who started rogers locomotive and machine works?
Thomas Rogers, Morris Ketchum and Jasper Grosvenor.
Rogers Locomotive and Machine Works
The company was founded by Thomas Rogers in an 1832 partnership with Morris Ketchum and Jasper Grosvenor as Rogers, Ketchum and Grosvenor. 
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Rogers Locomotive and Machine Works [SEP] Introduction
ALCO used the Rogers facilities through the 1920s as a parts storage facility and warehouse, but eventually sold the property to private investors. Today, several Rogers-built locomotives exist in railroad museums around the world, and the plant's erecting shop is preserved as the Thomas Rogers Building; it is the current location of the Paterson Museum, whose mission is to preserve and display Paterson's industrial history.