By pulling the string the homeowner could lock the door from the outside.
Materials used in door handle.
Egg shaped door knobs are the easiest for most people to use.
While brass remains the most common type of metal used for door knobs stainless steel and plastic have grown increasingly popular and cheaper as a material choice and that may be bad news for cutting back on the spread of germs.
Examples include brass white porcelain brown mineral cut glass wood and victorian bronze.
A combination of several materials is sometimes used but the three basic material choices for exterior doors are wood steel and fiberglass.
Which one is best depends on your specific needs and.
It can be plain white cream or black or combined with gold lines or brass chrome and bronze fittings.
Although not as popular porcelain door handles are available in many different colours.
This used a latchstring to pull a bolt through brackets in the door.
Door handles can be made out of a wide variety of materials.
The key itself was a sickle shaped piece of metal from two to three feet long.
You can go as basic as a flat door or as ornate as panel doors with detailed carvings.
Then the string was stuffed back through the keyhole.
Doorknobs have been made of many materials including wood ceramic glass plastic and different types of metal.
The greeks developed a simple door lock by about 700 b c.
The average doorknob is 2 25 in 5 715 cm in diameter.
As a material for door handles stainless steel is thus best applied to heavily used doors particularly those in public buildings such as the public authorities hospitals on ships in motorway.
Porcelain is mainly used for internal door knobs and is a very practical and low maintenance material.
Wood doors are primarily used for interior door applications.
Brass is one of the most popular materials because of its excellent resistance to rust.