The British lock filers referred to this link as an "anti friction swivel"I set mine up the way they did.
When starting to cock the lock,resistence is noticeable then the half cock click is heard.This so called half cock is a loading/cleaning position for the hammer.It does engage the sear in an undercut place in the tumbler and will hold against the torque of the mainspring which in this lock and its mate I just finished today,is substantial.
Bringing the hammer from half cock to full cock,ready to fire takes little effort with the link almost back to the arms of the tumbler.As mentioned,the first position is a loading/cleaning position and in spite of the undercut engagement of the sear,a hard pull can defeat it on this or any other lock.On this lock and its mate,the plate and hammer are castings from R.E.Davis.The mechanisms are bench crafted by me using lathes,drill press and milling machine.The main and sear springs are hand forged.Both these locks will be used on two long range match rifles with Ed Rayl barrels in caliber 451 for a 550 grain bullet.
PPatch,
Some years ago,a German industrialist bought some locks from me including one of these and a Schuetzen lock and triggers.He bought them not to use but to have modern American work of this quality.
Bob Roller
