1874 Print Pulsometer Steam-Boiler Vintage Machinery C. Henry Hall MAB1 DC This is an original 1916

This is an original 1916 halftone print of the Italian inventor Luigi Risso's creation of a pair of pontoon floating water shoes for the Italian army to utilize during World War I

suspenders

who was most known for his life as the Comte d'Artois (leader of the province in Northern France) before he reigned as King of France and Navarre

" at Radcliffe College in Cambridge

Keywords specific to this image: Factories

1874 Print Pulsometer Steam-Boiler Vintage Machinery C. Henry Hall MAB1 DC This is an original 1916This is an original 1874 halftone print of a Pulsometer in operation at distance from Steam Boiler, showing the practical arrangements of connection, manufactured by C. Henry Hall & Company, 20 Cortlandt Street, New York. This invention is a steam pump without cylinders, pistons, pistons rods, stuffing boxes, glands, eccentrics, slide valves, cranks or flywheels; consequently in such a pump there is no wearing out of pistons, rods, valves, etc., and