. The medical and surgical uses of electricity. . Pig. 59.—Engelmanns Faradic Battery, with High Tension Coils (Waite & Bartlett). currents given by this machine is regulated by means of the sliding grad-uator attached to the front of the case. The coil of the apparatus represented by Fig. 63 has a total length of7,614 feet subdivided as follows:18 2 74 ELECTRO-THERAPEUTICS. No. 21 wire. First division, 84 yds. Second division 154 yds. 32 300 500 36 500 1,000 Having but one helix its advantage over the separate spool system ismanifest. It is far more compact, there being no occasion to remove
. The medical and surgical uses of electricity. . Pig. 59.—Engelmanns Faradic Battery, with High Tension Coils (Waite & Bartlett). currents given by this machine is regulated by means of the sliding grad-uator attached to the front of the case. The coil of the apparatus represented by Fig. 63 has a total length of7,614 feet subdivided as follows:18 2 74 ELECTRO-THERAPEUTICS. No. 21 wire. First division, 84 yds. Second division 154 yds. 32 300 500 36 500 1,000 Having but one helix its advantage over the separate spool system ismanifest. It is far more compact, there being no occasion to remove onespool to replace another. It possesses a far greater variety of com-binations of length of wire, with the ability to increase currents of anyquantity or tension from zero to the maximum effect desired. The appa-ratus contains a rheostat in the battery circuit, modifying the electro-mo-tive force acting upon the primary field; a gear movement to regulate thecoil over, or remove it from the primary wire; a very rapid interrupter;. Fig. 60.—Paradic Battery (Mcintosh). slow automatic interrupter; switch for placing the same in operation; polechanger, and compound switch allowing of an instantaneous selection ofwire at will. The apparatus contains four dry cells for portable work; butfor office work and to get its best effects, fluid cells of a larger patternand less tendency to polarize are essential. Fig. 64 is a view of the right end of the coil, with the figures represent-ing in yards the length of the different combinations. The different sizesof the wires, Nos. 21, 32, and 36, are also designated. The various sec-tions of wire can be selected by placing the two arms upon any two but-tons, and whatever buttons the arms are placed upon, the length and sizesof wire as stamped between the buttons will be included in the circuit. APPARATUS FOR ELECTRO-THERAPEUTICS. 275 With this compound circle switch one can readily select the entire coilwith its varying sizes and length of
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1896
