The mechanic's tool bookWith practical rules and suggestions for use of machinists, iron-workers and others . Fig. 18. these rings so as to be held close to the face ofthe plate by three bolts which pass through theouter circumference of the rings, equi-distant fromeach other, and screw into the face-plate. Byhaving the holes in the central portion of theserings of larger or smaller diameter, any such workas small pulleys, plates or disks, can be held andworked with ease. In case a ring is spoiled orbroken, it can be renewed at little more than thecost of the cast-iron. Another method of formi
The mechanic's tool bookWith practical rules and suggestions for use of machinists, iron-workers and others . Fig. 18. these rings so as to be held close to the face ofthe plate by three bolts which pass through theouter circumference of the rings, equi-distant fromeach other, and screw into the face-plate. Byhaving the holes in the central portion of theserings of larger or smaller diameter, any such workas small pulleys, plates or disks, can be held andworked with ease. In case a ring is spoiled orbroken, it can be renewed at little more than thecost of the cast-iron. Another method of forming a chuck to hold apulley or disk through which there is a circular orirregular formed aperture is very simple and well LATIIE CHUCKS. 79 adapted for general work. The representationwhich we give in Pig. 18 readily explains it. Intoa face-plate, which is fitted to the lathe, insert a. Fig. 19. steel spindle, which must be turned so as to runtrue; upon the farther end of this spindle cut astrong thread and fit a nut to it; then fit a cone ofiron or brass upon this spindle so that there willbe no shaking or vibration ; have several washersor disks which also fit the spindle and are of anexternal diameter about the same as the base ofthe cone. To use this fixture to turn or face up apulley or disk, remove the nut, washers, and cone,hold the work to be wrought upon next to theplate with the spindle through its aperture ; placethe cone so as to enter the aperture, which willprobably be longer than the apex of the cone ;place a washer or two against the base of the coneand screw the nut against the washers. As oneside of the work rests against the face of the plate,the work is kept true by the cone in its centralopening. This will be found an easy way of ad- 80 mechanics tool book. justing and an efficient mode of holding manythings that need to be quickly placed in posi
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1868
