In article , ravensworth2674 writes
Norm,
You seem to think a piece of work is only protected by copyright if it says so on it. This is a common fallacy, utterly wrong.
It is too big a subject to set out in detail here, but in essence any literary, dramatic or artistic work, film, sound recording, or typographical arrangement is automatically protected by copyright from the moment of its creation.
Although the work must be an "original" work, this does not mean it requires novelty in the same way as a patent does; it simply means it must not be a copy of some previous work, but must originate from the author.
Over the years, the courts have ruled that the most mundane things can be covered by copyright. Thus the instructions and drawings you referred to certainly are.
As someone else correctly pointed out, copyright does not protect ideas*, it only protects the actual expression of them, so you are quite free to take the idea and produce your own "literary work" based on it. Also as someone pointed out, the magazine will not normally own the copyright in the article, but only have limited rights (something like "first magazine publishing rights") granted to them in a licence by the author. The author is free to publish the work himself in other forms, or license someone else to do so. However, the magazine does have copyright in the actual typesetting, so you cannot just photocopy the magazine pages.
How important is all this? and is it fair? you might ask. Well, in many cases, such as instruction books for long-obsolete equipment, or old works, it may be impossible to trace the owner of the copyright (if you can show you have made reasonable efforts you will probably get away with it). In other such cases, the owner may be indifferent, or even pleased, that someone is helping others to use their old goods. Such cases most commonly arise where the works are incidental to the thing the owner made money on, and does not affect his current activities. In other cases, such as a publisher, he may feel differently - he makes money from sale of reprints, and you are taking his (legitimate) bread from his mouth.
Is it "fair"? Well, frankly, it's not for you to judge. If anyone were allowed to steal another's property (and copyright is property, just as much as your lathe is) just because they thought it was unfair that you should have it, civilised society could not exist (I exclude communism from any definition of "civilised society").
As someone suggested, it would be better - more polite, and legally secure - to approach the author, who will almost certainly have his original typescript and drawings, for permission to put his version onto your website or disseminate in other not-for-profit ways. I'm sure most authors in a hobby-related field will be happy to give permission. If they don't (maybe he is hoping to put it in a book), then you certainly have no right to use the material unilaterally, and it would also be very ill-mannered. Will it matter? Possibly not, as the owner would hardy recover anything like enough to justify the time and expense of pursuing you. Is that an excuse? Not IMO, YMMV.
*Though patents do - this is a whole different ball game.David