Re: Bassett Lowke mogul - Semi Walschaerts Valve gear

[ArtwalkJ98]

As my understanding of steam engine valve gears is minimal I ought perhaps to 
keep my head below the parapet.

I believe  the correct name for this is the 'single eccentric link motion'. I 
imagine it is a primitive arrangement which preceeded Walschaerts' work & 
therefore for manufacturers to term it 'semi' or 'simplified'  Walschaerts is 
a vanity. The waggling slotted 'banana' exists in both gears of course.

Art Walker