Machine Design
A fast and loose pulley drive is used when

Shafts are arranged parallel and rotate in the same directions
Shafts are arranged parallel and rotate in the opposite directions
Shafts are arranged at right angles and rotate in one definite direction
Driven shaft is to be started or stopped whenever desired without interfering with the driving shaft

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Machine Design
Turn buckle has

Right hand threads on bout ends
Left hand threads on one end and right hand threads on other end
Left hand threads on both ends
No threads

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