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Experiment with rubber typewheel for the Blickensderfer
The platen of the Blickensderfer 7 typewriter is rock-hard - like slate. When it was new and still rubbery, it would have cushioned the impact of the hard, vulcanite typewheel and have evened-out the...
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Burroughs Adding Machine Company hidden marking (Portable Class 9)
Clearly marked; Burroughs Adding Machine Company.That was an unexpected spot to find the company name. This is on the bottom-inside of the damper or dashpot of a Burroughs Class 9 adding machine. The...
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Re-activating column 7 and 8 on the Burroughs Portable adding machine
When entering numbers, all columns seem to work. For example, entering 7777 on the left-most columns makes all segments rise and print as they should.When then doing a total, the columns 7 and 8...
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Tune-up for the wind-up gramophone (and playing records)
Spending some time last weekend playing records, the bright colors of some labels do impress. From the way these were stored, they'll have been shielded from sunlight. Sleeves are usually a bit faded,...
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New gasket for the Burroughs Portable adding machine
Many Burroughs Portable adding machines don't have it anymore, but originally there would have been a rubber gasket between the top housing and the base-plate. It may have perished (as rubber can do),...
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Carriage cleaning of the Burroughs Portable adding machine
This Burroughs Portable adding machine has the wide carriage option; a 12 and a quarter Inch carriage with tabulator stops.The brightwork on this wide carriage was very dirty and/or corroded. Most of...
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New 7/16" ribbon for the Burroughs Portable adding machine
Even though it all works with a standard half-inch ribbon, the Burroughs is actually built to take a 7/16" ribbon. These are not too common anymore, but can still be bought. They can also be found in...
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Type cleaning on the Burroughs Portable adding machine
Just like typewriters, the type on an adding machine can get clogged-up with old ink or dirt from the ribbon. The Burroughs, like most adding machines, has a rising-segment printing mechanism; the...
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Repairing fault-handling of the Burroughs Portable adding machine
With the subtract-function fixed and columns 7 & 8 re-activated, this Burroughs Portable performed all calculating functions flawlessly. What however did not work at all, was the catching of...
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