prov:value
| - Although the pin and slot connection 67, 111 is an integral part of the interconnecting means between the support and pulley brackets 49, 61, nevertheless the particular means which effects pivoting of the support bracket 61, i.e. the shaft 91, the knob 107, etc., form no part of the present invention, however, and is not described further here but for a better understanding thereof, reference may
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