Presumably Benzing were a French company as they are using the French word brevete which means patented. It is as you say a pigeon racing clock, used to time pigeon races. What do you want to know about it?
Hi Carlos, I know very little about them but as luck would have it an example of one of these clocks just like yours is shown in Collectable Clocks page 415 which could be used to time 12 birds, it appears yours allows for 14. That one has a label with the instructions in the underside of the lid and another label on the top of the movement which presumably records such things as the maker, model etc. According to that book there were two types of pigeon clocks, those that recorded the time by pricking a hole in a paper dial or tape and those that printed it, your clock is the former.
The Benzing Original patent was taken out in France in 1925 and described springs fitted to the pallets to prevent cheating by shaking the clock to accelerate timing.
Benzing is a German factory of technical watches/clocks,still in busines,in Villingen/Schwenningen,Black Forest Region of south west Germany.They made pigeon race clocks as well as precision clocks and time recorders for different purposes. The movements are of good quality . Google for their Website.HTH
Like I said, I had never seen one of these clocks and wanted to know any information about it, like maker, years of production, collectability, rarity, etc.
I was wondering if it was worth it to add it to my collection.
Thank you all for sharing the above information.