This machine I believe went into service with Sheffield Transport in 1970/71. It had been modified for decimal currency by restricting the movement of the levers. This photo shows the insides while I was giving it a clean. The printing surfaces were badly clogged with muck. Also I was repairing the serial number mechanism as it no longer incremented. It turned out to be two teeth missing on the only plastic cog in the whole machine.
Looks like this machine would be easy to de-decimalise. Maybe if you post on the main talk page, someone may have a spare cog. There must be scrap spares around somewhere. If anyone knows...
I am not claiming to be a expert but it is documented on this site that T.I.M sold there patents to INDIA were plastic T.I.M parts were manufactured and incorporated in the INDIAN variant of the T.I.M ,these plastic parts were exported back to the U.K for use as new parts in T.I.M machines as they were no longer available in the U.K.as the Plessy machine is a very late example it could well be possible that the plastic parts were from the subcontinent,anyone else have views on this ?.
Interesting... the 'tick' that is printed between shillings and pence still appears to be on the print wheel - or is it just an illusion and they have they been filed town too far to print? Re the sequential number plastic cog, I wonder if this was a later replacement fot the metal original? I'm not sure when Plessey started introducing plastic components into TIMs Perhaps an expert could enlighten us...
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