ards taken seen that thereis little loss from friction, and a con- during the recent official trial of the Baltimore falls diate crank arms and shafts with the platform in such tinuous rotary motion will be imparted to the driving short of that required by contract. The contract calls a manner that… … guides its movement along the fixed section. Itis also WOLFE’S AUTOMATIC RAILROAD SWITCH. provided near its center with a cam-shaped rabbet for and may be transmitted to shore by shafting or ropes a purpose presently to be described. At the end of the which is mounted in suitable bearings. A lever…
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