The principles of pattern making, written specially for apprentices and students in technical schools (1900)
Horner, Joseph Gregory, 1847-1927 · London, New York, Pitman · leaf 55
in boxes of thiskind is always liable to occur, because of the differencein thicknesses at D and E. In Figs. 27-31, common constructional joints ofanother type are shown. These are termed half lapjoints, or halvings. They are used on all thin, openframings for base plates, engine beds, vertical… … Fig. 27. Example of Framed Work.
Patternmaking
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