The chain puller is used to draw two ends of a chain together in order to attach the “master link.” The device is operated by turning the screw S, which pushes the bar AB downward, thereby drawing the tips C and D towards one another. If the sliding contacts at A and B are smooth, determine the force F maintained by the screw at E which is required to develop a drawing tension T in the chains.

Given:

T =120 lb          

θ = 60 deg

a = 3 in

b = 1 in

Transcribed Image Text:

EN т т Фе