Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 47
noskilled labor to operateit. There is nothing toget out of order or causedelays. It is adaptedfor both large and smalljobs. In the formercase, it is usually fed bymeasure and bv thismethod will produceconcrete as fast as thematerials can be fed totheir respective bins andthe mixed concrete canbe… … Fig. 7. Portable Gravity Mixer. 35 2G REINFORCED CONCRETE There are two spray pipes placed on the mixer: for feedinf;by hand one Spray only would be used; the other spray is only in-tended for use when operating with the measure and feeder, and alarge amount of water is required. These sprays are…
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