. Railway mechanical engineer . Fig. 2—Feed Change Gear Box and Feed Clutch Gear Box Fig. 3—Rail Elevating Device and Spring Counterweight for Ram June, 1922 RAILWAY MECHANICAL ENGINEER 345 which gives ample clearance for large tools when swungover the slide. Rams on the plain head swivel 45 side of the vertical position, graduations on the swivel,indicating the angle. The rams have a vertical and angulartravel of 30 in. .gular adjustment of the ram is accom-plished by means of a worm and segment both wholly en-closed in the head. A rapid and convenient means for. Fifl. 4—Colburn Mi
. Railway mechanical engineer . Fig. 2—Feed Change Gear Box and Feed Clutch Gear Box Fig. 3—Rail Elevating Device and Spring Counterweight for Ram June, 1922 RAILWAY MECHANICAL ENGINEER 345 which gives ample clearance for large tools when swungover the slide. Rams on the plain head swivel 45 side of the vertical position, graduations on the swivel,indicating the angle. The rams have a vertical and angulartravel of 30 in. .gular adjustment of the ram is accom-plished by means of a worm and segment both wholly en-closed in the head. A rapid and convenient means for. Fifl. 4—Colburn Mill with One Turret and One Swivel Head setting the ram at any desired angle is thus afforded, alsoacting as a safety lock to prevent tipping when the swivelclamping bolts are loosened. The complete control for each head and ram for bothfeed and rapid traverse is obtained by a single lever. Thelever is always thrown in the direction of the movementdesired, whether it be feed or traverse. This control is sodesigned that when the rapid traverse is engaged the feedis disengaged and vice versa. Furthermore, the rapid traverse always operates in the opposite direction from thefeed in each slot shown on the control plate. Sixteenchanges of feed in horizontal, vertical or angular directionare obtained ranging in geometrical progression from .006to 1 in. per revolution of the table. The feed change gear box, illustrated at .4 fig. 2, showsthe cam arrangement for shifting the gears. Immediatelyto the left of the open gear box is the feed multiplying gearwhich works in conjun
Size: 1484px × 1684px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
