De La Cononnerie Ou Fabrication des Canons de FusilBy M. Ronchard-Siauve
http://books.google.com/books?id=uedDAAAAIAAJ&pg=RA1-PA202 Annales Socit d'agriculture, industrie, sciences, arts et belles-lettres du dpartement de la Loire, 1864
http://books.google.com/books?id=uedDAAAAIAAJTurkish or Curly Damas
This Damas was invented first and is still one of most beautiful which can be made. One distinguishes two varieties from curly Damas: the large one and the small one. The piece to make large Damas is composed
35 to 40 alternees half iron half steel, one welds with the hammer as for the ruban, but then with the of place; to stretch in rods the pieces divided to make barrels directly of them; one stretches them beforehand out of square rods of 5 lines or 12 mm. on side.
The manufacture of the curly Damas always was improving at these last years, where the one managed to make of the Damas of a finess and of one rgulant really admirable. To obtain this result, nevertheless always about same manner is operated; only, one composes the pieces with some alternees of less and one makes the rods much thinner. For the Damas very fine, one reduces the rods in 2 square lines or 4 mm 1/2 of dimensioned, and the torsion of' is made; a perfect regularity; also to make the ribband, the five rods are put, and to obtain the wanted length from it, as far as is needed; with
twenty-five rods of 5 feet or l meter, 65 length.
