507 Mechanical Movements
507 Mechanical Movements by Henry T. Brownby Henry T. Brown
Ranked 2 of 15 reference books by recommenders
Illustrated catalog of 507 mechanisms that people use for design inspiration and learning, free to browse online. Critics note minor variations among examples and animation aliasing.
Illustrated catalog of 507 mechanisms that people use for design inspiration and learning, free to browse online. Critics note minor variations among examples and animation aliasing.
12 people gave an opinion
- recommend it
- 12
- criticize it
- 0
- approval share
- 100%
Recommended in 2 of 13 months
- November 2025: not recommended
- December 2025: not recommended
- January 2026: not recommended
- February 2026: not recommended
- March 2026: not recommended
- April 2026: not recommended
- May 2026: not recommended
- June 2026: not recommended
- July 2026: recommended
- August 2026: recommended
- September 2026: not recommended
- October 2026: not recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 12 people recommend itNeeds 10 or more, met.
- Nobody criticizes itNeeds 2 to 1 or better, met.
- Recommended in 2 of 13 monthsNeeds 4 or more, not met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Valued as a wonderful resource
“this is a wonderful resource”
Comment from 27 Aug 2026 in “507 Mechanical Movements” “One of my favourite sites!”
Comment from 27 Aug 2026 in “507 Mechanical Movements” Enjoyable to browse the mechanisms
“I really love this book, I found a first edition copy in a used bookstore in Maine on vacation.”
Comment from 27 Aug 2026 in “507 Mechanical Movements” “I really enjoyed looking at all the different mechanisms.”
Comment from 27 Aug 2026 in “507 Mechanical Movements” Useful for learning motion design
“This site is a treasure for anyone who has ever tried to get useful motion out of a small motor.”
Comment from 27 Aug 2026 in “507 Mechanical Movements” “For me it's a great dataset to train my own brain.”
Comment from 27 Aug 2026 in “507 Mechanical Movements”
What people warn about
Each mark is one comment
Animations alias on fast motion
“weird aliasing effects in the animation that makes it difficult to identify the direction of fast moving rope”
Comment from 27 Aug 2026 in “507 Mechanical Movements” Titles and names sometimes miss
“it misses on titles / names of the given linkage or movement”
Comment from 27 Aug 2026 in “507 Mechanical Movements” Many mechanisms are minor variants
“A lot of them are minor variances on a previous example.”
Comment from 27 Aug 2026 in “507 Mechanical Movements”
Other reference books people recommend
The four most recommended other reference books, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| Encyclopaedia Britannicaby Jan Morris | 29 | 8 | 78% | 11 | — | Approved |
| 507 Mechanical Movementsby Henry T. BrownThis page | 12 | 0 | 100% | 2 | — | — |
| The Ashley Book of Knotsby Clifford Ashley | 8 | 1 | 89% | 4 | — | — |
| World Book Encyclopediaby World Book | 5 | 1 | 83% | 4 | — | — |
| The Atlas of Middle-earthby Karen Wynn Fonstad | 5 | 0 | 100% | 1 | — | — |
What people said
12 of the 13 comments that mention it, newest first. Each links to the original comment.
“Doubles the speed without changing the number of teeth.”
“I really love this book, I found a first edition copy in a used bookstore in Maine on vacation.”
“weird aliasing effects in the animation that makes it difficult to identify the direction of fast moving rope”
“It's nice to see it in this format.”
“A lot of them are minor variances on a previous example.”
“For me it's a great dataset to train my own brain.”
“This site is a treasure for anyone who has ever tried to get useful motion out of a small motor.”
“it misses on titles / names of the given linkage or movement”
“this is a wonderful resource”
“I really enjoyed looking at all the different mechanisms.”
“One of my favourite sites!”
“It would be neat to see it updated to something along the lines of”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.