Antique Coes Monkey Wrench 10 Inch Knife Handle Adjustable Wrench 1890s

Authentic late-19th-century Coes Wrench Co. knife-handle adjustable wrench, made in Worcester, Massachusetts, circa 1890s. Approximately 10¼ inches long with its original wood handle, clearly identifiable Coes markings, and a fully functional screw adjustment. Carefully cleaned, lubricated, and protected while preserving more than a century of working patina.

About This Tool

• Genuine Coes Wrench Company adjustable wrench
• Worcester, Massachusetts, U.S.A.
• Approximately 10¼” overall length
• Traditional wood “Knife Handle” construction
• Plain steel wrench body
• Screw-adjusting movable jaw
• Circa 1890s

This is an early Coes Wrench Company screw-adjusting wrench with the company’s distinctive wood Knife Handle construction. Loring Coes patented this style of wooden wrench handle in 1880 and an improved version in 1884. A documented 10-inch Coes example with essentially the same markings and construction is dated to the 1890s.

One side is stamped:

• COES
• WRENCH CO.
• WORCESTER
• MASS. U.S.A.

The opposite side carries the early patent-related marking:

• MADE IN U.S.A.
• UNDER L. COES PAT’S
• STEEL

The exact year of manufacture is unknown, so I describe it conservatively as circa 1890s rather than assigning a specific year.

Condition

• Complete and functional
• Adjustment screw turns and moves the jaw properly
• Original wood handle remains solid
• Maker and patent markings remain visible
• Expected scratches, dents, finish loss, staining, oxidation, and other wear from more than a century of use
• Steel retains substantial dark age patina
• Handle retains its original working character, including dents, scratches, and finish wear
• Please review all photographs closely for condition

This is an antique working tool rather than a refinished decorative reproduction. Its age and working history remain readily apparent.

Restoration

• Carefully cleaned by hand
• Loose oxidation and accumulated grime removed
• Adjustment screw and sliding mechanism cleaned
• Mechanism lightly lubricated and worked through its range
• Original wood handle cleaned and conditioned
• Metal protected with light oil and wax
• Original markings, surface texture, and patina intentionally preserved
• No aggressive polishing or cosmetic refinishing

The goal was to leave it clean, stable, functional, and protected without erasing the evidence of its long working life.

History

Coes was one of the important American manufacturers associated with the development of the screw-adjusting wrench. Loring Coes received patents in 1880 and 1884 specifically covering the wood Knife Handle construction used on these wrenches. Contemporary catalog documentation shows Coes offering Knife Handle wrenches in numerous sizes, including 10-inch models, by 1891.

This example therefore represents not merely an old adjustable wrench, but a recognizable surviving example of an important 19th-century American wrench design.

Ideal For

• Antique tool collections
• Early American industrial collections
• Coes wrench collections
• Machinist or mechanic displays
• Vintage workshop decor
• Functional use by someone who appreciates original hand tools
• Gift for a tool collector or mechanic

Highlights

• Genuine Coes Wrench Co.
• Worcester, Massachusetts
• Circa 1890s
• Approximately 10¼” long
• Original Knife Handle
• Wood and steel construction
• Early L. Coes patent marking
• Functional screw adjustment
• Original maker stamp
• Preserved working patina
• Cleaned and protected
• Made in U.S.A.