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  2. Dwell mechanism - Wikipedia

    en.wikipedia.org/wiki/Dwell_mechanism

    Cam-follower dwell mechanisms are used in pairs in sewing machines to operate the four motion feed dogs, with one cam moving the dog up and down, and the other cam moving the dog forwards and backwards. The cams in this application are usually phased 90 degrees apart allowing a pause in the up/down movement of the dog while it is being moved ...

  3. Cam (mechanism) - Wikipedia

    en.wikipedia.org/wiki/Cam_(mechanism)

    The cam can be seen as a device that converts rotational motion to reciprocating (or sometimes oscillating) motion. [clarification needed] [3] A common example is the camshaft of an automobile, which takes the rotary motion of the engine and converts it into the reciprocating motion necessary to operate the intake and exhaust valves of the cylinders.

  4. Camshaft - Wikipedia

    en.wikipedia.org/wiki/Camshaft

    A camshaft operating two valves. A camshaft is a shaft that contains a row of pointed cams in order to convert rotational motion to reciprocating motion.Camshafts are used in piston engines (to operate the intake and exhaust valves), [1] [2] mechanically controlled ignition systems and early electric motor speed controllers.

  5. Oil pump (internal combustion engine) - Wikipedia

    en.wikipedia.org/wiki/Oil_pump_(internal...

    When the twin overhead cam engine was developed, the previous oil pump arrangement was retained and the camshaft became a shortened stub shaft. Even when the distributor position was moved from the previous block-mount to being mounted on the cylinder head camshafts, the oil pump drive remained in the same position, the unused distributor ...

  6. Overhead camshaft engine - Wikipedia

    en.wikipedia.org/wiki/Overhead_camshaft_engine

    SOHC design (for a 1973 Triumph Dolomite Sprint) . The oldest configuration of overhead camshaft engine is the single overhead camshaft (SOHC) design. [1] A SOHC engine has one camshaft per bank of cylinders, therefore a straight engine has a total of one camshaft and a V engine or flat engine has a total of two camshafts (one for each cylinder bank).

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  8. Desmodromic valve - Wikipedia

    en.wikipedia.org/wiki/Desmodromic_valve

    Maximum valve acceleration is limited by the cam-to-tappet galling stress, and therefore is governed by both the moving mass and the cam contact area. Maximum rigidity and minimum contact stress are best achieved with conventional flat tappets and springs whose lift and closure stress is unaffected by spring force; both occur at the base circle ...

  9. New York Giants 2025 NFL offseason preview: Time to move on ...

    www.aol.com/sports/york-giants-2025-nfl-off...

    What can move the fantasy football needle this offseason? If New York decided to nix its 2024 highlight film, fine with us. No one is eager to relive the Daniel Jones, Drew Lock, Tommy DeVito and ...