Page images
PDF
EPUB
[graphic][ocr errors][ocr errors][subsumed][subsumed][subsumed][subsumed][merged small]
[graphic][ocr errors][merged small][merged small][merged small][merged small]

SCIENCE AND INVENTION-(Continued)

Auto and Airship Engine

ΑΝ

N automobile and airship engine remarkably powerful in proportion to its weight, has resulted from a reconstruction of the old compression engine, introduced by Dr. Otto more than a score of years ago. It is known as the "Tygard." Heretofore all attempts to get more power strokes from the four-cycle motor have only resulted in multiplying the number of motor cylinders and further complicating the already too complex device. In the Tygard, the inventor has produced a new and unique arrangement of the old and well-tried parts of the engine structure-the piston, cylinder, valve, and power wheel and shaftwhereby this formidable handicap has been entirely removed and the gas engine rendered double-acting. This unique engine reverses all previous methods of construction and action, for the piston is stationary, being firmly bolted to the frame by means of lugs or trunnions extending out from its sides. In a report on a test of this engine, S. J. Beach,

[graphic]
[graphic]
[merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][merged small]

The John B. Wiggins Company

Sole Manufacturers

Peerless Patent Book Form Cards

LIGHT ENGINE FOR AUTOMOBILES AND AIRSHIPS.

a contributor to the Scientific American,

[blocks in formation]

says:

Mention Technical World Magazine

[ocr errors]

SLACK AND SCREENINGS

are as good as high-priced coal if you use the

MARTIN ANTI-FRICTION ROCKING

GRATE

[graphic][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][ocr errors][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][merged small][merged small][merged small][merged small][graphic][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small]

THE TECHNICAL WORLD MAGAZINE

[graphic]
[ocr errors]

SCIENCE AND INVENTION-(Continued)

"The single valve which is connected to the gasoline vapor supply and the exhaust outlet, controls the entrance of the ignitable mixture to the engine during its suction stroke; brings the spark plug cavity into communication with the charge at the end of the compression stroke; and, at the completion of the expansion or work stroke, opens a communication with the atmosphere, while the exhaust products are being expelled by the movement of the cylinder. While this action is occurring in one combustion space, a precisely similar cycle of operations is being produced in the other combustion space. Thus, by means of a single cylinder, a single piston, a single power shaft and wheel, a single valve, and a single spark plug, a four-cycle action is produced in both ends of the cylinder alternately, producing the work of two engines from a single engine structure. As this valve-actuating mechanism is from its nature noiseless, it apparently justifies its inventor in claiming it to be the lightest and simplest and most noiseless four-cycle gasoline engine yet produced."

Mention Technical World Magazine

[graphic][subsumed][subsumed][merged small][merged small][merged small][merged small][merged small][merged small]

No. 228

CRANE QUICK OPENING SELF

PACKING RADIATOR VALVES

Crane Quick Opening Self-Packing Radiator Valves are the highest type of Radiator Valves on the market, combining as they do both the Quick Opening and Self-Packing features. The SELF-PACKING feature precludes any possibility of the valve leaking at the stuffing box. They open and close with a half turn of the lever, which can be operated by the foot as well as the hand. The construction of these valves is such, that when closed, the discs bear on the seats very tightly, and the valve is locked in place until released.

[merged small][merged small][merged small][graphic][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][merged small][merged small][merged small][merged small]
« PreviousContinue »