Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)
Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 403
1649. DISAPPEARING GUN, Moncrief model. The cyclcidaicurved rack arm E is counter-weighted, which balances the re-coil of the gun by its increasedleverage. The small connectingrod, rack, and pinion adjust theguns alignment.
Mechanical movements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.