582 



Popular Science Monthhj 



National MileomeUr 



Co.. Ltd. 



J5 Conirna St. W , DETROIT 



DIRECTIONS 



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 A Sw«lfhl AKm4. 



Tape No. 4d 



CHICAGO. ILL, 

 MILWAUKEE. WIS. 



ROAD CONDITIONS 



SPEED LAWS 



The Automobilist's Automatic Path- 

 finder on the Steering Column 



EVERYONE who has ever toured to 

 any extent over unfamiliar roads in 



an automobile, knows ^ 



how inconvenient it is to 

 have to stop every few 

 miles and compare the 

 reading of his speedome- 

 ter with the distances as 

 given in his route book. 

 Even if a member of the 

 party sat on the front 

 seat and called off the 

 mileage readings and the 

 landmarks, it is often 

 necessary to slow down 

 or turn back to find one's 

 bearings. 



All these difficulties 

 have been eliminated by 

 means of an automatic 

 route book which is 

 mounted on the steering 

 column of the car di- 

 rectly under the steering- 

 wheel \\here the driver 

 can look at it without 

 taking his hands off the 

 wheel. The new type of 

 book has no pages to 

 turn or no places to find. 

 It consists of a small 

 metal box carrying a 

 tape on which is printed 

 for any particular route, 

 the turns of travel as 

 indicated by arrows, and other symbols 

 for steam and electric railways, dangerous 

 curves, bridges, garages and hotels. The 

 tape also supplies information on road 

 conditions, traffic laws, and other his- 

 torical points of interest. A full mile of 

 travel is always visible on the tape and in 

 this way prepares the driver in advance 

 for any unusual or dangerous road con- 

 ditions, cro.ssings, steep hills, etc. 



A separate tape is required for each 

 route. All that the driver has to do is to 

 start the tape at the point indicated. 

 The tape mechanically unwinds from a 

 roll in one end of the case and winds up 

 on a similar roll the other, the move- 

 ment being provided by a tlexible shaft 

 geared to either front wheel in much the 

 same manner as a speedometer. 



Electricians Should Wear Straw Hats 

 While at Work 



A SUGGESTION has recently been 

 made by a prominent engineer, that 

 all persons employed 

 in and around elec- 

 trical stations should 

 wear straw hats with 

 stiff brims all the 

 year round while at 

 work. Straw is a 

 better insulator than 

 felt and the stiffness 

 of the straw gives an 

 additional advan- 

 tage, as it gives more 

 emphatic warning to 



INTERSTATE 

 GARAGE CO. 



MORRISON 



HOTEL 



terrace"'gaiu)en 



KENNARD TIRE 

 SERVICE 



4$0 Rash Si. 



Tire* — Cu«liii« — Tub«» 



Aulo SuppWn 



Chicago 



CHICAGO. ILU 



Population 

 2.497.722 



INTERSTATE 

 GARAGE CO. 



• » Ri 

 Tire* — Gasoline — Tube* 



CMcago 



This is a sample of the tape and the indicator on the steer- 

 ing column that does away with cumbersome route books 



the wearer of the hat when he comes in 

 contact with a wire or apparatus carrying 

 electricity of high tension. It may seem 

 ridiculous to wear a straw hat in zero 

 weather, but — safety first! 



And Now We Wash Ourselves in the 

 By-products of Garbage 



NEW York city's plant on Staten 

 Island for the reclamation of gar- 

 bage produces the necessary fat for ten 

 million cakes of soap yearly, and also the 

 nitrogen and glycerin for the manufac- 

 ture of seven hundred thousand pounds 

 of high explosive. In addition to this, 

 much phosphoric acid and potash are re- 

 claimed and sold for fertilizers. This is 

 effected by the so-called Cobwell process. 



