Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . PRINTING-TELEGRAPH. 18U0 PRINTING-TELEGRAPH. Fig. 3055. Copperplate-press; Lithographic Press; Tick-et-printing Press, etc. See also Perfectixg-pREss ; Web-press ; Cylinder-press. A valuable conipendiuTii of patents on printing-presses may be found in Ringwalts Encyclopiediaof Printing, pp. 236-248. 2. {Platc-printbuj.) See Copperplate Printing-press. Printing-t
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . PRINTING-TELEGRAPH. 18U0 PRINTING-TELEGRAPH. Fig. 3055. Copperplate-press; Lithographic Press; Tick-et-printing Press, etc. See also Perfectixg-pREss ; Web-press ; Cylinder-press. A valuable conipendiuTii of patents on printing-presses may be found in Ringwalts Encyclopiediaof Printing, pp. 236-248. 2. {Platc-printbuj.) See Copperplate Printing-press. Printing-tele-graph. An electro-magnetic tel-egraph which automatically records transmitted mes-sages. The term is, however, generally ajiiilied onlyto those which record in tlie common alphabet, sothat the message may be understood by an ordinaryreader. The first of this kind with which we are acquaintedwas invented in 1837 by the late Alfred Vail, wellknown for his connection with the early progress ofthe Morse instrunn-ut in tliis country. The operation of this depended on the synchronous vibrationof two pendulums, one at each station, by which the corre-sponding letters on the two type-wheels at the transmittingand receiving stations were simultaneously broujrht into verti-cal position, t
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