Some patent drawings are lovely to study and learn from. This drawing was send to me by a company as a reference for what their draftsmen are capable of. As you can see, some patents are of the highest educational material that is around.
The drawing below is a drawing of a patent, of which the description has been lost. It is not sure what invention the drawing is depicting, yet it is a beauty of a drawing. It appears to have to do with a steam engine condensor of some sort. If you know what it represents, please leave a comment!
Therefore, my message to you is: make use of the knowledge that has already been accrued in the patent system! There is some good stuff to be found.