baber/WOPTO huggingface dataset:
Patent GB-2027734-A (GB)
Title: Chromium complex dyestuffs
IPC: C09B45/16
Filed: 1979-08-07
Abstract: Chromium complex dyestuffs of the formula   <IMAGE>  wherein R and R1, independently denote hydrogen or an alkyl or aryl group provided that at least one of R and R1 is hydrogen or an alkyl group, Z is chlorine or a nitro group, and R2, R3, X1, X2, X3 and Me<+> have the meaning indicated in the description, and their use for dyeing and printing the most diverse substances, but above all for dyeing nitrogen-containing materials, such as silk, leather and, in particular, wool, and also synthetic fibres of polyamides or polyurethanes. The resulting dyeings have good fastness properties.
Patent GB-2056272-A (GB)
Title: Display stud
IPC: A47F5/08
Filed: 1979-08-23
Abstract: The display stud uses the flexible nature of nylon or plastics to provide a shape that both grips the product and also retains it on its display pad or card. The system greatly improves both practically and visually on the use of pins, staples or sewing. <IMAGE>
Patent GB-2029367-A (GB)
Title: Improvements in and Relating to Materials Handling Vehicle
IPC: A01D87/12
Filed: 1979-09-03
Abstract: A loading device (2) for a trailer (1) in which there is a grab (10) such as formed from a pair of grab jaws (11) mounted at spaced apart positions on a frame (12). The frame (12) can be pivoted from a position with the grab (10) beneath the frame (12) and above a load, lying on the ground beside the trailer (1), to a position with the frame (12) on the trailer with the grab (10) and load uppermost in a balanced transporting position. <IMAGE>
Patent GB-2062414-A (GB)
Title: Portable radio receiver
IPC: H04B1/08
Filed: 1979-09-10
Abstract: A portable radio receiver is enabled by a signal picked up from an inductive loop. The receiver output is supplied to loudspeakers 38 and 62 housed in a hearing protector set for use in a factory environment. The components of the receiver are housed in the protectors 81 and 82. A touch sensitive switch gives control over energisation of the amplifier 14 and the loudspeaker unit 13, which control can be cancelled by the absence of output of an inductive loop pick-up unit coupled to supply a control signal to either a time switch, or a tone controlled switch, located in series between the tuner and the touch sensitive switch. The time switch is closed for a set time initiated by the reception of a control signal by the pick-up unit 15. The tone controlled switch is held closed for the duration of reception of the control signal. A low pass audio frequency filter, coupling the pick-up unit 15 to the amplifier 14, may be provided to enable communications transmitted inductively to be fed from the pick-up unit 15 to the loudspeakers. <IMAGE>
Patent GB-2063287-A (GB)
Title: Liquid Crystal Materials Incorporating Benzoate Ester Derivatives and Liquid Crystal Devices Incorporating such Materials
IPC: C09K19/44
Filed: 1979-10-02
Abstract: A liquid crystal mixture suitable for a multiplexed twisted nematic effect device comprises a nematic liquid crystal material having a high positive dielectric anisotropy and including at least one 4-n-alkyl- or 4- n-alkoxy-4-cyanobiphenyl together with at least one laterally substituted benzoate ester compound having a structure formula:   <IMAGE> where X1 and X2 are H or F, at least one being F, and wherein R1 is either an n-alkyl or n-alkoxy group, and Z is either   <IMAGE> where R2 is an alkyl group, or   <IMAGE> where R3 is an alkyl, alkoxy, alkanoyloxy or alkoxycarbonyloxy group.
Patent GB-2060375-A (GB)
Title: Picture frame assembly
IPC: A47G1/06
Filed: 1979-10-16
Abstract: A picture frame assembly is disclosed comprising a unitary panel-like element formed or moulded to provide an integral picture frame and textured painting surface. This assembly may be made from sheet material in the form of metal, paper or board, textile, plastics material, or any laminated combination of such materials. This invention also takes into account the use of either a backing member or a clip-in alternative painting surface with the integral picture frame and textured painting surface. <IMAGE>
Patent GB-2037722-A (GB)
Title: Removal of organic compounds during the Bayer alumina process
IPC: C01F7/476
Filed: 1979-10-31
Abstract: Organic compounds are removed from alum earth production cycle performed according to the Bayer process by heating the liquor to be recirculated, obtained after precipitation to 120- 350 DEG C, and introducing oxygen or an oxygen-containing gas into the liquor until a partial oxygen pressure of 3 to 30 atmospheres is attained, and the solid decomposition products of the organic impurities are separated from the liquor.
Patent GB-2038527-A (GB)
Title: Display devices
IPC: F21V8/00
Filed: 1979-11-28
Abstract: A display device, in particular a motor vehicle number plate, comprises a character support sheet (1) of transparent or translucent material, preferably a plastics material, a backing sheet (2) spaced from the support sheet (1) and having a highly reflective surface (4) facing the support sheet (1), and a light source (3), preferably a cold cathode fluorescent tube, directing light, either directly or indirectly via light transmitting means, into an edge (5) of the support sheet (1) and into the space (6) between the support sheet (1) and the backing sheet (2). The characters (7) are engraved on the support sheet (1) and then may be painted. The lamp (3) is shielded against emergence of extraneous light and is supplied from the vehicle battery via an inverter. <IMAGE>
Patent GB-2040590-A (GB)
Title: Circuit board rack
IPC: H05K7/14
Filed: 1980-01-23
Abstract: A rack for circuit boards has a pair of upright holders 1 interconnected by a plate 3. In use of the rack, the circuit board 5 is retained by a locking member 11, located on a holder 1, and which comprises a hook 15 which snaps over a fastening extension 7 on the board 5, and a groove 12 which engages an edge of plate 3. The locking lever may be accommodated in an opening 10 in the holder 1 and may be located by the sides of the opening, by lateral projections 13 on the lever engaging the face of the holder. More than one groove 12 may be provided to allow the same hook 15 to be used with plates 3 mounted at different heights. The locking lever may have an outwardly cranked extension 18 protected by the walls of the holder but accessible to enable the hook to be released from the member 7. <IMAGE>
Patent GB-2070123-A (GB)
Title: Resilient clip
IPC: F16B2/22
Filed: 1980-02-21
Abstract: A clip (30) is disclosed, which is suitable in use for securing an upper region of a bath panel (20) with respect to an upper region of a bath (10). The clip (30) is stiff but resiliently flexible and has three spaced-apart regions, namely a first region (31, 32) for accommodating an upper edge (23) of a bath panel, a second region (35) defining an abutment face for abutting the inside surface of a bath panel (20) at a position (24) spaced from the upper edge (23), and a third region (38) defining an abutment face for abutting the outside surface of a wall portion (14) of the bath (10), the first and second regions (31, 32; and 35) being interconnected by at least one, preferably two, first spacing portions (33 and 34) inclined to each other, and the second and third regions (35 and 38) being interconnected by at least one, preferably two, second spaced portions (36 and 37) inclined to each other. The clip (30) serves to prevent an upper region of the bath panel (20) being pushed by an external force towards the wall (11, 14) of the bath (10). <IMAGE>
Patent GB-2053649-A (GB)
Title: Tractor ballast weight assembly
IPC: B60D1/02
Filed: 1980-05-12
Abstract: Ballast weights is fitted to the front of a tractor to counter-balance a rear-mounted implement are secured to a frame member 10 on the tractor by bolts 19, there being a hitch clevis 27 fitted into a recess 18 formed in the front surface of the weights, the clevis being secured by bolts 32. The clevis may be secured direct to the frame member 10 when the weights are not required. <IMAGE>
Patent GB-2050966-A (GB)
Title: Attaching supplementary wheels to primary drive wheels of a tractor
IPC: B60B11/02
Filed: 1980-06-04
Abstract: Wheel mounting apparatus (24) suitable for use with agricultural tractors of medium power and above, to attach a supplementary wheel (22) to a primary wheel (18) with an interposed spacer (26), comprises three tensioning links (44) mounted on the supplementary wheel which are simultaneously operated by a single central hand lever (72). The tensioning links engage three hooks (48) welded to the primary wheel and which also enter slots in the spacer to prevent relative turning movement between the spacer and the primary wheel. <IMAGE>
Patent GB-2057073-A (GB)
Title: Two-state mechanisms, especially alternating drive mechanisms such as reversing mechanisms
IPC: F16H3/14
Filed: 1980-08-13
Abstract: Power is transmitted from an input shaft (10) to a sleeve (26) which carries an axially-slidable double ended pawl (40). A ball (58) is housed half in a longitudinal groove in the shaft (10), and half in a cavity (54) in the sleeve (26). The cavity (54) has the shape of a distorted H, with two forward furcations and two rearward furcations linked by an intersection portion. When the mechanism is stationary, a spring (36) acting between the shaft (10) and the sleeve (26) ensures that the ball (58) is resting in one of the rearward furcations of the H. Starting of the motor driving the shaft (10) moves the ball (58) into the forward furcation on the side opposite to the rearward furcation which it previously occupied. The two forward furcations are separated by a triangular projection (42) on the pawl (40), so that when the ball (58) enters, for example, the right-hand furcation, the pawl (40) is shifted to the left. Torque is then transmitted by the pawl (40) to the left-hand one of a pair of sets of ratchet teeth (50) connected by direction reversing gearing, and drive the drum of a laundry machine. When the motor stops again, the ball (58) enters the rearward furcation on the side opposite to the one in which it started. The principle of a ball (58) or other member entering two furcations of an H-shaped cavity in turn, on successive movements of an input member (10) may also be applied to an electric push-push switch. <IMAGE>
Patent GB-2090300-A (GB)
Title: Controlling fibre webs in carding engines
IPC: D01G23/06
Filed: 1980-10-22
Abstract: A method of controlling a web during its passage from the doffing, stripping or control rolls to the calender rolls of a carding engine. Web tension is increased as the rate at which the web is taken from the doffing, stripping or control rolls increases, and web tension is reduced as that rate decreases. The increases and reductions in tension are controlled in such a way that the web is maintained in a stable condition.
Patent GB-2086500-A (GB)
Title: Brake adjustment specifically for vehicle drum brakes
IPC: F16D65/14
Filed: 1980-11-01
Abstract: Adjuster means include a plurality of adjustment members 78 operated in unison to move (a) friction member(s), and an operating member 91 having thereon respective pawls 110 for engagement respectively with sets of ratchet teeth on the adjustment member. In the drum brake of Figures 8-13 screw-threaded said adjustment members 78 are rotated with respect to a non-rotatable nut 79 each time the amount of camshaft rotation required to apply the brake exceeds a predetermined value. A sensor bar 90 which rotates with camshaft 76 moves from beneath an operating bar 91 allowing an edge 114 of the latter to snap into the path of return movement of the bar 90. Upon release of the brake, the bar 90 engages the edge 114 and moves bar 91 against the action of a spring (107) until a ramp surface 115 on bar 91 engages a fixed pin 101 and causes edge 114 to spring clear of the bar 90, whereupon the bar 91 returns to its starting position under the action of the spring (107). During this angular reciprocation of the bar 91, pawls 110 thereon engage respective ratchet wheels 111 on the adjustment members 78 and rotate the latter by the same amount. In arrangement of Figures 1-7 a block (18) of friction material is carried by a tray (19) which is moved bodily upon application of the brake, the block being moved along the tray by means of two adjustment member screws (46) to compensate for wear. A bar (54) with pawls (55) acts on ratchet wheels (53) and both screws are rotated by the same amount when adjustment is required. <IMAGE>
Patent GB-2086243-A (GB)
Title: Automatic Score Translator
IPC: F41J5/04
Filed: 1980-12-09
Abstract: An automatic score translator has a multiplicity of sensors which identify the location of a target board hit by a projectile. Sensors are arranged at the rear side of the target board and an electronic circuit receives the analogue sensor outputs and resolves them into a single signal which identifies the marginally largest sensor output. A projectile may contain a permanent magnet and the sensor system responds to field variations created by the arriving projectile. The score data selected is processed by an arithmetic circuit which may include a memory register, display encoders and a printout unit. Alternatively, a combination may be used of intensity and time lag differences in the propagation of an impact pulse created by the projectile on the board. Pressure sensitive elements are mounted on the rear of the target board and their outputs are fed to an electronic circuit which compares time lag and intensity levels of the impact pulse at different rear- board locations.
Patent GB-2066299-A (GB)
Title: Growing doped III-V alloy layers by molecular beam epitaxy
IPC: C30B23/02
Filed: 1979-12-19
Abstract: A modified method of growing III-V alloy layers by a molecular beam process. Difficulties have been experienced using known molecular epitaxy processes for growing doped III-V alloy layers having satisfactory electrical and optical properties. The doped III-V alloy layer is grown by a molecular beam epitaxy process which has been modified so that growth proceeds through a surface containing from 5 to 20% of a monolayer of lead, a lead flux impinging on the growth surface together with fluxes of the constituent elements of the doped III-V alloy.
Patent GB-2091315-A (GB)
Title: Method of supporting rock strata and support means for use therein
IPC: E21D19/02
Filed: 1981-01-19
Abstract: The reinforcement of rock strata forming a weak roof over a cavity such as encountered at the faceline in longwall coal mining is effected by installing one or more reinforcing elements, such as wooden dowels or steel rockbolts, in substantially horizontal small diameter boreholes drilled into the strata adjacent the mouth of the cavity and attaching to the free end of the or each reinforcing element by means of a suitable connecting member a supported girder which spans the mouth of the cavity. Columns formed from wooden blocks can then be positioned on the girder to provide support for the roof strata. <IMAGE>
Patent GB-2069578-A (GB)
Title: Mine roof support system
IPC: E21D23/16
Filed: 1981-02-06
Abstract: The invention relates to a mine roof support system of the kind in which, when roof supports advance towards a conveyor, their roof beams are maintained in contact with the roof by connecting the props (3, 4) of the supports to a low-pressure-liquids pipe (14) which is a small-bore. In order to prevent the setting up of a back-pressure in the small-bore pipe (14), due to a converging roof and floor, which would interfere with the advance of the roof supports, a pressure-operated valve (23) is provided in the low-pressure-liquid supply circuit to the props of a roof support. This valve (23) normally connects to the props (3, 4) to the low-pressure- liquid pipe (14). If a back-pressure be set up in the props (3, 4), that back-pressure shifts the valve (23) so that the props are connected to the customary return line (12) until the pressure is relieved, when the valve (23) moves to its normal position. <IMAGE>
Patent GB-2094223-A (GB)
Title: Improvements in production of belt joints
IPC: F16G3/04
Filed: 1981-03-06
Abstract: A belt joint in a belt of tear resistant material such as KEVLAR (Registered Trade Mark) is made by weaving the belt of the tear resistant material, punching a row or rows of slits 2 adjacent each end of the belt, inserting the convolutions 3 of a spirally wound plastics material coil through the slits 2, and passing a rod or tube 4 of plastics material through the interdigited loops of the spiral or spirals to unite the ends of the belt. <IMAGE>
Patent GB-2071502-A (GB)
Title: Surgical retractors
IPC: A61B17/02
Filed: 1981-03-12
Abstract: Surgical retractors conventionally involve metal jaws used to apply force in a localised manner within the overall periphery of an operation site and this gives rise to several difficulties. It is now proposed that a surgical retractor comprise a flexible closed loop member (20) locatable in an initially compacted form in the incised site and at least partially inflatable to expand into an apertured configuration opening the site and exposing the interior thereof. The member suitably has a concave cross-sectional radially outer profile, which can be provided, for example, by the use of two annular inflatable portions (21) interconnected by a radially inner web (22), these portions conveniently being communicated by tubes (23) to facilitate inflation. Also the member may be structurally constrained, such as by suitable reinforcement, to form an elongated configuration to suit a common form of operation site. <IMAGE>
Patent GB-2076218-A (GB)
Title: Discharge lamps
IPC: H05B41/16
Filed: 1981-05-13
Abstract: A low pressure discharge lamp includes two electrode groups 1a, 2a and 1b, 2b each comprising respectively a cathode 1 and an anode 2, wherein the anodes 2 and cathodes 1 are connected to the cathode 4 and anode 5, respectively, of respective first and second semiconductor rectifier 3a and 3b, the discharge being effected alternately between opposed electrodes as shown at 10 and 11. The discharge lamp apparatus is a small multi-purpose, high-efficiency apparatus which provides a large luminescence output. The lamp may, for example, have a high U-V output for sterilization, and the envelope may have an exterior or interior coating of luminescent material, e.g. in stripes or dots, to provide an additional or alternative lighting function. The lamp may be mounted in an outer envelope, Fig. 5 (not shown), and may include reflective surfaces, or it may be mounted in a housing, Fig. 6 (not shown) which divides it into two parts having different functions. In one arrangement the cathode emissive material is barium strontium calcium beryllate (BaSrCa)BeO2. Starting of the lamp may be aided by use of the circuits of Figs. 2 and 3 (not shown). <IMAGE>
Patent GB-2101850-A (GB)
Title: Digital transmission systems
Inventor: DYKE PETER JOHN
IPC: H04L25/03
Filed: 1981-06-04
Abstract: Feedback equalization is employed for digital repeaters of transmission systems having twisted-wire pairs, in order to reduce intersymbol interference while minimizing near-end crosstalk gain. Previously the incoming signal was selectively amplified at the higher frequencies in order to negate intersymbol interference, with subsequent near-end crosstalk gain. According to the present invention the intersymbol interference element of an incoming signal is cancelled, prior to amplification in an adder by a compensation signal derived from the output signal of a regenerator and a retimer. An output stage serves to amplify and shape the resultant signal to a form suitable for transmission. The compensation signal comprises the inverted output of a filtering and scaling network.
Patent GB-2080323-A (GB)
Title: Grinding wheels
IPC: B24D3/00
Filed: 1981-07-14
Abstract: A grinding wheel is described which is bonded with a phenol formaldehyde resin based bond containing hexamethylenetetramine as the curing agent. The wheels are made by first wetting the abrasive with furfural in varying quantities relative to the amount of hexamethylenetetramine in the phenol formaldehyde resin. Different amounts of the curing agent require different specific amounts of furfural to produce optimum properties in the finished grinding wheel.
Patent GB-2103080-A (GB)
Title: Easy access bath for disabled
Inventor: LLOYD JOHN
IPC: A47K3/00
Filed: 1981-08-08
Abstract: A side wall of a bath is interrupted and provided with a horizontal grid 2 which, via a container 5 and a conduit 4, acts as an overflow for water within the bath, the side wail interruption providing easy access to the bath. Support rails to assist entry etc. are secured to the side wall. <IMAGE>
Patent GB-2117922-A (GB)
Title: Measuring out of workpieces using correspondence control techniques
Inventor: YOUNG REGINALD SEARLES
IPC: G01B11/02
Filed: 1981-12-18
Abstract: Data relating to the required length of a slab 1 are supplied by an operator to a motor which moves cam 9 to laterally move a photodetector assembly 10 including a light guide 11. A laser 4 projects a light beam via mirror 15 onto the slab at 6. The output from detector 10 is used to operate actuator 14 which angles mirror 15 so that the laser beam just touches the light guide 11 and provides a visual indication of the desired length from position 3 which is aligned with the laser so that an operator can accurately cut the slab. A position transducer 7/8 operates a display 12 of the set length. <IMAGE>
Patent GB-2102127-A (GB)
Title: Determining the position of a device inside biological tissue
Inventor: BRESLER ROBERT GORDON
IPC: G01V3/10
Filed: 1982-05-05
Abstract: The position of a device such as an endotracheal tube 100 inside biological tissue is detected by a probe 20 which generates a small magnetic field which is disturbed by a magnetically permeable metal band 104 in the device when a narrow end of the probe is positioned immediately adjacent to tissue containing the metal band. The probe 20 comprises a central coil producing an AC magnetic field positioned between two co-axial coils for sensing disturbances in the field. Signals from the sensing coils are amplified, integrated, and sent to respective inputs of a comparator which controls the frequency of an oscillator. Thus the frequency emitted by a speaker 34 and the selection of one of a series of LED's 36 indicate the proximity of the metal band 104. <IMAGE>
Patent GB-2099737-A (GB)
Title: Manufacture of rolled sections
IPC: B21B1/08
Filed: 1982-05-14
Abstract: A slab 60 of rectangular section is formed into a pre-blank by rolling it in a passage 61 whose base width is less than or equal to the thickness of the slab used and whose lateral faces are inclined by an angle  alpha 1 which is a function of the dimensions of the blank. The rolling upsets the slab ends into mushroom shapes having a thickness of roughly 12% of the slab thickness. The rolling may be carried out using vertical or horizontal rolls. Rolling is completed by carrying out conventional profiling passage rolling to produce the pre-blank 63 and blank 64. <IMAGE>
Patent GB-2099887-A (GB)
Title: Slack adjustment for slip system in downhole well apparatus
IPC: E21B23/01
Filed: 1982-06-10
Abstract: A well packer 10 or other downhole tool apparatus comprises a mandrel 12, a slip assembly 70 around the mandrel including wedge means 60 that are movable to force slip members 72 radially outwardly into gripping contact with the conduit and slack adjusting means 52, 54, 56 and 58 for adjustably positioning the slip assembly 70 to cause the slip members 72 to be retained in an inwardly retracted position substantially to prevent the slip members from engaging the conduit during insertion of the tool. <IMAGE>