Fran Finds Four Foot Alphanumeric Displays From 1910

November 13, 2020 by Chris Lott 19 Comments

Video blogger and display technology guru [Fran Blanche] has discovered a splendid retro-tech alphanumeric display from 1910. (Video, embedded below.)

We have always enjoyed her forays into old and unusual displays, including her project researching and reverse engineering an Apollo DSKY unit. This time [Fran] has dug up an amazing billboard from the early 20th century. It was built by the Rice Electric Display Company of Dayton Ohio, and operated in Herald Square for about two years. Requiring $400,000 in 1910-US-dollars to build, this was clearly an Herculean effort for its day and no doubt is the first example of selling advertising time on a computer-controller billboard. It boasts characters that are about 1.3 m tall and 1 m wide which can display letters, numbers, and various punctuation and symbols. These are arrayed into a 3-line 18-character matrix that is about 27 x 4 meters, and that’s up only a third of the total billboard, itself an illuminated and dynamic work of art.

Diagram Depicting the 3×18 Character Display

There are quite a few tantalizing details in the video, but a few that jumped out at us are the 20,000 light bulbs, the 40 Hz display update rate, the 150 km of wire used and the three month long installation time. We would really like to learn more about these two 7.5 kW motorized switch controllers, how were they programmed, how were the character segments arranged, what were their shapes?

In the video, you can see triangles arranged in some pattern not unlike more modern sixteen segment displays, although as [Fran] points out, Mr Rice’s characters are more pleasing. We hope [Fran] can tease out more details for a future video. If you have any ideas or knowledge about this display, please put them in the comments section below. Spoiler alert after the video…

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Retro Flip Clock Gets A Retrofit

January 23, 2018 by James Hobson 4 Comments

Retro tech is almost always ripe for the hacking — be it nostalgia, an educational teardown, or acknowledging and preserving the shoulders upon which we stand. Coming across an old West-German built flip clock, YouTuber [Aaron Christophel] retrofitted the device while retaining its original mechanical components!

No modern electronics are complete without LEDs of some kind, so he has included a strip in the base of the clock face for visibility and cool factor. He doesn’t speak to the state of the clock beforehand, but he was able to keep the moving bits of the clock working for its second shot at life.

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1920s Navigation System And More

August 18, 2008 by Strom Carlson 4 Comments

And now, for your amusement, we present to you a navigation system from the 1920s. It’s not so much a satellite navigation system as it is a tiny map mounted in a wristwatch, but for the available technology of the era, this was a pretty ingenious invention, Other (and somewhat more bizarre) entries on this list of over a dozen other inventions from the early part of the 20th century include a finger stretcher, an eyeball massager, and mustache guards. Although most of these inventions seem laughable today, they are an interesting study in finding creative solutions to real problems. After all, what these inventors did a hundred years ago with gears and paper is pretty much what we do today with transistors and LEDs.