=Acute Angle=, def. 42
=Acute-Angled Triangle=, def. 50
=Addendum Circle=, illus. 200
=Alphabets=, Gothic, desc. 171
=Altitude=, def. 41
=Altitude of a Polygon=, def. 47
=American Machinist=, Quotation from 141
=Angle=, def. 41, 83
To bisect an 89
To draw an 89
=Angle-Iron=, illus. 75
=Angle-Plate=, illus. 75
=Angular Perspective Drawing=, illus. 260, 265
=Apex=, def. 42
=Apex of an Angle=, def. 42
=Arc=, def. 42
Complement of an 99
Cosecant of an 99
Cotangent of an 99
Sine of an 99
Supplement of an 99
Tangent of an 99
Versed Sine of an 99
=Arc of Circle=, To find the center of an 90
=Arcs=, Drawing 146
Illus. 146
=Arrow-Heads=, how made 172, 176
=Axiom=, def. 83
=Axis=, Conjugate, def. 96
Of a Figure, def. 43
Of a Solid, def. 42
Transverse, def. 96
=Backlash in Gearing= 215
=Backward Projection= desc. 152, illus. 152-3
=Base=, def. 43
Of a Polygon, def. 47
=Beacon Light=, illus. 282
=Beam Compasses= desc. 124, illus. 124
=Bending Machine=, Hydraulic desc. 221, illus. 220-1
=Benjamin, Prof. Chas.=, “How and What to Study” 23
=Bevel-Gear=, desc. 201
=Bevel Mortise Wheel=, desc. 203
=Bevel Wheel= desc. 199, illus. 203
=Bisect=, def. 43
=Bisector=, def. 43
=Blackboard=, illus. and desc. 27
=Blackboard Drawing= 28
=Blue Printing= desc. 186, illus. 187
Test pieces 188
=Blue Prints=, Office rules for 196
=Black Process Copying= 188
=Boiler-Plate=, Riveted, illus. 76
=Bolt=, Square-head, illus. 76
=Bolt and Nut=, Square-head desc. 144, illus. 145
Hexagon desc. 144, illus. 76, 144
=Bow-Dividers= desc. 123, illus. 122
=Bow-Pencil=, desc. 123
=Bows=, Use of 242
=Brick=, Section Lining, illus. 182
=Broken Lines=, How to Draw 33
Def. 46
=Bumping Post=, illus. 226
=Calipers=, illus. vi
=Cast-Iron=, Section-Lining, illus. 182
=Caulking Tool=, illus. 76
=Center Line=, def. 46
=Center Lines=, In Drawings 240-1
In Shop Drawings 192
=Chalk-Crayon= desc. 27, illus. 27, 37
=Chalk-Work= 27
Instruments for Drawing, illus. 29
=Channel-Iron=, illus. 75
=Checking Drawings= 194
=Circle=, def. 43
To describe about a square 93
about a triangle 93
through two points 90
through three points 90
To find the center 90
To inscribe in a square 94
in a triangle 94
=Circles=, Drawing desc. 146, illus. 146
=Circumference of a Circle= 43
=Circumscribe=, def. 43
=Circular Pitch Line=, illus. 200
=Classifying Drawings=, Office Rules for 191
=Clearance in Wheel Teeth= 215
=Cog-Wheel= def. 201, illus. 201
Section Lining, illus. 183
=Coin=, Perspective View of a, illus. 248
=Color and Tints= 185
=Compass=, Mariners’, illus. 268
=Compasses=, Beam, desc. and illus. 124
Desc. and illus. 121
For holding chalk, illus. 29
How to hold, illus. 136
=Complement of an Arc= 99
=Composition=, Section-Lining, illus. 182
=Concave=, def. 44
=Cone=, def. 44
=Conjugate Axis=, def. 96
=Construction=, def. 44
Line, def. 46
=Contents=, Table of 24
=Contour=, def. 44
=Convergence=, def. 44
=Convex=, def. 44
=Copying Drawings=, Black Process 188
Blue Printing 186
Tracing 184
=Copyright= viii
=Corner=, def. 44
=Corollary=, def. 83
=Co-secant of an Arc=, def. 99
=Co-sine of an Arc=, def. 99
=Co-tangent of an Arc=, def. 99
=Crane=, desc. 219
Working drawing of, illus. 218
=Cross-Hatches=, def. 44
=Cross-hatching Drawings= 182
=Crown Wheel=, illus. 208
=Curve=, def. 44
=Curved Line=, def. 46
=Curved Lines=, Drawing, desc. 69
Drawing Figures of 70, 72, 73
How to Draw 35
Illus. 70
=Curved Surface=, def. 49
=Curve or Scroll=, illus. 117
=Cut Gears=, desc. 215
=Cylinder=, def. 44
=Cylindrical=, def. 44
=Cylindrical Projection=, illus. 161
=Dash Line=, def. 46
=Decimal Equivalents=, Table of 269
=Dedication= ix
=Definitions=, Preliminary 41
=Degree=, def. 41, 44
=Describe=, def. 44
=Design=, def. 44
Symmetry in, def. 50
=Designing Gears= 209
=Detail Drawings=, Office Rules for 191
=Develop=, def. 45
=Diagonal=, def. 45
=Diagonals of a Polygon=, def. 47
=Diameter=, def. 45
=Diameter=, Of a Circle 43
=Diameters of Wheels=, How to Measure 199
=Diametral Pitch=, desc. 200
Of Gears 212
=Dimensioning Drawings= desc. 176, illus. 177, 179
=Dimension Line=, def. 46
=Dimensions on Drawings=, Office Rules for 192
=Dividers and Compasses=, desc. 119
=Dividers=, illus. 82, 119
Bisecting, desc. 119
Bow, illus. 122
“Point” 242
Proportional desc. 119, illus. 120
Spring Bow, desc. 124
=Dodecahedron=, def. 48
=Dot-and-Dash Line=, def. 46
=Dotted Line=, def. 46
=Draughtsmen=, Useful Tables for 269-280
=Drawing=, Blackboard 28
Free hand 55
Linear Perspective 247
Parallel Perspective 260-1
Projection, desc. 148
Scale Perspective 257
Spur Gear, illus. 163, 211
Spur Wheel, desc. 162
Straight Line Figures desc. 65, illus. 66-7-8
Symbols 193
The Pitch Line 209
To Scale, desc. 126
Working, def. 51
=Drawing-Board= desc. 107, illus. 102, 106, 108
Expansion and Contraction of 108
How to Construct 107
Trestles, illus. 110, 111
=Drawing Instruments=, desc. 103
How to Select 104
Illus. 105
Outfit Recommended 104
=Drawing Materials=, desc. 103
=Drawing Office Rules= 191
=Drawing Paper=, desc. 132
Erasing Lines 140
Fixing of, illus. 102
Fixing on the Board 139
Pasting 184
“Points” 243
Patent Office Sizes 234
Sizes of 133
=Drawing Pencils=, desc. and illus. 118
How to Use 56
=Drawing Pen=, Filling with ink, illus. 130
=Drawing Pens=, desc. and illus. 129
=Drawing-Pins=, desc. 110
=Drawing Scales=, desc. 126
=Drawings=, Cleaning, desc. 169
Color and Finish, note 185
Dimensioning, desc. 176
Inking in, desc. 167
Lettering, desc. 171
Patent Office Rules for 233
Reproducing 186
Section-Lining, desc. 182
Shading desc. 180, illus. 180, 225
Size of, Office Rules 191
Tint and Color, desc. 184
=Drawing-Table=, desc. 111
Folding Legs, illus. 104
=Edge=, def. 45
=Elevation=, def. 45
=Elevation and Section=, Spur Wheel desc. 216, illus. 212
=Ellipse, An=, desc. 96, 118
To describe when length and breadth are given 96
=Envelopes=, Portfolio, desc. 142
=Equiangular Triangle=, def. 45
=Equilateral Triangle=, def. 50
=Erasing=, “Points” on 242
=Eye=, illus. and desc. 253
Effect of Light on 253
=Face=, def. 45
=Faced Surfaces=, Points, etc. 242
=Figures=, Drawing Straight-line 65
Numerals, examples of 173
Straight-line, illus. 66
=File Handle=, desc. and illus. 144
=Finger and Thumb Lines=, illus. 64
=Finished Surfaces=, How to indicate 193
“Points” 242
=Finishing=, def. 45
=Flanged-tooth Wheel=, desc. 205
=Flat Pattern=, def. 47
=Foreshortening=, def. 45
=Forward Projection= desc. 151, 152, illus. 155
=Free-hand=, def. 45
=Free-hand Drawing= 55, 78
First Lesson in 30
Penciling, illus. 54
=Free-hand Illustration=, a Water Wheel 78
=Friction-Clutch and Pulley=, desc. 224
=Friction Gear-Wheels=, desc. 201
=Full Line=, def. 46
=Gear=, def. 199
=Gearing=, desc. 199
Drawing desc. 162, illus. 163
=Gearing and Design= 197
=Gears=, A Train of, desc. 208
Speed of 208
=Gear-Wheels=, Spur, illus. 198
=Generated=, def. 45
=Geometric=, def. 45
=Geometrical Axioms= 84
=Geometrical Drawing=, desc. 81
Problems in 86
=Geometrical Signs= 84
=Geometry=, defs. 249
Elements of 81
=Gothic Letters=, illus. 173
=Grooved Friction Wheels=, desc. 201
=Ground-Plane= def. 249, 255, illus. 249
=Half-Tint=, def. 45
=Hand-Wheel=, illus. 77
=Hanger=, illus. 179
=Helical Wheel= desc. 199, illus. 207
=Hemisphere=, def. 45
=Heptagon=, def. 47
=Hexagon=, def. 47
To Construct a 95
=Hexagon-Head Bolt=, illus. 144
=Hexahedron=, def. 48
=Horizontal=, def. 45, 250
=Horizontal Line=, in Drawing, illus. 250
How to Draw 32
In Perspective 252
=Hypothesis=, def. 83
=Icosahedron=, def. 48
=India Ink=, desc. and illus. 131
Dish or Tile, illus. 131
=India Rubber Eraser=, illus. 132
Use of 240
=Ink=, Preparing, for Drawings, desc. 167
Test for Good, desc. 167
=Ink Eraser=, Steel, desc. and illus. 132
=Inking=, illus. 166, 169
Long Lines, illus. 170
Rules of Procedure 168
Short Work, illus. 169
“=Inking in=” Drawings, desc. 167
“Points,” etc. 239, 243
Patent Office Drawings 234
=Inscribe=, def. 45
=Instrumental=, def. 45
=Instruments= for Chalk-work, illus. 29
=Internal Gear=, desc. 201
=Internal-Gear Wheel=, illus. 207
=Introduction= 15
=Isosceles Triangle=, def. 50
=Lantern-Wheel=, desc. 201
=Lathe-Dog=, illus. 76
=Lemma=, def. 83
=Lettering=, Blow-Off Valve, illus. 175
Drawings, desc. 171
=Light=, and Sense of Seeing 254
Experiment with, illus. 255
Laws of 252
=Line=, def. 82
To Divide into Equal Parts 89
=Linear Perspective Drawing= 247
=Lines=, def. 45
Note 65
Parallel, def. 83
=Link Motion=, Stephenson’s, illus. 225
=Longitudinal=, def. 46
=Lucas, Theo.=, Acknowledgement 23, 266
=Marking Measurements= on Drawings 243
=Mechanical Drawing= 137, 247
Elevation 138
Examples 143
Procedure 141
=Minerva=, Free-hand Sketch of iii
=Miter-Wheel= desc. 199, 204, illus. 204
=Model=, def. 46
=Nonagon=, def. 47
=Numbering= Drawings, Office Rules for 194-5
=Numerals=, illus. 173
=Oblique=, def. 46
=Oblique Lines= How to Draw, 32, 58, illus. 59, 63
=Oblong=, def. 46
=Obtuse Angle=, def. 42
=Obtuse-Angled Triangle=, def. 50
=Octahedron=, def. 48
=Octagon=, def. 47
To Describe on a given straight line 95
To Inscribe in a circle 96
=Oil Can=, illus. 77
=Optic Nerve=, illus. 253
=Optics=, in Drawing, def. 252
=Outline Picture=, desc. 152
=Oval=, def. 46
How to Draw an 71
=Overall=, def. 46
=Paper=, Fastening Drawing on 184
Rule or Scale 242
Sensitized, desc. 188
The Right Side of 241
=Parallel=, def. 46
=Parallel Lines=, def. 83, 252
To Draw 88
In Perspective 251
=Parallel Perspective Drawing=, illus. 260 to 263
=Parallel Rule= desc. 115, illus. 114-5
=Parallelogram=, def. 47
To Construct 93
=Pasting Drawing Paper=, “Points” 243
=Patent Office Drawings= 235, illus. 236
Rules of Great Britain 236
Rules of U. S. 233
=Patterns=, def. 46
Numbering, from drawings 194
=Pedestal=, illus. 178-9
=Pen=, Hand holding, illus. 166, 169, 170
=Pencil=, Function of a 142
How to Cut, illus. 57
How to Hold, illus. 54, 59, 60
How to Use 56
=Pencil-Compasses=, desc. 143
How to Hold 143
=Penciling=, desc. and illus. 139
“Points” 143, 240
=Pencil Lines=, How to Make 119
=Pencils=, Sharpening Points of 143, 241
=Penknife=, illus. 52
=Pens=, Drawing, illus. 129
Lettering and Figuring, illus. 172
=Pentagon=, def. 47
To Inscribe in a circle 94
=Perimeter=, def. 47
Of a Polygon, def. 47
=Periphery of a Wheel=, def. 200
=Perpendicular=, def. 47, 252
=Perpendicular Lines=, How to Draw 31, 61, 62
=Perrott, Geo.=, Acknowledgement 23, 266
=Personal=, Note from the Author 266
=Perspective Drawing= def. 47, illus. 250
Definitions of Terms used in 249
Geometrical Terms used in 248
Of a Bridge, illus. 249
Scale or Approximate 257
Vanishing Point, illus. 251
Water Reflection, illus. 246
=Perspective=, Linear, def. 247
=Perspective Plane=, def. 250
=Picture Plane=, desc. 255
In Drawing, illus. 249, 250
In Perspective, illus. 258
=Pinion-Wheel=, desc. 201
=Piston Rod=, desc. 223
=Pitch Circle= in Gearing 200
=Pitch Line=, Drawing the 209
In Gearing 200
=Plan=, def. 47
=Plan of the Work= 21
=Plane=, in Perspective, def. 249
=Plane of the Picture=, def. 250
=Plane Surface=, def. 49
=Point=, def. 82
=Point of Sight=, in Perspective Drawing 251
=Points=, relating to Chalk Drawings 36
To be observed in Sketching 141-2
Useful Hints and 170, 239
=Polygon=, def. 47
=Polyhedron=, def. 48
=Postulate=, def. 83
=Pounce=, How to Use, desc. 170, 186
=Preface= 13
=Preparatory Practice= in Drawing 30
=Prism=, def. 49
=Problems=, def. 83
Geometrical 86
=Produce=, def. 49
=Profile=, def. 49
=Projection=, Backward, illus. 153-4
Def. 49
Cylindrical Outline, desc. 159
Cylindrical Surface, illus. 161
Forward desc. 152, illus. 155
Hexagon Nut, illus. 160
Marking Dimensions 150
Lines of Sight 150
Scaling and Measuring in 149
Sight-Lines, illus. 151
Sloping Surface, desc. 159
Spur-Wheel, desc. 162
=Projection Drawing=, desc. 148
Illus. 149, 151, 153, 154, 155, 157, 158, 160, 161, 163
Principles of 148
Spur-Wheel, illus. 163, 212
=Proportional Dividers=, illus. 120
=Proportions= of Teeth of Wheels 210
=Proposition=, def. 83
=Protractor=, desc. 128
=Pulley and Friction Clutch=, illus. 224
=Punching Press= illus. 222, desc. 223
=Quadrant=, def. 49
=Quadrilateral=, def. 47
=Quadrisect=, def. 49
=Rack and Pinion=, desc. 205
=Radius of a Circle= 43
=Reading Working Drawings=, desc. 229
=Rectangle=, def. 48
To Construct a 92
=Reproducing Drawings=, desc. 186
=Reverse Curve=, def. 44
=Rhomboid=, def. 48
=Rhombus=, def. 48
=Right-Angle=, def. 42
Triangle, def. 50
=Robinson, A. W., M. E.=, note, Office Rules 191
=Rolling-Circle= in Gear-Wheel 200
=Rule=, Area of a Circle, To find the 271
Circumference of a Circle, To find the 271
Cylinder, To find the contents of a 271
Diameter of a Circle, To find the 271
Illus. 82
Inscribed Square, To find side of an 271
Parallelogram, To find the area of a 271
Pyramid or Cone, To find the contents of a 271
Radius of a circle, To find the 271
Sphere, To find the contents of a 271
Square, To find the side of an equal 271
Trapezoid, To find the area of a 271
Triangle, To find the area of a 271
Two-foot desc. 127, 128, illus. 128
Wedge, To find the contents of a 271
=Rules= for Drawing Office 191
Wheels, To find proportions of 209
=Sand Paper=, Removing surface of paper 168
=Scale=, Drawing to, desc. 126
=Scale Drawings=, To read 230
=Scale=, Flat, illus. 127
Triangular, illus. 127
=Scalene Triangle=, def. 50
=Scale or Approximate Perspective= 257
=Scale Rule=, for Proportions of Teeth 214
=Scales=, Drawing, desc. 126
=Scholium=, def. 83
=Screw-Thread=, U. S. Standard Gauge 280
=Scroll or Curve=, desc. 117
Universal Curve, illus. 134
=Secant of an Arc= 99
=Section=, def. 49
Drawing illus. 163, desc. 160
=Sectional=, def. 49
=Section-Liner=, illus. 116
=Section Lines= in Drawings 240
=Section-Lining=, Cast-iron, etc., illus. 182
Cog-Wheel, illus. 183
=Section-Lining Drawings= desc. 182, illus. 183
Wheel Hub, illus. 184
=Selecting Drawing Instruments= 103, 240
=Semi-Circle=, def. 43
=Sensitized Paper=, desc. 188
=Set-Square=, illus. 102, 114
=Shading Curves=, illus. 181
=Shading Drawings= 180
=Shadow=, def. 49
=Shadow Line=, def. 46
=Shadow Lines=, “Points” 241
=Sharpening Pencils= 57
=Shop Drawings=, Office Rules 192
=Sight=, Point of, in Perspective Drawing 252
Sense of 254
=Sight Lines= in Projection, illus. 157
=Sine= of an Arc 99
=Skew-Gearing=, desc. 203
=Sketch Books=, desc. 142
Office Practice 194
=Sketches=, details 142
=Sketch=, Free-hand, Advantage of 55
=Sketching= desc. 141, note 17
Points to be observed in 141-2
=Sloping Surface= in Projection desc. 159, illus. 166
=Solid=, def. 49, 83
=Solid Pattern=, def. 47
=Speed of Gears= 208
=Sphere=, def. 49
=Spiral Curve=, def. 44
=Spring Bows= illus. 122, 123, desc. 124
=Spur-Gear= desc. 201, illus. 211
=Spur Mortise-Wheel=, illus. 202
=Spur-Wheel=, desc. 199, 216
How to Draw 209
Illus. 198
Projection desc. 162, illus. 163
Teeth of cast-iron, desc. 202
=Square=, def. 48
To Convert into an Octagon 95
To Describe about a Circle 94
To Inscribe in a Circle 93
=Standards=, for U. S. 278
Office Rules for 193
=Steady Rest=, Scale, illus. 228
=Straight Line=, def. 46
To Draw a Perpendicular to a 86
Drawing Figures of 66-7-8
How to Draw a 57, 59
To Bisect a 86
=Steel=, Section-Lining, illus. 182
=Steel Gears=, Economy of 216
=Surface=, def. 49, 82
=Symbols=, representing Materials 193
=Table= of Areas of Circles 273-277
Bolts, Standard Sizes of 280
Circular Measure 272
Circumferences of Circles 273-277
Contents 24
Decimal Equivalents 269
Diameters of Circles 273-277
Land Measure 272
Metric Equivalents 270
Pipe, Standard Sizes of Welded 279
Roman Figures 272
Solid Measure 272
Wire Gauges 278
Useful for Draughtsmen 266-280
=Tangent= of an Arc, def. 99
To Draw a, to a Circle 91
=Tee-Iron=, illus. 75
=Tee-Square=, Adjustable, desc. and illus. 113
Desc. 112
How to Use, illus. 111, 147
Illus. 102, 112
Points about 242
=Teeth in Bevel Gears=, desc. 204
=Terms and Definitions=, Preliminary 41
=Test-Pieces=, Use of, in Blue Prints 188
=Tetrahedron=, def. 48
=Theorem=, def. 83
=Thumb-Tack= illus. 109, desc. 110
=Tints and Colors=, desc. 184
=Title and Date=, on Sketches 142
=Title, Date, Scale, etc.=, Office Rules for 192
=Title Page= vii
=Tracing-Cloth=, desc. 186
=Tracings=, Office Rules for Keeping 195
Tinted and Shaded, desc. 184
=Trammels=, desc. and illus. 125
=Trapezium=, def. 48
=Trapezoid=, def. 48
=Trestles=, Drawing-Board, desc. and illus. 110
=Triangle=, def. 50
To Describe a Circle about a 93
=Triangle, or Set-Square=, desc. and illus. 114
How to Use desc. 147, illus. 166
=Triangles=, illus. 102
To Construct 92
=Trigonometry=, principles and def. 98
=Trisect=, def. 50
=Trundle Wheel= desc. 201, illus. 208
=Two-foot Rule=, illus. 128
=U. S. Standards=, Pipes 279
=Upright Lines=, How to Draw 61
=Useful Tables for Draughtsmen= 269-280
=Valve=, Blow-off desc. 174, illus. 175
=Valve Gear=, or Link Motion, illus. 225
=Vanishing Point=, def. and illus. 251
In Drawing, illus. 250
In Perspective Drawing 252
=Varnish=, Shellac, for Drawings 241
=Versed Sine= of an Arc 99
=Vertex=, def. 51
Of an Angle, def. 42
=Vertical=, def. 51, 251
=Vertical Lines=, in Perspective 257
=Vertical-Plane=, def. 249
=View=, def. 51
=Visual Ray= in Perspective Drawing 256
=Visual Rays of Light= desc. 252, illus. 255
=Vulcanite=, Section-Lining, illus. 182
=Water Reflection= in Perspective Drawing, illus. 246
=Wheel=, Bevel, A, illus. 203
Crown, illus. 208
Helical, A, illus. 207
Hub, Section-Lining, illus. 184
Internal Gear, desc. 201, 207
Miter, A, illus. 204
Proportions of the Teeth of a 210
Spur illus. 198, desc. 199, 201
Worm, desc. 201
=Wood=, Section-Lining, illus. 182
=Working Drawing=, Bending Machine 220-1
Def. 51
Illus. 218, 220, 221, 222, 223, 224, 225, 226, 228
Bumping Post, illus. 226
Points, etc. 243
Power Punching Press 222
Numbering a, Office Rules for 195
To Read a 229
=Working Drawings=, desc. 219, 227
=Worm-Gear=, desc. 206
=Worm-Wheel= desc. 201, illus. 206
Speed of a 216
=Wrench=, illus. 75
=Wrist-Lines=, illus. 64
=Wrought-Iron=, Section-Lining, illus. 182