Cash register, National model 422X, mechanical with paper receipt printer, serial no. 1520476. by the National Cash Register Company, c.1910. The National Cash Register Company, so named after it was sold by the inventor in 1884, dominated the saleso
Very early incandescent electric lamp made by Thomas Alva Edison (1847-1931), this lamp has a single loop of carbon which glowed when a current flowed through it. The glass bulb (made by the glass blower, Boehm) was evacuated so that there was so lit
Scissors, very elaborate exhibition piece, steel with gilt brass handle in form of a dagger, by J. Moseley and Son, London, 1850-190 Steel is an ideal material for objects required for cutting, such as scissors. The ability of steel to be heat treat
Cooke and Wheatstone's earliest (five-needle) telegraph, 1837
Mullard 10 pin 100 kcs circuit block OS1 B8 950 01 (green), with plastic pin cover, 1965. Made by the British company Mullard Ltd., these devices are complete electronic circuits, consisting of components sealed into boxes, which carry out specific l
Fuller's spiral slide rule, no. 849, made by W.F. Stanley, with an instruction booklet, c.1880. The spiral slide rule was invented to increase the length of the scale, and hence the accuracy, of the conventional slide rule. The Fuller's instrument al
The induction motor is the most widely used form of electric motor because it is simple and robust. Nikola Tesla (1856-1943), who was born in Croatia but worked in America, made the first practical induction motors. He made this working model motor t
Working model, scale 1:2, of a candle making machine. Made by Price's Patent Candle Company Ltd., Battersea, London.
Model E-1 'Electric Build-it Set' by Electric Games Co., Inc Holyoak, MA, USA
H.M.V. portable gramophone No.102 with soundbox No.5B, c. 1931.