| 摘要 |
The present invention relates to a safety feature whereby a metal plate, fixed to a material softer than the metal, is provided with increased resistance towards forced removal. This is achieved by a device and a method for securing a metal plate fixed to a frame comprising the steps of; drilling a first hole into the front of the frame substantially perpendicular to said frame in a position aligned with at least one of the screws fixing the plate to the frame, drilling a second hole into the frame either from one side of the frame or from another side of the frame, said second hole being substantially perpendicular to said first hole and being in connection with said first hole, inserting a cylinder shaped nut into the second hole, inserting the distal end of a substantially elongated cylinder shaped bolt into said first hole, bringing the bolt in connection with the cylinder shaped nut, and fastening the plate to the frame with screws passing through the transversal hole thereby bringing said plate in connection with the bolt. The device according to the invention is easily mounted from the front and the side of e.g. a door jamb or a window frame.
|
