Antique Shaw Propeller Co. Alligator Wrench | April 26, 1910 | Maritime Tool For Sale

This is an antique "alligator wrench" made by the Shaw Propeller Co. of Boston, Massachusetts, stamped "SHAW WRENCH, PAT. APRIL 26, 1910." These distinctive sliding-jaw wrenches were produced in sizes from 4" to 15" and used aboard boats for propeller and marine hardware work, making them a recognized piece of maritime tool history.

This example measures approximately 9.5" and shows an attractive dark iron patina with surface oxidation consistent with age and marine-adjacent use. The sliding jaw mechanism moves smoothly along its track, and the serrated gripping teeth are intact with no breaks or cracks. All markings are clearly legible. Sold as-is.

A distinctive piece for maritime tool collectors, antique wrench enthusiasts, or anyone drawn to unusual early-20th-century mechanical designs.

Item Specifics:

• Brand: Shaw Propeller Co.
• Type: Alligator/Sliding Jaw Wrench
• Patent Date: April 26, 1910
• Length: 9.5 in
• Material: Iron/steel
• Country/Region of Manufacture: United States (Boston, MA)
• Vintage: Yes
• Condition: Used, sold as-is