Pad Lock is the simplest of all locks discovered so far and its usage dates back to the 17th century. It is a simple type of detachable lock that has a hinged or sliding fastener, also known as shackle. A shackle is basically a U-shaped bar of a pad lock one end of which is pivoted or sliding and the other end of it can be released to pass through a ring or staple on a door. They are usually provided with keys to open and close them. However, there are some modern padlocks that do not require a key to be closed. They are primarily meant for security purposes.

During the Victorian era, giant pad locks were made by locksmiths. Even today, various sizes are available for padlocks depending on their usage.

Materials used in Padlocks

Since pad locks are primarily meant for security, they need to be made of strong and durable materials. Usually metals and metal alloys are used for making padlocks. Some of the common materials include:

• Brass
• Steel
• Iron

Variety of Pad Locks

There is a variety of pad lock known as combination padlock that does not require any key. These locks open when its wheels are lined up correctly to display the correct combination. These locks can be usually re-programmed by holding the shackle in a special position while turning the wheels. The turning of wheels in turn allows the numbers to be changed whenever required.

Uses of Padlocks

Pad locks can be used for many different purposes. They can be used in home for locking doors, cupboards, etc. Again padlocks are used in schools, workplaces, etc. for the security of lockers. The small sized padlocks can be attached to suitcases and travel bags while traveling to prevent casual thieves and other members from opening the case. Pad lock also finds application in commercial and industrial sites, especially for outdoor areas as a part of security measure.