Free end to Friction
much air as gasoline by volume, produces a mixture which will instantaneously ignite throughout its mass when the ignition spark occurs. ,
Free end In a cantilever, the end which is not fixed is alwilYs called the "free end."
Free fit. (Mach.) Gives a liberal allowance for running fits of machine parts.
Freehand Executed with the hand without the aid of drawing instruments.
Free sheet. (Papermkg.) Paper free
from ground wood pulp.
Free stone. (Arch.) Stone suitable for molding, ~tc., which may be cut or ,. carved with a chisel wihtout a tendency, to split. .
Free-wheeling. (Auto.) An overunning clutch placed in second and highgear assembly, permitting easy engagement and full coasting effect irrespective of engine speed.
Freneb curve. (Draw.) Also called universal curve or or regular curve. A .tool.used by.draftsmen in drawing curved lines which are not arc~.
French folio. (Paper and Print.) A thiri writing paper used for proofing and other work requiring a lightweight paper.
French seam. (Uphol.)A seam stand
ing upright.
French window. (Bldg.) A. doublesash caseinent window extending down to the floor and serving ~ a door to a porch or teirnce.
Freon. (Chem.) Dichlorodi~flouron methane. F12. Used as a refrigerant.
Frequency. (Eke.) The number of double alternations per second made by an alternating current. (Tel.) The number of vibrations or cycles in a unit of time. Radio waves fall into low frequencies, high. frequencies, ultra-high frequencies and micro waves.
Frequency me~r. (Elee.) An a~c. meter which indicates directly the frequency of the circuit to which it is attached.
Frequency modulation. (FM) (Tel.) A method of radio-wave transmission by which the carrier wave varies in frequency in accordance with the sound waves impressed on it while its amplitude (loudness or power) remains constant. .
Fresco. (Arch.) The method of painting on wet plaster. The term is often incorrectly applied to painting' on a dry wall.
Fres -air inlet. (Plumb.) A connection made to ~ house drain above the house or drain trap, Jeading to
. the outside atmosphere.
Fret. Ornamental work done in re. lief, characterized by angular interlocked or interlacing lines.
Fret saw. A saw. with a very narrow blade; used asa jig or scroll saw.
Friable. Easily crumbled or reduced to a powder.
Friction. The resistance to motion which is set up when two moving surfaces come in cOntact which each other.
Friction calender to Frosting
Friction calender. (Papermkg.) A calender having rollers of different sizes which glazes paper by the action of the smaller rollers.
Friction catch. (Furn.) A device used on small doors of articles of furniture to keep them tightly closed but not locked. It consists essentially of a spring and plunger contained in a casing.
Friction coupling. (Mech.) Anyone of a variety of couplings which operate through frictional contact.
Friction disk. The disk of a friction drive.
Friction drive. (Mach.) Transmission of power by frictional contact.
Friction of motion. (Mech.) That friction which mus~ be overcome by force in order to keep any solid, spherical, or cylinder body p1oving over a plane surface after it is once set in motion.
Friction of rest. (Mech.) That friction which must be overcome by force in order to start any solid, spherical or cylindrical body sliding or rolling over a piane surface.
Friction tape. (Elec.)An impregnated cotton insulating tape used to cover the rubber tape required to protect a splice in electrical conductors.
Friction wheel. Any wheel which drives or is driven by friction, as when contact takes place only between smooth or grooved surfaces.
Friesland design. (Furn.) Angular and circular design executed in flat carving.
Frieze. (Arch.) Any sculptured or ornamented band in a building; also the horizontal member of a cor'nice set vertically against a wall.
Frilled. (Furn.) A term used to refer to a scroll which has added decorative carving along its projecting edges, such as a frilled C-scroll.
Fringe. An ornamental edging for dresses, upholstery, etc.; in Europe, from the beginning of the Renaissance, consisting of a. band with hanging tassels or twisted threads of silk or other material.
Frise aileron. (Aero.) An aileron having the nose portion ahead of the hinge axis, the lower surface being in line with the lower surface of the wing. When the trailing edge of the aileron is raised, the nose portion protrudes below the lower surface of the wing, increasing drag.
Frisket. (Print.) A heavy sheet of paper stretched across the grippers of a job press, when certain parts of a form mark and spoil a sheet.
Frithstool. (Furn.) A round stool used in Anglo-Saxon times.
Fritted. (Ceram.) Refers to a glaze which contains some pulverized material which has been made insoluble by melting and suddenly cooling in water.
Frontis-piece. (Bookbndg.) An illustration in the front of a book, facing the title page.
Front-wheel drive. (Auto.) A construction in which the live propelling axle is at the front end. The rear axle is dead.
Frosting. (Plast.) An apparently crystalline pattern on the surface of a plastic.
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