Machine drawing; a text and problem book for technical students and draftsmen (1921)
Svensen, Carl L. (Carl Lars), 1884- · New York, D. Van Nostrand company · leaf 103
formula. L = .131 (Di + D2) + VX2 -f- (Di - 1)2)2. For crossed belts as at II, the formula is: L = .131(Z)i + 2)2) + VX2 + (£>i + D^Y;L = length of belt in feet,X = distance between centers in feet,Di = diameter large pulley in inches,D2 = diameter small pulley in inches. 92 MACHINE DRAWING 131.… … Fig. 172. Cone Pulley Radii. Draw circles with radii Ri and R2 and a line tangent to them. At middlepoint of C erect a perpendicular and locate a point on it, .314 C abovecenter Hne. With this point as a center, draw an arc tangent to thebelt line. Lines tangent to this arc will determine diameters…
Machinery
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