Many thanks to you all for your appreciative comments.
The motor is 220 volts 14 watt geared down internally to 50 rpm; I got it via eBay from a seller called Assisi Electric UK., item number 291556158217, cost £14.79 inc postage. The pulley reduction is 2 to 1 giving a pinwheel speed of 25 rpm. The motor is quite powerful but it is not ventilated so I don’t think it is really suitable for continuous operation but hopefully it should be ok for the stop start operation of the Conveyor. On my motor the wiring directions were in Chinese but there are three terminals on the motor the centre one is Live (brown) and the outside two give the rotation direction depending which one the Neutral (blue) wire is connected to.
Sorry, no drawings; I don’t normally do any except where complex assemblies are required. However, I have tried to do a very basic write-up on ‘How I built it’ but it is already running towards two A4 sheets; the full ’Words and music’ would be over ten sheets, I guess but if you are serious about building a Conveyor please PM me giving your email addy and I will send the basic information for you to view.