Time Vectors

John Parkes and Son Marine Chronometer, Liverpool, England 1917 Draft ?? means needs checking or more to write Yes, the most historically significant marine chronometer is John Hamilton's H4, but there is only one and it is in the Royal Observatory Greenwich. So why is this one historically significant? A few reasons it is significant. The English clockmakers dominated the handmade production of marine chronometers through all of the 1800s. The basic design of the marine chronometer clock was substantially unchanged from the early 1800s right through the 1950s until they were replaced by chronometer pocket watches c1900, radio from c1920, then quartz clocks in the mid-1960s??. The design worked, if it ain't broke, don't fix it! Marine chronometer clocks started to be replaced by American made marine chronometer pocket watches in the early 1900s. They were mass-produced pocket watches originally developed for railroad use; more on that in another post. So almost any En

Eli Terry patent wood-works, mass-produced mantle clock c1830 (Draft) ?? means I need to check the information or to write some more! Eli Terry was a pioneer of the mass production of clocks via inter-changeable parts in the early 1800s. He was in relative isolation from mainstream clock making being in Connecticut, USA, rather than England or Europe. The isolation allowed the innovation; he may have had trouble doing it in England against the might of the Clockmakers Guild. I will discuss this more in another post. The movements were initially made of wood as the machinery was available and it kept costs down. Metal machining was mainly done by hand. The screw-cutting metal lathe, with a fixed tool post, was developed in the early 1800s by Henry Maudsley in England. It was to go on to underpin the production of machine tools for the industrial revolution in England. The American clocks were mass-produced from metal from the mid-1800s. Terry saw an opportunity in producing low-

Why "Time Vectors"? My online clock collection. Introduction "Time" is about timepieces. "Vectors" is a quantity and a direction or angle, extending my interest to navigation, to history (direction) of timepieces, national timepiece industries and the influence of timepieces on society. My online clock collection. More museums could do the same as it is hard to vist them in person. Online allows mutiple photos or views to show the details of timepieces. Personal drivers I have diversified my retirement interests from radio and computers to timepieces. Originally my interest was in figurine clocks, as I like Art Nuvo and Art Deco, but on reading about the history of timepieces I have concentrated on historically significant timepieces and related artifacts. Navigation is in my family history. My grandmother's great uncle was Wills, a surveyor, of Burke and Wills fame. They were the first European explores to cross Australia from south to nort