The Form of Teeth in a Pinion chiving a Trundle Wheel
System composed of an Internal Spur-Wheel driving a
System composed of an Internal Wheel driven by a Pinion 61
Projections of a Spur-Wheel and Pinion in Gear . . 62
Delineation of Bevil-Gearing.63
Illustrations of Bevil-Gearing ..... .64
Projections of a Bevil-Wheel.64
Projections of a Bevil-Wheel and Pinion in Gear . . 65
Oblique Projection of a Bevil Pinion .... 66
Section- IV.—Drawing of the Steam-Engine—
Details of a Steam-Engine Beam.66
Details of a Steam-Engine Connecting-Rod and Crank . 67
Illustrations of the conversion of Reciprocating into Rota-
Details of Watt’s Parallel Motion ..... 70
Description of the Parallel Motion .... 70
Skeleton Diagram of the Parallel Motion ... 71
Oblique Projection of an Oscillating Steam Cylinder . 72
Skeleton Drawing of a Stationary Steam-Engine . . 73
Skeleton Drawing of a Goods Locomotive .... 73
Selection of Working Detail Drawings of a Goods Locomotive 73
High-Pressure Engine of Six Horse-Power . . 74
Section V.—Hand Sketching and Drawing from the Object—
To determine the Shadow cast by a Cylinder upon a Hexa-
gonal Prism, the Axes of the two Solids coinciding .
To define the Shadows cast upon the Interior of a Hollow
Cylinder in Section by itself and by a Circular Piston
fitted into it ........
To find the Outline of the Shadow cast into the Interior of
a Hollow Hemisphere ......
To find the Line of Shade in a Sphere, and the Outline of
its Shadow cast upon the Horizontal Plane
To draw the Line of Shade on the Surface of a Ring of Cir-
cular Section, in Elevation, Plan, and Circular Section
Of the Shadows cast upon the Surfaces of Grooved Pulleys
To trace the Outlines of the Shadows cast upon the Sur-
faces of Screws and Nuts, both Triangular and Square-
MANIPULATION OF SHADING AND SHADOWS.
Section I.—Methods of Tinting—
Surfaces in the Light.
Surfaces in the Shade.
Shading by Flat Tints.
Shading by Softened Tints.
Working Sketches of a Pillar Drill.75
Section II.—Elaboration of Shading and Shadows
Section III.—Finished Colouring ....
DRAWING OF WORKSHOPS.
Workshops of the Oxford, Worcester, and Wolverhamp-
ton Railway, at Worcester ..... 77
PROJECTION OP SHADOWS.
Introduction—Shadows and Cast Shadows ... 78
To determine the Shadow cast upon a Vertical Wall by a
Straight Line, &c..79
To find the Shadow cast by a Straight Line upon a Curved
To find the Shadow cast upon a Vertical Plane by a given
Circle parallel to it.80
To find the Outline of the Shadow cast upon both Planes of
Projection by a regular Hexagonal Pyramid . . 81
To determine the Limit of Shade in a Cylinder placed ver-
tically, &c. ........ 81
To find the Line of Shade in a Cone and its Shadow cast
upon two Planes of Projection.81
Elementary Illustrations . . . • .
Perspective Planes ........
Point of View, Station Point, &c.
To Draw a Square in Perspective.
To Draw a Cube in Perspective.
The Principles of Perspective applied in the Solution of
To Draw the Perspective of Pavements of Squares .
To Draw the Perspective of a Circle ....
Perspective of Solids—Tetrahedrons—Cubes—Cylinders
To Draw a Sphere in Perspective.
Practical Example of Perspective Drawing applied to Ma-
chinery . . .
Section II.—Isometric Projection.
Isometric Projections of a Cube .....
Method of Constructing Isometric Scales ....
Application of Isometrical Drawing to Simple Combinations
of the Cube and Parallelopipedon ....
Application of Isometric Projection to Curved Lines