Handbook of construction plant, its cost and efficiency (1918)
Dana, Richard Turner, 1876-1928 · New York, McGraw-Hill book company, inc., [etc., etc.] · leaf 443
Fig. 187. Petrolithic Gang Rooter. Combined Plow,and Scarifier for Road or Other Heavy Worl<. Rooter peculiarly shaped spikes instead of cutting discs. It is usuallydrawn by four horses. Wlhen used in connection with the rooter,its particular function is to break up and pulverize the clods. … Fig. 188. Petrolitliic Rotary or Spike Disc Scarifier. It is also used to scarify. Weight of machine 1,300 pounds,price $175. Boad Cultivator: Fig. 189, This machihe is designed to thor-oughly mix the dry and liquid materials. Weight of machine700 pounds, price $80. Road Asphalt Distributor: Fig.…
Contractors' operations · Building
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