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1930  Two-Way Television by Bell Laboratories

1930 Bell & AT&T Cover (108K bytes) (108K) - Dust cover opened to full size (8-1/2" x 11")

The full title reads:  "Two-way Television and a Pictorial Account of Its Background", developed by Bell Telephone Laboratories (with AT&T), published in April 1930, describing earlier events and achievements.

Covers the Bell labs April 7, 1927 television demonstration, two-way picture phone demonstration and most interestingly, the demonstration of mechanical color television in June 1929.
 

1930 AT&T BELL Labs Pg 2-3 (100K bytes) (100K) - Pages 2-3
Herbert Hoover, then Secretary of Commerce, converses with Walter S. Gifford, President of AT&T, from Washington to New York, on April 7, 1927.

1930 AT&T - BELL Labs Pg 4-5 (108K bytes) (108K) - Pages 4-5
Television beam by Scanning

1930 AT&T BELL Labs - Pg 6 (68K bytes) (68K) - Page 6
Transmitting apparatus of 1927

1930 AT&T - BELL Labs - Pg 7 (48K bytes) (48K) - Page 7
Television receiver of 1927

1930 AT&T - BELL Labs - Pg 8 (72K bytes) (72K) - Page 8
Large neon display of 2,500 elements, for audience viewing

1930 AT&T - BELL Labs - Pg 9 (80K bytes) (80K) - Page 9
Motion picture film apparatus for 1927 television demonstration

1930 AT&T- BELL Labs - Pg 10 (60K bytes) (60K) - Page 10
Radio receivers for television and sound channels respectively, used in the 1927 demonstration.

1930 AT&T- BELL Labs - Pg 11 (64K bytes) (64K) - Page 11
General schematic of the first practical television system

1930 AT&T- BELL Labs - Pg 12-13 (60K bytes) (60K) - Pages 12-13
Photoelectric cell used with direct scanning in television - July 1928

1930 AT&T-BELL Labs - Pg 14-15 (92K bytes) (92K) - Pages 14-15
LH:   Direct-scanning camera & amplifier used in outdoor scenes
RH:  Closer view of direct-scanning system

1930 AT&T-BELL Labs - Pg 16-17 (100K bytes) (100K) - Pages 16-17
Television in Color - Demonstrated June, 1929

1930 AT&T - BELL Labs - Pg 18 (84K bytes) (84K) - Page 18
Working parts of a color television system of 1929.

1930 AT&T - BELL Labs - Pg 19 (96K bytes) (96K) - Page 19
Photo-electric cell arrangement used in 1929 color television

1930 AT&T-BELL Labs - Pg 20 (80K bytes) (80K) - Page 20
Amplifiers for 1929 color television

1930 AT&T-BELL Labs - Pg 21 (56K bytes) (56K) - Page 21
Details of 1929 color television receiver

1930 AT&T-BELL Labs -Pg 22-23 (104K bytes) (104K) - Pages 22-23
Two-way television by Herbert E. Ives

1930 AT&T-BELL Labs - Pg 24-25 (120K bytes) (120K) - Pages 24-25
Reception room for two-way television communication

1930 AT&T-BELL Labs- Pg 26-27 (84K bytes) (84K) - Pages 26-27
LH:    Frank Gray and A. L. Johnsrud in television booth.
RH:    D. G. Blattner and L. G. Bostwick inspecting the microphone and loudspeaker (normally concealed)

1930 AT&T-BELL Labs - Pg 28-29 (128K bytes) (128K) - Pages 28-29
Side view of television cabinets removed

1930 AT&T-BELL Labs - Pg 30-31 (104K bytes) (104K) - Pages 30-31
LH:   H. M. Stoller pointing to synchronized motors which drive the scanning disc
RH:   Schematic diagram of the two-way television apparatus

1930 AT&T-BELL Labs - Pg 32-33 (132K bytes) (132K) - Pages 32-33
A. W. Horton and M. W. Baldwin at the operating panels at 195 Broadway, NY

1930 AT&T-BELL Labs - Pg 34-35 (92K bytes) (92K) - Pages 34-35
LH:   Interior of television booth - shows incoming image of woman
RH:  Side view of synchronous motors, scanning discs, and water-cooled neon lamp

1930 AT&T-BELL Labs - Pg 36-37 (128K bytes) (138K) - Pages 36-37
Control panels for two-way television at 195 Broadway, NY

1930 AT&T-BELL Labs - Pg 38-39 (116K bytes) (138K) - Pages 38-39
Close-up view of scanning discs, neon lamps

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