![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhQfEaIeT61pyvkCWbQyQwY5JArsgWNq2SYQdOXn0q8AwVeaaleXv5BG_LkxjmGAP7WEaS27Z1na74jtSwtR1hoMWS7NbMVTebGfBZNlbm4RnS47PbY4TVOst4DLHFP9XT8RcGyjxhnYqw/s320/Mangle-wheel+and+pinion.png)
"36. Mangle-wheel and pinion -- so called from their application to mangles -- converts continous rotary motion of pinion into reciprocating rotary motion of wheel." Found in
Five hundred and seven mechanical movements. I wonder what proportion of technical people in the past were expected to know this stuff cold compared with those today? Then again, they didn't know about mathematical programming either.