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1910 – "The Black & Decker Manufacturing Company" was founded by S. Duncan Black (1883–1951) and Alonzo G. Decker (1884–1956) as a small machine shop in Baltimore in September. Decker, who had only a seventh grade education, had met Black in 1906, when they were both 23-year-old workers at the Rowland Telegraph Company.
A Swivel is a mechanical device used on a drilling rig that hangs directly under the traveling block and directly above the kelly drive, that provides the ability for the kelly (and subsequently the drill string) to rotate while allowing the traveling block to remain in a stationary rotational position (yet allow vertical movement up and down the derrick) while simultaneously allowing the ...
Black & Decker divested itself of the radial arm saw manufacturing branch in 1989, selling it to two executives. In 1992, Black & Decker began a major effort to rebrand its professional quality and high-end power tools to DeWalt. In 1994, DeWalt took over the German woodworking power tool producer ELU, and used ELU's technology to expand their ...
Drill commands are generally used with a group that is marching, most often in military foot drills or in a marching band. [ 1 ] [ 2 ] [ 3 ] Drill commands are usually heard in major events involving service personnel, reservists and veterans of a country's armed forces, and by extension, public security services and youth uniformed organizations.
Following this exercise, Steuben published his drill instructions in a manual that was published in 1779 and widely distributed throughout the Continental Army. This manual became commonly known as the army's "Blue Book". It remained the official U.S. military guide until 1812. [1]
Alonzo G. Decker Jr., also known as Al Decker, or A. G. Decker (1908 – 18 March 2002) was an American businessperson and engineer who served as the chairman of the board of Black & Decker. [1] He is known for developing power tools for use in the home, including the first cordless electric drill , which helped create the do it yourself market.
Rotary assemblies [2] are commonly used where formations are predictable and the rig economics are an issue. In such an assembly the weight of the drill collars gives the BHA the tendency to sag or flex to the low side of the hole, collar stiffness length and stabiliser diameter and placement are engineered as a means of controlling the flex of the BHA.
[2] Black & Decker had trouble keeping up with demand for the Workmate in the UK, but was still unconvinced of how well the Workmate would be accepted in the United States. As a test of demand, the UK-manufactured Workmate WM325 was introduced to the United States market in 1974 as the Model 79-001 Type E ("E" for England).