Boat jacks

Details Boat jacks Boat jacks

1977-02-28

1978-02-07

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Multiple lifters

214396, B66F 712

Patent

active

040722937

ABSTRACT:
Boat jacks operable in pairs to lift a boat off a wheeled carrier, each jack resting on a "T"-shaped base and supported by a tripod, each jack being specially modified by providing a horizontal lifting member on the front of the jack component that is movable up or down by a cranking arm, each horizontal lifting member being lodgable in longitudinally extending side channels provided on the hull of a boat, each base being clear of the boat, and a connecting chain provided between the horizontal lifting members to furnish additional lifting support to the jacks and to prevent their lateral movement one away from the other.

REFERENCES:
patent: 3158354 (1964-11-01), Ward
patent: 3640413 (1972-02-01), Klein

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