Revised Steamjet Engine Layout

The RWDP/Bude research notes sent state that the steam from the Nozzle:

came directly from the Boiler, rather than the cylinders.

If that is the case, our (approved) layout is wrong.

It should look more like this.





But, if you look at Wikipedia:

1820s that directing exhaust steam from the cylinders up the chimney to provide a steam blast increased the draught and consequently provided significantly better performance. However, the invention of the steam blast is a matter of controversy. Although it is often credited to George Stephenson (largely due to the writings of Samuel Smiles) and was used on his Rocket (1829), it was by that time already in use by Timothy Hackworth, who had incorporated a steam blast into the Royal George (1827). Even Richard Trevithick was aware of the usefulness of the steam blast; his Pen-y-Daren locomotive of 1804 exhausted steam into the chimney. Sir Goldsworthy Gurney also laid claim to the invention.

So which is it to be?

Does the steam that feeds the Nozzle come from the boiler or the cylinders?

Please confirm, urgently.



Here's the original layout:


SteamJet Nozzle
We also need a clear reference for the shape of the Steam jet Nozzle, as the descriptions are somewhat unspecific.

A ring of jets each about an inch long and a quarter inch in diameter, shaped like hollow needles. This ring projected off the a main stem rather like the branches of a Christmas tree the jets, by contracting the steam, kept up the required pressure

This is what we think the nozzle might look like. We don't need to be too accurate, but this really needs to be judges by someone with knowledge of these things.