Architect and engineer . wall. At the start, doing this work by hand method was , Mr. Chas. H. McAllister, general manager of the Lake ErieConstruction Company, to whom this contract was assigned, finally de-cided to try out a recently patented paving breaker which consists ofan automatic, compressed air operated, pick and chiselling machine,similar to a non-rotating hand-hammer rock drill. It is light, extremelysimple and operated by one man when working downward. In this par-ticular case, however, it was found advantageous to use two men toeach machine. Until lately pavin
Architect and engineer . wall. At the start, doing this work by hand method was , Mr. Chas. H. McAllister, general manager of the Lake ErieConstruction Company, to whom this contract was assigned, finally de-cided to try out a recently patented paving breaker which consists ofan automatic, compressed air operated, pick and chiselling machine,similar to a non-rotating hand-hammer rock drill. It is light, extremelysimple and operated by one man when working downward. In this par-ticular case, however, it was found advantageous to use two men toeach machine. Until lately paving l>reakers have been principally usedby street railways, telephone, electric, power and gas companies fortearing up pavement of all kinds, for the laying and repairing of streetrailway tracks and the laying of electric cable ducts, gas mains, etc. It required three days time to demolish the west wall by the use oftwo CC-2r) breakers, which not only broke up the concrete in pieces large 102 THE ARCHITECT AND ENGINEER.
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