New Style Chambers Lock

[Erzulis boat]

This Chambers "Virginia" fowler lock has a correct 18th century sliding (pin in tumbler) safety.

This is the lock that will be installed on the coaching carbine being built.

The extensive research on the coaching carbines of the day yielded many examples of safeties, from sliding with a provision in the ****, to pin in tumbler sliding (above), and even small dogs low on the ****.

I chose the sliding safety, as this would be more typical with a rounded ****.

It was not easy, as the sear/bridle screw is located in the sliding safety zone. But as you can see, I managed to fit everything in.

 

[Erzulis boat]

This is the configuration of the safety.

The pin is slightly retracted to illustrate the proper location. The correct setup for this type of safety is a pin that engages while the **** is "half bent" (halfcock).

The raised forward portion of the sliding safety is hidden under the ****, and has about .005" clearance.

The safety positively locks in the forward and rearward positions via a spring and groove carefully situated between the sear spring.

I noted at least 3 variations on this type of safety, but this application (extremely tight space) warranted the installation of this particular style.

What is fantastic about this hobby, is that as long as you do not violate certain parameters, one can build a plausible arm.

 

[Story]

Nice. How many hours did that take?

 

[Erzulis boat]

About 8 hours of thinking, sketching, and looking at pictures....and maybe 1 hour to excecute.

:hmm:

But these times might not be exactly accurate, as I inlet a buttplate in 2 hours, but later was told by an impartial individual that I was down in the shop for 14 at least. :shake:

 

[BS]

Very nice looking work! :hatsoff:

 

[WRussell]

Nice. I'd guess I have over 10 hours in one I started a while back (on an L&R lock) which got set aside for something more interesting and is waiting for me to get back to it. (typical, typical...)

Thanks for the nudge. Good work. :thumbsup:

 

[Erzulis boat]

Thanks-

After I received the Chambers round face, I saw just how little room there was any modifications.

Hopefully the L-R lock gives you a little more breathing room.

From memory, I was thinking that this particular style of sliding safety was perhaps .250" wide, but after I actually "reverse engineered" some actual images, I determined that they were typically .375" to .400" wide. Whew! What a relief! That gave me enough room to straddle the sear/bridle screw directly rearward of the **** on the Chambers version.