Lighthouses Mercury
lighthouses mercury
 |
No items matching your keywords were found.
Can anyone direct me to a source which explains how the mercury bearing for a lighthouse functioned?
Preferably with mechanical engineering drawing or pics.
Mercury bearings involve the weight of the object "floating" on a rather small amount of mercury. I say "floating" because the bearing normally involves a matched pair of hollow cylinder case and inserted cylinder post. The post carries the object and the case holds the mercury. Often the "post" was donut shaped so the case looked like a round race track. A mechanical bearing keep them centered. The space between them was quite narrow, 1/8" or so. When under load, the mercury went across the bottom of the case and up the sides between them, applying a force just to the bottom just the same as if there was a huge puddle of mercury with a boat in it of the same displacement. Mercury 30" deep provides a force of almost 15 pounds per square inch so if the case was just over 30 inches deep and the bottom area was 30" across and 5" wide (392.6 sq inches) it could support about 5890 pounds. A 1000 pound lens system would take a rise of about 6"
Here is a plan http://www.southsolitaryisland.com.au/userimages/LighthousePlan.jpg but the slot for the mercury bearing has to be almost divined out at the rim, I believe - copy the image to a photo processing or viewing software where you can enlarge it even more (IE8 automatically reduces it to fit, but clicking will enlarge) This is the source http://www.southsolitaryisland.com.au/page9.htm which discusses the head on this and a linked page to the lantern which gives dimensions.
 |
EAGLE EYES PAIR SET RIGHT & LEFT HEADLIGHTS HEADLAMPS LIGHTS LAMPS Sale Price: $36.72  |
|
All of our products are of the highest quality. If you have any questions about fitment please contact us before ordering to assure satisfaction. |
 |
GRILLE Sale Price: $66.17 |
|
All of our products are of the highest quality. If you have any questions about fitment please contact us before ordering to assure satisfaction. |
 |
FORD/MERCURY VAN ECONOLINE VAN E150 | E250 | E350 TAIL LIGHT LEFT (DRIVER SIDE) (CLEAR/RED) 1995-2003 List Price: $0.00 Sale Price: $13.39 |
|
95-03 FD ECONOLINE VAN TL LH RD/CLR 00-03 FD EXCURSION TL LH |
 |
OE Replacement Mercury Mariner Passenger Side Fog Light Lens/Housing (Partslink Number FO2595103) Sale Price: $32.17 |
|
The aftermarket replacement product offered on this page does not have a UPC (Universal Product Code) associated with it. Without a UPC, the manufacturer of this aftermarket product cannot be verified, and the brand name has been labeled as "unknown"... |
 |
OE Replacement Mercury Mariner Driver Side Fog Light Lens/Housing (Partslink Number FO2594103) List Price: $0.00 Sale Price: $32.17 |
|
The aftermarket replacement product offered on this page does not have a UPC (Universal Product Code) associated with it. Without a UPC, the manufacturer of this aftermarket product cannot be verified, and the brand name has been labeled as "unknown"... |
 |
EAGLE EYES PAIR SET RIGHT & LEFT HEADLIGHTS HEADLAMPS LIGHTS LAMPS EXCEPT 2001 SPORT Sale Price: $41.50 |
|
All of our products are of the highest quality. If you have any questions about fitment please contact us before ordering to assure satisfaction. |
 |
HEADER PANEL Sale Price: $51.00 |
|
All of our products are of the highest quality. If you have any questions about fitment please contact us before ordering to assure satisfaction. |
 |
EAGLE EYES RIGHT REAR/BACK TAIL LIGHT TAILLIGHT TAIL LAMP Sale Price: $24.17 |
|
All of our products are of the highest quality. If you have any questions about fitment please contact us before ordering to assure satisfaction. |
 |
GRILLE CHROME Sale Price: $17.97 |
|
All of our products are of the highest quality. If you have any questions about fitment please contact us before ordering to assure satisfaction. |
