Abstract: A bandsaw machine which has a sawhead assembly in which a flexible endless bandsaw blade is trained around a pair of bandsaw blade wheels to cut a workpiece, with the blade being guided by a guide arm, includes a guide member on the guide arm, for holding the bandsaw blade in a vertical orientation by pushing the bandsaw blade from both sides. A rolling member is mounted on the sawhead assembly and is free to push a side surface of the bandsaw blade with a predetermined force so as to prevent vibration of the blade.

Abstract: The present invention relates to shearing machine in which the upper shearing blade can be easily adjusted and positioned. The upper blade is held on a pivotal plate member which is pivotally held on a ram by means of a hinge to be rotated to adjust of the position of the upper blades. In addition, a hold down member is provided for holding a work-sheet. The hold down member is arranged to be urged by a toggle joint to hold the work-sheet at a reduced speed with an increased force after coming into contact with the work-sheet. A scrap removal member is also included in the shearing machine such that scraps can be easily removed without mingling them with the finished sheets. The scrap removal member removes scrap without idle time between feeding the work-sheets to be sheared. The shearing machine is so arranged that scraps are taken away directly to a scrap box as soon as the work-sheet has been complete sheared into its finished product.

Abstract: A turret punch press having a pair of upper and lower turrets ono which a plurality of pairs of upper and lower punching tools are mounted to punch a variety of holes in sheet materials is disclosed. Each of the upper and lower turrets is synchronously rotatable such that the upper and lower punching tools may be synchronously rotated or indexed in order to punch holes of the same size and shape, but different orientation, in the sheet material.

Abstract: A bandsaw blade guiding apparatus has a support arm forming a cavity through which the blade moves. The cavity contains a resiliently supported anti-friction member which has a flat surface contacting the back edge of the blade during a cutting operation.

Abstract: The present invention relates to a notching machine which comprises a frame, a table mounted on the frame, a device for holding shearing tools on the table, a ram member vertically movably mounted on the frame, an upper shearing tool provided with the ram member, and a lower shearing tool cooperating with the upper shearing tool. The lower shearing tool is divided into a plurality of pieces. The notching machine also comprises a screw arrangement for adjustably holding the lower shearing tool in the device for holding the shearing tools. The adjustable holding of the lower shearing tool is done in such a manner that the horizontal clearance between the upper and lower shearing tools may be changed in lateral, forward and backward directions independently.

Abstract: This disclosure relates to a method and apparatus for changing dies in a press and for storing dies not in use in a storage rack associated with the press. The press includes a work table disposed beneath the ram of the press and having means for moving dies from a "waiting position" at the left of the ram to a "working position" beneath the ram and then to a "retiring position" to the right of the ram. A die returning conveyor returns dies from the "retiring position" to a die transferring carriage disposed behind the ram from where they are automatically transferred to an adjacent storage rack. When a particular die is desired, it is automatically removed from the storage rack by the die transferring carriage, and then conveyed to the "waiting position" by means of a die advancing conveyor.

Abstract: Apparatus for making folds or bends of adjustable length in sheet metal. The apparatus includes a retractable chain-like die which can be shortened or lengthened so as to adjust the operative length of the die.

Abstract: This disclosure relates to an indexing feed mechanism for a cutting machine comprising an indexing vise for gripping a workpiece and moving it forward into a cutting position. The mechanism includes a lead screw interengaged with complementary means formed on a stopper means adapted to limit the rearward extent of the stroke of the indexing vise. Rotation of said screw will, therefore, cause translation of said stopper means thereby varying the rearward limit of travel of the indexing vise during its stroke. The lead screw extends from a rotatable shaft and means located at the operating station of the cutting machine are provided for rotating the shaft. The shaft is operably connected to a digital indicator which indicates in digital numerals the predetermined stroke of the indexing vise as a function of the angular position of the shaft.

Abstract: The present invention is directed to a construction of a horizontal band sawing machine which is particularly suited for the cutting of materials having at least one web portion and a flange portion, such as L-shaped steel sections.In a horizontal band sawing machine including a housing which is pivotally connected at one end thereof, the construction achieves a structural advantage by involving a plurality of portions where the housing is pivotally connected while a stock vice mechanism is provided to the construction which is capable of holding such a steel material as L-shaped steel not only from the left and right sides thereof, but also from above and below.