. American engineer and railroad journal . FIG. 9.—EIGHTH EXERCISE—A PLANER BLOCK. compartively simple and yet requiring more or less thought onthe part of the student in order to lay it out correctly. Exercise fourteen, Fig. 11 (a hose gasket), is the first one 376 AMERICAN ENGINEER AND RAILROAD JOURNAL. requiring the use of the compass; one missing dimension is tobe supplied, but this is obtained by calculation and not fromthe actual part, although the apprentice has this before himwhile working. In exercise fifteen, Fig. 12 (a vibrating cup), sectioning is pi:.. Plan H?re muiptele \ i
. American engineer and railroad journal . FIG. 9.—EIGHTH EXERCISE—A PLANER BLOCK. compartively simple and yet requiring more or less thought onthe part of the student in order to lay it out correctly. Exercise fourteen, Fig. 11 (a hose gasket), is the first one 376 AMERICAN ENGINEER AND RAILROAD JOURNAL. requiring the use of the compass; one missing dimension is tobe supplied, but this is obtained by calculation and not fromthe actual part, although the apprentice has this before himwhile working. In exercise fifteen, Fig. 12 (a vibrating cup), sectioning is pi:.. Plan H?re muiptele \ irw. F1G. 10.—EXERCISE THIRTEEN—A TOOL JIG. introduced for the first time. In the following exercise, (a handle plate), the student is asked to draw a sectionalview without assistance. The criticism may be made that the exercises are too simpleand that the progress is slow, but no one interested has as yetcomplained of this and experience has demonstrated that everystep has been needed; in fact, when the course was revised andrearranged some time ago it was made even more simple than < , TV _Draw View HereFirst N H Snpply Missing DimensionFIG. II.—EXERCISE FOURTEEN—A HOSE GASKET. when first introduced. It has been found advisable to cut themore complicated models into two or three sections, and , 15 and 16 are photographs of several of the models, begin-ning with exercise fourteen, showing how some of them havebeen cut into sections at the Brightwood school. These viewsalso give some idea of the progress made during the earlierpart of the course. The figures
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
