Abstract: A lubrication system for a cutting machine such as a cloth cutting machine. The lubricant reservoir is provided within a housing portion so as to protect it from damage when the machine is laid on its side. An easily removable wicking module is provided with an end adjacent a reservoir outlet so that only a short feeder wick need be provided for transmission of lubricant into the module.

Abstract: A retaining structure for a plurality of pressurized gas cylinders arranged in rows includes a lower frame having inner cross members fixed to upright posts and respectively disposed between adjacent rows of cylinders, and outer cross members along the outside of the outermost rows, the cross members having threaded studs at their outer ends for threaded coupling to a pair of end channels to form a rigid frame. An upper frame include generally V-shaped upper cross members arranged with two of them longitudinally aligned between each two adjacent rows of cylinders and threadedly coupled to the upper ends of upright rods which project upwardly from the inner cross members of the lower frame for holding the upper and lower frames in spaced relationship and maintaining the upper cross members in camming engagement with the sloping top walls of adjacent cylinders to wedge the cylinders against the cross members of the lower frame. Each upper cross member may be coupled to one or two upright rods.

Abstract: An improved apparatus for varying the pressure within a screw channel which apparatus includes a shaft having a helical flight defining a channel between consecutive turns of the flight. The screw is rotatable within a barrel. A radially movable first member is disposed at a right angle to a longitudinal axis of the screw where the plasticated material has undergone partial melting. A reciprocatively movable second member is disposed within a bore through the shaft coaxial with the axis and includes a cam slidably engaged with an inner end of the first member such that the first member can be extended into the screw channel when the second member is moved in one direction and retracted from the channel when the second member is moved in another direction. At an upstream end of the second member there is provided a rotatable thrust transmitting coupling which allows rotation of the second member relative to a male threaded portion secured to the coupling and coaxial with the second member.

Abstract: Method and apparatus for treating ultrahigh molecular weight, high strength polyolefin to improve its adhesive bonding to a resin such as epoxy, vinyl ester, polyester, polyurethane, polyolefin or thermoplastic rubber are provided. The method includes the steps of soaking the polyolefin in a first solution comprising (i) an aromatic ketone photosensitizer, and (ii) a first solvent selected from the group consisting of a benzene derivative, an alkyl halide, and a cyclic alkane; removing any excess first solvent; coating the surface of the polyolefin with a second solution comprising (i) about 15 to 70 weight percent of a monomer independently selected from the aforementioned group, (ii) about 0.25 to 5 weight percent of an aromatic ketone photosensitizer, and (iii) about 25 to 84.

Abstract: A coupling between parts subject to differential expansion and contraction comprising first and second sealing abutments and an intervening constraint on relative movement whereby differential movements provide a self-compensating tightening and loosening of the sealing abutments. The coupling is especially useful for joining tubular parts such as caps or spray nozzles in containers for agricultural chemicals.

Abstract: A beam forming network employing a matrix of resistive coupling elements to link individual elements E.sub.1 to E.sub.n of an antenna to the different phase terminals 3, 4, 5 and 6 of a phase combiner. Because of unwanted coupling between the conductive members forming the matrix it has in some circumstances been found impossible to select values of the coupling elements to give a required beam pattern. The invention solves the problem by including phase shifters in alternate lines to the antenna elements. A separate matrix and phase combiner is provided for each beam to be formed.

Abstract: A hinge device particularly adapted for positioning a work surface in a vertical in-storage position or a horizontal in-use position comprises a first and a second arm. Each arm is defined by an elongated segment connecting with an angularly positioned short segment. An end of first arm short segment is pivotally attached to an upper end of a support member. An end of the first arm elongated segment in turn is pivotally attached to an outer part of the work surface. In the first arm elongated segment is a slot positioned inward from the end. An end of the elongated segment of the second arm is pivotally attached to a lower end of the support member. An end of the second arm short segment in turn is pivotally attached to an inner part of the work surface. In the second arm short segment is a recess defined in part by an inner support ledge.

Abstract: A closure is provided comprised of a thin flexible material for use on a needle disposal container so that a contaminated blood collection needle may be removed from its holder and deposited in the container without the user touching the needle or the needle hub. The device includes dual elongated tapered openings to accommodate varying diameters of needle hubs. By having dual openings, the useful life of the cap and its associated container is doubled. The cap of the invention is configured to be utilized with a large variety of collection containers of varying sizes and shapes. A feature of the invention includes chamfered surfaces at the enlarged end of each of the dual openings to provide a sharp edge which is useful for urging a needle hub out of its holder, without physically touching the needle or hub.

Abstract: A coupling between parts subject to differential expansion and contraction comprising first and second sealing abutments and an intervening constraint on relative movement whereby differential movements provide a self-compensating tightening and loosening of the sealing abutments. The coupling is especially useful for joining tubular parts such as caps or spray nozzles in containers for agricultural chemicals.

Abstract: A gamma ray scintillation camera generating (X,Y) spatial coordinate and Z energy signals relative to detected radiation events. The system provides for calibration of the camera Z signal response as a function of camera face location. The camera signals are converted to their digital equivalents subsequent to which the apparent coordinate locations of detected events as determined by the camera are corrected to their true spatial coordinates based upon correction information stored in the system.

Abstract: A device for suppressing transient surges in electrical power available from an electrical outlet is disclosed. The device is adapted for mounting on a back side portion of the electrical outlet. Surge protection components, such as planar varistors are disposed within an insulative housing block which forms the body of the device, and the device is physically mounted and electrically connected to the electrical outlet by mounting apparatus such as stiff metal leads.

Abstract: Apparatus for cutting sheet material such as cloth as the material lies on a supporting surface having opposite sides comprising an elongated track adapted to extend across the supporting surface between the sides, the track having an operative surface over which the sheet material lies during cutting thereof, and a cutter operatively associated with the track for movement in opposite directions along the track for cutting the material.

Abstract: This invention relates to a process for converting a C.sub.2 -C.sub.6 paraffin feedstock to aromatics over a gallium loaded zeolite catalyst. The feature of the invention is to bring the ethane in the feed with a fresh or freshly regenerated catalyst first and thereafter to bring the residual catalyst from this step into contact with the remainder of the C.sub.3 -C.sub.6 feedstock. The present process has the advantage of maximizing the yields of aromatics from a mixed feedstock using a single reactor and a single charge of catalyst.

Abstract: An expandable structure includes a hollow tubular frame having radially outwardly extending portions which define two longitudinally spaced-apart annular channels. Two segmented cylinders are respectively disposed in the channels, each cylinder comprising alternating long and short segments abutting along cam surfaces which lie in planes defining chords of the cylinders. Each long segment is biased inwardly by a spring which bears against the head of a stud which extends radially inwardly from the segment through a complementary opening in the frame. Pusher members are movable axially inside the frame for camming engagement with cam follower lugs which extend radially inwardly from the short segments through apertures in the frame. The pushers are slotted to accommodate the bias spring studs. Means is provided for rotating the frame about its axis.

Abstract: A contact arrangement for a semiconductor device (typically a GTO thyristor), in which a disc-shaped first connector electrically connects one region of the semiconductor element with its associated contact. The first connector having therein apertures through which pass resiliently-loaded electrical connections to a second region of the element, the surface of that second region lying below the surface(s) of the first region. The various parts of the device may be so shaped as to ensure correct relative positioning of the parts during assembly and the maintenance of that positioning during subsequent handling.

Abstract: A semiconductor housing particularly useful for very high current devices, e.g. transistors and G.T.O. thyristors, in which a control lead to the base or gate of the device, which also has to carry a relatively high current, passes through an insulating wall of the housing. This control lead is enclosed within a tube which passes through an insulating wall of the housing and which is hermetically sealed to it, the tube is also hermetically sealed to the conductor at either end. The coefficient of expansion of the tube is chosen so as to be substantially the same as the coefficient of expansion of the material of the insulating wall, which may be made of ceramic material or the like. The arrangement avoids corrosion effects as a result of the entrapment of plating salts etc. which are known to adversely affect the assembly and especially the electrical performance of the control lead connection.

Abstract: A deep bed filter of the type comprising an upright vessel of particulate filter medium, inlet means at the top of the vessel for introduction of an aqueous stream to be filtered, outlet means at the bottom for removal of filtered liquid and means for backwashing the medium by an upward flow of liquid, has as the filter medium bone char and sand, the bone char being located substantially above the sand. The sand generally comprises a particulate mineral filter material selected from silica sand, fused alumina, garnet, zircon, ilmenite and glass.

Abstract: A container having attached to it at least one memory device carrying information relating to the intended contents of the container; the device being operably connectable to apparatus responsive to information communicated from the memory device whereby an operation actively involving the contents of the container may be performed in a manner at least partly determined by the characteristics of the contents.

Abstract: An oscillator including an active device (38), a surface acoustic wave resonator (40) connected in a feedback relationship to the active device and an impedance matching circuit is disclosed. The impedance matching circuit in one arrangement is an output impedance matching circuit including an inductor (46) connected in the feedback loop to the output of the active device. In another arrangement, the impedance matching network is an input impedance matching network including an inductor (42) connected in the feedback loop to the input of the active device. In another arrangement of the invention, a varactor diode (60) is connected in the feedback loop and is controlled by a reverse voltage which changes the capacitance of the diode, adjusting the frequency of the oscillator.