19th Century Harpoonlog A1 – T.Walker, Birmingham

19th Century Harpoonlog A1 – T.Walker, Birmingham

Stock Number: NM. 2-21

E 1075,=

Walker took out a patent for the A1 Harpoon Log in 1861.

Country of manufacture

UK and Ireland

Category: Navigational instruments

Description

From the 17th century onwards people had made many attempts to devise a mechanical log which would automatically record the ships distance done. Edward Massey invented a mechanical log in 1802 with four blades which was used by the Admiralty from 1807-1815. As the rotator was dragged behind the ship then the log rotated and the revolutions were transformed in miles on the dials, to be read after the rotator was brought on deck. The design of Massey was further refined by Thomas Walker and Son, including the stabilizer. Walker took out a patent for the A1 Harpoon Log in 1861.

The earley serial number 3380 suggest manufacturing around 1862 – 1863.

A1 refers probably to the A1 specifications of Lloyds Shipping Insurance as being the best that could be produced.

 

On the log there are three dials, the first registers the miles up to 100, the second registers the units up to 10 mile, the third registers quarters of a mile.

In the five rotator blades is stamped an anchor with T.W.

 

The original chest of pine with cautions and the Walker sticker is also complete with signs of using and painted in romantic redbrown.

 

Date: 1862-1863

HWL case: 17x59x17 cm   (6,8×23,2×6,8 in)

Signed: T 3380

Origin: England

Condition: perfect with signs of use

 

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NL ARCHIPEL - International Maritime Galery

Archipel – International Maritime Galery in the Netherlands, sets itself to maritime objects of before 1900. The managing director worked as officer with the mercantile marine and the Royal Navy. As curator he was connected to one of the university museums in the Netherlands. As seaman and curator he has a lot of knowledge of naval history.

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