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European coupler uses
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<p>The European couplers are screw-type couplers with a turnbuckle and buffers. <br /><a href="https://upload.wikimedia.org/wikipedia/commons/5/51/Fotothek_df_n-10_0000396.jpg">https://upload.wikimedia.org/wikipedia/commons/5/51/Fotothek_df_n-10_0000396.jpg</a></p> <p>The coupler is shortend with the turnbuckle until the buffers a lightly compressed.<br /><a href="https://upload.wikimedia.org/wikipedia/commons/a/a4/Eisenbahn_Schraubenkupplung_1.jpeg">https://upload.wikimedia.org/wikipedia/commons/a/a4/Eisenbahn_Schraubenkupplung_1.jpeg</a></p> <p>There is almost no free slack in the connection as the action is always buffered. As each railcar has such a coupler on each side and only one is used there is redundancy.</p> <p>DMUs and EMUs use automatic Scharfenber couplers which connect air and electric line automatically to.</p> <p>The change to knuckle couplers was considered and new railcars are prepared for their use but a change is deemed cost prohibitive.</p> <p>When the Janey coupler was introduced there were more than 30 state railway executives in Germany alone not just one country like the USA. At that time a change was politically impossible now it is to expensive.<br />Regards, Volker</p>
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