Mortise chisel to Molor
printing plate in which type charact~rs can be inserted. (Woodwkg.) A space hollowed out. as in a piece of wood, to receive a tenon; mortiseand-tenon joint.
Mortise chisel. (Woodwk.) A narrow face, heavy-bodiM chisel used in cutting mortises.
Mortise gauge. (Woodwk.) A woodworker's tool consisting of a block or head and a bar containing two scratch pins which can be adjusted to .the desired width of the mortise to be cut. .
Mortise lock. (Arch.) Any lock that is fitted into a mortise.
Mortising machine. (Woodwkg.) A machine for cutting mortises in wood, either by means ()f a chisel or by a circular cutting bit.
Mosaic. A design formed by small pieces of glass, stone, or tile, usually set in a ground in cement or stucco.
MOS FET. A FET utilising MOO (Metal Oxide Semiconductor) element.
Mosseclge. (Furn.) A decorative edge, made of a heavy-pile material, used in uphoLstery.
Mother. Positive shell used in disc record manu~acture. A few are produced from a negative Master and used in turn to produce negative stampers or matrixes employed for actual disc pressing.
Mother-of-pearl. The hard iridescent layer on the inner surface of certain shells, as the pearl oysters; used extensively for making buttons and other small articles.
Motif. (Furn.) A predomiant idea in design, or decoration.
Motion. (Phys.) Change of position which a body undergoes.
Motion study. (Masonry).Relates to a study of the movements of workmen in performing certain opera~ tions. Such study is made the idea of increasing the efficiency of mechanics by the elimination of unnecessary motions.
Motive power. (Engin.) The particular source of energy which is applied to activate a prime mover or a machine.
Motometer. (Mach.) A speed counter, as for a steam engine; also a speedometer.
Motor. (Elec.) A machine for transforming electrical energy into mechanical energy. (Mech.) An internal-combustion engine, as the gasoline engine of an automobile. Commonly refers to complete beltdrive turntable mechanism. including driving motor.
Motor analyzer to Mudsill
Motor analyzer. (Auto.) A group of instruments, usually assembled in a single case or on a single panel, by which such items as cylinder compression, air-fuel ratio, and ignition timing can be checked.
Motorboating. Type of amplifier instability due to inadequate HT smoothing or positive feedback to infrasonic frequencies. Sometimes heard as 'motor-boating' sound in loud-speaker. .
Motor drive. (Shopwk.) The modem method of supplying power to a machine by a motor, usually directly connected to it, as distinguished from the older style of delivering power from an engine, through the line shaft and countershaft to the machine.
Motor generator. (Elec.) Anelectric motor driving a generator changing alternating current to direct current, or the reverse.
Motor hoist. A hoisting device operated either manualy or by power.
Motor jet. (Aero.) A jet engine having its compressor driven by a reciprocating gas engine. An aircraft having such an engine.
Motor starter. (Elec.) A variable resistance box connected in series with a motor for starting duty. As the speed of the motor increases, the resistance is decreased until it is entirely cut out of circuit.
Motor torque. (Elec.) Turning effort. The turning moment or pull which causes rotation, or tendency to rotate, in a motor.
Mottled. Covered with spots of different colour or shades of colour. (Paper.) A paper with a variegated finish which is intentionally produced. Also applied to a defect called "crushing" present in the web during pressing which resembles curdled milk in appearance.
Mount. (Furn.) A fitting or other ornamented piece usually made of metal, placed on furniture to decorate and strengthen.
Movie. A motion picture theatre. Movieola. (Tel.) A motion-picture device for editing film.
Moving coil galvanometer. (Elec.) A sensitive instrument in which a movable coil supported in a strong magnetic field, set up by a permanent magnet, indicates or detects small currents of electricity flowing through the coil.
Moving-needle galvanometer. (Elec.) An instrument in which a movable magnetic needle indicates the pr-esence of an electric current flowing through a coil of many turns of fine wire wound around or near the needle.
Mucid. (musid) Musty; moldy. Mucilage. An adheSive solution made from a vegetable gum and water.
Muck bar. (Metal.) In the manufacture of wrought iron, the bloom is passed through muck rolls and is then known as "muck bar." Muck bar contains too much slag to permit the use of the metal without further refining. .
Mudsill. (Arch.) A foundation timber of a structure placed directly on the ground.
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