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Manufactured By:
White & Middleton Gas Engine Co.
Baltimore, MD

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Title: 1898 Article-White & Middleton Gas Engine Co., Gas Engine
Source: Gas, Gasoline and Oil Vapor Engines, 1898 pg 271 & Proceedings of the American Gas Institute, V 10 #2, Apr 1894, Appendix pgs. 56-57
Insert Date: 2/28/2014 11:37:22 AM

Image Description:
The White & Middleton Gas Engine.

This engine is equally suited to both gas and gasoline, and is made by the White & Middleton Gas Engine Company. All their engines are of the four-cycle compression type, with the principal exhaust ports opened by the piston at the end of its explosive stroke, and with an additional or clearance-exhaust valve in the cylinder head.

The valves are all of the poppet type. The supplementary exhaust valve is operated by a lever across the cylinder head and a push-rod direct from a differential slide mechanism, which does away with the reducing-gear used on other engines. An arm on the push-rod operates the gas-valve stem, which is provided with a regulating adjustment.

The small roller disc on the push-rod mechanism is under the control of a centrifugal governor and a spring, being thrown out of gear with the shaft cam whenever the speed of the engine exceeds the normal rate, and thus failing to open the gas supply and the supplementary exhaust valve until the speed of the engine has returned to its normal rate. There is a relief valve opening into the supplementary exhaust passage for relieving the pressure in the cylinder when starting the engine. The whole design of the engine is exceedingly simple and its action noiseless.

When gasoline is used the gas-supply valve is replaced by a small pump, which is operated by the push-rod, and its hit-or-miss stroke is governed by the action of the push-rod and its governor.

These engines are built in nine sizes, from 4 to 50 B. H. P.

This engine, designed by Chas. White and A. R. Middleton, of Baltimore, Md., and handled in New York by Kumberger S. Clements, 158 \\'est Broadway, is essentially an Otto in action and general form, but of claimed better detail of design, at least, according to the makers. It is, without doubt, of generally simple detail, and well made. Introduced some three or four years ago, several hundred are now in use. Some prominence in the Eastern market has been attained, and it is generally looked upon as a good engine. There is an absence of heavy gearing from the main shaft. A light rod controls the gas admission, and a small ingenious hit or miss ratchet governor, operated by a cam action, controls the regulation of the speed by omitting charges. Valves are of poppet form. Ignition is by tube. Somewhat high claims of efficiency are made (15 feet per Ind. and 19 feet per Brake H. P. on a 6 horse engine) based upon a high compression and the detail of operation. In exhibition in New York at the American Exhibition in I890-91, first premiums of superiority were awarded. It is made in nine sizes, from I to 25 actual H. P., with larger ones in prospect. The “White 8: Middleton Gas Engine Co." East Falls Ave. and Pratt Street, Baltimore, Md., is the name and address of the firm controlling. Description in further detail may be found in “Cassier’s" for May 1893.
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1898 White & Middleton Gas Engine Co., Gas Engine
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