The Coal Miner's Handbook: A Handy Reference Book for Coal Miners, Pit Bosses, Fire Bosses, Foremen, Superintendents, Managers, Engineers, and All Persons Interested in the Subject of Coal MiningInternaional Textbook Company, 1913 - 320 σελίδες |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 21.
Σελίδα 25
... of the piston , and the number of strokes ) are multi- plied together , and the result is divided by 33,000 . Hence , the rule might be expressed as follows : Horsepower = X mean effective pressure ( in pounds per MATHEMATICS 25.
... of the piston , and the number of strokes ) are multi- plied together , and the result is divided by 33,000 . Hence , the rule might be expressed as follows : Horsepower = X mean effective pressure ( in pounds per MATHEMATICS 25.
Σελίδα 53
... divided by the number of sides . 20. The square described on the hypotenuse of a right- angled triangle is equal to the sum of the squares described on the other two sides . Thus , in a right - angled triangle whose base is 20 ft . and ...
... divided by the number of sides . 20. The square described on the hypotenuse of a right- angled triangle is equal to the sum of the squares described on the other two sides . Thus , in a right - angled triangle whose base is 20 ft . and ...
Σελίδα 58
... divided into 360 equal parts , called degrees ; each degree is divided into 60 equal parts called minutes . E D FIG . 1 B A quadrant is one - fourth the circum- ference of a circle , or 90 ° . The complement of an arc is 90 ° minus the ...
... divided into 360 equal parts , called degrees ; each degree is divided into 60 equal parts called minutes . E D FIG . 1 B A quadrant is one - fourth the circum- ference of a circle , or 90 ° . The complement of an arc is 90 ° minus the ...
Σελίδα 76
... divided into surface work , or ordinary sur- veying , and underground work , or mine surveying . With slight modifications , the instruments employed in both are the same . The compass used may be either a pocket compass , or a ...
... divided into surface work , or ordinary sur- veying , and underground work , or mine surveying . With slight modifications , the instruments employed in both are the same . The compass used may be either a pocket compass , or a ...
Σελίδα 77
... divided that 30 spaces on it equal in length 29 on the limb of the instrument . It is read practically the same as a compass vernier , except that on the transit the vernier is made with all of the 30 divisions on one side of the 0 mark ...
... divided that 30 spaces on it equal in length 29 on the limb of the instrument . It is read practically the same as a compass vernier , except that on the transit the vernier is made with all of the 30 divisions on one side of the 0 mark ...
Άλλες εκδόσεις - Προβολή όλων
The Coal Miner's Handbook International Correspondence Schools Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
The Coal Miner's Handbook International Correspondence Schools Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Συχνά εμφανιζόμενοι όροι και φράσεις
air-current airway alternating current anthracite battery Bearing Degrees brattice breast calculated carbon carbon monoxide cars cartridge chute circuit circular mils Coal Mining Course column Complete Coal Mining cosine cubic cylinder decimal diameter difference distance driven drum electric engine English English enrolled equal explosive face factor of safety feet firedamp formula friction gangway gauge given haulage head hoisting hole horsepower inclined inclined plane iron lamps length load logarithm longwall manway material mean effective pressure measure method miner motor multiplied pillar pipe pitch placed pounds pump rail resistance right angles roof rooms rope salary seam shaft sheave shown in Fig side sine slope specific gravity spiles split square inch station steam strands surface temperature thick timber triangle usually varies velocity ventilation vernier vertical water gauge weight wire
Δημοφιλή αποσπάσματα
Σελίδα 2 - 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...
Σελίδα 3 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints = 1 quart (qt.) 4 quarts = 1 gallon (gal.) 31| gallons = 1 barrel (bbl.) 2 barrels...
Σελίδα 320 - On the restoration of life, a teaspoonful of warm water should be given; and then, if the power of swallowing has returned, small quantities of wine, warm brandy and water, or coffee, should be administered. The patient should be kept in bed and a disposition to sleep encouraged.
Σελίδα 319 - Repeat these measures alternately, deliberately, and perseveringly, about fifteen times in a minute, until a spontaneous effort to respire is perceived ; immediately upon which cease to imitate the movements of breathing, and proceed to induce circulation and warmth.
Σελίδα 4 - 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 hectometer (Hm.) 10 hectometers 1 kilometer (Km.) 10 kilometers 1 myriameter (Mm.) 1181.
Σελίδα 53 - The square described on the hypotenuse of a rightangled triangle is equal to the sum of the squares described on the sides containing the right angle. Prop. 30. — If the square on one side of a triangle is equal to the sum of the squares on the other two sides, the angle contained by these two sides is a right angle.
Σελίδα 319 - Silvester's method, as follows : — Place the patient on the back on a flat surface, inclined a little upwards from the feet ; raise and support the head and shoulders on a small firm cushion or folded article of dress placed under the shoulder-blades.
Σελίδα 1 - Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30j square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq.
Σελίδα 53 - The circumferences of circles are to each other as their radii, and their areas are to each other as the squares of their radii.
Σελίδα 52 - If two triangles have two angles and the included side of the one, equal to two angles and the included side of the other, each to each, the two triangles will be equal.