. The Street railway journal . These bolts are neverintended to be removed, and so they are set up with great pres-sure and the ends are closely filed off to the nuts. Fig. 2, an en-graving of the lower half of an armature frame, displays its con-struction to good advantage. This frame is that of a single phasemachine and is similar in construction to those to be used at theCarbide Works. If the machine were to be two phase, there August, 1898.] STREET RAILWAY JOURNAL. 463 would be intermediate notches at 90 degs., with slots for the singlephase coils, and both sets of coils would have to be s
. The Street railway journal . These bolts are neverintended to be removed, and so they are set up with great pres-sure and the ends are closely filed off to the nuts. Fig. 2, an en-graving of the lower half of an armature frame, displays its con-struction to good advantage. This frame is that of a single phasemachine and is similar in construction to those to be used at theCarbide Works. If the machine were to be two phase, there August, 1898.] STREET RAILWAY JOURNAL. 463 would be intermediate notches at 90 degs., with slots for the singlephase coils, and both sets of coils would have to be slightly bentin order to avoid each other. The coils are wound on forms and are very heavily insulated, soheavily, indeed, that there is no necessity of insulating the arma-ture core in any way; the coils are slipped on directly. This con-struction renders the rapid removal and renewal of a coil verysimple. The bolts securing the two halves of the armature frametogether are external, thereby facilitating the dismantling of the. FIG. 5.—FIELD SPIDERS machine and making all the parts easily accessible. The ends ofthe protruding armature coil are protected by cast-iron plates oneither side, as shown in the general view of the machine. This latest essay of Prof. Short has proved remarkably success-ful. The first alternating machines, as designed and built at theWalker Works, immediately and satisfactorily responded to thedemands for which they were built, and were sold at once, andthe construction of others has been rapidly going forward. New Type of Electric Heater The accompanying engravings show a new type of electric heat-er recently placed on the market by the Gold Car Heating Com-pany of New York. As will be seen, the heater bears a generalresemblance to the well known heaters of this company, but anumber of improvements have been introduced which, it isclaimed, give a better circulation of air through the heater and divide the air into smaller particles than in the old arra
Size: 2225px × 1123px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
