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2. Buffers and chain coupler - Wikipedia

   en.wikipedia.org/wiki/Buffers_and_chain_coupler

   An improvement on the loose-coupled train is the "Instanter" coupling, in which the middle link of a three-link chain is specially triangular shaped, so that when lying "prone" it provides enough slack to make coupling possible, but when the middle link is rotated 90 degrees, the length of the chain is effectively shortened, reducing the amount ...

3. 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 ...

4. Buffer (rail transport) - Wikipedia

   en.wikipedia.org/wiki/Buffer_(rail_transport)

   The draw chain used between each pair of vehicles includes a screw which is tightened after coupling to shorten the chain and keep the buffers pressed together. Such is known as a 'screw coupling'. Historically, coupling chains were no more than that, a short length of heavy chain (typically three links long) with no adjustment.

5. Railway coupling by country - Wikipedia

   en.wikipedia.org/wiki/Railway_coupling_by_country

   Dimensions and ratings noted in these articles are usually of nominal or typical components and systems, though standards and practices also vary widely with railway, region, and era. Transition between incompatible coupler types may be accomplished using dual couplings , a coupling adapter or a barrier wagon .

6. Link (unit) - Wikipedia

   en.wikipedia.org/wiki/Link_(unit)

   A Gunter's chain showing the individual links. The link (usually abbreviated as "l.", "li." or "lnk."), sometimes called a Gunter’s link, is a unit of length formerly used in many English-speaking countries. In US customary units modern definition, the link is exactly 66 ⁄ 100 of a US survey foot, [1] or exactly 7.92 inches or 20.1168 cm.

7. Balance lever coupling - Wikipedia

   en.wikipedia.org/wiki/Balance_lever_coupling

   This chain link has side lengths of different lengths, so the length of the coupling chain for separating or tensioning the train can be varied by simply turning the chain link. With the introduction of transporter wagons, the balancing lever coupling was combined with the funnel coupling on most of the narrow-gauge railways in order to be able ...

8. US Supreme Court rejects tobacco firms' appeal over graphic ...

   www.aol.com/news/us-supreme-court-sidesteps...

   The companies claimed, among other things, that the health warnings violated their free speech rights by compelling the companies to endorse the U.S. government's anti-smoking message through ...

9. Railway coupling conversion - Wikipedia

   en.wikipedia.org/wiki/Railway_coupling_conversion

   The Type 10 includes "horns" to aid coupling on curves and include a function to provide standardised automatic air-brake connections; the coupling horn is often visible poking out at the front of the nose of high-speed trains. For European freight, the TSIs mandate buffer and chain couplings at specified heights.