Abstract: A letoff truck having wheels for rolling the truck to and from a bias cutter feeder is releasably connected to the feeder for movement of the truck with the feeder during angular adjustment of the feeder for a desired bias angle setting. The truck is also mounted for transverse movement relative to the feeder to compensate for deviations in the position of the edge of the goods conveyed from the letoff truck to the feeder. Adjustment of the feeder angle about a pivot axis to provide the desired bias angle setting is provided by a powered sprocket mounted on the feeder and positioned between idler sprockets. The sprockets are engageable with a chain member extending between the ends of a transverse track on which one end of the feeder is supported by rollers. When the desired feeder position is obtained the feeder may be positively locked in that position.

Abstract: A device for making miter cuts in workpieces includes a saw guide pivoted to either a bottom surface B or a top surface A of a board. The saw guide includes two plates spaced above the board surfaces by a pivot assembly and a swing assembly. Almost any commercially available circular power saw may be accommodated by placing the saw base on the plates, positioning the saw blade within alignment slots in the assemblies, and adjusting rails on the plates against the saw base. A keeper on one of the rails prevents the saw from jumping out of the saw guide. When the rails are properly adjusted, the circular saw blade will travel along a saw line between the plates from alignment slot to alignment slot. The top surface A of the board has a straight edged backup adjacent a planar work area. 90.degree. and 45.degree. stops on the top surface reliably and accurately position the saw line normal to or at a 45.degree. angle to the straight edge and aligned with 90.degree. and 45.degree. slots in the backup.

Abstract: The invention provides a method and apparatus for cutting a magnetic core spirally wound from a ribbon of glassy metal. The core is mounted on a mandrel, and a portion of the core is appointed to be cut. A clamping mechanism applies to the outside peripheral surface of said portion, a compressive clamping force directed toward said surface and normal thereto. A positioning mechanism locates and fixes the core and mandrel onto an indexing mechanism. The indexing mechanism moves the core and mandrel to a preselected fixed position, and a cutting mechanism cuts the core.

Abstract: Apparatus for cutting thin laminae of stone, e.g. marble, comprising a saw having two disc blades, a bogie movable beneath the saw and having a pair of vacuum-operated slab-gripping devices each of which is adapted to support a slab upwardly on its edge, and a second bogie movable in a direction transverse to the first bogie and carrying structure for tumbling a slab supported on one longitudinal edge, through 180.degree., so that it rests on its opposite longitudinal edge.

Abstract: Apparatus for cutting planar workpieces including a saw movable through a cutting stroke in a substantially horizontal direction with a first and a second table being provided on opposite sides of the saw. The planar workpieces are first fed from the first table onto the second table through a first cutting operation and the cut parts are rotated relative to the saw on the second table and then fed through a second cutting operation back onto the first table. A pusher device is provided on the second table for feeding the planar cut parts and a feeding device on the first table operates to selectively feed planar strips from the first table to the second table. The first table is provided with two sets of rollers capable of conveying planar parts in two transverse directions with the sets of rollers being vertically displaceable relative to each other.

Abstract: The punching machine of this invention comprises a punching head provided with a plurality of punch/die pairs for effecting punching operations of a metal sheet. In the punching head there are defined a plurality of operative positions in each of which there is positioned and actuated a punch/die pair of the said plurality of punch/die pairs. Each punch/die pair is operated independently from the others. The punching machine further includes a numerically controlled programmable manipulator equipped with pincers for gripping a metal sheet and displacing it between the punchs and dies of said plurality of punch/die pairs.

Abstract: In a shearing device for cutting plates, such as sheet metal plates, a pl feeding apparatus includes a carriage mounted for movement above and between a plate feeder and the shearing device. A rotatable carrier is mounted on the carriage for lifting and holding plates. The rotatable carrier can be turned through 360.degree.. A plurality of vacuum suction members are positioned on the carrier for holding the plates.

Abstract: The invention relates to a method of cutting thin laminae of stone, e.g. marble, which comprises bonding a backing layer to the opposed faces of a slab of stone, supporting the slab with backing layers attached, in an upward position on its edge, cutting the slab along a cutting plane parallel to and midway between the opposed faces of the slab to a depth which is about half the depth of the slab, tumbling the slab on to its opposite longitudinal edge, and cutting through the remainder of the depth of the slab to leave a lamina of stone adhered to each backing layer. The invention also includes apparatus for carrying out the aforesaid method, comprising a saw having two disc blades, a bogie movable beneath the saw and having a pair of vacuum-operated slab-gripping devices each of which is adapted to support a slab upwardly on its edge, and a second bogie movable in a direction transverse to the first bogie and carrying means for tumbling a slab supported on one longitudinal edge, through 180.degree.

Abstract: A sheet metal workpiece is held by holders as the workpiece is cut and moved relative to a device such as a shearing machine or punch press. An improved apparatus and method is provided to precisely position the sheet metal workpiece relative to the holders. This apparatus includes a first gripper assembly which is disposed at an opening in a support structure for the sheet metal workpiece. The first gripper assembly moves the workpiece to position it along a first axis. A second gripper assembly is disposed at another opening in the support structure and moves the workpiece to position it along a second axis which extends transversely to the first axis. The two gripper assemblies can be moved between extended positions projecting upwardly from the support structure and retracted positions in which the gripper assemblies are disposed within the support structure.

Abstract: The present invention embraces the method of, and apparatus for, producing a stream feeder for flowing streams of molten mineral material, such as glass, from which filaments are attenuated comprising positioning a workpiece such that a pin enters a first locating hole of a set of locating holes, forming a first group of orificed projections in the workpiece, subsequently positioning the workpiece such that the pin enters a second locating hole of the set and forming a second group of orificed projections in the workpiece.

Abstract: In a cutting apparatus wherein an object is cut in such a manner that a cutting blade is rotated relatively to the object, in which the cutting blade is constructed as a straight blade having a straight cutting edge which is defined by:(a) a first blade surface to be positioned at an angle with a predetermined cutting plane of the object; and(b) a second blade surface to be positioned at a larger angle with the cutting plane of the object than that of the first blade surface,wherein on the relative rotation of the straight blade the first blade surface is so disposed as to be withdrawn from the cutting plane of the object toward the second blade surface without substantially contacting with the cutting plane.

Abstract: A portable sawmill includes a log supporting mechanism for holding a substantially horizontal log. A chain saw with a substantially horizontal effective cutting edge at least as long as the log is supported at only one end by a saw mounting assembly with the cutting edge generally parallel to the axis of the log. The saw mounting assembly is adapted for lateral movement relative to the log, as well as upward and downward movement, so that the saw can be positioned beneath a portion of the log and moved upwardly through the log to cut wood slabs. The saw is pivoted to the saw mounting assembly so that the angle between the effective cutting edge and the axis of the log can be adjusted to produce elongated wood fibers during cutting. A pivoting mechanism is provided for rotating the log between cuts so that slabs tapered from one side to the other can be cut.

Abstract: Automatic power shearing apparatus and method for trimming sheet material into finished blanks comprising blade means, x and y axis feeding means and sheet feeding means including a first power driven means for moving the sheet in x and y directions and a second means responsive to a control acting to move the sheet in preselected directions by a constant counter balance against the first power driven means.

Abstract: The invention relates to annular diaphragms for example for use in clutches, comprising a peripheral portion forming a Belleville washer and a central portion fragmented by slots into radial segments. By means of the method according to the invention, in order to obtain a reduced width for the open end of the slots, the two edges of the slots are produced in two separate operations, namely a first cutting operation in the course of which one of these edges is first formed and then a second cutting operation in the course of which the other edge is formed.

Abstract: An apparatus for sawing a stone block to be severed into a plurality of slabs. The apparatus comprises a plurality of saw blades characterized by arranging said blades in series in the cutting plane of said blades. The cutting depth of each blade in the series is progressively deeper from the first blade to the last one so that a stone block which is successively fed to said series of saw blades may be efficiently severed.

Abstract: A stack of glass blanks is moved on a support into position beneath a head carrying a cutting tool. The uppermost blank is scored by the cutting tool under quidance of a templet and the tool withdrawn. Pick-up means, advantageously with suction cups, removes the scored blank laterally from the stack and the stack and cutting head are brought closer together by a distance equal to the thickness of a blank, preferably by raising the stack support. The next blank is then scored and the operation repeated until all the blanks in the stack have been scored and removed, whereupon a new stack is brought into position. Means are provided for centering the stack with respect to the cutting head, and centering means adjacent the top of the stack centers the uppermost blank with respect to the cutting head, advantageously by jack means positioned on the sides of the stack.

Abstract: An apparatus or system for the aligning and severing of fabric webs which have a thickness differing in the longitudinal direction, for example a terry cloth fabric with napless lanes extending crosswise to the longitudinal direction and lanes which have a nap arranged in an alternate pattern comprises aligning means which cooperate with the boundary areas between adjacent lanes of the fabric web and which extend crosswise to the web pull off direction. A cutting device is arranged crosswise to the web pull off direction at a location after the aligning means and braking means in the form of individually adjustable brake elements which extend across the width of the fabric are arranged between the aligning means and the reel supply of the fabric material.

Abstract: Transformer core sheets are cut out by selectively intermittently advancing a metal strip and cutting off the ends at various angles by changing the cutting angle of a swivel-type cutting shear. Trapezoidal or parallelogram pieces are cut by cutting off the lengths of strip along shear lines alternately at 90.degree. to each other. Hexagonal pieces are formed by severing the strip with one oblique cut, spacing the stock and the cut-off piece lengthwise from each other, and then cutting off a tip on each piece by a single cut that bridges the gap between the pieces, at 90.degree. to the previous cut. For this purpose, the cut-off piece may be advanced or the stock retracted, or both, to space apart the stock and the cut-off piece. A further cutter, at right angles to strip travel, may be provided for cutting off tips of the workpieces previously obliquely cut, at right angles to the direction of strip movement.

Abstract: A metal door frame has trim molding applied to its flanges by the aid of separate clips. Each clip interfits an aperture in the flange and a notch at the flange edge. The aperture and the notch are punched in the flange so that the spacing thereof from the corner of the flange is constant whereby alignment of the clips is assured notwithstanding lack of critical dimensional control of the flange.

Abstract: This invention is directed to an apparatus and method for making a shingle from a block of wood. The block of wood is canted and a shingle is sawed from this block of wood. The shingle has a thick end and a thin end. After the shingle has been sawed, the block of wood is moved away from the saw and canted at a new angle with respect to the saw. Then, the block of wood is moved toward the saw and another shingle is sawed. This process is repeated to form shingles from a block of wood.