| 摘要 |
The load mechanism (20) mounted in the support frame of the machine comprises at least one guide bar (22) extending upwards from the underside of the mechanism, a number of weights (28) and a setting bar (26). The weights each have at least one round bore, a second bore and a slit extending away from the round bore, which is used to fit the guide bar inside the round bore. Both the round bore and slit are provided with an elastic clamp for closing the open end of the slit. The setting bar is received by a bore in the weight and is provided with a number of positioning holes around its periphery, which are used to receive a pin for selecting the number of weights to be lifted.
|
