Handy man's workshop and laboratory . ed to the bar B, had six dovetailed HANDY MAN S WORKSHOP AND LABORATORY 171 jnfi slots cut across its periphery. These slots were used for holdinghard-wood blocks,-^, which fitted closely into the bore and guidedthe bar. A boring tool was clamped in the groove across thehead, as shown, at C. The split sleeve D, which was fastened tothe lathe carriage, supported one end of the boring bar, and thesleeve was clamped to the bar when boring, as the feeding wasdone by the lathe carriage. The bar was also supported by asteady-rest, as shown at E. Before the borin
Handy man's workshop and laboratory . ed to the bar B, had six dovetailed HANDY MAN S WORKSHOP AND LABORATORY 171 jnfi slots cut across its periphery. These slots were used for holdinghard-wood blocks,-^, which fitted closely into the bore and guidedthe bar. A boring tool was clamped in the groove across thehead, as shown, at C. The split sleeve D, which was fastened tothe lathe carriage, supported one end of the boring bar, and thesleeve was clamped to the bar when boring, as the feeding wasdone by the lathe carriage. The bar was also supported by asteady-rest, as shown at E. Before the boring bar was placed inposition, the end of thecylinder was trued up,as the outer end of thecylinder had to be sup-ported by a steady-restF. In starting the cut,it was necessary tosteady the bar by clamp-ing the sleeve D close tothe boring head; butwhen the head had en-tered the cylinder, thesleeve was moved out asfar as the bar wouldpermit, and againclamped to the bar. Thehard-wood blocks re-ferred to were used forthe finishing cut. The. Fig. 153— The adjustable centers
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Keywords: ., book, bookcentury1900, bookdecade1910, booksubjectworkshoprecipes
