baber/WOPTO huggingface dataset:
Patent GB-2134565-A (GB)
Title: Self propelled ditch cleaner
Inventor: YOUNG CYRIL
IPC: E02F5/28
Filed: 1984-01-30
Abstract: A self propelled ditch cleaner for operation within a ditch comprising a working unit (41) and a power unit (40) in which the power unit drives a cutter (1) on the working unit and a winch (29) for pulling the machine along the ditch. The operator is carried on the machine which is operable in ditches having adjacent hedges and like obstacles. In the described embodiment the two units are articulatably connected in a manner providing controllable variation of their positional relationship in order to enable easier passage of the machine in traversing the ditch. Also controllable are the height of the cutter and the lateral support of the working unit. <IMAGE>
Patent GB-2139010-A (GB)
Title: Microwave waveguide switch assembly
Inventor: NELSON VICTON H
IPC: H01P1/12
Filed: 1984-02-07
Abstract: A microwave waveguide 4-port, 2-way switch comprises a housing having four ports 38 and a cylindrical chamber for housing a rotor 27 having surfaces which, together with the internal surfaces of the chamber, provide coupling passages between selected adjacent pairs of ports. The rotor has a 90 DEG  arcuate extension rotating in a 180 DEG arcuate aperture in an end of the housing to limit rotation to 90 DEG between two positions. Alternatively, a third position may be selected in which two opposite ports are coupled by a passage running the length of the rotor. The housing has corner cutouts to reduce its weight. <IMAGE>
Patent GB-2157263-A (GB)
Title: Cable holder
Inventor: COX ALAN WALTER
IPC: B65H75/40
Filed: 1984-02-16
Abstract: A holder for a length of electric power cable comprises a body portion of open framework construction. At both ends of the body portion open ended pockets are formed between a centre prong (1) and adjacent outer prongs (2). The holder is held by a handle (10) located between the ends and within the confines of the body portion.   <IMAGE>
Patent GB-2138038-A (GB)
Title: Process for producing coated elastic yarns
Inventor: ROSSI EUGENO
IPC: D02G3/40
Filed: 1984-02-22
Abstract: A process for producing elastic yarns, wherein a covering or coating step is carried out by a flocculating operation and causing a predetermined amount of flocks to adhere on the surface of natural and/or synthetic elastomer thread after suitable preparation of the elastomer thread surface for sufficient adhesion to the flocks, optionally followed by a thermal and/or chemical and/or pneumatic treatment for final adhesion and attachment of the flocks to the elastomer surface.
Patent GB-2139563-A (GB)
Title: Daisy wheel for typewriters
Inventor: MEISNER OLAF
IPC: B41J1/30
Filed: 1984-03-06
Abstract: A daisy wheel for typewriters or the like makes use of a retaining stud (5) which is connected to a hub body (1) by ultrasonic welding and is made of the same material as the hub body. The stud has a recess (6) for a drive shaft, this recess being limited by radially resilient webs (8) which extend in the axial direction of the drive shaft and form clamping surfaces (9) for the latter. <IMAGE>
Patent GB-2137720-A (GB)
Title: Pipe replacement
Inventor: DALY PATRICK NOEL
IPC: F16L55/165
Filed: 1984-03-30
Abstract: An existing pipe 11, for example a gas main, is fractured by moving through it a mole 10 including a reciprocable pneumatic hammer 13 which tows a new pipe 31. The hammer drives the mole and moves plunger 20 to move outwards pivoted elements 26 which fracture the pipe 11. Rollers also engage the pipe to fracture the pipe. The elements 26 may be omitted. Grout may be supplied through passage 53 to the exterior of the new pipe. A valve may be included in the supply line to the hammer, and may be closed to build up pressure and then opened to produce extra forward impact if the mole is stuck. <IMAGE>
Patent GB-2142566-A (GB)
Title: Screw fasteners
Inventor: GALBRAITH JOHN
IPC: F16B23/00
Filed: 1984-05-23
Abstract: A screw has a head with a recess 1 of equilateral triangular cross-section having rounded apexes and flat sides parallel to the axes of the screw to eliminate cam-out. The driving tool 6 has a substantially identical prismatic shape, with minimal clearance in the recess throughout its circumference. <IMAGE>
Patent GB-2159669-A (GB)
Title: Installation of communications cables
Inventor: GALE JOHN CHRISTOPHER
IPC: H02G9/06
Filed: 1984-05-29
Abstract: Apparatus for installing a feeder cable 2 (or a duct therefor) and drop cables (or draw lines therefor 28 Fig. 4) in an underground pipe system consisting of a main pipe having side-connecting pipes (Figs. 1 to 3). The apparatus comprises a series of machines for passing successively through the main pipe and arranged to drill holes at intervals, to fix clips 30 into these holes by pushing an interference- fitting projecting pin 33 of each clip into its hole (Figs. 6 to 8), to bend or form successive lengths of the feeder cable to the required path (Figs. 9 & 10), to engage the feeder cable with the successive clips, to catch the ends of drop cables which have been run through the side-connecting pipes to project into the main pipe, to pull these collected drop cables along the main pipe to a required destination, and to install a metal mesh cover strip 40 over the installed feeder cable and the drop cables which run alongside it (Figs. 11 to 14). The cover strip 40 comprises a flattened tube with reinforcing wires 41 made from a knitted mesh of metal wires. <IMAGE>
Patent GB-2141652-A (GB)
Title: Method of spin-flanging a hollow, thin walled cylinder
Inventor: AZZALINE PAUL H
IPC: B21D19/06
Filed: 1984-06-28
Abstract: A spin flanger, for flanging a necked-in can body (A) has an axially and rotationally movable head (20) provided with a freely- movable pilot (30) for entering a pre-formed neck to align the can body (A) with the spin head (20). Spin-forming rollers (27), mounted on the periphery of the head, are rotatable on axes normal to the head rotation axis and each has a rim and body portion with meeting surfaces making an included angle of e.g. 120 DEG , the rim in use initially flares the end edge of the can body and the body portion (which extends substantially normally to the head rotation axis) completes the spin-formed flange. The head is cammed towards the can body and spin forming is accomplished while the head is moved by the cam at constant velocity. <IMAGE>
Patent GB-2142885-A (GB)
Title: Tyre tread
Inventor: OTT ERNST
IPC: B60C11/13
Filed: 1984-07-04
Abstract: A tyre tread is described, particularly for use on commercial vehicles, which can be used as a winter pattern and which also has a high mileage capacity. For this purpose, a central row (5) of blocks (10) having a mutually interlocking arrangement is provided adjacent to which are disposed side rows (6) of blocks, separated from the central row by continuous grooves (18) of meandering form, which are also arranged in an interlock arrangement with each other and with the blocks in the central row. in addition, connecting webs (13), with transverse slots (14), are provided between the successive blocks in the central row on the one hand and between successive pairs of blocks in the side rows on the other, on a level which is lower than the surface of the blocks. <IMAGE>
Patent GB-2163969-A (GB)
Title: Exhaust filter for internal combustion engines
Inventor: MACTAGGART GRAHAM STEWART
IPC: F01N13/08
Filed: 1984-07-27
Abstract: An exhaust gas filter is attached to an I.C. engine exhaust system by its inlet 16 and comprises at least one filter element 27, 32 made of foam rubber or plastics which is compressed in a direction transverse to the gas flow therethrough to close up the pores in the foam. In Figure 1 the tubular element 32 is axially compressed by a movable flange 38. In Figure 2 (not shown) the axial flow filter disc is compressed radially. Wire gauze 22 prevents flames from reaching the filter elements. <IMAGE>
Patent GB-2148899-A (GB)
Title: Preparing steroids in microparticulate form
Inventor: RILEY DEREK CHARLES
IPC: C07J71/00
Filed: 1984-10-29
Abstract: The present invention relates to a method of preparing steroid compounds in a form having a particle size within a desired and specific range. 
<??>The compounds prepared by the method of the invention are those having a basic ring structure of the general formula: 
<CHEM>
 wherein X represents the remainder of a heterocyclic ring, in particular a 5-membered ring having at least 2 heteroatoms, and the method comprises dissolving the compound in an organic solvent, precipitating the compound by mixing a non-solvent for the compound with the said solution, and controlling the mixing conditions to produce a precipitate having the desired reduced particle size.
Patent GB-2158440-A (GB)
Title: 4,5,6,7-Tetrahydroimidazo[4,5-c]pyridine derivatives
Inventor: SCARPONI UGO
IPC: A61P31/12
Filed: 1985-06-06
Abstract: This invention relates to a 4,5,6,7-tetrahydroimidazo[4,5c]pyrimidine derivative of general formula (I):   <IMAGE>  wherein -R1, which is bonded to the nitrogen atom in the 1- or 3-position, is a hydrogen atom; a linear or branched C1-C4 alkyl or C2-C4 alkenyl group; or a benzyl group optionally substituted by one or two substituents selected from a) C1-C4 alkoxy, b) C1-C4 alkylthio, c) fluorine, d) chlorine, e) bromine, f) trifluoromethyl, g) nitro, and h) methylendioxy; -R2, R3 and R4 are independently hydrogen; a linear or branched C1-C4 alkyl or C2-C4 alkenyl group; a C3-C7 cycloalkyl group; a phenyl or benzyl group optionally substituted by one or two substituents selected from a) to h) as defined above; or R3 and R4, together with the the carbon atom to which they are attached, form a C3-C7 ring; -R6 and R7 are independently hydrogen; a linear or branched C1-C4 alkyl or C2-C4 alkenyl group; a C3-C7 cycloalkyl group; a phenyl or benzyl group optionally substituted by one or two substituents selected from a) to h) as defined above; an adamantyl or an adamantanemethyl group; or R6 and R7, together with the nitrogen atom to which they are attached, form a five-, six- or seven membered heterocyclic ring which may contain one or more other heteroatom selected from O and NR2 wherein R2 is as defined above; and  -R5 represents a group of formula   <IMAGE> wherein R2 is as defined above but is not a phenyl group when R5 is R2, and Y represents an oxygen or sulphur atom; to the pharmaceutically acceptable and addition salts thereof and to a process for their preparation. The compounds have anti-viral activity.
Patent GB-2164728-A (GB)
Title: Valve system
Inventor: FITZSIMMONDS KENNETH IAN
IPC: F04B43/073
Filed: 1985-08-02
Abstract: A valve comprises a valve housing containing inlet 32 and exhaust passages (62, not shown) and first and second flow passages 36, 36' for supplying pressurised fluid to and discharging exhaust from the operating chambers of a pump. A valve member 38 is movable within the valve housing to bring the inlet and the exhaust passages alternately into communication with each of the first and second flow passages. This member has recesses 92,92', 94,94' to conduct fluid, which recesses do not extend around the complete circumference and which are preferably flat-bottomed. <IMAGE>
Patent GB-2164909-A (GB)
Title: Garment sorting apparatus
Inventor: HOLLAND KEVIN CHARLES
IPC: G06K17/00
Filed: 1985-09-19
Abstract: Hangers loaded with garments move down input rail 15 one by one to input station B where they are loaded onto carriers 11 suspended, from an endless conveyor 10, which is moving in the direction indicated. The hangers are off-loaded from the carriers 11 onto appropriate output rails 21 to 26 at respective output stations C. The system is co- ordinated by an electronic processor 47 which has access to information on the number of units of distance along the conveyor 10 between the input station B and each output station C and counts the units of distance moved by the conveyor 10, e.g. as indicated by a pulsed signal from proximity switches 14 on drive wheel 13. The processor 47 receives information on the required output station destination of each garment, e.g. from a digital code keyed into keyboard 48, or a bar code read by laser scanner 19, and actuates an output device at the appropriate output station C to pick the hanger off the carrier 11 when it has moved the relevant number of distance units from the input station B. <IMAGE>
Patent GB-2187568-A (GB)
Title: Device for inspecting the eye
Inventor: YUNG SIMON
IPC: A45D42/00
Filed: 1986-01-31
Abstract: The device comprises an housing (2) upon which is mounted a concave mirror (4). A face rest (6) projects from the housing such that the distal end thereof is spaced from the mean plane of the mirror by a distance which, when the device is used with the face rest against the user's face locates the focal point of the mirror substantially at the user's eye. By manoeuvering the device with the rest against the user's face, the user can inspect his or her own eye and areas adjacent thereto by examination of the magnified image created by the mirror. The device may further include a lamp (10) for illuminating the eye under inspection, with means for directing light therefrom to the focal point of the mirror. <IMAGE>
Patent GB-2188666-A (GB)
Title: Staging
Inventor: THOMAS STAFFORD MUSTON
IPC: E04G1/15
Filed: 1986-04-02
Abstract: The staging comprises a planar deck member 3, e.g. of plywood supported directly by two, elongate support members 2. The support members are each in the form of a length of rectangular hollow section tubing e.g. extruded aluminium and are each secured to the underside of the deck member adjacent the longitudinal edges of the deck member, the deck member constituting the sole interconnection between the support members. The members may be secured by rivets, nuts and bolts or screws. The support members may have lateral flanges (8, Fig. 3) to increase contact area between deck and support. <IMAGE>
Patent GB-2196536-A (GB)
Title: Squash racket
Inventor: YOU CHIN-SAN
IPC: A63B49/02
Filed: 1986-07-21
Abstract: A squash racket comprises a curved frame 23 extending from, and integral with, the handle 12, and an independent head 11 which is attachable to, and detachable from, the curved frame 23. Should the head 11 be damaged by striking of the racket against the wall of a squash court, only the head 11 need be replaced and not the complete racket. <IMAGE>
Patent GB-2178977-A (GB)
Title: Three phase separator
Inventor: CHAMBERLAIN NEVILLE P
IPC: E21B43/34
Filed: 1985-11-20
Abstract: A separator for treating gas carrying entrained water and hydrocarbon liquid comprises a horizontal vessel (2) and a vertical vessel (7). Liquid level in the horizontal vessel is controlled so that the horizontal vessel is substantially filled with liquid. Gas with entrained liquid particles enters the vessel (7) via an inlet diffuser (10) which directs the inlet flow downwardly within the vessel (7). Gas and entrained liquid particles then flow upwardly past the diffuser (10) through an agglomerator (14) into a multicyclone bundle in which liquid and solid particles are removed. Within the horizontal vessel aqueous material separates to the bottom of the vessel and is removed via an outlet (16) whilst hydrocarbon material flows over a weir (17) and is removed via an outlet (15).
Patent GB-2184318-A (GB)
Title: Transferring photographs to video tape
Inventor: MOUSLEY SAMUEL DAVID
IPC: H04N1/21
Filed: 1986-10-28
Abstract: Apparatus for transferring photographs onto video tape comprises a video camera 30 for generating image signals for input to a digital memory store. The stored signals can be displayed on a television monitor 44 for order selection before transfer onto video tape. The camera is focussed on a projected image of the photograph, generated by optical arrangement 34, 36, 38, 40, so that background flaws are obviated. Consecutive photographs may be dissolved one into the other and captions and background music may be added prior to recording on standard format tape. The operator console provides for optical preview 8 of the photographs which are preferably negatives. <IMAGE>
Patent GB-2184831-A (GB)
Title: Radiation beam position sensor
Inventor: WARD BROOKE ARMITAGE
IPC: G01B11/27
Filed: 1986-12-12
Abstract: A radiation beam position sensor e.g. for a laser cutting/welding system comprises a mirror 2 having a symmetrical array of holes 3 so as to provide a spatial sample of a beam of radiation incident upon the mirror, a spatially-sensitive detector, e.g. a quadrant pyroelectric detector 5, positioned to receive radiation passing through the holes 3 and having its optical axis coincident with that of the mirror, a germanium lens 4 or other means for bringing the radiation to a focus on the detector, and means for providing an indication of the position of the radiation incident upon the detector. The detector may be connected in a feedback system to ensure that the beam remains centred on the axis of the detector. <IMAGE>
Patent GB-2275738-A (GB)
Title: Reducing combustion vibration
Inventor: WILLIAMS JOHN EIRWYN FFOWCS
IPC: F23M20/00
Filed: 1987-01-24
Abstract: Combustion induced vibrations, which are liable to be caused in a combustion chamber, are reduced by introducing a second burner (13) downstream of the main burner (12), so as to neutralise a standing wave set up in the combustion chamber due to the flame instability of the main burner. In the case of a gas turbine aeroengine (1), the second burner may be an auxiliary reheat combustor (13) having its own control unit (40) to selectively supply fuel to the auxiliary combustor when reheat buzz is likely to arise. <IMAGE>
Patent GB-2189415-A (GB)
Title: Chucks
Inventor: CHILD ROY EDWARD
IPC: B23B31/20
Filed: 1987-03-02
Abstract: A woodturning lathe chuck comprises a body 1 provided to be screwed onto the lathe headstock and being in threaded engagement with a ring member 6 which is rotatable about the rotational axis of the body. The ring member has a threaded conical surface which is provided for threaded engagement with a threaded conical surface of each of a plurality of collets 8, 9. Each collet 8, 9 has a threaded conical surface for engagement with the threaded conical surface of the ring member and an oppositely inclined conical surface 10, 11 co-operating with a conical surface of said body 12, whereby rotation of said ring member causes the collets to move both in a direction parallel to the rotational axis of said body and in directions substantially orthogonal thereto. The interface between the collets and the body is configured to provide compensation for changes in the fit of the collets with adjustment. <IMAGE>
Patent GB-2204021-A (GB)
Title: Stackable containers
Inventor: HOLLIDAY HUBERT JAMES
IPC: B65D21/02
Filed: 1987-04-28
Abstract: A container which is to be stacked on top of an indentical container has two opposed end walls 1, 2. Each end wall defines on upper projection 4 which is centrally located at the top of the upper part of the wall, there being a corresponding recess 5 formed in the lower part of each end wall. Each recess is bounded, on the side towards the interior of the container, by a depending web 6. Guide means 8 are formed on each end wall adjacent the upper projection 4 to guide an upper container into stacking engagement with a lower container. <IMAGE>
Patent GB-2192552-A (GB)
Title: Ring type puzzle
Inventor: WILLIAMS MARK EDWARD
IPC: A63F9/08
Filed: 1987-06-30
Abstract: A puzzle comprises a base (16), a least three pins (9-15) projecting upwardly from the base at respective points spaced apart along a line, and at least three rings (1-7), one for each pin, with each pin having a first portion engaged with the top of its pin and a diametrically opposite portion (1a-7a) resting on the base, with each ring except a first ring encircling the pin of the adjacent ring and having its said diametrically opposite portion lying below that adjacent ring. The puzzle further comprises an elongate loop member (8) and the object is to engage the loop with the rings such that the loop extends through all rings, encircling all the pins and lying below said first portion of each ring and over said diametrically opposite portion of each ring. To facilitate manufacture of the puzzle, each pin comprises a split-pin (as seen in Fig. 1) with the respective ring engaged in the eye, with a push-fit spring washer (18) applied to the opposite end of the pin under the base to retain it to the base. <IMAGE>
Patent GB-2195450-A (GB)
Title: Sensor
Inventor: WILLIAMS DAVID EDWARD
IPC: G01N27/02
Filed: 1987-09-14
Abstract: A sensor suitable for the detection of chemical species (e.g. biochemical species) includes a membrane having an ionophore such that gated ion transport may occur through the membrane. The membrane and/or the ionophore is/are such that a dynamic characteristic of conductance through the membrane may be modified when a species to be detected is present. Means are also provided for measuring a dynamic characteristic of conductance through the membrane. The sensor may be used to detect species at very low concentrations and finds application in immunoassay where antibodies are detected with an antigen as ionophore. The dynamic characteristic of conductance measured may be spectral power density, event frequency, auto-correlation function, signal variance, probability density function of current, static lifetime, frequency with which the conductance has a specified value and correlation function of level-crossing times.
Patent GB-2210138-A (GB)
Title: Valve apparatus and systems for pneumatic pressure control
Inventor: WELLER BRIAN ROBERT
IPC: G05D16/18
Filed: 1987-09-21
Abstract: Valve apparatus 10 comprises a valve closure member held against a knife edge seat 96, against the action of a spring, by a diaphragm operated detect mechanism. The valve apparatus 10 is used typically in a natural gas distribution network, including an active governor 106 and a pilot governor 110 in an auxiliary path 102. Computer generated electric signals 122 are converted to pneumatic signals by an electro-pneumatic interface 114 and fed to the pilot governor 110. Under fault conditions low pressure or excessive rate of fall of pressure in the main 100 causes a pressure differential across the diaphragm 36 of the apparatus 10. The diaphragm lifts to release a spring-loaded valve-operating member which separates the valve closure member from the seat 96. A pilot governor 170 then controls a valve closure member co-operating with a knife-edge 98 to over-ride the pilot governor 110. The differential across the diaphragm 36 is ensured by a restrictor 174 and pressure-limiting valve 172. A vessel 176 ensures adequate volume beneath the diaphragm 36. An alternative connection for the line 121 to the rail 102 is between the inspirator 112 and the upper limit pilot governor 128. <IMAGE>
Patent GB-2197115-A (GB)
Title: Electrical or optical cable
Inventor: EILENTROPP HEINZ
IPC: H01B13/00
Filed: 1987-10-21
Abstract: In a highly flexible cable with stretchable coverings (7; 10) made of insulating materials, at least the inner surface of a covering (10) is covered by a longitudinally-extending stretched and sintered film (11) made of a fluoropolymer e.g. PTFE. This improves the mobility and flexibility of the cable whilst reducing the stretchability of the covering. The film (11) is preferably stretched in one direction only up to 20 times its length before being sintered. This increases the porosity of the film which may be made more porous by perforating with needles. The outer conductor of the co-axial cable is made of wires (8) and glass-fibre threads (9). In another embodiment, a multiplicity of wires (1) are covered by a strip (2), netting (3), a sintered and stretched film of PTFE (5) and a cross-linked silicone rubber sheath (4). <IMAGE>