Abstract: An improvement in a Venetian blind comprises a bottom rail in openable box form containing means for permitting easy adjustment of the length of the lift cords and slat ladders of the blind, and therefore the overall length of the blind, to adapt it to different window lengths. Preferably, the box comprises a horizontal lower bottom portion with closed bottom and upraised sloped sides and a horizontal upper portion with closed top and depending sloped sides, the latter usually fitting closely between the upraised sides. The two portions are releasably held together, as by removable pins extending therethrough. The lower edges of the depending sides can define inverted V-shaped keeper slots or the like to releasably retain the vertical string portions of the ladders. The upper portion may have apertures in the top down through which the lift cords pass.

Abstract: A venetian blind slat-tilting mechanism including a pair of top-mounted bars to which tilt strings are attached at opposed positions and which are attached together through a nut threaded to a rod. The rod is connected to a pulley which is turned by a tilt-adjusting cord. The motion of the pulley turns the rod and moves the nut laterally, thus moving both bars and tilting the blind's slats. Additionally a slat-lifting mechanism is provided in the form of lift strings running over support pulleys to raise and lower the blind.

Abstract: A sectioned Venetian blind slat and mechanism for joining the sections thereof to permit a broken slat to be replaced without the necessity of taking the entire blind to a repair shop. Fabrication of slats through the use of the joint mechanisms of the invention results in simplification of manufacturing techniques and the realization of economies through being able to use shorter pieces of wood such as were formerly treated as scrap in the manufacture of full length slats. Contrasting shades of wood sections may be employed to develop a contrasting pattern in a blind.