e number of subscribers in the system, each tele-phone in the system having a wire running under eachratchet wheel in central, and insulated from all thewires and ratchet wheels of the system except its own. This is the simplest system to which our attentionhas been called and would seem to be… … Fig. 3.-THE HOUTS TELEPHONE-SECTION OF CENTRAL OFFICE SWITCH. The call box as shown in Fig. 1 is designed for sixtysubscribers, while the central appliance in Fig. 2 hassixty wires, but only magnets and ratchet wheels enoughfor twenty-five subscribers. In making a call the subscriber presses the…
Patents · Bicycle · Feet · Scientific American · Munn · Calcium tungstate · Ratchet wheel · Horse power · Gas engine · Years ago · Call box · Pivotally connected · Sewing machine · Postal union
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