Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 198
of these other materials. Hence,in order to secure the proper surface of contact, the pieces of steelor wrought iron should be imbedded in the cast iron by placing theformer in the mould when the casting is made, or the cast iron maybe bored out to receive the ends of the cores. Joints in the… … DESIGN 161 introduce great reluctance is not true, for we have seen on page 19,that an ordinary joint is equivalent to an air gap of about 0.002inch, which is practically insignificant, and does not warran*; themaking of complicated castings or forgings to avoid one or two jointsin the magnetic…
Electrical engineering
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