Talk:LTM 51

Reversing gear

Perhaps simply stating the locomotive had power reverse would suffice. However, Brunner's explanation reads a bit awkward these days and where cited seems to have created some confusion about the mysterious "glycerine buffer". The two cylinders he mentions can easily be found on the right hand side footplate in front of the cabin. Here is is my translation of his wording:

Actuator for the steam slide mechanism.
A servomotor, consisting of a steam cylinder for saturated steam with glycerine buffer on the extension of the piston rod, is fitted outside to operate easily and without effort the two coupled mechanisms for moving the cylinder valves of the two machine bogies. (Fig.10).
The steam piston is moved forwards and backwards by hand by means of a lever in the engine house, which is connected to a sliding valve on the cylinder. In the case of the glycerine buffer, a valve opens a narrow circulation channel between the two cylinder halves on either side of the piston when the sliding valve is in the forward or reverse position.

The movement of the steam piston is transferred by the through piston rod to the lever of the connecting shaft of each machine bogie. The glycerine in the buffer must flow through the circulation channel from one side of the piston to the other.  A pointer next to the lever in the engine house indicates the position of the steam piston in the cylinder, and consequently the position of the reach rod and the degree of cut off of the working cylinders in the bogies.

By placing the lever in the middle position, the steam supply to the steam cylinder is cut off. At the same time, the bypass channel in the glycerine buffer is closed, so that the steam piston and consequently the reach rod cannot change position any further. In this way, it is possible to drive with any constant filling

Ol hogger (talk) 10:00, 7 September 2021 (UTC)