| 摘要 |
A ladder support for a parallel rail extension ladder to be used as a step ladder in situations where there is no vertical support available for the upper ends of the rails. The support comprises a base frame piece running perpendicular to the rails of the ladder. The base extends left and right and has terminal pieces that run perpendicular with a cross bar at each end. Running perpendicular and intersecting the central portion of the cross bar is a support member parallel with the bottom rail and running around the upper end and perpendicular to the base section. Connected intermediately is the top portion of the adjustable support including the vertical support piece which is hinged to the cross member at one end and the cross member of the parallel. At the top of the parallel rails is a support bar running perpendicular to the support piece and having lateral pieces at the end thereof which serve to prevent the ladder from shifting left or right. The support member is adjustable in length to be able to adjust the incline of the ladder from vertical towards horizontal.
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