Farm Engines and how to Run Them: The Young Engineer's Guide ...F. J. Drake & Company, 1903 - 215 стор. |
Інші видання - Показати все
Загальні терміни та фрази
adjusted back pressure belt blow carbon cause check valve clean close coal cold compound engine condenser cool crank pin cross-head crown sheet cylinder engine draft drain cock eccentric economy exhaust steam expansive explosion fire firebox flywheel force friction clutch fuel fusible plug gasoline engine gauge cock gear globe valve governor grain grate surface grease heater heating surface holes horsepower inch injector iron keep leak locomotive loose lubricated machine metal molecules oxygen pass pipe piston rod plate port pounds prevent pulley pump return flue boiler reverse lever safety valve screw shaft shoes side sieve smoke spark spark arrester speed square stacker steam cylinder steam engine steam gauge steam pressure steel stick stop straw stroke stuffing box stuffing-box supply tank threshing throttle tight TRACTION ENGINE tube turn type of boiler usually water gauge wear wood
Популярні уривки
Сторінка 187 - To find the pressure in pounds per square inch of a column of water, multiply the height of the column in feet by .434. Approximately, we say that every foot elevation is equal to % Ib. pressure per square inch ; this allows for ordinary friction. To find the diameter of a pump cylinder...
Сторінка 187 - To find the diameter of a circle multiply circumference by .31831. To find circumference of a circle multiply diameter by 3.1416. To find area of a circle multiply square of diameter by .7854. To find surface of a ball multiply square of diameter by 3.1416. To find side of an equal square multiply diameter by .8862.
Сторінка 181 - It is an invisible vapor generated from water by the application of heat. Q. What are the properties which make it so valuable to us? A. (1) The ease with which we can condense it. (2) Its great expansive power. (3) The small space it occupies when condensed. Q. Why do you condense the steam? A. To form a vacuum and so destroy the back pressure that would otherwise be on the piston, and thus get more useful work out of the steam. Q. What is vacuum? A. A space void of air.
Сторінка 176 - Let the steam outlets remain as they are. 3. In Case of Foaming. — Close throttle, and keep closed long enough to show true level of water. If that level is sufficiently high, feeding and blowing will usually suffice to correct the evil. In case of violent foaming, caused by dirty water, or change from salt to fresh or vice versa, in addition to the action above stated, check draft and cover fires with fresh coal.
Сторінка 187 - To find capacity of tanks any size ; given dimensions of a cylinder in inches, to find its capacity in US gallons : Square the diameter, multiply by the length and by .0034. To ascertain heating surface in tubular boilers, multiply two-thirds...
Сторінка 187 - J\ gallons, 1728 cubic inches, and weighs 62^ pounds. To find the pressure in pounds per square inch of a column of water multiply the height of the column in feet by .434. Steam rising from water at its boiling point (212...
Сторінка 187 - ... the pipe. Given the dimensions of a cylinder in inches, to find its capacity in US gallons: Square the diameter, multiply by the length and by .0034. If d ~ diameter, I = length, gallons = d