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Page:Popular Science Monthly Volume 90.djvu/286

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270

��Popular Science Monthly

��electrically with turbine engines will prob- ably be employed on the new vessels.

The British battleship Queen Elizabeth, which took a prominent part in the Dardanelles campaign, has a rating of 60,000 horsepower and is a twenty-five- knot vessel. The British Tiger was designed for a speed of 28 knots with a rating of 100,000 horsepower. The German battleship Goeben, which made her famous dash for Turkey at the beginning of the war, is a twenty-eight-knot vessel of 70,000 horsepower, while among the later vessels the Seydlitz might be mentioned as a twenty-nine knot, 100,000 horsepower vessel. The Vaterland, most impressive of the German steamers now resting in New York harbor, has a horsepower rating of 65,000 and a speed of twenty-four knots.

The great Waterside station of the New York Edison Co., located on the East River, is reputed to be the largest steam plant in the world. Two buildings comprise this station. No. i, the original station, has a total capa city of about 165,- 000 horsepower, which is con- siderably less than the power of one of the new battle cruisers. The two buildings of the Waterside plant develop about

��and the fall is 160 feet. The power houses planned for both American and Canadian sides of the Falls, including those in opera- tion, are expected to utilize twenty-one and a half per cent of the mean flow of the river, utilizing a total of 650,000 horse- power. This vast amount of power would be insufficient to run even four of our new battle cruisers.

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���The motorcycle has many necessary accessories to carry so that a combination lamp and horn arrange- ment fastened to the handlebar saves valuable space

��288,000 horsepower, which is about 60 per cent more power than one of the new battle cruisers will develop.

The great 59th Street plant of the Interborough Rapid Transit Co., which supplies power for the trains of New York's subway, develops only a little over 65,000 horsepower — less than forty per cent of that of the proposed battle cruiser.

In 1900 the total hydro-electric power developed in the United States was little more than enough to run one of the new battle cruisers, amounting to about 200,000 horsepower. To-day the total horsepower developed hydro- electrically in this country would run about ten of the battle cruisers.

The greatest hydro-electric develop- ment of all, that at Niagara Falls, is perhaps the most impressive subject of all for comparative purposes. The mean flow of the Niagara River is about 222,000 cubic feet per second

��Turning Your Motorcycle Lamp into ai Horn Without Changing Its Shape |

ACOMBINED lamp and horn which does not detract from the original lines of the motor vehicle has been invented by Nathaniel B. Wales, of Boston, Mass. He combines in a single unit both the lamp and horn. The electromagnets of the sound producer are mounted in a rear extension of the lamp case without changing its size or shape. Immediately in front of the sound pro- ducer is the electric light bulb. For a megaphone or sound chamber to intensify the volume of sound the inventor utilizes the hood, which fre- quently serves on gas lamps for the escape of heat. In other words, the wall adjacent to the parabolic reflector becomes the sound chamber. Obviously, it is not necessary to change the size of the lamp to do this. If this does not insure a sufficient volume of sound the circular front of the lens case may be utilized.

��/RIGHT HANDLE BAR ■ TAIL LIGHT-

���GROUND

��LAMP BULB

PERFORATIONS The sound-box of the horn is placed in the rear extension of the lamp case. The hood acts as a megaphone to intensify the volume of sound

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