GB Patent: GB-185,901,659
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| Steam Engines
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Patentees:
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| Henry Blandy (exact or similar names) - Zanesville, Muskingum County, OH |
| Frederick T. L. Blandy (exact or similar names) - Zanesville, Muskingum County, OH |
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Patent Dates:
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| Granted: |
Jul. 13, 1859 |
Espacenet patent
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Joel Havens
"Vintage Machinery" entry for H. & F. Blandy
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Description: |
| Abstract:
I, JAMES STRANG THOMSON, of Kilmarnock, in the County of Ayr, North Britain, Manufacturer, do hereby declare the nature of the said Invention of "IMPROVEMENTS IN STEAM ENGINES," (being a communication from abroad by Henry Blandy and Frederick T. L. Blandy, of Zanesville, United States,) to be as follows, that is to say :
This Invention relates to the arrangement and construction of steam engines, more especially of the portable class, such as are used for agricultural purposes and by contractors and others, but the improvements are also applicable to a greater or less extent to other steam engines, the objects being the securing superior working efficiency and durability of the parts. According to one modification under which these improvements are carried out in practice, a horizontal cylindrical tubular boiler is set upon end pedestals with feet which rest upon the ground as a base, the supports being both at the fire-box and smoke-box end. To the upper side of the boiler there is bolted by broad flanges a hollow or tubular and continuous bed plate extending from end to end of the boiler, and answering as the entire support of the engine, suitable flanges being formed upon it for the reception of the working steam cylinder or cylinders. The cylinder is bolted on at the fire-box end, and the piston rod directly actuates the crank shaft, which is disposed horizontally in bearings over the other or smoke box end of the boiler, one such bearing being on the bed plate and the other on the boiler. This continuous hollow bed plate may or may not be used as a heater for heating the boiler feed water. When so used, the water from the source of supply is forced or drawn by the pump 5 through it into the boiler. The waste steam escapes from the working slide valve into a pipe in the interior of the hollow bed plate, when it is used for the double purpose of heating the feed water and generating a furnace blast, or it is discharged directly into the water in the hollow bed plate, when used solely for heating purposes. In this way the hollow bed plate is turned to economical account, and it keeps all the working parts of the engine quite free from and independent of the boiler.
Both the inside and outside fire-boxes of the engine are oval in transverse section, and they are so formed as to be almost entirely self-supporting. The inside box is entirely covered or surrounded with water, and the lower side of 15 both is quite open so as to secure a large extent of grate surface. The upper portion of the external fire-box is cylindrical, whilst its sides are brought in to the narrower width of the fire-grate by easy curves. The curvature of the top of the inside fire-box is flat or oval, and its curvature downwards corresponds to that of the outside box, leaving a water space between the two all around, the open bottom exposed to the fire-grate being the only portion where there is no water space. The slide valve is worked by an eccentric on the main shaft operating a slotted lever or link motion.
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