Adjustable fitting for safety belt

Claim 1

Apparatus for the adjustment of belt length, comprising a frame having a longitudinal aperture, thrust means mounted on and displaceable on the frame transversely with respect to the longitudinal aperture, said trust means including a plastic locking cap having a web of substantially semi-circular cross-section extending across said aperture and on an outer surface of said frame and guide jaws mounted over the longitudinal edges of said frame and displaceable with respect to the longitudinal aperture of the frame, said semi-circular surface facing outwardly of said outer surface, and further including a thrust piece loosely mounted in the locking cap and guided thereby and having a transverse web positioned across said aperture between said web and said frame and engageable with said web, said transverse web including an angled locking edge with relation to the main plane thereof and lateral guide panels extending transversely to the locking edge, said guide panels slidably engaging said outer surface of said frame along said aperture, said transverse web having ribs on the surface that face said aperture.