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The Expositor, 1869-06-25, Page 98 'mat©heSoreWs i The screws in a `watchnumbs„ eforty!" four, ,or more :than. on -e --quarter .of all its pieces. 'The Screw _ and: Steel Depart- ment is one of the largest in the: factory. its magical little antomats, rain by nim- ble -fingered girls, convert shining steel wire into jnftnutestims screws. bare down'their Beads, and eat slate in them for ' microscopic screwdrivers. They are polished toperfect smoothness, and then, like every other part of, the watch brought to "spring temper -the tem- vord blade—b heating, em of rich, deep blur.. �n shows the screws of p.erlef the s which leaves t The illustrati their tactual s'ze, and also oi,e magnl- lieu 1/00 time `each way, or 10,000 -ticnef the actual size. 1 'H re are machines which .-will cut cre s with five -hundred th'•bads to the rich ; the fineot used in the watch -lave two -hundred and fifty. Even these threads are.invisible to the naked] oye, and it takes. one hundredand forty- four thousand of the screws to weigh a pound, A pound of_them is worth six -- pounds of pure gold. Lay one upon a piece : iece of white paper, and it looks like tiniest steel -filling. . Only by placing it under a strong; magnifier cry we detect its threads and see that it; is shining as a mirror, and as true and p ifect as the iwhee duvingl of a locomotiv' . a Screws for the - best - co pensatioh- , balan>e are of -- A ten dollar piece -will furnish material for six hundred of them. The compensation -balance comes from the Punching Room . of steel as large and heavy penny, and enclosed in a ri I.t is ground down, worke polished till it becomes a slender wheel -the outer rim .is -brass, the inner rim and cross bar steel ---lighter and thinner, than; a finger ring. s. Through :the. double rim twenty-two holes are drilled fthr the screws. A` v chuck whirls the- ;feel around—as one would spin a penny n;P on the table'—four thousand l eight hundred trines a minute, while a laid makes each hole by '.anplying three tiny drills one after the other. He vrill._bore one . hundred wheels per day,. cr apply a diiill oftener than once in six !seconds Froin morning till night- tj slay nothing of the time cons'uined in fastening on and taking; off the wheels and sharpening the drills. Screws of gold or brass are put in, and -the balance is ,completed. On this little partailone nearly eighty operations have been per- foruied.—A. D. • RIOaARD$ox, ui Har - per's Magazine for July. , .A Romance ` An -English paper, the Newcastle Chronicle, has the following In the course of last 'Week the col- liery village of Thornely, near Durham, was thrown into a Stata.of excitement, the" cause of which will be gathered facan tile sequel. About �! twel ve years age a pitman was desirous of Pushing his fortune in another prod. and hear 7r , of the marvelous auriferous discove- r, r:c;