Mechanical Television Sanabria System
In 1931 the Western Television Corp. developed a theater projection system and demonstrated it around the country in 1933. The following is from Peter Yanczer:
The rack on the right is the camera, obviously a flying spot scanner. On the left is his video amplifier. On the lower shelf you can see 6 tubes, which are the 845s. Behind them is a panel and behind that is another 6 of the 845s. I've seen his lens disk described as being 3 feet diameter and as 3 and a half feet diameter in size. Also, stated in this article is that the lenses were 2 inches in diameter. If that is correct, I believe the disk had to be larger than 3 feet. All things considered, a 3 foot disk would be too small. After the Western company closed its doors in 1933, Ulises Sanabria worked on a multichannel projection system. According to Bill Parker, an engineer with the company, there were multiple crater lamps, each illuminating a group of lines in the picture, resulting in a 120 or 150 line image on a screen up to 30 feet wide. The equipment was made by a company in Canada that built municipal water towers. The crater lamps were mounted on a copper strip. The following is from a publication by Manuel A. Martinez, quoting a document written by U.A. Sanabria in 1966:
A 1936 brochure from National Schools in Los Angeles has a diagram of a water cooled crater lamp, designed to be used in projection systems: Invisible text to format smartphones. xxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxx xxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxx |