Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 465
her horn, withanother depression and raise of gate. The fulcrum of the lever is the centrepin of the wheel. In dropping the gate the lever holds it in position, the dogis thrown out, the lever thrown out from the horn, and the gate drops from itsown weight; if it sticks, it can be forced down by… … ENGINEERING DRAWING. 449 flumes leading to wheels the provision for their movement must be positive inboth directions, as they are of frequent use. Figs. 1056 and 1057 are the elevation and section of flume head-gates asmanufactured and used at Holyoke, Mass., for such positions. G G are plankgates…
Mechanical drawing
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