. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . heads except. T, as these dropthrough the slots. One man v,-ill attendten machines, and each turn out 8,000fs-bolts in 10 hours. The nut tapping machine is equally in-genious and somewhat similar in are four tapping spindles in thiscase, each with lead screws (the Acmeidea in staybolt cutter it will be remem-bered), to insure perfect threads. Aswith the bolt cutter, they return at doublespeed, threading 4 nuts at every mechanism is very accessible for in-spection. A
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . heads except. T, as these dropthrough the slots. One man v,-ill attendten machines, and each turn out 8,000fs-bolts in 10 hours. The nut tapping machine is equally in-genious and somewhat similar in are four tapping spindles in thiscase, each with lead screws (the Acmeidea in staybolt cutter it will be remem-bered), to insure perfect threads. Aswith the bolt cutter, they return at doublespeed, threading 4 nuts at every mechanism is very accessible for in-spection. A very simple form of tap is used whichcan be made at a much lower cost thanthe ordinary nut tap. Provision is madefor adjusting the distance the taps aredriven in before reversing, to suit dif-ferent thicknesses of nuts. The nut blanks are olaced in the hop-per, which is divided into a series of cellsby radiating webs. The nuts are dis-charged on a revolving plate which throwsthe nuts to outer edge by centrifugal forcewhere they find their way into the fourchutes leading to the taps. At the lower. ACMK BOLT THREADER. end of the chutes they are pushed to thetaps, held during the threading and arcejected after that operation. Here, too, is the device for relievingthe nut feed should a ragged nut or otherobstacle find its way into the action of this is the same as in theother machine, and effects only the ob-structed chute. There is also relief toprevent tap breakage. In fact the ma-chines are all that one would expect tosee from this firm, which has a reputationof high order for machinery of this kind. The range of the nut machine is thesame as the other, and the capacity. 16,000J^-nuts per day of 10 hours. One mancan attend 10 machines, which makes anenormous output per man each day.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
