Fauna Door Handles September 23rd, 2017 - 05:25:12
As door handles easily catch germs and bacteria because of the variety of individual hands that touch them in the course of a day, it is important to consider the materials used. It is believed that certain materials like brass, copper and silver discourage the growth of bacteria and germs through some kind of electro-chemical effect; while other materials like aluminum, stainless steel, glass and porcelain do not have the same action. However, this belief has remained just that... a belief: and studies have not been extensive enough to confirm or disprove this possible effect, except in the case of silver. Hospitals in particular are experimenting with handle materials as they continue their fight against infectious disease within their wards.
There are two types of handles, when it comes to general use: external or outdoor handles which are utilized on all main entrances to the home, be it front door, back door, side door or service door; and internal handles which are used for the doors inside the house such as bedroom doors and toilet doors. One of the most popular broad types of external door handles is the lever type, which is commonly used in European homes. External latches are normally bigger as they frequently come with key-in locks for security, and are called lever lock handles. Indoor handles (or lever latch handles) are smaller, as they come without locks, and key-in locks are normally installed separately on the door. There are also external handles with combined door knockers, a very practical alternative when your electric door buzzer is out of order.
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.