The year would intrest me, too. Unfortunately no idea... Gebruder Lesser was working I believe 1908-1922 and machine was patented 1916, so probably there is quite small window for manufacturing years. I am no expert nor historian, so this is just guesswork, but I think you could quite probably say roughly WWI years plus few more years. I have no idea whether companies those days were making and selling machines before they got patent application accepted?
It is possible (and highly likely), that my machine has been owned by same family since it was first bought. My father (now on his 80's) knows the history after 1940's, I'll make sure that this machine won't end up in scrap heap ever.
And yes, there is something else in the old - mechanical - machines. This potato harvester is same time surprisingly complex, but at the same time geniously simple. You can only smile when you look at these
Here are the figures from patent document. Wilhelm Adalbert Lippitz was assosiated with Gebruder Lesser fabrik, probably main engineer or lawyer helping for the patent? Very little information about him either. Lesser family and Lippitz were Jewish people I guess, those days it was still safe...
I tried to google thing from many coners, but very little information can be easily found. Gebruder Lesser was apparently sold to (company?) Cegielski, does it make any sense? Quite difficult to try to follow everything with google translate
Something that direction from page
https://wielkopolskahistorycznie.pl/202 ... osci-cz-2/
If you find something more or have some clues where to find more information please post here, I'll try to remember visit page later
I have seen one quite similar machine in a farming museum in Finland, but all I can remember it was manufactured in Lubeck. I'll try to find image from my archives some day...