Abstract: A cutting apparatus in a strong plastic housing having two rotatable slitter blades. The cutting apparatus is mounted on a guide rail for movement by hand across a tightly held sheet of media such as paper, vellum or film. The slitter blades are mounted back-to-back at an angle, and the shafts to which the blades are mounted are positioned in the housing so that their longitudinal axes are not parallel to each other. This offset minimizes the region of contact between the two blades.

Abstract: A rotary cutter includes an elongated handle having a gripping portion connected to a platform having a peripheral edge. A generally circular blade is rotatably mounted on a shaft extending through an aperture formed in the platform. The cutter also includes a blade guard having an arcuate portion. The guard is rotatable by the user to expose the cutting edge of the blade prior to using the cutter.

Abstract: A compact, reliable and convenient drywall-sheet trimmer has opposed cutter disks (7, 8) positioned rotationally in opposing walls (3, 4) of a trimmer channel (2) having a slide bar (19) that is adjustable in positioning intermediate the opposing cutter disks and a channel bottom (21). Pinion teeth (25) on an adjustment shaft (24) are rotated by helical worm gearing (28) with an adjustment knob (30) to actuate rack teeth (26) on slide rods (22) attached to the slide bar for adjusting distance of the slide bar from the cutter disks to control widths of trimming cuts. Surfaces of drywall sheets (6) are scored or cut to cause the drywall sheets to be breakable by applying bending moment along lines of scored or cut surface material and/or indentations caused by cutting entry of the opposed cutter disks.

Abstract: A cutter for simultaneously severing opposed sides of a drywall panel. The inventive device includes a guide assembly for sliding along an exposed edge of a drywall panel. Support columns project from the guide assembly for positioning along respectively opposed front and rear faces of the panel. Cutting assemblies are secured to lower ends of the support columns and engage the faces of the panel to effect cutting of the panel along a line parallel to the exposed edge as the guide assembly is traversed thereover.

Abstract: A method and apparatus for cutting cloth into shapes for use in quilts or the like. A sheet of transparent material has a first linear slot disposed through a sheet at a first location on the sheet so that a cutter can extend therethrough to cut several layers of cloth. A second linear slot is disposed through the sheet at a second position so that the cutter can be used to cut through cloth located below the second slot. The second slot is oriented at an angle of less than 90.degree. with respect to the first linear slot so that various shapes can be made using the combination of straight and angled cuts.

Abstract: A cutter includes a movable blade, a handle and a slider. The movement of the slider causes the blade to move between an extended cutting position and a retracted storage position. The slider includes one projection which is pressed against a surface of the blade so as to frictionally engage the blade for preventing its free rotation or movement during the cutting operation.

Abstract: In order to facilitate a scoring of a sheet of material such as drywall, plasterboard, wallboard or the like, an apparatus includes a pair of arms each having an upper end and a lower end where the arms are spaced apart to define a sheet-receiving channel for receiving the sheet of material therebetween. The lower ends of the arms define an entry point for the sheet of material so the sheet of material can be placed between the arms and within the sheet-receiving channel with the sides generally perpendicular to a plane defined by the arms. The upper ends of the arms are connected to accommodate relative movement of the lower ends of the arms toward and away from one another. The apparatus includes a cutter for scoring at least one side of the sheet of material which is operatively associated with at least one of the arms at a point located generally remote from the upper end thereof.

Abstract: A rotary cutter having a handle, a cylindrical head formed on one end of the handle and having a planar surface on each side of the head, an actuating member pivotally mounted in the head, a circular blade mounted on the actuating member and having a pinking or wave shaped cutting edge offset from the blade to form a hub, the blade being secured to one side of the actuating member with the hub located in a parallel relation to one of the planar surfaces, and a finger guard formed as an integral part of the handle and head.

Abstract: A rotary cutter including a handle, a cylindrical head formed on one end of the handle and having a planar surface on each side, the handle and head having an internal cavity, a unitary actuating member mounted in the cavity in the handle and head, a circular blade supported by the actuating member for movement between a storage position and an operating position with respect to one of the planar surfaces, the actuating member including a spring for biasing the blade to the storage position, and a resilient latch for locking the actuating member in the operative position.

Abstract: A utility knife has a bolster formed at a downward angle from a body which receives a blade shield and a circular blade. A channel is formed in the body at the bolster and has an upper pair of notches and a lower pair of notches. The blade shield has a circular portion which has a diameter greater than that of the blade and a pair of resilient arms each with a tab. When the tabs are engaged with the lower pair of notches, the blade shield shields the blade, and when the tabs are engaged with the upper pair of notches, the blade is exposed.

Abstract: A rotary cutter having a handle, a cylindrical head formed on one end of the handle and having an internal cavity with a planar surface on each side, an actuating member is pivotally mounted in the cavity with a circular blade secured to one side of the actuating member in a parallel relation to one of the planar surfaces, a pivoting member is provided on the periphery of the head for moving the actuating member to an operative position with a portion of the blade projecting outwardly from the cylindrical head, the actuating member being biased to a storage position within the cylindrical member.

Abstract: A temper mill installation for steel strip has an uncoiler, a rolling mill for the strip, a shearing machine for cutting the strip to remove damaged turns at the end of a coil and a coiler for coiling the strip after rolling. To avoid wastage of sheet, the shearing machine has a movable shearing head and is positioned adjacent the strip path between the uncoiler and the rolling mill. The shearing head is movable across the strip path to effect cutting of the strip.

Abstract: A dry-wall cutting tool is described. It has a block-like configuration and is designed to slide over the edge of the drywall and to cut both sides of the drywall to the same distance from the edge and at the same time as it does so. The depth of the cut (i.e. distance from the edge of the drywall being cut) can be controllably varied considerably and it will typically be between 1/8 inch and 6 inches deep from the edge of the drywall that is being cut. The cutting tool has vertical threaded shafts upon which are mounted cutting wheels and rubber or nylon rollers, with ball bearings between the shafts and the cutting wheels and rollers. Due to its construction the twin cutting can be done quickly and with little manual effort or force.

Abstract: A tractor-towable sidewalk edging device includes a pair of laterally spaced cutting blade members and the depth of the cut the blade members make in vegetation to be trimmed is controllable by adding or removing weight members to receptacle members which form a part of the device. The lateral spacing between the cutting blade members is adjustable in three different ways. Each cutting blade member may also be pivoted about a vertical axis.

Abstract: A saw blade assembly comprises a laminated structure of three side-by-side parallel strips, one two or all of which may have spaced teeth formed along one edge. Where only one strip has teeth, it is sandwiched between the two other strips and the teeth are of triangular shape when seen in plan and are bevelled on both edges to produce pointed tooth tips. Where two strips have teeth, the strips are arranged one on each side of a center strip. Again, the teeth are of triangular shape when seen in side elevation and are contoured to form pointed tips. The roots of the teeth on one strip are spaced laterally from the roots of the teeth on the other strip because of the presence of the center strip. In another form, each strip has teeth along one edge, the assembly thereby providing three parallel, side-by-side rows of teeth. The teeth are of triangular shape when seen in side elevation and are contoured to form pointed tips.

Abstract: There is provided a laminated glass cutter. The cutter includes a rectangular body frame and a pair of opposed cutting members associated therewith. In use the laminated glass cutter may cut a laminated sheet into two adjacent separate components upon a single pass of the body over the sheet.

Abstract: An envelope opener is formed of a rectangular casing having a central transverse guide slot, two cutting disks project into the slot from either side and have mutually interfacing edge portions thereat. A spring resiliently maintains the edge portions of the disks in constant contact in the slot. The guide slot has an upwardly convex bottom surface to reduce friction of an envelope being guided through the slot.

Abstract: A cutter having a circular rotary blade comprises: a handle; a blade mounting section formed on one end of the handle; a circular blade secured to one side of the blade mounting section and rotatably carried at its central portion; a slot having an opening formed in the blade mounting section at a position behind the central portion of the circular disc and corresponding to the circular blade; a pressing member movably received in the slot and projectable through the opening of the slot into pressure contact with one side of the circular blade; and an operation member adapted to limit the movement of the pressing member so as to adjust the pressure of contact between the pressing member and the circular blade, the operation member being held in engagement with the pressing member through cam means and positioned on the opposite side of the blade mounting section to the circular blade.

Abstract: A creasing tool for relatively soft material such as corrugated board including a generally cylindrical roller mounted for rotation upon an axle which is journaled on a retaining yoke. The roller includes an annular ridge projecting from its surface about substantially the entire circumference thereof and generally perpendicular to the axis of rotation of the roller. An elongate handle is connected to one end of the yoke opposite the end upon which the roller is journaled so that the operator may guide the roller over the surface of the material, thereby allowing the projecting ridge to produce a crease or weakened line on the surface of the material for easy bending or cutting along the line.

Abstract: A cutting device comprising an elongate arm and a pair of mountings for circular rotatable cutting blades, each of the mountings being slidably mounted on the arm. A circular rotatable cutting blade is rotatably mounted on each of the mountings. Each of the mountings is selectively lockable in position on the arm so as to selectively prevent sliding movement of the mountings. An elongate handle is attached to the arm intermediate the pair of mountings.

Abstract: A rotary cutter which includes an elongated handle having an aperture extending through its one end, a shaft extending through the aperture so as to be supported by the handle, a disc blade rotatably mounted on the shaft and lying in a plane perpendicular to the longitudinal axis of the shaft, and a member engageable with the shaft, with a bearing projection formed on the handle coaxially with the aperture.

Abstract: A rotary cutter comprises a generally elongated plate-like handle having a bearing aperture defined at one end thereof, a shaft member supported by the handle and extending through the bearing aperture, a disc blade rotatably mounted on the shaft and lying in a plane perpendicular to the longitudinal axis of the shaft member and in parallel to any one of the opposed surfaces of the handle, and a device for adjustably applying a frictional force to the disc blade in a direction generally perpendicular to the disc blade. The disc blade is, when the rotary cutter is in use, rotated in contact with the material to be cut in a controlled manner.

Abstract: A cutting tool which may be pulled through sheet material to be cut has a pair of spaced circular cutting blades on a first shaft and a single circular cutting blade on a second shaft spaced vertically with respect to the first shaft and wherein both shafts are secured to a vertically standing flat body member in which a cutaway portion including a beveled surface defines paths for the work piece and a narrow section of material cut therefrom by the cutting tool.

Abstract: A glass cutter for flat glass comprising a frame having a first arm connected to a transversely disposed second arm, a glass cutting head being slidably disposed on the first arm, which glass cutting head may be selectively locked in position at any desired point along the first arm, and the second arm being provided with rollers or wheels adapted to engage and be guided by an edge of a sheet of glass while the cutting head engages a face thereof. The rollers or wheels being preferably mounted on axes disposed at an angle of from 15.degree. to 75.degree., preferably 30.degree. to 60.degree. to the longitudinal axis of the first arm.

Abstract: The present invention relates to an asphalt cutter including a fork to be attached to a working machine or the like. A cutting disc is rotatably supported on a shaft attached to and extending between the legs of the fork. A guiding device, preferably in the shape of a housing, at least in part enclosing the cutting disc is provided with a slot through which the cutting disc is projectable. The guiding device is continuously shiftable in the longitudinal direction of the fork between a position in which the cutting disc is substantially retracted into the slot and a position in which the cutting disc extends a predetermined amount outwardly from the slot.

Abstract: A pocket sized record album opener that is adapted to be held in the hand and contains a recessed cutting edge that slidably engages the cellophane bridge over the open mouth of an album jacket thereby opening the same, all the while, the cutting edge being free of the actual record and the user's hand. In one embodiment, a pair of serrated disk-like cutting wheels are mounted on spaced apart parallel axles such that their lateral surfaces are at different distances from a flat fence-like guide surface. The fence-like guide surface may be moved relative to the position of the pair of serrated disc-like cutting wheels, thereby permitting the apparatus to be utilized in cutting covers, whereby the cuts in the covers to be made vary in distance from the surface on which the fence moves. A cover is pivotably secured to the housing carrying the axle, acting as a cover for the fence-like guiding surface and the exposed portion of the serrated cutting wheels.

Abstract: A scoring tool for forming a scoreline having a predetermined depth in a composite container label layer is disclosed, including an annular scoring blade and a holder assembly supporting the blade for rotation about an axis. The holder assembly includes a blade holder member having an annular portion at one end upon which the blade is mounted, the outer diameter of the annular portion corresponding with the inner diameter of the scoring blade. The blade holder member also has at its other end a flange portion the outer diameter of which is less than that of the blade member. The holder includes an annular locking member for retaining the scoring blade in contiguous relation with the flange portion. The locking member is mounted concentrically about the holder member annular portion, the outer diameter of the locking member being less than that of the flange portion.

Abstract: In a cutting device and, in particular, a device for cutting a flat object, such as a pizza, or the like, a base is provided which has two oppositely facing flat surfaces thereon. Each of the flat surfaces has scribed therein a plurality of straight slots which intersect to subdivide the surface into a plurality of segments. The segments may be pie-shaped, square, rectangular, or the like. A cutting instrument is drawn through each slot on one of said surfaces to cut a superimposed flat object, such as a pizza, into pieces.

Abstract: A handtool for the application of sheet materials to surfaces, specifically the application of wall coverings to walls, is of obtuse angle triangle shape, with a knife blade at each base apex, the tip apex being rounded for folding the sheet into a corner and the edges adjacent the tip constituting guides for the respective knife blades. One blade may be circular and rotary with the guide edge tangential thereto, while the other blade is triangular with the guide edge colinear with the cutting edge. The circular blade may be toothed with a recessed cutting edge, while the triangular blade may be equilateral to provide six cutting edges by transposition and reversal. Two similar guides are provided on opposite sides of the body slidable in guideways between a retracted position and extended positions in which they lie alongside the knives to guide their cutting with respect to a surface engaged by the guide.

Abstract: A fabric cutting tool comprising an elongated shank curved and bifurcated at one end and a handle on the other, the bifurcated end having a spring loaded rotary cutting blade rollingly mounted between the bifurcation, a protective shield for the blade, a pair of guide wheels for assisting in the cutting, and a foot plate providing a cutting surface for the fabric.

Abstract: A cutting device comprises a holder including a pair of spaced plate members connected at one peripheral edge to each other to define an accommodation space therebetween. A cutting disc is, either rotatably or fixedly, mounted on a shaft member and situated within the accommodation space. Rotatably mounted on the shaft member and arranged in the vicinity of and side-by-side relation to the cutting disc is at least one padding disc which acts to retain a material to be cut in position during rotation thereof. Rotation of the padding disc is effected in contact with the material as the cutting device is moved along an intended line of cutting during actual cutting operation.

Abstract: A portable tool and method for connecting a cross piece to a series of parallel boards in a wooden frame assembly, by connecting a guide member temporarily to outer coplanar faces of the boards, directing the tool along the guide member and across those board faces to cut aligned similar notches therein, and then removing the guide member and connecting it or another member into the notches as a cross piece interconnecting the boards. To perform the notching action effectively, the tool has a first guide surface which engages and moves across the outer faces of the boards, with a cutter projecting inwardly beyond the plane of those faces to cut the desired notches, and with two additional guide surfaces engaging a lateral edge and outer face respectively of the guide member to positively locate and position the tool as it moves across the boards and forms the notches.

Abstract: A rotary cutter which includes an elongated handle having an aperture extending through its one end, a shaft extending through the aperture so as to be supported by the handle, a disc blade rotatably mounted on the shaft and lying in a plane perpendicular to the longitudinal axis of the shaft, and a member engageable with the shaft, with a bearing projection formed on the handle coaxially with the aperture.