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Read Ebook: Conservation Archaeology of the Richland/Chambers Dam and Reservoir by Moir Randall W Raab L Mark
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Ebook has 413 lines and 39130 words, and 9 pages
To represent cylindrical pieces one within the other; to represent a number of pieces one within the other 78
To represent pieces put together and having slots or keyways through them. 79
Effects of shading or cross-hatching 80
Lines in sectional shading or cross-hatching made to denote the material of which the piece is composed--lead, wood, steel, brass, wrought iron, cast iron 81
Line-shading 82
The shade line to indicate the shape of piece; representation of a washer 83
A key drawn with a shade line; shade line applied to a nut; a German pen regulated to draw lines of various breadths 84
Example of line-shading in perspective drawing, shown in a pipe threading stock and die 85
A cylindrical pin line-shaded; two cylindrical pieces that join each other; a lathe centre; a piece having a curved outline 86
Line-shading applied to a ball or sphere; applied to a pin in a socket shown in section 87
A piece of tube, where the thickness of the tube is shown; where the hollow or hole is seen, the piece shown in section; where the body is bell-mouthed and the hollow curve shown by shading 88
Example of line-shading to denote the relative distances of various surfaces from the eye 89
Line-shading to denote that the piece represented is of wood; shade-lines being regular or irregular 90
MARKING DIMENSIONS.
Examples in marking dimensions 91
THE ARRANGEMENT OF DIFFERENT VIEWS.
The different views of a mechanical drawing; elevation; plan; general view; a figure to represent a solid cylinder 94
To represent the different sides of a cube; the use of a cross to denote a square 95
A triangular piece requires two or three views 96
To represent a ring having hexagon cross section; examples; a rectangular piece in two views 98
The position of the piece when in its place determines the name of the view in the drawing 103
View of a lever 105
Best method of projecting one view from another; the two systems of different views of a piece 106
EXAMPLES IN BOLTS, NUTS AND POLYGONS.
To represent the thread of a small screw 112
A bolt with a hexagon head 113
United States standard sizes for forged or unfinished bolts and nuts 116
The basis of the Franklin Institute or United States standard for bolts and nuts; hexagonal or hexagon heads of bolts 118
Comparison of hexagon and square heads of bolts; chamfers 120
Without chamfer; best plan for view of both square and hexagon heads 123
Drawing different views of hexagon heads 125
To draw a square-headed bolt; to draw the end view of a hexagon head 125
Use of the triangle to divide circles 129
Scales giving the length of the sides of polygons 135
To find what a square body which measures one inch on each side measures across the corners; to find what diameter a cylindrical piece of wood must be turned to which is to be squared, and each side of which square must measure an inch 136
To find a radius across corners of a hexagon or a six sided figure, the length of a side being an inch 138
To draw a stud 142
To pencil in a cap nut; pencilling for a link having the hubs on one side only 145
Link with hubs on both sides; pencil lines for a double eye or a knuckle joint 146
Double eye or knuckle joint with an offset; a connecting rod end 147
A rod end with a round stem 148
A bolt with a square under the head 149
Example in which the corner where the round stem meets the square under the head is sharp; a centre punch giving an example in which the flat sides gradually run out upon a circle, the edges forming curves 150
SCREW THREADS AND SPIRALS.
Screw threads for small bolts with the angles of the thread drawn in, and the method of doing this 152
A double thread; a round top and bottom thread such as the Whitworth thread; a left hand thread; to draw screw threads of a large diameter 156
Drawing the curves for screw threads 157
To draw the United States standard thread 160
To draw a square thread 162
Form of template for drawing the curves of threads 165
To show the thread depth in a top or end view of a nut; to draw a spiral spring 166
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