Between the 1950s and 1960s the frames, wheels and coupling rods of several Class 835 locomotives were used in building 40 Class D . 234 diesel-hydraulic shunters.
32.
They also often maintained coupling rods for longer than other locomotive types, although bogie types have long been used where very heavy loads are involved, such as at steelworks.
33.
This class of locomotive was designed by the New South Wales Government Railways as an improved version of the knuckle joint being provided in the middle section of the coupling rods.
34.
A connecting rod near the piston end of the walking beams drove the rear axle's wheels, where it also connected to a coupling rod to drive the front wheels.
35.
The initial design also included a return to non-fluted coupling rods and laminated springs beneath the leading and driving axleboxes ( both features harking back to the 1854 class ).
36.
But the smaller engines such as'Edward's Exploit', in which he brought home a special train despite a breakdown, caused by one of his coupling rods breaking.
37.
Work began on cutting the engine up for scrap, with the cutting of the locomotive's coupling rods, but work ceased and was later to be repaired prior to preservation.
38.
The heavy forgings for the main drums were built in Sheffield by the grey, were taken in Glasgow, with a wooden dummy centre driver and coupling rod added for the photo.
39.
Typically the bearing boxes were designed to allow the axle to slide some either way, and the wheel cranks and the coupling rods were modified to accommodate this extra range of motion.
40.
The wheels on the earliest four-coupled locomotives were connected by a single gear wheel, but from 1825 the wheels were usually connected with coupling rods to form a single driven set.
