| | Berkshire Scenic Railway Museum Education |
 | | George Westinghouse invented the first version of the air brake in 1869 when he was just 22 years old. |
 | | Without air brakes, the engineer had little control over his train and it was not uncommon for the brakeman to lose fingers or be crushed between the cars. |
 | | To apply the brakes, the engineer reduces the pressure in the pipe and a value directs the greater pressure in the tank to a cylinder that applies the brakes. |
| www.berkshirescenicrailroad.com /education.php (7600 words) |