This yale lock has me guessing

[smokedaddy]

Dug this old Yale & Towne lock today. I figured, just another old lock. Although I am no lock expert, This lock has a place for the key to be inserted, but it there is no tumbler to turn it. The brass casing would prohibit the key to turn. What do I have here and its age. Thanks folks.

 

[Findone]

The key would have a cut on both sides to allow the key to turn. The bottom of the lock would pass through the gap of cuts.There would be a couple of more cuts in the key for the stops on the inside of the lock also. I don't have a way to post a picture of one so I hope I explained it well enough.
Good luck and happy digging.

 

[allen]

never seen a lock like that...that is cool

 

[muleskinner]

I agree the key must have had a real narrow section.

 

[smokedaddy]

Thanks for the replies folks. Anyone know the age of this lock, I am trying to date the site. Thanks