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A National Archives Foundation educational resource using primary sources from the National Archives

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What is Patent Number 1,693,515?

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You will see a patent drawing for an invention with its name and its inventor’s name hidden.

Quickly scan this document. What do you notice first?

Please Note: Activities may not be optimized on mobile devices. For the best experience, complete the activity on a desktop or laptop.

View the full activity: https://docsteach.org/activity/what-is-patent-number-1693515/

  • Describe the document and the invention it depicts as if you were explaining it to someone who can’t see it.
  • Based on what you can see, what do you think is the purpose of this invention? List evidence from the document to explain your opinion.

After you have made a hypothesis, click “View Primary Source Details” to reveal the invention.

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To the extent possible under law, National Archives Foundation has waived all copyright and related or neighboring rights to “What is Patent Number 1,693,515?”