Large diameter sprocket wheel with independently rotating toothed edges, one with flywheel. Photocell (missing) fittted inside sprocket wheel with slot for blight transmission. Idlers and jockey wheel. Lamphouse with fitting for SBC type lamp. Screw position adjustment. Optical system for projecting slit image onto film track by Taylor Hobson. For early sound system. Possibly experimental. Sound Head for 35mm Film Projector
Roughly hemispeherical brass casting with mounting bracket. Copper slip with optical slit mounted in top with simple brass pressure plate, sprung. Hollow to permit insertion of photocell tube or glowlamp. Sound Gate
Early experimental electromagnetic recording mechanism for discs. Unsuccessful experiment in electrical recording. Arthur Kingston. experimental electromagnetic recording mechanism for discs 1909-
Two ratchet wheels with indicator dials driven by electromagnets. Contact breakers in camera and gramaphone connected via 12v accumulator. Rocker on-off switch. Made by Arthur Kingston for Charles Pathe. 1908. Pathe sound synchroniser 1908-
Accessory mechanism for attachment to silent projector. Two continuous sprockets, one with sprung idler, feeding continuous roller with two rubber tyred pressure wheels. Gate with slot. Condenser lens on one side with tube and photocell etc the other. Take up arm without spindle. Large flywheel. Probably experimental and made from a projector mechanism Early sound head mecahnism for film projector