Shop MathematicsTaylor-Holden, 1910 - 219 σελίδες |
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Σελίδα 54
... approximation to find the H. P. absorbed by friction in heavy shaft bearings : H. P. = WxfXNXX d 33,000 × 12 The above formula becomes H. P. WXfxNxdx.000008 . = W = load on bearing in pounds . d = dia . of shaft in inches . N = R ...
... approximation to find the H. P. absorbed by friction in heavy shaft bearings : H. P. = WxfXNXX d 33,000 × 12 The above formula becomes H. P. WXfxNxdx.000008 . = W = load on bearing in pounds . d = dia . of shaft in inches . N = R ...
Σελίδα 64
... approximate formula for width of belt for a given H. P. may be taken as close enough for practical use for single belts . b = H.P.X 50,000 dxWxN by transposing d = b = width of belt in inches , d = diameter of pulley in inches , = H. P. ...
... approximate formula for width of belt for a given H. P. may be taken as close enough for practical use for single belts . b = H.P.X 50,000 dxWxN by transposing d = b = width of belt in inches , d = diameter of pulley in inches , = H. P. ...
Σελίδα 65
... approximate length of belt required ? 5. What is the exact length of a cross belt running over two pulleys 60 in . and 24 in . diameters , when the shafts are 16 ft . between centers ? 6 . How many H. P. can be transmitted by a 3 in ...
... approximate length of belt required ? 5. What is the exact length of a cross belt running over two pulleys 60 in . and 24 in . diameters , when the shafts are 16 ft . between centers ? 6 . How many H. P. can be transmitted by a 3 in ...
Σελίδα 80
... approximate formula in finding weight of shaft . Page 172 . 17. What length of bearing will be required for a 37 % in . dia . shaft , carrying 6 pulleys for 3 in . belts at 55 lbs . per in . strain and weighing 35 lbs . each , allowable ...
... approximate formula in finding weight of shaft . Page 172 . 17. What length of bearing will be required for a 37 % in . dia . shaft , carrying 6 pulleys for 3 in . belts at 55 lbs . per in . strain and weighing 35 lbs . each , allowable ...
Σελίδα 104
... approximate , but from experience with the carbon steels which are used most in the toolmaking department for the finishing cuts , the following speeds have been found practical as a basis for trial : Soft brass 80 F. P. M. Gray iron ...
... approximate , but from experience with the carbon steels which are used most in the toolmaking department for the finishing cuts , the following speeds have been found practical as a basis for trial : Soft brass 80 F. P. M. Gray iron ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
24 teeth amperes angle back gears balls cast iron change gears circular pitch circumference compound gearing cone pulley Cosecants Cosines countershaft cutter cylinder depth of cut diameter disc divisions double belt drill drive pulley driving spindle engine Example factor of safety feet Find the H. P. Find the indexing fly wheel force formula friction ft.-lbs fulcrum heating surface helical gear horse power inclined plane index head index plate indexing required lathe center lathe spindle lead screw length lever line shaft main line measure mesh milling cutter milling machine minute motion move multiplied number of teeth piston pounds pressure problem pull pump required to run rope screw thread sheave single belt slide Solution speed spiral gears sprocket square inch steam steel strain stroke stud gear thimble thread screw tooth transmit TRIGONOMETRICAL FUNCTIONS tubes turn valve velocity ratio windlass
Δημοφιλή αποσπάσματα
Σελίδα 171 - OF TIME. 60 Seconds = 1 Minute 60 Minutes = 1 Hour 24 Hours = 1 Day 7 Days = 1 Week 28 Days = 1 Lunar Month...
Σελίδα 174 - OF CAPACITY 10 milliliters (ml.) = 1 centiliter (cl.) 10 centiliters = 1 deciliter (dl.) 10 deciliters = 1 liter (1.) 10 liters = 1 dekaliter (Dl.) 10 dekaliters = 1 hektoliter (hi.) 10 hektoliters = 1 kiloliter (kl.) MEASURES OF WEIGHT 10 milligrams (mg.) = 1 centigram (eg.) 10 centigrams = 1 decigram (dg.) 10 decigrams = 1 gram (g.) 10 grams = 1 dekagram (Dg.) 10 dekagrams = 1 hektogram (hg.) 10 hektograms = 1 kilogram (kg.) 18.
Σελίδα 169 - Square Measure. 144 square inches 1 square foot, 9 square feet 1 square yard, 30J square yards 1 square rod, 40 square rods 1 rood, 4 roods 1 acre.
Σελίδα 173 - Measures of Length 10 millimeters (mm.) = 1 centimeter (cm.) 10 centimeters = 1 decimeter (dm.) 10 decimeters = 1 meter (m.) 10 meters = 1 dekameter (Dm.) 10 dekameters = 1 hektometer (Hm.) 10 hektometers = 1 kilometer (Km.) 10 kilometers = 1 myriameter (Mm.) Measures of Surface 100 sq.
Σελίδα 170 - Liquid Measure. — 4 gills = 1 pint; 2 pints = 1 quart; 4 quarts = 1 gallon; 31| gallons = 1 barrel; 2 barrels = 1 hogshead.
Σελίδα 171 - NUMBERS. 12 units = 1 dozen. 12 dozen — 1 gross. 12 gross = 1 great gross. 20 units = 1 score. PAPER. 24 sheets = 1 quire. 20 quires = 1 ream. 2 reams = 1 bundle. 5 bundles = 1 bale.
Σελίδα 170 - Measure 1,728 cubic inches = 1 cubic foot 27 cubic feet = 1 cubic yard 128 cubic feet = 1 cord (A cord of wood = 4...
Σελίδα 171 - MONEY. 10 mills = 1 cent. 10 cents = 1 dime. 10 dimes = 1 dollar. 10 dollars = 1 eagle.
Σελίδα 182 - That is, the exponent of a letter in the quotient is equal to its exponent in the dividend minus its exponent in the divisor. am For example, — = a"-*, a
Σελίδα 173 - Such an electromotive force as would cause a current of one ampere to flow through a resistance of one ohm.