Mechanical weightlifting machine

Abstract

A mechanical weightlifting machine in which the machine has a support structure with an elevated pivot having a pivot axis and an articulating mechanism engaging the pivot. The articulating mechanism having at least one articulating structure with a lever arm that has a depending link connected to the weight being used by the weightlifter. The articulating structure having an adjustment mechanism with a displaceable connection device connected to a counterweight. The adjustment mechanism having means for moving the displaceable connection device relative to the pivot axis and actuation means for actuating the means for moving, in order to vary the effective weight removed from or applied to the weight being used by the weightlifter.

1 . A mechanical weightlifting machine, comprising: 
 (i) a support structure having an elevated pivot with a pivot axis;    (ii) an articulating mechanism engaging the pivot, the articulating mechanism having at least one articulating structure, the articulating structure having an upper arm structure having front and rear ends, wherein the upper arm structure includes a front section rotatable about the longitudinal axis of the upper arm structure, the front section having first and second distal ends on the front side of said pivot axis from which first and second depending link members are suspended, each depending link member having an end with means for engaging a bar, the articulating structure having an adjustment mechanism with a displaceable connection device with an effective connection point locatable on the opposite side of the pivot, the displaceable connection device having a counterweight;    (iii) means for moving the displaceable connection device relative to the axis of the pivot wherein the leverage of said counterweight directed to said upper arm structure is adjusted;    (iv) actuation means for actuating said means for moving; and    (v) a control device remote from the adjustment mechanism with control means for controlling said actuation means.