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Title: |
1872 Article-Snyder Brothers, Horizontal Steam Engine |
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Source: |
Scientific American, V 27 #23, 07 Dec 1872, pg. 354 |
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Insert Date: |
4/21/2020 2:39:52 PM |
IMPROVED STEAM ENGINE
The steam engine of which we present an illustration is built for the purpose of being carried far from machine shops and skillful engineers; and the manufacturers have spared no pains or expense to get up an engine that will lessen the care of the engineer, and reduce the liability of derangement to the lowest figure.
The parts most exposed to wear are made of steel and bronze, and the balance, of the best hammered and cast iron. All the wearing parts are made very large, so as to present a large amount of surface to do the work.
It is a plain straightforward horizontal steam engine, without independent cut off, the introduction of which would complicate the engine and render it more likely to get out of order. But those which have been in use have exhibited an economy in the use of steam that many of the more complicated independent cut off engines cannot excel.
An idler rock arm is put in between the eccentric rod and the valve steam, so as to allow the engine to be run at a high rate of speed, and avoid all springing which so seriously interferes with the motions of the valve on high speed engines as commonly built.
The flywheel with wrought iron arms is acknowledged to be the cheapest in construction and has the greatest proportion of its weight in the rim just where it is most effective. The defect of those heretofore made has been that they were not stiff enough sidewise. This fault Messrs. Snyder Brothers have overcome by spreading the arms or spokes apart (sidewise) at the hub, so as to brace against each other.
The second difficulty in ordinary wheels is the shrinking of the cast iron away from the arms and leaving them loose. This they have also overcome, and the arms of their wheels are solidly welded to the rim and hub; or, when preferred, they put a pulley flywheel on their engines.
The piston is self-packing and the manufacturers state that it requires no care. One of them, 22" diameter, has, they state, been running in a sawmill for six years without repairs or care, and the interior of the cylinder today is as bright and smooth as a looking glass.
These engines are built to run at a high rate of speed, so as to develop as great an amount of power at as small a. cost as possible; and to render this speed admissible, every part is finished with the greatest accuracy and made of the very best material. For further particulars address Snyder Brothers, Williamsport, Pennsylvania. |
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1872 Snyder Brothers, Horizontal Steam Engine
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