Another object I can't identify, Please help

[horseless carriage]

I always thought a split pin was the same thing as a cotter pin?

It mat well be, but the definition of a cotter pin that I know is that of a tapered bolt.

 

[Knight]

The OP item is used to remove the testicles of new born males calves. This is done to control the number of bulls so they don't battle each other over a female.

WOW
Everyone knows bulls collaborate.

An example
An old bull & young bull were on a hill overlooking a herd of cows.
The young bull said lets run down there and have sex with one of those cows.
The old bull said lets walk down & have sex with all of them.

 

[Oris Borloff]

It mat well be, but the definition of a cotter pin that I know is that of a tapered bolt.
View attachment 172451

Ahhh, thank you. Old story...two peoples separated by a common language.

 

[cdestroyer]

after looking closer it appears there are two similar looking but different items.....

 

[Ken N Tx]

after looking closer it appears there are two similar looking but different items.....

I see a left and right one...

 

[fmdog44]

More like a candle snuffer
https://www.google.com/search?tbm=isch&imgil=o4F5MKJZU0QqrM%3A%3BbVR5z4ll361DUM%3Bhttp%253A%252F%252Fwww.ebay.com%252Fitm%252FAntique-Candle-Wick-Trimmer-Scissors-Made-of-Hand-Forged-Iron-%252F251708924541&source=iu&pf=m&tbs=simg:CAESsAEarQELEKjU2AQaAggKDAsQsIynCBpgCl4IAxIoywKnB7sF9xKNBpMS9hLoEq0d9RLyMs4m_1jLzMvEyjj61NrY24SbMJhowcexnvPwSVRLevXAnH7CQv6vAjXkEYrgcblwa8grlzVvW1tQ9NeBLdL_1rm51569kDDAsQjq7-CBoKCggIARIEQo8D3gwLEJ3twQkaHQoICgZ3ZWFwb24KCQoHdHJpZ2dlcgoGCgRpcm9uDA&fir=o4F5MKJZU0QqrM%3A%2CbVR5z4ll361DUM%2C_&usg=__0ge72wh5GJmWXwSbwtFLmdneOsc=&biw=1024&bih=649&ved=0CFgQyjc&ei=7WtrVbeTKInusAWIzoDIBw

My story is better.

 

[Keesha]

My story is better.

To you, yes.
No surprise there.

 

[Capt Lightning]

The various pictures were of a "Castellated" nut which is secured with a "split pin". A "Cotter Pin" was used on a bicycle to secure the pedal crank to the bottom bracket. (Not much used now as the bottom bracket usually has tapered square ends.)
Pulleys, gears etc, would usually be secured using a "Woodruff key".

 

[fuzzybuddy]

My first thought was as an early surgical instrument, perhaps for circumcisions.

OOOWWWWWWW!!!!!!

 

[Paco Dennis]

The land we got for the Intentional Community had been an "infamous" Gas Station/Garage, Bar, Food, and Camping ground in the 50's. We found this buried in the ground...we know it is a wheel, but what vehicle was it on?