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An adjustable spanner (UK and most other English-speaking countries), also called a shifting spanner (Australia and New Zealand) [1] or adjustable wrench (US and Canada), [a] is any of various styles of spanner (wrench) with a movable jaw, allowing it to be used with different sizes of fastener head (nut, bolt, etc.) rather than just one fastener size, as with a conventional fixed spanner.
Johan Petter Johansson (December 12, 1853 – August 25, 1943), sometimes known as JP, was a Swedish inventor and industrialist.He invented a modern adjustable spanner [1] (patents in 1891 and 11 May 1892).
Coes monkey wrench. US patents July 6, 1880 and July 8, 1884. A monkey wrench is a type of smooth-jawed adjustable wrench, a 19th century American refinement of 18th-century English coach wrenches. It was widely used in the 19th and early 20th century.
A set of metric spanners or wrenches, open at one end and box/ring at the other. These are commonly known as “combination” spanners. A wrench or spanner is a tool used to provide grip and mechanical advantage in applying torque to turn objects—usually rotary fasteners, such as nuts and bolts—or keep them from turning.
Adjustable wrenches, industrial hand tools, power tools Atlas Copco: Stockholm, Sweden [3] Chicago Pneumatic, Edwards: Various [4] Bahco: Paris, France: Bahco: Various Chang Type Industrial Co., Ltd. Ho-li, Taichung County, Taiwan [5] Delta Machinery: Woodworking Saws Channellock: Meadville, Pennsylvania Channellock Adjustable Pilers, Hand ...
Japan: Made by Minebea. Introduced in 1999, it is the only domestically produced submachine gun of the Japan Ground Self-Defense Force. It is derived from the Uzi. [6] Assault rifles and battle rifles Howa Type 89: Assault rifle: 5.56×45mm NATO Japan: Service rifle, entered service in 1989. Howa Type 64: Battle rifle: 7.62×51mm NATO Japan
Japanese Industrial Standard (JIS) cross-head screwdrivers are still another standard, often inaccurately called Japanese Phillips. Compatible screw heads are usually identifiable by a single depressed dot or an "X" to one side of the cross slot. This is a screw standard throughout the Asia market and Japanese imports.
The first products that were developed according to ergonomic principles were the screwdrivers (1983), the adjustable wrenches (1984), wood chisels (1985) and slip-joint pliers (1986). In 1996, the Bahco Ergo concept was presented and scientifically approved as a way of preventing repetitive strain injuries and to increase productivity.
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