. Railway age gazette . -6 ■ - ^-t -T^^ a retaining ring that is screwed into the body of the chuckagainst a ^-in. dowel pin. This dowel fits in between the splitsleeves and prevents them from turning when the threadedsleeve is being screwed in or out. BORING B.\R HE.\D The single boring bar head shown in Fig. 5 is designed forlight work, such as truing up air pump cyhnders, and similar workwhere only light cuts are to be taken. The head is fastenedto the bar by means of a tapered split sleeve made of annealedtool steel, which is inserted in the head from the back Fig. 5—Single Tool Head
. Railway age gazette . -6 ■ - ^-t -T^^ a retaining ring that is screwed into the body of the chuckagainst a ^-in. dowel pin. This dowel fits in between the splitsleeves and prevents them from turning when the threadedsleeve is being screwed in or out. BORING B.\R HE.\D The single boring bar head shown in Fig. 5 is designed forlight work, such as truing up air pump cyhnders, and similar workwhere only light cuts are to be taken. The head is fastenedto the bar by means of a tapered split sleeve made of annealedtool steel, which is inserted in the head from the back Fig. 5—Single Tool Head for a Boring Bar ilar to the bolt chuck shown in Fig. 3. The inside is threadedto receive the sleeve, which is provided with a collar havingtwo /i-in. notches for a spanner wrench. The inside of this The head is bored 14 in. larger than the bar and with a 1/16in. taper from the back end. The sleeve is threaded on oneend with 14 threads per inch, and is screwed in a ring which February, 1914 RAILWAY AGE GAZETTE, MECHANICAL EDITION 91 lias a working tit in the counter bore in the tool head body,the sleeve being made with a taper on the outside to fit thetaper in the body. By screwing up on this ring by means of aspanner wrench, the sleeve is drawn into the head gripping theboring bar as tightly as desired, the split in the sleeve beinglarge enough to pass the key used for driving the head. The PmMrklng Flf
Size: 1989px × 1256px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1913
