Abstract: A drum hoop for a musical drum, at times referred to as a "counter hoop," which hoop includes a reinforcing channel member and a reinforcing rim. The drum counter hoop retains a drum head with an associated locking member, or ring, by fastening lugs or the like secured to the drum shell and by suitable fastening means such as threaded bolts with nut-type heads thereon, sometimes referred to as tension screws, or rods, which engage with the hoop. The lugs are internally threaded or provided with extensions for threads to engage with the bolts. The drum hoop and drum shell are, therefore, provided with means for adjusting or changing the tension of the drum head by tightening or loosening the bolts which changes the position of the hoop and the drum head locking member with respect to the drum shell. The reinforced construction permits the drum head to be provided with a very high tension without bending or breaking the drum hoop.

Abstract: An outrigger holder assembly for a plurality of percussion type musical instruments including at least one bass drum and one other percussion musical instrument such as a smaller drum or a cymbal, wherein a stable and multi-purpose holder includes an adjustable positioning means for the bass drum which is to be placed on a suitable supporting surface such as a floor and also includes a plurality of slidable and pivotally connected shafts, rods or extension, the lower of which also is supported on the floor. One or more smaller drums than the bass drum or a cymbal may be utilized with the upper extension. Numerous pivoted connections are provided to position parts of the assembly at various desired angles from each other and one adjustable assembly is provided for raising or lowering the height of the drums or cymbal.

Abstract: A swivel hook assembly for use primarily for attaching musical instruments, such as a drum or a pair of drums or other percussion instruments, to the torso of a person, so that the person has both hands free to grasp drumsticks or mallets to play the instruments, particularly when marching. The entire assembly is preferably formed from stamped metal parts and is provided with a slot forming member through which a carrying strap or harness may pass, which slot forming member is provided with a pair of openings at its extremities for the reception of hooks usually attached to straps surrounding the torso of the person playing the instruments. A strap extending across at least one of the shoulders of the person passes or is looped through the slot to properly position the assembly.

Abstract: A musical drum consisting of a generally cylindrical drum shell having openings at its upper and lower ends with a vibratable drum head covering at least the upper opening and a sound projector positioned below the lower opening, which sound projector is substantially a semi-hemisphere with an upper opening therein disposed adjacent the lower opening in the drum shell and with a horizontal opening therein facing in a direction substantially perpendicular to the openings in the drum shell. The half hemisphere sound projector may extend beyond the vertical center line of the shell and may be detachably secured to the shell and may be adjustable radially 360.degree. with respect thereto.

Abstract: An attachment for artificial arms, particularly for multiple arm amputees, to enable the amputee to wash all parts of his or her body. The washing elements are secured to artificial arms which are adapted to be secured to the live portion of each arm of the amputee.

Abstract: A drum shell for musical instruments formed of clear plastic material such as methyl methacrylate from hollow cylindrical sections joined together wherein a source of illumination is secured to the drum shell by brackets which are, in turn, secured to the drum shell opposite standard lugs for attaching the head of the drum and wherein the source of the illumination is an elongated tubular element or elements which are positioned inside the shell substantially adjacent the place where the sections of the shells are secured together.

Abstract: The method of manufacturing shells of plastic material, such as methyl methacrylate, for percussion musical instruments. The shells are formed from flat pieces of plastic material which may be clear plastic, transparent colored or opaque plastic material of one or more colors. The invention contemplates providing an infinitesimal number of color design combinations. After the pieces of plastic material are cut, prepared and fastened together by novel methods, the material is formed into a cylindrical product which is joined at one location to provide an integral shell. By cutting the flat pieces of plastic material in various ways and joining them together, an extremely wide range of different visual designs are produced.

Abstract: This invention relates in general to card filing devices and more particularly to a card file case comprising a one piece receptacle for the cards to be filed with angled projections at the front and back of the receptacle which are an integral part thereof for retaining the cards in an angular position from the verticle.