Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 732
with a car-riage which IS pro-vided with a pin- ■ , ,ion and crank. The operator by turning the crank moves the dril 1 to any point along the bar.In quarries and in stone-yards it is frequentiv noticed that a number of men arc employedto drill small holes, from 3 to 6 in. deep, in large blocks, for… … Fig. 7.—Plug-and-feafher bar. Vertical.
Mechanical engineering
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
