Mechanical Appliances, Mechanical Movements and Novelties of

For Engineers, Draughtsmen, Inventors, Patent Attorneys, and All Others Interested in Mechanical Operations. Including an Explanatory Chapter on the Leading Con... » 

For Engineers, Draughtsmen, Inventors, Patent Attorneys, and All Others Interested in Mechanical Operations. Including an Explanatory Chapter on the Leading Conceptions of Perp «