Abstract: A connecting chain link with two loops for accommodating chain links of attached chain lengths comprises two main link parts identical in shape and dimensions and assembled along a first contact surface and a second contact surface which is complementary to the first one, and a limiting surface in the central portion of the link. The contact surfaces extend between an origin at the outer periphery of the link and close to a transverse axis thereof, and a termination at the inner periphery of one of the loops. The contact surfaces consist of a plurality of differently oriented surface sections and are so shaped as to form a plurality of intermeshing lug and recess means which effectively oppose tension stresses in the longitudinal direction and all stresses in the transverse directions, the latter ones particularly efficiently at the locations of said origins.

Abstract: The invention is a shifting mechanism for a screw press. The screw press includes a shifting coupling for the press spindle, a drive mechanism for continuously rotating a flywheel, a coupling mechanism operatively located between the flywheel and the shifting mechanism which is dependent upon angular deceleration and is controlled for the purpose of actuating the coupling mechanism. The shifting mechanism comprises a hydraulically actuatable shifting coupling. A hydraulically prestressed valve is located between the reaction mass and a rotating coupling portion that is connected to the flywheel. The coupling mechanism is controlled through the use of a hydraulic line and the prestressed valve is affected by the hydraulic pressure medium in that line acting upon the coupling mechanism.

Abstract: Low quality, low density woods are densified to form wood products having the characteristics of high quality natural hardwoods. A green solid wood member having a high moisture content is impregnated with anhydrous ammonia to plasticize the wood into a sponge-like form saturated with water and ammonia. This plasticized wood member is placed between press plates of a cyclic press and, while maintaining the temperature of the wood below 100.degree. C., it is subjected to a plurality of low pressure compression cycles each of about 1/2 to 1 minute duration with the wood being compressed to a predetermined thickness of up to 50% less than its original thickness. It is held at the reduced thickness for a short time and released during each cycle, whereby water and ammonia are squeezed out of the wood down to a moisture content of less than about 30%. The damp wood member of reduced thickness thus obtained is then dried to obtain a kiln dried, densified solid wood product.

Abstract: A device is described which is meant to control the opening and closing of the metal bar sliding guides in a multiple-spindle lathe feeding equipment.Each sliding guide consists of two parts, a fixed one and a mobile one, and the device to open and close them is mainly made up of a locking pin integral with the fixed guide part, the releasing of which allows a mobile element to control the turning of a shaft with which the mobile guide part is integral.

Abstract: An apparatus for removing carton blanks, erecting and transferring cartons to a conveyor apparatus which includes a magazine for cartons and a rotor with a plurality of radially offstanding suction units. To attain a high output with an apparatus which is simple in structure, the rotor is disposed on a pivotable arm. On each pivoting movement of the rotor during one operating cycle, a carton blank is removed from the magazine while simultaneously formed carton is inserted into the conveyor apparatus at a transfer station. A counterpart suction device, which is associated with a station between the magazine and the transfer station, erects the cartons and breaks them on themselves.

Abstract: In an apparatus for making plastics carrier bags from a web of tubular film of thermoplastic material, a feeding mechanism intermittently conveys the webs by one bag width and a severing mechanism cuts the web into half tubes along an undulating curve. A carriage displaceable in the machine frame transversely to the feeding direction of the web is reciprocated by a drive derived from a first rotating control cam through gearing. A cutting knife pivotable in the carriage about its longitudinal axis passes through the plane of the tube about an axis perpendicular thereto and is so controlled by an oscillating drive derived from a second rotating control cam that its edge is substantially tangential to the undulating curve at the cutting point. A detour assembly retards one of the half tubes to bring the bag side edge zones into phase and each half tube is formed into bags by a transverse sever-sealing device.

Abstract: An improved shot peening machine is of the type which includes blast wheels capable of propelling a plurality of shot generally downwardly into a critical blast region of the machine for shot peening a plurality of springs passing therethrough. The improvement includes a housing for the machine including a blast cabinet, an entrance chamber and an exit chamber. The blast cabinet generally defines the critical blast region. Horizontally extending spinner rolls for the springs extend through the blast cabinet and terminate at a first end at a first edge of the critical blast region within the entrance chamber and a second end at a second edge of the critical blast region within the exit chamber. The springs are conveyed along a peening path on the spinner rolls from the first end to the second end thereof. A feeding system feeds the springs from an exterior of the housing into the entrance chamber to supply the springs to the first end of the spinner rolls.

Abstract: A process and a device for feeding a machine for welding mesh with weft wires. A sheet of parallel warp wires is moved towards a welding station, as are weft wires which have been cut to length. The warp and weft wires are moved forward in substantially the same direction and the weft wires undergo a change in direction to the extent that the weft wires run in a direction which is substantially perpendicular to the warp wires when said weft wires reach them.

Abstract: A sintered polycrystalline diamond compact having an integral metallic heat sink bonded to and covering at least the outer diamond surface is used to increase compact life when the compact is used for material removal without a fluid coolant.

Abstract: An improved packing container forming apparatus is disclosed. In the arbor turret type packing container forming apparatus, the improvement comprising a plurality of arbors arranged in tandem on a rotary packing drum in the axial direction, an aluminum foil suction ring for forming an aluminum bag with its one end closed in combination with the corresponding arbor by winding a sheet of aluminum foil around the arbor in the first rotary row, a package paper suction ring for forming a package paper bag with its one end closed in combination with the corresponding arbor by winding a sheet of package paper around the arbor in the second rotary row, and a shifting mechanism including a pair of racks and a pinion for shifting the arbors in the first rotary row to the second rotary row in a consecutive manner.

Abstract: A portable blind fastener installation tool having an installation section actuable for setting the blind fastener and a fastener loading section for automatically front, loading the fastener into the installation section and a piston-valve section for reciprocating the installation section away from and back to its fastener setting position after a fastener has been set to permit the fastener loading section to be moved to a position in front of the installation section while it is away from its fastener setting position whereby the next fastener will be front loaded into the installation section on its movement back to its fastener setting position.

Abstract: A press comprises a frame made up of two crossheads rigidly interconnected y means of uprights with two rams mounted therebetween one above the other. One of the rams has a built-in nut with a non-self-stopping thread to be thereby engaged with a screw rigidly connected to a die holder mounted for rotation in the other ram and geared to a drive for its translatory motion. Forced interaction between the nut and the screw is effected through a drive provided to actuate the ram with the nut and controlled from the drive of the die holder. There is provided a clearance of sufficient size between the rams to permit a specified angle of rotation of the die holder.

Abstract: A mill and a method for rolling flat workpieces of great width such as metallic strip, plates and the like. The mill comprises upper and lower housing beams joined at their ends by pairs of channels defining windows in which chocks are slidably mounted. Upper and lower work rolls are mounted in the chocks to maintain the work rolls in the vertical plane of symmetry of the mill. Each work roll is provided with a plurality of pressure transmitting elements evenly spaced therealong and contacting a part of the periphery of the work roll. The set of pressure transmitting elements for the upper work roll is operatively affixed to the upper housing beam and the set of pressure transmitting elements for the lower work roll is operatively affixed to the lower housing beam. The pressure transmitting elements of at least one of the sets are each provided with a fluid pressure actuator by which the pressure exerted by that pressure transmitting element on its respective work roll can be rapidly increased or decreased.

Abstract: A thermoplastic bag structure comprising a front and rear bag wall, a bottom and an open mouth top portion, said open mouth portion being characterized by having two pairs of single film handle loops each of which are located at opposite ends of said open mouth portion, the handles of each pair being side-by-side and each handle is an integral single film loop extension of said front and rear bag walls. The bag structures can be unitized by providing a detachable tab at the bag mouth opening and unitizing the bag structures through this tab. The method of forming said bags involves providing an end sealed collapsed thermoplastic film tube and removing plastic to form a bag mouth opening and handles at one end thereof. The resulting bag is an ungussetted bag which can be unitized into a pack by providing a detachable, unitizing tab at the bag mouth opening.

Abstract: A piping assembly suitable for cooling a roller section in a secondary cooling zone of a continuous casting line, the roller section having a number of cast strip guide rollers mounted on a support frame through bearing boxes, wherein the piping system includes cooling water passages provided within the frame of the roller section and cooling water circulating ports formed in the wall of the frame and disconnectibly connected to cooling water passages in the bearing boxes and guide rollers.

Abstract: A cutting insert and, in one embodiment, a grooving cutter, is formed so that multiple cutting edges are disposed in the cutting path. Rectangular cutting inserts and radial cutting inserts are contemplated. The rectangular shape is most suited for small tools and equally so for internal applications. Multiple radial cutting inserts can be mounted equally radially disposed, but differently angularly disposed from each other, for providing a grooving cutter. The cutting inserts and tool assemblies thereof may be used for OD grooving, threading, relieving, trepanning, face grooving, slotting and milling.

Abstract: A dual spindle assembly is provided which has a hollow outer member having an inner member rotatably and eccentrically mounted therein. The inner spindle member has a mounting hole defined eccentrically in one end for engaging a cutting tool. In order to make possible a continuous change in the radius of revolution of the cutting tool about the axis of the outer spindle member, a plurality of worms extend parallel to the spindle assembly and are geared to one another for joint rotation. Ball nuts on the worms travel back and forth along the same with the bidirectional rotation thereof. Rigidly interconnecting the ball nuts, a connector surrounds the spindle assembly via a ring rotatably mounted therein. The ring has an inward projection making threaded engagement with the inner spindle member through a slot cut longitudinally in the outer spindle member. The linear travel of the ring with the ball nuts results in the rotation of the inner spindle member relative to the outer.

Abstract: A precision machining system for machining a workpiece into a desired surface with two tool driving units. A first drive unit moves the tool along at least two axes to shape the workpiece similar to a desired surface. A second drive unit moves the tool along one of the axes in a very finely controlled manner. A measuring unit measures the tool position with an accuracy higher than that to which the first drive unit can respond. A signal producing unit is responsive to the measuring unit for producing a control signal for controlling the operation of the second drive unit while the first drive unit is operating.

Abstract: A veneer lathe apparatus is described with a powered nose bar roll of large diameter that is capable of peeling logs down to an extremely small core diameter on the order of about 21/2 inches for soft wood. The large diameter nose bar roll prevents jam-up of wood chips and trash at the junction between such roll and the log and greatly increases cutting time between lathe knife sharpenings. Both ends of the nose bar roll are connected through flexible couplings of plastic to the output shafts of two separate drive motors. The nose bar roll may be provided with a grooved outer surface for greater friction and can apply up to 40 percent of the total torque required for rotation of the log and to pressure the log for compression of its surface in front of the lathe knife during peeling. The nose bar roll is of larger diameter than the minimum log core and preferably such diameter is at least fifteen times the thickness of the wood veneer being peeled.

Abstract: A die is clamped to the bolster plate of a press by means of clamps around the sides of the die. Each clamp is operated by a rotatable shaft which extends from the clamp to the front side of the press. The operating shafts for the clamps at the rear side of the die are disposed below the die.