Exhibitors Herald and Moving Picture World (Apr-Jun 1930)

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60 Better Theatres Section April 12, 1930 UPCO ELECTRIC PICK-UPS ARE PRECISION BUILT — The “Symphony” Model Designed for Theatre and Professional Use Permanency in Performance The UPCO standard model is adaptable to any phonograph in a home or combination radio and phonograph set. Ballbearing action. Fidelity in Reproduction The symphony head which is easily detached can be supplied separately — “in a second on or off” — ball-bearing action. Upco Products are never cheapened or built down to meet a price — UPCO PRODUCTS CORPORATION Anton Borsuk, Prest. 270 Lafayette St. New York City without affecting the speed of the latter in any way. Thus the sound machine is made the controlling factor. The device is also designed to prevent film breakage from throwing action and sound out of synchronization by more than one-half of a revolution of the turntable or mandrel. The diagram indicates the general scheme of the invention, which may be briefly described as follows: The sound machine is provided with a main shaft (10) driven by a suitable gearing (11) from a spring motor which may be of any desired type. The motor is enclosed in a casing (12). Bearings (13) support the shaft (10) and are insulated from the casing (14), as is the motor casing and its contents. A turntable (15) is carried at the upper end of the shaft and is adapted to receive the sound disk (16). By means of the spring motor, the turn table is driven at a constant speed. Below the turn table is a disc (17), which is supported on the upper end of an insulating sleeve (18), mounted on the shaft (10), to provide freely thereon. At its lower end this sleeve supports a bevel gear (19), which meshes with a bevel gear (20) fixed on a shaft (21), supported in a suitable bearing (22). A universal joint (23) connects the shaft (22) with a shaft (24) which is driven by gearing (25) from the feed sprocket shaft (26) of the motion picture ma chine (camera or projector) . This shaft (26) is driven through suitable gearing (indicated typically at 27) from a variable speed motor (28), the speed of which is controlled by a rheostat (29). On the disc (17) is an insulating ring (30), whereon is mounted a commutator ring having a normal segment (31) interposed between a “slow motor” (segment 32) and a “fast motor” (segment 33), these two segments having a “starting” segment (34) interposed between their remaining ends. On the sleeve (17) are mounted four contact bands (35), each connected to a respective segment as by a wire (36). A bracket (37) supports an insulating plate (38), carrying four contact fingers (39), each engaging a band (35). A positive supply wire or conductor (40) is connected to one of the bearings (13) and thus to the shaft (10). On the turn table or platen (15), is a spring contact (41), which is positioned to travel over the contact segments upon relative movement between the platen and disc (17). The rheostat (28) is provided with a resistance winding (42), over which may be manually moved a contact (43), which is connected by a conductor (44) with the finger for the segment (31). One end of the winding (42) is connected by a wire (45), with one brush of the motor (28), the other brush of the motor being connected to a negative lead (46). A wire or conductor (47) leads from the finger for segment (32) through a variable resistance (48) to contact 48 moving with contact 43. A wire (49) leads through a variable resistance (50) to contact 43, and a wire (51) leads through a normally open switch (52) to the finger for segment 34. A stop (53) is provided on segment 34 to limit relative movement of the platen and disc, so that they can never be more than one-half revolution out of time, this stop being engaged by contact 41 to this end. The resistance (48 and 50) are preferably of the carbon type. In operation, the rheostat (29) is adjusted manually to synchronize the film and record disc as nearly as possible, and the resistance (48) is adjusted to have less resistance than that cut in by adjusting the rheostat. When thus adjusted, contact 41 will normally ride on