Door knobs where invented by Osbourn Dorsey in 1878 with the filing of his patent. These items are a round handle that allows a person to open a door. The common construction of this product has a bolt or spindle continuously through that rests exactly above a cylinder, where the spindle is connected. Revolving the mechanism forces the cylinder in the angle of the turn. Door Hardware Toronto has the right fit, style, function, and material for your space.
In the middle, along the side of the door knob resides the latch bolt which is attached to the cylinder. The latch bolt pokes into a slot chiseled out of the door frame. This prohibits the door from moving open. Usually a spring element causes the latch to go back to its original outward position. Escutcheon plates cover the gap where the key enters the lock body. Door knobs are manufactured out of assorted materials. Some of these materials include brass, glass, wood, bronze, and many more. Each material can be finished differential. Examples of the differences are polished, hammered, matte, antique, and several other methods.
During the fabrication process the style of the unit is determined. This determination influences the shape of the door knob. The most popular shape is round. Other shapes include rectangle, oval, square, and egg. There are no limitations to the door shape or style. Styles can range from traditional to modern to rustic and what a designer can imagine. The typical door knob is 2.25 inches (5.715 centimeters) in across. The main parts of this piece are rose, shank, spindle, and latch.
The design of door hardware is modeled on image, cost, and accessibility. Designers painstakingly examine appearance, size, shape, touch, and ease of use of each detail. The design process begins with a two-dimensional form. Features of a door knob include smooth edges, grip, shape, and shaft length. A three dimensional sample is made to aid in fabrication.
The raw materials involved in this product are metal. The most common is brass. Brass or other materials come in rod or billet style. A machine cuts the needed length. The raw material used in door knobs must meet the standard guidelines.
The manufacturing process revolves around 5 steps. The first step is forging. Forging heats the metal until it is softened. Then the softened metal is poured into a model. Then the door knob is expelled from the mold, cooled, trimmed, strengthened, and cleaned. Next, the surface is finished by coining, milling, drilling, and tapping procedures. The coating on the piece can be organic or inorganic. That coating prevents rust and corrosion for the lifetime of the piece. Quality materials safeguard the piece lasting a lifetime.
Door knobs go through quality control testing and must meet the standards. Building codes paly a large part in this area. Little waste is created since forging is already in the desired shape. Forging also spawns uniformity for the product. The demand for mechanical hardware will never disappear, but electronic hardware is becoming more popular. Door knobs continue to be a major part in residential and commercial buildings. For more information, please visit Door Hardware Toronto.