Abstract: A low pressure tire indicator is a mechanical device for producing an audible warning to the driver of low or inadequate tire pressure. The low pressure tire indicator includes a strap for mounting the low pressure tire indicator to a wheel hub. A spring housing is mounted on the strap. A rocker arm is mounted on an anchor pin positioned within the spring housing, and extends away from the wheel hub towards the inside tread wall of a pneumatic tire mounted on the wheel hub. The rocker arm includes a roller on a free end for engaging the inside tread wall of the tire during a low pressure condition. A hammer is mounted on the anchor pin and moves in unison with the rocker arm. A spring is mounted on the anchor pin, and, during proper tire inflation, normally urges the hammer into contact with the wheel hub, and normally positions the roller on the free end of the rocker arm between the wheel hub and the inside tread wall of the tire.

Abstract: A method of tracing graphic material present on an underlying substrate onto an overlying tracing paper. The method comprises providing a sheet of tracing paper and providing a thin coat of transparent, light tack adhesive applied in a single uniform layer array on both the lengthwise and widthwise dimension on one side of the sheet in a quantity sufficient for permitting the tracing paper to be temporarily but securely adhered to the underlying substrate without wrinkling, stretching or movement during the tracing process; applying the tracing paper with the adhesive thereon to the substrate; making the tracing together with any added material to the tracing paper; and removing the tracing paper from the substrate without damage to the tracing paper or to the underlying substrate while retaining all of the adhesive on one side thereof.