Inside Out Library · Explore

Scientific American, Vol. 83, No. 25 (December 1900) (1900)

leaf 3

An illustration from Scientific American, Vol. 83, No. 25 (December 1900), 1900, leaf 3
king two temporary shafts from a timber A new telephone transmitter and receiver has been The teeth of each ratchet-wheel are adapted to be en- staging in the river, since by this means it has bepn devised by Mr. Andrew Plecher, of Stanford University, gaged by spring-pawls held between the… … pact, wire is suspended, so wound that the AN IMFBOTEB TELEFHONE. individual turns nearly touch one an- FOWEB SCBAFEBS ON THE ST. LAWBENCE FOWEB other. One end of the coil is con- COMFANY'S CANAL. north and south, and to convey the ballast excavated nected with one diaphragm, D, and the other end…

Munn · Motor · Apparatus · Scientific American · Armor · Armored cruisers · American supplement · Sewing machine · Gas engine · Metric system · Building edition · Iron ore · Muzzle energy · Years ago

Internet Archive · Public domain (published before 1931). Free to use for anything.

More pictures from Scientific American, Vol. 83, No. 25 (December 1900)

More like this