Manufacturers Index - Ryman Engineering Co.
Ryman Engineering Co.
Ellwood City, PA, U.S.A.
Manufacturer Class:
Metal Working Machinery
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
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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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2,479,536
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Aug. 16, 1949
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Grinding apparatus of the abrasive belt type
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John A. Elmes |
Beaver Falls, PA |
This patent provides an automatic belt tensioning mechanism. |
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2,609,610
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Sep. 09, 1952
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Gauge for roll crowns
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John A. Elmes |
Beaver Falls, PA |
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2,692,460
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Oct. 26, 1954
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Grinding apparatus for the traveling belt type
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William D. Roberts |
Pittsburgh, PA |
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2,712,204
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Jul. 05, 1955
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Grinding apparatus of the traveling belt type
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William D. Roberts |
Pittsburgh, PA |
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517,417
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Oct. 11, 1955
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Grinding apparatus of the traveling belt type
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William D. Roberts |
Pittsburgh, PA |
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518,310
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Nov. 08, 1955
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Grinding apparatus of the traveling belt type
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William D. Roberts |
Pittsburgh, PA |
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2,798,340
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Jul. 09, 1957
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Apparatus for grinding internal surfaces
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William D. Roberts |
Pittsburgh, PA |
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3,733,929
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May. 22, 1973
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Indexing apparatus
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James J. Fatula |
Perry Township, PA |
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3,961,736
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Jun. 08, 1976
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Rubber-covered self-centering rolls
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James J. Fatula |
Perry Township, PA |
The patent is not explicit but these rubber rolls are likely intended for calendering, that is flattening or coating sheets made of paper, textile or plastic. |
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3,961,737
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Jun. 08, 1976
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Self-centering rolls
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James J. Fatula |
Perry Township, PA |
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1,007,257
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Mar. 22, 1977
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Self-centering rolls
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James J. Fatula |
Ellwood City, PA |
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4,292,767
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Oct. 06, 1981
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Belt grinder for grinding non-circular workpiece
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James J. Fatula |
New Beaver, PA |
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4,428,158
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Jan. 31, 1984
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Method and apparatus for grinding irregular surfaces
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James J. Fatula Sr. |
Ellwood City, PA |
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4,499,693
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Feb. 19, 1985
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Method of grinding non-uniform workpieces
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James J. Fatula Sr. |
Ellwood City, PA |
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Method of grinding non-uniform workpieces
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Martin J. Carroll |
Sun city Center, FL |
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