Mechanical Drawing: Prepared for the Use of the Students of the Massachusetts Institute of ...
Mechanical Drawing: Prepared for the Use of the Students of the Massachusetts Institute of ...
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In our eReader you can find the full English version of the book. Read Mechanical Drawing: Prepared for the Use of the Students of the Massachusetts Institute of ... Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Mechanical Drawing: Prepared for the Use of the Students of the Massachusetts Institute of ...
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To quickly assess the difficulty of the text, read a short excerpt:
85 To draw the involute of a circle.
Divide the circumference into any nnra- /" ber of equal parts, as at A, B, C, D, etc., and draw radii to these points. At A, B, C, D, etc. draw tangents. Let the curve start at A. On the tangent at B lay ofif a distance from B to 1 equal to one of the parts into which the circumference is di- vided. On the tangent at C lay off a distance equal to two parts to 2. On the tangent at D three parts to 3 ; from E four parts to 4, etc. The curve through these point...s, 1, 2, 3, 4, etc., is the involute of the circle.
GEOMETRICAL PROBLEMS.
41 Prob. 86. To draw a spiral c&mposed of semicircles^ the radii being in arithmetical progression.
Draw an indefinite line, BAG. On the line take any two points, A and B, as centres.
With A as a centre and radius AB draw a semicircle. With B as a centre and radius BC draw a semicircle, and so on, using A and B as centres, and taking the radii to the end of the diameter of the last-drawn semicircle.
Prob. 87. To draw a spiral composed of semicircles, whose radii shall he in geometrical progression.
What to read after Mechanical Drawing: Prepared for the Use of the Students of the Massachusetts Institute of ...?
You can find similar books in the "Read Also" column, or choose other free books by Linus Faunce to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
85 To draw the involute of a circle.
Divide the circumference into any nnra- /" ber of equal parts, as at A, B, C, D, etc., and draw radii to these points. At A, B, C, D, etc. draw tangents. Let the curve start at A. On the tangent at B lay ofif a distance from B to 1 equal to one of the parts into which the circumference is di- vided. On the tangent at C lay off a distance equal to two parts to 2. On the tangent at D three parts to 3 ; from E four parts to 4, etc. The curve through these point...s, 1, 2, 3, 4, etc., is the involute of the circle.
GEOMETRICAL PROBLEMS.
41 Prob. 86. To draw a spiral c&mposed of semicircles^ the radii being in arithmetical progression.
Draw an indefinite line, BAG. On the line take any two points, A and B, as centres.
With A as a centre and radius AB draw a semicircle. With B as a centre and radius BC draw a semicircle, and so on, using A and B as centres, and taking the radii to the end of the diameter of the last-drawn semicircle.
Prob. 87. To draw a spiral composed of semicircles, whose radii shall he in geometrical progression.
What to read after Mechanical Drawing: Prepared for the Use of the Students of the Massachusetts Institute of ...?
You can find similar books in the "Read Also" column, or choose other free books by Linus Faunce to read onlineMoreLess
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