The first mechanical clock appeared much earlier than our homes were lit with light bulbs, long before the invention of street lights. And immediately there was a problem: the clock dial easy to read in daylight, but try to see the dial at night ... No luminous paint was known then. Instead, they came up with repeater - watches that “play” time at the owner will.
Let's start with the fact that the repeater and striking clocks - not the same, although they may well coexist in a single package. Striking clocks automatically announce the time as it goes, even when its statement is not required.
For example, you are not going to sleep and waking up every time just to hear the time. Repeater also tells you this information, but if you ask it - pulls the rope, push a button or lever. And not once, as much as you want, as long as it have enough winding.
This design allowed our ancestors in total darkness without lighting a candle; get answers to the perennial question of time. By the way, before the invention of matches sparking the flame was a very tedious task. And as for a traveler waiting for the dawn, passing the night on the road, in the dark carriage repeater was a salvation.
But even with light of day, it was nice from time to time to listen to the melodic beats. It is not surprising that the quarter-repeater device was patented in far 1687 by English watchmaker Daniel Quare by His Majesty King James II
It is a good time in a story, about what kinds of repeaters do occur, and how to determine the time by it chimes. Typically, repeaters are able to reproduce the sounds of only two tones: low and high. For each of it responsible its own pair of gongs hammers. But even such modest means arsenal allows us to know the time to the nearest minute, although not in all models.
Quarter-repeater chimes full hour strikes with low tone, and the number of the last quarter of the next hour - higher. By clicking the button, for example, at 23:56, you will hear 11 low tones and 3 high.
Five-minute repeater chimes high tones, as the name implies, five-minute intervals, and a quarter is determined dual chimes of both hammers. In the same five-minute repeater 23:56 11 low, 3 double and 2 high tones. But more often a simple five-minute repeater doesn't chime quarter - you will hear the first 11 low, and then the same high tones.
In the minute repeater high tone is responsible for minutes. At 23:56 repeater will respond 11 low, 3 double and 11th high tones. However, there are minute repeaters, which corresponds to the double tone a quarter and five-minute intervals.