The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 411
nal instead of internal w heel. NAIL MACHINERT. Bernard Fea«d Walker, of North Street, Wolverhampton, clerk, for Improvements in.machinery for maldng nails^—Granted March 6; EmoUedSeptember 6, 1844. This invention relates to certain improvements in nail cutting machinery,and in order to render the… … rod, one end of which is attached to a crank on the main shaft, a, the otherend being connected to the ends of two levers, c c, the upper one is attachedto a fixed centre, and the lower one is attached to the end of a sliding bar, rf, which carries the moveable cutter, e being the fixed cutter ; /…
Architecture · Civil engineering · Science
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