MisterTea 3 hours ago

I figured it was Dempster though I did not know they were originally loaded with arms like skips. Dempster also made the unique "Dinosaur" hoist for roll off containers which used a yoke slid by a hydraulic cylinder. https://www.classicrefusetrucks.com/albums/DE/DE05.html

I'd like to know who came up with the roll-off idea as they can also be used to create a modular truck system where you can swap bodies. I always though the ultimate do-all truck is a roll off hook-lift with a boom crane and trailer hook up.

  • Animats 23 minutes ago

    Here's the whole story of the Dempster Dinosaur.[1] Detailed explanation of how the clever, tough, and not too complex mechanisms that load and unload debris boxes work. Discussion of why the obvious approach with cables and winches was not very good, although it did work.

    It's an insight into good classical mechanical engineering.

    [1] https://www.youtube.com/watch?v=PH6xs-kqJq0

pcaharrier 4 hours ago

I'm also cringing a little bit to learn that the practice of misspelling words with a "K" is as old as the "Dumpster Kolector" from the 1940s.