Mechanical movements, powers, devices and appliances; (1903)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The N.W. Henley & co. · leaf 379
d in contactwith the lever R and linked tothe index lever L, its endholding a pencil that marksthe variation of pressure on the graduated paper on a drum driven by a clock. DRAUGHTING DEVICES. 1531//. DOTTING IXSTRU-MEXT.—One of the toothedwheels for the kind of dotting re-quired is placed on the…
Mechanical movements
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