Dent (clocks and watches) Dent (clocks and watches) Dent was a London manufacturer of luxury clocks and watches, founded by Edward John Dent. Dent began making watches in 1814, although it wasn’t until 1876 that the Dent triangular trade mark was registered. Perhaps the company’s biggest coup is winning the contract to make the clock for the new palace of Westminster – or Big Ben as it’s more commonly known. Edward John Dent (1790-1853) discovered his passion for horology from his cousin, Richard Rippon, himself a master watchmaker. Dent established his own company in 1814, and developed a reputation as a builder of accurate
History of watches present in weight-powered clocks. The force provided by a spring is not constant, but decreases as the spring unwinds. The rate of all timekeeping mechanisms is affected by changes in their drive force, but the primitive verge and foliot mechanism was especially sensitive to these changes, so early watches slowed down during their running period as the mainspring ran down. This problem, called lack of isochronism, plagued mechanical watches throughout their history. Efforts to improve the accuracy of watches prior to 1657 focused on evening out the steep torque curve of the mainspring. Two devices to do this had appeared