143-L Switcher-I® Left Hand Operation

Standard switching devices (for two-way direction) represent a major development in the effort toward more versatile stage and studio settings. Simply by pulling down on a pendant, the track channel is shifted and the curtain is then moved to the switched channel. The mechanism is operated by a spring-loaded lever, locking the switched channel into place. In this fashion the scenic contour is quickly and effectively converted to the desired setting. With this flexible switching arrangement stage depths are easily increased or decreased and facilities for curtain storage are made available. Designed for use with all ADC "walk-along" cyclorama tracks. Switches must be rigidly mounted in all instances. The device is easily installed and merely involves conventional splicing of the track channel to the permanent track sections incorporated as component parts of the switch which is furnished for either left-hand or right-hand operation (must be specified when ordering) . A model PP-1 Positioning Pole is used to move the two-way switch to another position by simply engaging the pendant and pulling down. It is 8'6" long and can be extended to 16'.

Right Hand Switch Shown Below

SPECIFICATIONS:

Switch bases shall be constructed of painted, machined 1/8" steel. Switches shall be equipped with Model 1400 11 gauge extruded aluminum I-beam track milled for precise alignment in either switch position. Base plate of device shall be 1/8" steel machined to allow plate and attached track to freely move from position 1 to position 2. Operation of switch shall be via 1/8" 7 x 19 wire center operating cable attached to two (2) painted steel weights. Steel operating cable shall pass over two (2) ball-bearing equipped steel sheaves secured to steel base of switch via steel mounting straps and hardware. Mounting base shall be equipped with openings for attachment to overhead structural members (unit cannot be flush mounted to ceiling). Model 143-L (Left-hand switch) and Model 143-R (Right-hand switch) as manufactured by Automatic Devices Company of Allentown, PA.