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Manufacturers Index - Hamilton Machine Tool Co.
Patents
This page contains information on patents issued to this manufacturer.

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Key to Links for Patent Information

USPTO = U.S. Patent Office . Images of the actual patent can be viewed on the U.S. Patent Office web site but a special TIFF viewer must be installed with your browser in order properly work. More information on how to configure your computer to view these patents can be found at TIFF image Viewers for Patent Images.
DATAMP = Directory of American Tool And Machinery Patents . A sister site to VintageMachinery.org with information on patents related to machinery and tools. A much easier user interface than the USPTO's for finding information on machinery patents.

Patent Number Date Title Name City Description
630,077 Aug. 01, 1899 Engine-lathe Sherman C. Schauer Hamilton, OH Sherman C. Schauer had been superintendent of the Hamilton Machine Tool Co., which made drilling machines and engine lathes. In late 1898 or early 1899 (certainly by February of 1899) he had left that firm to co-found drilling machine manufacturer Cincinnati Machine Tool Co. It seems likely that this engine lathe was developed while working for Hamilton Machine Tool Co. but we cannot confirm that they actually used it or had the rights to it. We have seen this patent date listed in a 1901 catalog from Lodge & Shipley, for their "Raise-and-Fall Rest".
802,489 Oct. 24, 1905 Speed-changing device Hans Baerbalck Hamilton, OH The 1912 Hamilton Directory lists our inventor, Hans Baerbalck, as a draftsman at the Hamilton Machine Tool Co.
870,759 Nov. 12, 1907 Relieving Mechanism for Engine Lathes Hans Baerbalck Hamilton, OH Robert S. Carr - patent attorney
My invention relates to relieving mechanisms for engine lathes, of the class adapted for turning fluted reamers or other tools with relieved cutting edges, and the objects of my improvement are to provide means to reciprocate the tool carrier in different horizontal angles of adjustment; to adjust the tool carrier in the direction of its reciprocating movement; to provide means to automatically advance or retard the movement of reciprocation of the tool carrier in relation to the speed of rotation of articles to be turned to register with, a, predetermined helical line thereon; to provide adjustable means to adapt the attachment to relieve the rutting edges of either straight or tapered articles having a predetermined number of either straight or helical flutes, and to adapt the mechanism to a wide variety of engine lathes.

923,930 Jun. 08, 1909 Metal-planer Hans Baerbalck Hamilton, OH "My invention relates to metal planes, and the objects of my improvement are to provide means for changing the speed of the table in one direction only while its speed in the opposite direction remains constant; to inclose the change gears within the planer bed to protect them from injury and for obviating the usual vibration of the parts; to provide shifting mechanism on the outside of the bed for shifting the change gears separately to prevent them from conflicting; and to provide the most durable, simple and compact construction and assemblage of parts..."
988,292 Mar. 28, 1911 Shaper Hans Baerbalck Hamilton, OH
    Shaper Charles D. Gibson Hamilton, OH  
994,899 Jun. 13, 1911 Gearing Hans Baerbalck Hamilton, OH
1,003,315 Sep. 12, 1911 Gearing Charles D. Gibson Hamilton, OH
    Gearing Hans Baerbalck Hamilton, OH  
1,258,129 Mar. 05, 1918 Combined drip-cup and wiper Alfred R. McCann Hamilton, OH
1,358,051 Nov. 09, 1920 Feeding mechanism for metal-working machinery Hans Baerbalck Hamilton, OH
1,431,919 Oct. 17, 1922 Crank-shaft lathe Hans Baerbalck Hamilton, OH