. American engineer and railroad journal . ount of power neces-sary to operate all shop equipment driven by other desire to unequivocally endorse the substitution of electricpower for compressed .air wherever possible, and the develop-ment of electric drive for hoists, riveters, chipping hammers,drills, etc., makes it wholly practical to eliminate the majorityof pneumatic appliances. It is also desirable to distribute anumber of small compressors through the various buildings,these compressors to be electrically driven and arranged to auto-matically start and stop through pressure g
. American engineer and railroad journal . ount of power neces-sary to operate all shop equipment driven by other desire to unequivocally endorse the substitution of electricpower for compressed .air wherever possible, and the develop-ment of electric drive for hoists, riveters, chipping hammers,drills, etc., makes it wholly practical to eliminate the majorityof pneumatic appliances. It is also desirable to distribute anumber of small compressors through the various buildings,these compressors to be electrically driven and arranged to auto-matically start and stop through pressure governors. While thismethod may not be wholly feasible under present operating con-ditions, it would not only be feasible but strongly advisable ifthe compressed air consumption is greatly reduced by the sub-stitution of electrical equipment as above indicated. to the minimum. The staybolt chucks are readily removable,leaving the machine available for a variety of sensitive drillingwhen necessary. The many praiseworthy features of this new. machine and its capacity would indicate that it is an indispen-sable adjunct to a boiler shop, especially one engaged on loco-motive work. FOUR SPINDLE STAYBOLT DRILL In view of the recent recommendation of the Interstate Com-merce Commission in regard to the use of telltale holes in boilerstaybolts, the machine illustrated above is of particular interestat this time. Athough not a new tool in the strict sense of theword, as there are over a hundred in operation in various rail-road shops, this staybolt drill herein illustrated, a product of theFoote-Burt Company, Cleveland, O., has been re-designed totake care of increased strain which is inseparable from the useof high speed steel. The machine has a capacity of four 5/16 in. drills, and willtake in staybolts from J4 in. to 1% in. in diameter, and from3 in. to 15 in. long. Each spindle is provided with three inde-pendent speeds and has two changes of power feed. Powerfeed is equipped with au
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
