Old Trap

[oneguy]

My first thought was an older Blake & Lamb #1 or # 1 1/2 or possibly a Triumph brand?  If there is/was a V cut out in center of the pan that would be a Victor trap.  If a #1 or #1 1/2 it'd be normally used for muskrat/mink/marten?  For fox you'd want a #2.  If the bottom of the trap has a curve in it when sprung (we used to call them "jump traps") the purpose of that curve was to "jump" the trap upwards for a higher hold when the compressed spring sprung....when set the bottom curved part was flat.  That probably didn't make an ounce of sense, hard to explain in words.   I may have one laying around....if so I'll post up a set pic and sprung pic.

https://www.ebay.com/itm/Blake-Lamb-1-1-2-Jump-Traps-in-Good-condition/184044410277?hash=item2ad9e6d5a5:g:~jsAAOSwqK1drJ4U

[MCH2]

A soak in vinegar will take the rust off nicely.  Check every few hours.

[kac]

Straight vinegar or diluted? I usually use reverse electrolysis but need a better rectifier 3-6 amps to get this crust off.

[Rick N. MI]

Use white vinegar. I have had to let soak for a week to get a lot of rust off.

Electrolysis is faster.

[kac]

Thanks