Je ne sais pas si on a le droit de faire ça...mais Je t'ai extrait le texte des pages 14 & 15, du PDF de "
www.waterworksmuseum.org.uk" autour des images du moteur, il n'a plus qu'a l'envoyer au traducteur de Google...et deviner le sens.
The Hayward Tyler Hot Air Engine and Its Principle of Operation
The design was so successful that Hayward Tyler of Luton secured a licence from Rider Ericsson in the 1880s to manufacture
'Rider Patent' Hot Air Pumping Engines. Figure 7 shows the how the hot cylinder was heated.
By 1911 they claimed to have made over 1100 Improved 'Rider Patent' machines, later ones having a removable furnace which
facilitated servicing. One of their boasts was to be able to raise 1000 gallons (—4550 litres) of water 80 feet (24.4m) for
1 penny (—0.4p). These were installed to supply drinking water in royal residences including the King's House at Sandringham
and the Ras-el-Tin Palace for His Highness the Khedive of Egypt. Military forts, barracks and domestic premises both in the
UK and abroad also utilised them for water supplies, but as Hayward Tyler's catalogue shows they could be used for pumping
wines, liquors or even sewage.
The action of an alpha type hot air engine is shown in Figure 8 in which the sequence is traced in a clockwise fashion from
the top left. Note that pistons in the hot and cold cylinders are actually displacement plungers. This has two benefits.
Firstly, it allows the airtight seal around the plunger in the hot cylinder to be positioned as far away from the hot
furnace end as possible. This seal, which is made of leather, is also cooled by an annular water jacket to prolong its life
further. Secondly, it facilitates the mixing and circulation of the air within the cylinders since the air can move around
between the plungers and the sides of the cylinder when moving from one cylinder to the other.
FIGURE 8: Sequence of Operations in the Hayward Tyler Engine form of the Rider Engine
The first picture shows air, which has been heated to the maximum temperature, expanding in the hot cylinder and pushing the
right hand plunger 'P' upwards. In the second picture the air is starting to transfer via the regenerator 'R' to the cold
cylinder, where its plunger 'C, which lags 'P' by 90°, is rising, so that the cold cylinder can accept the hot air for
cooling. In the third picture the plunger "P" now descends to expel all the hot air into the cold 14
cylinder where it contracts. The air at this time is giving up some of its heat to the regenerator, and being partially
cooled in the process. The final cooling is only complete when all the air is in the cold cylinder. The pressure in the
engine falls and in the fourth picture, plunger 'P' has forced all the air out of the hot cylinder, but plunger 'C' is
nearly half way through its descent ready to push the contracted cold air back through the regenerator, where it will pick
up heat, and be accepted into the hot cylinder ready to expand further and push plunger 'P' up again at the start of the
next cycle.
FIGURE 9 : Cross Section of Hayward Tyler Engine
Figure 9 shows a cross section of the Hayward Tyler engine. Please note:-
• The fire
• The length of the plunger in the hot cylinder (this is needed to keep the plunger washer/seal away from the heated end of the cylinder)
• The small cooling jacket at the top of the hot cylinder to keep the plunger washer cool 15
• The regenerator
• The 'compression' plunger and cylinder which has a full water jacket
• The force pump (for circulating water through the water jacket) which is directly coupled to the top of the compression plunger
PS (mais qui n'a rien à voir!)
je cherchais depuis des années à savoir si le moteur Ericsson original "caloric engine" (cycle ouvert, soupapes, etc) avait réellement tourné...
à la fin de cette vidéo on le voit tourner doucement 3-4 secondes, ça pourrait être une preuve !
https://www.youtube.com/watch?v=0dqrRpV76sk
) je pense que c est un "ALPHA"
en fonctionnement on voit bien le piston chaud qui a le même diamètre que le piston moteur et le régénérateur se trouve en dessous du refroidissement 
)
et même démoli pour d autre tentatives ,tout ça c est un peu 
tout le monde
a savoir un Stirling a variation de vitesse avec un système de différenciel (il m a même dit qu il avait dépose un dossier à INPI) il avais fait un proto en "LEGO" 
,moi grand seigneur 
