Abstract: A method of manufacturing a door channel is provided. The door channel is provided in a space defined between an inner panel and an outer panel of a vehicle door and has an outside wall and a connection wall connected to the outside wall. The method includes: (a) disposing the door channel in a die; and (b) forming a cut portion in a comer portion of the door channel by punching the comer portion by a punch. The cut portion includes: a first cut portion formed in a comer portion of the outside wall; and a second cut portion formed in a corner portion of the connection wall and communicating with the first cut portion. By the first cut portion, a first cut surface and a second cut surface facing each other are formed on the outside wall. In the step (b), the first cut portion and the second cut portion are formed by a single punching.

Abstract: A list cutting machine for producing mitered frame list members an angular cutter head is used for providing a V-shaped overcutting of a supply frame list by two knives, which abut each other at the middle of the cutter head and project therefrom inclined both rearwardly and downwardly. Practice has shown that the innermost halves of the knives are subjected to wear, much more than the outer halves, but the knives cannot normally be turned for increased durability. However, a lifetime-increasing turning is possible when both of the knives are similarly shaped at both ends and are remounted mutually interchanged.

Abstract: In a notching machine using a blade assembly of upper and lower knives mounted respectively on a vertically moving ram and a machine table and each comprising two individual blades forming with their cutting edges a coinciding vertex angle which may be changed by turning the blades relative to each other around a vertical axis of rotation that extends in parallel with the ram near the noses of the knives, a third blade component is provided at least for the upper knife for forming its nose portion with a unitary cutting edge that complements the cutting edges of the two other blades of the upper knife for confining its vertex angle.

Abstract: A drop feed mitering machine includes a work table positioned in a near vertical orientation, a cutting throat running perpendicularly through the machine and a drop feed guide mounted in the region of the cutting throat for guiding a length of molding stock over the cutting throat in a simple gravity assisted drop feed operation. A cutter block is actuated from the front of the machine to sever the molding section positioned over the cutting throat and a front removable scrap bin is provided for removing scraps produced by the cutter block during mitering operations. A feed stop positioned below the feed guide is adjusted to determine the length of the molding piece to be cut. The drop feed machine of the invention can be operated in a confined space because the horizontal feed operations and the horizontally extending feed structures of conventional mitering machines are eliminated.

Abstract: The invention relates to corner shears for cutting out obtuse-angled to acute-angled corners from sheet metal by means of upper and lower knives (41, 40) which interact with one another in the manner of scissors and which, to form an angular cutting edge, each consists of two knives placed against one another in a V-shaped manner and supported on knife carriers (52, 53, 19,20) pivotable about a vertical axis A, the pivot axis (A) passing respectively through the cutting corner and means being provided for adjusting the angle .alpha. between the cutting edges, each upper-knife carrier (52, 53) being connected positively, without the shear stroke being impeded, to the corresponding lower-knife carrier (19, 20) via an engagement piece (72) fastened to the upper-knife or lower-knife carrier.

Abstract: A new and unique workpiece locating device for a corner shear machine which serves for determining a required position prior to starting a shearing operation when it is to be conducted at a corner or on one side of a workpiece in the form of square or rectangular sheet material. The workpiece locating device includes a pair of symmetrically located grooves extending in a V-shaped form relative to a center line extending through the center of dies across a table and a pair of rotary stoppers displaceably mounted on said grooves so as to slide to and fro therealong. The workpiece abutment edge of the respective stoppers is adjustable within an extent of an angle of 45 degrees in both the rotational directions relative to a plane extending at a right angle to the cutting edge of the dies. Measuring scales for both corner shearing and side shearing are fixedly mounted on the table in the vicinity of the grooves and in parallel to the latter.

Abstract: A measuring attachment for a standard miter chopper used in mitering rabbeted picture frame molding employs two arm members one of which can be adjusted in reference to a fixed scale on the front rail for measuring off a desired length of rabbeted molding and the other of which can be located so as to bring the leading inside edge of a previously mitered molding rabbet to an appropriate temporarily fixed position corresponding to the desired length to be chopped.