The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 34
ORY ii generally made up of several thin plates, producing what iscalled a compound or laminated magnet. The plates areusually bound together by pieces of soft iron, which form thepole-pieces. Some compound magnets have been made whichwould carry a load equal to twenty-five times their own… … ZJ Fig. 5 magnetic state. This retentivity is the greater the harderthe steel. By a process, however, of subjecting the steel tovery great pressure, M. Clemandot has given a high reten-tivity to it, with the advantage that the metal can be filed,turned, etc., without impairing its magnetic value.…
Telephone
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
