Journal of the Franklin Institute; devoted to science and the mechanic arts (1826)
Franklin Institute (Philadelphia, Pa.) · Oxford, Eng. [etc.] Pergamon Press [etc.] · leaf 875
the proviso at the close of the section. 376 Practical and Theoretical Mechanics. To those who are unacquainted with Mint operations, it will be well toexplain, that the operation of milling has for its object, to throw up a thick-ened edge upon the blanks or planchets, previous to their being… … A classical tripod, of cast-iron, supports the table on which are placed thefeeding tubes and dies; through the centre of the stand a vertical shaftrises from the room beneath, on the lower end of which is a pulley and itsband, furnished with a clutch box, by means of which, movement is given,or…
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