Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 371
Flg. 143. McKelvey Charging Bucket Discharging Batchinto Mixer Operated by Same Power. 303 288 MASONRY AND REINFORCED CONCRETE … bination of car and derrick work is easily made by using flat cars withderrick buckets. 344. Boilers. Upright tubular boilers are generally used to supply steam forconcrete mixers andhoists operated bysteam enginesjwhenthey are isolated.For the smallersizes of mixers, theboilers are on thesame…
Architecture · Building
Internet Archive · Kelly Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
