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In mechanics an apparatus on the principle of the seesaw, in which one end rises as the other falls. Bascule bridge, a counterpoise or balanced drawbridge, which is opened by sinking the counterpoise and thus lifting the footway into the air.

An apparatus for generating voltaic electricity.

A metallic post attached to electrical apparatus for convenience in making connections.

A place and apparatus for boiling, as for evaporating brine in salt making.

To form or enlarge by means of a boring instrument or apparatus; as, to bore a steam cylinder or a gun barrel; to bore a hole. Short but very powerful jaws, by means whereof the insect can bore, as with a centerbit, a cylindrical passage through the most solid wood. T. W. Harris.

An apparatus for testing the power of a steam engine, or other motor, by weighing the amount of friction that the motor will overcome; a friction brake.

A brewhouse; the building and apparatus where brewing is carried on.

e of a current in a certain wire forming a bridge or connection between two points of the apparatus; -- invented by Sir Charles Wheatstone.

t an electrical current to or from the commutator of a dynamo, electric motor, or similar apparatus.

An apparatus, especially an inclined trough or vat, in which stamped ore is concentrated by subjecting it to the action of rynning water so as to wash out the lighter and less valuable portions.

An elastic apparatus or fender, for deadening the jar caused by the collision of bodies; as, a buffer at the end of a railroad car.

An apparatus for delivering measured quantities of liquid or for measuring the quantity of liquid or gas received or discharged. It consists essentially of a graduated glass tube, usually furnished with a small aperture and stopcock.

nce. It consists of two or more cylinders revolving nearly in contact, with the necessary apparatus for moving and regulating.

An apparatus for conveying and distributing heat, especially by means of hot water circulating in tubes.

An apparatus for measuring the amount of heat contained in bodies or developed by some mechanical or chemical process, as friction, chemical combination, combustion, etc.

An apparatus used in beet-sugar factories to heat the juice in order to aid the diffusion.

An apparatus in which the images of extermal objects, formed by a convex lens or a concave mirror, are thrown on a paper or other white surface placed in the focus of the lens or mirror within a darkened chamber, or box, so that the oulines may be traced.

An apparatus in which coal gas, hydrogen, or air is passed through or over a volatile hydrocarbon, in order to confer or increase illuminating power. [Written also carburettor.]

One that carburets; specif., an apparatus in which air or gas is carbureted, as by passing it through a light petroleum oil. The carburetor for a gasoline engine is usually either a surface carburetor, or a float, float-feed, or spray, carburetor. In the former air is charged by being passed over the surface of gasolin…

perforated pasteboard or sheet-metal plate for warp threads, making part of the Jacquard apparatus of a loom. See Jacquard.