Young metallurgists, participants of the exhibition NTTM-78, developed a key for their production needs: screwing graphite electrodes Ø 300 mm electric steel furnaces. However, they believe that the principle laid down in its design, applicable and to create a tool with the other, but a close target (for example, for unscrewing the studs).HIDDEN SCREEN
A screen behind which to change, it is sometimes simply necessary. Especially in a Studio apartment. But what design to choose? I propose a very simple secret. Enough to bring down the frame of wooden bars 35X17 mm (with one diagonal brace), cover it with fabric matching colour and attach piano hinges to the inside Read more…
In the Arctic tundra and in Antarctica, the snow-capped mountain slopes and in the forest most of the year working tirelessly snowmobiles — reliable support person. The combination of a lightweight gasoline engine, V-belt CVT and rubber tracks — that is, essentially, the whole wisdom underlying most of these machines. At first glance, not too difficult combination. But it took a lot of time and labor to make this “Troika” to work together.
The temperature of the soldering iron usually adjusted using Later. However, such devices are bulky, inconvenient for transportation. Significant benefits in this respect have electronic regulators. Thyristor controller — scheme presented in figure 1 — changes AC voltage at the electric soldering iron with power up to 50 watts 110 to 220 V.
Projects and experienced first instances of jet aircraft with variable geometry wings appeared during the Second world war: in our country the project of this aircraft was developed V. V. Shevchenko and German company “Messerschmitt” even built experimental aircraft Р1101, which went to the Americans as a trophy. On the basis of the firm “bell” has created two pilot cars X-5, taking into account the requirements of the U.S. air force to the aircraft-attack aircraft. The first is constructed from X-5 first took to the air July 20, 1951 two years later, on may 19, 1953, in the United States flew another prototype aircraft with variable wing geometry — Jaguar XF10F-1, proposed by the Grumman American fleet. The tests confirmed a significant improvement in flight performance of the aircraft due to the wing using variable geometry, but the final results of flight tests were negative. And only eleven years later, on December 21, 1964, made the first flight of the aircraft with variable wing geometry XF-111A, designed by the firm “General dynamics”, accepted in 1967, the U.S. air force.
Every year our industry produces more and more cars. Today while driving to meet a man of almost any profession — the engineer, doctor, architect and worker, farmer and teacher. On how to properly operate the vehicle, i.e. when to change the oil, how to choose candles, what to do in case of certain faults, see the respective manuals and instructions. About the little things, facilitate the daily care of the motorist, they write, unfortunately, is not enough. The purpose of this publication is to some extent fill this gap.
Created wristwatches that do not require vision or hearing. Instead of traditional watch hands, the time is indicated by two balls – one indicating minutes (top), and one indicating hours (side). These two balls are connected with magnets of the movement. The watch is made so that even if the balls are moved when touched, they are easily returned to the correct time with a gentle shake of the wrist.