Operation and adjustments of the automatic three wire telephone (1915)
Decker, Benjamin Harrison · leaf 89
Fig. 9- Lock-out Re\cky. i^ ocA:/^^ TTc/ay r/a^^<tr: S.- Gr. Circuit ^prm^s. Z.^ Horm.l Contact Spr.n^. e.^r./k^-^ ^^^^^^ ^a^pcrt. T-jLock~<=>dt Co// 3.-T/ung<zr Tjp■ 3.- Gontact ^^ritf^ from HutD.£f^ct Co. Tr/nf. I! I 1 Ig; … ooX v^o1> -40- This means that there is a difference of potential between theline wires at the telephone where a second party attempts to call.Then when this party lifts the receiver the hook moves np andcloses the main lock-out springs as described under the spiderbracket. The loci--out coil is…
Telephone · Theses
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
