Abstract: A training aid designed to be used to instruct individuals in the proper technique of playing the game of football is described. The training aid includes an elongated strip of flexible material which is lined along both edges with strips of Velcro. In addition, the training aid includes a plurality of player position mats and play mats which are lined along one edge with a strip of Velcro. The elongated strip of flexible material represents the line-of-scrimmage and is positioned across a playing field or other suitable playing surface. The plurality of player position mats and play mats may be exactly positioned adjacent the line-of-scrimmage and may be removably affixed thereto by means of the respective Velcro edges.

Abstract: An implement for coordinating the colors of fabric and the like comprises a circular base portion of cardboard or other stable sheet material having therein a series of circular openings which are arranged in a circle concentric with the base member. Each of the openings is surrounded by an annular band of color, the colors of the band being selected in such manner that colors which blend are disposed adjacent one another while contrasting colors are located at the opposite side of the base member. Each of the annular color bands is divided into a plurality of sectors which are shades of the respective color. A central indicator member is rotatably mounted on the base concentric therewith and is of smaller diameter than the base member so as to be located inside the circle of openings and their respective color bands. The indicator member bears indices indicating the key color, adjacent blending colors and opposite contrasting colors.

Abstract: There is disclosed a combination chalk holder and cue slide adapted to be worn as a ring on the player's finger. The device comprises a band adapted to encircle a finger, the band comprising a means to releasably engage a piece of chalk, means to fasten the ends of the band to form a ring around the finger and a strip of material such as felt which serves as a cue slide.

Abstract: A reversible transfer assembly for use in recording credit transactions is disclosed herein. The assembly hereof is particularly useful in conjunction with credit card "zip-zap" machines as well as hand written transactions.

Abstract: In a passenger propelled swinging ride assembly, a variable counterweight employing two eccentrically weighted wheels driven in opposite directions to effect a variable counterweight.

Abstract: A cartridge for an ink or carbon ribbon of an office machine comprises a container of parallelepipedal form in which a pair of spools are rotatable for the ink or carbon ribbon. A part of the ink or carbon ribbon extends through one aperture to the exterior of the container and returns to the interior through another aperture. Two arms are associated with the two apertures and project from the exterior of the container. The arms support the portion of the ink or carbon ribbon exterior of the container, away from the container, when the container is removed from the machine and makes the insertion of the ink or carbon ribbon arms in a lift ribbon guide upon mounting of the container on the same machine. The container is further provided with a window disposed over the periphery of one of the two spools for manually rewinding the ink or carbon ribbon on the spool after the container is mounted on the machine.

Abstract: A device adapted to provide a visual display under the influence of an exterior magnetic field which comprises a plurality of rotatable, multi-colored, non-magnetically interactive, permanently magnetized micromagnets disposed in a cavity within a body having a transparent surface and a plurality of relatively small compartments within the cavity. The device is illustrated by a sheet containing such micromagnets between the thin cavity of the front and rear surfaces of the sheet where the relatively even dispersion of the micromagnets in the sheet is maintained by such compartments whose barriers minimize displacement so that physical pressure exerted on the sheet, such as by a twist or flex, does not substantially alter the even dispersion of the micromagnets.