Clincher rim to Coaxial cable

Classical. (Arch.) Referring to the ar­chitecture of the ancient Greeks and Romans.
Classic molding~ (Arch.) Moldings similar to those used in the classic orders of architecture.
Classification. Arranging in groups by types or characteristics for easy identification.
Clavichord. (Furn.) An early musi­cal instrument, a forerunner of the modem piano.
Claw coupling. (Mech.) A loose cou­pling used in cases where shafts re­quire instant connection. It is some-what like a flange coupling, but instead has projections or claws cast on each face which engage in corresponding recesses in the faces opposite.
Claw hammer. (Carp.) A hammer used principally by woodworkers. It has a face for driving nails and a claw for use as a nail puller.
Clay. (Masonry) A common earth, compact and brittle when &y, but plastic w,hen wet. Used in the manufacture of bricks.
Clay wash. (Fdry.) Clay thinned with water and used for coating gaggers and flasks.
Clean. (Bookbndg.) A well-printed sheet; work well performed; a well-stamped cover.
Clean cut. A machined. surface is said to be "clean cut" when no blemishes or rough edges occur. The term is also often applied to a piece of work well designed and well executed.
Clean proof. (Print.) A proof which needs but few corrections. Opposite of dirty proof.
Clean thread. (Mach.) A screw thread that is sharp, smooth, and free of im­perfections.
Clearance. (Mach.) (1) In a lathe tool, the angle between the cutting edge and vertical position of the work. The clearance must be not less than 3 deg. and in most cases not more than 10 deg. (2) The amount of space, opel1 or free, between ad-jacent parts.
Cleat. (Carp.) A strip of wood or metal fastened to other material or nailed against a wall usually for the purpose of fastening something to it.
Cleavage. A split cleft or division. A tendency in a rock to divide in a cer­tain manner.
Cleft. (Mech.) Meaning "split"; stronger than sawed or "cut" stuff, and used for wooden hand screws, etc.
Clevis. (Mech.) A U-shaped iron such as is used to connect an automobile brake rod to a brake lever.
Climb cut. (Mach.).The cutting of metal, in a milling machine, in which the table moves in the direction of the rotation of the cutting tool.
Click track. In motion picture or television sound recording, an electronic metronomic is applied to the audio recording so that musicians can synchronise the musical tempo with the visual action or frame rate. The channel carrying the metronome signal is known as the click track.
Clinch. (Shopwk.) To secure more firmly as by bending down the ends of protruding nails.

clutch (Auto. Mech.) A device placed between engine and trans­mission which pennits the engine to run free when the left foot pedal is depressed, or to drive the car when the pedal is released. (Meeh.) A device making temporary con­nection betWen pieces of shafting, etc.
Clutch pedal. (Auto. Mech.) The left foot pedal which Connects and dis­connects the clutch.
Clutch pressure plate. (Auto. Meeh.) Part of the clutch assembly consisting of a metal ring mounted on levers. Helical springs exert a pressure on this clutch plate, which pressure in turn passes to the clutch disk and to the machined face of the flywheel, providing the necessary friction to transmit power from engine to transmission.
Coach. (Auto. Meeh.) Has an en­closed two-door-type body with separate seats in front and full width cross seat in rear.
Coal. A solid, brown to black, in­flammable substance dug from the earth. It is fonned from prehistoric vegetable deposits. As shipped from the mines, its principal use is for fuel although many chemical by-products are of great impor­tance.
Coal gas. Gas produced by the de­structive distillation of bituminous coal Illuminating gas.
Coal sizes. The sizes by which an­thracite coal is marketed are as fol­lows, diameter of opening through which or over which coal will pass:

Coal tar. The black pitch distilled from bituminous coal condensed in the manufacture of coal gas. Widely used in the arts.
Coat. An application of paint, plaster, or other material done at one time.
Coated lens. (Photog.) One with an ex­tremely thin coating fonned by heat­ ing under certain conditions which results in increased efficiency.
Coated paper. (Papermkg.) A highly enameled paper either in glossy or dull finish necessary for high-grade halftone work. .
Coaxial. (Math.) Anything with axes that are coincident like an ellipse or a hyperbola.
Coaxial cable. (Tel.) A specially de­signed cable which will carry picture singals. It consists of two concentric electrical conductors (a cylindrical conductor with a single wire centered along its length) which are separated by an insulating medium.