[SEL] ring traveler help

[Germoamer at aol.com]

_http://www.oldengine.org/members/schmutz/images/ring%20traveler.jpg_ 
(http://www.oldengine.org/members/schmutz/images/ring%20traveler.jpg) 
 
 
Found in a box of auction stuff.  Envelope full of clips as  shown.  
Envelope says U. S. Ring traveler Co. Providence R.I.  Size 2  1/2 Grain  Style 
872 oval.
 
I can find information on the company, and ring traveler  manufactures.  
But I cannot find out what a "ring traveler" is, how it was  used, or what it 
was used for.  Anybody have any information?  

Thanks,
 
Tom  Schmutz
Concord,  Va.
germoamer at AOL.com