Questions and Answers from the American Machinist |
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Questions and Answers from the American Machinist (Classic Reprint) Frank Richards No preview available - 2017 |
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50 pounds acid angle atmosphere belt boiler brass brazing cast iron cent circumference clearance coal color compression compressor computing condenser cool copper crank pin cubic feet cubic foot cut-off cutter cylinder degrees depth difference distance divide drawing drill driving engine equal feet per minute formula friction gear give hardening heat hight hole horse-power inches diameter increase lathe lead screw length line shaft machine mean effective pressure melted metal mold multiply number of teeth number of threads phosphor bronze piece pipe piston pitch circle plate pounds gage pounds per square practice pulley pump Q.-Please Q.-What radius result revolutions per minute rubber rule shaft shellac side speed square inch steam pressure steel stroke surface surface condenser tank taper temper temperature tensile strength threads per inch tool tube turn usually valve velocity weight wheel zinc
Popular passages
Page 344 - Find also the area of the triangle, formed by the chord of the segment and the two radii of the sector.
Page 399 - Every body continues in a state of rest, or of uniform motion in a straight line, except in so far as it may be compelled by impressed forces to change that state.
Page 357 - The ribs or plates for iron ships are immersed in a cleansing bath of equal parts of sulphuric or muriatic acid and water, used warm ; the works are then hammered, and scrubbed with emery or sand. to detach the scales and to thoroughly clean them ; they are then immersed in a preparing bath...
Page 165 - Sir," said I, after puzzling a long time over "more requiring more and less requiring less" — "will you tell me why I sometimes multiply the second and third terms together and divide by the first — and at other times multiply the first and second and divide by the third?" "Why, because more requires more sometimes, and sometimes it requires less — to be sure. Haven't you read the rule, my boy?" " Yes, sir, I can repeat the rule, but I don't understand it.
Page 202 - Rub the surface of the metal with rotten stone and sweet oil, then rub off with a piece of cotton flannel, and polish with soft leather. A solution of oxalic acid rubbed over tarnished brass soon removes the tarnish, rendering the metal bright. The acid must be washed off with water, and the brass rubbed with whiting and soft leather. A mixture of muriatic acid and alum dissolved in water imparts a golden color to brass articles that are steeped in it for a few seconds.
Page 23 - Multiply one-sixth of the lowest tensile strength found stamped on any plate in the cylindrical shell by the thickness — expressed in inches or parts of an inch — of the thinnest plate in the same cylindrical shell, and divide by the radius or half diameter — also expressed in inches...
Page 232 - The circular pitch is the distance from the center of one tooth to the center of the next tooth, measured along the pitch circle.
Page 344 - So IS THE AREA OF THE CIRCLE, TO THE AREA OF THE SECTOR.
Page 377 - ... or appears like the white of eggs. Apply it warm. Buff the grain off the leather where it is to be cemented, rub the joint surfaces solidly together, let it dry a few hours and it is ready for practical use, and if properly put together it will not need riveting, as the cement is nearly of the same nature as the leather itself.
Page 32 - ... in contact with the plates, and thereby producing overheating, which may lead to an explosion. Foaming may also be caused by forcing the fire, or by taking the steam from a point over the furnace or where the ebullition is violent; the greasy and dirty state of new boilers is another good cause for foaming. Kerosene should be used at first in small quantities, the effect carefully noted, and the quantity increased if necessary for obtaining the desired results.