mechanical+contrivances
51Machine screw — Machine Ma*chine (m[.a]*sh[=e]n ), n. [F., fr. L. machina machine, engine, device, trick, Gr. ?, from ? means, expedient. Cf. {Mechanic}.] 1. In general, any combination of bodies so connected that their relative motions are constrained, and by… …
52Machine shop — Machine Ma*chine (m[.a]*sh[=e]n ), n. [F., fr. L. machina machine, engine, device, trick, Gr. ?, from ? means, expedient. Cf. {Mechanic}.] 1. In general, any combination of bodies so connected that their relative motions are constrained, and by… …
53Machine tool — Machine Ma*chine (m[.a]*sh[=e]n ), n. [F., fr. L. machina machine, engine, device, trick, Gr. ?, from ? means, expedient. Cf. {Mechanic}.] 1. In general, any combination of bodies so connected that their relative motions are constrained, and by… …
54Machine twist — Machine Ma*chine (m[.a]*sh[=e]n ), n. [F., fr. L. machina machine, engine, device, trick, Gr. ?, from ? means, expedient. Cf. {Mechanic}.] 1. In general, any combination of bodies so connected that their relative motions are constrained, and by… …
55Machine work — Machine Ma*chine (m[.a]*sh[=e]n ), n. [F., fr. L. machina machine, engine, device, trick, Gr. ?, from ? means, expedient. Cf. {Mechanic}.] 1. In general, any combination of bodies so connected that their relative motions are constrained, and by… …
56Gilding — is the art of applying a thin layer of gold, simulated gold, or other metal to a surface. Products employed may be real gold leaf ranging in karats from 9 up to 24; imitation leaf composition gold, Dutch metal leaf, aluminum leaf, copper leaf;… …
57Rufus Porter — For the American football player see Rufus Porter (American football) . For the American poet see Rufus L. Porter .Rufus M. Porter (May 1, 1792 August 13, 1884) was an American painter, inventor, and founder of Scientific American magazine.Famous …
58keyboard instrument — ▪ music Introduction any musical instrument on which different notes can be sounded by pressing a series of keys, push buttons, or parallel levers. In nearly all cases in Western music the keys correspond to consecutive notes in the… …
59On the Equilibrium of Heterogeneous Substances — In the history of thermodynamics, On the Equilibrium of Heterogeneous Substances is a 300 page paper written by American mathematical engineer Willard Gibbs. It is one of the founding papers in thermodynamics, along with German physicist Hermann… …
60device — 1 Device, contrivance, gadget, contraption mean something usually of a mechanical character which is invented as a means of doing a particular piece of work or of effecting a given end. Device is the most widely applicable of these terms; it may… …
