American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 274
he blanks to be cut. These wheel blanks arepunched, and the arms crossed out by meanstoo well known to need description. The man-drel upon which the blanks are strung for cut-ting is peculiar, being a hollow arbor, very firmand massive, except tho part upon which theblanks are placed, which is… … blank to pass into it. Fig. 2 shows an endview of this mandrel, and fifty or a hundredblanks, as the case may be, are slipped into, orupon this, forming, when secured in place, asolid stack. As will be seen, there is not theslightest opportunity for them to slip or becomemisplaced when being cut,…
Clocks and watches
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