This section is from the book "Cyclopedia Of Architecture, Carpentry, And Building", by James C. et al. Also available from Amazon: Cyclopedia Of Architecture, Carpentry And Building.
A vertical steam engine is generally used to operate the mixer. The smaller sizes of engines and mixers are mounted on the same frame; but on account of the weight, it is necessary to mount the larger sizes on separate frames. Fig. 132 shows a Ransome disc crank vertical engine, and Table XIX is taken from a Ran-some catalogue on concrete machinery. These engines are well-built, heavy in construction, and will stand hard work and high speed.