Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 160
anddisengaging notched bar fromstops r r\ worked by pin /. k Notched bar fixed to table andstopped by projecting stops kalternately on either side fur eachrivet.Handle, pinion, and rack, for ad-vancing table by hand. m Moveable table for carrying plateto be punched, drawn along byrope or chain… … i. a Shaft running through building. b Crank. e Coimecting-rod. d Upper lever worked by connecting-rod e. c Lower or punching lever engaged or disen-gaged by means of rods, levers, and pin c. f Punching-frame raised or depressed by leverc, and counterbalance weighty. g Lever and counterbalance…
Mechanical engineering · Mechanics · Engineering
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