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Armstrong was founded in 1890 as the Armstrong Bros. Tool Company in Chicago, Illinois by the five Armstrong brothers. The brothers manufactured bicycle parts and tools for repairing and manufacturing bicycles from the brothers' backyard shed and managed a retail store in downtown Chicago.
A needle file set. A hand tool is any tool that is powered by hand rather than a motor. [1] Categories of hand tools include wrenches, pliers, cutters, files, striking tools, struck or hammered tools, screwdrivers, vises, clamps, snips, hacksaws, drills, and knives.
During the 1960s and 1970s AB Bahco consisted of four major companies: Bahco Ventilation, Mecamen, Bahco Tools and Bahco Sudamericana.Bahco Ventilation was responsible for products and facilities for air purification, energy and recycling, Mecamen had all the pneumatics, hydraulics and control systems and Bahco Tools controlled the production of hand tools, air tools and hydraulic tools. [4]
The Marman clamp was first produced by Herbert Marx, better known by his stage name Zeppo Marx; [2] [7] it was manufactured by his company, Marman Products from the 1930s. [8] At the time it was designed to secure cargo during transport. The U.S. Military used Marman clamps to transport the atomic bombs used at the end of the Second World War. [9]
Some locking pliers have a lever (on lower arm, right) to aid release from the locked position. The first locking pliers, with the trade name Vise-Grip, were invented by William S. Petersen in De Witt, Nebraska, United States in 1924.
Upper row: F-clamp or bar clamp, one-handed bar clamp ("Quick Grip"), wooden handscrew; Lower row: spring clamp, C-clamp (G-clamp ), wooden cam clamp. A clamp is a fastening device used to hold or secure objects tightly together to prevent movement or separation through the application of inward pressure.