Abstract: A waste material shredder having a pair of counter-rotating cutter rollers with mutually meshing cutter disks mounted thereon, and fixed spacer members separating the cutter disks. Sheets of waste material are shredded into small chips by the action of sharp protruding teeth on the cutter disks which punch transverse slits and by subsequent shearing action between adjacent opposing cutter disks. Jamming of the shredder due to build-up of chips between the spacers is eliminated by a special configuration of the cutter disks, with chip clearance protrusions being formed between the teeth which act to completely remove the cut chips from the shredder, thereby overcoming a basic problem with prior art "cross-cut" type shredders.

Abstract: A method of fabricating a rotor hub of a fully articulated helicoper rotor system, the rotor hub including a central portion and at least two pairs of lug arms extending therefrom, according to which composite material is dispensed onto the mandrel and wound about a pair of lug arms and an associated part of the central portion of the mandrel to form a continuous closed loop of the composite material to a desired width and thickness. The winding is repeated for each pair of lug arms and its associated part of the central portion of the mandrel so that as many loops of composite material are formed as there are lug pairs. The finally assembled loops are cured to structuralize the loops.

Abstract: This invention concerns a process for changing electric lines, especially for cutting a line to length and equipping cut line segments with electric connectors especially in an automatic cable finishing machine with lateral transport of the cut line segments with endless belts, where several different lines each unwound from a cable drum are stored on an arc of a circle, so they are parallel to each other with a certain distance apart and they are pivoted together on the arc of the circle for the purpose of changing the lines until a predetermined line is positioned at the culmination point of the arc. This invention also concerns a device for carrying out this process, characterized by a line storage device with support points for lines arranged on an arc extending across the transport direction of a line that is to be cut and arranged so they are spaced a certain distance apart, where the storage device is mounted so it can be pivoted back and forth in the direction of the arc.

Abstract: A method is provided for removing contaminating minerals from coal by true heavy-liquid media. The coal is comminuted to liberate a substantial portion of the minerals from the coal, the method comprising forming a slurry of the comminuted coal in a solution of smelter-grade sulfuric acid of specific gravity ranging from about 1.2 to 1.7, the specific gravity of the sulfuric acid solution selected being greater than that for the liberated coal but less than that of the contaminating mineral to be separated, thereby effecting substantial separation between the liberated coal and the contained minerals. The coal is removed from the solution and then washed to remove occluded acid therefrom.

Abstract: A plain bearing comprises a metal cylinder as an external member and a resinous cylinder as an internal member, in which the outer surface of the resinous cylinder is firmly engaged and bitten with a concavo-convex portion formed on the inner surface of the metal cylinder. A process for manufacturing the plain bearing comprises producing the metal cylinder, forming the concavo-convex portion on the inner surface of the metal cylinder, combining the concavo-convex portion of the metal cylinder with the resinous cylinder, inserting a core pin into the interior of a combined cylinder of the metal cylinder and the resinous cylinder, squeezing the combined cylinder through a draw die and producing a finished plain bearing.

Abstract: Centering strips, pluggable onto the contact blades of a wiring backpanel for receiving cable plugs, are provided with fastening disks in the region of openings in the floor of the centering strips through which the contact blades project into the centering strip, the fastening disk likewise including openings for plugging the contact blades therethrough. After the centering strip has been plugged, the fastening disks are located such that their inner edges of their openings cut into the contact blades and their outer edges cut into the floor of the centering strip. A positive fixing between contact blade, fastening disk and centering strip is thereby achieved.

Abstract: A dynamoelectric machine including a brush holder having a displaceable section for positioning the brushes in a mounting position is disclosed. The displaceable section is located to secure the brushes in a mounting position and said displaceable section being separated during assembly to allow the brushes to be displaced inwardly to engage the commutator in the final assembled position. Several embodiments of displaceable sections are disclosed.

Abstract: An automatic pneumatically powered crimping hand tool for making electrical connections is devised by advancing a bandoleer of contact carriers, each contact carrier including a contact, to align one of the contact carriers and contacts in an ejectable position within the tool. Once in the ejectable position, a pneumatically powered ejection pin is then longitudinally advanced into the contact carrier to eject the contact from the contact carrier into a crimping position. Once the contact is placed within the tool in a crimping position, the wire is then manually placed within the contact. The depression of a trigger automatically and serially activates the advancement of the contact carrier and ejection of the contact and then to drive four indentor pins into the electrical contact. The contact is mechanically deformed about the wire. The operation may then be repeated on the next serially connected contact within the bandoleer of contacts.

Abstract: A solder preform and technique for making same is disclosed for use in a one time flux process for attaching electronic modules to printed circuit substrates via plated through holes or surface mount pads.

Abstract: An annular seat member is supported between an annular base member and a load receiving member. The seat member is tapered toward its upper end and projects into an inverted V-shaped recess in the load receiving member. The tapered surfaces of the seat member have a plurality of annular grooves. Inserts are mounted in projecting relation from these grooves and are formed of a material which provides a long wearing bearing surface with the metal of the load receiving member.

Abstract: In an apparatus for securing parts to an assembly body, a part conveyor means receives a plurality of parts arranged on a lot basis from a part storage. The part conveyor means is moved by the arm of the apparatus for driving parts up to the proximity of the assembly body. Since the arm of the apparatus for securing parts is equipped with a part securing means, the part securing means receives the parts from the part conveyor means individually a plurality of times and secures the parts to the assembly body.

Abstract: A wire length having a very small diameter is terminated to a contact member by forming a groove in the contact member, disposing the wire length entirely within and along the groove, and striking the surface of the contact on both sides of the groove deforming the sides of the groove downwardly and inwardly into the groove firmly against the wire therein. The contact members can be made in lead frames on a carrier strip and have grooves formed therein, the wire can be placed in the grooves and terminated to the contact members in an automated assembly to make, for example, fuse components where wire segments bridge gaps between associated contact sections of pairs of the contact members, and the lead frames can have housings molded thereto while on the carrier strip.

Abstract: For breaking up fluorescent lamp tubes and other frangible articles, a plunger is reciprocated vertically by a manually operated crankshaft on a stand. An elongated tubular guide extends out from the stand and may be raised to an inclined position to feed the lamp tube by gravity beneath the plunger. This guide has top and bottom openings which register respectively with the bottom of a guide sleeve for the vertically reciprocable plunger and the top of an inverted funnel-shaped housing for guiding the broken fragments into a bag suspended from this housing.

Abstract: A method for making endless lengths of nylon coated metal tubing which coating has high mechanical strength characteristics and a low gloss surface finish. The method includes passing the formed tubing through a first powder coating region and applying a layer of nylon generally uniformly surrounding the circumference of the tubing. This first nylon powder coating is heated sufficiently to cause the nylon coating to achieve complete melt-flow into a continuous first nylon coating region which would have a relatively high gloss. The coated tubing is next passed through a second powder coating region with the surface temperature of the first coating still above the melting temperature of the nylon. At this second coating region a second powder coating of the same type of nylon is applied. The second coating is cooled below the melting point of the nylon before the second coating completely melts leaving the outer surface with a very low gloss surface finish.

Abstract: A method of joining metallic layers of foil is disclosed. The layers of foil are spaced apart from each other a desired distance. A metallic component disposed between the layers of foil is in selective contact with each of them. The metallic component is selected to be in the semi-solid condition at a desired processing temperature. The assembly is heated to the processing temperature. The the assembly is cooled so that the metallic component is bonded to the metallic layers of foil.

Abstract: A tool for inserting sleeve blanks in damaged steam-generator tubes of light weight capable of being manipulated by ROSA, a remotely operated service arm. ROSA permits the tool to be attached externally of the channel head of the steam generator.The tool includes a fixed gripper and a moveable gripper. The gripping member of each gripper is a flexible sheet or bladder which conforms readily to the surface being engaged. For insertion, the sleeve blank is mounted on a mandrel. The insertion is carried out by operating the grippers repeatedly through the following cycle until the sleeve blank is inserted into the damaged tube:(a) The moveable gripper is set in the lowermost position.(b) The fixed gripper is open.(c) The moveable gripper engages the sleeving assembly.(d) The moveable gripper raises the sleeving assembly to the uppermost position.(e) The sleeving assembly is engaged by the fixed gripper.(f) The moveable gripper is disengaged from the sleeving assembly.

Abstract: A hand tool (10) for loading semiconductor chip carriers (30) from a supply magazine (32) into respective sockets (200) for connection to electronic circuitry is disclosed. The hand tool (10) has a loading channel (114) at the front of the load head (110) through which each chip carrier (30) passes as they are loaded into the socket (200). In order to facilitate the loading of each chip carrier (30), admitting slots (162) are provided in the walls of the loading channel (114). The admitting slots (114) are dimensioned to correspond to spaces provided between individual terminals (34) of the chip carrier (30), so that as each chip carrier (30) is loaded from the supply magazine (32) into the socket (200), the admitting slots (162) cooperate with the terminals (34) of the chip carrier (30) to insure that the chip carrier (30) will be precisely positioned in the socket (200).

Abstract: The present invention involves a method and apparatus for sequencing leadless and leaded surface mountable components, feeding them directly from a sequencer to chip placement heads, and placing them at selected locations on a circuit board. The chip carriers of an endless chain conveyor carry each component of the sequence of components to a chip placement head. Direct supply from a sequencer having the chip carriers and a series of individual programmably controlled dispenser heads provides for quick and flexible variation of the input sequence without manual intervention. A plurality of the chip placement heads are mounted on a turret assembly to facilitate continuous unloading of the chip carriers and orienting, centering, and squaring of the components prior to placement on a circuit board.

Abstract: A repair station located at the insertion head of an electrical component assembly machine, the repair station permitting the testing and placement of components into the sequence of components to be inserted into printed circuit boards.

Abstract: An apparatus for tension expanding a plate fin heat exchanger to provide a heat exchanger with bells of the same form and dimension and then expanding the tube into contact with the tube sheets and hairpin tubes while the bells are clamped to prevent the hairpin tubes from moving.