Patent ID: 7128504

Claim:
An improved spring tracer for duplicating machine for punched and laser keys, comprising a longitudinal spindle suspended from an end of a synchronous lateral lever having the other end laterally connected to a longitudinal shaft for a duplicating tool in parallel with said longitudinal spindle, and being longitudinally slidably secured on a body portion in accordance with a common longitudinal axis; a butterfly screw laterally threadedly secured on said body portion for locking said longitudinal spindle; a spring-loaded tracer engaged in an inner lower end of said longitudinal spindle for biasing a tracer stylus against an original punched or laser key for tracing depths of key teeth in accordance with said common longitudinal axis; a regulating sleeve rotatably secured at an outer lower end of said longitudinal spindle for regulating an elevation of said spring-loaded tracer in accordance with said common longitudinal axis; and a lateral screw laterally threadedly secured at outer lower end of said regulating sleeve, for moving said longitudinal spindle upward or downward by means of angular movement of said screw, and for locking said spring-loaded tracer in a non-spring acting state by means of turning said lateral screw.