. Appleton's dictionary of machines, mechanics, engine-work, and engineering. This instrument is shown in Fig. 3399, the greater part of which consists of the clock-work, spool, &c,required for moving the paper. Above the clock-work are two pillars, supporting an axis, upon whichis the adjustable wire-holder, the lower extremity of which is seen touching the fillet of paper. Bymeans of the connections and insulations of the pillars, axis, and wire-holder, the platinum wire, whichpasses over a little slip of porcelain at the end of the wire-holder, becomes part of the circuit, withwhich the two
. Appleton's dictionary of machines, mechanics, engine-work, and engineering. This instrument is shown in Fig. 3399, the greater part of which consists of the clock-work, spool, &c,required for moving the paper. Above the clock-work are two pillars, supporting an axis, upon whichis the adjustable wire-holder, the lower extremity of which is seen touching the fillet of paper. Bymeans of the connections and insulations of the pillars, axis, and wire-holder, the platinum wire, whichpasses over a little slip of porcelain at the end of the wire-holder, becomes part of the circuit, withwhich the two screw-cups on the right of the base-board are connected. When the wire needs adjust-ment, the wire-holder can be turned up on its axis. The bed supporting the fillet of paper is also ad-justable, so as to regulate the contact between the wire and the paper. This register requires a quantity current to produce the effect of ignition, and therefore needs a re-ceiving instrument and local battery, to be operated by the telegraphic circuit. Axial Telegraph. The axial tele-graph is founded on the tendency of abar of iron to bo drawn into a coil ofwiro, through which a galvanic cur-rent is mudo to pass. This influenceis increased whore two coils of wireare used, surrounding the legs of a U-shaped picco of soft iron, the power 3401.
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Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
