baber/WOPTO huggingface dataset:
Patent GB-2025744-A (GB)
Title: Machine for pulling endives and other pivoting roots
IPC: A01D21/04
Filed: 1978-10-09
Abstract: The machine for pulling the endives and other pivoting roots comprises at least one pulling assembly mainly consisting of a frame (3) bearing a ploughshare (8), a metal disc (39) approximately vertical presenting a gap with respect to the ploughshare (18) transversally to the working direction of the ploughshare and located behind the ploughshare according to this direction, and a free spokes wheel (25, 26) placed in front of the disc (39) and driven by a motor at a higher speed than the advance speed of the machine, the disc and/or the spokes wheel being inclined with respect to the vertical so as to form a V. The disc (39) can rotate idle on its shaft or driven at a different speed from that of the spokes wheel. The pivoting root is pulled with the soil around it in an upward rotating motion, motion that rids it of the soil without damaging it. <IMAGE>
Patent GB-2024757-A (GB)
Title: Discharging from conveyors
IPC: B65G47/82
Filed: 1979-06-11
Abstract: The present invention provides a discharge mechanism for a conveyor system, for example for transporting lengths of tubing in a tube forming mill, where one length of tube has to be removed from the conveyor 25, without disturbing a closely following length of tube. The discharge mechanism comprises a rotary discharge means 11 which may be swept through the path of articles travelling along the conveyor 25, drive means 16 connected to said discharge means for rotation thereof, said drive means being capable of being stalled at high torque, the transmission between the discharge means and drive means including an escapement 17 by means of which the drive to the discharge means may be intermittently interrupted and then released to produce an indexed rotation of the discharge means while the drive means remains at full torque. By this means, when the escapement is operated to permit the discharge means to be rotated, the full torque of the drive means is immediately available and maximum acceleration will consequently be achieved. In this way the time taken for the discharge means to clear the path of the following tube, will be reduced to a minimum. <IMAGE>
Patent GB-2037742-A (GB)
Title: Catalytic dehydrogenation
IPC: C07C43/23
Filed: 1979-07-09
Abstract: A method of producing an aromatic compound comprises dehydrogenating a compound having a six- membered carbocyclic ring in the molecule, the ring having a degree of saturation greater than that of a benzene ring, the dehydrogenation being carried out in the presence of a catalyst system comprising elemental palladium together with sodium or lithium carbonate and sulphur. The compound to be dehydrogenated may be a substituted cyclohexane. When the substituted cyclohexane is an alkoxycyclohexanol, the aromatic compound produced is an alkoxy phenol. In particularly useful aspect of the invention the substituted cyclohexane is a 1-alkoxyclohexanol, the aromatic compound produced being an ortho-alkoxy phenol.
Patent GB-2028543-A (GB)
Title: Intelligent programmable process control system
IPC: G06F19/00
Filed: 1979-08-20
Abstract: An intelligent programmable control system, for controlling industrial processing and manufacturing equipment and the like, utilizes two co-operating processors, e.g. microprocessors in module 10. A digital processor is utilized for controlling the analogue portion of the processing equipment, and a boolean processor is utilized for sequencing and controlling the on/off states of controllable devices along the process. Along the process communication means is provided for communications between the processors, the control processor having overall supervisory control. In one embodiment, a circuit is provided for allowing parallel digital I/O, accessible by the digital processor, for addition a control of the analogue processing equipment. The processors share a common memory and operate asynchronously. Arithmetic functions and non-arithmetic (logic) functions can be linked within a Boolean-type instruction to allow a process on/off state to be controlled in accordance with computed statistical criteria. <IMAGE>
Patent GB-2057049-A (GB)
Title: Mounting of cupboard doors
IPC: E05D5/06
Filed: 1979-08-25
Abstract: Cupboard doors of the type having at least one side edge being afforded with a lip (36) of channel cross-section, is provided with a hinge mounting by the use of a hinge bracket (40) which is pressed into the channel, causing the channel and/or the bracket to be resiliently deformed, the bracket being retained in position within the channel by virtue of the resilience of the channel, and/or the hinge bracket, preferably solely by frictional engagement therebetween. <IMAGE>
Patent GB-2033383-A (GB)
Title: Herbicidally active carbamic acid phenyl esters and their manufacture and use
IPC: C07C239/00
Filed: 1979-10-01
Abstract: Novel carbamic acid phenyl esters have the formula I   <IMAGE> (wherein R1 represents C1-C2 alkoxy- C1-C2-alkyl, di-C1-C2-alkoxy- C1-C2-alkoxy, CN-C1-C2-alkyl, Hal-C1-C2alkyl, HO-C1-C2-alkyl, phenyl-C1-C2-alkyl, 1,3-dioxolan-2- yl-methyl, 2-methyl-1,3-dioxolan-4- yl-methyl, 4-methyl-1,3-dioxolan-2- yl-methyl, 2,2-dimethyl-1,3-dioxolan- 4-yl-methyl or H2N-CO-C1-C2 alkyl, R2 represents phenyl optionally substituted by 1 or 2 substituents selected from Hal atoms and methyl and methoxy groups and R3 represents C1-C8-alkyl, C2-C8-alkenyl, cyclopropyl or Cl3C, or R1 represents methyl or ethyl, R2 represents  alpha -CN- benzyl or 1-CN-2-phenylethyl and R3 represents ethyl). The compounds may be prepared from the appropriate 3-acylaminophenols or the chloroformates thereof. The novel compounds of the formula I have a herbicidal action and accordingly may be made up with suitable carriers into herbicidal preparations and may be used for protecting living plants and crop areas against weeds.
Patent GB-2033871-A (GB)
Title: Improvements in or relating to lifting trucks
IPC: B66F9/065
Filed: 1979-10-17
Abstract: A fork lift truck 1 with an extendible boom 2 has fork apparatus 4 mounted on a trolley 5 with wheels 6. The fork apparatus 4 is supported at the end of the boom 2 by depending pivotally mounted arms 7, the trolley 5 having a sliding connection with the arms 7 as by a key and slot arrangement. The fork apparatus 4 can thus move vertically relative to the boom 2, within predetermined limits, so that it may be supported by the floor of the container 3 despite irregularities in the floor, or in positioning of the boom 2, to avoid possible tipping of the truck 1. Local control of raising and lowering of the forks may be provided, together with slewing, to facilitate control of the trolley 5 inside the container 3. <IMAGE>
Patent GB-2061283-A (GB)
Title: Procedure for obtaining pure hemicellulases
IPC: C12N9/24
Filed: 1979-10-25
Abstract: A process for obtaining an active hemicellulase preparation comprises extracting protein from the finely divided flesh or whole body of the mollusc Mya arenaria, sequentially separating from the extract inert protein and then protein with hemicellulasic activity by fractional precipitation with an organic, water- miscible liquid non-solvent for the protein, drying the precipitate with hemicellulase activity, and removing traces of the non-solvent from the resulting preparation. The preparation has high hemicellulase activity, e.g. a minimum of 100 Willstätter units (WU) per gramme.
Patent GB-2039057-A (GB)
Title: Digital strain measurement technique
IPC: G01R17/10
Filed: 1979-12-04
Abstract: An electrical circuit provides a digital representation of strain and uses electrical resistance strain gauges 2, 4 arranged in a Wheatstone bridge 1. The bridge unbalance output is integrated at 16 and compared with a reference at 19. When the reference is exceeded, flip-flop 23 changes state and closes analogue CMOS switches 10, 11 to connect resistors 8, 9 in parallel with bridge resistors 3, 5. The length of time the resistors are switched in parallel with the bridge is proportional to the magnitude of the applied strain and this time is determined by counting clock pulses. The result is displayed as a digital representation of the strain applied. <IMAGE>
Patent GB-2069634-A (GB)
Title: Change-speed gearing in driven axle
IPC: F16H3/083
Filed: 1980-02-16
Abstract: A driven axle has level gears (13 and 14) driven by a level pinion (15) and rotatable on a hollow shaft (11) which also has rotatable thereon first and second gears (25 and 26). The bevel gears and the first and second gears may be locked to the shaft to provide a reverse ratio and two forward ratios by a control rod (31) movable axially in the shaft and having a land (32) which causes balls (61, 63, 65 and 67) to engage selectively in tracks (60, 62, 64 and 66) in the gears. The first and second gears (25, 26) mesh with respective gears (28, 29) provided on the housing (20) of differential gearing (19). The disposition of the gears, including the provision of the first gear (25) between the level gears (13, 14), provides a compact drive axle. <IMAGE>
Patent GB-2044277-A (GB)
Title: Process for producing a cyclopentadiene copolymer and a composition comprising said copolymer and a rubber
IPC: C08F232/06
Filed: 1980-02-19
Abstract: A cyclopentadiene copolymer is produced by copolymerizing cyclopentadiene and a copolymerizable unsaturated hydrocarbon (which is preferably either a chain-conjugated diolefin or a monoolefin) using, as catalyst, a complex solution comprising a Lewis acid, an oxygen-containing electron donor and an aromatic hydrocarbon. This copolymer can be blended with a diene rubber (e.g. natural rubber or a styrene-butadiene copolymer rubber) to improve the properties of the rubber.
Patent GB-2049351-A (GB)
Title: Loudspeaker unit
IPC: H04R1/28
Filed: 1980-04-02
Abstract: A partition 14 divides the interior of a cabinet 10 into a lower air chamber 16 in which a bass/midrange speaker unit 12 is provided and an upper air chamber 15 which communicates with the lower air chamber through ports (33) covered with damping material 34. The lower air chamber 16 also communicates with the exterior of the cabinet 10 through ducts 22 and 28 in the manner of a bass reflex enclosure. The upper air chamber 15 essentially constitutes an air pocket which cushions inward movement of a diaphragm D of the speaker unit 12 sufficiently to prevent uncontrolled diaphragm excursion at low frequency resonances, while the ducts 22 and 28 provide good bass extension. In an alternative arrangement, the cushioning effect is obtained using a one-way valve which allows substantially unrestricted flow of air into the air chamber in which the speaker unit 12 is disposed, but which restricts air flow out of the air chamber to the cabinet exterior. <IMAGE>
Patent GB-2055451-A (GB)
Title: Drive Coupling for Transmitting Rotary Motion
IPC: F02D1/16
Filed: 1980-06-24
Abstract: A drive coupling for transmitting rotary motion between a pair of rotary members comprises first and second members one of which carries pins 17 off-set from but parallel to the axis of rotation of the coupling, the pins carrying weights 18 which are coupled to the other member by further pins 19 carrying abutments 20 engaged in slots 21 in the weights 18. The weights are biassed against outward movement by leaf springs 22 which are located against curved outer surfaces of the weights. The end of the springs engage an annular part which is a skirt portion of said other member and the springs have ears 24 intermediate their ends which locate in slots 25 formed in the side faces of the weights. <IMAGE>
Patent GB-2080956-A (GB)
Title: A Meter Movement Protection Device
IPC: G01R1/36
Filed: 1980-07-26
Abstract: The invention of putting a low voltage zener diode in shunt with a meter movement and ballast resistor in an electrical testmeter means that for low cost a cheap multimeter can be protected from being burnt out or mechanically damaged and for little extra cost a light emitting diode can be incorporated in series with the overload zener diode to give a visual indication of meter overload. <IMAGE>
Patent GB-2077377-A (GB)
Title: A tube connector
IPC: F16L37/098
Filed: 1980-08-01
Abstract: A tube connector consists of a male and a female element, each being moulded from synthetic plastics material. Each element has peripheral ridges or a plain cylindrical surface whereby each may be thrust into and retained in an open end of a tube by the gripping action of the ridges or by the friction of the cylindrical surface on the interior of the tube wall. The female element has a pair of springy catches 26 at opposite ends of a diameter which are positioned and arranged to spring outwardly to allow entry of the male element 10 and then spring inwardly to securely retain the male element in the female element by engagement of the catches 26 with a radially projecting rim 18 on the male element 10. <IMAGE>
Patent GB-2070533-A (GB)
Title: Engine and gearbox assemblies
IPC: B60K17/02
Filed: 1980-09-15
Abstract: A transverse in-line engine- gearbox unit for a motor vehicle has the clutch (13) and flywheel (23) mounted at the end of the gearbox (12) remote from the engine (11). Drive is transmitted from the engine to the clutch and flywheel by an intermediate shaft (20) which extends through the hollow interior of the gearbox input shaft (21). <IMAGE>
Patent GB-2058500-A (GB)
Title: Channel selector for television receiver
IPC: H03D7/16
Filed: 1980-09-25
Abstract: A channel selector for a television receiver having a spectrum filter 12, 13, 16 for selecting a plurality of television channels from received signals, a MESFET mixer 20, 67 for converting the selected spectrum to a first high intermediate frequency above 45 MHz, a channel selecting acoustic surface wave filter 28 for selecting a desired channel from the converted spectrum, a second mixer 32 for changing the selected channel frequency by a fixed frequency to a lower frequency and an amplifier 38 for the changed selected channel at a second, lower intermediate frequency, the gain of the amplifier being substantially greater than the total gain of the preceding stages. <IMAGE>
Patent GB-2067656-A (GB)
Title: Closing control for a double door, particularly a fire door
IPC: E05F5/12
Filed: 1981-01-15
Abstract: A closing control for a double door comprising a first leaf (11) and second leaf (12), to ensure that the first leaf (11) closes before the second leaf (12), comprises respective door closing means (13) for the leaves (11, 12), which door closing means (13) will hold the respective door leaf (11 or 12) in an open position if the leaf is opened beyond a determined angle, and an abutment arm (20) movable between an initial position (shown dotted) and an extended position (shown in full lines). The closing control includes electro-magnetic holding means (26) to maintain the arm (20) in its initial position until a control signal is generated by a closing movement of at least one of the leaves (11, 12) of the door and for operation of at least one of the door closing means (13). An electronic control circuit is provided for sensing operation of the door closing means (13) and is connected also to the holding means (26) and to a fire detector such as a smoke sensor. <IMAGE>
Patent GB-2085502-A (GB)
Title: Building units for forming permanent formwork
IPC: E04B5/38
Filed: 1981-01-22
Abstract: A building unit incorporating a thin wall concrete base 20 and one or more reinforcing members 22 each having a foot secured in the base and extending above the base. The unit is placed in position and concrete is poured onto it to form a structural member, the unit forming a base formwork. Filler blocks of cellular plastics 23, foamed polystyrene 24 or expanded clay 25 may be fixed to the unit to reduce the volume of concrete in the structural member, reducing the latter's weight. The units may be lifted by a spreader frame 27 using hooks 58 and cables 59. Additional temporary formwork may be used. <IMAGE>
Patent GB-2072984-A (GB)
Title: Electronic circuits
IPC: H03K3/30
Filed: 1981-03-24
Abstract: A blocking oscillator circuit is disclosed for use in signal and power switching, regulated and unregulated power supplies, power control, amplification, power conversion, waveform generation including sinusoidal power generation at frequencies up to and including radio frequency. The circuit comprises a current transformer having at least a first coil (1) with N1 turns and a second coil (2) with N2 turns connected in the base circuit and in the emitter/collector circuit respectively of, an ON/OFF switchable transistor having a current gain greater than N1/N2. A gated discharge circuit (D) is arranged, when in its ON condition, to hold the base/emitter transistor junction reversed biassed and dissipate magnetising current from the transformer, and is gated to an OFF condition when the transistor is ON and to an ON condition when the transistor is OFF. A second transistor provided with its own first and second coils may form the gated discharge circuit for the first transistor. <IMAGE>
Patent GB-2080875-A (GB)
Title: Resilient pipe clamp
IPC: F16L33/035
Filed: 1981-06-04
Abstract: A resilient annular pipe clamp has at its ends oppositely disposed rows 8 and 9 of inter-engageable securing teeth. The two ends of the clamp are located by a rib 15 lying in a groove at 6. <IMAGE>
Patent GB-2079767-A (GB)
Title: Packaging film
IPC: C08L23/06
Filed: 1981-06-26
Abstract: A packaging film having reduced slip comprises an ethylene copolymer matrix and a uniformly distributed particulate organic solid of defined particle size e.g. a thermoplastic polymer such as a polyolefin, polyamide polyester, polycarbonate or polyacetal, and particularly high molecular weight high density polyethylene.
Patent GB-2103675-A (GB)
Title: Drainage headwall support
Inventor: HOARE JOHN KENNETH
IPC: E02B11/00
Filed: 1981-08-04
Abstract: A one-piece headwall support for a drainage outfall pipe discharging into a ditch comprises a rear face plate portion 1 connected to a front flange 3, adapted to be flush with the bank of the ditch, by integral walls 4 and 5 of which the lower wall 5 forms a cill. The rear face 1 has an aperture for the outfall pipe and, for anchorage purposes, a loop 6 of polypropylene cord, twine or strand is cast into one of the walls 4 for attachment of an anchor line itself attached to a more or less remote anchor. <IMAGE>
Patent GB-2104933-A (GB)
Title: Brick slip cladding
Inventor: LEE CHRISTOPHER ANTHONY
IPC: E04F13/14
Filed: 1981-08-05
Abstract: Brick slips 10, 20 with mitred edges 16, 26 are juxtaposed at external corners. Brick slips are described having mitres cut, generally from a narrow edge to provide respective angles of less than 45 DEG  at apex e.g. 39 DEG -43 DEG  at the shorter face. This enables the slips to be laid accurately without unsightly gaps appearing at the corner joint. Adjustment of composition and firing conditions enables a varied range of colouration and texture. Slips may be cut from low compression moulded bricks, fired to obtain a uniform internal colouration and only a proportion of the slips require to be mitred, and then cut into slices by cutting with a single or multi-bladed band saw. The mitres may be cut using a single bladed saw. <IMAGE>
Patent GB-2092052-A (GB)
Title: Razor blade assembly
IPC: B26B21/56
Filed: 1981-08-07
Abstract: A razor assembly which may be of the tandem blade, disposable cartridge type, has blade means each comprising an upwardly and forwardly extending blade portion 62 making an obtuse angle with a generally planar support portion 60 mounted at its ends in slots and movable in its own plane under and against the action of resilient spring fingers 18 which urge the blade means outwardly, i.e. toward the skin in use of the assembly. <IMAGE>
Patent GB-2104849-A (GB)
Title: Apparatus for securing a wheelchair within a vehicle
Inventor: THOMAS EVAN SAMUEL
IPC: B60R22/00
Filed: 1981-08-24
Abstract: The apparatus comprises  a base member 10 for anchoring the apparatus to the vehicle, a stanchion 11 pivotally mounted on the base member so as to be adjustable in rake to conform to the rake of a wheelchair back, and anchorage means 16 on the stanchion for attachment thereto of the wheelchair. The stanchion is preferably in seat back squab form and the apparatus has means 15 for fitting a seat base squab when a wheelchair is not in place. <IMAGE>
Patent GB-2108159-A (GB)
Title: Garment sewing jig
Inventor: CHAMBERS GEORGE RICHARD
IPC: D05B39/00
Filed: 1981-08-25
Abstract: A garment sewing jig comprises a base board 1, having a sewing track 3 in the form of an aperture, comprising an elongate, shaped slot part 3a and a flared end part 3b; a positioning board 4 comprising a fixed part 4a and a part 4b relatively pivoted to the fixed part, and having an arcuate guide slot 5 cooperating with a pin 2 on the base board, the positioning board 4 has a sewing track 7 therein in the form of a slot part 7a in fixed board part 4a identical in shape and width with and overlying slot part 3a, and a slot part 7b in movable board part 4b movable within the flared end part 3b a fullness bar 8 is also provided on the positioning board 4; and a lid 10 hinged to the positioning board, comprising relatively pivotable parts 10a and 10b with a sewing track 12 therein comprising a slot arranged to overlie the sewing track 7 in the positioning board 4. <IMAGE>
Patent GB-2084385-A (GB)
Title: Electric Cables
IPC: H01B9/02
Filed: 1981-09-23
Abstract: In an electric cable for service at about 15kV and above, at least one extruded semiconductive screening layer comprises elongate metal particles dispersed in a polymeric matrix. The matrix adheres both to the particles and to the insulation and at least the polymeric material in the matrix (normally in the insulation as well) is cross-linked by the technique involving grafting silane side-chains to the polymer and then cross-linking them by hydrolytic condensation (the "Sioplas-E" process). The proportion of dispersed conductive particles is sufficient to give a resistivity in a longitudinal direction of no more than 5000 ohm-cm. The resistivity of the metal of the particles does not exceed 15 times that of copper and its hardness is not greater than 100 Brinell. The particles have an average length of at least 1 mm (normally exceeding the thickness of the screening layer) and an aspect ratio of at least 10:1, and are predominantly aligned longitudinally of the cable. By selecting the particles in this way, conductivity is achieved with a material that is still extrudable, and the use of metal particles rather than conductive carbon black avoids the severe detrimental effects on the cross-linking process of moisture carried by the reactive surface of the carbon black.
Patent GB-2110125-A (GB)
Title: Machine tool straightness calibration
Inventor: GOOCH IAN DOUGLAS
IPC: B23Q23/00
Filed: 1981-11-20
Abstract: Apparatus for correcting straightness errors in a machine tool having a first member (10) movable nominally along a first axis (12) on guideways carried by a second member (11) includes a tensioned filament (13) supported at its ends by the second member and extending at a known angle to the first axis (12). A sensor (14) is provided, carried by the first member (10), and operable to co-operate with the tensioned filament (13) to indicate the sense and magnitude of any movement of the first member (10) along a second axis (16) at an angle to the length of the filament (13). Preferably the filament (13) is parallel to the first axis (12) and perpendicular to the second axis (16). The sensor may include a light source and two light sensitive devices; the source and devices being disposed on opposite sides of the filament and providing an output signal to circuit means indicating an error movement of the first member. <IMAGE>