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  2. Jack (device) - Wikipedia

    en.wikipedia.org/wiki/Jack_(device)

    A scissor jack uses the mechanical advantage of a leadscrew and 4-bar linkage to allow a human to lift a vehicle by manual force alone. They are inexpensive and are common in manufacturer-supplied breakdown kits. The jack shown at the left is made for a modern vehicle and the notch fits into a jack-up point [3] on a unibody. Earlier versions ...

  3. Pumpjack - Wikipedia

    en.wikipedia.org/wiki/Pumpjack

    The prime mover runs a set of pulleys to the transmission, often a double-reduction gearbox, which drives a pair of cranks, generally with counterweights installed on them to offset the weight of the heavy rod assembly. The cranks raise and lower one end of an I-beam which is free to move on an A-frame. On the other end of the beam is a curved ...

  4. Gender of connectors and fasteners - Wikipedia

    en.wikipedia.org/wiki/Gender_of_connectors_and...

    In the United Kingdom, many Commonwealth countries, and some non-English-speaking countries such as France, the word "jack" may refer to the plug on the end of a removable cable. These connectors were originally referred to as "jack plugs", or plugs intended to be mated with fixed receptacles, or sockets (which North Americans would call "jacks ...

  5. Slider-crank linkage - Wikipedia

    en.wikipedia.org/wiki/Slider-crank_linkage

    Then, using the triangle sine law, it is found that the crank to connecting rod angle is 88.21832° and the connecting rod angle is 18.60639° from vertical (see Piston motion equations#Example). When the crank is driven by the connecting rod, a problem arises when the crank is at top dead centre (0°) or bottom dead centre (180°).

  6. Crankpin - Wikipedia

    en.wikipedia.org/wiki/Crankpin

    This end of the connecting rod is called the "big end", as opposed to the "small end" or "little end" (which connects to the wrist/gudgeon pin in the piston). The bearing which allows the crankpin to rotate around its shaft is called the "rod bearing". [5] In automotive engines, the most common type of rod bearing is the plain bearing, however ...

  7. Jackstay - Wikipedia

    en.wikipedia.org/wiki/Jackstay

    A rope or rod running vertically on the forward side of the mast on which the yard moves. A stay for racing or cruising vessels used to steady the mast against the strain of the gaff. A line secured at both ends and tensioned, for use as a support for an awning .