Figure 1 of U.S. Patent No.1,041,451 (back)
Figure 2 of U.S. Patent No.1,041,451 (back)
Figure 3 of U.S. Patent No.1,041,451 (back)
Figure 4 of U.S. Patent No.1,041,451 (back)
Figure 5 of U.S. Patent No.1,041,451 (back)
Figure 6 of U.S. Patent No.1,041,451 (back)
Figure 7 of U.S. Patent No.1,041,451 (back)
Figure 8 of U.S. Patent No.1,041,451 (back)