Apparatus for drawing compound designs, with offsetting, size-varying, skewing, and distorting adjustments

An amusement apparatus for use with a drawing medium and implement to draw a compound design made up of multiple angularly offset drawings of a particular complete continuous and closed design;

• said apparatus comprising:
• a base;
• a rotary carriage, for carrying such a drawing medium, mounted to the base for operation through a small number of rotations to form a complete closed design;
• a drawing-implement are having:
• at one location along the arm, a drawing-implement holder disposed generally adjacent to the carriage for marking by such an implement, when in place in the holder, on such medium when in place on the carriage,
• in another location along the arm, a motion-imparting fitting, and
• at a third location along the arm, a longitudinal track;
• means, mounted to the base, for defining an arm-pivot axis fixed relative to the base, and for engaging the track;
• and
• means, supported from the base, for mechanically linking the carriage with the motion-imparting fitting;
• said linking means including:
• drive teeth defined on the carriage,
• a toothed gear rotatably mounted to the base, engaged directly or indirectly with said drive teeth to drive the carriage, and carrying at least one eccentric drive means for engaging the motion-imparting fitting on the arm to drive the drawing-implement holder in repetitive excursions that each define an individual lobe of a circular array of a plurality of substantially similar lobes forming a complete continuous and closed design,
• said toothed gear and its eccentric drive means establishing a fixed ratio between said plurality of lobes and said small number of carriage rotations, to form a complete continuous and closed design;
• means for manually offsetting the toothed gear from the drive teeth on the carriage, by selectable increments consisting of a selectable integral number of said drive teeth;
• said manual-offsetting means including:
• means for manual disengagement of the toothed gear from particular drive teeth, and manual reengagement of the toothed gear with other drive teeth that are offset from the particular drive teeth by said selectable integral number of said drive teeth, and
• means for facilitating consistent repetition of said offsetting by a selectable integral plurality of said drive teeth;
• thereby to again form said complete continuous and closed design two or more times, offset in corresponding selectable increments of carriage rotation, for combination with said already formed complete continuous and closed design to create a compound design consisting of multiple drawings of the same complete continuous and closed design.