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 72
openingsM M in Figs. 37 and40. The two halvesof the box are alike.The core boxes forthe steam chest, AN ENGINE CYLINDER. 61 steam passages, and exhaust passage, are illustratedin Figs. 46-48. They are drawn to a larger scale thanthe previous figures in order to render their detailssufficiently… … Fig. 46. Core Cox for Steam Chest. recess K K of the steam chest in Fig. 38; and thewidth L L with the width L L in Fig. 39. The depthB of the box equals the depth of the recess in thesteam chest, plus the thickness of the print L. Themethod of construction of such a box is clear from Fig.46; C C…
Patternmaking
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