DE38998C - Automatic hook lock for double-leaf doors and windows - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 68: Locksmith.

Fatentirt in the German Empire from August 3, 1886.

In the case of double doors to lock rooms, cupboards, etc., one of them has been used until now Wing by means of latches or the like on the cabinet or frame and then the second Wing attached to the former by locks or bolts.

The bolt located on the first wing, over which the second wing engages were either embedded in the wood, or they were on the inner side of the wing appropriate. When the doors were closed, one had to be able to lock them firmly at all achieve both the top and bottom latch in or over the cupboard and could only then lock the second wing and with it the door itself. When opening, of course, the bolts must be moved in the opposite direction.

Instead of the inner latches, springs are often used, in which an on the a wing attached hook engages when squeezing; when opening the wing the spring must be lifted to free the hook. All of these closures are connected with evils of various kinds and are as soon as they are overlooked To push a bolt, etc., a tight locking of the doors is impossible at all.

The present locking device is intended to replace the latch, etc., and eliminates it the associated evils. When the door is closed, the device attached to one wing comes automatically to intervene, while when opening the door this device automatically opens Intervention is set. .... :

In the drawing is:

Fig. Ι a front view of the device,

Fig. 2 is a side view,

Fig. 3 is a section along from in Fig. 1; here the bearing, by means of which the device is attached to one door leaf, can also be seen in section.

Fig. 4 is a top view.

Figures 5 and 6 show the attachment of the device to the top of a door together with bearings and abutments.

7 and 8, however, show the attachment to the lower end of a door.

The main part of the device consists of a double angle lever. The middle part of the same is offset in order to prevent the lever from shifting in the bearing /. On the lower side of / a thin plate ο is attached for better guidance of the lever, which is fastened at the same time as /. ' The curved arm c sits at one end of m , while the arm d, which is equipped with a nose η , is attached to the other end of m. Both arms c and d are at right angles to each other. Arm d is heavier than arm c, and when the door is open the lever will always assume the position indicated in Fig. 6 in dotted lines.

The lever is attached to the inside of one wing / middle / in such a way that the arm c protrudes over f and the nose η, when d is in a horizontal position, engages over the attachment e attached to the cabinet g. When the door is closed, the second wing / ^{1 will} hit arm c , thereby

turn the lever in its bearing and grip the nose η of d over the shoulder or the abutment e. If the second wing / ^l is now closed, a completely solid and secure closure is thus produced. To forget to slide the latch is absolutely impossible.

When attaching the device to the upper end of a door, it is sufficient to fasten a simple angle e or a plate of sufficient strength on the cupboard g; at the lower end, however, an abutment e must be attached, which is either provided with a groove through which the nose extends, or the projection e , as can be seen from FIG. 8, must have a lateral projection over which the nose lies .

Not to protrude ¹ LJM when attaching the device to Zimmerthüren down on the floor to approach e, one can also set the same, that he after opening the door läfst be folded to one side into a recess mounted in Fufsboden.

The doors, windows, etc. provided with this device can only be opened if the wing / ¹ , which therefore engages over the other wing f , is rotated back by arm c either after the lock or the like has been opened.

Claims (1)

Sponsorship claim: A hook lock for double-leaf doors and windows, which is used to replace the previously used sliding bolts, springs and the like, in which the locking of one leaf is effected by the fact that the nose η of the double-angle lever cd automatically grips over the cupboard when the other leaf is closed , while when the same wing is opened, the lever end d sinks down due to its excess weight and thereby automatically detaches itself from the angle e on the cupboard. For this purpose ι sheet of drawings.