10. A wire crimper for crimping uncrimped wire from a coil to obtain a straight crimped wire, comprising a head mf member, a pair of crimping wheels mounted in a plane, means for mounting the crimping wheels on the head member so that the crimping wheels are freewheeling and partly mesh in a mesh zone, and means for pulling the wire from the coil through the mesh zone between the wheels in order to crimp the wire, said head member in a plane parallel to the plane of the crimping wheels and about a head member axis which is perpendicular to the plane of the crimping wheels being on a line between the axes of the wheels and also on the rotatable axis of the head member, means for adjusting the distance between crimping wheels, each crimping wheel being provided with a shaft, said mounting means including a pair of bearing housings having openings with bearings therein that rotatably support the shafts of the crimping wheels, said means for adjusting the distance between crimping wheels including a slot formed in each bearing housing, a stud extending from the head member into each slot, and means for clamping each housing to its stud at various positions along the slot, said pulling means including a pair of power-driven wheels which have resilient facings that frictionally grasp the sides of the crimped wire and pull the uncrimped wire directly from the coil to the crimping wheels without passing through any prestraightening means.