Floor polisher
The floor polishing machine (formerly known as floor polisher , Blocher in Switzerland ) is an electrical tool for floor care, which is a further development of the floor broom .
In 1904 the Hungarian inventor Alfred Pongracz developed the first electric floor polishing machine (German Reich patent No. 166 534 of August 30, 1904), but then went bankrupt due to the technical inadequacy of the machine. The AEG in Berlin could not sell the 1000 electric motors ordered by Pongracz and commissioned the Berlin engineer Ernst Franke with the further development of a functioning electric floor polishing machine until it was ready for series production using the otherwise unsaleable electric motors.
To this end, Ernst Franke founded the Deutsche Blitzbohnergesellschaft mbH in 1905 , from which the HAWIG Hauswirtschaftsmaschinen-Gesellschaft emerged in 1912, which registered numerous patents (including German Reich Patent No. 468099 of December 1, 1926) and brought the first electric floor polishing machines onto the market.
The electric lightning polisher "Victor", which was designed by Ernst Franke in 1912, consisted of an electric motor with an attached, removable brush (a patent from Ernst Franke No. 468099 dated December 1, 1926), which turned after the electric motor was switched on and polished the floor. The decisive invention (German Reich patent no. 284650 of January 15, 1914) consisted of compensating for the torque generated by the rotating brush so that the operator of the machine could steer it in all horizontal directions without any effort.
Later on, polishing machines with two discs and dust extraction were also built. But there are also floor polishers with three discs. In the meantime, polishing is being replaced by cleaning, with fast-moving plastic pads cleaning the floor thoroughly and creating a shine. These machines are also available with simultaneous dust extraction, as single-disc or double-disc machines.