Toneann to Torsion balancer

Toneann to Tools, inserted cutter

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source, etc; quality or char-acter of sound; a musical sound of definite pitch; consisting of several relatively simple constituents called the fun­damental tone and the other harmon­ics or. overtones.
Tonearm. Common name derived from acoustical days when sound actually travelled along the arm.
Tongs. (Frog.) A two-legged instru­ment used for picking something up or for holding material while it is being worked; Also called a pair of tongs.
Tongue. (Woodwkg.) A projecting bead so cut on the edge of aboard that it may fit into a corresponding groove on the edge of another piece.
Tool bit. (Mach.) A small piece of high-speed steel mounted in a tool holder and used as a cutting tool.
Tool box or tool head. (Mach.) On planing machines, that assemblage of parts attached to the cross side which carries the tool It- is so con­structed that feed may be imparted to the tool.
Tool holder for .Iathe or planer. (Shopwk.) A bar, or piece of steel, into which a cutter is inserted, per­mitting the use of small pieces of expensive steel. The cutter may be removed for sharpening or renewal without moving the holder. ~ooling calf. (Leqther.) A bark-tanned leather, excellent for tooling work.
Tooling sheepskin. (Leather.) An in­expensive leather obtainable in col­ours. Adapted to the making of small articles, such as coin purses, card-holders, key cases, etc.

Tooling up. The preparation and assembling of special tools, fix­tures, etc., which enable a manu­facturer to use mass-production methods in putting out a product.
Tool, knurling. (Shopwk.) A tool, containing knurls, which is held firmly against a piece of revolving work to produce a milled surface, both for oIl\amentation and to pro­vide a better grip.
Tool maker. (Mach.) A workman skilled in the making of jigs, fix­tures, gauges, etc.
Toolmaker's. An all-metal clamp similar in design but smaller than a wood worker's handscrew or screw clamp.
Tool post. (Mach.) A circular post attached to the top of a lathe slide rest for the clamping down of the cutting tools.
Tool-post ring. (Mach.) The dish or ring, with concave upper face which forms a seat for the tool­post rocker.
Tool-post rocker. (Mach.) The fin­ger like part of steel inserted in the slot of the tool post to give proper adjustment for height of the cut­ting tool with regard to the work.
Toolroom. (Mach.) A room in which tools and parts are stored and from which they are issued to workmen; a shop where jigs, fixtures, etc., are made, stored, and repaired.
Tools, inserted cutter. (Shopwk.) Be­fore the invention of the high-speed steels, which are quite expensive, practically all tools for machine work were made in one piece of car­

Tool steel to Torsion balancerbon steel. Later, the difficulty of work­ing the high-speed steels, and their high cost, brought on the market tool holders, for which small cutters or blades, already formed to the desired shape, can be easily obtained.
Tool steel. (Metal.) Any of the car­bon steels or the "high-speed steels suitable for use as cutters.
Tool tip. (Mach.) A small cutting piece of cemented carbide, welded or brazed on the solid shank of carbon steel. See tungsten carbide.
Tooth. (Papemlkg.)A term used with reference to a paper finish denoting that it is suitable for crayon or pen­cil drawing.
Tooth face. (Mach.) The surface of a machine-tool cutter on which the chip impinges as it is cut from the work.
Toothing. (Masonry) Leaving a sec­tion of brickwork toothed so that the brickwork to follow can be bonded into it. It consists of allow­ing alternate courses to project a sufficient distance to assure a good bond with the portion to be built later.
Tooth ornament. (Arch.) One of the peculiar marks of the early English period of Gothic architecture, gen­erally inserted in the hollow moldings of doorways, windows,etc.

Top. (Textile) The long wool fibers for worsted yam prepared by the combing process.
Top dead center. (Auto.) The extreme top position of the No. I piston in its cylinder. This position is indj­cated by a mark on the fly-wheel. All adjustments for engine efti­ciency are made with relation to this position as a basis.
Topping. (Textile) Slipping a dyed material into a bath of another colour.
Torque. (Elec.) The turning effort of a rotor. (Engin.) The turning effort or twist which a shaft sustains when transmitting power.
Torque arm. (Auto.) An arm or pair of arms used to prevent any turn­ing of the rear-axle housing when power is applied to the rear axle.
Torque converter. (Auto. Mech.) A specially designed transmission used to increase torque at the rear wheels, providing a quicker pick­up.
Torque stand. (Aero., Auto.) A test stand on which the engine torque is measured.
Torque wrench. (Mech.) A wrench designed to disengage when the torque requir~ to turn a bolt or nut increases beyond a certain point; also a wrench with a gauge that shows pressure exerted.
Torsion. (Engill.) The act of twist­ing. The tendency to deform, as a rod, by twisting.
Torsional strength. (Engin.) The strength necessary to enable a bar or structure to resist a torsional strain. The strength of a shaft to resist torsion varies as the cube of its diameter.
Torsion balancer. (Auto. Mech.) A device mounted on the end of the