. Practical electricity in medicine and surgery. radic-Bath Apparatus. often desired. The manufacturers have supplied this in an ex-ceedingly useful switch-board, one of which is illustrated in This is made by the Mcintosh Galvanic and FaradicBattery Company, of Chicago. Portable Batteries.—The frequent necessity of applyingelectricity at the patients residence has stimulated instrument- PORTABLE BATTERIES. 225 makers to an active rivalry in making portable galvanic bat-teries. In addition to tbe desiderata, already mentioned, whichshould be possessed by a stationary battery, the port
. Practical electricity in medicine and surgery. radic-Bath Apparatus. often desired. The manufacturers have supplied this in an ex-ceedingly useful switch-board, one of which is illustrated in This is made by the Mcintosh Galvanic and FaradicBattery Company, of Chicago. Portable Batteries.—The frequent necessity of applyingelectricity at the patients residence has stimulated instrument- PORTABLE BATTERIES. 225 makers to an active rivalry in making portable galvanic bat-teries. In addition to tbe desiderata, already mentioned, whichshould be possessed by a stationary battery, the portable batterymakes another demand, namely, that it sbonld be at once excludes those elements whose greatest excellenceis their steadiness of action, namely, the Leclanche and thevarious sulphate of copper cells. Their size and weight pre-clude their use as portable batteries. The storage battery hasnot yet been sufficiently developed in this direction to furnish asufficiently high electro-motive force consistent with Fig. 184.—Mcintoshs Twelve-Cell Galvanic Battery. Hence, it also must be excluded from consideration in this con-nection. We are restricted, therefore, in making a choice ofcell for a portable battery to the bichromate cell, the bisulphateof mercury cell, and the chloride of silver cell. All of thesehave been used in constructing batteries, of which the followingfigures show useful designs. Bichromate Batteries.—The batteries shown in Figs. 184,185, and 186 are convenient and efficient in action, as tested bythe writer personally. The cells are of hard rubber or glass, andwhen the battery is not in use the elements are removed from 15 226 PRACTICAL ELECTRICITY IN MEDICINE AND SURGERT. the solution by lowering the tray, as in the Flemming andWaite & Bartlett batteries, or by placing them in empty com-
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectelectri, bookyear1890
