1 / 36

Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool

Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool. SLOC Meeting 21 June 2013. Doodson-Légé Machine. William Thomson, 1st Baron Kelvin ‘Father’ of Tide Prediction (TP) Machines. First (official) tide Prediction machine by Sir William

arama
Download Presentation

Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013

  2. Doodson-Légé Machine

  3. William Thomson, 1st Baron Kelvin ‘Father’ of Tide Prediction (TP) Machines

  4. First (official) tide Prediction machine by Sir William Thomson (Lord Kelvin) 1872, now in Science Museum. 10 constituents.

  5. Edward Roberts Another father of Tide Prediction machines

  6. India Office Machine 1877 made by A. Légé & Co., London to design of Edward Roberts. 20 (later 24) constants.

  7. Tide Prediction Machines • Only 25 Tide Prediction (TP) machines were ever built (plus models and prototypes no doubt) • Three machines were associated with Bidston: the ‘Kelvin’, ‘Roberts’ and ‘Doodson-Légé’ machines • The DL machine with 42 constituents was one of the last and largest although not the largest ever (see below).

  8. Kelvin Machine • The Liverpool Tidal Institute was funded in 1925 by Charles Booth (Booth Shipping Lines) to buy a new 25-28 constituent prediction machine (the Kelvin machine) for its sole use. • Doodson took a lead in its construction and operation and used the machine to start an important business in tide table production. • The Kelvin and Roberts machines were used for D-day predictions etc. • The Kelvin machine was given (or sold) to SHOM after WW2 and used up until 1966. (Moved to Brest in 1970). • An explanation how it worked in Joyce Scoffield’s book.

  9. Bidston Kelvin Machine

  10. Bidston Kelvin machine now in lobby of SHOM at Brest

  11. Roberts Machine • When HWT Roberts (son of Edward) died in 1929, the LTI (Doodson) took over the Roberts business. • That brought the ‘Roberts’ TP Machine of 1906 to Bidston, which was larger than the LTI machine (it had 40 constituents) but in need of an overhaul which Doodson oversaw. • Beware it is called the ‘Légé machine’ in Doodson publications • The Roberts machine now in the Liverpool Museum.

  12. Roberts “Universal Tide Predicter” of 1906, winner of the “Grand Prix” of the Franco-British Exhibition of 1908

  13. Doodson Machine • Doodson’s final involvement with machines was the DL installed in 1950. • 42 constants

  14. Doodson-Légé Machine

  15. A Couple of Other MachinesValued by their Owners

  16. Now in lobby of Norwegian Hydrographic Office Stavanger

  17. One Other MachineNot Valued by its Owner

  18. Roberts machine

  19. Most of the others we know where they are or what happened to them e.g.- India machine now at Dehra Dun- Philippines machine Others we don’t - but must be easy to find if we had the time e.g. Spanish and Argentina machines

  20. Plan now is for Julie Ledder to get either the Roberts machine or Doodson-Lege machine back on loan from NML for display in the JPB atrium when building work is finished – watch this space.

More Related