Popular Science Monthly 



Vulcanizing Tires with Exhaust Heat 



A DEVICE 

 which ena- 



/// /i^H vL^ „ .^ l^lgg |-j^g motorist 



to vulcanize tubes 

 simply by using 

 the heat d e v e 1 - 

 oped at the ex- 

 haust tube of an 

 automobile has been brought out by a 

 Pennsylvania firm. The vulcanizer con- 

 sists simply of a curved plate to fit over 

 the exhaust manifold, a clamp for hold- 

 ing the inner tube in place, and a ther- 

 mometer to indicate the temperature. 

 By running the motor slowly the heat 

 may be regulated so as to keep about 

 260 or 280 degrees, at which temperature 

 the vulcanizing process will readily take 

 place. 



A Trouble-Proof Tire 



PU N C - 

 TURE- 

 PROOFING 

 a t i r e from 

 the inside is 

 the latest idea 

 of one well- 

 k n o w n tire 

 manufac- 

 turer. The 

 "trouble- 

 proof" tire, as 

 this latest 

 product is 

 called, has a toughened chrome leather 

 strip on the inside of the casing, where 

 it touches the inner tube, and tires so 

 treated have been run, according to. 

 the manufacturer's claim, for 12,000 

 miles without puncture. The idea is 

 that the chrome leather strip will turn 

 back the point of any kind of nail or 

 spike, after this nail has penetrated the 

 entire rubber casing itself. 



An Oil Cup for Auto Springs 



A .SIMPLE but 

 effective oil- 

 ing device for the 

 leaves of springs 

 on Ford cars is 

 the Mosco oiler, shown in the accom- 

 panying drawing. It consists of a reser- 

 voir which is formed between the clamp 

 and the side of the spring; felt washers 



593 



are used to prevent the leakage of oil. 

 The device is held in place by two set- 

 screws. 



Hot-Water Bottle Fits the Back 



ORDINARY 

 metal hot- 

 water bottles have 

 never been popu- 

 lar b-ec a u se of 

 their inflexibility, 

 but the shape of 

 a new aluminum 

 one does away 

 with this incon- 

 venience. It is 

 oval and curved so that it fits the back 

 or a cheek swollen with toothache equal- 

 ly well. For the cold-blooded person 

 who cannot afford an electric bed pad, 

 and for whom a rubber hot-water bottle 

 loses its heat too quickly, the new bottle 

 will be invaluable. Perhaps one of its 

 best points is the fact that it does not 

 wear out, or become leaky. W^ater for 

 it can be heated right in the bottle by 

 holding it over a lamp or stove. A thick 

 eiderdown cover makes it soft and pre- 

 vents its burning the aching or cold 

 member to which it is applied. 



An Anti-Clogging Oil-Gage 



OIL-gages for 

 use on auto- 

 mobiles have the 

 disadvantage o f 

 catching all sedi- 

 ment in the lubri- 

 cant. Clogging is 

 the result. Prac- 

 tically all gages 

 are constructed on 

 the principle of 

 the drain of a 

 water-sink, with 

 its sharply-curved 

 piping. A manu- 

 facturer of gages 

 has realized this 

 inherent error in 

 ordinary oil-gages 

 and has brought 

 out a new type which is intended to elim- 

 inate clogging. It has a downward chan- 

 nel of large diameter, and is particularly 

 adapted for Ford cars. 



