Word: piston
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Dates: during 1880-1889
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...avoidance of "rushing" the slides. There was hardly the slightest perceptible "hang" of shoulders or hands at either end of the stroke. Although the body work was not all that could be desired, the "watermanship" or action of the blades was as smooth as the stroke of a piston...
...cylinder for all four men instead of one cylinder for each of four men, as is usual on hydraulic rowing machines. The two bow men pull on one yoke, and the two stern men on another. These yokes are pivoted on a cross head to the piston. By this arrangement the two bow men and the two stern men must pull exactly alike. It can be seen whether they take the stroke at the same time and pull alike...