DE527044C - Safety lock inserted into the socket of electric light bulbs with a locking piece lying transversely to the socket axis - Google Patents

Description

In the known locking pieces with a key to secure electric lamps against unauthorized removal of the same from the socket, the disadvantage has been shown that if handled carefully, it is accompanied by the known unpleasant consequences Short circuit in the lamp socket can occur.

The reason for the emergence of the short

To conclude is the too great length of the locking piece, which, inserted next to the center line of the socket, had to reach out of the same in order to stay firmly in place.
In the present improvement, the locking piece is retained, as is the insertable key which can be produced in various shapes, so that the purpose of the original lock, to make it difficult to open the locks by the use of differently shaped keys as in the case of security locks, is preserved. The closure piece is given a shortened shape and also a different cross-section, e.g. B. the shape of a T, and is held inside the lamp socket by two locking hooks or attached to the socket by rivets, etc., while the screwing of the lamp from the socket preventing locking hook is shaped essentially as in the older version. The shortened shape of the fastener prevents the possibility of short circuits.

The object of the invention is shown in the drawing in an example.

Fig. Ι shows the inserted into the socket locking piece with key and the protruding locking hook in view from above;

Fig. 2 shows the same lock with the exposed striker without a key;

Figure 3 is a front view with the keyhole open;

Figure 4 is a top view with the key inserted and pushed back Locking hook;

Fig. S is a side view of the key;

Fig. 6 shows a longitudinal section through the locking piece with the key inserted and the latch that is pushed back and secures the lamp;

Fig. 7 shows a view of the leaf spring influencing the striker;

Fig. 8 is a longitudinal section through the locking piece with the striker protruding;

Fig. 9 is a cross-section through the locking piece without the striker;

Figure 10 is a side view of an Edison socket with a T-shaped opening for insertion of the closure piece;

Fig. II is a top plan view of the Fig Edison socket inserted locking piece with the lid of the socket lifted off; Fig. 12 is a side view of a Swan mount with opening as in Fig. 11;

Figure 13 is a top plan view of the plug inserted into a swan socket as in Fig. 11.

The improved closure piece is a hollow, approximately T-shaped body 1 with each one at 5, 6 or 7 so articulated locking hook 2, 3 or 4 that the locking piece inserted into the socket of the lamp and by opening the locking hooks 2 and 3 (Fig. Ι and 2) can be determined. The closure piece is inserted at introduced key 9, which presses the locking hook into the same. All three Locking hooks inevitably come out and become when the key is pulled out held in their position by the leaf spring 8 shown in Fig. 7. The latch 2, 3.4 are toothed according to the shape of the key, so that they are with a wrong Keys cannot be moved out of their position. By changing the position and shape of these locking hooks and the Key can be set up the locking pieces so that each of the same or one A number of these can only be opened with a specific key. The locking hooks 2, 3 set the locking piece in the socket, while the locking hook 4 the base the lamp used. A simpler shape of the closure piece can be achieved in that the two Lock hooks 2, 3 and the upper part of the.

Closing piece are simply omitted and that the locking piece itself in the Version is riveted or soldered. This makes the hole in the socket a matter of course limited to the key shape and the hook 4 so designed and movable attached that it can be operated by a suitable key.

Claims (3)

Patent claims: 1. Safety lock inserted into the socket of electric light bulbs with a locking piece inserted transversely to the socket axis, characterized in that that the locking hook (2, 3, 4) carrying the locking piece (1) only is attached to one side of the socket wall. 2. Safety lock according to claim i, characterized in that the to be inserted closure piece (1) as a hollow body with a T-shaped cross-section is formed, in which three locking hooks (2, 3, 4) are articulated, of which (2 and 3) hold the locking piece (1) when pulling out the key, while the third locking hook (4) prevents the lamp from being removed from the socket by placing it behind the appropriate The barb of the lamp base engages. 3. Safety lock according to claim ι and 2, characterized in that that the locking piece is only provided with the locking hook (4) which locks the lamp and is permanently installed (riveted or soldered) in the socket. 1 sheet of drawings