Abstract: A mounting bracket (16) for a window covering (10) headrail (12), the latter having an open top defined by flanged edges with recesses (24, 26). The bracket (16) has a back plate (28), top plate (30), and forwardly/downwardly extending spring arm plates (46,48) joined by a cross bar (50). In assembly, the bracket is mounted to a wall surface and the headrail (12) is locked onto the bracket by interaction of the spring arm plates, the greater part of the bracket being hidden within the headrail.

Abstract: A venetian blind tilter mechanism housing has a first surface which bears against the front wall of the headrail, and a longitudinally extending slot on the surface facing the headrail back wall forming a spring plate which fits under a downwardly turned headrail back wall edge securing the housing within the headrail. The tilter mechanism has a spur gear received onto a control axle for common rotation. The spur gear has a smooth peripheral portion extending for a substantial angular extent that lacks gear teeth with conventional gear teeth over the remainder. An elongated shaft with a worm gear extends upwardly into the housing through an opening in the headrail bottom wall for meshing engagement with the spur gear.