Far infrared to Femalethread

Far infrared to feed
tricity the weight of the products of electrolysis is proportional to their electrochemical equivalents.
Far infrared. The part of the spec­trum towards the end of the infra­red region of the electrmagnetic spectrum which is near the radiowave region.
Farmers'drill. (Metalwk.) A str~ght­fluted twist drill, used on soft met­als.
Farm out. (Print.) To sublet. . Fasces. (Furn.) A decorative orna­ment in the form of a bundle of rods bound with a projecting axe; a roman badge of authority.
Fascia. (Arch.) A flat, broad member in the entablature.
Fascicle. (Bookbndg.) One of the parts of a book published 'separately.
Fast charger. (Auto.) Electrical de­vice for recharging any capacity lead plate storage battery in 30 min. or less.
Fast pulley. A pulley employed to transmit motion, being attached to its shaft by a setscrew or a key.
Fastening. (Mech.) Such holding de­vices as bolts, screws, keys, etc.
.Fat. (Cream.) A term applied to very sticky clays~ (Chern.) An ester of glycerin and a higher fatty acid. The acid is generally oleic, stearic, or palmitic, although other acids form esters which are regarded as fats. (Print.) Printed matter that is full of illustraition, blank lines, or open spaces.
Fathom. A unit of measurement equaling 6 ft. or 1.828. meters. Fatigue of material. Material which has been long subjected to severe or moderate straining deteriorates in strength, and will break under loads previously sustained with safety.
Fat spark. (Auto.) An ignition spark that is short and thick.
Faucet. (Plumb.) A fixture attached to the end of a pipe having a spout and valve to permit the drawing off and control of flow of liquids.
Faun. (Arch.) A legendary demigod, represented by' a baif ~ and half man, used as decorative detail in work of the Adam ptriod.
Fauteuil. (Furn.) An armchair of French design open under the arms, in contradistinction to the bergere, an eighteenth-century up-holstered armchair.
Favus. (Arch.) Diaper detail, resem­bling the cell in a honey-comb.
Feather. (Aero.) In rotary wing sys­tems, to periodically increase and decrease the incidence of a blade or wing by oscillating the blade or wing about its span axis.
Feather or sunk key. (Mach.) A par­allel key which is partly sunk into a recess in its shaft, so as to form an integral part of the shaft. The key-way in the wheel or clutch carried on the shaft is made large enough to permit these parts to slide longitudinally on the shaft.
Feather edge. A keen edge, tapering off to nothing.
Feed. (Print.) To supply paper to be printed to a press. (Mach.) in ma­chine-tool operations, refers to the rate of tool travel across a surface

Feedback to Female thread

from which material is being re­moved. Feedback. Signal from output of am­plifier or electroni« network applied to input in antiphase (hence nega­tive feed back) to reduce distortion and noise, and to flatten or otherwise shape frequency response. Also, unwanted acoustic feedback.
Feed~back coil. (Radio.) A coil con­nected in the plate circuit of a vacuum tube; used to reintroduce or feed back energy from the circuit to the grid circuit of the same tube.
Feed edge. (Print.) The front edge of the sheet which feeds to the grip­pers and is carried around the cyl­inder of a press. .
Feeder. (Elec.) The line which carrieds the supply of current to the branch circuits. (Print.) (I) One who feeds
work to a .press. (2) A device which automatically regulates the feeding of sheets on a press.
Feed gears. (Mach.) Gears used to drive the feed rod and control the rate of feed.
Feed guides. (Print.) Printing-press accessories which bring the sheet into position for printing.
Feeding. (Print.) Supplying a press with sheets.
Feed mechanism. (Mach.) Consists of an arrangement of gears, screws, or other devices for controlling the feed of the tool to the work or the work to the tool.
Feed pipe. (Plumb.) A main line pipe; one which carried a supply directly to the point of use, or to secondary lines.

Feed screw. The screw by means of whose rotation a measurable amount of feed is imparted to the cutting tool of a machine. '
Feed-water heater. A boiler in which the supply water for a steam boiler is heated, preliminary to being taken up by the pump or injector.
Feeler. (Mach.) Gauge for determin­ing the size of a piece of work, the accuracy of the test depend­ing on the sense of touch.
Feet. (Print.) The two parts, at the bottom of the body, which support the type.
Feldspar. (Chern., Bldg. and Pot.) Anyone of a group of rock-form­ing minerals which consist Of sili­cates of aluminium with potas­ sium, sodium, or calcium.
Felloe or Felly. The rim, or seg­ment of the rim, of a wheel to which the outer ends of the spokes are attached; on Ii wagon wheel the felly supports the metal rim.
Felt papers. (Bldg.) Used as sheath­ing papers on roofs and the side
walls for protection against dampness, heat, and cold. Those used for roofing are often impregnated with tar, asphalt, or chemical com­pounds.
Felt side of paper. The finish given to paper far the purpose of partly eliminating the wire or screen mark on one side of it.
Female. The recessed portion of any piece of work into which another part fits is called the female por­tion.
Female thread. A thread which is cut in a hole or on a hollow sur­