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ced round a cannon at the rear of the vent. -- Base plate, the foundation plate of heavy machinery, as of the steam engine; the bed plate. -- Base ring (Ordnance), a projecting band of metal around the breech, connected with the body of the gun by a concave molding. H. L. Scott.

A part of a brick with one whole end. Bat bolt (Machinery), a bolt barbed or jagged at its butt or tang to make it hold the more firmly. Knight.

Act of taking a bath or baths. Bathing machine, a small room on wheels, to be driven into the water, for the convenience of bathers, who undress and dress therein.

A number of similar machines or devices in position; an apparatus consisting of a set of similar parts; as, a battery of boilers, of retorts, condensers, etc.

ut of holes made to receive it, and which thus serves to engage or disengage parts of the machinery. Bayonet clutch. See Clutch. -- Bayonet joint, a form of coupling similar to that by which a bayonet is fixed on the barrel of a musket. Knight.

A portable punching machine.

The foundation or the more solid and fixed part or framing of a machine; or a part on which something is laid or supported; as, the bed of an engine.

A machine in which fabrics are subjected to a hammering process while passing over rollers, as in cotton mills; -- called also beetling machine. Knight.

l pulls and in changing the direction of bell wires at angles of rooms, etc., and also in machinery.

An instrument, utensil, or machine, which, by alternate expansion and contraction, or by rise and fall of the top, draws in air through a valve and expels it through a tube for various purposes, as blowing fires, ventilating mines, or filling the pipes of an organ with wind. Bellows camera, in photography, a form of ca…

cular ridge or series of ridges. Belt lacing, thongs used for lacing together the ends of machine belting.

The material of which belts for machinery are made; also, belts, taken collectively.

A slubbing or roving machine.

An animated picture machine for screen projection; a cinematograph.

An animated picture machine for screen projection; a cinematograph (which see).

the short end of a lever has upon the thing to be lifted, or the hold which one part of a machine has upon another.

(a) A metal plate temporarily placed before the upper part of a grate or open fire. (b) A machine for producing an artificial blast or current of air by pressure, as for increasing the draft of a furnace, ventilating a building or shaft, cleansing gram, etc.

laced on a spindle or pivot. It is used to hold yarn or thread, as in spinning or warping machines, looms, sewing machines, etc.

A kind of cotton lace which is wrought by machines, and not by hand. [Sometimes written bobbin net.]The English machine-made net is now confined to point net, warp net, and bobbin net, so called from the peculiar construction of the machines by which they are produced. Tomlinsom.

the perforated plate in a punching machine on which anything rests when being punched.