Watch: calendar rules
Watch evolution over the centuries, initially on the surface only two to three hands. People often are not satisfied at the beginning of reflection, whether need to add a pointer? Increased mean adding function, initially watchmakers are from the” calendar” began to add. With the development of the situation, the calendar also evolve into a different clan.
In ancient Egypt, the Nile flooded approximately every 365 days apart. It has also been found in June of each year a day in the morning, when the tide came today near Cairo, Sirius and the sun rising above the horizon. According to this, the ancient Egyptians had a year is scheduled for 365 days, while the Sirius and the sun on the horizon that day as a starting point. A year is divided into 12 months, 30 days per month, at the end of the year plus 5 day as a holiday, this is the Egyptian sun calendar — the earliest calendar. Although the later Caesar” Julian calendar”, the Pope of Rome” the Gregorian calendar, the solar calendar is its loopholes appeared one after another.”, and even some ridiculous, but it at least than those squat stone draw the line here and a lot of progress.
The calendar is based on the day, Japan is the sun two irradiation object without a shadow of that time. Historically, a calendar display appears as early as sixteenth Century in the watch again, to nineteenth Century, modern mechanical watches modeling basic stereotypes, based on this level, calendar began to put up a pageantry points race, such as pointer calendar, calendar, calendar, flying windows without visual drop windows calendar. Each of the different internal mechanical structure affects the appearance of the calendar, the top movement calendar used by the more sophisticated technology, more and more complex.
Early watches is a pointer type calendar in the world, after all, let the balance disk is the sudden appearance of the window to break the pattern was unthinkable. As a result of window type calendar display in manufacturing difficulty is greater, so until the nineteen seventies, with the development of industrial technology, window type calendar to gain popularity. Windows calendar and pointer calendar function the same, but the visual effect are existing bigger difference. Especially for complex watch pointer type calendar, which is complex and organized. Relatively speaking, windows calendar more intuitive, more logical pointer calendar.
Pointer calendar direct digital brand in the disk, the pointer moves one space to count every 24 hours, which belongs to the very basis of technology. As the disk constraints, from the thickly dotted number to distinguish the date is not a pleasant thing to eye. In recent years many brand will be the calendar disc radius expands to outer ring, so as to ensure clear and readable, and derive a new technology — flying back type calendar. It is no longer too observant of conventional standards. To round, but has used the fan disk, at the end of the last instant bounce to the starting point.
Windows calendar pointer calendar is the most powerful rival, because in all of the calendar, the most concise style is windows calendar. Its mechanism is mainly dependent on the outer edge of the calendar circle movement of rotation changes the window under the date of. Early introduction of gradual change, that is often said that the 9 p.m. to 3 a.m. can not adjust the date, because at that time the internal gear is meshed state. Although we can not simply through the calendar to determine the type of movement is good, but really big brands will choose to instant jump type calendar, instant jump calendar without adjuswatch blind, you don’t have to worry about being dangerous moment restrictions. It makes use of an eccentric cam and a flat perforated Ruby collocation, top lifting calendar mechanism. Nearly 24 hours of rotation make it just one step away from the edge in the twenty-three fifty-nine, 59 seconds for a moment, ruby pick slide to cam the recessed portion, the instant slide also moved the date.
In Windows calendar era, there are two brands have different contributions. First of all, the Rolex calendar has 2.5 magnification, enhance the wearer a eye identification probability, to fully reflect the focus on practical and humanized design. More important is that it realizes the true meaning of the ” instant jump”, many fans will even Rolex instant jump accuracy as measured by other forms of standard. Secondly, Jijia watch in 1967 invented” the fast calendar mechanism” and obtain a patent. The mechanical structure can be achieved by the crown to a fixed gear, so that the calendar round and round off time correlation, so can individually adjust the calendar. So far, windows calendar to break the bottleneck, to enjoy the convenience of klystron.
The calendar is the largest” big window calendar”, it is the most popular display mode. The earliest large calendar by GP form was invented in 1930, due to various reasons, until 1994 in the German brand Lange command get opportunity to carry forward. Since then, big calendar design wind fan temporarily, all senior brand imitate. Lange scale launched the world’s first mature technology of large calendar watch, in the industry has a great disturbance light immediately. Lange ‘s calendar is not accidental inspiration, as early as 1841, Lange founder father and teacher Mr. Gutkaes has built a 5 jump word bell, also is the modern accepted large calendar source of inspiration. In 1950, someone tried to use ten digits and a median of two independent disk to expand the calendar disc area, unfortunately the technical conditions at that time produces the movement of bulky had to give up. Mature technology Lange large calendar in two disc marked with 1 ~ 3 , 0 ~ 9 , the period of traversing 31, a wheel to stay for 24 hours , only ten digit dial to blank only, it is the technical difficulty of calendar. Different brands of large calendar between great distinction, first of two calendar disc does not exist between the visual gap, followed by two wheel at the end of the month when the unity of a jump, but these have been the end of the last moment to identify quality.
In view of this, the calendar is not only a jump in the number, the pool behind watchmakers great effort, as well as the calendar and creating new mechanical structure evolution.