Manufacturers Index - Curtis & Co. Manufacturing Co.
Curtis & Co. Manufacturing Co.
St. Louis, MO, U.S.A.
Company Website: https://fscurtis.com/
Manufacturer Class:
Wood Working Machinery
This page contains information on patents issued to this manufacturer.
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USPTO's for finding information on machinery patents.
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70,728
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Nov. 12, 1867
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Improvement in saws
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James K. Lockwood |
Alpena, MI |
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106,387
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Aug. 16, 1870
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Improvement in guide for circular saw
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Alexander Middlebrook |
Glasgow, MO |
An 1886 catalog from Curtis & Co. features "A. Middlebrook's patent guide for circular saws". |
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RE7,753
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Jun. 19, 1877
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Improvement in circular saws
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James K. Lockwood |
Alpena, MI |
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RE8,076
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Feb. 05, 1878
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Improvement in circular saws
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James K. Lockwood |
Alpena, MI |
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RE9,197
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May. 11, 1880
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Circular saw
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James K. Lockwood |
Alpena, MI |
The original was patent 70,728. |
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351,672
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Oct. 26, 1886
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Saw-guide
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Samuel S. Vail |
St. Louis, MO |
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369,026
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Aug. 30, 1887
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Two-saw trimmer
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William F. Parish |
Minneapolis, MN |
An 1895 catalog from Curtis & Co. Mfg. Co. shows a two-saw lumber trimmer that closely resembles the machine of this patent. The catalog's saw is illustrated but not really described and does not mention a patent. But given the strong resemblance we show this patent as manufactured by Curtis & Co. |
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D30,348
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Mar. 14, 1899
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Design for a pulley
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Milton F. Williams |
St. Louis, MO |
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D30,347
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Mar. 14, 1899
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Design for a pulley
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Milton F. Williams |
St. Louis, MO |
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658,770
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Oct. 02, 1900
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Lumber-stacking machine
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Robert Fullerton |
Des Moines, IA |
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686,778
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Nov. 19, 1901
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Relief-governor for air-compressors
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George F. Steedman |
St. Louis, MO |
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1,153,181
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Sep. 07, 1915
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Air-drier
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George F. Steedman |
St. Louis, MO |
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1,159,123
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Nov. 02, 1915
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Compressor
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George F. Steedman |
St. Louis, MO |
Improvements to the water-jacketed compressor head of patent 770,785 so that the valves can be removed and replaced more easily. |
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1,162,262
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Nov. 30, 1915
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Lubricating apparatus for compressors and similar machines
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George F. Steedman |
St. Louis, MO |
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1,215,071
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Feb. 06, 1917
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Unloading-Valve for Compressors
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George F. Steedman |
St. Louis, MO |
A full-page ad from Curtis Pneumatic Machinery Co., in the 1926-01-07 Motor Age, page 184, features their shop air compressors and mentions their "Patented Centrifugal Unloader, consisting of a compression control release, operated by a speed governor built in the fly wheel. If the motor slows down or stops for any reason whatever, the Curtis unfailingly unloads the Compressor so that when it starts again it will not start against tank pressure, thus protecting the motor, belt and compressor from any possible damage due to starting strains."
The invention is an improvement on patent 686,778 to use variation in air-flow rather than in tank pressure to govern the unloader action. |
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1,396,391
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Nov. 08, 1921
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Power-operated compressor
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Charles W. Frees |
St. Louis, MO |
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Power-operated compressor
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Frank Ackerman |
St. Louis, MO |
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1,428,402
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Sep. 05, 1922
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Reciprocating Pump or Compressor
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George F. Steedman |
St. Louis, MO |
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1,435,574
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Nov. 14, 1922
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Lubricating System for Piston Engines
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Frank Ackerman |
St. Louis, MO |
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1,576,702
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Mar. 16, 1926
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Electrically Operated Bridge Crane
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Frank Ackerman |
St. Louis, MO |
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1,708,158
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Apr. 09, 1929
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Valve structure for compressors
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Edwin H. Stedman |
St. Louis, MO |
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