Abstract: Disclosed is a bag including a front wall and a rear wall and having an open mouth portion in which the front wall and rear wall are joined by pleated portions or gussets. The bag is manufactured so that a longitudinal, thermally welded seam is placed inside a portion of at least one of the gussets at a point other than the central fold. The bag preferably includes handles which are integral extensions of the front and rear walls and the gussets. The bag manufactured according to the principles of the present invention thus eliminates or minimizes failure of thermally welded seams.Also disclosed is a method for manufacturing the bags and an apparatus for manufacturing the bags.

Abstract: A ball end mill includes an end mill body, an indexable cutter insert, a clamp screw and shift preventing mechanism. The body has an insert receiving recess formed in a forward end portion thereof. The insert has a front face, a rear face and at least two convexly curved side faces, and has at least two convexly curved main cutting edges each defined by the intersection of a respective one of the convexly curved side faces with the front face. The insert is received in the insert receiving recess with the rear face mated with the bottom face of the recess in such a manner that one of the main cutting edges is indexed in a cutting position.

Abstract: A packaging machine and more particularly a machine for setting up a container from a blank (16) of corrugated board is disclosed as including a uniquely arranged magazine (10) for a plurality of container blanks (16) of corrugated board and including a structure to directly set up the shape of the container in a controlled manner for enabling a product to be easily loaded and for subsequent processing by the packaging machine. The unique direct setup arrangement utilizes arcuately moving arms (24) with vacuum cups (26) thereon which attach themselves to a blank (16) in the magazine (10) and move through an arc of less than 90.degree. from a vertically inclined position to a generally horizontal position. The arms (24) and blank (16) are then moved horizontally so that the side edge portions of the major panel (18) of the blank (16), such as the bottom panel, are positioned under horizontal flap guides (74).

Abstract: The device comprises a box-like body inside which two shoes are slideable and are actuated in opposition. A shoe is compsed of a plate which has a guiding opening for a gib of the other shoe. Brackets are rigidly and protrudingly associated with the top of the gib and with the lower end of the plate and bear respective jaws which are adapted, in jaw closure position, to define a guiding duct for a bar and, in opening position, a passage for the bar-pusher. The opposite actuation of the shoes is actuated by a shaft controlled by a fluidodynamic jack having arms which bear wheels acting between the bracket supported by the gib and a protrusion of the plate.

Abstract: For machining the tread circumferences and brake disks of sets of wheels dismounted from railroad vehicles a lathe is proposed wherein each wheel in the set is driven by four friction rollers that can be forced against the tread and are positioned essentially diametrically opposite one another in pairs.

Abstract: The device for controlling the facing of a bar on an automatic lathe for machining bars, comprises a bar-pusher actuated by a traction element to cause the advancement of a bar towards the lathe, a carriage slideable on a guide parallel to the traction element, a hook for intercepting the carriage in a bar loading position, a clutch adapted to keep the bar-pusher rigidly associated with the carriage when the carriage is free to slide on the guide and to allow the bar-pusher to move with respect to the carriage when the carriage is intercepted. The hook is controlled by a sensor adapted to detect the end of a bar to be machined at the entry point of the lathe and to control the hook during free sliding of the carriage. A further sensor is provided to actuate the bar-pusher in the bar facing position.

Abstract: A throw away cutting tool comprising a holder formed with a wedge groove and a throw away insert having a cutting edge at one end thereof and a wedge portion at the outer end, the wedge portion being adapted to be clamped in the wedge groove by elasticity of the material of the holder. The holder is at least partly made of cemented carbide for higher rigidity and cutting stability. Also, the radius of curvature at the deep end of the wedge groove is optimized for crack resistance. Further, the angle of the V-ridge on the holder is interrelated to the angle of the V-groove in the insert for more holding stability and crack resistance.

Abstract: A corner forming unit of a package forming machine which employs an H-shaped guide over which the packaging material passes after it has been longitudinally sealed. A pair of rollers outside of the tube of material forms the edges of the packaging material into the H-shaped guide to form the corners of the material from which individual filled rectangular packages will be formed.

Abstract: Apparatus for use in cutting a workpiece on different centers. The workpiece is mounted in a chuck on a spindle top. The spindle top is mounted on the upper end of a rotatable, vertical spindle shaft adjacent to a cutting tool in different positions spaced apart laterally relative to the spindle shaft axis. When the spindle shaft is rotated with the spindle top in one position, the tool will cut the workpiece on one center. In another position of the spindle top, the tool will cut on a different center.

Abstract: A supporting head for an apparatus for machining plates of glass, marble and the like, including a main head supporting an auxiliary head; the main head is adapted to support large plates, the auxiliary head is adapted to support small plates. The main head has a main shaft connected to an auxiliary shaft of the auxiliary head by means of gears. The gears and main head may be selectively locked and released to allow for a rotation of the main head or a rotation of just the auxiliary head.

Abstract: A container is constructed from a paperboard sheet having a channel including a surface area of the paperboard sheet from which paperboard material has been removed and a tear strip at least partially bounded by the channel for opening the container by separation of the paperboard sheet along the channel.

Abstract: A quick-change tool comprises a shank assembly and a cutting head cartridge detachably mounted on the shank assembly. The cartridge supports a cutting insert and is provided with a receptacle on the rear end thereof. The shank assembly comprises a shank body having an axial bore and a draw bar slidably held in the axial bore. The draw bar is provided with a plug on its front end. The shank body is provided with a step-like extension extending forwardly from the lower part of its front end surface below the axial bore. A key adapted to be snugly received between a pair of laterally opposed walls on the cartridge is fixed to the step-like extension. The receptacle is formed of laterally opposed side walls and a cross bar connecting the upper ends of the side walls. Laterally elongated upper abutment surfaces are formed on the rear end surface of the cross bar portion and on the front end surface of the shank body.

Abstract: An indexable disposable insert is described having eight contiguous edge faces of equal length and two octagonal side faces having alternate corners with equal obtuse angles, cutting edges being formed at the junction of at least one of the octagonal side faces and each of the eight contiguous edge faces. Four identical pairs of cutting edges of equal length arranged about an obtuse angle are provided. The obtuse angles which may vary in the range 135.degree. to 170.degree. but are preferably 160.degree.. The insert can have chip breakers applied to it.

Abstract: A method of producing an envelope having an integrally formed external pouch on one side for accommodating a despatch note, waybill or the like, comprises the steps of longitudinally folding a sheet of plastics material from a first reel and transporting the folded plastics sheet to a downstream sealing station while simultaneously feeding a strip of sheet plastics to overlie the folded plastics of the first reel to be transported therewith, and sealing folded plastics to form the envelope while simultaneously applying the same process to the strip plastics, to form the pouch on one wall of the envelope.