Caster cup to Cavil

Caster cup Small wheel attached to the feet, or base, of a piece of furniture to aid in moving without damage to the floor.
Caster cup. (Furn.) A cup of glass or wood placed un.der a caster to
distribute weight of an article of furniture over a large area to avoid marring the floor.
Casting. (Ceram.) The process of making pottery in molds from fluid clay. (Metal.) Metal part made by pouring the meta~ when liquid, into a mold. (Plast.) Pouring liquid, catalyzed resin, usually with fillers and pigment, into an open mold, where it hardens.
Casting copper. (Metal.) Inferior to electrolytic and lake copper. It is obtained from a variety of copper ores and from by-products ofbrass foundries.
Casting off. (Print.) Measuring type to see how it will divide into pages.
Casting strains. (Metal.) Phenomena caused by shrinkage in a casting during cooling..
Casting up. (Print.) Consists of measuring the amount of type set to determine the cost of composition.
Cast iron. Iron of ordinary use, cast in molds; has high carbon content; cannot be rolled, forged, or tempered. Cast-iron nickel alloys have many of the properties of steel castings.
Cast-iron boiler. A container, built up of vertical or horizontal sections of cast iron and used for generating low-pressure steam or hot water. Small sizes are frequently round, with a circular grate and horizontal sections joined with tee rods and push nipples. Larger sizes are usually rectangular and made with vertical sections. These sections may be joined internally by push nipples and tee rods, or externally by outside headers through which the stearn and water pass.
Cast phenolic resins. (Chem. Plast.) This class of resins is prepared from phenol and formaldehyde. Tensile and compressive strength are high and a wide range of colour effects is obtainable. They are non inflammable and readily machinable. Used as panels, novelties, laminating varnishes, etc.
Cast resinoids. (Plost. Art) Plastic ma­terials shaped by a casting process.
Cast steel. (Mech.) Steel made into the desired shape by the casting process as distinguished from other methods.
Cat. (Furn.) A small piece of tripod furniture with a tripod upper section for resting dishes to warm before the fireplace. .
Catalpa. (Wood) Also known as Indian bean and cigar tree. Wood is soft and coarse grained but is durable in contact with soil. Used for poles, cross-ties, etc.
Catalyst. (Chem.) A substance which aids in bringing about a chemical change without itself being altered or changed. (Plost.) A chemical sub­stance added to a liquid resin or a resin compound which initiates chemical action in the plastic, caus­ing its molecules to link and form into chains (polymerize). When the reaction is complete, the resin is "hard. "

Catapult. (Aero.) A device by which an airplane can be launched at fly­ing speed.
Catch basin. A cistern, basin, or depression, at the point where a gutter dischargs into a sewer, to catch matters which would not readily pass through the sewers. A reservoir to catch and retain surface drainage.
CatCh line. (Print.) A line necessary to bind the main lines of a piece of advertising together, but consists of unessential words.
Catenary. (Math.) The curve fonned by a flexible, inextensible, slender cord suspended by its ends.
Cathead. (Mach.) A collar loosely fit­ted to a shaft and attached to it by means of headless setscrews. It is used to prevent a steady rest from marking the work.
Cathode. The negative pole of an electric battery.

Cathode rays. (Elec.) Streams of ele­ctrons emitted from the filament (called the cathode) of a vacuum tube under the influence of high voltage and which, by suitable means, can be brought outside the tube.
Cathode-ray screen. (Tel.) The fluo­rescent material covering the inner surface of the picture end of the kinescope.
Cathode-ray tube. (Tel.) An elec­tronic tube in which streams of electrons are shot from a cathode and are fonned into a narrow beam di­rected by means of electrostatic or magnetic fields over a traget, usually a photosensitivie plate or a fluores­cent screen which glows wherever the beam strikes it.
Cation. (Elec.) The element or posi­tive ion which appears at the cath­ode or negative terminal in an elec­trolytic cell.
Catwalk. (Aero.) A narrow footway
along the keel of a rigid airship.
Caul. (Shopwk.) A tool used in fonn­ing veneer to the shape of a curved surface.
Cauliculus. (Arch.) One. of the slen­der stems springing from beneath the abacus of a Corinthian capital.
Caulking. (1) Setting the edges of plates in a riveted joint with hammer and caulking tool to insure a tight joint. (2) In general, making a joint tight or leal-proofby forcing plastic material between parts that are not tightly fitted.
Caustic soda. (Chem.) NaOH (Sodium hydroxide) Lye; much used in tex­tile mills for cleaning, scouring, etc.
Cavetto. (Arch.) A quarter-round, con­cave molding.
Cavil (Masonry) A type of heavy sledge with one blunt and one pointed end. Used for rough shaping stone at the quarry .