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What You Want to Know About Kodak Carousel Slide Projectors

Kodak introduced the carousel slide projector in 1961 after purchasing its design from its inventor, Italian-American Louis Misuraca. The carousel design features a rotary tray that stores slides for projection. You can place slides in a specific order to create a slideshow.

Are there multiple designs of carousel slide projector?

It is true that many designs exist. The original design, Model 550, debuted in 1961 and remained available until 1966. Also, a professional grade model, Model S (Carousel-S), was released in 1963 in Germany.

The firm submitted its patent application in 1962. Engineer David E. Hansen worked to improve Misuraca's design and received a patent on May 11, 1965. The firm patented the rotary tray in 1966, following a 1962 application.

The firm continued to alter the design periodically, issuing a Pocket model in the 1970s for projection of Kodachrome slides in the miniature 110 format. Then, in the mid-1980s, the Model 4400 was issued. About the same time, Kodak brought out a stack loader that let a user run an up to 40 piece stack without a tray. It could only forward the stack though. It also introduced clip sets that held 36 pieces per clip. The rotary slide projector discontinued in October 2004.

How does a rotary slide projector work?

A rotary model consists of two separate pieces: the circular tray and the projector body, which houses the motor. The slide tray holds either 80 or 140 35mm slides. It's placed backward and upside down into a traditional horizontal model so the photos display in their appropriate orientation on the wall. A metal plate on the bottom of the tray with a 0.20-inch wide opening allows a single slide at a time to enter the projection gate.

A motor inside the main body powers tray rotation. One at a time, a reciprocating mechanism advances the tray and advances a single slide into the projection opening where a light source shines on it and the lens projects it onto a screen or wall. The photos advance in the order they were inserted in the tray.

What differences are there between horizontal and vertical rotary projectors?

The horizontal models offer three advantages:

  • Locking ring: Its hub features a locking ring that holds slides in place even if dropped.
  • Reduces jamming: It reduces the chance of jamming by using gravity to lower the slide into the projector.
  • Automated mechanism: It offers an automated mechanism eliminating the need to manually reset the tray between slideshows.
Content provided for informational purposes only. eBay is not affiliated with or endorsed by Kodak.
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