| 摘要 |
<p>The apparatus comprises a central guide column 16, a carriage 18 movable along the column 16, at least one stack of weights 52, at least one weight selector bar, and body engaging means, such as a handlebar 38. The bar 38 includes gripping portions 40 and is connected to the carriage 18 by pivot plates 46, which allow adjustment of the attitude of the bar 38 and which are locked in place by bolts 66 biased to a locking position by a spring 76. Clockwise rotation of a camming plate 68 against the biasing of the spring 76 causes retraction of the bolts 66 in unison. <IMAGE></p> |
