Spring toy - Scripcenco Angela

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My invention relates to toys primarily intended for amusement of children, but also for family use as parlor games and the like, and for advertising purposes. A purpose of my invention is to provide a helical spring toy which will transfer its turns from one end to the other in an entertaining manner when it is bent into general semi-circular form and the ends are moved up and down. A further purpose is to provide a helical spring toy which will walk on an amusement platform such as an inclined plane or set of steps from a starting point to successive lower landing points without application of external force beyond the starting force and the action of gravity. 7 A further purpose is to design a helical spring toy of essentially low natural frequency, suitably between and 100 cycles per minute, having substantially no compression between turns in closed position when no external force is acting, and having dimensions and proportions which permit manual handling. 7 A further purpose is to design a helical spring toy adapted to walk and oscillate, consisting essentially of a helical spring having substantially no compression or tension between turns in closed position when no external force is acting, and in which the spring cross section has substantially lower torsional stiifness than a square cross section of the same cross sectional area, thereby producing low natural frequency. A further purpose is to design a helical spring toy having substantially no compression or tension between turns when noexternal force is act ing, having a radial cross sectional dimension between 1.1 and 10 times (preferably between 2 r and 6 times, and most desirably about 4 times) the axial cross sectional dimension, with an outside diameter of coil between 4 and 100 times (preferably between 10 and 50 times, and most' and one and one-half times, and most desirably equal to) the diameter, the coil being capable of bridging an axial semi-circle without external force holding it in position. Further purposes appear in the specification and in the claims. This application is a continuation in part of my application Serial No. 625,996, filed November 1 1945, for Toy and process, copending herewith.