gothis style steam enginr 1839 - Page 4
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  1. #61
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    back in psts #51 and 52 I posted the original drawings of the boiler
    in order to model it I need to know how it works so I did a simple graphic of what I thought how it worked

    down in the bottom is the fire box because that is where the doors are located. hot gas and smoke pass through the inner pipes the out. the boiler itself is filled with water that turns to steam and rises into the steam dome.
    Attached Thumbnails Attached Thumbnails section1.jpg  

  2. #62
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    then I drew a top view of the cross section and realized the first graphic did not work because the smoke and gas was exiting through the end. The steam dome and stack are sitting on top in the center of the boilers. The question was how did the smoke and gas get to the stack?
    Attached Thumbnails Attached Thumbnails boiler-top-view.jpg  

  3. #63
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    maybe it is the other way around and the water goes through the tubes and it is heated by the fire.

    this made sense for the fire because now the gas and smoke can exit the stack. Bad for the steam because how does the steam leave the tubes.
    Attached Thumbnails Attached Thumbnails graphic.jpg  

  4. #64
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    a couple cad drawings ready for 3D modeling
    Attached Thumbnails Attached Thumbnails door.jpg   end-drawing.jpg  

  5. #65
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    the original drawings are quite old and very delicate. A cad drawing is done over the original making corrections in the plans. notice on the drawing the pipes do exit the end of the boiler and they do have an end plate like the drawing in the last post.
    On the left side the drawing shows 3 square areas that do not line up with anything so they are kind of a mystery at this time.
    Attached Thumbnails Attached Thumbnails drawing-cross-section.jpg  

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    after extensive research and advice from others the boiler drawings are complete and now being modeled so it is on to the paddle wheels.

    from the drawings can anyone describe to me how this goes together?

    there are drawings of 2 size round plates does the drawing show both sides of the same plates?

    I assume there are 3 complete wheels with the larger plate in the center.

    exactly how do the paddles attach to the wheels?
    Attached Thumbnails Attached Thumbnails water-wheel1.jpg   water-wheel2.jpg   water-wheel3.jpg   water-wheel4.jpg   water-wheel5.jpg  


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    and the last 3 drawings

    anyone know of an image or illustration of a water wheel that is together?
    Attached Thumbnails Attached Thumbnails water-wheel6.jpg   water-wheel7.jpg   water-wheel8.jpg  

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    Dave, I think there would be three hubs on the wheel shaft. The two hubs on the left are the inside and outside of the outside hubs, two per wheel. The hubs on the right are the inside and outside of the center hub. The Y shaped irons would attach to the inside and outside irons. I do not know how the paddles are attached.

  9. #69
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    in the drawing there are these L shaped parts with a bolt on one end, these might be used to attach the paddles, but not sure of that.

  10. #70
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    boilers are done right down to the hinges and rivets on the fire doors
    Attached Thumbnails Attached Thumbnails boiler5.jpg   boiler3.jpg   boiler2.jpg  

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  12. #71
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    the boilers had a steam dome and a duct that ties the boilers together so smoke would go from the fire tubes in the boilers to a collection point and up the stack
    Attached Thumbnails Attached Thumbnails steamdome1.jpg   steamdome4.jpg   duct7.jpg  

  13. #72
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    the final configuration of the 4 boilers

    what makes this configuration odd is I wonder about the wisdom of the engineers. The boilers were placed back to back with the fire doors on either end. That sounds ok but the coal bunkers were at the front then the boilers and 6 feet from the other end was the engine. That seems very close and how were the boilers close to the engine stoked when the coal bunkers were 30 feet on the other side. I do wonder how the firemen got the coal around the boilers, there was 2 feet between the boilers and a narrow passage between the sides of the boilers and the side of the hull.
    I would think those boiler casings were really HOT
    Attached Thumbnails Attached Thumbnails boilera12.jpg   boilera3.jpg   boilera9.jpg   boilera2.jpg  

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