| 摘要 |
<p>A weight stack training machine has a stack of weights 3 slidable vertically along a pair of guides 2 when lifted by a cable 7 which is connected to a hand grip or the like. In the upper part of the machine is an assembly for increasing the load felt by the user, consisting of a gas spring 18 connected between the machine frame 1 and an arcuate portion of a lever 11. At the opposite end of the lever is a pulley 12 around which passes a cable 13 anchored to the frame at 14 and connected at 15 to the weight selector rod 4. Listing the weights 3 causes the lever 11 to compress the spring 18 and give the user extra resistance.</p> |
