www.antik.it/Nautical-antiques/7070-Walker-log/
Code 7070
EUR 1100.00
In stock
1633598312Code 7070 Walker logBrass log signed Walker’s Excelsior IV Patent Log, For Yacht, Motor Launches and Fishing Craft made in the early 1900s.
Placed in its original wooden box with brass hinges and closing hooks, complete with accessories. Very good condition. Box size 38.5x18x15.5 cm - 15.15x7x6 inches.
It is an ancient nautical instrument, which measured the distance and speed of a ship. The propeller was thrown overboard and dragged behind the ship itself, rotating it transmitted the number of turns made on itself to the three quadrants of the log. The data was then read every hour to also derive the speed.
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.
In the past centuries the attempt to measure the speed of the ships was especially hindered by the lack of tools for the measurement of time of sufficient precision: throwing a piece of wood into the sea from the bow of a ship and measuring the time it took to get at the stern, it was possible to obtain some information on the speed of the ship, but with many errors and inaccuracies.
The 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.
FAQ
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Of course! The legislative decree n. 42/2004 stipulates that who sells works of art or historical and archaeological items has the obligation to deliver to the purchaser the documents attesting to the authenticity of the object, or at least to submit the documents relating to the probable attribution and origin. Antik Arte & Scienza provides an expertise (as warranty) that contains a description, period and assignment or the author, if known, of the item.
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Shipping by DHL or UPS is free (but if we are shipping to a country non-EU remember that any taxes and customs duties are on your expense), and items will be sent just after receiving of payment.
Italy: delivering on the average in 24 h.
Europe: delivering on the average in 2/3 weekdays.
Other countries: delivering on the average in 5 weekdays; custom duties charged to the buyer.
Is shipping insured?
Of course! Free insurance by Lloyd's London that covers almost all destinations.
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Of course! (see our general terms for more information).
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Nautical antiques
Code 7070 Walker log
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