Self-Help Mechan
Self-Help Mechanical Drawing: An Educational Treatise
作者：Hawkins, N. (Nehemiah), 1833-1928
体例：题 章数：140
字数：240,915 来源：Project Gutenberg
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cache/epub/67166/pg67166.txt（Project Gutenberg）
章节目录
共 140 题- Transcriber’s Notes
- SELF-HELP
- MECHANICAL DRAWING
- AN EDUCATIONAL TREATISE
- INTRODUCTION, 1-24
- CHALK WORK, 25-38
- PRELIMINARY TERMS AND DEFINITIONS, 39-52
- FREEHAND DRAWING, 53-78
- GEOMETRICAL DRAWING, 79-100
- DRAWING MATERIALS AND INSTRUMENTS, 101-134
- MECHANICAL DRAWING, 135-188
- PENCILING, 139-147
- PROJECTION, 148-164
- INKING IN DRAWINGS, 167-170
- LETTERING DRAWINGS, 171-175
- DIMENSIONING DRAWINGS, 176-179
- SHADING DRAWINGS, 180-181
- SECTION LINING AND COLORS, 182-185
- REPRODUCING DRAWINGS, 186-188
- DRAWING OFFICE RULES, 189-195
- GEARING, 197-208
- DESIGNING GEARS, 209-216
- WORKING DRAWINGS, 219-227
- READING WORKING DRAWINGS, 228-230
- PATENT OFFICE RULES FOR DRAWINGS, 231-236
- USEFUL HINTS AND “POINTS,” 237-244
- LINEAR PERSPECTIVE, 245-265
- PERSONAL, BY THE EDITOR, 281
- USEFUL TABLES, 269-280
- REFERENCE INDEX, 283
- PREPARATORY PRACTICE IN DRAWING.
- PERPENDICULAR LINES.
- HORIZONTAL LINES.
- OBLIQUE LINES.
- BROKEN LINES.
- CURVED LINES.
- POSITION.
- HOW TO CUT A PENCIL.
- HOW TO DRAW STRAIGHT LINES.
- TO DRAW THE FIRST OBLIQUE LINE.
- TO DRAW THE UPRIGHT OR PERPENDICULAR LINE.
- TO DRAW THE SECOND OBLIQUE LINE.
- Wrist lines.]
- ON FIGURES FORMED OF STRAIGHT LINES.
- ON CURVED LINES.
- EXAMPLES FOR PRACTICE.
- Let it be granted--
- GEOMETRICAL AXIOMS.
- 1. _Things which are equal to the same thing are equal to each other._
- 2. _When equals are added to equals the wholes are equal._
- 3. _When equals are taken from equals the remainders are equal._
- 4. _When equals are added to unequals the wholes are unequal._
- 5. _When equals are taken from unequals the remainders are unequal._
- 8. _The whole is greater than any of its parts._
- 9. _Every whole is equal to all its parts taken together._
- 11. _All right angles are equal to one another._
- 12. _A straight line is the shortest distance between two points._
- 13. _Two straight lines cannot enclose a space._
- EX. 16.--_To construct a square rectangle on a given straight line._
- DEFINITIONS.
- 1. The _Complement_ of an arc is 90° minus the arc.
- 2. The _Supplement_ of an arc is 180° minus the arc.
- 8. The _Cosecant_ of an arc is the secant of the complement.
- 30 and 60 degree triangle, 9 inches.
- 1 Scroll.
- THE DRAWING BOARD.
- THE TEE-SQUARE.
- ADJUSTABLE BLADED SQUARE.
- TRIANGLES, OR SET-SQUARES.
- PARALLEL RULE.
- SECTION LINER.
- IRREGULAR CURVE OR SCROLL.
- ELLIPSES.
- DRAWING PENCILS.
- DIVIDERS AND COMPASSES.
- PROPORTIONAL DIVIDERS.
- COMPASSES.
- SPRING BOWS.
- BEAM COMPASSES AND TRAMMELS.
- DRAWING SCALES.
- DRAWING-PENS.
- DRAWING PAPER.
- POINTS TO BE OBSERVED IN SKETCHING.
- 2. Learn to be accurate before being rapid.
- SECTION LINING]
- Fig. 251.]
- Fig. 252.]
- Fig. 253.]
- Fig. 254.]
- Fig. 255.]
- Fig. 256.]
- Fig. 257.]
- Fig. 258.]
- TINTS AND COLORS.
- BLUE PRINTING.
- TEST-PIECES.
- BLACK PROCESS COPYING.
- Drawing Office Rules.[1]
- SIZE OF DRAWINGS.
- CHARACTER OF DRAWINGS.
- DRAWING SYMBOLS.
- 15. Detail shop drawings should state:
- STANDARDS.
- NUMBERING OF DRAWINGS.
- CHECKING.
- PATTERNS.
- SKETCH BOOKS.
- IN GENERAL.
- NUMBERING WORKING DRAWINGS.
- BUMPING POST FOR RAILWAY TRACKS.
- Scale, 3 in. = 1 ft.]
- U. S. PATENT OFFICE RULES.
- AS APPLIED TO PREPARATION OF DRAWINGS.
- ENGLISH PRACTICE.
- 1. That we see by the agency of light.
- 2. That light passes from objects to our eyes.
- 3. That light travels in straight lines, which are called Visual Rays.
- AND
- INDEX]
- TABLE OF DECIMAL EQUIVALENTS.
- TABLE OF DECIMAL EQUIVALENTS
- RULES RELATIVE TO THE CIRCLE.
- TO FIND CIRCUMFERENCE--
- TO FIND DIAMETER--
- TO FIND RADIUS--
- TO FIND SIDE OF AN INSCRIBED SQUARE--
- TO FIND SIDE OF AN EQUAL SQUARE--
- SQUARE--
- TO FIND THE AREA OF A CIRCLE--
- ROMAN TABLE.
- SOLID MEASURE, OR CUBIC MEASURE.
- TABLE.
- CIRCULAR MEASURE.
- LONG MEASURE--MEASURES OF LENGTH.
- UNITED STATES STANDARD SIZES OF WROUGHT IRON WELDED PIPE.
- STANDARDS FOR WIRE GAUGES IN USE IN THE UNITED STATES.
- UNITED STATES STANDARD SIZES OF BOLTS.
- UNITED STATES STANDARD SCREW THREAD GAUGE.
- PAGE
- Transcriber’s Notes