Infallible Single Trigger Archived Message Posted by H. McMurchy on August 16, 2015, 8:26 am, in reply to "Re: o grade barrel selector" The Lancaster Arms Co. manufactured firearms and accessories, most notably the "Infallible Single Trigger." The company was the brainchild of Alfred Harvey Worrest, inventor of the "Infallible." Worrest obtained his first patent in 1906 and kept perfecting the device through patents issued in 1912. 1925 20g Specialty courtesy of Skip Dunlap 1911 Schoverling, Daly, and Gales catalog Message Thread: o grade barrel selector - mike yonker August 16, 2015, 12:30 am Re: o grade barrel selector - David Williamson August 16, 2015, 6:06 am Infallible Single Trigger - H. McMurchy August 16, 2015, 8:26 am Re: Infallible Single Trigger - Bill Murphy August 19, 2015, 11:30 am   Searching