Miracle concrete: the great modern industry (1909)
Miracle Pressed Stone Co. · Miracle Pressed Stone Co. · leaf 124
Hand Tower Machine EXPLANATION OF THE MACHINE The concrete is mixed very wet by an ordinary mixer or by hand on a one to three proportion and is wheeled by inclined planes to theplatform and put into the mold (shown in place) by a hopper (see the top). The mold is raised and dropped vertically 120…
