Page:Popular Science Monthly Volume 89.djvu/820

 806

Timing

��Popular Science Monthly

��Automobile Speed Demons with a New Device

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���lime. If the speed limit has been i-xceedcd, the central operator, by means of the telephone, orders the third man to arrest the speeder. This he does by displaying a red lantern and illuminated sign, reading "Police." As a rule, the mo- torist has no idea that he is being timed until he is "flag- i;ed" and arrested.

A number of cities on the Pacific Coast have adopted llie system, one of which in one day collected fines amounting to over half the [)urchase price of the system.

��The end operators are equipped with push-buttons and tele- phones connecting with the stop-watches at the central station. A third man flags the offender with an illuminated signal

IF THF; inxenlion of E. H. Pendleton is wideh' introduced, automobile dri\"ers may no longer break the speed laws and escape punishment through lack of evidence. Pendleton's device consists of a neat wood- en box containing a telephone, two push- buttons, and two stop-watches, regulated to the tick of a second. The three men re- quired to operate it are located along a given road at points six hundred and sixty feet apart. An operatt)r is stationed at the central point with the instrument. End operators have telephonic communication with this central station, and are also equipped with push-buttons connected by electric wires with the stop-watches at the central station.

When an automobilistwho is going faster than the law allows, approaches from either end, the ojK'ralor presses the ijush-buiton, and the stop- watches si.x hundred and sixty feet away are set in motion.

W h e n I a u lf>m o I) i I i s t reaches the point where ihi- watches are located, the operator there in- stantly stops the watches, thu> registering the

���The drivinR is accomplished by the friction between the rear wheels and the metal drums of the motor crankshaft, which is carried crosswise of the frame

��Novel Method of Drive for Light Cycle-Cars

DRIVING through the peripheries of the rear wheels and steering through pixoted axles, the novel method of combined driving and steering shown in the accompanying sketch should pro\e of %alue to the designers of light c>cle-cars and the like. The driving is accomplished by the friction between the rear wheels and metal drums on the opposite ends of the motor crankshaft, which is carried crosswise of the \ehiclc frame. The steering is done through the use of pivoted axles front and rear, the opposite ends of which are connected by two cross wires manipulated h\ means of a crankshaft and arms fastened to the vehicle frame.

In turning corners, the friction drum on the outside of the curve is released from its contact with the rear tire, while that on the insiiie of the curve presses with greater

Brake action is secured by con- structing each of ihe metal friction tlrumsof two tele- scoping parts with coned surfaces. The outer part of the drum, which is cylindrical on the outside where it comes into s t ead \ contact with the tire, is forced in or out of the clutch- actioii by means of a fork.

��lorce agamst its tire.

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