The elements of dynamic electricity and magnetism (1903)
Atkinson, Philip. [from old catalog] · New York, D. Van Nostrand company · leaf 333
registers, operated on the sameprinciple, are now in common use, by which two sepa-rate messages can be registered in parallel lines on thesame strip of paper, or one message only, on a singleline, as required. Inking registers, both double andsingle, are also in common use, and are generally… … Fig. 102. vertical and a horizontal arm, is pivoted on an archedsupport as shown, the vertical arm being concealed bythe support. The horizontal arm has a vertical move-ment between the poles of an electromagnet, limited bythe adjustable set-screws shown above on the left; andis held in contact…
Electricity · Magnetism
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