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Title: |
1884 Image-Buckeye Engine Co., High Pressure Cut-Off Steam Engine |
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Source: |
The Engineer's Handy Book 1884 pgs 489 & 490 |
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Insert Date: |
3/1/2011 7:41:58 PM |
The Buckeye Automatic Cut-Off Engine.
The cuts on pages 489, 490, represent a front and back view of the Buckeye automatic cut-off steam-engine. As may be observed, the bed-plate is a modification of the Corliss or girder-frame pattern, a design which possesses sufficient rigidity, without extra weight of metal. It is faced up at one end to receive the cylinder, and at the other the main pillow-block. The cylinder contains the steam-ports, but not the exhaust-ports; and, as the valve-faces are as near the cylinder as is consistent with sufficient strength, the clearance is reduced to a minimum, a feature which renders the engine very economical in the use of steam. The cross-head is made in halves, is held together by bolts, and is attached to the piston-rod by means of a thread on the rod. The cross-head shoes move in flat guides, and can be easily adjusted by means of screws and jam-nuts.
The main steam-valve is driven by a fixed eccentric in the usual manner. An adjustable eccentric, the position of which on the shaft is under the control of the governor, works the cut-off valves. A novel feature of the cut-off valve-gear is a rock-shaft working in a bearing in the rocker-arm belonging to the main valve-gears. The adjustable eccentric is attached to a pendant arm on the outer end of it, and a similar but vertical arm on the inner end connects it to the head, and thus works the cut-off valve. The effect of this device is to secure a correct movement of the cut-off valves relatively to their seats in the moving main valve, and at the same time to effect a degree of adjustment of the cut-off exactly corresponding to the degree of change in the angular position of the eccentric, neither of which is possible without such an arrangement. These engines are in very general use, and are said to be very durable and economical. One of them on exhibition at the Centennial Exposition at Philadelphia attracted considerable attention. They are manufactured (both condensing and non-condensing) by the Buckeye Engine Company, Salem, Ohio, under J. W. Thompson's patent. |
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1884 Buckeye Engine Co., High Pressure Cut-Off Steam Engine
1884 Buckeye Engine Co., High Pressure Cut-Off Steam Engine
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