Coal Miners' Pocketbook: Formerly The Coal and Metal Miners' Pocketbook; Principles, Rules, Formulas and TablesMcGraw-Hill Book Company, Incorporated, 1916 - 1172 páginas |
Dentro del libro
Resultados 1-5 de 100
Página 31
... increased by 1 ) of the given number ( this figure is always situated at the left of the dividing line of the column ) , will be found the P. P. ( proportional part ) for that number . The P. P. thus found is to be added to the mantissa ...
... increased by 1 ) of the given number ( this figure is always situated at the left of the dividing line of the column ) , will be found the P. P. ( proportional part ) for that number . The P. P. thus found is to be added to the mantissa ...
Página 63
... increases to 90 ° at the left , decreases to 0 ° directly opposite the starting point , increases to 90 ° at the right of this point , and decreases to 0 ° at the starting point . The first described set of graduations is numbered ...
... increases to 90 ° at the left , decreases to 0 ° directly opposite the starting point , increases to 90 ° at the right of this point , and decreases to 0 ° at the starting point . The first described set of graduations is numbered ...
Página 77
... increases , it becomes more difficult to make a connec- tion and the chances of accuracy diminish . In the survey of a pitching plane , one station is located , with respect to the adjacent ones , by multiplying the distance by the ...
... increases , it becomes more difficult to make a connec- tion and the chances of accuracy diminish . In the survey of a pitching plane , one station is located , with respect to the adjacent ones , by multiplying the distance by the ...
Página 143
... increasing at the rate of .5 ft . per min .; therefore , as it took 15 min . to go from A to B , the elevation of B over A apparently increased 7.5 ft . Hence , the actual difference in elevation between A and B is not 50 ft . but 50 ...
... increasing at the rate of .5 ft . per min .; therefore , as it took 15 min . to go from A to B , the elevation of B over A apparently increased 7.5 ft . Hence , the actual difference in elevation between A and B is not 50 ft . but 50 ...
Página 168
... increased efficiency gained by using an oil of such quality many times offsets the difference in the cost per gallon and enables them to secure a greater mileage without any increase in their power or other fixed charges . This will ...
... increased efficiency gained by using an oil of such quality many times offsets the difference in the cost per gallon and enables them to secure a greater mileage without any increase in their power or other fixed charges . This will ...
Contenido
1 | |
8 | |
15 | |
34 | |
44 | |
52 | |
58 | |
64 | |
488 | |
495 | |
501 | |
513 | |
523 | |
529 | |
536 | |
546 | |
76 | |
90 | |
99 | |
110 | |
120 | |
137 | |
144 | |
150 | |
156 | |
170 | |
175 | |
182 | |
189 | |
196 | |
205 | |
214 | |
221 | |
226 | |
234 | |
241 | |
253 | |
261 | |
269 | |
275 | |
290 | |
297 | |
303 | |
313 | |
315 | |
327 | |
334 | |
352 | |
365 | |
382 | |
396 | |
406 | |
413 | |
419 | |
433 | |
440 | |
447 | |
458 | |
464 | |
470 | |
476 | |
482 | |
553 | |
560 | |
564 | |
575 | |
603 | |
636 | |
642 | |
651 | |
661 | |
667 | |
675 | |
690 | |
702 | |
721 | |
730 | |
739 | |
745 | |
751 | |
758 | |
773 | |
783 | |
793 | |
800 | |
831 | |
846 | |
874 | |
907 | |
918 | |
925 | |
946 | |
955 | |
964 | |
973 | |
975 | |
985 | |
991 | |
1000 | |
1009 | |
1028 | |
1073 | |
1081 | |
1097 | |
1151 | |
1156 | |
Otras ediciones - Ver todas
Coal Miners' Pocketbook, Formerly the Coal and Metal Miners' Pocketbook ... Thomas J. Foster Sin vista previa disponible - 2012 |
Términos y frases comunes
amount angle anthracite armature average beam bending bituminous coal boiler bottom British thermal units carbon cars cement center of gravity circuit coal coke column combustion compression concrete cubic curve cylinder diameter distance drill driven electromotive force elevation engine entry equal factor of safety feet formula friction frog fuel gauge given grade haulage head heat hoisting rope holes horizontal horsepower Inches iron length lime load lubrication mantissa material mean effective pressure measured method mines mixture moment of inertia mortar motor obtained pillars pipe piston placed plumb-bob Portland cement Pounds pressure pulley pump radius rail resistance sand seam shaft shear sheaves shown in Fig side slope specific gravity square station steam steel strands strength stress surface switch tangent temperature tests thickness timber track usually valve vertical weight wire
Pasajes populares
Página 3 - SQUARE MEASURE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet — 1 square yard (sq.
Página 456 - Z is the space between the piston and the cylinder head (when the piston is at the end of the stroke), toi,-i 8 gether with the volume of the steam ports.
Página 412 - Pi = pressure of steam at discharge, in pounds per square inch; L = length of pipe, in feet; d = diameter of pipe, in inches. In...
Página 204 - This term is applied to the finely pulverized product resulting from the calcination to incipient fusion of an intimate mixture of properly proportioned argillaceous and calcareous materials, and to which no addition greater than 3 per cent has been made subsequent to calcination.
Página 6 - Cubic Measure 1728 cubic inches (cu. in.) =1 cubic foot (cu. ft.) 27 cubic feet = 1 cubic yard (cu. yd.) 128 cubic feet = 1 cord (cd...
Página 34 - Rule. — Divide the logarithm of the number by the index of the root; the result will be the logarithm of the root.
Página 36 - If two triangles have two sides, and the included angle of the one equal to two sides and the included angle of the other, each to each, the two triangles are equal in all respects.
Página 149 - The power multiplied by the distance through which it moves is equal to the weight multiplied by the distance through which it moves. Thus, 20 Ib.
Página 37 - The sum of the interior angles of a polygon is equal to twice as many right angles as the polygon has sides, less four right angles.
Página 303 - The pressure of a liquid on any surface immersed in it is equal to the weight of a column of the liquid whose base is the surface pressed, and whose height is the perpendicular depth of the center of gravity of the surface below the surface of the liquid.