DE433233C - lock - Google Patents

Description

The invention relates to an improvement on that described by patent 4,25465 Lock. In this lock, in which the locking springs, behind which the noses of one to be pushed into the lock by hand Gripping latches, of different lengths, requires the manufacture of the knives, those for the simultaneous punching out of those connected to one another at their feet Lock springs are used very carefully. As the material for the locking springs, too if these are to be hardened afterwards, of higher natural strength must be, the punching knives soon become blunt; but their renewal arises expensive.

The production of the bar also turns out to be, even if it is done with the help of the forging press takes place, expensive, on the one hand because of the accuracy required for the press die, on the other hand because of their often required rework or renewal.

In order to be able to do so without deviating from the property protected by the main patent specification- j

possibility of the lock to simplify its manufacture and to make it cheaper, the free ends of all or at least two immediately adjacent locking springs are placed in a vertical plane, which forms an angle with a vertical longitudinal plane through the group of locking springs, which deviates ^{significantly from 90 0} .

The manufacture of the knife used to cut out the locking springs and the die Xasen of the bolt-producing punch of the forging press now becomes essential simpler, so the lock is better suited for mass production than that through that Principally protected. The latter, on the other hand, is more suitable if one is special A high degree of security is required and the price is only a secondary consideration comes.

The new lock contains further improvements that increase its security level, which are described below.

The drawing illustrates three exemplary embodiments of the lock.

Fig. Ι is a vertical longitudinal section along line AB in Fig. 3 and

Fig. 2 is an end view of the lock in direction I (Fig. 1).

Fig. 3 is a horizontal section along the line CD in Fig. 1.

Fig. 4 shows the bolt of the lock from below, and

Fig. 5 shows it from the side.

FIG. 6 is an end view of the latch looking in the same direction as FIG.

Fig. 7 is a cross section
Key.

through the

Claims (4)

43S233 Figure 8 is a top view of the key with the key unscrewed from its housing is. Fig. 9 is a longitudinal section through the lock after the key has been inserted. Fig.io shows the lock partly in section, partly in view in connection with a safety chain. Fig. 11 is a horizontal section along the line CD of Fig. Ι through the front part of a modified embodiment of the lock after the bolt has been inserted. On the base plate b of the lock, two cheeks b ^{1 are} attached, which ₄ engage in the upper part of the lock, which is U-shaped in cross-section. The parts α and b and a and b ¹ are z. B. firmly connected to each other by rivets. The locking springs d ¹ are, as Fig. 1 ao and 3 show, of different lengths, and their free ends are at the same height. The grooves c are cut into an upturned flap of the base plate b. On the base plate b , the plate d is attached, with which the locking springs d ¹ produced by punching consist of one piece. The free ends i of the locking springs d ¹ all lie in one or more planes which are perpendicular to the base plate b of the housing and which form an angle with a perpendicular longitudinal plane of the housing which deviates significantly from 90 °. In the embodiment according to FIGS. 1 to 10, the end faces i all lie in only one plane, while in FIG. 11 they lie in two planes forming an angle with one another. As Fig. 11 shows, these surfaces form different angles with the longitudinal median plane of the lock; this increases the difficulty of producing a duplicate key. As FIGS. 4 and 11 show, the surfaces k ^{1 of} the bolts, behind which the free ends i of the locking springs engage, are laid parallel to the end surfaces of these ends. The bolt k is, as in the main patent, provided with lugs k ² (Fig. 6) which, when the bolt is pushed into the lock housing, fit into the cutouts c. When it is pushed in, the bolt rests with surfaces u on guide lugs f (Fig. 2), and at the same time its back surface rests against the inner back surface of the housing part α . When the bolt is fully pushed in so that the locking springs d ¹ grip behind its surface or surfaces k ¹ , it rests at the front on the transverse strip v attached to the plate b. The latch is therefore held completely securely at both the front and rear ends. The rivet e and a cutout in the housing a, in which the fork f of the bolt engages, prevent the latter from being pushed too far into the lock housing. When the bolt is fully inserted, there remains a wave-shaped gap between the lugs k ² and cutouts c , into which the key (Figs. 7 and 8) can be inserted. The depth of these waves is a multiple of the width of the gap, so that, since the bolt itself is prevented from moving perpendicular to its longitudinal direction, only a key can be inserted into the gap, the cross-section of which corresponds very closely to the wave shape of the slot and for the production of which special care is necessary. Even with a lock of the type described, the front movement of the key must coincide well with the position of the front edges i of the locking springs, because otherwise not all locking lugs are brought out of the area of the locking surface or surfaces k ^{1 of} the bolt when the key is inserted and therefore the bolt cannot be pulled out of the lock either. A chain or wire rope is used to connect the lock housing to the bolt. Patent- ι. Lock according to Patent 425 465 characterized in that the ends (ϊ) of two or more immediately adjacent befindlicher locking springs (d ¹⁾ (d ³⁾ at a 90 ⁰ angle deviating to the longitudinal direction of the springs are chamfered and lie in a common plane. 2. Lock with a plurality of locking springs (d ¹ ), characterized in that 10c the ends (i) of the springs are beveled in groups at different angles to the longitudinal direction of the lock. 3. Lock according to claim 1, characterized in that the two longitudinal edges (u) of the bolt when inserted into the lock slide on guide lugs (i) which allow the back surface of the bolt in a small distance from the opposite surface of the only allowing it to move easily Lock housing received. 4. Lock according to claim 3, characterized in that the bolt according to his Pushing into the lock is also supported at its front end. 1 sheet of drawings.