1887 Edison dynamo.
Fullsize image: https://diqn32j8nouaz.cloudfront.net...o_fullsize.jpg
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Previously:
Edison stock ticker machine - photo
Thomas Edison's machine shop - photos
New plans added on 11/06: Click here for 2,565 plans for homemade tools.
durrelltn (Apr 19, 2022), KustomsbyKent (Apr 19, 2022), nova_robotics (Apr 23, 2022), Toolmaker51 (Apr 25, 2022)
What are those brushes made out of?
Originally Posted by nova_robotics
The first brushes were actual wire "brushes" made of small wires. These wore out easily and they developed graphic blocks to do the same job.
Generators and Dynamos
nova_robotics (Apr 24, 2022)
Mark of a dedicated work force, hired for ability and willingness to learn -then demonstrate it, when many of the 'engineers' had sufficient mechanical background - hands on, and planned obsolescence rated sinful. When you build for longevity, even the machine frame, aka 'skid' can be pointed to with pride.
'Sonny, my great grandfather built that'.
Sincerely,
Toolmaker51
...we'll learn more by wandering than searching...
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