Well, on researching to find the origin of the word and meaning, it seems to go right back to middle ages and be a shortened version of cottarel or cotterell which meant a pin, wedge, or other device to prevent the relative movement of two parts; something that a split pin is incapable of doing. The cotter pin as used in UK seems to have originated right back in the early days of steam, as far as I can tell, when they needed something substantial to hold things like the connecting rods to the cranks. But it may go back further than that to the round taper wood pins used to hold many wooden parts together, as found in wooden beam buildings.
Sorry for the hijack!
"Impossible Is Just a Level of Difficulty!..." If I'd wanted you to understand, I would have explained it better! (Johann Cruyff) I’d give my right arm to be ambidextrous!
A pair of slip joint pliers helps to push the pennies in. Spiral around to keep it fairly straight.
"Love 'em all.... let God sort 'em out!"
Ex 2006 GL1800 - the Black Pearl SOLD! to make room for:
2021 Can-Am Spyder RT Limited Dark Chalk Metallic
1975 Red GL1000 project - ex Pistol Pete project
1972 Triumph T150V Trident rescue - finished and FOR SALE!
1976 Yamaha RD400c
1978 GL1000 with '75 engine - the Hunley
Ex 1978 GL1000
Ex 1979 GL1000
Ex '79 CB750F rat bike
Ex '86 SEi
Ex '77 GL1000
Ex '76 RD400
Ex '72 Penton 125 set up for flat track
Ex '73 RD250
Ex '68 TR6C - chopped