This is the fixed piston, moving sleeve Steam engine. As by name, there is a piston no-4, (in the fig-1)
Is fixed in the head and it does not move. In this piston, there are the Teflon ring-1 0, is bolted.
The moving sleev-3, moves downwards (power stroke) as shown in fig-1, the steam valev-5, open by the cam and
push rode-6,
The steam pressure pushes the moving sleeve at downwards position, and the crank shaft-I, tend to move toward
BDC. As the sleeve reached to BDC, the steam valve closes as shown in fig.2, and the mixed condensate, leaves
from the sleeve-3 (exhaust through port) due to uncovering the piston by the moving sleeve. There becomes
enough passage to the condensate to exhaust freely, as shown in fig.2. The condensate pushed toward the exhaust
port.
The sleeve-3, turn to move up word, toward TDC, here the vacuum has created hue to pervious expulsion of the
condensate and as it reached to TDC, the next cycle comes repeatedly. Consequently, the rotation of the fly wheel
goes on.
The speed of the engine is governed by the centrifugal governor linked to the steam valve as in the conventional
system.
The lubrication of the piston is done by the condensate water, so no extra lubrication is required for it.
The other moving parts as, main and big end bearing and the cross slide is done by oil flesh, filed in the crank case.
The position of the engine is at horizontal position and 15* down word at the piston head, due to easy withdrawal
of the condensate by gravitational force from the condensate chamber-9 to the exhaust port.

WE CLAIMS:-
1. I claimed and claim, that this vention is related to the small steam engines.
2. That, this invention is my own designed invention for fixed piston and the moving sleeve type.
3. That the sleeve moves in the reciprocating movement in the condensate chamber.
4. That in this invention, there are no external lubrication is required. The water is the main lubricating agent
for the piston and sleeve.
5. That the crank case and the cross slide is in oil bath.
6. That the valve mechanism is as cam actuated on the crank shaft with poppet valves in the head.
7. That there is the single valve for steam inlet or may be dual, one for steam outlet and other for steam
intake.
8. That the sleeve moves in the condensate chamber and this chamber has the steam outlet neck.
9. That in the duel valves;the condensate outlet is in the exhaust port in either head or in the sleeve.
10. That the piston ring is made by Teflon material.