. American engineer and railroad journal . FUi. 21.—THE BICKFORD R.\DI.\L DRFLL. EQUIPPED WITH VARIABLE-SPEED GEAREDDRIVE AND BICKFORD DRILL AND TOOL COMPANT. on page 143 (Fig. 18) of the preceding article of this series,which mechanism was, we are informed, suggested by thespeed box used by the Bickford Company, who were the firstto make use of this type of mechanism. Friction clutches areused in this device to permit clutching and disengagementwithout noise or shock while the machine is running. It isarranged so that each speed transmits to the spindle more thandouble the pulling po
. American engineer and railroad journal . FUi. 21.—THE BICKFORD R.\DI.\L DRFLL. EQUIPPED WITH VARIABLE-SPEED GEAREDDRIVE AND BICKFORD DRILL AND TOOL COMPANT. on page 143 (Fig. 18) of the preceding article of this series,which mechanism was, we are informed, suggested by thespeed box used by the Bickford Company, who were the firstto make use of this type of mechanism. Friction clutches areused in this device to permit clutching and disengagementwithout noise or shock while the machine is running. It isarranged so that each speed transmits to the spindle more thandouble the pulling power of the next faster two devices thus afford a possible variation of sixteen. FUi. 22.—VIEW OF THE M.\IK DRIVE SPEED UUX, THESLOT ARRANGEMENT FOB CONTROLLING THE FOURCLUTCHES WITH ONE LEVEB. 24.—VIEW OF THE BACK GEAR BOX ON THE ARM. THISMECHANISM IS DRIVEN THROUGH A SPLINED SHAFT ATTHE REAB OF THE COLUMN. Mat, 1903. AMERICAN ENGINEER AND RAILROAD JOURNAL. 179 B C
Size: 2448px × 1021px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
