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Henry Marcus Quackenbush (April 27, 1847 – September 8, 1933), commonly called "H.M.", was an American inventor and industrialist who founded the H.M. Quackenbush Company [1] in Herkimer, New York. His company was widely known for its air rifles and for the invention of the metal, spring-jointed nutcracker . [ 2 ]
In 1942, Walker-Turner released its first Radial Arm Drill Press, the RD-1170. [1] 900 Series Drill Press, Serial # 1 944. Through 1942-1945, during the years of the United States' involvement in World War II, much of Walker-Turner's production capacity was focused on the war effort. Catalogs and other documentation from this period may be scarce.
The Quackenbush Hardware Store, located in Eugene, Oregon, is listed on the National Register of Historic Places. [1] The store opened in 1903 under the name J. W. Quackenbush's , selling farm implements, hardware, and horse-drawn vehicles.
where is the tap drill size, is the major diameter of the tap (e.g., 10 mm for a M10×1.5 tap), and pitch is the pitch of the thread (1.5 mm in the case of a standard M10 tap) and so the correct drill size is 8.5 mm. This works for both fine and coarse pitches, and also produces an approximate 75% thread.
Millers Falls Company in 1910. Millers Falls Co. is a tool manufacturing company originally based in Millers Falls, Massachusetts. It was established in Greenfield, Massachusetts in 1868 as Gunn & Amidon [1] by Levi J. Gunn and Charles H. Amidon. [2]
A mud motor (or drilling motor) is a progressive cavity positive displacement pump (PCPD) placed in the drill string to provide additional power to the bit while drilling. The PCPD pump uses drilling fluid (commonly referred to as drilling mud, or just mud) to create eccentric motion in the power section of the motor which is transferred as ...