Suaer & Sohn 1913 help needed

[Colorado Pete]

I have a Sauer & Sohn 1913 in 7.65.

This is the strangest pistol I've ever owned. The trigger has two "steps" machines into it. A trigger bar--also called a disconnector in some books--fits into this. The trigger bar is supposed to fit onto one of these steps. At the opposite end of the trigger bar is the sear (which holds the firing pin back).

Since my particular pistol doesn't work properly I don't know which "step" in the trigger the trigger bar fits into under normal operations--and what the other "step" is for. No gunsmithing books describes how this particular trigger/trigger-bar operates. (and yes, I've read JB Wood's books).

Does anyone have one of these pistols and able to describe how the trigger and trigger-bar works?

 

[Jim K]

When the pistol is cocked, the sear bar is in the lower position on the trigger, held there because the firing pin spring is pressing the firing pin forward and the firing pin in turn is pressing forward on the sear bar, causing it to pivot down onto the bottom part of the trigger. When the trigger is pulled, the sear bar is forced backward and down at the rear, releasing the firing pin. That relieves the pressure on the sear bar from the firing pin spring, and allows the sear spring to force the sear into the upward "notch". When the slide goes back into battery, the sear catches the firing pin and the firing pin spring again tries to force the sear bar down at the front, but it cannot do so until the trigger is released, at which point the firing pin spring overrides the sear spring and forces the sear bar to again drop down to the lower position. So the firing pin spring not only activates the sear bar but also functions as the trigger spring.

So the answer to the question at which point the sear bar fits onto the trigger, the answer is both, depending on what part of the cycle is involved.

That pistol design is interesting in that much of the trigger/sear functioning depends on the firing pin spring. If that is weak, the pistol will not work properly.

HTH

Jim

 

[Colorado Pete]

Thank you Jim. That seems to make sense. I'll go look at this pistol again and see if I can make the parts work according to plan! I think someone has been "working" on the nub that fits into the trigger recess. It will probably have to have metal re-welded to build it back up and then re-shaped. More likely, I'll just see about getting a replacement from Numrich. However I like the fact that all the two-digit part numbers match, so I may fix the original if I can.