19th Century T Walker’s Patent Harpoon Ship Log a 1 London Antique Maritime Tool

Log o solcometro contamiglia nautico in ottone a forma di harpoon, signed T. Walker's Patent Harpoon Ship Log A 1 London , from the second half of the 1800s. It is an ancient nautical instrument, very rare and with a characteristic shape, which measured the distance and speed of a ship. Veniva gettato fuori bordo e trascinato dietro la nave stessa; ruotando grazie alla sua elica, trasmetteva il numero di giri fatti su se stesso ai tre quadranti realizzati su una placca in metallo smaltato posta al centro del log; i quadranti riportavano le misurazioni in miglia da 0 a 100 in decine, da 0 a 10 in unità, da 0 a 1 in quarti. I dati venivano poi letti ogni ora per ricavare anche la velocità. Good condition replaced flap perfectly working and mounted on custom-made brass wood base. Measurements length cm 54 - 21.2 in, propeller diameter cm 13 - 5.1 in. The last photo is the gift box. In past centuries, the attempt to measure the speed of ships was severely hampered mainly by the 'unavailability of time-measuring instruments of sufficient accuracy: by throwing a piece of wood overboard from the bow of a ship and measuring the time it took to reach the stern, it was possible to obtain some information about the speed of the ship itself, but with many errors and inaccuracies. The principle of the mechanical solcometer was explained to the Royal Society in 1699 by Robert Hooke, but the first model produced for commercial use was not patented until 1802 by Edward Massey...

Wooden antique ship model of a cargo-carrack, probably from Genoa, with three masts, end of the 19th century. Very good conditions. Measures: Length cm 70 - inches 28, height cm 56 ...

Brass sextant signed Imray & Son 89 & 102 Minories London, datable to around mid-19th century, instrument housed in its original mahogany box shaped like the instrument with hinges, ...

Barometer complete with clock signed F. Somalvico N ° 11 Brook Str. Holborn London datable between 1810 and 1820. Finely crafted mahogany wood case with cedar wood edges. Large silve...

19th century dental tool kit A rare set of 19th century dental tool kit, all tools are encased in a wooden box with brass latch and lined with a worn red...

Wooden ship wheel with brass trim (19th Cent)

Antique ships compass with interesting Dutch lettering. Spun brass bowl with gimbal. Fitted to a primitive dovetailed box. Circa 1880. With compas...

A set of 19th century dental hygiene tools. A set of 19th century dental hygiene tools, encased in a faux leather red box with brass latch and lined with a worn green velour Material. Its original mirror is still in place with folding back velour cover. Size of inches: H 0.75” x W 2.75” x D 2.5 Completely solid in structure and form, with natural wear and patination across all surfaces due to age. In overall presentable condition considering its age and years of use. The tools are worn on the edges, god knows how many mouths its been in. The House of Antiques...