. Appleton's dictionary of machines, mechanics, engine-work, and engineering. 34G0. The disk b is held in its place merely by friction generated by the pressure of the ring a; this ringis shown removed in Fig. 3465, in order to show the graduation of the disk c, which is bolted to thedisk a, and carries in one portion of its circumference a screw d. This screw passes through the exter-nal ring e, and is screwed into the stop c, so as to fix the latter in any required division of the plate 6. In cutting a multi-threaded screw by this apparatus, it takes the place of the common chuck, theworkman
. Appleton's dictionary of machines, mechanics, engine-work, and engineering. 34G0. The disk b is held in its place merely by friction generated by the pressure of the ring a; this ringis shown removed in Fig. 3465, in order to show the graduation of the disk c, which is bolted to thedisk a, and carries in one portion of its circumference a screw d. This screw passes through the exter-nal ring e, and is screwed into the stop c, so as to fix the latter in any required division of the plate 6. In cutting a multi-threaded screw by this apparatus, it takes the place of the common chuck, theworkman fixing his work to it, by means of the radiating screws in the tubular portion of 6. Supposing it is required to cut a triple-headed screw, the first operation which is necessary is thedetaching of the stop c from the disk, so that the latter may be turned round alone, until the division 0comes opposite the hole in the external ring seen at <?, in Fig. 8400 ; the screw J is then adjusted BO asto connect the division-plate with the disk a, and the first thread of the in
Size: 1217px × 2053px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
