{HEAD ~ a blind hole} being disposed in said arched notch and being spaced from one end of said arched notch at a distance approximately 1/4 of a transverse width dimension of said arched notch; said second end of said spring being mounted in {TAIL ~ said blink hole} 
{ HEAD ~ a blind hole } being disposed in said arched notch and being spaced from one end of said arched notch at a distance approximately 1/4 of a transverse width dimension of said arched notch ; said second end of said spring being mounted in { TAIL ~ said blink hole }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL