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 201
small name plates, stove plate, etc., while Xo. 8 or 6 is goo<ifor general machinerv work. On floor work, from 4 to 6 mches ofsand back of the facing should be riddled through a No. 4 sieve toensure more even ramming and venting. RAMMING The object of rammim/ is to make the sand hang into the… … Fig. 19. Setting Gaggers. vent causing blow holes. Iron will not lay-to a hard surface.Soft ramming leaves a weak mold surface and the flow of the metal asit enters the mold will wash or cut the sand, leaving a scab onone part of the casting and sand holes on another. A mold rammedtoo soft will…
Mechanical engineering -- Dictionaries
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