Patent ID: 8878097

Claim:
An apparatus for feeding a wire, said apparatus comprising: two pair of rotatable rollers; a first curved spring-type mechanism having a curved rod-like guide element and a spring conforming to the guide element and configured to apply a first force via a proximal end of said first curved spring-type mechanism to displace a first roller of a first pair of said rotatable rollers towards a second roller of said first pair of said rotatable rollers to engage a wire there between; a second curved spring-type mechanism having a curved rod-like guide element and a spring conforming to the guide element and configured to apply a second force via a proximal end of said second curved spring-type mechanism to displace a first roller of a second pair of said rotatable rollers towards a second roller of said second pair of said rotatable rollers to engage said wire there between; an adjustment mechanism operationally connected between a distal end of said first curved spring-type mechanism and a distal end of said second curved spring-type mechanism to allow simultaneous adjustment of said applied forces.