The pattern maker's assistant : embracing lathe work, branch work, core work, sweep work, and practical gear construction : the preparation and use of tools : together with a large collection of useful and valuable tables (1878)
Rose, Joshua · New York : D. Van Nostrand · leaf 227
ut and kept, so as to thoroughly season before being used. There should, when there is likely to be a demand for them, always be kept a spare set of cogs, so that they will be ready for use, well seasoned and less liable to shrink, and thus come loose in the mortises. When the cast wheel arrives… … 1)6 found that any of the mortises are "blind," that is, stopped by the arms of the wheel, as shown at A, Fig. 223, a circumstance which is avoided as much as possible in the designing of the wheel, a small hole must be made through the rim to admit of the i)assage of a M ire or screw. The
Patternmaking
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