The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 181
spiral courses, in drawingsof skew atches, is productive of much labour. I liave been led to believe that the following plan is much simpler,more expeditious, and consequently easier of comprehension ; andalthough the same idea may possibly have occurred to others, it maynot be so generally known… … Let AB, fig 1, be a cvlinder, and DE any line making an acuteangle with the axis, it is evident that tlte line DE, is the locus of apoint haviniT a uniform motion, in each of the directions DB, DF, andif the line DE be wrapped round the cylinder, it will still possess thesame property, only tliat…
Architecture · Civil engineering · Science
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