Jewelers saw to Joystick

to Joggle
water to divert current, to protect a harbor or shore.
. Jewelers' saw. A saw similar to a coping saw but having a saw blade hard enough for cutting metal and other substances.
Jeweling. (Furn.) The carving of an ornament on a surface so as to re­semble a jewel.
Jib. (Mech.) The swinging boom of a crane. (Naut.) A triangular sail set in front of the foremast.
Jib crane. A crane having a swinging boom or jib.
Jig. (Mech.) A device which holds and locates a piece of work and guides the tool which operate upon it.
Jig boring. (Mach.) A boring opera­tion upon a piece of work which is held in a jig, the tool being guided by some portion of the jig. The term boring indicates that the work is performed with a special boring tool, not with a drill.
Jig bushing. (Mach.) Hardened-steel bushing inserted in the face of ajig to serve as a guide for drills.
Jig, drill. (Shopwk.) A device for hold­ing work while drilling, having bushings through which the drill is guided so that the holes are cor­rectly located in the piece. Milling and planing jigs (commonly called "fixtures") hold the work while it is machined in the milling machine
and planer. .
Jigger. (Mach.) A mechanism which operates with quick up-and-down motion; a jolting device. (Pot.) A potter's wheel.

Jig saw. (Woodwkg.) A narrow, thin­bladed saw, to which an up-and­dowh motion is imparted, either by mechanical or by foot power. It has, to a great extent, been super­seded by the hand saw.
Jimmy. A short crowbar.
Job compositor. (Prillt.) A typeset­ter employed on job work.
Job press. (Print.) Any press used for job work.
Job printer. (Prillt.) A printer whose main business is small commercial work.
Job shop. A shop which specializes on repair work and on odd jobs rather than on a standard line of manufactured products.
Job ticker. (Print.) The definite in structions relative to a printing job. May consist of notations made di­rectly on the. copy but usually is a separate blank form.
Job type. (Print.) Type used for job composition which involves dis­play and variance in faces.
Job work. (Print.) Small, miscella­ neous kinds of work.
Jog. (Print.) To level or line up a pile of paper by a jogging mption.
Jogged. (Mech.) A piece which is notched or has a projection or de­pression is said to be jogged. The term is usually applied only to large. work.
Joggle. (Arch.) A dowel for joining two adjacent blocks of masonry. (Mech.) (1) A projecting pin or ridge, on a casting, which fits into a groove on the piece to which the casting is to be fitted, serving to.

Joiner to Joystick

pro~r1y locate the casting and to
make a more secure joint. (2) A shoulder to receive the thrust of a brace.
Joiner. (Woodwkg.) A woodworker in the shops. Specifically, one who makes joints.
Joinery"(Woodwkg.) The term relates to the various types of joints used by wood workers.
Joint. (Carp. and Shopwk.) To join, fasten, or secure two or more pieces together by any of the methods well know to artisans.
Jointer. (Masonry) A flat steel tool used for making the various tyws of joints between bricks upon the face of a wall, as the V, the conc;ave, beaded; square, etc.(Wood~"g.) A planing machine for wood.
Jointer plane. (Furn.) Iron plane with wood fittings, used for all kinds of plane work.
Jointing. (Masonry) The finishing of the exterior surface of mortar joints.
Joint runner. (Plumb.) An incombus­tible type of packing commonly used for holding lead in the bell in the pouring of lead joints.
Joint stool. (Furn.) A. stool of the Tudor period, marked by mortised joints. .
Joint, universal. .(Shopwk.) A shaft connection which allows freedom in any direction and still conveys a positive motion. Most of them can transmit power through any angle up to 45 deg.
Joist. (Bldg.) Heavy piece of planking or timber laid edgewise to form a floor support.

Jolt-ramming madline. (Fdry.) A molding machine for al1 classes of work from light to very beavy. The flli!:k reg\!: on a table which is raised by air pressure, then allowed to drop, thus packing the sand.
Jordan engine. (Papermkg.) In papermaking, a refining engine which regulates the length of pa­per fibers 'and clears the stuff. from the knots coming from the beaters.
Joule. (joul) (Elec.) The parctical unit of electrical energy. One joule is equal to .73732 foot pounds. One joule per second equals one watt.
Joule's law. The principle that the rate of production of heat by. a constant direct current is propor­tional to the resistance of the cir-. cuit and to the square of the cur­rent: the principle that the internal energy of a given mass of.aD ideal gas is a function of its temperature alone. .
Journal. (Mach.) The supporting por­tion of a shaft; that part which re­volves in the bearing.
Journal box. (Mach.) A bearing or axle box. .
Journey man. Properly, one who has gained a thorough knowledge of his trade by serving an apprentice­ship, although the term is often applied to any workman who is sufficiently skillful to command the standard rate of mechanic's pay.
Joyner. (Furn.) An early form of the work joiner, meaning a furniture maker.
Joystick. The control stick of an airplane, so called from the joy.that

Juke box to Jute manilla controlling the plane gives.

Juke box. A coin-operated phono­graph, having a variety of records that can be selected by push button.
Jump. (Forg.) To shorten and thicken a piece of metal as by hammering on the .end of a bar. To upset.
Jumper. A short length of the conductor used to made a connection, usually temporary, between termi­nals of a circuit or to by-pass a circuit.
Jump spark. (Mech. and Elec.) A spark produced by electricity jump­ing across a fixed gap, as between the joints of a spark plug.
. Junction. Place of union; point of meeting; joint.
Junction box. (Eelc.) A metal box when several conduits, etc., enter, and in which electrical conductors can be, or are, spliced.
Jurisdictional dispute. A dispute between two trades, as to which craft a certain kind of work be­longs.
Justtification. (Print.) Arranging the material to be used in a line so that it will' fit a given measure.
Jute board. (Bookbndg.) A tough though usually lightweight board, made largely from jute fiber, much used in check, note, and passbook work; also used as a cover stiff­ener in semiflexible work.
Jute bristoI. (Papermkg.) A strong bristol contaihing jute fiber.
Jute fiber. The woody fiber of a plant native to India. The plant grows to a height of from ten to fifteen feet and the prepared fibers are from four to eight feet long. Burlap web­bing and rope are made from the fibers. .
Jute Manila. (Papermkg.) A manila­coloured paper used for wrapping, envelopes, cards of various kinds, etc..