Taggart, William Scott · London : George Routledge & Sons, Ltd. · leaf 70
but pulley B is being driven. By pullingthe rod H in the direction of the arrow, the lever centred at Fwill force the conical surface of C into contact with thecorresponding conical surface of B, the two will grip, and thefriction is sufficient for B to drive the shaft A through C.To stop the shaft… … c Fig. 72. C u B Fig. 73. contact by pressure, and for light work an effective drive isobtained. Variable speeds of B can be obtained by slidingB nearer to or farther away from the centre of A. In Fig. 73A and B are simple discs pressed into contact, and one drivesthe other by friction. A silent…
Textile machinery
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