Abstract: In a machine for producing venetian blinds, a strip of slat material is intermittently fed by a feeding device to a mounting station where slats (20, 20') are mounted in a number of ladder tapes (17) at threading stations (12). Punching devices (30) for punching the strip of slat material comprise, respectively a punching tool (30) which is movable laterally relative to longitudinal direction of the strip of slat material between an operative position in which the die (32) and punch (33) of the punching tool are in the correct position for punching the strip of slat material, and an inoperative position in which the die and punch of the punching tool are positioned laterally outside the strip of slat material. The punching devices can have at least one cutoff or separating punching tool for cutting or separating individual slats (20) from the strip of slat material. A moving or driving mechanism (40-42) moves each punching tool between the operative position and the inoperative position.

Abstract: A control device for adjusting two or more tool units (3) in a machine, especially a Venetian blind production machine, comprises a number of series-connected setting screws (10-14) and gear units (15-19) for proportionally displacing the tool units along the machine bed (2) when operated by means of a drive motor (21).

Abstract: A Venetian blind production machine comprises a punching station with at least two groups of punching tools (14) for punching lift cord holes in at least two successive Venetian blind slats in the free end portion of a metal strip (6) inserted in the machine. The punching station is followed by a combined mounting and separating station, said separating station comprising at least a corresponding number of separating punches (17) for simultaneously separating the Venetian blind slats for the same number of simultaneously produced Venetian blinds. The invention is based on the idea that the advances of the metal strip (6) along the machine bed (2) is to occur for continuous and maximum periods of time with a minimum of acceleration and retardation cycles during the Venetian blind production.

Abstract: A Venetian blind has U-shaped mounting rail with lead-in holes for ladder-tapes, cords and slat operating means. The Venetian blind comprises an operating shaft and bearing blocks, bearing bushings hold-down means, a driving device therefor, and a cord lock. These details are designed as snap-in components adapted to be mounted in said mounting rail without necessitating the use of any special mounting means. The operating shaft is non-rotatable relative to and extends through the bearing bushings and is locked against axial displacement, on the one hand by means of an abutment face provided on said hold-down means at one shaft end and, on the other hand, by means of the shaft driving device at the other end of the shaft.

Abstract: A Venetian blind has U-shaped mounting rail with lead-in holes for ladder-tapes, cords and slat operating means. The Venetian blind comprises an operating shaft and bearing blocks, bearing bushings, hold-down means, a driving device therefor, and a cord lock. These details are designed as snap-in components adapted to be mounted in said mounting rail without necessitating the use of any special mounting means. The operating shaft is non-rotatable relative to and extends through the bearing bushings and is locked against axial displacement, on the one hand by means of an abutment face provided on said hold-down means at one shaft end and, on the other hand, by means of the shaft driving device at the other end of the shaft.