I didn’t know that about the air brake and the knuckle coupler. But not everything the Pensy did was adopted as standard by other railroads, Like the Belpaire fire box, only a few other roads used it. And those very peculiar position light signals. To my knowledge, only the Norfolk and western had anything similar.
And I like to know what the Pennsylvania’s problem was with the superpower concept developed by Lima.
I still have to laugh about what some PRR manager said about freight traffic…..” if it doesn’t fit in our boxcar, we don’t need the business”. Now THAT’S Customer Service.! HAWHAWHAW!!!