Description: Patent for improvements in elevators and conveyers for concrete-mixers “whereby the mixed concrete can be fed to the wall mold at different elevations, the elevator being extended and the conveyer raised for constructing the successive stories of the building.” (Lines 17-21) Illustration is included.
Date: July 1, 1913
Creator: Miller, Frederick
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department