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The commercial lever lock mechanism dates back to the early 19th century Chubb lock (and, indeed, to well before). A detailed introduction to locks is well beyond the scope of this document; we assume here that you already understand, or have access to, the basic principles. Once you've mastered the two pin lock and can distinguish reliably among pin states, you should have little trouble with a three pin lock. The design is based on the late 18th century British Bramah lock (still in production and use today). The modern pin tumbler lock is quite simple, dating back to ancient Egypt but not commercially mass-produced until the middle of the 19th century. A common door lock mechanism in Europe uses a standardized "European profile" lock module. Around the circumference of the plug is a shell, which is fixed to the door or container. It is always best to practice with your lock mounted to a door or wood platform, as they are here, or at least fixed in a vice. However, because the precision with which locks can be manufactured is limited by physical processes, materials, economics, and usability considerations, exploitable weaknesses almost always exist in practice. The numbers on the front of the practice locks indicate the keying codes, from the front-most pin stack to the rear-most.

See Figure 2. The plug will be blocked from rotating if any pin stack is lifted either not far enough (with the cut still in the plug below the shear line) or too far (with the cut pushed above the shear line and into the shell); to rotate, all pin stacks must have a cut at the shear line. Pockets: Carom billiards tables do not have pockets at all, as the game does not involve potting balls but rather focuses on hitting object balls in a specific manner. Straight pool, also known as 14.1 continuous, is a game where players must pocket a set number of balls to reach a predetermined score. In 9-ball, players must pocket the balls in numerical order, what is billiards with the 9-ball serving as the game-winning ball. Eight Ball is a call shot game played with a cue ball and fifteen object balls, numbered 1 through 15. One player must pocket balls of the group numbered 1 through 7 (solid colors), while the other player has 9 thru 15 (stripes).

In billiards, you must bounce the cue ball off the other two balls to score points, which are referred to as counts. Many of the principles can be applied to other keyed lock types, although sometimes the techniques and tools must be adapted. The lock will never pick open in this state; you must release torque and start over. Some locks will open both clockwise and counterclockwise, but many will only open when turned a particular way, depending on the configuration of the underlying locking mechanism. Whether you’re just starting out or looking to take your game to new heights, a solid grasp of the rules, game variations, and strategies will set you on the path to success. 1. What's the best way to learn advanced strategies in billiards? Additionally, developing a deep understanding of game variations and their unique strategies will elevate your game to the next level. As you lift the pin stack with torque applied, eventually its cut will reach the shear line, allowing the plug to turn; the top pin will then be completely trapped in the shell, while the bottom pin stays in the plug, no longer held down by spring pressure. The plug can rotate freely only if the key lifts every pin stack's cut to align at the border between the plug and shell.

By honing your skills and knowledge of the game, you can enjoy the thrill and excitement of billiards to the fullest. 1. Can I play billiards competitively? Basic Play Each turn is called a ‘break’ and consists of a series of strikes of the cue ball that come to an end when a player makes a non-scoring strike or a foul stroke. You need 15 balls, but some people play with just nine. Scoring is achieved by ‘potting’ balls, by ‘cannons’, and by going ‘in off’. Scoring a carom also entitles the player to another shot, and his turn, or inning, continues until he misses, when it becomes his opponent’s turn. The player pocketed the cue ball. THE PLAYER POCKETING HIS GROUP FIRST AND THEN LEGALLY POCKETING THE 8-BALL WINS THE GAME. What are the 8-ball pool rules? What are normal pool rules? Pool involves a table with six pockets. What is the difference between pool and billiards? Additionally, practicing basic shots and learning the fundamentals of ball control will set a strong foundation for your billiards journey.