I am researching Joseph F. Buzby who invented a Glass Insulator <A HREF="http://www.insulators.com/photos/photos/1418-aqu.htm">Buzby Insulator</A > <A HREF="http://www.insulators.com/">Glass Insulators Home Page</A> . The patent copy I have states he lived in Royersford, Pa. in 1890, the patent date. It is signed by JE Snyder and DR Rhoads and the Model Drawing is witnessed by A. Ruppert and HA Daniels, the attorney was Thomas P. Simpson. Does anyone have any information on these names or information about how I could locate a law firm from 1890 in which Thomas P. Simpson practiced, please? Also, would anyone know of any type of business or facotry in the Royersford area that manufactured glass products or insulators? I am in Upstate New York and will appreciate any help. Thanks, Lea Simitz Buzby