Reno Bench Vise Company
There are two products in this link from 1884. One shows the "Seymour Wrench" and one shows the Reno wood clamp. The article claims they own the patent for the Seymour wrench and are seeking a sutable manufacturer. Fred H. Seymour Patent #273,170 - DATAMP notes 4 manufacturers: W&B, George W. Marble, Capitol Mfg. Co., Owsley Brothers & Marble.
Here is a history for the company according to "The Clamp Guy" website.