John Harrison's Wooden Clocks - Part 2

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John Harrison's Wooden Clocks - Part 1

John Harrison's Wooden Clocks - Part 1

This video explains the origin of the 1714 Act that offered the 'Longitude Prize' and how the humble country carpenter John Harrison progressed from making simple domestic clocks to more sophisticated precision timekeepers...

Masonic Twin Pendulum Clock

Masonic Twin Pendulum Clock

HiThis is a short video of my recently designed wooden gear clock. It is based on John Harrison's Nautical clock with a masonic theme to it (I'm not a mason I may add). It is powered by a type of gravity remontoire which you will see and hear rewind shortly into the video. It is powered by 4 x D cel...

Wooden Clock Grasshopper Escapement

Wooden Clock Grasshopper Escapement

The grasshopper escapement is an unusual, low-friction escapement for pendulum clocks invented by British clockmaker John Harrison around 1722. An escapement, part of every mechanical clock, is the mechanism that causes the clock's gears to move forward by a fixed distance at regular intervals and a...

Big Grasshopper Escapement

Big Grasshopper Escapement

This is an artistic representation in wood inspired by John Harrison's grasshopper clock escapement design at 1726. A bag of stones drives a big wooden gear which in turn drives a small pinwheel which is part of the big 10 pin escapewheel. My aim was to test out the maximum limits of a grasshopper e...

Dynamic Geomag: John Harrison's H1 Clock

Dynamic Geomag: John Harrison's H1 Clock

This model is inspired by John Harrison's H1 clock. The balls in the middle of the red and green rods are magnetic poles: their attraction guarantees the perfect synchronization of the two pendulums.Questo modello si ispira all'orologio H1 di John Harrison. Le sfere in mezzo ai tiranti rosso e verde...

Geomag 4 Kids: John Harrison's H1 Clock

Geomag 4 Kids: John Harrison's H1 Clock

This model is inspired by John Harrison's H1 clock. The balls in the middle of the red rods are magnetic poles: their attraction guarantees the perfect synchronization of the two pendulums...

John Harrison

John Harrison

His clock and longitude problem...

John Harrison's Wooden Clocks - Part 2

John Harrison's Wooden Clocks - Part 2

With the aid of a replica clock this video shows the unusual features of the precision pendulum clocks built by John Harrison and his brother James between 1725 and 1730...

The Clock That Changed The World (bbc History Of The World)

The Clock That Changed The World (bbc History Of The World)

Of international scientific importance, the Harrison Clock is only one of only three precision pendulum clocks made by John Harrison and instrumental in solving the Longitude problem. The clock was made in 1727 with an amazing fully working wooden mechanism. Plans are in place to display it as part ...

John Harrison Ras Regulator 'replica' - Video 10 Of 13

John Harrison Ras Regulator 'replica' - Video 10 Of 13

Further arbors (axles), wheels and pinions (gears) are added, in order to complete the movement train.A device commonly referred to as 'Harrison's maintaining gear' is installed on the arbor driving the minutes hand (called the centre arbor). The concealed maintaining spring (not shown), maintaining...

John Harrison Ras Regulator 'replica' - Video 5 Of 13

John Harrison Ras Regulator 'replica' - Video 5 Of 13

Apologies for the brief 'DVD Video RAM' message at 2 mins 10 seconds: please don't be mislead into thinking that the video has ended. Spielberg need have no fears of competition from me, that's for video shows the first stages of construction of the 'replica' of Harrison's masterpiece, beginning wit...

Harrison H1 Clock

Harrison H1 Clock

Replica of John Harrison marine chronometer clock to help calculate Longitude. a long-sought after device for solving the problem of establishing the East-West position or longitude of a ship at sea, thus revolutionising and extending the possibility of safe long-distance sea travel in the Age of Sa...

Making The #6 Part2. A Wooden Gear Clock.

Making The #6 Part2. A Wooden Gear Clock.

This mini movie shows my progress in making a wooden gear clock designed by Clayton Boyer, The Number 6. You can find many more of his cool designs at...