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Thread: Warsop Benjo power rammer - video, patent, diagram

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  1. Sep 23, 2018, 09:15 AM #1
    Jon
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    Warsop Benjo power rammer - video, patent, diagram

    Warsop Benjo power rammer. 1:50 video:



    A diagram from the manual:



    I'm wondering if this is the relevant patent, for a "Rock Drill and Like Implement", issued to H. E. Warsop in 1934:



    More: US patent #1981764

    Previously: manual rock drill
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    Seedtick (Sep 24, 2018)
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