Fig. 11.

From 0 as a centre, describe a circle D E larger than the vessel; and from C as a centre, describe a circle A B the size of the vessel, then with the dividers the same as you described the circle the size of the vessel, apply them six times on the circumference of the circle larger than the vessel; for can-breasts describe the circle F G the size you wish for the opening of the breast.

How To Describe Bevel Covers For Vessels, Or Breasts For Cans

Fig. 20.

Construct a right angle A D B, and from the point C, the altitude height you wish the breast, erect a perpendicular line F; then on the line B, mark the point E one-half the diameter of the can; and on the line F, mark the point G one-half the diameter of the opening in the top of breast; draw a line N to pass through the points E and G produced until it intersects the line A; place one foot of the dividers at the point of intersection II, and place the other on the point E, and describe the circle E I K; span the dividers from the point II to point G, and describe the circle G L M; then span the dividers from the point D to E, and step them six times on the circle E I K, which gives the size of the breast. Remember to mark the lines for the locks parallel with the radii.