Cyclopedia of mechanical engineering; a general reference work. Editor-in-chief Howard Monroe Raymond. Assisted by a corps of mechanical engineers, technical experts, and designers of the highest professional standing (1908)
American School (Chicago, Ill.), Raymond, Howard Monroe · Chicago American Technical Society · leaf 240
reason this method isused where a large number of such holes are to be cored. In work where a hole must project well into the casting but not all the way through it, a • balancedcore is often used. Such a case isillustrated by the rammer head, Fig.75. AMien making this core, let thevent extend… … Fig. 75. Small Balanced Core. 209 56 FOUNDRY WORK length of print necessary to balance the projecting end and ensuresaccurate depth to the hole. Heavy projecting cores must be supported by cha[)lets, as illus-trated in Fig. 76. Vents may be taken off through a channel and air riser as explained in…
Mechanical engineering -- Dictionaries
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