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Brass Log Signed Walker’s Excelsior IV Patent Log, 1920 circa



Brass log signed walker’s excelsior IV patent log , For Yacht, Motor Launches and Fishing Craft , 1920s circa, with accessories and placed in its original wooden box. Very good condition. Box cm 38.5 x 18 x 13 - inches 15.15 x 7 x 5.11. In the past it was very difficult to measure speed of ships because of lack of precise instruments to measure time: throwing a piece of wood outboard from the prow of a ship and measuring the time to arrive to poop, it was possible obtain some information about speed of ship, but with many mistakes and inaccuracies. Principle of mechanical patent log was shown to the Royal Society in 1699 by Robert Hooke, but the first model produced for commercial use was patented just in 1802 by Edward Massey uncle of Thomas Walker, that succeeded him in business. Thomas Walker patented his first Walker log in 1861, patenting the A1 Harpoon Log two years later. His son, Thomas Ferdinand Walker, patented in 1897 the Cherub log, providing a far more accurate reading. Formally completed in 1912, Thomas Walker & Son LLC installed their headquarters in Oxford Street in Birmingham, and the business was continued by the grandson of Thomas Walker, Thomas Sydney Walker.


  • Dimensions
    Height: 5.12 in. (13 cm)Width: 15.16 in. (38.5 cm)Depth: 7.09 in. (18 cm)
  • Materials and Techniques
  • Place of Origin
  • Period
  • Date of Manufacture
    1920 circa
  • Condition
  • Seller Location
    Milan, IT
  • Reference Number
    1stDibs: LU102029399163

Shipping & Returns

  • Shipping
    $108.90 Standard Shipping
    to anywhere in the world, arrives in 6-8 days.
    We recommend this shipping type based on item size, type and fragility.
    Ships From: Milan, Italy
  • Return Policy

    A return for this item may be initiated within 3 days of delivery.

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About the Seller
5 / 5
Located in Milan, Italy
Platinum Seller
This distinction is for experienced sellers who continually surpass customer expectations.
Established in 1999
1stDibs seller since 2014
185 sales on 1stDibs
Typical response time: 1 hour
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