Page:Popular Science Monthly Volume 92.djvu/233

 Popular Science Monthly

��the work, and to moving it to the machine employed for the next operation.

Prior to the first operation on any part, the necessary material must, of course, be in stock, or in "stores." To guard against any possibility of failure, it is well to have the material in "stores" a few days before it will be needed, say eight days, so another cage is mounted on the strip, eight days to the left of the first ope- ration cage. To the left of this "store" cage is an "order" cage. This "order" cage i s mounted such number of days to theleft of the "store" cage as may be needed for the filling of the purchas- ing agent's order. A few work days to the left of this "order" cage

is placed a requisition block, specifying the kind of material needed, to act as a guide for the purchasing agent so that he may make any necessary search of the market, or bargain for fair prices.

tape

���Operator seated before a from reports the numbers

��This completes the record of the required progress for Part B.

The requisite progress on every other part, whether a unit part or composed of several unit parts, is similarly mounted on its individual strip. This mounting of the control boards is permanent just as long as the same model of automobile is built and each strip contains full

directions for all opera- tions and acts required in the manu- facture of its particular part.

Mounted so as con- veniently to measure the location of the cages are tw^o "work- day" tapes. The upper tape is di- vided into consecutive work -day periods and is used to measure the distance of the various cages from the zero line. The lower tape is similarly divided, but marked so as to read in calendar work- days, i. e., the days of the month, omitting Sundays and holidays. A third tape, a

��"Control Board" figuring he should post for the day

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division to right each day. According to the "100" at its right end, one hundred cars a car. At the bottom of the control board are metal tapes showing calendar days

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