Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 355
Fig. 129. Paddle Mixer. tensively developed. One difficulty is that they require the constantattention of an attendant, unless the materials are perfectly uniform.If the machine is adjusted for sand with a certain percentage ofmoisture, and then is suddenly supplied with sand having greateror less…
Architecture · Building
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