The floor polisher (formerly called polishing apparatus, Blocher in Switzerland ) is an electrical device work for floor care, which is a further development of the Bohner broom.
In 1904, the Hungarian inventor Alfred Pongracz developed the first electric floor polisher (German Reich Patent No. 166 534 from August 30, 1904 ), but came because of technical inadequacy of the machine in bankruptcy. The AEG in Berlin could not settle ordered by Pongracz 1000 Electric motors and instructed the Berlin engineer Ernst Franke with the further development of a functioning electric floor polisher to the production stage, using the otherwise unsaleable electric motors.
For this purpose, Ernst Franke founded in 1905, German Blitz Bohner mbH, from 1912 emerged the HaWig laundry machine company, numerous patents (including the Deutsches Reich Patent No. 468 099 of 1 December 1926) filed and the first electric floor polishers brought to market.
The electric lightning polisher "Victor", which was constructed in 1912 by Ernst Franke, consisted of an electric motor with mounted, detachable brush ( a patent by Ernst Franke No. 468 099 of 1 December 1926), which turned after turning on the electric motor and the bottom polished. The crucial invention (German Reich Patent No. 284 650 of January 15, 1914 ) was to equalize the torque produced by the rotating brush, so that the machine operator could steer this without effort in all horizontal directions.
Later also Bohner machines were built with two slices and dust extraction. There are also floor polishers with three slices. Meanwhile, the waxing is displaced by the cleaners, with rapidly rotating plastic pads clean the floor thoroughly and create shine. These machines are available with simultaneous dust extraction, as single- or twin-disc machine.