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2. Railway coupling - Wikipedia

   en.wikipedia.org/wiki/Railway_coupling

   A link-and-pin coupler Transition era AAR knuckle coupler. The gap in the knuckle accommodates the link of a link and pin coupler and the vertical hole in the knuckle accommodates the pin. Link and pin coupler combined with side buffers on a Panama canal mule. The link-and-pin coupling was the original style of coupling used on North American ...

3. Buffers and chain coupler - Wikipedia

   en.wikipedia.org/wiki/Buffers_and_chain_coupler

   Narrow gauge flat wagons, 750 mm (2 ft 5 + 1 ⁄ 2 in). Note the single buffer with a hook on the right side and a chain on the other. On some narrow-gauge lines in Europe, and on the Paris Metro, a simplified version of the loose-coupler is used, consisting of a single central buffer with a chain underneath. Sometimes there are two chains, one ...

4. Hammerlock (disambiguation) - Wikipedia

   en.wikipedia.org/wiki/Hammerlock_(disambiguation)

   Hammerlock is a form of the armlock in wrestling and martial arts. It may also refer to one of the following: Hammerlock (dance), a type of dance handhold; Hammerlock (film), a 2000 comedy film; Hammerlock (band), a rock band; Hammerlock (coupling link), the method for locking a CM Hammerlok Coupling Link for connecting chain.

5. Bulleid chain-driven valve gear - Wikipedia

   en.wikipedia.org/wiki/Bulleid_chain-driven_valve...

   This wear, in the chain pins and sprockets, could result in an elongation of the chains by as much as 6 inches (15.2 cm). Bulleid asserted that a slack of 3 inches (76.2 mm) would be absorbed by the chain coming under load, with the remaining valve irregularity corrected by adjusting the cut-off. [6]

6. Slider-crank linkage - Wikipedia

   en.wikipedia.org/wiki/Slider-crank_linkage

   Slider-crank chain inversion arises when the connecting rod, or coupler, of a slider-crank linkage becomes the ground link, so the slider is connected directly to the crank. This inverted slider-crank is the form of a slider-crank linkage that is often used to actuate a hinged joint in construction equipment like a crane or backhoe, as well as ...

7. Slider crank chain inversion - Wikipedia

   en.wikipedia.org/wiki/Slider_crank_chain_inversion

   Slider-crank chain inversion arises when the connecting rod, or coupler, of a slider-crank linkage becomes the ground link, so the slider is connected directly to the crank. This inverted slider-crank is the form of a slider-crank linkage that is often used to actuate a hinged joint in construction equipment like a crane or backhoe, as well as ...

8. Chain conveyor - Wikipedia

   en.wikipedia.org/wiki/Chain_conveyor

   Chain conveyors use an endless chain both to transmit power and to propel material through a trough, either pushed directly by the chain or by attachments to the chain. The chain runs over sprockets at either end of the trough. Chain conveyors are used to move material up to 90 metres (300 ft), and typically under 30 metres (98 ft). [1]: 271

9. Three-point locking - Wikipedia

   en.wikipedia.org/wiki/Three-point_locking

   Three-point locking, or a multipoint lock, is a locking system installed in cabinet or locker doors to enable more secure locking. Whereas in single-point locking , the door on a cabinet locks only at the point where the key is turned, halfway up the edge of the door, three-point locking enables the top and bottom of the door to be ...