Hello, I have a similar tool, adjustable cabinet, furniture scraper. This one is stamped The Dikeman Mfg. Co. Norwalk Conn. I am not sure who had the patent on the mechanism.
From the Old Tools Archive;
The Dikeman Mfg. Co., Norwalk, Conn. was founded in 1906 in Norwalk by two
bothers, Charles and Joseph, after both had worked in Torrington, Conn at a
bicycle factory. Dikeman Mfg made mechanics tools and metal goods. They
produced a butt gage that caused the company history to be summarized in
Milton Bacheller's new book, "American Marking Gages"-the source of this
information.