Chicago : Engineering and Contracting Pub. Co. · leaf 586
and on the cylinder, areuniversal joints which are connected with oneanother by a flexible hose. After a thoroughtrial this device was adopted, upon the rec- ommendation of a committee of two mechan-ical experts and a steamshovel engineer, whoreported that the capacity of a shovel wasincreased 100… … Fig. 2—Portion of Steam Shovel DipperDoor Showing Arrangement ofSpring Latch. the outward thrust of the piston of an air-brake cylinder. The mechanism is fixed uponthe boom of the shovel. A drum is mountedupon the face of the thrusting gear, or ship-per shaft, which revolves with the shaft,…
Buildings
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