Wrapping ConnectorsBelts, Cords and Chains Flat belts of leather or of gutta percha, round cords of catgut, hemp or other material, and metal chains are used as wrapping connectors to transmit rotatory motion between pairs of pulleys and drums.
Belts (the most frequently used of all wrapping connectors) require nearly cylindrical pulleys.
Wrapping connectors for communicating continuous motion are endless.
Wrapping connectors for communicating reciprocating motion have usually their ends made fast to the pulleys or drums which they connect, and which in this case may be sectors.
Transmitted by wrapping connectors to FG, and combined by that sheave so as to act on the fol w lower W, whose motion is the same with that of the centre of FG.