Footstep or footstep bearing to Forging press
Footstep or footstep bearing. (Mach.) A bearing used at the lower end of a vertical shaft or spindle to carry the end thrust.
Foot switch. (Auto Elec.) An electric switch. operated by foot pressure; e.g., the switch attached to the floor boards of an automobile, by which the headlight beams are controlled. See. Foot selector switch.
Force. (Mc..l;h. and Phys.) That which changes, or tends to change the station of rest or motion of the body acted upon. It is measured in pounds. Force has three characteristics: direction, place of application, and magnitude,
Force feed lubricators. (Auto. Mech. and Mach.) A plunger system similar in action to a tire pump. The plungers are actuated by a earn-shaft and as they move up and down, a metered charge of oil is delivered to the parts to be lubricated.
Force feed of oil. (Auto. Mech.) Force feed is a lubrication system in which a pump forces oil to main bearings, rod bearings, and piston-pin bearings. When supplied to all three it is called a full force-feed system.
Force fit. (Mach.) A fit accomplished by force with the result that the parts so joined become a unit.
Force plate. (Plast.) The plate that
carries the plunger or force plug of a mold and the guide pins or bushings. It is sometimes called the steam plate.
Force plug. (Plast.) The portion of a mold that enters the cavity block and exerts pressure on the molding compound, designated as the top force or bottom force by position in the assembly; also called plunger or pisoton.
Force pump. (Mach.) A pump in which the water is lifted by the force due to atmospheric pressure acting against a vacuum.
Foreign matter. (Plast.) Particles of susbtance incorporated in a plastic mateiral which seem different from its average composition.
Foreman. A man in charge of a group of workmen. He is usually responsible to a superintendent or manager.
Fore plane. (Woodwkg.) A plane intermediate in size between a jackand a jointer plane.
Fore-shortened. (Fine Arts) Shortened or represented as shortened, as the effect of perspective.
Forge. (I) To forma piece of metal by hammering while it is hot. (2)
the structure wholly of iron or of iron and brick upon which a smith's fire is built. Forges may be either fixed or portable.
Forge welding. A gr{)up of pressure welding processes wherein the parts to be welded are brought to suitable temperature in a furnace and the weld in consummated by pressure or blows.
Forging brass. (Metal.) An alloy of copper and zinc with small amounts of tin and lead. It is much used in die forging.
Forging press. (Mach.) A machine used to exert the pressure needed in the die forging.
Forgings to Foundation
Forgings. Pieces or massess of metal shaped by hammering.
Forked center. (Mach.) A center with taper or straight shank and V-head for holding cylindrical objects in position during drilling and other operations.
Form. (Cerarn.) Any container in which plaster is poured over a pattern to make a mold. (Concrete) The retainer which gives required shape to the poured concrete and is removed after the concrete has set. (Print.) A complete arrangement of type locked in a chase ready for printing.
Formaldehyde. (Chern.) (HCHO) A colorless, poisonous gas obtained by passing the vapors of methyl alcohol through a heated copper tube. It is very soluble in water. In the liquid form it is known as formalin. One ofthe best disinfecting agents known. Used also in dyestuffs, rub
.ber goods, inks, tanning, etc.
Format. (Bookbndg.) The form, size, type face, margins, and general style of a book when printed and bound.
Formed plate. (Elec.) The plate in a special type of storage cell which is formed by a process of charging and discharging.
Forming process. (Elec.) As applied
to plates of storage batteries; the process of developing a storage battery or cell from plates of lead immersed in sulphuric acid and water through charging and discharging until the plates are chemically Pb02 and Pb.
Forming rolls. (Sheet-Met. Wk.) A series of three rolls adjustable for various gauges of sheet metal. Used for turning or forming cylinders of desired diameter.
Forming tools. Tools with their working or cutting edges shaped' like the form to be produced on the work.
Form truck. (Prillt.)A two-wheeled truck used for rolling heavy forms from place to place.
Formula. (Math.) An arithmetical or algebraical statement of figures, letters, signs, and symbols, arranged to indicate the mathematical operations necessary for the solution of a problem. .
Formulations. (Plast.) This term ref~rs to variations within a plastic type, one formulation being rigid, another fire-resistant.
Form-wound coil. (Elec.) An armature coil or winding which is formed or shaped over a wooden fixture. The c-oil is then placed on the armature 'as a whole.
Forstner bit. A' wood bit for boring sinkings in which a center point hole is not wanted.
Forwarding. (Print.) The binding process after the sheets of a book are fastened together.
Fouling. The incrustation of steam boilers, and steam and water pipes with scale. The interference of achines and structural parts generally with each other, hindering their action.
Foundation. (Arch.) That part of a building or wall which is below the surface of the ground,.or that
|
