. The railroad and engineering journal . l i, 2 2, and 3 3 through the points of division. Now ascer-tain the length of the lines 11,22, and 3 3, of fig. 324, by meas-urement, and ascertain the circumferences of which these meas-urements are the diameters. Take one-sixteenth of ihe cir-cumference of I I and set it off on each side of Ihe perpendicularf g on i I. Proceed In the same way with the diameter 2 2,and set off one-sixteenth of its circumference from f g on 2 2. 422 THE RAILROAD AND [September, 1891. Fig- 327-. Repeat this process with 3 3 and 3 draw curves d 1 2 3/ and £■ i2 3
. The railroad and engineering journal . l i, 2 2, and 3 3 through the points of division. Now ascer-tain the length of the lines 11,22, and 3 3, of fig. 324, by meas-urement, and ascertain the circumferences of which these meas-urements are the diameters. Take one-sixteenth of ihe cir-cumference of I I and set it off on each side of Ihe perpendicularf g on i I. Proceed In the same way with the diameter 2 2,and set off one-sixteenth of its circumference from f g on 2 2. 422 THE RAILROAD AND [September, 1891. Fig- 327-. Repeat this process with 3 3 and 3 draw curves d 1 2 3/ and £■ i2 3 /through the extremities of thehorizontal and perpendicular lines infig. 326. The (iguie /e if will then bethat of one of the sections of the coverof the dome.* CHAPTER XIV. PENETRATIONS OR INTERSECTIONS OFSOLIDS. On examining the minor details ofmost machines, we shall find numerousexamples of cylindrical and other formsfitted to and even appearing to passthrough each other in a great variety ofways. A number of examples havetherefore been selected, showing theoutlines formed by the penetration ofvarious solid bodies, with a view of ex-hibiting those cases which are of mostfrequent occurrence, and elucidating thegeneral principles which are applicablein every case. PENETRATIONS OF CYLINDERS. Problem 123. Ta deliniaie Ihe inter-sections of two cylinders of equal diame-ters at right angles to each other. Let fig. 327 represent a side view,fig. 328 an end view, and fig. 329 aplan of two such intersecting cylin
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
