The comb-shaped master key is designed and modified according to the advantages of inheriting the first-generation hook-shaped master key (the first-generation hook-shaped master key is close to being eliminated, and 90% of the modern locks cannot be opened). Invented in the early seventies. There are still locksmiths using this comb-shaped master key, and many locks can be opened with this comb-shaped master key. The principle of unlocking is to use the comb-shaped universal key to push all the marbles of the lock core into the bullet hole in the lock body, so that no lock on the lock core can lock the lock lock body and the lock core to form a separated state, and the lock core is locked. It can rotate freely and open the lock. This unlocking principle is not only used for comb-shaped master keys, but also for soap unlocking, (also known as partial door unlocking) mud unlocking, flashing cylinder unlocking, grease gun unlocking paper towel unlocking, toilet paper unlocking, chewing gum unlocking, grass paper Unlocking, expansion method unlocking, cotton yarn unlocking, match unlocking, lime unlocking, etc. More than ten kinds of unlocking methods. The following describes how the process of making such a comb-shaped master key and the method and scope of use. The steel used in the manufacture of the comb-shaped master key is preferably made of a stainless steel ruler, or it can be made of a Spring clock on an old clock or a steel saw blade, but it needs to be made with a steel saw blade. Steel saw blade burned with red 
Fire (break the saw blade into a length of about 12 cm and put it into a fire and burn it to a reddish color, then set it aside to let it cool naturally.) After the steel saw blade is annealed, it is not easy to break, easy to smash, stainless steel ruler and hacksaw blade, The spring on the old clock is a thin steel that can be easily inserted into the keyhole and is not limited by the ribs in the keyhole. The second step is to remove a lock, take out the marbles and springs , align the hacksaw or stainless steel ruler with the marble hole of the lock, and use the narrowest side of the enamel to pick up the saw blade. The corresponding one for each bullet hole. The saw blade is twisted into a tooth, and the tooth on the saw blade corresponding to the distance between each two bullet holes is slightly smaller than the diameter of the marble hole, so that it is loose after inserting the marble hole. , but the width of the tooth can not be less than two-thirds of the hole of the marble. The height of the tooth is: one tooth hole corresponding to each tooth, so that all the teeth are inserted into all the holes of the marble, just pressing the lock core, if there is a higher part All are smashed, so that the upper end of the convex tooth is level with the outer opening of the lock pinhole, which is not bad. Finally, the front end of the portion of the hand is taken to the first tooth to form a concave with a small finger width, and the depth is flatter than the concave tooth at the front, and is folded into a large concave. When unlocking with a comb-shaped master key, simply insert the comb-shaped master key pair into the keyhole of the lock core and align the first tooth of the comb shape with the first marble ball of the lock core, the comb-shaped master key The teeth are naturally aligned with the corresponding marbles of all the bullet holes, and then the force is pressed down slightly, and the teeth of the comb-shaped master key are pressed against the contact surface of the lock body and the lock core. In this way, all the first marbles in the lock pinhole (that is, the first one we can see from the lock) are all compressed into the bullet hole of the lock body, forming the first grain of the lock. The marbles and the second marble are all compressed in the bullet holes of the lock body. The tooth of the comb-shaped master key replaces all the first marbles of the lock, and the original first marble loses its length and length (there is no need to consider the height of the tooth shape of the comb-shaped master key). The spring of the bullet hole in the lock body is more than doubled when the original key is inserted into the keyhole, forming a state in which the lock body and the lock core are separated, and there is no separation of the lock body and the lock core by the marble. After that, turn the comb-shaped master key clockwise and the lock can be opened. Comb-shaped master key used for: to be divided into multiple toothed comb-shaped master key, generally divided into six tooth: small three teeth, used for drawer, cabinet locks, bedside cabinet locks, file cabinet lock small padlock fourth , the third lock, etc.
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