So a while back, about 3 or 4 years back, I was doing some research on cap and ball, and gunsmiths.
I remember I found a shop, they did a bunch of work on these things, I saw a thing talking about installing a transfer bar.
Can you on one of these things? Like I edc this, and it sorta be cool to have a safety on a gun designs older then dirt.
I think that it could be a lot easier and cheaper to simply install a hammer block safety mechanism and not a "transfer bar."
I can think of 2 single action revolvers that have a safety.
One is the Heritage Rough Rider .22.
It's simply a rotating pin attached to a small lever that flips it.
One side is ground down enough to allow the hammer to fall, the other side is round and fat enough to block the hammer from falling all of the way.
The other safety was called a "Swiss Safe" hammer block that was invented for the Interarms Virginian Dragoon that were originally made by Hammerli before production was moved to the US by Stoeger who owned Interarms.
That safety blocked the hammer by pushing the base pin or cylinder pin farther in towards the hammer, until it contacted the hammer in a location that was back far enough to be safe and off the firing pin.
The cylinder pin had 2 notches or rings in it, one was for the safe position and the other was for the firing position.
When the pin was in the "out" or firing position the hammer wasn't blocked and could fall.
When the pin was pushed "in" to the safe position, it physically kept the hammer back far enough to not be able to contact the firing pin.
The hammer would need to be placed on half-cock in order to move the pin in or out to put the gun on safe or to take if off of safe.
I don't know if the Heritage Rough Rider type safety could be added to a C&B or not.
It would require precise drilling of the holes for it in the right location, and would depend on whether there are any other parts in the way.
The Heritage does use a specialized part that has a 90 degree lever, with a small cut out in the frame that allows it to be flipped.
But I'm not sure whether that part of such a hammer block safety design is necessary or not.
Perhaps the flip lever could be placed on the side of the frame instead of integral with it.
Or a safety could be designed to be activated by a simple push button instead of a lever.