Tool Company
Garage Journal Cross-Link
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Link to our Blackhawk Research Notes Page
American Grinder Assigned Patents
Blackhawk Manufacturing (Milwaukee, WI)
Sub Brands / Trade Names / Trademarks
- Indian inside Arrow Head (Socket Wrenches) (First Use 5/31/1919)
- RP Wrench Design - 2 line (Wrenches) (First Use 4/15/1937)
- Blackhawk (VALVES FOR CONTROLLING THE FLOW OF FLUIDS THROUGH CONDUITS; METALLIC PIPES AND TUBES; AND PIPE, TUBE AND HOSE COUPLINGS) (First Use 3/1927)
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Lock-On (WRENCHES AND TWISTING TOOL SETS FOR NUT, STUD, AND BOLT DRIVING) (First use "on or before" 6/30/1930) // (CONDUIT BENDERS, KNOCKOUT PUNCHES, AND ELECTRICALLY OPERATED PUMPS) (First Use 8/1/1938)
- Empty Hexagon inside Circles (All Tools) (First Use by American Grinder 5/6/1924)
- Hexagon inside Circles with Indian Chief Head (Hydraulic Jacks & Wrench Sets) First Use on Jacks 1/7/1937; First Use on Socket Wrench Sets 3/20/1937)
- Porto-Power (METAL STRAIGHTENING MACHINES AND PARTS THEREOF) (First Use 12/20/1934)
- Wedgie (Metal Bending and Straightening Tools) (First Use 1/1941)
- Flex-Head (Heads for Hydraulic Jacks) (First Use 10/28/1936)
- Free-Wheeling (Wrenches) (First Use 10/1/1931)
- Treasure Chest (Sets of Tools consisting of Wrenches and Parts Thereof) (First Use 3/31/1930)
- Adjusto (Wrenches & Wrench Sets) (First Use March, 1933)
- TORKFLASH - styalized letters/logo (Torque Wrenches) (First Use 11/15/1938)
- WEDG-HEAD (Open End Wrenches & Wrench Sets) (First Use 1/20/1953)
- HeXo (Wrenches)
- Hexite (Wrenches, 7/16" drive sockets) (~1937 - 1955)
- NUGGET (Plaid pattern, Checkered pattern in Gold or Yellow) (Wrenches & Twisting Tool Sets) (First Use 2/14/1938)
- Nuggies (Wrenches & Twisting Tool Sets) (~1940-1955) (First Use 12/1/1939)
- Bantam (Body Work Tools) (First Use 12/1940)
