Sliding Induction Coil based on Design by Du Bois-Reymond, c. 19

Induction Coil based on Ruhmkorff Design, c. 1910

Siemens & Halske Direct-Current Motor, c. 1920

Large Induction Coil by Max Kohl, c. 1915

3 Demonstration Electric Motors

4 Demonstration Model Electric Motors, c. 1910

10 Small Electric Motors, c. 1915

6 Vintage Model Electric Motors, 1900 onwards

6 Vintage Model Electric Motors, 1900 onwards

2 Electro-Magnetic Motors, c. 1900

Dynamo and 3 Electric Bells, c. 1915

Electro-Magnetic Motor with Rotating Geissler Tube, c. 1880

Electro-Magnetic Motor for the Rotation of Geissler Tubes, c. 19

Electro-Magnetic Motor with Rotating Geissler Tube, c. 1915

Carbon-Zinc-Battery by Gustave Trouvé, c. 1890

2 Demonstration Electro-Motor Trains, c. 1915

6 Unusual Electrical Motors, c. 1915

Electric Motor and 2 Armature Models, c. 1910

Alternating Current Motor by J. Kalb & Co., c. 1915

Large Electro-Magnetic Motor, 1910

Electrical Machine and Battery, c. 1900

5 Interesting Light Bulbs, c. 1920

Bright High-Wattage Light Bulbs, c. 1925

Large Electro-Magnetic Motor with Rotating Geissler Tube, c. 191

Ramsden's Electrical Machine, c. 1850