Door Handles. Saturday , September 29th , 2018 - 21:13:03 PM
The entrance door handles are usually used for the doors furniture that lead to the outside of the house. The knobs come with a locking mechanism for security. The privacy knob locks will usually not come with a cylinder locking system. The security features are not major since the main aim of the door furniture is to enable privacy as opposed to security. Closet door knobs on the other hand do not have a locking system. They are used on hall ways and for closets door furniture. The knobs are used for pulling and returning the door. Dummy handles are used more for aesthetic beauty as opposed to functionality. Such handles are placed on electric doors, ball catch doors or spin doors.
Besides security, it is important to consider the functionality of the door furniture handle. If the door is made of hardwood, it should have a handle mechanism that makes it easy to open and close the door. Furthermore, handles in common passage doors need to be durable to handle the continuous handling. You can then use the less durable but more beautiful handles for the inner doors that may not require a lot of opening and closing. A major concern with door knobs especially for public doors is the hygiene. People including medical practitioners have argued that handles do spread contagious diseases. By using materials like brass, copper and silver, you reduce the infection rate since these metals are poisonous to germs.
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. Over time, large crossbars used to secure a door were supplanted by sliding bars, operated by a handle secured to the bar and projecting through a slot in the door, or as a pivoting bar - often called a latch - that could be dropped into a matching slot on the door jamb. In Colonial America, the operating mechanism for a small pivoting bar was a latch string threaded through a hole in the door near the handle. There are - probably apocryphal - accounts and references implying that this mechanism was a workaround for heavy taxes and a crown edict mandating the colonists could only use door latches or locks imported from England. About the middle of the 18th century, handles and locks were integrated into a single unit, the earliest known examples being levers that both operated the latch and served as a pull to open the door.
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