baber/WOPTO huggingface dataset:
Patent GB-2091071-A (GB)
Title: Improvements relating to fish pens
IPC: A01K61/60
Filed: 1981-01-16
Abstract: A fish pen of polygonal suitably hexagonal, form is constructed from a number of flotation units (1) bolted together end to end into a frame. Each unit is of D-section with a glass reinforced plastics skin and a plastics foam filling, the flat part providing a deck (2). Sandwiched between the unit ends are plates (5) carrying stanchions (4) from which a net (6) is suspended within the frame. Guard rails (3) join the stanchions, and the coupling of the units may be made resilient by interposed washers (18). <IMAGE>
Patent GB-2068696-A (GB)
Title: Signal discriminating circuit
IPC: H04M1/654
Filed: 1981-01-22
Abstract: A circuit for discriminating between tone and speech signals applied to a telephone answering machine includes a squaring circuit 1 converting incoming signals into a train of pulses, each having a duration equal to that of the positive-going portion of a corresponding cycle of the signal. A period integrator 3 provides an output voltage whose magnitude increases each time a pulse is applied thereto, by an amount proportional to the duration of the pulse. A threshold detector 13 detects when the output voltage reaches a predetermined value. A period/voltage converter 5 generates a train of pulses each having a voltage Vn representing the period of a corresponding pulse from the squaring circuit. Pulses bVn from attenuator 17 are compared at 15 with previous pulses Vn{1, from sample store 21. If the incoming signal is a speech signal, bVn sometimes falls below Vn{1, and the output of the comparator provides a voltage for resetting the period integrator before the threshold voltage is reached. <IMAGE>
Patent GB-2066488-A (GB)
Title: A Heat-sink Imaging Method and Apparatus for Recording Surface Topology
IPC: B41M5/382
Filed: 1979-07-27
Abstract: Apparatus for recording surface topology comprises a transparent platform 30 supporting a heat sensitive film 9. A burst of light from a light source 34 below the platform heats the film to a critical value except at points where the film is provided with a heat sink by projecting surface features of a body such as a finger applied in the film on the platform. Where the film is heated to the critical value a permanent image is formed. <IMAGE>
Patent GB-2069798-A (GB)
Title: Coding and decoding of PAL colour television signals
IPC: H04N11/16
Filed: 1981-02-19
Abstract: A PAL decoder circuit 10 uses as part of the separator circuitry a delay 16 of an odd number of line periods substantially equal to either one field period or one picture period. Similar circuitry may be used as a prefilter in a PAL coder. For a 625 line PAL signal, a 313 line or 625 line delay can thus be employed. The delay is associated either with PAL modifier circuitry or with combining circuitry for adding and/or subtracting the input and output of the delay. Digital delay devices are preferred. <IMAGE>
Patent GB-2094758-A (GB)
Title: Liquid dispensing apparatus
IPC: B67D1/12
Filed: 1981-03-12
Abstract: An apparatus for dispensing liquid into a container 6 at a dispensing station in which two or more nozzles 3, 4 are arranged symmetrically around a central axis and are fed with liquid from a reservoir by a pump. The nozzles are inclined from the vertical so as to produce a swirling action as the liquid hits the bottom of the container. The apparatus is particularly suited to an in-cup dispensing station.   <IMAGE>
Patent GB-2078803-A (GB)
Title: Textile wet treatment apparatus
IPC: D06B3/28
Filed: 1981-03-26
Abstract: Container 1 includes cylindrical upright part 4 to the lower end of which connects a horizontal part 3 merging with an inclined cylindrical part 2 with the remote end of which connects a tube 9 leading from a mouth 8 below the take-off side of a drive roller 6 in the upper portion of the upright part 4. Annular tubes 14 of a heat exchanger are located in a downward extension 13 of the container part 4. Strand-form textile material 24 for treatment passes over the roller 6 and is entrained into the mouth 8 by way of liquor, supplied through nozzle head 21 from outlet of pump 19, impinging thereon. From the tube 9, the material enters the casing part 2, which contains liquor at a level, between the limits 22 and 23, selected in accordance with the material and its desired treatment whence it passes into a perforate insert 25 in the horizontal part 3 and thence up the upright part 4 back to the roller 6. <IMAGE>
Patent GB-2074729-A (GB)
Title: Liquid level
IPC: G01C9/34
Filed: 1981-04-07
Abstract: A liquid level comprises a body portion (10) of I-shape in transverse cross-section, and a sealed liquid containing chamber (11) the main part (15) of which is formed integrally with the body portion (10) and comprises reference walls (20-24) which are at 0 DEG , 180 DEG , 90 DEG , 45 DEG , and 30 DEG  respectively to a main planar datum face (15) of the body portion. Each of the chamber walls (20-24) is provided with graticules (40) with which the position of a bubble (29) in the chamber (11) can be compared. The chamber is closed by means of a separate cover (26). <IMAGE>
Patent GB-2076180-A (GB)
Title: Stage Lighting Control System
IPC: H05B37/02
Filed: 1981-04-08
Abstract: A stage lighting control system has a main processor unit and a portable desk controller with a local microprocessor (21) which scans the dimmer control contacts in the desk and transmits changed state control data to the main processor as an asynchronous serially coded signal on a low capacity link. This enables the controller to be conveniently located remote from the rack. Changed display data is developed by a V.D.U. interface in the main processor for transmission on the link as standard composite video to a V.D.U. (51). Output to the dimmers circuitry is through channel processors controlling groups of dimmers for data formatting. Lighting level information is recorded using a channel code. Patching means enable differing arrangements of dimmers circuitry to be controlled in accordance with the original record. <IMAGE>
Patent GB-2097458-A (GB)
Title: Window security fastener
IPC: E05B65/08
Filed: 1981-04-23
Abstract: Security means to retain a sliding frame type window or door in a partly open position but which is difficult for an intruder to tamper with wherein a latch pin (19) has a short leg (21) with respect to which a constraint member (26) can remove, but the short leg (21) can only be rotated away from the constraint member (26) when it is at that end of removement which corresponds to the frame being enclosed whereupon the latch pin (19) can be rotated about its long leg (20) which threadably engages a boss (23) secured to the track (15) of the frame. <IMAGE>
Patent GB-2101261-A (GB)
Title: Plugging and cutting a gas line without excavation
Inventor: MCGOWAN JOHN B
IPC: F16L55/12
Filed: 1981-07-10
Abstract: An underground pipe (10), such as a gas line is sealed at or near a point where it joins onto a main (12) by a radially expansible plug (24) which may be inserted in the line without the need to excavate to obtain access to the point of sealing. The plug comprises a thermally stabilized cross-linked preshrunk material e.g. polythene and is inserted into the pipe (10) on a heater (28). The plug may be inserted from a point where the pipe emerges from the earth. Once the plug, placed on the end of the heater is appropriately positioned by manipulating a flexible shaft (52), the heater is energized, causing the plug to radially expand, fitting it tightly inside the pipe (10) at or near the main (12). The heater (28) is then withdrawn, and the pipe (10) may thereafter be cut adjacent the inserted plug by inserting a powered cutting device on the end of a flexible shaft similar to the shaft (52). <IMAGE>
Patent GB-2086340-A (GB)
Title: Apparatus for Transferring Trays and the Like
IPC: B65G47/90
Filed: 1981-10-14
Abstract: Apparatus intended to transfer trays and the like in one direction or the other between a tray trolley and a conveyor, has a tray carrier (11) intended to carry trays (37) attached to a hoist body (9), which by a motor and an endless toothed belt or chain (18) can be lifted and lowered along a vertical column (6), the lower end of which is mounted in an attachment (5) on a vertical axle (21), which is supported rotatably in a carriage (4), which by a drive motor and a toothed belt or chain (34) is movable along a horizontal guide (2). Said vertical axle (21) includes a guide arm (25) guided in a horizontal guide groove (27), which includes a straight extension and preferably at one end a substantially quarter-circular extension, so that the tray carrier (11) by means of the guide arm (25) and the guide groove (27) in one end position for fetching or delivering trays is set substantially in parallel with the guide (2) and in its other end position is set at an angle of substantially 90 DEG  to the longitudinal direction of the guide (2). <IMAGE>
Patent GB-2107917-A (GB)
Title: Immobilisation of hazardous waste
Inventor: COPE CHAPMAN BRIAN
IPC: G21F9/30
Filed: 1981-10-20
Abstract: Hazardous waste, e.g. radioactive waste, particularly that containing caesium-137, is immobilised by mixing with cement and solidifiable organic polymeric material. When first mixed, the organic material is preferably liquid and at this time can be polymerisable or already polymerised. The hardening can result from cooling or further polymerisation e.g. cross linking. The organic material may be wax, or a polyester which may be unsaturated and cross-linkable by reaction with styrene.
Patent GB-2090098-A (GB)
Title: Optical Sensors
IPC: G01S3/782
Filed: 1981-10-29
Abstract: An optical sensor comprises a first reticle 33 placed in the aperture plane 34 of e.g. an optical telephoto lens 31 so as to produce an optical transform of a field of view at the image plane 36. A second complementary reticle 35 is placed in the image plane 36 and is viewed by an optical detector 38. The first reticle 33 is a quartz acousto-optic modulator electrically driven by a transducer to produce a travelling bulk wave in the quartz which phase modulates the incident light. The second reticle 35 is a picket fence light amplitude modulating reticle comprising uniformly alternating opaque and transparent regions. The sensor produces a modulation of the light seen by the detector 38 whenever it is illuminated by a coherent point source of light. <IMAGE>
Patent GB-2089072-A (GB)
Title: Phase locked loop motor control system
IPC: G03B27/52
Filed: 1981-11-19
Abstract: A phase locked loop motor control system, in particular for use for synchronising the operation of a carriage drive motor (1) and a main drive motor (2) in a photocopier (30), uses a digital frequency- and phase-comparator (10) and relies on the output pulses, used to power the slaved motor, being shaped so that each positive-going d.c. drive pulse is followed by a negative-going d.c. braking pulse of smaller amplitude (fig. 3), to provide positive registration of the slaved motor (1) with the pulsed driving signal. <IMAGE>
Patent GB-2110271-A (GB)
Title: Installing and connecting underwater flowlines
Inventor: LAWSON JOHN ERNEST
IPC: E21B43/013
Filed: 1981-11-27
Abstract: In installation of a flowline 60 and connection thereof to an underwater installation 1 equipped with guide lines 6 extending from the installation 1 to an operational base at the surface of the body of water, a pile 13 or other upright support is first installed in a predetermined location adjacent the underwater installation 1, and all operations necessary to install the flowline 60 and connect the flowline 60 to the underwater installation 1 are then carried out with the aid of the guide lines 6 and employing apparatus installed on the pile 13. <IMAGE>
Patent GB-2093329-A (GB)
Title: Tractor draft sensing apparatus
IPC: A01B63/112
Filed: 1982-02-04
Abstract: A tractor draft sensing apparatus in which a shaft (14) is supported at laterally spaced locations (15) on a tractor and carries at locations (22) outboard of the shaft supports a pair of lower draft links (10) so that the imposition of a draft force on the links bends the shaft. The system also includes a sensing unit (42) positioned outboard of each draft link (10) to monitor the deflection of the shaft (14) (or an extension (28) thereof) to provide a signal indicative of the draft force being imposed on each draft link. Each unit (42) is of electrical variable inductance type and is located outboard of a hollow pin (33) connecting to the tractor the lower end of the cylinder of a piston and cylinder assembly for adjusting the associated draft link. The shaft (14) or extension (28) thereof extends with clearance through the pins (33). <IMAGE>
Patent GB-2097023-A (GB)
Title: Use of metallic glasses for fabrication of structures with submicron dimensions
IPC: G03F1/20
Filed: 1981-08-24
Abstract: Patterned structures of submicron dimension formed of supported or unsupported amorphous metals having submicron feature sizes characterized by etching behavior sufficient to allow delineation of sharp edges and smooth flat flanks, resistance to time-dependent dimensional changes caused by creep, flow, in-diffusion of unwanted impurities, out-diffusion of constituent atoms, void formation, grain growth or phase separation and resistance to phase transformations or compound formation.
Patent GB-822468-A (GB)
Abstract: 822,468. Centrifugal pumps. ROTH CO., R. E. March 2, 1956 [March 16, 1955], No. 6659/56. Class 110 (1). The first stage of the pump delivers liquid at a pressure sufficient to prevent the second stage from becoming vapour-locked, and comprises a centrifugal impeller 13 having a large eye, of about half the overall impeller diameter, capable of handling liquid containing large amounts of vapour. The first-stage volute 27 opens into the suction inlet 34 of the second stage, which comprises a circumferential flow impeller 11 operating in an annular channel 16 and delivering to an outlet 35. Interstage leakage is prevented by sealing surfaces 18 and a sealing bush 30, the latter co-operating with the impeller hubs or with the impeller shaft if the impeller hubs are omitted. There may be more than one circumferential-flow stage. The blades of impeller 13 are of generally parabolic form.
Patent GB-2112938-A (GB)
Title: Karman vortex flowmeter
Inventor: MIYOSHI NORIOMI
IPC: F02M69/48
Filed: 1982-11-10
Abstract: A vortex generator 2 comprises upstream and downstream pillars having isosceles triangular and isosceles trapezoidal cross-sections respectively, the bases being adjacent, parallel and spaced. A vortex detector has an oscillatory plate 9 which can oscillate, in response to conveyed vortex pressure changes pivotally about an axis along which extend torsional bands supporting the plate 9 in a frame formed in unitary fashion with the plate 9 and torsional bands. Means are provided for tensioning the torsional bands and for damping their torsional movements. Light emitting and receiving means, e.g. (5a, 5b), provide a light signal indicative of oscillatory displacement. Air flow through the oscillation chamber 16 inhibits contamination of the optics. A signal processing circuit compares the electrical signal corresponding to the detected light signal with an integrated form of the same signal so as to minimise accuracy variations. Arrangements for cooling circuitry and protecting the flowmeter from the high temperatures in a car engine compartment are described. <IMAGE>
Patent GB-2130120-A (GB)
Title: Decorative artefact
Inventor: KOUMBAS JOSEF
IPC: B05D5/06
Filed: 1982-11-17
Abstract: There are disclosed decorative laminates of plastics material, comprising sheets of plastics material, e.g. polymethyl methacrylate, having disposed therebetween a film of paint or pigment and at least one of the said sheets being at least translucent. Pressure is applied to the laminate before the paint or pigment film dries, thereby to cause spreading/intermingling of different colours present in the film.
Patent GB-2110992-A (GB)
Title: Marking grid and method for a linear, decimal and ordered series, usable particularly for indexing pages of a printed work
Inventor: BUCHACA JOSEPH
IPC: B42F21/00
Filed: 1982-03-17
Abstract: Marking method of a linear decimal ordered series, usable particularly for marking lines of a text in pages of a printed work. In this case, the method comprises the assortment of the edge (2) of the book (1) with marks arranged according to an original geometrical law which allows to quickly find one of those marks, and therefore to open the book at the desired page. The present invention also provides to complete such grid for marking pages with an index presented in an original form.
Patent GB-2115543-A (GB)
Title: Headlamp diffusion lens
Inventor: FRATTY HECTOR
IPC: F21V5/00
Filed: 1982-12-30
Abstract: A dipped beam headlamp comprising a moulded glass diffusion lens situated in front of the reflector and the filament. The lens has an interruption to its slope in the form of a substantially horizontal ridge (a) which is situated at a distance below the axis (A) of the reflector (R) of less than one-quarter of the maximum useful aperture radius (R1) of the reflector (R). The zone (Z), defined by the segment I-I, of the interruption to the slope near the ridge has a plurality of fine vertical-deflection ribs (s) extending parallel to said ridge. <IMAGE>
Patent GB-2117577-A (GB)
Title: An electrical distributor segment for telephone exchange systems
Inventor: SCHOLTHOLT HANS
IPC: H01R24/58
Filed: 1983-03-29
Abstract: Two spring connectors 4, 5 are connected to incoming and outgoing lines respectively. An additional break contact spring connector 6 is provided whose free end forms a socket connection together with the free end of the spring connector 4 for receiving a two-pole plug 15 carrying a cut-out fuse 18. When the plug 15 is inserted the two poles of the plug make contact with respective contacts 7 of the spring connectors 4 and 6 so that the fuse 18 is connected in series between the incoming and outgoing lines. When the plug 15 is not inserted the contacts 7 close to interconnect the spring connectors 4 and 6. The spring connector 5 makes resilient contact with a portion of the connector 6 intermediate the ends of the latter. A housing of the distributor segment can receive a plug 13 for interrupting the contact between connectors 5 and 6 or for tapping the signal from these connectors. <IMAGE>
Patent GB-2138088-A (GB)
Title: Submarine cable joint housing
Inventor: ATTENBOROUGH FRANK RICHARD
IPC: F16L25/00
Filed: 1983-04-14
Abstract: An armoured submarine cable joint comprising a tubular housing 10 with internally tapered end portions 10a closely fitting the outer sheath of the submarine cable 5 containing hydraulic hoses 1, 2 wherein the armouring wires 4 or tapes adjacent each cable end are splayed and deformed 4a within each tapered end portion, characterised in that the housing is fabricated from glass filament wound epoxy resin sections adhesively bonded together and potted with a filled epoxy resin system. <IMAGE>
Patent GB-2121465-A (GB)
Title: Door sill
Inventor: BOTTOMLEY ROY HARVEY
IPC: E06B1/70
Filed: 1983-04-29
Abstract: Slots 17, 23 are provided along the upper edges of both external and internal walls 10, 11 of the sill to accommodate respective draught- proofing strips 24. Preferably, a space remains between each strip 24 and the base of the respective slot 17, 23 to permit flexure of the strips 24 inwardly of the slots 17, 23 as required by the pressure of the door. Optional jacking blocks 31, 32 may be provided. <IMAGE>
Patent GB-2123458-A (GB)
Title: Improvements in or relating to apparatus for signalling within a borehole while drilling
Inventor: RUSSELL ANTHONY WILLIAM
IPC: E21B47/18
Filed: 1983-06-28
Abstract: A down-hole signal transmitter for a mud pulse telemetry system comprises a flow constrictor defining a throttle orifice for the mud flow, a throttling member displaceable to vary the throughflow cross-section of the throttle orifice, and a pump 52 for displacing the throttling member against the mud flow in order to modulate the mud flow. The displacement of the throttling member is controlled by a hydraulic amplifier, comprising a main pressure relief valve 72 (Fig. 2) and a subsidiary control valve 74 (Fig. 3), and a solenoid 76 to which the output signal of a measuring instrument is supplied. When the main valve 72 is closed, the pump 52 displaces a ram 66 coupled to the throttling member upwardly. However, when the signal supplied to the solenoid 76 is such as to magnetically attract an armature 78, the control valve 74 is opened to conduct a small flow of oil between the pump input and the pump output, and this in turn causes the main valve 72 to open thus conducting a much larger flow of oil from the pump input to the pump output and allowing the throttling member to be displaced downwardly by the pressure of the mud flow. The power consumption required to modulate the mud flow with this arrangement is very low, and this is easily met by a down-hole electrical generator. <IMAGE>
Patent GB-2143766-A (GB)
Title: Surface preparation of fibre-reinforced thermoplastics
Inventor: FOWLER MALCOM JOHN
IPC: B29C37/00
Filed: 1983-07-23
Abstract: Preparatory to adhesive bonding of a thermoplastics composite a, each face of the composite is moulded against a thin surface layer of metallic material b, e.g. aluminium foil, which is unaffected by the forming conditions and does not affect the fibre-reinforced composite. The metallic surface layer is subsequently completely removed by chemical etching to leave an uncontaminated surface requiring no further treatment before adhesive bonding can take place. <IMAGE>
Patent GB-2145568-A (GB)
Title: Portable telescopic T.V. aerial or aerial holder
Inventor: HOUGHTON ERNST GILBERT
IPC: H01Q1/12
Filed: 1983-08-23
Abstract: A portable T.V. aerial 3, or a portable T.V. aerial fixed to an aerial holder (not shown), can be fixed to the pivot head 5 at the top of a telescopic stem 2. This allows the aerial or aerial holder to be set at the required angle. The stem, being telescopic, can be raised to the required height. The aerial wire 6 can be held to the stem by clips 4 if required. The stem fixes to a floor stand 1 by being slotted securely to it (Fig. 2). The floor stand also slots together securely (Fig. 1). This aerial is easy to assemble, secure and mobile. When dismantled it is easy to store. <IMAGE>
Patent GB-2141878-A (GB)
Title: Aerials
Inventor: HAWKES HENRY WILLIAM
IPC: H01Q9/38
Filed: 1983-09-21
Abstract: A radio receiver and/or transmitter contained in a small, eg man-portable, case (2) and having a monopole aerial (12) is connected to the lower end of the aerial by a length of coaxial feeder (13) having its inner conductor connected between the lower end of the aerial and the receiver and/or transmitter, and the lower end of the outer conductor connected to an earth at the case. The feeder is wound as a helical coil colinear with the aerial, and its outer conductor, which carries the aerial counterpoise current, forms a slow-wave structure of such electrical length that the total current distribution over the aerial-plus-feeder has a relatively high value (low impedance) at the lower end of the aerial and a relatively low value at the case, giving good stabiliry and bendwidth, while allowing the lower end of the aerial to be physically close to the case. In one example, using a quarter-wave monopole, the helically-wound feeder has an electrical length of about a quarter wavelength but a physical length about half this and a coil axis length of only about one-fiftieth of a wavelength. A constructional arrangement is disclosed (Fig.5). <IMAGE>