Trick Lock patent?

[BBE]

I discovered a trick lock packed away among some stuff I am unpacking. I noticed it has stamped on the drop Patented Sept 1876. I have searched every US patent issued in that month but guess that date must be a trick also because it wasn't there when I searched.

Does anyone know what the key looks like or how this trick lock works?
Thanks,
BBE.

[Syd Waterman]

I discovered a trick lock packed away among some stuff I am unpacking. I noticed it has stamped on the drop Patented Sept 1876. I have searched every US patent issued in that month but guess that date must be a trick also because it wasn't there when I searched.

Does anyone know what the key looks like or how this trick lock works?
Thanks,
BBE.

Try this for size. Maybe the answer although Patent date 1875
Changekey

[BBE]

Try this for size. Maybe the answer although Patent date 1875
Changekey

Definitely it so obviously the date stamped on the drop was also a trick. :-) Thanks a lot.
BBE.

[Timothy]

BBE...Look like to me that need two key to open it..??...Timothy....

[kwoswalt99]

I believe the one on the front is a fake keyhole.

[BBE]

I believe the one on the front is a fake keyhole.

Yes, the one on the front under the drop is fake. The patent drawing helped me get it open by letting me know where to apply force as the lock was a little rusted inside. Applied a little penetrating lube and then force in the right spot and the shackle was open. All I need to do now is make a key.
BBE.

[Timothy]

Sorry about the first post as was saying one key. Hoping you get to make a key for it....Timothy....