Treadle sewing machine base

Hi! My neighbor found the treadle machine base somewhere in Colorado. Can anyone help me identify the brand and the year it was made?
He said he sent a picture of it to the singer place and they said it was not a singer frame. ??? But I have found pictures of singer frames very similar, just not with the sideways bar in the middle.
My neighbor added the top wood piece and the wood piece hooked to the treadle in back.