Coal Miners' Pocketbook: Formerly The Coal and Metal Miners' Pocketbook; Principles, Rules, Formulas and Tables

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McGraw-Hill Book Company, Incorporated, 1916 - 1172 páginas

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Contenido

Leveling Description of Instruments 73 Level Adjustments 73
76
Underground or Mine Surveying Introduction 83 Flat Work
90
Determination of Meridian Latitude and Longitude 99 Celestial Sphe
99
Railroad Surveying Definitions of Circular Curves 109 Geometry of C
113
MECHANICS
149
Center of Gravity Definitions 155 Of Solids
156
Belting Sag of Belts 273 Speed 273 Horsepower 273 Allow
165
Different Purposes Thurston
169
ing of Beams 176 Formulas for Maximum Shear and Bendin
179
Practical Problems in the Strength of Beams and Props 184
187
Cement Testing Field Inspection and Sampling 195 Sampling
196
Cement Specifications Specifications for Portland Cement 204
205
Elements of Steel Reinforcement Principles of Construction 214
218
Concrete Structures Tank Tower of Reinforced Concrete 223 Rein
226
MASONRY
234
Hoisting Ropes Round Ropes 239 NonSpinning Ropes 240 Flattened
241
WireRope Calculations Working Load 251 Proper Working Load 253
253
WireRope Tramways Single Tramways 260 Double
261
Transmission by Hemp Rope General 268 Horsepower of Manila
269
SPECIFIC GRAVITY WEIGHT AND OTHER PROPERTIES
275
Average Weight of Various Substances Weight of 1 Cu Ft of
281
Properties of Coal Specific Gravity of American Coals 286 Weights
290
Wire and SheatMetal Gauges Table 291 Standard Decimal Gauge 2
297
HYDROSTATICS
303
Gauging Water Miners Inch 309 Duty of Miners Inch Table 30
313
WaterPower Theoretical Efficiency 331 Horsepower of a Running
332
HEAT AND FUELS
352
Fuels in General 365
365
Coal Constituents 368 Changes in Chemical Composition from Wood
372
Petroleum as Fuel Composition of Crude Petroleum 395 Flash Point
396
BOILERS
406
Boiler Piping Principal Considerations 412 Materials for Pipes 412
413
Stoker
419
Boiler Trials Purposes 430 Observations During Trial 430 Weighing
433
Boiler Inspection Nature of Inspection 439 External Inspection 440
440
Chimneys Products of Combustion 446 Weight of Air Water Vapor
447
Principles and Requirements Clearance 454 CutOff 455 Ratio of
458
Pounding of Engines Faulty Bearings 463 Pounding in Cylinders 464
464
Rules for Stationary Engineers 473
473
Losses in the Transmission of Compressed Air Cause of Loss 478 Loss
483
Electric Wiring Conductors Materials 488 Properties of Annealed Cop
491
Current Estimates Incandescent Lamps 494 Arc Lamps 495 Motors
495
Dynamos and Motors DirectCurrent Dynamos 497 Factors Determin
501
Tunnels Through Loose Ground 569 Forepoling 569 Wedging 51
575
Shafts Introduction 578 Form of Shaft 578 Compartments 578
596
Slope and Shaft Bottoms Slope Bottoms 596 Vertical Curves 599
603
PillarandStall Systems of Mining General 634 Connellsville Region
636
Mining and Blasting Coal Shooting Off the Solid 638 Precautions
642
Drawing Pillars General 648 Work of Drawing 650 Delayed Pillar Drawing 651 Precautions
651
lar Longwall 656 Longwall Working in Pitching Seams 657
661
Classification of Explosives Low 667 High 667 Sizes of Grains
667
Care of Explosives Storing 673 Thawing Dynamite 673 Handling
675
General Considerations Affecting Blasting Definitions 687 Effect of Free
690
Flushing of Culm 702705
702
Framing Timbers Limiting Angle of Resistance 720 Placing Timber Sets
721
Steel and Masonry Supports Iron and Steel Props 730 Cylindrical Cast
730
HOISTING
739
Balanced Hoisting Gencral 744 TailRope Balancing 745 Conical Drums
745
Calculations for FirstMotion Hoisting Engines General Considerations
751
Calculations for SecondMotion Hoisting Engines Standard Sizes
758
Animal Haulage Selection of Stock 775 Feeding Mules 775 Care 776
776
SelfActing Inclines Tracks Switches Etc 779 Rollers 779 Ropes
783
TailRope Haulage General_Arrangement 792 Engines Drums Etc
793
CompressedAir Haulage General 798 Simple or SingleStage Locomo
800
VENTILATION OF MINES
831
Temperature and Pressure 841 Weight and Volume of Air
842
Safety and Other Lamps Principle and Origin 874 Description 874
874
Explosive Conditions in Mines Causes 900 Derangement of Ventilating
907
Distribution of Air in Mine Ventilation General 917 Requirements
918
Methods and Appliances in the Ventilation of Mines Ascensional Ventila
925
Spontaneous Combustion Causes 948 Coal Storage
949
Screens 953 Revolving Screen Mesh for Anthracite 953 Hydraulic
955
Handling of Material Anthracite Coal 962 Weights and Capacities
964
Rules for FirstAid Corps 969 Shock 970 Burns and Scalds 970 Heat
973
Safety First Systematic Timbering 975 Adequate Supervision 975
975
MineRescue Work Organization 984 First Steps 984 Reversing
985
Tables of Natural Sines and Cosines 991999
991
Tables of Natural Tangents and Cotangents 10001008
1000
LOGARITHMIC TABLES
1009
Tables of Logarithms of Trigonometric Functions 10281072
1028
TRAVERSE TABLES
1073
Tables of Squares Cubes Square and Cube Roots Circumferences
1081
Tables of Circumferences and Areas of Circles From 164 to 100 10971101
1097
Index 11511172
1151
ElectricLocomotive Haulage General Considerations 815 Advantages
1156
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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.

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