. Railway age gazette . t —2f^- SecHon £-F. T1»i T —r -/i-H -J i • t v^ ■—■-— •7 ■ ,1 4 ^ SecHon 2—Sections Through Three Tool Boring Head. Secfion C-D. the head. This is done so that the tool may be removed and danger of the operator being caught m the machmery. Theinserted in the opposite side for facing off the back end of the body of the chuck is made to f^t the spmdle of the lathe, whilework. The block back of the tool P is tapered so that by screw- the opposite end is made hexagonal m shape and H m. larger 89 90 RAILWAY AGE G-\ZETTE, MECHANICAL EDITION Vol. 88, No. 2 than the he
. Railway age gazette . t —2f^- SecHon £-F. T1»i T —r -/i-H -J i • t v^ ■—■-— •7 ■ ,1 4 ^ SecHon 2—Sections Through Three Tool Boring Head. Secfion C-D. the head. This is done so that the tool may be removed and danger of the operator being caught m the machmery. Theinserted in the opposite side for facing off the back end of the body of the chuck is made to f^t the spmdle of the lathe, whilework. The block back of the tool P is tapered so that by screw- the opposite end is made hexagonal m shape and H m. larger 89 90 RAILWAY AGE G-\ZETTE, MECHANICAL EDITION Vol. 88, No. 2 than the head of the largest bolt to be turned. The head ofthe bolt is held in a sleeve that fits in the chuck. These sleevesare made to accommodate the different sizes of bolts and whenthe bolts are made on bolt machines the heads will be uniform,so there will be no trouble in fitting them in the sleeves. Thethreaded sleeve is used when it is desired to turn a bolt with acountersunk head. The sleeves are made }i in. larger than Ixnff^ frofn shoatder Mend of£f>ind/e pJ^^ cisarance
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1913
