https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=85293&pn=1,629,205 Wrench with head hinged on the shaft and with reversible ratchet mechanism Patentee: Hans Distler - Feuerbach Germany Granted:1927-05-17

The reversible ratchet built into the "head" has pawls with partial "gear" teeth and a surrounding ring with corresponding internal teeth. One form of resulting wrench was distributed in the U.S. by the Emil Schwarz Co. (Chicago) as the driver for a 5/8" hex drive "ALL-In-ONE" ratchet and socket set. These were manufactured in Germany and imported. The ESPACENET entry for the patent lists corresponding patents from several European countries -- DE-425,020 is the German patent. The overall structure of "ALL-IN-ONE" includes features similar to British patent GB-205,819 and corresponding German patent DE-402,483 -- Hirsch & Mayer, Feuerbach.
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