Who invented the pedometer: the artist, the president and three well-known watchmaker

Once again faced with the fact that most electronic pedometer count the 'false' steps, and if you have any of these devices, rock hand a couple of times to see this ... So, once again faced with similar, I attended , so it was always there, and for that I had to remember the names of all who are called the "Father of the pedometer", starting with Leonardo da Vinci.





Under the cut a small selection of names.




Leonardo

Nice husband Renaissance that just did not do, and a lot of it, he sketched, so Leonardo dump everything. Even at the institute we were taught if you do not know what, and when there was, look at him if he is simple-minded - we can say that "something" was created by the Romans; if clearly established - Egypt and China; If tempted - Leonardo da Vinci.



This figure, which is replicated in any children's encyclopedia, the device, which is called the ancestor of the pedometer is essentially an odometer that has been used for military purposes to optimize the maps of the time, helping to calculate the distance that day the troops. Thus, precise references to the fact that it has ever been realized or - no.

The fact that Leonardo was fascinated by the creation of such "gadgets" can speak his watch sketches, here, for example fusil, which was of fundamental importance to the invention of the free travel of the anchor.



But again - the confirmation of completed projects pedometer or hours of Leonardo's drawings there. A significant part of the drawings, including his pendulum mechanism can be found in the "Code of Madrid." Do they have a direct relation to a pedometer - it is not clear, but we can see that the rope is wound around an axis, should drive the gear, the teeth of which can count the distance, such as swinging of the pendulum may be effected by a step.



Researchers date these drawings in 1492 year.

Jefferson

Obama is Fitbit, but it is not the first US president, who used hand-held technology. Here is a letter from Thomas Jefferson in 1788:

"Send your pedometer. Tie one end of the tape to the loop pedometer, and the other end of the tape, attach a small hook ... cut a small hole in the bottom of your left pocket, thread the ribbon through the hole, run down the trouser belt and fasten the hook to the strap, tied at the knee, an inch from the knee; then attach the pedometer itself to the upper edge of your pocket. At each step of your tape stretched the entire length and exactly a pedometer counts your steps. The long arrow shows the units and tens of steps, flat arrow - hundreds, and the short arrow shows the pedometer thousand steps. "



It seems to be talking about a small mechanical device with gears inside, possibly adapted hours, the movement of which is stimulated by step. In this sense, we face a real pedometer, and probably the most accurate.

But it is not the first "device" of this nature. Slightly earlier, in 1525. Jean Fernely has presented his device, which was based on a system of cogwheels and gears, which are driven by a kind of "swing arm", which rotates the arrows on the four dials sequentially counts units tens, hundreds and thousands of steps.



Walking person could, for instance, attach a "pedometer" to the left at the waist and tie cord "rocker" to his right knee. At each step, the cord pulls the lever and the lower dial hand moves by one. When the arrow on the dial of units held from 9 to 0, the arrow on the dial dozen moves per unit. When the arrow tens, in turn, extends from 90 to 0, the pointer on the dial moves one hundred unit, and so on.

Thus, the automatic mapping provides a sequence of units of each decimal order.
Moreover, this invention was the forerunner of the legendary "Pascaline", and then it's time to think about what is common in pedometer and a calculator!



The principle of "Pascaline» i>

"False" steps appear somewhat later, with the clock, which has a function of automatic winding.

The dispute about who is the author of the concept of mechanical watches with a car factory, already fading. Members of the dispute: Perrelet and Sarton
Action mechanism Perrelet who, on the assurances of the Wikipedia, yet it has created in 1780 Pedometer, for themselves, for the soul, based on the principle of voltage winding spring hours due to mechanical motion.



Drawing signed Sarton i>

From that moment the history of hours and kind of like a pedometer go hand in hand, and in one edition devoted hours from 1952 strongly ask them not to be confused, as they are completely different devices!

Guess where that:



Pedometer Model 1952:



The system Automobile adjust and improve, so if we talk about the contribution of watchmakers in creating the pedometer, that include a list of the "fathers" can be through one! But the "new era" car factory started in 1924 with Harwood.



His watch models use an automatic plant of the "bumper" (There are some "Omega", for example). The system of so-called because of the fact that in the winding mechanism of the oscillating movement of the load voltage is transformed into a clockwork spring.



When the movements of the wrist of the person wearing watches, fluctuating load mechanism makes an arcuate motion back and forth. Fluctuating load automatic winding mechanism is suspended for movement in both directions, but the original effect of winding watch comes only when moving the load only in one direction.

The mechanism was operated at any movements, load fluctuations were fixed on two sides by two buffer springs that provide a reverse "bounce" load in the opposite direction.



To prevent excessive tension spring Harwood invented and patented blade spring mechanism, which holds the friction disc in a certain position, thereby coupling which stops the spring tension when the operating spring is tensioned already maximally.

However, to speculate on the names of watchmakers long time does not work, because after all they wanted to do hours and hours doing, and what their development lay the foundations pedometers in their little concern.

Nowadays, one of the "preachers" pedometer became Esir Hatano. In the 1960s, he started selling Manpo-kei, the device, whose name translates to 10,000 steps. Professor is very concerned with the problem of obesity among Japanese, and studies have shown that they go quite a bit. Marketing and little credibility made and the doctor, and his popular device!



On electronic pedometer, and so you know better than me.

Take care of yourself!

Source: geektimes.ru/company/medgadgets/blog/250670/

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