National Telegraphic Union · New York : N.T.U. · leaf 104
ther deflection after the points at a are in contactonly serves to move the head, D, the slide d remaining stationary. As soon as the main circuit is broken, theelasticity of the different parts causes the lever to returnto its original position, but the local circuit is instantlybroken when the… … In practice, this relay has been found so extremelysensitive, from the close proximity of the armature to thepoles of the magnet, that it sometimes records false sig-nals, arising from leakages from other wires, &c. Thisobjection, however, has been obviated by an adjustablefriction arrangement…
Telegraph
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
![An illustration from The Telegrapher [microform], 1864, leaf 104](https://img.insideoutlibrary.com/img/1024/ia-telegrapher05nati-104-57.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten10unit-541-367.webp)
