| 摘要 |
Security and fixing mechanism, of the spring and pull type, based on a plate provided with orifices in a special configuration, and fixed to the section which is to be secured and wherein a slip bolt is slided through said orifices by means of a slip formed in the pawl, in the upward direction of the section, and keyed into said orifices when the section is in the downward direction, whether it is intentional or unintentional. <IMAGE> |
