==== History ====

//Disclaimer: The history of crimping is a bit mired in corporate propaganda, to say the least.//
//Also the patent situation also gets quite muddy, especially in the early part of the 20th century, but here is my best guess for a timeline of events.//

  *1924 
    * G.H.E. Berthold patents a [[Closed Frame]] *six* indent crimp tool for [[Rajah Automotive Products]], it appears to be bench-mounted and is intended for automotive spark plug connectors.

  *1930
    * C.A. Rowley patents an [[Open Frame]] spark plug connector crimp tool for [[Rajah Automotive Products]], but this time it's handheld. (AFAICT this one was actually manufactured in meaningful quantity, as it can be readily found on online auction sites)

  *1935
    * [[H.A. Douglas]] of the [[H.A. Douglas Manufacturing Company]] patents a handheld [[Closed Frame]] *four* indent crimp tool for their "snap terminal"

  *1941
    * [[Stephen N. Buchanan]] patents the modern [[closed barrel]] [[Ring Terminal]] for [[Aircraft Marine Products]]