Odd, I found 2 similar ratchets, one with the weird side pawls, one with that odd handle design, but both are unmarked and unidentified...
Neither had the strange socket retainer tho (bridge ratchet?)
EDIT: Perhaps patent 562689, which shows a hooked socket retainer and 2 side pawls....(from 1896, not assigned, only patent found by A. Willows)