CW Friction Primers for Artillery

[BamaBill]

Does anyone know approximately how long the twisted wire igniters were on friction primers? Also, does anyone have a photo of a spent one they can post? I'm trying to determine if
the twisted wire pieces I found could have been from friction primers or if they were from screen door hardware.

 

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[stoney56]

twisted wire like this?

http://forum.treasurenet.com/index.php/topic,49135.msg350356.html#msg350356

 

[BamaBill]

Yep, its twisted like that, but it looks like his photo is a composite and if so, I cannot tell how long the wire is. Do you know if they were variable lengths? I have the M&M Projectiles book and while it gives a real good description of friction primers it neglects to give dimensions.

 

[stoney56]

I don't know about variable lengths. I've got a couple w/o wires put up in a case but did find this one with the wire intact and some 3 ringers in the same pic for size comparison.

http://forum.treasurenet.com/index.php/topic,114466.0.html

 

[BamaBill]

Ok, looks like what I have is indeed screen door hardware as its about twice the size of the ones I'm seeing. Oh well...