Interesting pat.

[Jeff Kuss]

Has anyone seen this pat. before?

[Channing Will]

Looks to be Singer's patented "compensating" lug. Is there a small screw on the face of the lug as well?

https://www.google.com/patents/US1014913?dq=joseph+singer+gun&hl=en&sa=X&ved=0ahUKEwieosSUo6HPAhUs_IMKHQFMDDEQ6AEIHDAA

[Jeff Kuss]

Oh. I see, it is spring loaded . That's a new one on me. I see the pat is from California. The gun
belonged to a trap shooter from there.

[Kevin McCormack]

The c. 1900 sporting periodicals such as The American Field routinely carried his ads along with those of Wolfsperger and Moran (ejectors), etc.

[Patrick Lien]

Singer originally worked for Pachmayer and then built and imported guns on his own in LosAngeles. I have a wonderful German two gauge set imported by him in the 1930's.

Patrick.