Door Handles. Monday , November 20th , 2017 - 05:03:47 AM
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.
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. Depictions of door handles in paintings dating to the first century CE are centrally placed hinged rings. The modern door knocker is a vestige of this style of primitive door handle. Doors were typically secured by bars and brackets to prevent them from being opened by either intent or accident.
While the Storm door handle could be described as an attempt to mix and match the two previous options, it really stands out on its own. The very long back plate is 185mm, over 50mm more than the length of the lever handle (which is 127mm). The handle itself is slightly curved, although not enough to be very noticeable, and is a single length of handle, rather like the Monet. It features the different colour metal on the palm pad, as exhibited by the Nimbus, which makes it an ideal match for a more modern house. The Storm door handle is also available with a lockable back plate which again matches a mortice lock in the same style.
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