Automatic telephony; a comprehensive treatise on automatic and semi-automatic systems (1921)
Smith, Arthur Bessey, b. 1875, Campbell, Wilson Lee · New York : McGraw-Hill · leaf 127
er with its bank rods. If theremoval is to last for some time, or banks are installed without switches,the bank is held by a support which is bolted onto the connector shelf. A 100-line switchboard with rotary lineswitches (Fig. 88) is alsoarranged with two shelves. Each shelf has 50 lineswitches… … Fig. 90.—One-hundred-line switchboard, rotary lineswitches (back). r9 ? ? 9 9 ? rt.P.ti i i i l i I i i Connectors LincLP.F) l.Sw.Bd.
Telephone
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