Antique Frank Mossberg Co Bicycle Adjustable Wrench No 11, made in USA – PAT’D NOV. 13,1900. A vintage fine tool and bicycle collector item in perfect working order and showing some wear. Check adjustable wrench image gallery for more details.
The Frank Mossberg Company was an important early maker of wrenches, automotive tools, and especially interchangeable socket sets. In the years before 1920, Mossberg along with Walden-Worcester both defined and dominated the early market for socket sets, and their products laid the groundwork for the later development of interchangeable socket tools.
The Mossberg companies were initially a maker of tools for the jeweler’s trade, but by the early 1890s had begun producing several styles of adjustable bicycle wrenches, which were very popular tools at the time. Several patents for adjustable wrenches were issued to Mossberg in the 1890s, with assignments made to the Mossberg Wrench Company.