System for mixing concentrate and water to form fountain solution for offset printing presses

A system for continuously and automatically mixing concentrate and water to form fountain solution comprising:

• (a) a water motor including a reciprocating piston having a stroke of fixed distance;
• (b) first water motor valve having first and second operating chambers;
• (c) a second water motor valve having a first and second operating chambers;
• (d) a first conduit at one end of said water motor adapted to communicate with first and second operating chambers of said first water motor valve;
• (e) a second conduit at the other end of said water motor adapted to communicate with said first and second operating chambers of said second water motor valve;
• (f) third water conduit means extending from one of said operating chambers in said first and second water motor valves;
• (g) a concentrate pump having a cylinder and piston therein and adjustable means interconnecting said water motor piston and said concentrate pump piston;
• (h) a concentrate valve in fluid communication with said concentrate pump;
• (i) a concentrate conduit extending from said concentrate valve into fluid communication with said third water conduit means to form a mixing conduit for mixing concentrate and water;
• (j) pneumatic means operatively associated with said water motor pistons and said water motor valves to move said water motor piston to cause water to flow into or out of said first and second operating chambers of said first and second water motor valves and into said third conduit means;
• (k) pneumatic means operatively associated with said concentrate pump and said concentrate valve for causing concentrate to flow through said concentrate valve and into said mixing conduit;
• (l) pneumatic valve means for actuating said pneumatic means;
• and
• (m) means connected to said reciprocating water motor piston for actuating said pneumatic valve means.