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Description
Historical Background
This early German-manufactured electric motor was produced by Max Kohl Aktiengesellschaft (AG) in Chemnitz, Germany. Max Kohl was one of Europe’s premier late 19th and early 20th-century manufacturers of precision scientific apparatus, physics demonstration equipment, and precision laboratory instruments. Following the founder's passing in 1908, the workshop incorporated as an AG, placing the manufacture of this piece in the early 20th century (circa 1910s–1920s).
The motor features a rounded semi-spherical housing with ventilated cast end-bells, prominent knurled oiler cups, heavy wiring terminals, and the original cast metal specification plate attached to the casing.
Specifications & Markings
Manufacturer: Max Kohl Aktiengesellschaft (AG), Chemnitz, Germany
Horsepower Rating: 1/8 PS (Pferdestärke — German Metric Horsepower)
Operating Voltage: 110 Volts Direct Current (DC / D.C.)
Current Draw: 1.2 Amperes
Serial / Model Number: 8434 (stamped on brass plate)
Mounting: Mounted on a vintage solid wood block base secured by undersunk flathead screws
Condition & Testing
Operation: Fully bench tested and running very well. Operates smoothly with no mechanical hesitation or operational defects.
Power Requirement: Operates exclusively on Direct Current (DC) at 110 Volts. Do not connect directly to standard household alternating current (AC) without an appropriate DC power supply or rectifier.
Cosmetic Condition: Preserves its authentic antique patina throughout. Original black japanned/painted finish exhibits age-appropriate paint wear, faint surface oxidation, and vintage hand-stenciled red specification lettering ("1/8 PS" and "110 Volt"). The wood base shows genuine workshop character and wear.
A standout piece of early European industrial and electrical engineering history, ideal for collectors of antique electric motors, early dynamos, or precision scientific instruments.
