. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 441. PRINTING TELEGRAPH. The type wheel, /, driven byclockwork mechanism from the spring barrel, is placed on a shaft con-centric with the ratchet, k, which iscontrolled by pallets of the escape-ment, / /, attached to the per-manently magnetized armature, m,vibrated b
. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 441. PRINTING TELEGRAPH. The type wheel, /, driven byclockwork mechanism from the spring barrel, is placed on a shaft con-centric with the ratchet, k, which iscontrolled by pallets of the escape-ment, / /, attached to the per-manently magnetized armature, m,vibrated by alternating currentsthrough the electro-magnets, 0 electro-magnet, r, controllingthe printing escapement, is in thesame circuit, its core having anextension, w, and, being surroundedby a non-magnetic material, it is notoperated by the rapidly changingcurrents passing through 0 0, whichwork the type-wheel escapement;but when the key connected with any particular letter is struck, thecircuit is closed, sufficient magnetism accumulates in the core, w,to attract the armature, x, releasing the arm, u, carrying the paper-roller, s, and allowing a crank pin on the shaft of the wheel, t, turnedby a train of mechanism from the spring barrel, a, to depress that armof the lever and throw the feed roller up against the
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
