Printing : a practical treatise on the art of typography as applied more particularly to the printing of books (1904)
Jacobi, Charles Thomas · London : G. Bell & Sons · leaf 291
by man, brake, orhorse—are in the market. In laying down engines, eithergas or steam, power should be in excess of what is actuallyrequired, so as to be amply provided. For small offices onehorse-power beyond the normal quantity is advised, whilstfor larger offices two, three, or even four… … Fig. 143.lubricator. SHAFTING AND RIGGING 261