. American telephone practice . FIG. 99.—STROMBERG-CARLSON RINGER. a separate yoke, F. The screw, B, passes freely through the arma-ture and engages by a shoulder, as shown, the spring yoke, D,through which it also passes, being threaded into the yoke, F. Itis evident that turning the screw in one direction or the other willpress the center of the yoke carrying the armature toward the yokeF, or allow it to spring further away from it, thus effecting theadjustment between the armature and the pole-pieces. Fig. ioo shows an excellent form of ringer designed by Mr. E. , and now being exte
. American telephone practice . FIG. 99.—STROMBERG-CARLSON RINGER. a separate yoke, F. The screw, B, passes freely through the arma-ture and engages by a shoulder, as shown, the spring yoke, D,through which it also passes, being threaded into the yoke, F. Itis evident that turning the screw in one direction or the other willpress the center of the yoke carrying the armature toward the yokeF, or allow it to spring further away from it, thus effecting theadjustment between the armature and the pole-pieces. Fig. ioo shows an excellent form of ringer designed by Mr. E. , and now being extensively manufactured by the MonarchTelephone Manufacturing Company, of Chicago. This differs fromthe old Western Electric ringer in the method of supporting thearmature yoke. Instead of supporting this on separate rods out-side of the coils as shown at D D, in Fig. 83, Mr. Yaxley providesthe free end of his magnet cores with screw threads, upon each of 126 AMERICAN TELEPHONE PRACTICE. which fit two hexagonal nuts which carry
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Keywords: ., boo, bookcentury1900, bookdecade1900, bookidamericantelepho00mill
