Knight's American dizionario meccanica : una descrizione degli attrezzi, strumenti, macchinari e processi e ingegneria, storia delle invenzioni, generale vocabolario tecnologico ; e il digest di apparecchi meccanici nel campo della scienza e delle arti . yline liyalurc ; il ligatured pezzo di iris sloiiylis ortin un paio di giorni, e l'allievo rimane nella sua nuova posi tion. Irido-desis. c. Il funzionamento è anche formata dividendo con forbici.L'iris con due iiuisions, divergente fromeach altri, l'allentamento di forma triangolare ilaps ofiris essendo lasciata a inaridirsi fino. Puppet. 1. (TvriibKj.) .standard ri.cantare ver-ticall

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Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . yline liyalurc ; the ligatured piece of iris sloiiylis ortin a few days, and the pupil remains in its new posi-tion. Irido-desis. c. The operation is also formed by dividing with.scissors the iris by two iiuisions, diverging fromeach other, the loosened triangular-shaped ilaps ofiris being left to shrivel up. Puppet. 1. (TvriibKj.) A .standard ri.sing ver-tically from the bed or shears of a lathe ami holdingthe ecnicrs on which the work is placed to revolve.In the ordinary lathe the head-stock has also amandrel and grooved wheel to which motion is im-parted by a band. The puppets are also known ashetid and tail stocks. 2. A disk-valve having a stem and vertical motionto and from its seat. Puppet-head. Of a lathe or boring-machine.A sliding device on the U|i)ier part of the bed ; itholds the liack center, and may be fixed at any re-quired ilistance from the front center. Puppet-valve. A vah-e which moves verticallyand is guided to and from its siat by a central ver- Fig, 4051. T---^^?^. tical stem, coincident with the •axis of the seat. In the exam-ple, the puppet-valves govern-ing the supply and exhaust ofsteam to the cylinder are actu-ated by cams on a revolvingshaft. The valve-stems are guided above in sockets in- theto]) ])lates of the valve-ehests, antl by removing these platesthe valves may be reached or removed.! Purchase. A mechanical power to increase thepower applied. The names arft various ; some indi-cate a difterence in character, others merely in appli-j cation. Among them are: whip, whip-upon-whip, I laff-tacklc, /iijr-upmi-luff, runner, d&uble-runner, I barton, jeer, viol, yun-lackle ; as well as winch, gin. Puppet- Valves. PURCHASE-BLOCK. 1836 PUTTY-POWDER. Fig. 4052.

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• bookcentury1800
• booksubjectin