Leffel's Construction of Mill Dams: And Bookwalter's Millwright and Mechanic |
Other editions - View all
Leffel's Construction of Mill Dams: And Bookwalter's Millwright and Mechanic John Wesley Bookwalter,J. Leffel No preview available - 2018 |
Common terms and phrases
12 inches abutments apron Avoirdupois bank belt beveled bolt brush built burrs centrifugal force Centum CHAPTER circular saw clay cock-head coffer construction crib cts cts cts Cubic Feet cubic foot depth discharge distance down-stream draft circle driven edge embankment engraving equal extending face feet long filling foot foundation furrows give gravel H H H head hole hopper horizontal illustrated inches in diameter inches square inches thick iron laid LEFFEL length lengthwise logs material method mill millstone miner's inch mud-sill multiplied muskrats notch number of revolutions number of teeth perpendicular piles pinned pipe pitch placed planks posts pressure pulley rafters revolutions per minute right angles river rope runner sand shaft shown sills slope solid spiling spindle stone straight edge stream stream-sills surface tier TIMBER DAM timbers tram up-stream side upper velocity wall water wheels weight wheel width wood ΙΟ
Popular passages
Page 158 - 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...
Page 246 - The areas of circles are to each other as the squares of their diameters, or of their radii.
Page 158 - To find the diameter of a pump cylinder to move a given quantity of water per minute (100 feet of piston being the standard of speed), divide the number of gallons by 4, then extract the square root, and the product will be the diameter in inches of the pump cylinder. To find quantity of water elevated in one minute running at 100 feet of piston speed per minute.
Page 182 - Multiply the diameter of the driver by number of its revolutions, and divide the product by the diameter of the driven, the quotient will be the number of revolutions of the driven.
Page 182 - Rule. — Multiply the diameter of the driver by its number of revolutions, and divide the product by the number of revolutions of the driven; the quotient will be its diameter.
Page 234 - America, running for a thousand miles between two ridges of the Andes, falls only five hundred feet in all that distance. Above the commencement of the thousand miles, it is seen descending in rapids and cataracts from the mountains. The gigantic Rio de la Plata has so gentle a descent to the ocean, that in Paraguay, fifteen hundred miles from its mouth, large ships...
Page 183 - To ascertain the size of the driver. RULE : Multiply the diameter of the driven by the number of revolutions you wish to make and divide the product by the revolutions of the driver; the quotient will be the size of the driver. The above rules are practically correct.
Page 159 - Piston multiplied by the steam pressure gives the total amount of pressure that can be exerted. The area of the water piston multiplied by the pressure of water per square inch gives the resistance.
Page 250 - ... which causes their angular velocity of revolution to bear a fixed ratio to the velocity of the prime mover. The rods of the pendulums place themselves at an angle with the vertical axis, so that the common height of the pendulums is that corresponding to the number of turns in a second.
Page 242 - Measures of Weight The standard AVOIRDUPOIS POUND is the weight of 27.7015 cubic inches of distilled water weighed in air at 39.83° F., with the barometer at 30 inches.