. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . of this shaft works into a worm-wheel 6^ keyed to the shaft of the vulcanized rubber roller b,which, as before stated, takes the type from the bands a o, and passes them forward under theguide-plate c to the front end of the file F ; the rotation, therefore, of the screw-shaft gives, 1568 FOUNDING AND CASTING. through the worm-wheel 6^ a slow rotary motion to the roller 6. The rotation of the bands a isobtained from a band-pulley on the end of the worm-whee
. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . of this shaft works into a worm-wheel 6^ keyed to the shaft of the vulcanized rubber roller b,which, as before stated, takes the type from the bands a o, and passes them forward under theguide-plate c to the front end of the file F ; the rotation, therefore, of the screw-shaft gives, 1568 FOUNDING AND CASTING. through the worm-wheel 6^ a slow rotary motion to the roller 6. The rotation of the bands a isobtained from a band-pulley on the end of the worm-wheel h^ by means of a band a^, which passesover and drives a pulley keyed to the short shaft a^, on the opposite end of which is keyed theouter pulley for receiving tlie bands a. The inner pulley, which keeps these bands at tension, isshown at a^. Figs. 3044, 3045. The traverse motion of the slides C and D is obtained from themain driving shaft I, through a connecting rod C\ jointed at its forward end to the slide C, and at its rear end to a poised crank-arm C^ on the end of the shaft I. A metal strap connects the slidesC and D together. For giving the motion to the finger d which pushes the type on to the file F,the roll ¿2, as it moves forward, is caused to enter the forked arm (P of a crank-lever carried bya bracket-arm d^. The arm # of this lever carries a crank-pin, which works in a fork projectingupwards from the slide d^. As, therefore, the roll d^ traverses within the forked arm, that armwill be caused to rock, and thereby traverse the slide d^ in its guides, and thrust forward thefinger d at the proper time for discharging the type on to the file surface F. In order to bringdown and retain the pad e in contact with the type on the file surface while travelling back withthe slide C, the pad is mounted on a sliding stem e\ which works in a guide fixed to the slide on the upper end of this stem is an adjusting screw carried by a rock-lever e^, which hasits
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Keywords: ., bookcentury1800, bookdecade1870, bookidsp, booksubjectengineering
