patent: 2167982 (1939-08-01), Kerber

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