Submarine telegraphs; their history, construction, and working. Founded in part on Wèunschendorff's 'Traitâe de tâelegraphie sous-marine' and compiled from authoritative and exclusive sources (1898)
Bright, Charles, 1863-1937 · London, C. Lockwood and son · leaf 747
ting Recorders.— On short cables, where it is not necessary to vibrate the siphon (on account of the greater strength of effective current), and in which the rate of signalhng adopted is not near the limit at which the cable can be \A-orked, modifications of the Thomson recorder in the form of… … 'w/ffmm'/m/m////m/m//////r e^ ^^ Fig. 85. —Permanent Magnet Recorder, with Side Fig. 84. Adjustment to Suspension Piece. coil itself which is suspended bifilarly top and bottom ; the lower fibres can be adjusted laterally, and there is also an adjustment for varying the tension on the fibres…
Cables, Submarine
Internet Archive · Northeastern University, Snell Library · Public domain (published before 1931). Free to use for anything.
