Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 431
Fig. 1298.—Enlarged Section of Jamb for Circle-on-Circle Door Frame. the key head should be tapered, to avoidweakening the head more than can beavoided, and the sides of the keys should becut to the same bevel as the jambs are workedto. The shoulders should also be cross-tongued and stopped inside,… … Fig. 1299.—Enlarged Section of Transom forCircle-on-Circle Door Frame. mentioned, double tenons are used for thetransom ; this is to avoid cutting the fibresat the root of the key, and the insides of themortices should come in line with the outsidelines of the key, and in thickness they shouldbe TV…
Carpentry · Joinery
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