Abstract: An electrical connector is disclosed and has complementary receptacle and plug connector members, each member having a hollow shell containing a conventional insulating insert which houses electrical contacts. A rotatable coupling ring is carried by the plug and is engageable with the receptacle for mating the connector members and holding the contacts in electrical engagement. A radially deflectable detent leaf spring is carried on an inner circumferential portion of the coupling ring, and the leaf spring has a radially extending detent protrusion intermediate the ends thereof and engageable with an annular array of ratchet-type detent teeth on an outer circumferential portion of the connector plug. The leaf spring is comprised of a pair of superimposed leaf portions joined together integrally at adjacent ends thereof by an enlarged loop portion. The loop portion is positionable within an axially exposed mounting recess at one end of the coupling ring.

Abstract: An electrical connector including a telescoping barrel and shell arrangement with a coupling nut to draw them together so that a shell end surface abuts a shoulder on the barrel. Spring biased detents on the coupling nut engage corresponding cams on the shell to hold the shell tightly and securely against the shoulder. Contact and other wear due to vibration is thus minimized or eliminated.

Abstract: An electrical terminal block for a printed circuit has upper and lower rows of terminals in a stepped configuration, the terminals in the upper row being laterally offset relative to those in the lower row by half the width of a terminal. The front edges of the upper row terminals rest on the terminals of a bottom row, and retaining plates are provided at the ends of the rows. The terminals are all of the same type. If only a single lower row is provided the rear of the upper row can be supported on a supporting wall. Alternatively a second lower row can be provided.

Abstract: A self-aligning connector in which the corresponding male and female members are rotated into mating alignment by the conversion of axially directed force into rotational torque about the mating axis. The aligning feature resides in each member having a corresponding intermediate cylindrical body with an elongated, axial keying protrusion which extends by defined contour into a keyway on the opposite side of the cylindrical body. Misalignment of the connector members during mating causes the keying protrusions to strike the contours on the opposite cylindrical body obliquely so as to impart a torque until the keying protrusions, keyways and connector mating elements are properly oriented. Once oriented, the connector members translate along the mating axis to an engaged state in response to the continued application of axially directed force.

Abstract: A high current density cathode capable of operating at current densities of A/cm.sup.2 to 30A/cm.sup.2 in the temperature range of 900 degrees C. to 1125 degrees C. is prepared by machining a porous high purity tungsten pellet containing copper in its pores and also containing about 0.6 to 2 weight percent of an activator to the desired cathode shape without reducing the pores of the emitter pellet. The pellet is then fired at 1800 degrees C. in a non-oxidizing atmosphere to remove the copper filler material. The pellet is then impregnated with Ba.sub.5 Sr(WO.sub.6)2 at a temperature of 1900 degrees C. in a dry inert gas atmosphere and the impregnated emitter then fired in dry hydrogen atmosphere at about 1840 degrees C. for about 2.5 to 5 minutes.

Abstract: An electrical multi-way terminal block having pairs of terminal in upper and intermediate regions, each pair being interconnected by a conductive member and being accessible for connection of a conductor. A tool access passage for one of the intermediate region terminals, which is offset into the interior of the block, extends from the upper face of the block transversely past the conductive member interconnecting the upper pair of terminals and is insulated from the latter, avoiding obstruction by a conductor connected to the upper terminals.

Abstract: A gas panel fabrication method includes forming a first set of dielectrically coated parallel conductors on a glass plate, forming a metal spacer layer over the first conductors, oxidizing those areas of the metal spacer layer which are between the first conductors, forming a second set of dielectrically coated parallel conductors over the spacer layer in orthogonal relationship with the first conductors, etching the unoxidized areas of the spacer layer from between the second conductors, and forming a cover plate to hold an ionizable gas adjacent to the orthogonal conductors.

Abstract: A connector (100) in accordance with the present invention comprises a dielectric enclosure (102) having a plug receiving cavity (104) open to the front of the enclosure, and a wall (106) forming one wall of the cavity. The top wall includes an interior cavity surface (130), a front surface (124), and an exterior surface (134). On its front surface are a plurality of parallel first grooves (126) extending from associated orifices (128) to the cavity surface, and at least one second groove (132) extending from the exterior surface to the cavity surface, forming a groove end (136) open to the exterior surface (134). The second groove is for positioning a spare spring contact (242) carried by an adapter (200). Spaced flanges (140), projecting from the wall, define with the exterior surface an adapter-receiving channel (142). The channel includes latching slots (150) and guiding ribs (146) for snap-mounting the adapter.

Abstract: The disclosure is directed to an improved liner assembly for an ore grinding mill. The liner assembly is of the segmented type, comprising a first plurality of segments which are mounted directly to the shell of the mill, and a second plurality of segments each of which is secured to an associated first segment independently of the shell. The first segments are formed from material which is resistant to impact, and the second segments are made from material which is highly resistant to abrasion. As constructed, the second segments can be replaced after a period of wear from inside the mill, avoiding the necessity of replacing the first liner segments which requires working teams both inside and outside the mill. In one embodiment, the second segments are L-shaped and are secured to the first segments by nut and bolt assemblies that are generally aligned with the shell surface to resist shear forces.

Abstract: Interconnection between a large planar electronic printed circuit board and a plurality of relatively smaller electronic printed circuit cards is accomplished by connecting the planar board to an array board by means of elongated interposer connectors. The array board contains a plurality of positions which accommodate the plugging of electronic printed circuit cards and cables. A mechanical ejection system allows the planar board to be removed from the system without disturbing the cards, cables or the interposer connection to the array board.

Abstract: A roller mill of the sort with a pan turning about an upright axis, a driving system under the pan and rocking levers, pushing rollers against the pan, has a roller weighting system made up of a hydraulic cylinder, pulling the levers together, and joined with an air accumulator. The cylinder is turningly supported near its center of gravity in one of the levers.

Abstract: The disclosure is directed to an improved roll crusher comprising a central hub mounted on a rotatable shaft, a roll member carried by the hub in concentric relation thereto, and a pair of clamping rings for securing the components together. The roll member and hub have angular surfaces disposed in opposed relation to define a pair of annular, axially facing recesses having V-shaped sides. The clamping rings are constructed to fit into the recesses, each defining inner and outer circumferential surfaces which are angled to correspond to the angled surfaces of the hub and roll member. A plurality of equiangularly spaced bolts connect the clamping rings and hub, drawing the clamping rings toward each other to wedge the roll member radially outward relative to the hub. As a result, the roll member is fixed in a centered, balanced position relative to the hub. A plurality of lugs and lug receiving recesses cooperate to prevent relative rotation between the roll member and hub.

Abstract: An electron beam tube having a getter surface and an electrically heatable cathode whose heating power is less than 250 mW, is provided with a metal member and that member is supplied with heating power of 500 mW to 10 Watt to be heated temporarily to above temperature 800.degree. C., upon completion of evacuation of the tube and after production of the getter surface, to eliminate residual gas.

Abstract: A sealed through-connector in which an electrical connection passes through a hole (4) in a single or double wall made of a plastic material, said connector including a first annular seal ring which seals the annular zone of the orifice left free by the connection and being compressed axially. According to the invention, the connector is axially compressed by clamping means which are applied on either side of the wall (1) to two metal parts (9,10) which each have a surface substantially parallel to said wall (1), the distance between said surfaces and therefore the compression of the seal (8) being defined by the insertion of a metal distance member (5).Use: Storage batteries which use hard metal connection parts which melt at high temperatures, e.g. alkaline electrolyte storage batteries.

Abstract: Continuous scrap edge trimmings are fed from a sheet metal slitter into a scrap chopper incorporating a rotor shaft supporting axially spaced and circumferentially spaced elongated straight cutting bars each having a plurality of selectable straight cutting edges. Each rotary cutting bar revolves past a stationary straight cutting bar also having a plurality of selectable straight cutting edges, and each cutting edge is positioned at a compound angle relative to planes including the axis of the rotor to produce scissor-like shearing of each strip. Each stationary cutting bar is positioned adjacent a spring biased anvil and is supported with the anvil for remote adjustment relative to the path of the corresponding cutting bars on the rotor. Each edge trimming is fed into the cutting bars by a corresponding pair of feed rollers one of which is spring biased and the other of which is independently driven by a corresponding motor.

Abstract: A new and useful apparatus has been devised for grinding paper into cellulose fiber insulation in which a hammermill or rotary beater has a paper feed inlet which establishes a low pressure zone at the entrance to the hammermill housing whereby to encourage reverse flow of partially ground materials from the outer perimeter of the hammermill into the low pressure zone, the partially ground material tending to collect in the form of a vortex and to recombine with the main stream of material being supplied into the feed inlet. In this way any of the partially ground or shredded material not small enough to pass through a classification grid or screen at the discharge of the hammermill will continuously intermix with the main stream of material for continuous grinding to the desired size.

Abstract: This specification discloses an automobile terminal block for receiving fuses, and electrical connections to various electrical components of the automobile. The terminal block has a passage extending therethrough for receiving a fuse holder which is mounted within the terminal block. The fuse holder is adapted to receive the blade contact of a fuse thereby electrically connecting the fuse to the fuse holder. Typically, the fuse holder has a spring clip with two prongs spring biased against one another so that the blade can be resiliently secured between the two prongs. The terminal block includes an entry control ledge for guiding the blade contacts of the fuse toward the fuse holder. The entry control ledge extends from the sides of the passage in a position aligned with the spring clip so that the blade contact can be guided between the prongs of the spring clip and does not enter the region between the prongs and the walls of the passage.

Abstract: In a device and method for particulating conglomerated materials, and especially soil samples, a revolving drum is mounted for eccentric rotation about a vertical axis. A grating or screen comprises the cylindrical wall of the open ended drum. The materials to be worked are placed between the outer periphery of the drum and an arcuate wall mounted for pivotal movement with respect to the drum. The materials are then crowded by the movable wall into engagement with the grating of the revolving eccentric drum to break up the materials into particles of workable size. Hard matter, such as rocks or gravel, is segregated during the process. If desired, a row of fingers and/or a brush can be mounted for engagement with the drum to loosen accumulated materials from the drum during operation of the device.

Abstract: According to the present invention there is provided slurrying apparatus comprising a rotatable drum arranged for rotation about its longitudinal axis and including a slurrying chamber portion so arranged that when the drum is rotated feed material passes from an inlet of the slurrying chamber portion to a discharge chamber portion of the drum in which slurry and fine particles are separated from coarser particles and are discharged separately, and rotation means for causing rotation of the drum.

Abstract: A roller apron for a continuous casting installation, especially for casting steel strands, for supporting a partially solidified strand, which comprises a number of successive pairs of rolls which follow one another in the direction of travel of the strand. The bearings of at least one roll are arranged at a traverse or crosshead extending essentially parallel to the lengthwise axes of the rolls. The traverse can be applied against stops governing the format or cross-sectional thickness of the strand and coacting at both ends with pivotable levers articulated at the machine frame and at a movement device. The movement device comprises a power source interconnecting both of the pivotable levers.