. Railway mechanical engineer . Fig 3—Bullard Independent Face Plate Jaw use of two driving gears, rigidly keyed to the drive shaft in-stead of sliding upon it. The clutch gears have internal teethmeshing with spur gears and fonn a positive lock. The gearsare alf of relatively greater size and so guided upon theirmating gears as not to produce braking shocks when plain table with radial T-slots, three-jaw combination. Fig. 4—General Dimensions of Independent Face Plate Jaw clmck, or four-jaw independent chuck. nia\- be provided withthe 44-in. Maxi-Mill. Both the three and four-jaw ch
. Railway mechanical engineer . Fig 3—Bullard Independent Face Plate Jaw use of two driving gears, rigidly keyed to the drive shaft in-stead of sliding upon it. The clutch gears have internal teethmeshing with spur gears and fonn a positive lock. The gearsare alf of relatively greater size and so guided upon theirmating gears as not to produce braking shocks when plain table with radial T-slots, three-jaw combination. Fig. 4—General Dimensions of Independent Face Plate Jaw clmck, or four-jaw independent chuck. nia\- be provided withthe 44-in. Maxi-Mill. Both the three and four-jaw chucksare powerful and have been developed to meet the exactingre<iuircments of the vertical turret lathe. The chuck bodiesare heavilv jiroportioned to avoid distortion and operatingIjarts are made of selected materials best suited to the servicerequired. Tlic -liding jaws are of forged steel accuratelyfitted to the chuck body and special arrangement is made to))revent foreign matter getting into the operating mechanism,which is packed with non-fluid oil and graphite. The topjaws are adjustalile. mounted on sliding members and may1)6 reversed or removed readily. June, 192C RAILWAY MECHANICAL ENGINEER 413 In case odd shaped pieces are to he machined, or worktiiat is off center, the best arrangement is to use independentface phite jaws in conjunction with a plain table. Thesejaws, one of which is illustrated in Figs, o
Size: 2097px × 1191px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
