Scientific American Supplement, No. 315, January 14, 1882

by Various

BAD FALLS IN BENDS.

The fall given in bending lead pipes should be considered of quite as much importance as making the bends of equal thickness especially for pipes, as shown in Fig. 49. In this Fig. you have a drawing of a bad bend. From A to B there is no fall whatever, as also from B to C; such bending is frequently done and fixed in and about London, which is not only more work for the plumber, but next to useless for soil-pipes. Fig. 50 shows how this bend should be made with a good fall from A to J, also from M to N; the method of making these bends requires no further explanation. R, P, and K are the turnpins for opening the ends, the method of which will be explained in a future paragraph on "Preparing for Fixing."

FIG. 49.

FIG. 50.