8,425 pounds of energy!

Also at Type-Writer.org:

1. An early typecast about the “first” typewriter. “Typecasts” (typewritten blog posts) are popular today, but apparently they were a thing as early as the late 1800s. The following was published in 1891...
2. The Learner’s Typewriter Keyboard To learn to type, one had to own a typewriter, or else practice at a school or business. Then, also, one could purchase a “learner’s...