GB1052031A - - Google Patents

Abstract

1,052,031. Concrete mixers. BENFOLD Ltd. Jan. 30, 1964 [Feb. 2, 1963; Feb. 5, 1963], Nos. 4349/63 and 4603/63. Heading B1C. [Also in Divisions B5, B8, F2 and G1] Apparatus for mixing concrete comprises an upwardly extending tower structure which incorporates at superposed positions a plurality of devices each contributing to the operation of mixing the material or to the storage of the mixed material (i.e. devices such as a silo 18 for cement, a weigher 20, a water delivery device, a mixer, a storage container for mixed material above a vehicle entry bay 10a and a central station 17) and the structure is subdivided into a plurality of units a, b, c each comprising a framework 10 supporting one or more of the devices, provision being made for holding the units together after assembly and the units being of suitable size for transport. The units may be assembled in several combinations to form more than one tower. Aggregate materials stored in compartments of a "star" bin 28, are scraped up to the top of a tower 29 with a bucket 36 by a poweroperated drag line 34 on a boom and fall through feed openings into a weigher 30 for loading into a bucket 26 of an elevator 24. The tower 29 and weigher 30 are parts of another unit d. The elevator 24 and boom are detachable, the latter being formed of several readily assembled units.