Novel anode adjustment apparatus

In a mercury cell comprised of a cell body, a cell cover, anodes positioned within said cell body having anode posts extending through openings in said cell cover, and an anode adjustment means positioned on the top of said cell cover to adjust the distance between said anodes and said mercury, the improvement which comprises employing as said anode adjustment means an apparatus comprised of:

• a. a central base member positioned on top of said cell cover substantially parallel to the sides of said cell body,
• b. at least two threaded upright posts having the bottom of each secured at spaced intervals to the top of said central base member,
• c. a worm gear adjuster secured to the top of each of said threaded posts, said worm gear adjuster being comprised of:
• 1. a worm gear housing secured to a central anode support member positioned above said central base member and spaced apart therefrom,
• 2. a worm gear having a threaded central opening adapted to rotate about the top of said threaded post,
• 3. a threaded worm adapted to mesh with threads on the circumference of said worm gear, said worm being positioned substantially parallel to said central anode support member,
• 4. a rod secured to and joining each of said worms,
• 5. a plurality of anode support arms secured at spaced intervals along said central anode support member,
• 6. a plurality of anodes secured to opposite sides of each of said anode arms, and
• 7. means for rotating said rod, whereby said worms are rotated, said worm gears are rotated, and said central anode support member, said anode arms and all of said anodes secured to said arms are raised or lowered in the direction of movement of said worm gear on said threaded posts.