Handbook for machine designers, shop men and draftsmen (1916)
Halsey, Frederick A. (Frederick Arthur), 1856-1935 · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 24
Fig. 29.—Example of correct frame design and support. Figs. 34 and 36, the corners being slightly rounded so as to harmonizewith the other members but never made semicircular. This isalways wrong and looks so. Struts, ties and braces should be in straight lines, unless set incurved intersections…
Machine design
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