Actually, Frank A. Hollenbeck's Patent No. 643,601 granted Feb. 13, 1900, the date which is stamped on Baltimore Arms Co. gun's watertables --





covers the bolting mechanism and has nothing to do with the lock mechanism. Cut-away of the mechanism from the 1900 Baltimore Arms Co. catalogue --



Cut-away of the mechanism from the 1903 Baltimore Arms Co. catalogue --




Last edited by Researcher; 07/24/15 07:57 PM.