Manufacturers Index - Craig Ridgway & Son Co.
Craig Ridgway & Son Co.
Coatesville, PA, U.S.A.
Manufacturer Class:
Steam and Gas Engines
This page contains information on patents issued to this manufacturer.
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276,076
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Apr. 17, 1883
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Elevator
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William H. Ridgway |
Coatesville, PA |
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374,756
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Dec. 13, 1887
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Crane
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William H. Ridgway |
Coatesville, PA |
Subsequently improved in patent 411,681. |
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411,681
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Sep. 24, 1889
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Crane
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William H. Ridgway |
Coatesville, PA |
Improvements to patent 374,756. |
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415,561
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Nov. 19, 1889
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Water-wheel
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William H. Ridgway |
Coatesville, PA |
Improvements to patent 230,339. |
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453,449
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Jun. 02, 1891
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Jet or impact water-wheel
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William H. Ridgway |
Coatesville, PA |
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582,092
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May. 04, 1897
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Air-hoist
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William H. Ridgway |
Coatesville, PA |
Subsequently improved in patent 649,357. |
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649,357
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May. 08, 1900
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Hoisting apparatus
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William H. Ridgway |
Coatesville, PA |
Improvements to patent 582,092. |
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666,156
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Jan. 15, 1901
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Steam hydraulic elevator
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Ellis B. Ridgway |
Coatesville, PA |
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833,632
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Oct. 16, 1906
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Steam hydraulic hoist
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William H. Ridgway |
Coatesville, PA |
Subsequently improved in patent 914,978. |
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914,978
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Mar. 09, 1909
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Overflow device for pressure-tanks, &c.
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William H. Ridgway |
Coatesville, PA |
"My invention is especially adapted for use in connection with the steam hydraulic hoist for which application for patent was filed by me on the 30th day of September, 1904, Serial No. 226,690, and allowed April 9, 1906 (patent 833,632)..." |
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