Rip Saw: Diamond-Pointed Teeth Bevelled from One Face (Cassell's Cyclopaedia, 1904)

A less common way to sharpen a hand rip saw, given in Cassell's Cyclopaedia of Mechanics (1904) as one that "answers well in actual practice". Both edges of each tooth are bevelled from the same face, so every tooth comes to a long point like a diamond-pointed wood chisel with a left and a right cutting edge, the teeth alternating from side to side of the blade. Set as usual, with the flat side of each pointed tooth turned outward. Teeth a little longer than an equilateral triangle, with a longer side slope, cut much more sweetly. Tooth size, bevel angle and amount of set are not given; those are unknown here. Source: P. N. Hasluck (ed.), Cassell's Cyclopaedia of Mechanics vol. V (1904), p. 122. Picture: its figs. 1 and 2.