摘要:

The object of this paper is to place before members of the Institution observations made during a trip to the United States upon some of the practices adopted in line construction work. The treatment is mainly descriptive and, in general, no attempt is made to estimate the advantages or disadvantages of American telephone methods in comparison with those adopted in other countries.

DOI:10.1049/jiee-1.1922.0001

出版商:IEE    

年代:1922

数据来源: IET

摘要:

From the earliest times, workmen have had to deal with the problem of fixing something to something else. This is a relatively easy matter with some materials, but becomes more difficult when dealing with metals. Since Elihu Thomson introduced resistance welding many years ago great developments have taken place in electric welding, but the problem of welding electrically by direct means two pieces of metal of widely different sections has hitherto remained unsolved, and the welding of dissimilar metals of widely different melting points, such as brass and steel, has been considered to be impossible. The “Cyc-Arc” process of automatic electric welding has, however, solved these problems, and it is believed that this system of electric welding stands unique, on account of the fact that by its means masses of metal, differing both in size and in quality, can be automatically welded together, as the result of a single operation of an ordinary bell-push, by the consequent heating of only the metal parts to be welded, without using or reinforcing in any manner with metal from any other source such as a metallic electrode or by the use of any flux.

DOI:10.1049/jiee-1.1922.0003

出版商:IEE    

年代:1922

数据来源: IET