rd as shown in Fig. 1, form a line has been made. When the rulerarm is set at only necessary to place the indicator in position and groove in which slides a wedge-shaped key, the key right angles to the rack bar, it will move with each count the strokes upon the bell as the eye follows the being… … printing disk and index wheel are pivoted for horizon- tal movement in unisoi: in either direction in a casing of teeth for which the take-up has been set, thus per- the pressure against the shaft is reduced to a mini- secured to the carriage, and the index wheel has radi- mitting of drawing lines…
Internet Archive · Public domain (published before 1931). Free to use for anything.