Abstract: Method and apparatus for minimizing or eliminating die breakage when performing a drawing operation on an open-sided channel member. A drawing die has an insert portion that includes a discrete element mounted for transverse movement with respect to the drawing direction. During a drawing operation, the discrete element is allowed to move transversely with respect to the remainder of the drawing die in response to variations in the drawing force transmitted to the discrete element through the channel member being drawn.

Abstract: An intrustion-secure mail box is described as being particularly suited for rural and suburban delivery. A pair of vertically offset doors are provided, through the upper of which mail intended for delivery is inserted, and through the lower of which--lockably openable by the user--the delivered mail is retrieved. A "slide" arrangement is incorporated internal of the mail box--both to direct the delivered mail inserted through the upper door towards the lower door opening, and to act as a bar to prevent an unauthorized retrieval by a person trying to gain access by a reaching through the upper door to get at mail acculumations aggregated at the area of the locked lower door.