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Fonds includes records primarily created or collected by William Guptill, including correspondence, articles, publications, research notes, photographs and newspaper clippings.

Fonds includes items dealing with the invention of and patenting of a hydraulic gold extractor first registered in 1887. Also involves setting up a company to use the machine and begin gold mining. The material covers a period of 1883 to 1905, and involves many individuals in the business and legal community of Halifax and the South Shore. It also includes the original patent with the specification and diagrams, other diagrams, a 31 page hand written report by Westhaver on his trip to Dawson City, Yukon in 1902 to test his separator. A very interesting collection of letters, documents, legal correspondence, governmental material, etc., etc., dealing with the starting of a company to use the gold separate and Westhaver's various difficulties with financing and control.

File contains a poultry plucking machine patent that was issued on July 4th, 1944 to Angus Edward Banting, Truro, NS. Banting signed all his rights, title and interest of the invention over to the Department of Agriculture and Marketing of the Province of Nova Scotia.