. Electric railway gazette . FIG. I.—GENERATOR WITH ARMATURE AND BRUSHES REMOVED. which has very short radial projections, faced off tomake good magnetic contact; this construction allowsthe removal of any magnet core and coil without remov-ing or disturbing the armature. The armature and commutator are mounted upon acast-iron sleeve independent of the shaft, so that in caseof accident to the latter it may be removed bodily with-out disturbing in the least the armature core, coils, orconnections. The armature is slot-wound with a flex-ible bar system of conductors which greatly facilitatesthe
. Electric railway gazette . FIG. I.—GENERATOR WITH ARMATURE AND BRUSHES REMOVED. which has very short radial projections, faced off tomake good magnetic contact; this construction allowsthe removal of any magnet core and coil without remov-ing or disturbing the armature. The armature and commutator are mounted upon acast-iron sleeve independent of the shaft, so that in caseof accident to the latter it may be removed bodily with-out disturbing in the least the armature core, coils, orconnections. The armature is slot-wound with a flex-ible bar system of conductors which greatly facilitatesthe handling of the coils and contributes to the coolrunning of the machines. Among other good features which go to make up an excellent combination are low magnetic density through-out the field-magnet circuit ; low and current density inarmature conductors; large ratio between field andarmature ampere-turns ; the simplest of brush-holdersand general arrangement ; self-aligning and oiling. -GENERATOR DISMANTLED. journals which do not generously distribute oil whereits absence is preferable; and moderate speed. Themachines are built for belt-driving or direct connection,as maybe desired. The Haller Boiler-Tube Cleaner. We illustrate herewith the Haller boiler-tube cleaner,which is being put on the market by the McClain Manu-facturing Companjr, of Pittsburgh, Pa. Boiler-tubecleaners, as a rule, are provided with springs to force thearms apart, and the consequence is that when the tool isused in a tube and brought in contact with an unusuallyheavy deposit of scale, these springs are apt to contractsufficiently to permit the cleaner to pass over an obstruc-tion without removing it. The Haller tube cleaner pro-vides for such cases as this, and is equally applicable to
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1895
