Abstract: An improved laminated staple (1) comprising a steel sheet bent as a “V” in a central portion thereof so as to form a central edge (12), two central walls (10, 20) diverging outwards from said central edge (12) and defining a first angle (?) therebetween, and a pair of ribs (30, 40) each extending laterally from said central walls (10, 20). The central walls (10, 20) and the ribs (30, 40) define a second angle (?) therebetween, which has a greater width than the width of said first angle (?).

Abstract: A device for mating strips joined at an angle for forming rectangular frames having a L-shaped element, acting as movable abutment for the strips, has a symmetrical hinged connection to a pair of linkages, pivotally connected to a free end to the supporting element fixed to the platform, and an arm protruding outside the L-shaped element along the extension of its bisecting line and undergoing elastic centering. The element and linkages are accommodated in the supporting element in two mutually aligned seats which lie transversely to the slot of the platform, and are each constituted by a bush from which a slider protrudes; the slider is pushed, until it rests against an abutment of the bush, by a cylindrical spring which acts between the slider and the screw-type cap used also to adjust the preloading of the spring.

Abstract: An apparatus for feeding stapling elements grouped in sets to a stapling machine which is suitable to insert the elements astride the joint of strips arranged at an angle in order to provide perimetric frames, supporting frames and the like, comprising a magazine which is composed of at least one inclined channel suitable to accommodate a plurality of aligned sets and having a downward outlet for the sets, means for individually releasing the sets from the at least one channel through the outlet, a holder which comprises at least one seat arranged below the outlet of the at least one channel, actuators for actuating the holder between a position for receiving a set from the at least one channel in the at least one seat and a position for positioning the set with respect to the stapling machine so as to align the punch of the machine with the stapling elements to be inserted.

Abstract: An automated apparatus for feeding and positioning strips in machines for making rectangular frames which are equipped with four stapling units for joining, by steel staples, the strips that form the frames, wherein the strips are picked from corresponding conveyor belts and are transferred and positioned correctly in the stapling units by four motorized carriages which are provided with rotating arms fitted with clamps for gripping the individual strips and move on their respective guides, which are parallel to the conveyor belts that feed the strips for a first couple of the carriages and are perpendicular to the conveyor belts for a second couple of the carriages.

Abstract: A cross-section of one of the strips in a frame is digitized in binary format by means of a scanner and graphically visualized; dimensions of the cross-section and points suitable for positioning a strip locking device are determined, together with points of application of the stapling elements and the number of the elements to be applied in each point. A frame assembling machine is then activate to perform the actual stapling of the strips.

Abstract: An automated apparatus for feeding and positioning strips in machines for making rectangular frames which are equipped with four stapling units for joining, by steel staples, the strips that form the frames, wherein the strips are picked from corresponding conveyor belts and are transferred and positioned correctly in the stapling units by four motorized carriages which are provided with rotating arms fitted with clamps for gripping the individual strips and move on their respective guides, which are parallel to the conveyor belts that feed the strips for a first couple of the carriages and are perpendicular to the conveyor belts for a second couple of the carriages.

Abstract: A device for mating strips joined at an angle for forming rectangular frames having a L-shaped element, acting as movable abutment for the strips, has a symmetrical hinged connection to a pair of linkages, pivotally connected to a free end to the supporting element fixed to the platform, and an arm protruding outside the L-shaped element along the extension of its bisecting line and undergoing elastic centering. The element and linkages are accommodated in the supporting element in two mutually aligned seats which lie transversely to the slot of the platform, and are each constituted by a bush from which a slider protrudes; the slider is pushed, until it rests against an abutment of the bush, by a cylindrical spring which acts between the slider and the screw-type cap used also to adjust the preloading of the spring.

Abstract: A laminar staple comprising two walls arranged at an angle and two ribs which protrude laterally from the walls; the walls and the ribs form a substantially W-shaped profile which has a cutting edge at one end and a striking edge at the opposite end; the staple is peculiar in that the ribs enclose, by means of their respective walls, an angle whose value decreases from the cutting edge to the striking edge.

Abstract: An apparatus for feeding stapling elements grouped in sets to a stapling machine which is suitable to insert the elements astride the joint of strips arranged at an angle in order to provide perimetric frames, supporting frames and the like, comprising a magazine which is composed of at least one inclined channel suitable to accommodate a plurality of aligned sets and having a downward outlet for the sets, means for individually releasing the sets from the at least one channel through the outlet, a holder which comprises at least one seat arranged below the outlet of the at least one channel, actuators for actuating the holder between a position for receiving a set from the at least one channel in the at least one seat and a position for positioning the set with respect to the stapling machine so as to align the punch of the machine with the stapling elements to be inserted.

Abstract: Shearing assembly (10) for cropping machines (11) suitable to shear elements made of wood, plastic, metal, alloys or otherwise, shaped as rods (13) or sheet and placed on a work plane (11a). The shearing assembly includes at least a movable trolley (14) supporting at least a rotary blade (12) constrained to a supporting structure (15) of the cropping machine (11) by at least one guide (16), the movable trolley (14) moving alternately from an inactive position, wherein the blade does not come into contact with the work plane (11a), to a working position wherein the blade (12) comes into contact with the work plane (11a) to carry out the shearing operation.

Abstract: An apparatus for inserting, in the molding of picture-frames, metal staples adapted to retain laminar backing elements for pictures, photographs and the like, comprising a beam which is arranged horizontally above the surface that supports the molding, two fixing tools which are guided on the beam transversely to two opposite sides of the molding, an actuation for adjusting the distance between the fixing tools along the beam as a function of the distance between the sides, and a further actuation for vertically actuating the fixing tools into the position for applying metallic staples in the sides.

Abstract: An apparatus for manufacturing rectangular frames composed of strips which are assembled by way of mutual joining elements which are driven into them by stapling machines so as to straddle the joints formed by mating the strips at right angles, which comprises: a horizontal beam which is supported so that it is rotatable centrally about a vertical axis so as to form two arms which lie diametrically with respect to the vertical axis, each arm being provided with sliding guides for respective carriages; two levers, which are articulated to each one of the carriages about axes which are parallel to the vertical axis; a grip element for a respective one of the strips that constitute the frame being mounted on each one of the levers; elements for actuating the grip elements, the levers, the carriages and the beam so that in a first position of the beam, the grip elements are located in a position for picking up the strips to be assembled; in a second position, the levers are rotated so that the strips picked up by

Abstract: Laminar staple for staple driving machines having a loader which includes a guide channel with a cross section that is complementary to the shape of the staple. The staple includes two walls substantially perpendicular to each other and defines a corner and two ribs extending substantially perpendicularly to the walls. The walls and the ribs of the staple have a cutting edge and at least one of the ribs is provided at the end opposite to the cutting edge with a chamfer cooperating with a respective relief formed in the channel of the loader.

Abstract: Laminar staple including two walls which are substantially at right angles to each other and which form an edge and two ribs which extend substantially at right angles to the walls; the walls and the ribs form a cutting edge, and the ribs have two planar portions substantially parallel to the edge which progressively diverge proximate to the cutting edge into circular arc portions.

Abstract: Laminar joining staple formed of a rectangular metallic plate having a cutting edge along one side and at least two ridges arranged symmetrically with respect to the centerline plane of the plate, in which the two ridges include portions which diverge, with respect to the centerline plane, toward the cutting edge.

Abstract: The clip fastener comprises two mutually substantially perpendicular walls forming a corner and two ribs protruding perpendicularly with respect to the walls. The ribs are arcuate, and each have an intermediate portion which is located at a greater distance from the corner than end portions thereof.