J.C. Whitney used to sell a device like that to shorten up stretched E brake cables that had bottomed out the regular adjustment. It was a band-aid fix to avoid having to replace the cables.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!