from The Century Dictionary.

  • noun In gold-milling, an amalgamated copper plate attached to the chuck-block on the inside of the mortar of a stamp-battery, used to collect the gold.


Sorry, no etymologies found.


  • It is obvious, also, that the triangle may be used to draw slots radiating from a centre, as in Figure 176, where it is desired to draw a chuck-plate having 6 slots.

    Mechanical Drawing Self-Taught


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