Undertaking
Patent
1984-11-13
1986-12-09
Bagwill, Robert E.
Undertaking
272DIG4, A63B 2106
Patent
active
046276157
ABSTRACT:
A progressive resistance mechanism suitable for use with a weightlifting machine as provided having a base, a plurality of spaced vertical guide members, a carriage vertically reciprocating along the guide members and a plurality of weight stacks restingly supported by the base. An apertured selector post is slidably disposed through each stack and has a first pin for attaching a selected subset of weights from the stack for upward movement. A second pin on each selector post is provided for locking a slidable collar at selected positions on the post above the carriage. The collars may thus be set at different distances above the carriage. The upward-travelling carriage engages each collar in sequence to serially lift the associated weight stacks. The user thereby experiences progressively increasing weight resistance during the course of a single repetition.
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Bagwill Robert E.
Kramer Arnold W.
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