Popular Science Monthly
���Vulcanizing Tires with Exhaust Heat
A DEVICE which ena-
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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
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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.
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