experiments on punching, experiments on shearing
*
Plate 19. Hydraulic Shearing Press
(detail)
illustrating Charles Little ("of Derby"), his "Description of a Hydraulic Shearing Press" (of James Eastwood 1808-1874 *), Proceedings of the Institution of Mechanical Engineers (London, 1858) : 70-77
University of Wisconsin, Madison copy; digitized December 4, 2008
Another difficulty arises from there being no means of limiting or measuring the power of the ordinary machines when driven by cranks, cams, or eccentrics; and in case of accident the momentum of the flywheel prevents the machinery stopping suddenly; and if it is desired to strengthen the machine, this can be done only by a great increase of weight, necessarily requiring much more power for driving the machine.
p 70
epigram from tables, page 73
tags: James Eastwood; Charles Little; drawing; experimental philosophy; hydraulics; mechanics; shearing