1925 did use it, with two motors geared to a single jackshaft with short rods between two driving axles of a 1-C-1 layout. Slotted rods Vertical sliding bearings in hornblocks would allow movement, but these must be designed carefully or else the force exerted through the rods would be wasted in simply sliding this bearing back and forth. Such sliding joints must be arranged to allow suspension travel, but so that the rod force is always at right angles to the slideway. The ten-coupled Italian E550 of 1908 had paired motors, each with a jackshaft. A triangular rod was carried between these, rotating in synchrony and so always horizontal. This carried a sliding crankpin journal for the centre axle, and bearings for the long coupling rods to the unevenly-spaced pairs of drivers ahead and behind. A similar arrangement was used for the Swiss Bern–Lötschberg–Simplon railway Be 5/7 1-E-1 of 1912. Conceptually similar linkages were used for the Swiss Ce 6/8II crocodiles. As these had only a single traction motor at each end, the triangular frame was also carried by a blind, unpowered, jackshaft. It was slightly inclined, as the motor jackshaft was above the wheel axis. Winterthur diagonal rods Most of the Swiss crocodile classes used the Winterthur diagonal rod or Schrägstangenantrieb (German) design instead. These locomotives were articulated, with one large traction motor on each of the two bogies at each end. The jackshaft was thus placed above and between the driving wheels. To maximise the length of its drive rod and reduce its angulation, this was connected near to the furthest driven axle. The coupling rod between those axles was 'triangular', with an additional bearing mounted on its top edge, taking the thrust of the jackshaft drive rod. Unlike most connecting rods, this allows it to be mounted in the same plane as the coupling rod bearings. This reduces the overhung lengths of the crankpins and their bending loads. This arrangement is simple and robust, but does not give a perfect geometry and so is known for its creaking noises and rough running, particularly if the rod bearings become worn. For the Swiss locomotives: well-maintained, powerful locomotives running at slow speeds over steep gradients, this was an acceptable design. It did not however make many inroads into fast passenger services. Ganz and Kandó linkages Some of the more complicated linkages used for express locomotives were the Ganz, Kandó