Signalling through space without wires : being a description of the work of Hertz & his successors . mz Fig. 29 (Fig. 12 of Specification 11,575/97).—Single-point Coherer, withclockwork Tapper-back operating on the projecting end of the springclamped at P and lightly touching a needle-point n. which Fig. 28 may be here reproduced; and likewise amodification of the point coherer depicted in Fig. 17, onpage 22 (see Fig. 29, and also fig. on page 27), where thespiral wire spring is replaced by a piece of straight watchspring, clamped at one end, adjusted by a screw at theother, and lightly touche
Signalling through space without wires : being a description of the work of Hertz & his successors . mz Fig. 29 (Fig. 12 of Specification 11,575/97).—Single-point Coherer, withclockwork Tapper-back operating on the projecting end of the springclamped at P and lightly touching a needle-point n. which Fig. 28 may be here reproduced; and likewise amodification of the point coherer depicted in Fig. 17, onpage 22 (see Fig. 29, and also fig. on page 27), where thespiral wire spring is replaced by a piece of straight watchspring, clamped at one end, adjusted by a screw at theother, and lightly touched by a needle point at its middle;a very gentle tapping-back stimulus being provided in theform of a clockwork or other mechanically-driven motorgrazing lightly against one end of the spring protrudingbeyond the clamp for the purpose. Fig. 30 shows a coherer inserted in a secondary or trans-former circuit, and operated inductively by the oscillations of 56 SS10MALLING WITHOUT Fia. 30 (Fig. 14 of Specification 11,575/97).—Another diagram of con-nections for Syntonic Receiver, with Coherer in a secondary or trans-former circuit; a conducting or a capacity shunt for the telegraphicinstrument being applicable as bef^e.
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Keywords: ., bookcentury1900, bookdecade1900, bookidsi, booksubjectelectricity
