Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 147
V \. When tlie |punched are verj Long, roUers m to carry thi projecting ends of th< bi 128 is shown pan ofa frame, with a plate partly perforated. The racks 6 and i . I drawn with three teeth in tin- I. Dgth of a 1. W huh w ill di\ ide plates to :i four inch pitch . bul il « dl be obvious, thai… … JACQUARD PERFORATING MAC 11 INK. 141
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
