Key (lock)

“ Few persons would incur the trouble of using two keys; and besides this, there were not wanting certain defects in the action and reaction of the several parts; for if the clamp-screw were to be left unreleased, the first series of tumblers would be upheld by the second series in such a way that the exact impression of the lengths of the several bits of the key could be obtained through the key-hole while the lock was unlocked or the bolt unshot. ”

“ The key locks chiefly used in English safes have been the ordinary lever lock with 6-8 or 10 levers, Chubb’s “detector,” Hobbs’s “protector” or variants of these. In the Yale lock, which reverts in some degree to the idea of the ancient Egyptian Key locks. lock, America has produced one key lock which has come into almost universal use in that country and is certainly worthy of note. The key of this lock, shown full size at ka in fig. 12, is remarkably small, being stamped from a piece of flat steel and weighing only a small fraction of an ounce. ”

“ To make a really complicated box of wards, and to cut keys which shall accurately fit their sweep, is a matter requiring considerable manual dexterity; and some warded locks are therefore expensive. But even with the best of them, all that it is necessary to do for opening the lock is to take a blank key which will properly fit the keyhole, coat it with wax, and then inserting it in the lock, press it round against the wards, which will cause them to leave an accurate impression of their section on the key. ”

“ We never pretended that it was anything but a common key. It is a common key to unlock a common lock. You remember that evidence, the lock was hanging onto the hasp, showing that they had not a key to unlock it. It does not matter whether it was a common lock or a common key or not. The key that unfastened that lock had blood upon it and it was found in the Carlson cottage, with paint upon it, or what seemed to be paint, of the same color as the paint that was upon the floor. ”

“ Having in the course of their inquiries examined the different existing modes in which locks may be picked, forced, or opened by false keys, the Committee have come to the conclusion that the parautoptic lock cannot be opened by any of the methods now practised, unless by a person in possession of the key by which it was locked, in the exact form of combination in which it was used for the purpose, or in the almost impossible case of the bits being adjusted to the skeleton key by accident in that very form. ”

“ The combination of a time-lock and a combination or key lock, both constructed to be applied on a safe, vault, or other door, so as to rest against the bolt-work, and provided with a lock-bolt or obstruction having an opening or offset, which is automatically brought into and out of coincidence with the tongue of the bolt-work, whereby the bolt-work may be retained in the unlocked position for shutting the door, and prevented from being retracted when locked, until both locks have been unlocked. ”

“ The only elements are the two locks and the bolt-work, no other element being hinted at, even; and the arrangement of said elements is that the locks rest against or connect with bolt-work, and are used independently of each other. To recite in the claim that the 'key-lock is controllable from the outside,' and the 'time-lock upon the inside only,' is entirely unnecessary; for all key or combination locks of safes are controlled only from the outside, and all time-locks, as a matter of course, upon the inside, are automatically unlocked. ”

“ As a matter of fact, it is even now in perfectly good order, except for the damage we have jointly committed with the screw-driver. And now, observe! That lock was shut by another key; if the man that did that is as sharp as I suppose he is, he will have got rid of that key at once. But perhaps he hasn't; and if not, then the man who has that key is the thief. At any rate, the key is the clue we must hunt for. Let us have your clerks in one by one, and look at their keys. Some are out at lunch by this time, probably? ”

“ The puzzle-lock is generally in the form of a padlock, which is opened and closed without the use of a key, and which has certain difficulties thrown in the way of its being opened by any one who is not in the secret of the person who closed it. It is, in fact, one of the locks in which the doctrine of permutation is made to contribute to the means of security. The key to open it is a mnemonic or mental one, instead of one of steel or iron. Two centuries ago, the puzzle-lock attracted far more attention than any other. ”

“ It is true that iron safes have been made for some years in which any number of large bolts are shot by a handle and then locked by a very small key. But in such locks the key must be used in locking, and this leads to certain objections, viz. the key must occasionally at least be confided to some person whose duty it is to lock up the safe after the owner has left the place; there is also the temptation to leave the key in the lock, since it will be wanted in locking up; and thus there is the danger of some dishonest person taking an impression of the key. ”

“ I do not state this circumstance as a point essential or of any importance to the purpose of the lock, but to prove more clearly what I have before observed upon its principle and properties; for if such difficulties occur to a skilled workman, as to render it almost, if not altogether impracticable to form a key when the lock is open to his inspection and its parts accessible to his hand, it pretty clearly demonstrates the impossibility of accomplishing it when no part of the movement can be touched or seen. ”

“ This is the key of 84, Camford Street. The lock is high up on the left-hand side of the door. There is no keyhole. You will see a green spot. Press the key against the spot and it will enter the lock. Push home as far as it will go, then jerk upwards, and the door will open. Don’t try to enter when anyone is looking. Directly you get it, tear off this label and burn it. Then pass the chain about your waist, underneath your dress, and snap the padlock. If you lose the key, or let it go for a moment from your possession, may the gods burn up the marrow in your bones. And they will. ”

“ The bolt-work on different doors is frequently such that the two locks cannot be applied together. The clock-lock in such case may be attached at the most convenient location, as before described. It can also be applied with facility on old safes having the combination or key lock already on, thus securing the advantage of a clock-lock and combination lock without the necessity of removing the old lock, and substituting a new one having a time movement combined directly with the lock. ”

“ But if this ideal excellence was attainable, if the key could receive a form to which neither the vicious nor the ingenious could supply a counterpart, its use must be very limited; for the purchaser of a Lock, placing property under its protection, most undoubtedly guards the key with the same solicitude that he would the property which it secures. ”

“ The unpleasant incident was steps outside and a key in the lock! I was disporting myself on the lid of the trunk at the time. I had barely time to knock out my light and slip down behind it. Luckily it was only another box of sorts; a jewel-case, to be more precise; you shall see the contents in a moment. The Easter exodus has done me even better than I dared to hope. ”

“ Key to Chubb’s lock.
The key is represented in fig. 32. It has six steps, besides a terminal step to act upon the bolt. The height of each step, or the distance to which it extends from the pipe of the key, depends of course on the height to which its corresponding tumbler is to be lifted; and it matters not whether the steps of the key are adjusted to the slots of the tumblers, or the slots to the steps, provided the agreement be brought about. It is simply a matter of manufacturing convenience that the key-steps are cut first and the tumbler-slots afterwards. ”

“ For office work, a small key is desirable, so that cylinder locks are ordinarily employed, as the key for the operation of such locks may be conveniently carried. For hotels, however, a high-grade lever-tumbler lock with round, substantial keys is desirable, because the keys are liable to hard usage, and should not be convenient to carry in the pocket. ”

“ The way in which I put my key in the lock, the place where I always find my matches, the first object which meets my eye when I enter the room, make me feel like jumping out of the window and putting an end to those monotonous events from which we can never escape. ”

“ In fig. 9 we shall be able to illustrate this. Numbers 1, 2, and 3, all appear very different keys, and it is quite true that neither one would open a lock adapted for either of the other two; and yet the very simple arrangement No. 4 would open all three. This No. 4 is called a skeleton-key; and the relation which it bears to the others may be expressed in the form of a proposition thus: at any point where there is solid metal in all the keys, there must (or may) be solid metal in the corresponding part of the skeleton-key ”

“ The numerous cases that have occurred of attempts to open locks by counterfeit keys, such as the remarkable instance previously referred to, show that even with the most practised hands it is next to impossible to make from a wax impression a key that will serve for opening a good lock the very first time it is tried ”

“ The lock and key of this are in themselves a marvel, for the little triangle screwed key weighs no more than a shilling, and yet it bolts and unbolts an hundred bolts through fifty staples round about the chest, and as many more from both sides and ends, and at the self-same time shall fasten it to a place beyond a man's natural strength to take it away. ”

“ These are very good little padlocks, with an excellent lever action, 'dogged against detent,' as the technical phrase goes; so that only the key properly made for each lock will open it. They are so good, indeed, as locks, that it would be a waste of time to try picking them, when, because of their small size, it is so very easy to break them apart, just as you have done yourself, and just as I could probably have done in half the time, having had rather more experience. Now that is what has been done with your lock by the person who has your bonds. ”

“ In some instances, for additional security and for special work, the corrugations in the keyway are changed in shape so that the manufacturers’ regular type of key will not enter the keyway, or plug, thus allowing no chance for the regular type of key to operate the lock. ”

“ When a person who was outside wished to enter, it was necessary for him to insert the key in a little hole and to raise the bolt; and in time this species of fastening was improved by the insertion of the bolt in an iron frame or rim permanently attached to the door by a chain, and fastening the door by the insertion of the hasp, through the eye of which was forced the bolt inside the lock by applying the key. ”

“ Snuggers did you leave the door unlocked?"
"No, sir, I couldn't get the key in the lock. Here it is." And the general utility man proiduced it.
"Ah! here is a key on the inside. What can this mean?" ”

“ No key would go in without a tremendous lot of shaking and noisy rattling, and you always had to have your key with you, for if you did not lock your door on leaving your room there was nothing to prevent its swinging open; and if you were inside you must rise and unbolt it to admit each person, and to bolt it behind him for the same reason. ”

“ Without machinery they could not be made at all, or they would be sold at a price which would prevent them being commonly used. Some of the finer articles, such as a Bramah lock, or a Chubb's lock, could not be made at all, unless machinery had been called in to produce that wonderful accuracy, through which no one of a hundred thousand locks and keys shall be exactly like another lock and key. ”

“ Hewitt's client produced a screw-driver from a drawer, and in a very few moments the interior of the little padlock lay uncovered. Hewitt examined the lock attentively for some few minutes, trying the key several times against the levers. Then he stood up and said—
"Mr. Bell, you have made a mistake. This is not your lock at all!"
"Not my lock!" exclaimed the broker. "What do you mean? I tell you it is the lock of that box, and I broke it open myself!"
"Yes," answered Hewitt calmly, "it was on that box, and you broke it open yourself; but all the same it is not your lock. Let me explain. ”

“ More modern, but considered now to be old-fashioned, are the letter lock and warded lock; later still are the patent locks of Barron, Bramah, Chubb, and others. It is not necessary to describe the variations in all these; it may suffice to say that the most trustworthy are those with levers and tumblers, and protected in other ways from false keys and picks. One chief point of security consists in a lock being so unlike any other that no key but its own will open it ”

“ By another contrivance it is rendered impracticable to move a pick or picks round in the lock more than a small distance, unless the tumblers could previously be all lifted to their right positions, which can only be done by the right key. ”

“ The chief parts of a lock are: the bolt, its essential feature, the selvage, the plate which appears at the edge of the door or drawer, the box, which contains the mechanism including the tumbler, ward, spring, etc., the key-pin, into or around which the key is inserted, the strike, the plate attached opposite the selvage, (often left out as in drawer-locks, but essential in hook-bolt locks, and self-locking locks,) and the escutcheon, the plate around the keyhole.
Locks may be classified: (1) According to their uses, of which there are two types. (a) , Fig. ”