The century dictionary and cyclopedia, a work of universal reference in all departments of knowledge with a new atlas of the world . inal inventor, Thomas Blanchard of !Massa-chusette (17SS-1S64), who patented it in 1819, and subse-quently, with others, adnpted it to a gi-eat variety of uses.— Button-lathe, a kind of chuck-lathe used in manufac-turing buttons.—Car-Wheel lathe, a double lathe forturning olf the rims uf lucumotive driving-wheels or car-wheels. It is so arranged that two wheels titted on oneaxle may be turned together, or, when desiralde, twowheels may be turned independently, as
The century dictionary and cyclopedia, a work of universal reference in all departments of knowledge with a new atlas of the world . inal inventor, Thomas Blanchard of !Massa-chusette (17SS-1S64), who patented it in 1819, and subse-quently, with others, adnpted it to a gi-eat variety of uses.— Button-lathe, a kind of chuck-lathe used in manufac-turing buttons.—Car-Wheel lathe, a double lathe forturning olf the rims uf lucumotive driving-wheels or car-wheels. It is so arranged that two wheels titted on oneaxle may be turned together, or, when desiralde, twowheels may be turned independently, as each face-platecan be driven separately.—Compound lathe, a lathe forturning or engraving geometric forms; a geometric latheor rose-engine.— Copying lathe, a form of lathe adaptedfor turning articles fruni a pattern on the principle of theBlanchard lathe. —Cutting-off lathe, a lathe for cut-ting rods, bars, and pijics to length. The object to be cutis passed throuph a collet at the rear end of the spindle,a concentric chuck holding it in lathe,a lathe with two or more cutting-tools, so distributed lathe. Duplex , tool in front; b, inverted tool at back ; c, bed and standard;d, d, two compound slide-rests; e, a rieht-and-left screw for movingthe two slide-rests simultaneously to ami from the center of the lathe. about the work as to balance the transverse pressure andavoid springing it.— Eccentric lathe, a lathe having acompound face-plate or sliding frame, and guides whichpresent the object in such a way that the tool works an uvalupon it.—Gap-bed lathe, a lathe having an opening inits bed to admit of turning objects of larger radius thanwould be possible with a continuous bed. Also called gap-lathe, break-lathe.— Geometrical lathe, an instrunientused by bank-note engravers, watch-cuse manufacturers,etc., to make complicated pattenis of flue lines. It foi-msthe stars, rosettes, ornamental borders, etc., on plates forbank-notes, designed as a
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Keywords: ., bookcentury1800, booksubjectatlases, booksubjectenglishlanguage
