Straight needle to Strength of current
Straight needle. (Uphol.) A large double-pointed needle from 6 to 20 in. long, used to sew webbing to springs, stuffing to burlap, etc.
Straight-peen ham mer. (Shopwk.) One end of the head is wedgeshaped, with rounded edge. This peening edge is parallel with the handle.
Straight-shank drill. (Shopwk.) A drill with a round, parallel shank, used in self-centering chucks. These drills are not usually made in large sizes.
Straight-shank milling cutter. (Mach.) Used in a profiling ma
chine for die work, routing, etc.
Strain. (Engin.) To stretch beyond its proper limit. To act upon so as to cause change of form or volume.
Strake. (Metalwk) In heavy metal plate construction, a continuous row of plates.
Stranded wires. (Elec.) Wires or cables made up of a number of small wires braided or twisted together; differing from flexible wire in that it has fewer strands than flexible wire.
Strap work. (Furn.) (1) Decorative design consisting of n~rrow fillet or band with crossed, folded, or interlaced ornament. (2) An ornamental railing of wood or metal along the edge of a table, desk, or sideboard.
Strata. Plural of stratum. Layers either artificial or natural.
Stratosphere. That portion of the earth's atmosphere which begins at an'altitude of about seven miles and extends upward indefinitely.
Straw board. (Papermkg.) A grade of board made entirely of cooked straw pulp. It is sometimes made as a combination board with liners of superior material.
Stray capacitance. Any capacitance in a circuit or device due to interconnection, electrodes or the proximity of elements in the circuit in addition to the internal capacitance provided.
Streaking. (Paint alld Lacquer) In spray coats of paint or lacquer, light and dark streaks are caused by failure to lap wet edges of the spray, or by using a spray nozzle that is out of line or adjustment.
Stream feeders. (Print.) An automatic method of feeding sheets to presses or folding machines.
Streamline. (Aero.) The path of a small portion of a fluid relative to a solid body with respect to which the fluid is moving. The term is commonly used only for such flows as are not eddying.
Streamline flow. (Aero.) A fluid flow in which the streamlines, except those very near a body and in a narrow wake, do not change with time.
Streamline form. (Ado., Auto.) The form of a body so shaped that the flow about it tends to be a streamline flow.
Strength of current. (Elec.) The number of amperes flowing through a circuit. It may be likened to the flow of gallons per minute in a water pipe.Strength of material of Stub gear tooth
Strength of material. (Engin. ) The science that treats of the effects of forces in causing changes in the size and shape of bodies.
Stress. (Engin.) An internal force which resists change in the shape
or size of a body. .
Stress accelerated corrosion. (Metal.) With an increase in stress, the corrosion of metal is acceler
ated. It is greater in steel than in.
some of the alloys.
Stretch. (Tel.) To slow up action. Stretcher. Brick or stone lying length wise in a course.
Stria. (Plast.) Surface or internal threadlike flaws in homogeneity of transparent plastic.
Striking off. (Fdry.) Levelling of the surface of a foundry mold with a bar of wood or metal.
String course or sailing course.(Arch.) It consists of a course of brick or stone, projecting from a wall horizontally, for decorative purposes, or to break the plainness of a large expanse of wall.
Stringer. (Arch.) A heavy plank or timber generally in horizontal
, positin in a structure. (Carp.) On stairs, members running at about 45°, supporting the treads and risers. (Furn.) A strecher or rail.
String milling. (Mach.) A milling operation. in which a number of parts to be machined are mounted in a straight line so the same cut will be taken on each in turn.
Strip. (Mach.) To break, tear, or strip off the threads of a bolt or nut. (Bldg.) A long narrow piece of wood.
Stripe. (Paint.) A long narrow painted line, usually for decoration as on an automobile body.
Stripper. (Mach.) A device used on presses to prevent the punched metal from lifting with the punch.
Stripping-plate machine. (Fdry.) A very easily operated molding machine on which a pattern in stripped through a plate.
Stroke. (Auto. and Engin.) The motion of a piston accomplished by the "throw" of the crankshaft.
Strong sand. (Fdry.) New sand, or sand which has not lost its good qualities by being used too often.
Struc:turalload. (Engin.) The load due to the structure itself as distinguished from the imposed load.
Structural steel. (Engin.) The various shapes used by engineers in the erection of bridges, buildings, etc., as I beams, H beams, Z bars, channels, etc
Strut. (Aero., Engin.) A compression member of a truss frame; e.g., the vertical members of the wing truss of a biplane (interplane struts) and the short vertical horizontal members separating the longeron in the fuselage.
Strut girder. A lattice girder whose top and bottom members are connected by vertical struts and braced by diagonal braces or by counterbracing.
Strut tenon. (Woodwkg.) A tenon, such as is used on a diagonal piece or strut, usually on heavy timbers.
Stub gear tooth. (Mach.) A type of
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