Operation and adjustments of the automatic three wire telephone (1915)
Decker, Benjamin Harrison · leaf 30
)It has two arras about 40 degrees apart that operate in a planeat right angles to shaft. Its function is to engage the leverlock and release talking springs. In normal position the lowerarm holds the talking springs in contact. 7/hen a call is to bemade it is very necessar:/ that these springs be… … Fig. E- Sin^l^Party, Line Telephone Kay bocurd. G roo/ic/ Post. 6.- f^ac<j V« k Hook, II- lk!»j Springs. S.-Rotai^y X^^, Spnti^. 5.-Wo^-mfl/ Stofi, IS- (governor.^. - L a\^e r Lock, 3,-Lever Lock Sfrr/n^. S.-5f»i€ler /frnt^rccktt^o.- Gear Wheel. Ftrptn ffuto, £teet. Go. T^rint. \
Telephone · Theses
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-707-321.webp)
