Word: swivelings
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Dates: during 1884-1884
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...Sargent has also introduced a system of swivel pulleys in the higher weights, so that side movements can be performed without involving any lateral friction. To the sliding chains and other machines of a similar nature, the perpendicular rods which support the pulleys have been directly attached, instead of being fastened to the wall or floor as has heretofore been the case. In this way each machine is entirely independent of stationary fastenings, and, when necessary, may be easily transported. Three horizontal bars, parallel to each other, have been placed in the gymnasium. By this means a greater variety...