William Harris
Biography1728 - 1815
About the artist
William Harrison (20 May 1728 – 24 April 1815) was an English instrument maker, the son of John Harrison, inventor of the marine chronometer.
He was born in Barrow-upon-Humber but moved to London to assist his father in developing the chronometer. In 1761 he sailed to Jamaica on HMS Deptford in charge of his aged father's latest development, the "sea watch", now known as the H4 marine watch, which was to undergo critical performance trials during the transatlantic crossing. Parliament had offered a large prize (20,000 pounds) for a practical working solution to the problem of determining longitude at sea and set up the Board of Longitude to evaluate submissions. In spite of the success of the H4 trials, where the timepiece was shown to be very accurate and reliable and had enabled the longitude to be accurately determined, the Board of Longitude insisted on a second transatlantic crossing to confirm the results. He undertook a second voyage in 1764, sailing to Barbados on HMS Tartar. However, the Board of Longitude were still not convinced that the conditions for the prize had been met.
He then worked with his father, who was now in his late 70s, to produce the H5 chronometer which in 1772 they demonstrated to King George III with great success, gaining the king's support in their fight for the prize offered by Parliament. They were eventually awarded a sum of money, but not the full amount originally offered.
He was elected a Fellow of the Royal Society in 1765, his candidature citation reading "Mr William Harrison of East Street Red Lyon Square, being desirous of the honour of becoming a Member of this Society, Is recommended by us as a Person well skilled in Mechanicks, and several other useful other parts of Mechanical learning, and well known to the learned not only in this Kingdom, but several parts of Europe, for his careful Experiments for the discovery of the Longitude at Sea and therefore we think he will be an useful member of this Society." He was described as a Scientific Instrument Maker.
He was born in Barrow-upon-Humber but moved to London to assist his father in developing the chronometer. In 1761 he sailed to Jamaica on HMS Deptford in charge of his aged father's latest development, the "sea watch", now known as the H4 marine watch, which was to undergo critical performance trials during the transatlantic crossing. Parliament had offered a large prize (20,000 pounds) for a practical working solution to the problem of determining longitude at sea and set up the Board of Longitude to evaluate submissions. In spite of the success of the H4 trials, where the timepiece was shown to be very accurate and reliable and had enabled the longitude to be accurately determined, the Board of Longitude insisted on a second transatlantic crossing to confirm the results. He undertook a second voyage in 1764, sailing to Barbados on HMS Tartar. However, the Board of Longitude were still not convinced that the conditions for the prize had been met.
He then worked with his father, who was now in his late 70s, to produce the H5 chronometer which in 1772 they demonstrated to King George III with great success, gaining the king's support in their fight for the prize offered by Parliament. They were eventually awarded a sum of money, but not the full amount originally offered.
He was elected a Fellow of the Royal Society in 1765, his candidature citation reading "Mr William Harrison of East Street Red Lyon Square, being desirous of the honour of becoming a Member of this Society, Is recommended by us as a Person well skilled in Mechanicks, and several other useful other parts of Mechanical learning, and well known to the learned not only in this Kingdom, but several parts of Europe, for his careful Experiments for the discovery of the Longitude at Sea and therefore we think he will be an useful member of this Society." He was described as a Scientific Instrument Maker.
