Within the housing of the lock we find a number of chambers which align with the holes on the plug. Each key pin is a different height, and this will correspond to the profile of the key. The plug has a number of holes in the top, within each hole there is a small metal cylinder known as a key pin. When the key is turned, the plug will rotate. The key will slide into the plug and follow the groves to ensure a smooth transition. When we look inside the padlock body, we can see the locking mechanism. To unlock the padlock we need to insert the correct key into the key hole at the bottom of the lock body, and rotate the key until it releases the shackle. You’ll feel the internal locking mechanism engage and click into place, the shackle will now be unable to leave the body of the lock. To lock the padlock we simply align the end of the shackle with the hole in the lock body and push these together. These form part of the lock mechanism and we’ll see that part shortly. On the inside surface of the shackle we will find two notches. In the unlocked position, one end of the shackle pops out of the main body allowing this component to rotate freely. When we look at a padlock the most noticeable feature is the U-shaped shackle at the top. But these types of locks, especially the cheap ones, can be unlocked without a key if you know the correct method and once we understand how the lock works we’ll learn how to pick the lock. These are strong mechanical locks which are easy to mass produce and we find them used for everything from keeping our bikes where we left them to symbolising the everlasting love between two people on a bridge, and then throwing the key away to ensure it can’t be undone. Called so because inside are some pins and a barrel which rotates or tumbles over. With the industrial revolution came the mass-produced padlock which eventually settled on a pin tumbler design. They have been around for hundreds of years, ranging in complexity of design by different people and civilisations depending on the technology and manufacturing processes they had available. Padlocks come in many shapes colours and sizes. Scroll to the bottom to watch the YouTube Video The Padlock Padlocks Go to for a free trial and when you’re ready to launch, go to … and add code “ENGINEERINGMINDSET” at checkout to save 10% off your first purchase of a website or domain. With thanks to Squarespace for sponsoring this article. Learn about the standard padlock to understand the main parts, how they work and also how to bypass the mechanical security features to pick the lock.
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