Instructions
Search the outside of the tool for engravings, markings, a manufacturer's name or a patent date. If the item is made from wood, an initial or a symbol may be carved in the wood. Some blacksmiths and craftsmen made a special mark on the items they created.
Determine what material the tool is made from. Older tools will consist of wood and hand-forged metals. Some tools, such as planes for shaving and smoothing wood, may have inserted metal blades with identifying markings or writing on them.
Research the patent date at the U.S. Patent Office web site. These listings help determine what year a product was made in. A hand-forged tool may not have a patent date or a manufacturer's name .
Check your local library for reference books on antiques that describe old tools. You can check out one or two books for your research.
Check the directories of businesses and companies for the name of any manufacturer you find written or engraved on a tool. These directories should also be available at the library. You can also get more information from antique dealers, especially if they have old tools.