The Minimax Apparate Bau Gesellschaft
was founded 1901 in Berlin by Wilhelm Graaff. He worked as a salesman
for a french extinguisher company, and noticed the flaws and disadvantages
of these extinguishers, and decided to invent his own.
Together with Ing. Hans Mikorey they applied for a patent for a conical
soda-acid fire extinguisher in december 1902.
The 'Spitztüte' as it was soon named, was model of steel plates, leaded
against corrosion. A small bottle containing sulphuric acid, was help
in a cage, this was broken by the plunger when knocked on the floor.
The extinguisher itself was filled with a water and 'soda' solution.
acid reacted with the soda in the water and produced instantaneously
CO2 gas, forcing the fluid out of the body. This pressure gave the extinguisher
a stream of 12m far or 8m high, and the chemical reaction released also
about 60l of CO2 gas.
The simple design and effectiveness made this extinguisher an instant
success. After only one year, already 50.000 were produced in the small
factory in Berlin.
The name of the extinguisher itself was found by a contest between employees
: Minimax, a Minimum of effort and weight, a Maximum of efficiency..