Industrial Drawing Comprising the Description And Uses of Drawing Instruments
Industrial Drawing Comprising the Description And Uses of Drawing Instruments
Dennis Hart Mahan
The book Industrial Drawing Comprising the Description And Uses of Drawing Instruments was written by author Dennis Hart Mahan Here you can read free online of Industrial Drawing Comprising the Description And Uses of Drawing Instruments book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Industrial Drawing Comprising the Description And Uses of Drawing Instruments a good or bad book?
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(PL XI. Fig. 118. ) To construct the projec- tions ', as in the last problem, when the axis is parallel to the vertical, but oblique to the horizontal plane / the cylinder being in front of the vertical plane. This problem differs from the preceding only in that the position of the cylinder with respect to the planes of projec- tion is reversed ; the vertical projection, therefore, in this case, will be a rectangle, having its sides oblique to the ground line ; whilst, in horizontal projection,... the elements will be projected parallel to the ground line, and the circles of the ends into two equal ellipses. To make the projections, let us imagine the cylinder rest- ing on a solid, of which the rectangle XT is the horizontal, and the one Z the vertical projection, and touching the hori- zontal plane at the point of its lower end, of which c and c' are the projections. In this position, the rectangle c'd'b'a', constructed equal to the generating rectangle, will be the ver- tical projection of the cylinder ; the lines o' -p', and o -p, the projections of the axis ; and the two ellipses arbt, and csdu, of which r t, and s u, equal to the diameters of the circles of the ends, are the transverse, and a b, and c d, the horizontal projections of the diameters parallel to the ver- tical plane, are the conjugate axes, the projections of the ends.
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