Door Handles. Monday , October 01st , 2018 - 15:20:31 PM
When you consider that some 120 million doorways exist in the United States alone and another two million are installed each year, you can only imagine the vast number of door knobs. Going back in history, doors were initially made from textiles and animal hides. However, during the ancient Mesopotamia and Egyptian era, wooden doors were developed. Soon, materials for making doors expanded to include stone, glass, metal, and even paper. Doors throughout history have also changed regarding functionality. For instance, we still find doors of all types, those that roll, slide, swing, and fold. Of course, for doors to function, hardware is required to include door handles. Just as with doors, handles have a long history although these were first manufactured during the mid-19th century in America. The first handle was shaped like an egg and today, they are still found in many homes, especially older homes. Interestingly, because of the way this type of door handle is grasped, it has proved to be the easiest to open.
Door handle is an ambiguous term, and includes door latches, bars, and knobs. Depending on the geographical location and its place in time, they vary in design, form and materials. The only constant is its function: an attachment used to open or close a door. The earliest doors extant are approximately 5000 years old. Door handles, as devices to manipulate a gateway, became a necessity shortly after the invention of the pivoting mechanism. To most, pivots are simply known as hinges, however, there are nearly as many hinge designs and configurations as there are handles. The simplest handle is a pull - or push - projection on the side opposite the hinge. The placement of the handle is generally where it will provide an optimal mechanical advantage; most doors operating as second class levers. Doors with centre pulls or rings, or a pivot point in a location other than one edge of the door, use first or third class lever principles.
When it comes to choosing a door handle you may think a door handle is just that, right? Well that is one train of thought but it is important to make sure that you buy the right one for the right job for a variety of reasons. The first thing to think about is where is it going to be fitted, and I know the obvious answer is a door! But there is a little more to it than that, such as where is the door located, how much "Traffic" comes through it, and what type of traffic it is (In terms of people) to name but a few questions.
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