bviating all (1) It turns the type-wheel forward or backward risk of clerical errors. 1-72 part of a revolution at each pulsation; Third: To provide a system whereby a large num- (2) Winds the main spring, 4 (Fig. 5); ber (several hundreds, if so desired) of these machines (3) Winds the traversing… … said toothed wheels, 31, the automatic movements thus preserving a constant of the machine. tension upon the paper. The operation of the This tension is resisted printing-telegraph, so far by two pawls, a and b (Fig. 4), which engage a as its internal mechanical movements are concerned, (5) It…
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