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Bemisine style of sine angle plate

johnnielsen

John (Makonjohn)
While reading a Pop Sci magazine from 1944, I came across a sine plate version that I have never seen or heard of before. I think it's brilliant.

PS - no copyright so free to public.
 

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  • Bemisine sine plate crop .jpg
    Bemisine sine plate crop .jpg
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Yes, pretty sure I came across before, they were a commercial accessory. I believe they were for grinding setups & depended on friction lock to hold the setting. I think it offers more angle than typical sine bars? Grinding is in my next life apparently LOL. I think oxtool (Tom Lipton) showed some of his similar scores. The one I was interested in had some sort of jack or more mechanically stable lock that could more-so be transferred to a mill without losing setting under cutting loads. Maybe it was a Herman Schmidt ?sp? Can't recall but when I looked it up, it was a fortune used.


1689969053139.webp
 
While reading a Pop Sci magazine from 1944, I came across a sine plate version that I have never seen or heard of before. I think it's brilliant.

I think we need more pictures John. It isn't obvious to me how it works!

Edit - Sorry didn't see the other posts.
 
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