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The slide valve, simply explained ⠃⠗⠋ braille edition

Grade 2 — contracted English braille (EBAE-compatible subset). Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 1 instead.

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

64,683 braille cells · 67 embossed pages at 40×25 · 272 unrepresentable characters omitted

⠕⠏⠻⠁⠞⠊⠕⠝⠎⠀⠷⠀⠌⠑⠁⠍⠤⠙⠊⠌⠗⠊⠃⠥⠞⠊⠕⠝⠀⠁⠗⠑⠀⠀
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⠑⠋⠋⠑⠉⠞⠀⠘⠥⠀⠮⠍⠀⠎⠀⠋⠜⠀⠵⠀⠸⠮⠀⠞⠊⠍⠬⠀⠊⠎⠀⠉⠕⠝⠉⠻⠝⠫⠲⠀
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⠑⠭⠏⠁⠝⠎⠊⠕⠝⠀⠛⠑⠜⠎⠂⠀⠵⠀⠺⠑⠇⠇⠀⠵⠀⠃⠑⠬⠀⠗⠑⠧⠻⠎⠬⠀
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⠧⠁⠇⠧⠑⠀⠛⠑⠜⠂⠀⠯⠀⠀⠋⠇⠽⠤⠱⠑⠑⠇⠀⠉⠳⠇⠙⠀⠝⠀⠃⠑⠀⠎⠑⠢⠲⠀
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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.