A Tool Kit Vulcanizer
Page 43
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ASELF-CONTAINED vulcanizing outfit, known as the Autotherm and costing only £1 15s., has been introduced by William Frost Products, Ltd., Fernhead Works, Fernhead Road, London, W.9.
The outfit consists of the following items:—A simple claim), a supply of vulcanizing compound, a quantity of flux, and heat units. The last-named are in the form of metal trays containing a preparation which, when ignited, burns to give the correct vulcanizing temperature. Attached to the underside of the trays is a piece of compound protected by linen.
The sequence of operations in making a repair is shown in the accompanying series of illustrations:— (1) The damage in this case was caused by a burst, and is more serious than a normal puncture, as rubber has been blown away around the split. (2) To prevent extension of the damage, each end of the split is cut, as shown, with a pair of scissors. This is of great importance with synthetic rubber tubes. (3) The injured area is then buffed and given two coats of solution, and the cavity filled in with compound. (4) The tube being thus prepared, one of the long heaters—after removing the linen covering—is applied centrally over the damaged area. (5) The heater securely clamped in position. An igniter strip should be placed on the heater compound and lighted. If no strips be available, prod the mixture in one place with a match and light the loosened material. It will burn, but not flame, and wind will not affect it.
, About five minutes after the heater has died out, the repair will be cool enough to be removed from the clamp.