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TODAY IN HISTORY

    TELEPHONE SWITCHBOARD
    January 17, 1882 - Chicago, Illinois, U.S.A.

    A telephone switchboard was issued a U.S. patent to Leroy Firman of Chicago, Illinois (No. 252,576), which was assigned to the Western Electric Manufacturing Co. Also of Chicago. With his invention of a “multiple switchboard for telephone exchanges,” Firman addressed the problem of increasing numbers of subscribers. Previously, single switchboards, each with an attendant, served their group of individual lines. A large exchange was thus divided up into a number of internal exchange switchboards which were worked together as necessary, with trunk lines between the boards. Firman devised an arrangement to handle an exchange of a thousand or more subscribers with line status information exchanged between switchmen.

    PUNCHBOARDS
    January 17, 1905 - Chicago, Illinois, U.S.A.

    The first U.S. patent was issued for a punchboard to Charles A. Brewer and Clinton G. Scannell of Chicago, Illinois, described as “vending devices.” They were manufactured by Charles A. Brewer & Sons in the same city. (No. 780,086). Even though the equivalent of punchboards had been around for many years, they had never been available in such a neat and portable form. The invention of board stuffing machines and ticket folding and plaiting machines in the late 1910s was probably the key factor which allowed the punchboard industry to flourish. Once the boards became cheap to manufacture, they flooded the country. Noted gambling author John Scarne estimates that 30 million punchboards were sold in 1910-15.

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RC Hobby :

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RC hobby, which is taking up RC toys as a hobby, can entertain and give you a fun-filled experience. These RC toys are taking the spotlight for a great hobby, not only for kids but also for adults. It's never too late to try one as more and more people are getting into this kind of hobby.

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RC hobby, which is taking up RC toys as a hobby, can entertain and give you a fun-filled experience. These RC toys are taking the spotlight for a great hobby, not only for kids but also for adults. It's never too late to try one as more and more people are getting into this kind of hobby. Amongst the various types of RC toys, RC Helicopter is the most popular nowadays.

With the ongoing of the technological enhancements, flying a RC helicopter is fun and very affordable. With only about $60, you can have your own dream to fly a RC toy. Another benefit of an RC hobby is that these toys do not release harmful fumes than the other helicopter models and types release. Thus, the pilot and the onlookers will always be safe from harmful chemicals. It's always said that it's easier to fly than any other models. Most RC helicopters are ready to use and fly after the purchase; you don't need to assemble anything anymore.

The usual RC helicopter needs at least four controls. One is called the Roll or the Cyclic Pitch, the Elevator control, the Rudder, and the Collective Pitch or Throttle. You can then control the height of the flight, the steadiness of the course, and some experts like to do an acrobatic control with their RC hobby crafts. RC toys are best played in an open field where you can observe their every move and route. However, RC Helicopters are better than RC airplanes because helicopters don't need a runway to fly, you can definitely fly it anywhere, even in your backyard or inside the house.

The care and maintenance of this kind of toy is not as complicated as you think. It is a technical hobby so you also have to learn some technical tips to better care for your RC toy. The battery life is an important thing to know how to stretch the limit. Before charging it again after it drained, let it cool down first for about 15 minutes before hooking it up to charge. In this way, you will help the battery have a break and not overuse it. Before using the toy, make sure that the screws and bolts are secured in the proper places to avoid any unexpected accidents with your RC hobby craft. If something is not right, like the presence of a weird sound that you have not heard before, you have to stop using it and have it checked first with an expert to avoid sudden breakdown of your RC toy. And when keeping the item, put it in a place where it is wide and has enough room for your helicopter to prevent scratching or unwanted pressing on the item.

There are many types of RC helicopters to choose from if you want to buy one. The Mini RC Helicopters are the smallest, inexpensive, and very durable. It's better to start with a smaller helicopter first as you begin to practice to control the RC toy. The Coaxial Helicopters are more complicated to control since it has 4 channels to control. This one is good for those who want to develop a hobby for flying helicopters. If you've already developed a flying skill, then the 3D Helicopter is the one for you, since it can perform a lot of new tricks and acrobatic moves.


Source : EzineArticles

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