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The slide valve, simply explained ⠃⠗⠋ braille edition

Grade 1 — uncontracted, letter-for-letter. Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 2 instead.

Download .brf — Grade 2 Download .brf — Grade 1 Plain-text reader .txt

76,971 braille cells · 81 embossed pages at 40×25 · 272 unrepresentable characters omitted

⠞⠓⠑⠀⠺⠕⠗⠅⠀⠙⠕⠝⠑⠀⠥⠏⠕⠝⠀⠞⠓⠑⠀⠀⠕⠏⠏⠕⠎⠊⠞⠑⠀⠎⠊⠙⠑⠎⠀
⠃⠑⠉⠁⠥⠎⠑⠀⠕⠋⠀⠞⠓⠑⠀⠉⠕⠍⠍⠑⠝⠉⠑⠍⠑⠝⠞⠀⠕⠋⠀⠞⠓⠑⠀⠞⠺⠕⠀
⠉⠽⠉⠇⠑⠎⠀⠕⠋⠀⠀⠕⠏⠑⠗⠁⠞⠊⠕⠝⠀⠁⠞⠀⠙⠊⠋⠋⠑⠗⠑⠝⠞⠀⠞⠊⠍⠑⠎⠂
⠀⠺⠓⠑⠝⠉⠑⠀⠺⠑⠀⠊⠝⠋⠑⠗⠀⠙⠊⠋⠋⠑⠗⠑⠝⠉⠑⠎⠀⠊⠝⠀⠞⠓⠑⠀
⠎⠏⠑⠑⠙⠎⠀⠀⠕⠋⠀⠞⠓⠑⠀⠏⠊⠎⠞⠕⠝⠂⠀⠊⠝⠀⠞⠓⠑⠀⠟⠥⠁⠝⠞⠊⠞⠊⠑⠎
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⠑⠭⠏⠁⠝⠎⠊⠕⠝⠤⠉⠥⠗⠧⠑⠎⠲⠀⠀⠀⠀⠠⠊⠝⠀⠎⠕⠍⠑⠀⠉⠁⠎⠑⠎⠀⠎⠥⠉⠓
⠀⠁⠀⠙⠊⠋⠋⠑⠗⠑⠝⠉⠑⠀⠊⠎⠀⠙⠑⠎⠊⠗⠁⠃⠇⠑⠂⠀⠁⠝⠙⠀⠺⠊⠞⠓⠀⠞⠓⠑
⠀⠺⠕⠗⠅⠊⠝⠛⠀⠀⠙⠊⠁⠛⠗⠁⠍⠀⠎⠥⠛⠛⠑⠎⠞⠑⠙⠀⠊⠝⠀⠠⠉⠓⠁⠏⠞⠑⠗⠀
⠠⠊⠲⠀⠁⠝⠕⠞⠓⠑⠗⠀⠎⠑⠗⠊⠑⠎⠀⠕⠋⠀⠗⠑⠎⠥⠇⠞⠎⠀⠍⠁⠽⠀⠃⠑⠀⠀
⠕⠃⠞⠁⠊⠝⠑⠙⠀⠃⠽⠀⠥⠎⠊⠝⠛⠀⠞⠓⠑⠀⠕⠗⠙⠊⠝⠁⠗⠽⠀⠧⠁⠇⠧⠑⠀⠋⠕⠗
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⠙⠊⠋⠋⠑⠗⠑⠝⠞⠇⠽⠤⠏⠗⠕⠏⠕⠗⠞⠊⠕⠝⠑⠙⠀⠧⠁⠇⠧⠑⠀⠀⠺⠊⠞⠓⠀⠁⠀
⠙⠊⠋⠋⠑⠗⠑⠝⠞⠀⠊⠝⠙⠑⠭⠤⠏⠕⠊⠝⠞⠑⠗⠂⠀⠁⠎⠀⠞⠓⠕⠥⠛⠓⠀
⠕⠏⠏⠕⠎⠊⠞⠑⠀⠑⠝⠙⠎⠀⠕⠋⠀⠕⠝⠑⠀⠧⠁⠇⠧⠑⠀⠀⠺⠑⠗⠑⠀
⠙⠊⠋⠋⠑⠗⠑⠝⠞⠇⠽⠀⠏⠗⠕⠏⠕⠗⠞⠊⠕⠝⠑⠙⠂⠀⠁⠎⠀⠊⠝⠀⠉⠑⠗⠞⠁⠊⠝⠀
⠇⠁⠗⠛⠑⠀⠧⠑⠗⠞⠊⠉⠁⠇⠀⠑⠝⠛⠊⠝⠑⠎⠲⠀⠀⠀⠀⠠⠁⠙⠙⠊⠝⠛⠀
⠠⠑⠭⠞⠗⠁⠀⠠⠇⠁⠏⠀⠞⠕⠀⠁⠀⠠⠧⠁⠇⠧⠑⠲⠤⠤⠠⠊⠝⠀⠎⠕⠍⠑⠀⠉⠁⠎⠑⠎
⠀⠉⠥⠞⠤⠕⠋⠋⠀⠍⠁⠽⠀⠃⠑⠀⠺⠁⠝⠞⠑⠙⠀⠀⠑⠁⠗⠇⠊⠑⠗⠀⠊⠝⠀⠞⠓⠑⠀
⠎⠞⠗⠕⠅⠑⠂⠀⠏⠑⠗⠍⠁⠝⠑⠝⠞⠇⠽⠂⠀⠺⠊⠞⠓⠀⠑⠭⠏⠁⠝⠎⠊⠕⠝⠀⠕⠋⠀
⠇⠕⠝⠛⠑⠗⠀⠙⠥⠗⠁⠞⠊⠕⠝⠲⠀⠀⠠⠥⠝⠙⠑⠗⠀⠎⠥⠉⠓⠀
⠉⠊⠗⠉⠥⠍⠎⠞⠁⠝⠉⠑⠎⠀⠍⠕⠗⠑⠀⠇⠁⠏⠀⠍⠁⠽⠀⠃⠑⠀⠁⠙⠙⠑⠙⠀⠞⠕⠀
⠞⠓⠑⠀⠧⠁⠇⠧⠑⠲⠀⠠⠊⠋⠀⠞⠓⠊⠎⠀⠃⠑⠀⠀⠙⠕⠝⠑⠂⠀⠁⠝⠙⠀⠞⠓⠑⠀
⠧⠁⠇⠧⠑⠀⠺⠊⠞⠓⠀⠊⠞⠎⠀⠑⠭⠞⠗⠁⠀⠇⠁⠏⠀⠃⠑⠀⠗⠑⠤⠎⠑⠞⠀⠃⠽⠀

These are the same pages the .brf download embosses — form-feed breaks and all. BRF opens in braille software (Duxbury, BrailleBlaster), on embossers, and on refreshable displays.