Horsehair to Hydrate

Horsehair to Hot wire ammeter

Horsehair.A material woven from the coarse hair of horse used for upholestring.
Horsepower.In machines the standard unit by which power is measured.one horsepower is equivalent to 33,000 pounds lifted one foot in one minute.abbreviated as H.P
Horseshoe magnet (Elec.) A magnet'shaped like a horseshoe or letter U.
Hose clamp. (Auto.) A clamp for mak­ing a tight joint between a' hose and some l,ess flexible object over which the end of the hose fits.
Hose coupling. A device, generally a union, for joining together the end of hose length.
Hot. (Tel.) Any area having or reflecting too much
Htobox.A bearing which from a poor fit or lack of lubricants has become overheated.
Hot die steel.Steel employed for foging dies used in contact with red hot metal.
Hot dipping.Any cleaning or coating process accompalished by dipping in a hot solution.
Hot embossing.Embossing by the use of heated dies.
Hot metal.A term applied to molten iron or brass when the temprature is too high for the class of work which is intended.
Hot plug.A spark plug with long porcelain runs warmer than one with short porcelain therefore it is often reffered to as a hot plug.
Hot rolled. (Metal.) Applied to the rolling of steel into commercial shapes while hot.
Hot short A condition of wrought iron in which it becomes brittle at a welding heat, so that it either welds with difficulty or does not weld at all. It is due to the pres­ence of sulphur.
Hot-wire ammeter. (El,ec.) An ammeter which makes use of the heating effect of current which causes a wire to elongate and move a pointer over a scale. This type of meter requires frequent adjustment and is now obsolete.

Hot working steel to Hydrate

Hot working steel. (Metal.) Steel containing anywhere from 5 to 15 per cent tungsten, some chromium, and a moderate carbon content. They arc used as hot working tools.
Hourglass worm. (Auto.) A steering gear, worm shaped like an hour­glass, of larger diameter at the end than at the middle, said to increase efficiency on extreme right or left turns.
Housed joint. (Carp.) A joint formed by a recess that receives the entire end of a board or timber. Differs from a dado by fitting four sides instead of two, and from a mortise and tenon in that there is no reduc­tion in size to form the tenon.
House drain. (Plumb.) The part of the lowest horizontal piping of a plumbing system which receives the discharge from soil, waste, and other drainage pipes inside of any build­ing and conveys the same to the house sewer.
Housed string. (Bldg.) A stair string with vertical and horizontal grooves cut on the inside to receive the ends of the risers and treads. Wedges cov­ered with glue are generally used to hold the risers and treads in place in the grooves.
House organ. (Print.) A publication made up partly of general reading matter and partly of advertising of the products of the business con­cern issuing it. Published periodi­cally and distributed to customers and those interested.
House slant. (Plumb.) A T or Y con­nection in a sewer to receive the connection of a house sewer.
Housing. (Mech.) A term of very general application usually refer­ring to a body casting, a main part, a container, a cover, or support for other parts.
Howe'truss. A form of truss used both in roof and bridge construc­tion; especially adapted to wood and steel construction.
Hub. (Patmkg.) The central portion of a wheel through which the axle passes; usually cylindrical in shape.
Hubbing. (Shopwk.) The forcing of a hardened die to "hub" into cold, soft steel to produce a die or mold. A depth of Yz in. is common. Pres­sure averages 100 tons to the square inch.
Hub dynamoneter. (Aero.) A device built into a propeller hub for meas­uring engine thrust and for torque.
Hue. (Colour.) The particular inten­sity of a shade of a colour.
Hull. (Sea plane) (Aero.) That portion of a flying boat which furnishes buoyancy when in the water. It contains accommodations for the crew and passengers; .acts as both float and fuselage in one unit.
Humidity. Relating to moisture, or dampness. The amount of mois­ture in the air. To humidify is to pass ventilating air through a film of water to cleanse and moisten it.
Humus. (Agric.) Partially decom­posed animal or vegetable matter.
Hutch. A small or dark room; a chest; a measure; a place for storing.
Hydrant. A fire plug; a plug or pipe with a valve connected to a water main for service in extinguish-ing fires.
Hydrate. (Chem.) (I) A compound formed by the union of molecules