Handy man's workshop and laboratory . Fig. 330—Repairing a break at one end of the spring old clutch leather, lay it out flat, and use it as a pattern for thenew leather. (See Fig. 331.) As the leather will stretch some-what, it is not essential to have the new leather curve as muchas the old one. Cut the new leather about V2 inch short, and 394 HANDY MAN S WORKSHOP AND LABORATORY punch and countersink holes in its ends for the rivets, whose headsshould be below the surface of the leather. Soak the new leatherin water until it is thoroughly soft. Stretch it over the clutch,and put temporary ri
Handy man's workshop and laboratory . Fig. 330—Repairing a break at one end of the spring old clutch leather, lay it out flat, and use it as a pattern for thenew leather. (See Fig. 331.) As the leather will stretch some-what, it is not essential to have the new leather curve as muchas the old one. Cut the new leather about V2 inch short, and 394 HANDY MAN S WORKSHOP AND LABORATORY punch and countersink holes in its ends for the rivets, whose headsshould be below the surface of the leather. Soak the new leatherin water until it is thoroughly soft. Stretch it over the clutch,and put temporary rivets in the ends. Mark the central rivethole, remove from the clutch, and punch that hole. Put the leatheron the clutch again with temporary rivets, and punch and markthe remaining holes. When all have been punched and counter-. Fig. 331—Putting on a new leather sunk, rivet the leather in place. For this purpose it is necessaryto have a bar whose end diameter is about the diameter of therivet heads. This bar is used as an anvil against the rivet men are necessary, and the whole job, after the leather hasbeen taken out of the water, must be done quickly, else the leatherwill shrink so that it will not go on. REL1NING THE BRAKE SHOESThere is more to the care of the brake shoes than simply keep-ing them in proper adjustment. By degrees the materials of thefriction surfaces wear away, and the toggle or other mechanismby which the brakes are expanded or contracted reaches the limitof its efficient movement. It then becomes necessary to reline thebrakes, or to provide new brake shoes, according to the natureof the friction material. Usually the brake drum is a steel casting, HANDY MAN S WORKSHOP AND LABORATORY 395 but the shoes may be fiber, cast iron, bronze, or mixtures ofasbestos, camels hair, copper
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