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Alleffra Searlait Garage Door December 09, 2017 04:25:57
In 1912 an architect created "a new type of outbuilding". The garage which comes from the French word garer- to shelter or protect was invented. The first garage door was essentially a barn door. It was a double door attached to the garage with strap hinges that opened outward. They had the appearance of a basic shed and were subjected to heavy wear and tear. The hinges got rusty and squeaked and the screws would bend and eventually fall out. Snow made it difficult to open and close the doors as well.
In the past the biggest concern with operating an overhead garage door was the potential risks associated with the springs used for balancing the door weight. Pre mid 1960 s garage door installations typically relied upon a pair of stretched (tensioned) springs to assist the operation of the garage door pivoting hinges. These springs became loaded (tensioned) as the door was moved into the closed position. Unloading (releasing) of the stored spring energy occurred as the door was opened to the horizontal overhead position. One of the most dangerous aspects of these spring systems was that after a period of time often without any maintenance or inspection the points of attachment of these springs would rust or become weak. This weakening of the springs or points of attachment would often lead to an inadvertent explosive failure flinging the broken spring components across the garage embedding the spring or steel components into the garage walls cars or other items in the path of travel. Unfortunately sometimes people were in the path of travel of these explosive occurrences. As these springs failed as an attempted safeguard some manufacturers devised a "caging" system for the springs. These cages were retrofitted onto the stretched springs in an attempt to capture the parts that would release if a failure occurred. While these caging devices were helpful they were not completely effective. Some of these spring devices are still in use today. Whenever this condition exists or the quality of garage components are questionable a qualified professional service technician should be consulted.