Handbook of construction plant, its cost and efficiency (1914)
Dana, Richard Turner, 1876-1928 · Chicago, The M. C. Clark Publishing Co. · leaf 444
Fig. 187, Petrolithic Gang Rooter. Combined Plow, Rooterand Scarifier for Road or Other Heavy Work. peculiarly shaped spikes instead of cutting discs. It is usuallydrawn by four horses. Wttien used in connection with the rooter,its particular function is to break up and pulverize the clods. … Petrolithic Rotary or Spike Disc Scarifier. It is also used to scarify. Weight of machine 1,300 pounds,price $175. Koad Cultivator: Fig. 189. This machine is designed to thor-oughly mix the dry and liquid materials. Weight of machine700 pounds, price $80. Road Asphalt Distributor: Fig. 190. This is…
Contractors' operations · Building
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