Dick Johnson submitted this entry from his Encyclopedia of Coin and Medal Terminology. Thanks. -Editor
Canneluring Machine. A mechanical device for applying a groove to the edge of blanks prior to their being struck; the groove usually contains
ornamentation - engrailment - or lettering. Blanks are rolled under pressure between two grooved bars, one of which has lettering or design engraved therein. The lettering or
ornamentation is imparted to the edge of the blank in its depressed groove while the edge is somewhat smoothed (the edge may then become slightly smashed by the collar when the
piece is subsequently struck in the coining press).
The word comes from the French, canneler, a groove especially in a cylinder. An early canneluring machine for coining purposes was invented by Jean Castaing, thus some
are called castaing machines. Modern upsetting machines accomplish a similar smoothing of the edge (but without the groove) and were undoubtedly derived from these early
edge-treating machines. See edge, engrailment.
Book lovers should be word lovers as well.
I wasn't aware of that term! Thanks, Dick. Learn something new every week... -Editor
Looking for the meaning of a numismatic word, or the description of a term? Try the Newman Numismatic Portal's Numismatic Dictionary at: https://nnp.wustl.edu/library/dictionary
Or if you would like a printed copy of the complete Encyclopedia, it is available. There are 1,854 terms, on 678 pages, in The Encyclopedia of Coin and Medal
Technology. Even running two a week would require more than 19 years to publish them all. If you would like an advance draft of this vital reference work it may be obtained
from the author for your check of $50 sent postpaid. Dick Johnson, 139 Thompson Drive, Torrington, CT 06790.
Wayne Homren, Editor
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