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 159
s for the pair of sections. Thus there is an extra strip betweenA and G, between B and H, etc. There is also an extra strip above theC-F assembly. The extra four connectors have their trunks wired to the top extrastrip. From the companion strip (under it) run wires to the extra stripsmentioned… … A-J5 Fig. 135.—Selectors trunking (one level) sections grouped by 2s, 3s and 12s. Connector 14 can be cut into service by soldering down its terminalat the ninth contact on the C-F support, and unsoldering the terminal ofthe short multiple on the B-H support above. This transfers the ninthcontact…
Telephone
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