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Training in Refrigeration
THOROUGH training is one of the most important factors in the sphere of technical sales, and regular training schools have been established for the service engineers of Frigidaire.These are being. extended to accommodate_ also all the company's technical men in this field abroad.
addition, it is intended to present, without charge, a model of the Frigidaire Viso-Trainer to each of those selected technical colleges which offers courses in refrigeration engineering. This is an expensive and well-built device carrying a glass coil 45 ft. long which can stand pressures up to 100 /mi. It demonstrates what actually takes place inside the evaporator or cooling coil which is normally within the refrigerator cabinet or cold room.
The refrigerating unit itself is of a standard type used for small commercial equipment. It works on the sealed rotary system and is of h.p. The refrigerant is dichlorodifluoromethane with a boiling point, at atmospheric pressure, of minus 21.7° F., and the approximate capacity of the equipment, when using a thermostatic expansion valve, is 2,265 B.Th.U./hr. at 4' F., which is ample for the purpose.
Six-inch Budenburgh gauges indicate pressures in the various parts, and refrigerant temperatures are recorded on distant-reading thermometers.
Road transpzet operators are becoming increasingly interested in refrigeration and will no doubt welcome this facility for students.
Tribute to British Products
EXCURSIONS by coach of a day's or half-day's duration, are always a popular feature of holidays. According to a member of the staff of this journal, who has recently returned from the Costa Brava, in north-eastern Spain, the demand there for these trips is considerable. One of the most frequented resorts along this 110-mile stretch of coastline,
especially by British and German visitors, is the fishing village of Tossa de Mar. A small number of vehicles, with Austin, Bedford, Leyland and other British chassis, and locally built bodywork, is hired for this excursion work from a concern in Gerona, 25 miles away.
The roads in this district are both hilly and tortuous, many winding through vast cork forests. and from the high coastal areas there are often sheer drops to the rocks and sea below. In one instance, the descent to a lesser-known fishing village is merely a steep, rough, deeply rutted track, bearing no semblance to a made-up thoroughfare, yet despite the anxiety displayed by passengers the coach drivers remain unperturbed.
Tourists are loud in. their praises of the skill of these men, and they in turn award full marks to the reliability a the British vehicles which they handle, and which require maximum efficiency from engines and brakes.
Standardization in Excelsis
BUILT recently at Cannock is a plant of A. Schrader's Son Division of the Scovill Manufacturing Company, to provide capacity for the production of rubber-covered or rubber-based valves for all types of tyre, whether tubeless or conventional. On July 11, this was officially opened by Mr. Seldon T. Williams, president of the division and vice-president of Scovill.
It was early in the 1890s that Mr. G. H. F. Schrader, son of the . founder, invented what has become the standard tyre valve of the world, consisting of a housing, a core and a cap.
With the virtual disappearance of the inner tube in the U.S.A. it became necessary to add vulcanization to the product, and in Britain too, this is now essential—hence the new factory, with the latest highspeed equipment, some machines producing 450 moulded components simultaneously. Total valve production is now at the rate of 1 m. per month.