Abstract: A strap is secured to the head of the hammer and interlocks with a strap on the handle of the hammer when the head is assembled with the handle. The two interlocking straps prevent the head from turning on the handle when the hammer is used.

Abstract: The heads of the hammer are molded or cast from soft material and are threaded onto opposite ends of a stud extending through a disc on the handle of the hammer. A sleeve nut is welded to a hard metal plate which is captivated within each head and which prevents the sleeve nut from working loose when the hammer is used. The plate is formed with wrenching flats to enable the head to be tightened on the stud. The disc is formed by using a portion of the handle as a die in a die casting machine and is rigidly supported by an integral rod which extends into the handle.

Abstract: Two reciprocating slides are biased toward payout positions by coiled compression springs which are located so as to reduce cocking and skewing of the slides as the slides move to and from their payout positions. Each spring is compactly located in an opening in its slide and is sandwiched between stationary plates disposed above and below the slide.