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Title: |
1898 Article-Otto Gas Engine Works, Horizontal Gas Engines |
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Source: |
Gas, Gasoline and Oil Vapor Engines, 1898 pgs 309-310 |
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Insert Date: |
10/22/2012 9:31:49 AM |
The Otto Gas and Gasoline Engine.
The "Otto Gas Engine " is essentially a historic name, and as now built by the Otto Gas Engine Works, Philadelphia, Pa., combines the fundamental principles first put in practice by Dr. Otto in Germany in 1867, and which is the basis of our best working engines. The four-cycle compression type seems to have become a standard, and in the workshops of the Otto Co. in the United States has been modified and developed into a most perfect action by improvements in the lines of the most approved details of construction.
The change from the slide-valve to the poppet-valve system was a most marked improvement, and with the variable charge and automatic time firing has made this a noiseless and smooth running engine, combining the highest efficiency attainable and great economy in fuel consumption. With fairly good illuminating gas, the limit has now been reduced to 15 cubic feet per indicated horse-power; and with gas of high heating power the low record of 12 cubic feet per indicated horse-power has been made with these engines. Moderate compression and medium explosive pressure, so essential to the durability of the working parts, has been fully endorsed in the construction of the Otto engines.
The adoption of the nickel alloy igniting tubes has done away with the constant annoyance from the burning out of iron tubes at inconvenient moments.
In the engines of the Otto Co., among some of the minor improvements that have contributed to its noiseless running and wearing properties may be named the spiral gear for operating the valve-gear shaft, separate and removable casings for the valves, change-speed governors, and automatic oiler rings on main journals.
The cylinder oiling-device is also automatic and operated by a small belt from the valve-gear shaft. The crank-pin boxes and piston joints are also automatically oiled by a wiping oil-cup on the crank housing, the oil for the piston pin passing through the hollow connecting-rod.
The gas-inlet valve is operated by a two-armed rocker shaft, one arm of which, carries a pin and traversing roller-disk, which is guided on or off the step cam by a forked bell-crank lever connected with the governor, thus controlling a variable charge. The electric or hot-tube igniter is furnished at the option of purchasers.
The electric spark is made by breaking contact of platinum electrodes, one of which is insulated in the head of the cylinder, the trip being operated on the outside by a swinging push-blade driven by an eccentric pin on the end of the valve-gear shaft.
The horizontal engines are built in various sizes from 3½ to 100 horse-power. The vertical type of the Otto engines is built in a neat and compact form for both stationary and marine power—the single cylinder from 1 to 12 horse-power, and with double cylinders from 17 to 100 horse-power.
These engines are of the four-cycle Otto compression type, and equally adapted for the use of gas or gasoline fuel. |
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1898 Otto Gas Engine Works, Horizontal Gas Engine—Fitted for Electric Ignition
1898 Otto Gas Engine Works, Horizontal Gas Engine—With Self-Starter
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