|
Title: |
1898 Article-Otto Gas Engine Works, Marine Gas Engines |
|
Source: |
Gas, Gasoline and Oil Vapor Engines, 1898 pgs 313-315 |
|
Insert Date: |
10/22/2012 9:33:48 AM |
The Otto Marine Engine.
The small marine engines have a single cylinder from 1 to 12 horse-power and two cylinders from 17 to 100 horse-power. All sizes are made with reversing-gear or with reversible propeller blades, as desired. The same general principles of construction characteristic of the Otto type have been carried out in all the marine engines. The crank is enclosed in a case,
and all wearing parts are oiled from sight-feed automatic oil-cups, so arranged as to be controllable and in view while the engine is running. The gasoline is forced to the cylinders in positive and regulated quantity by a pump situated low down so that there may be no annoyance from overflow by the pitching of the boat, the gasoline being fed to the cylinder under the control of the governor, the surplus flowing back to the tank from the small receiver on the head of the cylinder.
The reversing blade propeller is becoming a favorite device for controlling the speed or reversing for an engine that must run constantly in one direction; it is simple and noiseless and allows of a gradual change without a shock—a valuable feature in a pleasure boat. The fuel account, which is of great moment in a boat, has been reduced to one-tenth of a gallon of 760 gasoline per indicated horse-power per hour. A governor is provided on all the larger marine engines which controls the charging valves by the sliding of a differential cam on the valve-gear shaft, which operates the valve levers, the action being controlled by the governor through a bell-crank lever, as shown more fully in the illustration of the horizontal engine.
In the reversible screw the blades are centered radially through the center line of the shaft, giving the hub a clean-cut appearance, and with the least possible resistance through the water. The boats are furnished in all sizes from 13 feet up, the 13-foot boat having a brass engine of 1 horse-power. |
|
1898 Otto Gas Engine Works, Small Marine Gas Engine
1898 Otto Gas Engine Works, Duplex Marine Gas Engine
1898 Otto Gas Engine Works, Duplex Marine Gas Engine
|
|