Louis Heinrici

The official company name was: Louis Heinrici, mechanical workshops for precision work, Zwickau in Saxony.

The hot-air engines produced by Heinrici, as a mass-produced product, were widely used in the commercial and private sectors because they served as inexpensive and reliable sources of power.

In 1914, the factory had areas for metalworking, plumbing, a paint shop, another building for the turning shop and a laboratory and trial room for test runs, as well as an office building for sales offices and warehouses.

In his 1914 catalogue, Heinrici stated: "Today after 38 years of activity, I still make the same article on a large scale, which I - thanks to thorough study of all relevant issues of a scientific and technical nature for the construction of such machines, as well as tireless forward striving for attainable perfection - have achieved first place in world trade".

For several decades, Louis Heinrici had built hot air engines in twelve sizes from 26 to 190 mm piston diameter and in the power range from 1.5 W to 0.2 kW.