Benchwayze":20fb4fd7 said:
You are probably right BB,
The Dutch had a telescope long before Gallileo made his first. (He used their idea)
I believe Fox-Talbot wasn't the first person to make a photograph. Someone in France did that, but did nothing about it.
Edison also managed to sneak his lightbulb in, ahead of someone else.
C'est la Vie!
John
Nope. It's proof of 'prior art' that will invalidate a patent. Even if you have one awarded, it can still be contested on the basis of proven prior invention by someone else, and that being placed somehow in the public domain, in the form of notes or witnessed conversation, etc.
Regarding the examples you cite:
-- Galileo didn't patent anything. IIRC, at the time there wasn't a system as such, although patents were granted by royalty on an
ad hoc basis.
-- Neither did Fox Talbot (when you say Frenchman, you're thinking about Daguerre, I suspect, who used a different chemical process, but did create images). Since wood often chemically darkens or lightens in sunlight/UV, it is quite possible to make an image on it with light alone, although it's what might be described as a 'time exposure' and would be somewhat grainy (I'll get me coat... in a sec...)!
-- Swann (Scotsman) and Edison (Yank) pretty much invented the light bulb simultaneously. To summarise a lot of legal fuss & posturing, Edison got the US patent first, Swann contested it, and after a lot of expense a no-score draw was declared, and they agreed to co-operate, rather than let it go to penalties. The resulting company was Swann-Edison.
In the case of this plane iron and chip-breaker, it's a common tactic to apply for a patent and say you have. Your application date is initially taken as proof of originality (unless successfully contested), so a patent application _can_ be as good as an actual patent (as long as you eventually get one). It can also be a scare tactic, giving you time to get established.
I haven't read the application: It might be the peg/slot, or it might be something else to do with the product, such as some part of the heat treatment. Patents, incidentally, don't have to do what they're intended to do, so it might be a feature that actually has no effect!
I stress I'm speculating, and not casting aspersions on what appears to be a very good, if pricey, blade.
To change the subject: I warped a mid 1980s Stanley plane iron recently by heat treating it clumsily (but it sharpened up beautifully before I realised!
). To replace it I bought the
laminated Japanese blade that Axminster are selling.
Like others, I found it wasn't ground square, which was annoying, but after gently re-grinding and honing it, I think it's wonderful. My fettled #5 flies, and easily makes translucent shavings. To my surprise I even get curls off MDF! I think they've put the price up slightly, but it's still just under £40 for the wider one.
HTH,
S.