The manual training school, comprising a full statement of its aims, methods, and results, with figured drawings of shop exercises in woods and metals . e employed in this exercise. The aim in filing is to produce plane facesto the slot, parallel tothe sides and ends ofthe piece. All the facesexterior as well as in-terior are to be finishedby hand. The exerciseis very difficult. Onlyfair results are to berequired. The skill ofan experienced workmanis not to be 7. (Fig. 132.) Similar to a valve seat. Planing, chip-ping, and filing. This exercise involves some of the preceding,with
The manual training school, comprising a full statement of its aims, methods, and results, with figured drawings of shop exercises in woods and metals . e employed in this exercise. The aim in filing is to produce plane facesto the slot, parallel tothe sides and ends ofthe piece. All the facesexterior as well as in-terior are to be finishedby hand. The exerciseis very difficult. Onlyfair results are to berequired. The skill ofan experienced workmanis not to be 7. (Fig. 132.) Similar to a valve seat. Planing, chip-ping, and filing. This exercise involves some of the preceding,with more difficulties in adjusting the piece in the planer. Thepiece is used severalyears in year the dimen-sions of the slots areincreased, while theexterior dimensions arediminished. All thesurfaces worked are tobe left true and pol-ished. The stock tobegin with was a roughiron casting, abouteight inches long. No. 8. Chipping offrivets. See Fig. 82among the forging ex-ercises. Last year thestudent put in thesesix rivets to the best of his ability; he is now to learn how andwith what labor they may be cut out and the plates sent back. Fig. 132. Chap. IV.] MACHINE-SHOP EXFAICISES. 147 to the forging-shop to be re-riveted. With care the drilledholes may be left uninjured, and the plates may be used overand over again for sev-eral years. No. 9. The dog. SeeFig. 90 among the for-ging exercises. The mainshank is now to be cen-tered, the head dressed,drilled, tapped, and fur-nished with a steel set-screw with a hardenedpoint. The dog will thenbe available for use in thelathe. If the supply ofdogs is ample, a new ex-ercise in drilling may besubstituted. No, 10. The pin andflanged nut. Fig. 133gives two views of thepin, and a section of theflanged nut. The mate-rial is all cast-iron. Theexercise contains a greatvariety of points, and callsinto use many tools andprocesses. Both threadsare cut on the lathe, andall surfaces are to be fin-islied. It is obvious thatthe pin may
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmanualt, bookyear1906
