Studies of machines for extruding clay columns - Augers, spacers, and dies for brick machines

P. C. Grunwell
1928 Bureau of Standards Journal of Research  
In this investigation special mechanical apparatus was designed and built to measure and record the work done on a known weight of extruded material by any practical combination of auger, spacer, and die. Electric metering devices were modified to compensate for current difficult ies in the electric-power service and to measure accurately the power input to the auger machine. Means were devised to make comparisons between the workable characteristics of various clays and shales and for
more » ... es and for selecting the extruding eq uipment to mold them efficiently into suitable commercial forms .
doi:10.6028/jres.001.037 fatcat:mmznbxvk5fb6pj4doju5ajnz2u