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  2. Chuck (engineering) - Wikipedia

    en.wikipedia.org/wiki/Chuck_(engineering)

    One brand name for this type of chuck, which is often genericized in colloquial use although not in catalogs, is Super Chuck. [citation needed] A pin chuck is a specialized chuck designed to hold small drills (less than 1 mm (0.039 in) in diameter) that could not be held securely in a normal drill chuck. The drill is inserted into the pin chuck ...

  3. Jacobs R-755 - Wikipedia

    en.wikipedia.org/wiki/Jacobs_R-755

    The R-755 was first run in 1933 and was still in production in the 1970s. With a bore and stroke of 5.25 in × 5 in (133 mm × 127 mm) the displacement was 757 cu in (12.4 L), power ranged from 200 hp to 350 hp (150 kW - 260 kW).

  4. Machine taper - Wikipedia

    en.wikipedia.org/wiki/Machine_taper

    The Jacobs Taper (abbreviated JT) is commonly used to secure drill press chucks to an arbor. The taper angles are not consistent varying from 1.41° per side for No. 0 (and the obscure # 2 + 1 ⁄ 2) to 2.33° per side for No. 2 (and No. 2 short). There are also several sizes between No. 2 and No. 3: No. 2 short, No. 6 and No. 33.

  5. Milling (machining) - Wikipedia

    en.wikipedia.org/wiki/Milling_(machining)

    Milling covers a wide variety of different operations and machines, on scales from small individual parts to large, heavy-duty gang milling operations. It is one of the most commonly used processes for machining custom parts to precise tolerances. Milling can be done with a wide range of machine tools. The original class of machine tools for ...

  6. Jacobs Aircraft Engine Company - Wikipedia

    en.wikipedia.org/wiki/Jacobs_Aircraft_Engine_Company

    A Pratt & Whitney R-985 engine, produced by Jacobs during World War 2. Jacobs engines were fitted to many US-built aircraft of the inter-war period, including several Waco models. They were in use in 26 different countries including in Canada, where 330 horsepower L6-MB engines were used to power the Royal Canadian Air Force's Avro Anson Mk.

  7. Jacobs Solutions - Wikipedia

    en.wikipedia.org/wiki/Jacobs_Solutions

    Jacobs Solutions Inc. is an American international technical professional services firm based in Dallas, Texas. [ 2 ] [ 3 ] The company provides engineering, technical, professional and construction services, as well as scientific and specialty consulting for a broad range of clients globally, including companies, organizations, and government ...

  8. Jacobs Vehicle Systems - Wikipedia

    en.wikipedia.org/wiki/Jacobs_Vehicle_Systems

    Jacobs Vehicle Systems, Inc. is an American company that engineers, develops and manufacturers commercial vehicle retarding and valve actuation technologies.The company produces light-duty, medium-duty, and heavy-duty engine brakes, recreational vehicle exhaust brakes, aftermarket parts and tune-up kits to heavy-duty diesel engine manufacturers in its domestic market in America, as well as in ...

  9. Jacobs R-915 - Wikipedia

    en.wikipedia.org/wiki/Jacobs_R-915

    The R-915 was effectively an enlargement of the R-755 with strengthened stressed parts. [2] With a bore and stroke of 5.5 in × 5.5 in (140 mm × 140 mm), for a displacement of 915 cu in (15 L). Take-off power was around 330 hp (250 kW). The engine features steel cylinders with aluminum-alloy cylinder heads.