THE above illustrations show the modes of securing the gold adopted by the Port Phillip Company, at Clunes, they may be of service to those at a distance, who find it inconvenient to visit these extensive works. ... [ILLUSTRATED]
Article : 1,168 wordsTHE wearing of rollers for crushing purposes takes place in the direction of the greatest friction, or in lines around the periphery of the roller. Therefore a much-worn plain roller shows the shapes of teeth and ... [ILLUSTRATED]
Article : 744 wordsALL previous disengaging catches which I am acquainted with are subject to the serious defect of disengaging sometimes when it is not wanted, or of not disengaging when it is wanted, and the means taken ... [ILLUSTRATED]
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