Electrogalvanic amulet, Richardson's Magneto-Galvanic Battery (or possibly a fake?), disc with cross at centre and 14 small discs arranged in a circle around it. Made of zinc, brass, copper, iron and nickel, with woven string instead of chain. Made by A.M. Richardson & Co., New York, USA, 1880-1900. Engraved on front of cross with two hearts radiating electric bolts, and on reverse side with 'PAT & RD US, GB, FRANCE, ITALY ETC.' Note gap in outer ring around disc. Similar to A602762. Electrogalvanic amulet Therapeutics 1880-1900
Gnome 50 HP 7 Cylinder Rotary aero engine, with metal engine to fuselage gasket, designed by Louis Seguin and Laurent Seguin, and made by Societe des Moteurs Gnome, France, 1908-1914. The engine has seven cylinders, machined out of solid nickel-chrome-steel ingots. The cylinders and crank-chamber revolve around the stationary crankshaft. The carburettor, which is stationary, is of the single-jet type and feeds the engine through the hollow crank shaft. The connecting rods all operate on a single crank pin. Henri Farman used this type of engine to win a prize for the greatest distance flown (180 km), setting a World record. Gnome 50 HP 7 Cylinder Rotary aero engine Aircraft Propulsion 1908-1914
