Bemisine style of sine angle plate

[johnnielsen]

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.

 

[PeterT]

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.

Bemisine 3 1/2" x 4" Sine Mounted on Angle Plate

Lot 491 at Provident Tool & Die Co. and K-Tool from Thompson Auctioneers.

www.bidspotter.com

 

[Susquatch]

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.