The manual training school, comprising a full statement of its aims, methods, and results, with figured drawings of shop exercises in woods and metals . Chap, m.] FORGING EXERCISES. 97 little too long. For the sake of learning the length of theportion required for the hook, as well as the effect of bending,it is well to execute first in lead. No. 19. The welded angle. Stock, two 1 X ^ exercise shows a second way of making the piece shown inFig. 75, No. 7. The scarfing of the two ends should give themvery oblique slopes without shoulders. Tt would be well to. Fig. practice the scarfin
The manual training school, comprising a full statement of its aims, methods, and results, with figured drawings of shop exercises in woods and metals . Chap, m.] FORGING EXERCISES. 97 little too long. For the sake of learning the length of theportion required for the hook, as well as the effect of bending,it is well to execute first in lead. No. 19. The welded angle. Stock, two 1 X ^ exercise shows a second way of making the piece shown inFig. 75, No. 7. The scarfing of the two ends should give themvery oblique slopes without shoulders. Tt would be well to. Fig. practice the scarfing on two pieces of lead. With a good weld,this makes a much stronger piece than the bent angle. Theteacher should test the strength of Nos. 7 and 19 in the presenceof his class. No. 20. A straight weld. Stock, two pieces of rod ofequal size. When finished, the piece should be of nearly uni-form size and should show no weld marks. This exercise,like the last, requires two people, and the difficulty of bringingthe two pieces to the anvil at a proper heat and at the same 98 THE SECOND, OR MIDDLE YEAR. [Chap. ill. time is one which must be met to be appreciated. As weldsare more or less imperfect, it may be well to leave the cross-section a little large at the welded point. Nos. 21 and 22. Bolt heads. There are two ways ofmaking a bolt by hand, and this exercise should be way is to use a square rod larger than the body of therequired bolt, draw out for the body, and upset for the is one exercise. The other way is to use stock of the sizerequir
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmanualt, bookyear1906
