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xc-patents:xc-81 [2019/05/25 00:16] (current)
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 +====== Patent XC-81: 1845-09-10, New and improved steam engine ======
 +^ X Number ​     ^ Date       ^ Inventor ​      ^ City             ^ Title  ^
 +| XC-81       | 1845-09-10 | James McKay | Stanstead, QC Canada | New and improved steam engine |
 +===== Comments =====
 +XC patents are Canadian patents issued between 1824 and 1869. Scans of the patent drawing are not available; the specification is summarized below. The inventor is described as "​Engineer and Smith"​.
 +"The engine (which is called the "​Single or double Piston or Lever-revolving and Revolutionary Steam Engine,"​ for propelling vessels, locomotive carriages and all kinds of machinery by land or water), consists of a wheel and shaft resembling a fly-wheel, but with a broad flat surface on its periphery, projecting on each side of the main body; in these projections a groove is formed to contain packing, either metallic or any other suitable material for making a steam-tight joint; on the periphery of this wheel are attached two or more inclined planes, termed saddles, leaving a space between them corresponding with the groove made in the wheel, for a piston to work in, to which, being enclosed, the steam is applied in order to produce motion. These pistons are kept against the inner surface of the cylinder, as they revolve with the wheel and shaft by a spring or other suitable means; the cylinder and wheel may be made of any required dimensions for ordinary purposes; on the cylinder are formed two flanges, in order to bolt the side plates to; and on the inside of the cylinder is attached a double curved saddle or saddles, leaving a space in the centre corresponding with the groove made in the cylinder for the abutment slide or piston to work in, against which the steam acts as against the top or bottom of a common cylinder of a steam engine, and while the double curved saddles in the cylinder cause the pistons in the saddles on the wheel to recede into the groove, level with the top of the saddle, the inclined planes on the wheels operate on the same and the abutment slide or piston, and the instant the piston and abutments pass each other, as on an even surface, and are kept against the surface of the curved saddle and inclined planes, to the surface of the wheel and cylinder by a spring or other means; the inner surface of the cylinder and the outer surface of the wheel are turned smooth, and the saddles are so fitted on the wheel and cylinder as to form a continued smooth surface, that the pistons and abutments may slide easy and smoothly along."​
 +===== Information Sources =====
 +(To be filled in.)
 +    ​
 +===== External links =====
xc-patents/xc-81.txt ยท Last modified: 2019/05/25 00:16 (external edit)