Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 392
ded with a lid at the other. They are covered withfelt or leather, and at the front they are furnished with a thick disc ofdrugget or leather, like the leathers of a common water-pump, but fittingquite loosely in the tube. Such a carrier, being placed in the tube at theCentral Station, Fig. 175,… … Fig. 177.—Receiving Apparatus.—Longitudifial Section. it again reached the Central Station, where it would be intercepted by thediaphragm. Fig. 175. But the carrier is stopped, if at any station the re-ceiving-tube is placed in circuit, and this is done when an electric signalindicates to the…
Inventions
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