1. Trunk Engine.

2 and 3 Vertical Engines.

4. Steeple Engine.

5. Inclined Frame Engine.

6. Oscillating Engines.

7. Corliss Frame or Girder Engine.

8. Horizontal Engine.

9. Radial Engine.

10. Beam Engine.

11. Beam Engine

12. Self Contained Horizontal Engine.

13. Inclined Cylinder Engine.

14. Double Cylinder with Cranks opposite or at 180°.

15. Three Cylinder Engine with Cranks at 120°.

16. Compound Woolf Engine with Cranks together.

17. Compound Woolf Engine with Cranks opposite or at 180°.

18. Compound Tandem Engine with Receiver.

19. Compound Engine with Cylinders side by side and Cranks at 90°.

20. Triple Expansion Engine, Cylinders side by side and Cranks at 120°.

21. Triple Expansion Engine, semi-tandem:

Two Cranks at 90°.