Welcome! 

Register :: Login
Manufacturers Index - Craig Ridgway & Son Co.
Patents
This page contains information on patents issued to this manufacturer.

Submitting Patent Information

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.

Patent Number Date Title Name City Description
276,076 Apr. 17, 1883 Elevator William H. Ridgway Coatesville, PA
374,756 Dec. 13, 1887 Crane William H. Ridgway Coatesville, PA Subsequently improved in patent 411,681.
411,681 Sep. 24, 1889 Crane William H. Ridgway Coatesville, PA Improvements to patent 374,756.
415,561 Nov. 19, 1889 Water-wheel William H. Ridgway Coatesville, PA Improvements to patent 230,339.
453,449 Jun. 02, 1891 Jet or impact water-wheel William H. Ridgway Coatesville, PA
582,092 May. 04, 1897 Air-hoist William H. Ridgway Coatesville, PA Subsequently improved in patent 649,357.
649,357 May. 08, 1900 Hoisting apparatus William H. Ridgway Coatesville, PA Improvements to patent 582,092.
666,156 Jan. 15, 1901 Steam hydraulic elevator Ellis B. Ridgway Coatesville, PA
833,632 Oct. 16, 1906 Steam hydraulic hoist William H. Ridgway Coatesville, PA Subsequently improved in patent 914,978.
914,978 Mar. 09, 1909 Overflow device for pressure-tanks, &c. 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)..."