. Railway mechanical engineer . chuck are designed to providegreater strength, simplicity and ease of operation tlian theoriginal chuck possessed, although these were the features ofthe original design. The McCrosky improved Wizard chuckconsists of only two main parts, a driving body with a Morsetaper shank to fit the drill press spindle, and a slotted collarto hold the collet up in the driving body. This collar isstraight and uniform in shape and is hardened all over. Thebayonet locking slots in the collar that admit the driving lugsof the collet are now so designed that the collet can be ins
. Railway mechanical engineer . chuck are designed to providegreater strength, simplicity and ease of operation tlian theoriginal chuck possessed, although these were the features ofthe original design. The McCrosky improved Wizard chuckconsists of only two main parts, a driving body with a Morsetaper shank to fit the drill press spindle, and a slotted collarto hold the collet up in the driving body. This collar isstraight and uniform in shape and is hardened all over. Thebayonet locking slots in the collar that admit the driving lugsof the collet are now so designed that the collet can be insertedor released with one hand without slowing or stopping themachine. No mechanical skill is necessary. To insert a tool theoperator simply pushes the collet into the revolving positive automatic latch locks it Releasing is likewise said to be rapid and easy. A slight pressure of thethumb and forefinger on the knurled collar of the chuck re-leases the collet instantly and allows it to drop into the opera-. McCrosky Wizard Quick-Change Chuck tors hands. All styles and sizes of McCrosky Wizard colletswill fit the new chuck. Double End Staybolt Threading Machine THE machine, illustrated in Fig. 1, is made by the Cleve-land Automatic Machine Company, Cleveland, Ohioand designed to thread reduced center forged or rolledlocomotive boiler staybolt blanks, on both ends at the sametime. By this method there is no loss of time passing the
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
