If you find a patent number or patent date by this manufacturer that is not on this
list, please contact the Site Historian.
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.
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3,153,369
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Oct. 20, 1964
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Milling apparatus
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Manfred E. Strohecker |
Philadelphia, PA |
This ingenious milling machine head mounts on a vertical milling machine and allows the cutter spindle to be rotated around an offset vertical axis. The rotation replaces that of a rotary table, except rather than rotating the workpiece it rotates the spindle (about an offset axis). |
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Milling apparatus
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Herman C. Voellm Jr. |
Philadelphia, PA |
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3,249,017
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May. 03, 1966
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Milling apparatus
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Herman C. Voellm Jr. |
Philadelphia, PA |
This patent's application was split from that for patent 3,153,369; see that patent for a description of this milling machine accessory. This patent specification references Kearney & Trecker's patent 2,835,172 and Portage Double-Quick, Inc.'s patent 2,960,013. |
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Milling apparatus
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Manfred E. Strohecker |
Philadelphia, PA |
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3,589,237
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Jun. 29, 1971
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Double cross-slide milling attachment
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Manfred E. Strohecker |
Hatboro, PA |
This invention enhances the rotary milling head accessory of patents 3,153,369 and 3,249,017 by adding X-Y positioning to the offset spindle. |
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Double cross-slide milling attachment
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Herman C. Voellm Jr. |
Meadowbrook, PA |
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