Founded in 1874 as a partnership between Fredrick Holtz and George A. Mueller, Holtz & Mueller changed their name to the Cincinnati Screw & Tap Co. in 1876. The milling machine part of the business started in 1878 and incorporated on 19 Mar., 1884. The milling machine business was spun off in 1889 and incorporated as the Cincinnati Milling Machine Co. The Screw & Tap firm operated until 1915.
Information Sources
American Milling Machine Builders: 1820-1920 by Kenneth L. Cope, 2007
- 1884 Cincinnati Milacron 1984, Finding Better Ways, © 1984 by the Cincinnati Milacron Co., Inc.