Christian DeCamillis
Elite Cafe Member
John, That looks a lot like the system 3. Have you used it? and if so how does it perform?
If you go to google patent searches. The early engraving needle that I listed before was usedn more for stippling. The piston did hit and make the needle point reciprocate. It shows a devive that pulsed the air. It's interesting how not much is new in the way things work. Just improvements that make them perform better. When you think about it The GRS system works on pulsed air like the one from the 1940's and The Lindsay system works on an oscilating system like the Danville air graver. The system three and the danville as well as the Lindsay all when veiwed as simple drawings all look similar. Chris
If you go to google patent searches. The early engraving needle that I listed before was usedn more for stippling. The piston did hit and make the needle point reciprocate. It shows a devive that pulsed the air. It's interesting how not much is new in the way things work. Just improvements that make them perform better. When you think about it The GRS system works on pulsed air like the one from the 1940's and The Lindsay system works on an oscilating system like the Danville air graver. The system three and the danville as well as the Lindsay all when veiwed as simple drawings all look similar. Chris