-foot car is em- repairing breaks in a burnt or injured bridge. In the The tread for the rocker is a T-shape, with the head ployed, two extra truss rods being placed under the latter emergency it is necessary that, without track- laid on the deck. The rocker itself consists of two car to prevent… … Hg. 2.—DBIVING DECK SWUNG ACROSS THE CAB, Fig. 3.—LEADERS BATTERED. ) 1901 SCIENTIFIC AMERICAN, INC.
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