baber/WOPTO huggingface dataset:
Patent GB-2072793-A (GB)
Title: Mechanical screw transmission
IPC: F16H25/22
Filed: 1980-03-24
Abstract: A mechanical transmission comprises a screw shaft (12) having a helical thread groove (26), and a nut body (14) having a radially movable socket member (17) in which there is received a thread-engaging ball (16). The socket member (17) has a circular load surface (20), and a second load surface (22). The helical thread groove (26) is characterized by a pair of co- extensive, helical troughs (28, 30), each trough being partially circular in cross section. The troughs intersect one another adjacent the root of the thread groove (26), each trough (28, 30) having a radius of curvature slightly greater than the radius of the ball (16). The arrangement is such that for a given direction of relative axial movement between the nut body (14) and screw shaft (12), the ball (16) has a relatively small area (31) of contact with the surface of only one trough (28, 30), at a point on the ball (16) which is substantially aligned with but opposite to the resultant of the forces existing between the ball (16) and the socket (17). <IMAGE>
Patent GB-2073161-A (GB)
Title: Method of Preparing Calcium Boron Phosphate Catalyst
IPC: C07C1/247
Filed: 1980-03-31
Abstract: A calcium boron phosphate catalyst suitable for the production of isoprene from isobutylene and formaldehyde and for use in alcohol dehydration reactions is prepared by reacting calcium salts with phosphoric acid salts in aqueous ammonia, separating the resulting precipitate from the reaction mixture, suitably shaping said precipitate, drying it, and heat treating it at an elevated temperature in the presence of steam or steam with inert gas, mixed with boric acid or with a mixture of boric and phosphoric acids, the molar ratio of boric to phosphoric acids being between 0.1 :1 and 10:1. The reaction of calcium salts with phosphoric acid salts in aqueous ammonia is effected with the starting reactants used in the molar ratio of 1.5:1 if no phosphoric acid treatment is used on the reaction mixture obtained, or in a molar ratio of between 1.5:1 and 5.0:1 if the reaction mixture is treated with a solution of phosphoric acid to pH of from 5.0 to 7.0.
Patent GB-2077203-A (GB)
Title: Removable Vehicle Track
IPC: B62D55/24
Filed: 1980-04-04
Abstract: removable track 3 for vehicles is made up of links 7. The track 3 can be put on around the normal wheels and tyres of the vehicle so as to convert it into a tracked or half-tracked vehicle. The links 7 have U-shaped members 17 partially embedded in them, the arms of the U preventing the track from coming off the wheels in use. The arms of the U are convexly curved in the direction of the length of the track, and may be coated with polyurethane, both features reduce scuffing and tyre wear. Adjacent links 7 may be joined by a bolt passing through lugs 13, so that the track may be opened between any two links. A kit can be provided of standard length links and a few links of other lengths (e.g. submultiples of the standard length) so as to allow the making of a track of suitable length for the prevailing circumstances. <IMAGE>
Patent GB-2077450-A (GB)
Title: Method for photographic replication of information on an optical data storage medium
IPC: G03C8/06
Filed: 1980-07-01
Abstract: A method of replicating data from a master transmissive optical data storage medium whereby the resulting product displays areas of low reflectivity and high reflectivity. Actinic radiation is shone through transmissive areas onto a silver-halide emulsion photosensitive medium. The photosensitive medium is then chemically developed black. Next, the developed medium is fogged to create a latent image layer of silver precipitating nuclei. Finally, the fogged medium is placed in a monobath comprising a weak silver-halide reducing agent and a rapid-acting silver-halide solvent for partial chemical development and substantial physical development. The resulting product displays areas of low reflectivity, which correspond to the transmissive areas of the master, in a reflective field.
Patent GB-2054448-A (GB)
Title: Production of moulded bodies with surface coatings
IPC: B29C37/00
Filed: 1980-07-02
Abstract: A moulded body 2, having a surface coating 3 and a plastics material body 2.1 having a lower melting point than that of the coating, (e.g. metal, oxide or carbide) is made by introduction of the plastics material into a mould 1 onto the heat-resistant mould face 1.1 of which the coating agent 3 has previously been applied to form a layer which can combine indirectly with the plastics body 2.1. The coating of the mould face 1.1 is effected by thermal spraying of the coating medium 3 with the mould face 1.1 at a considerably lower temperature than the temperature of the impinging coating medium, and the subsequent introduction of the plastics material into the mould 1 is effected at the earliest upon cooling of the coating medium 3 to the temperature of the plastics material 2.1. <IMAGE>
Patent GB-2060863-A (GB)
Title: Wall bracing in double walled containers more particularly dewar flasks
IPC: A47J41/02
Filed: 1980-10-16
Abstract: A double-wall vessel has its inner walls spaced from the outer wall by a plurality of insulating spacers, each of which includes a thread stud affixed to one of the walls and reaching toward the other, the length of the stud being greater than the spacing tolerance of the vessel. On each thread stud is screwed a support body of thermally insulating material and arranged such that, wherein the body is screwed fully onto its stud, its maximum distance from the wall on which the stud is mounted is not greater than the minimum spacing between the two walls.
Patent GB-2088321-A (GB)
Title: Bucket loader
IPC: B60P1/48
Filed: 1980-11-11
Abstract: The invention provides an industrial bucket (1) the lateral sides of which comprise, at their rims, flanges (7) the undersurface (9) of which constitutes a slideway extending from one end of the bucket to about three quarters of the way towards the opposite end of the bucket. Each slideway forms a shallow inverted "V" shape providing an apex (11) located slightly towards one end from the transverse central plane of the bucket. The invention also provides a vehicle borne on-load, off- load mechanism comprising, a pair of pivotable arms (21) operated by piston and cylinder units (23) and bearing adjacent their extremities, respective rollers (25). With the arms more or less horizontal and extending rearwardly of the vehicle, the latter is manoeuvred so that on moving the arms clockwise, the rollers (25) can be lodged in the apices of the sideways. The bucket can then be lifted, in a balanced condition by further clockwise movement of the arms to be deposited on the vehicle. <IMAGE>
Patent GB-2079892-A (GB)
Title: Belt gearing
IPC: F16H7/16
Filed: 1980-12-16
Abstract: In transmitting rotary power from a driving wheel to a driven wheel 10 through a belt 17, the disclosed belt gearing uses an annular outside wheel 14 with either the driving or driven wheel, said annular outside wheel having an internal gear formed on inner circumferential surface thereof so as to operatively engage the outer circumferential surface of an inner wheel 12 disposed in the central hollow portion thereof, in order to transmit power from the outside wheel to the wheel therein. The belt extends between the outer circumferential surface of the outside wheel and the remaining one of said driving and driven wheels, and the outside wheel is displaceable relative to the inner wheel to adjust automatically the tension of said belt. The belt gearing may include a means to prevent said internal gear of the outside wheel from disengaging from said inner wheel. <IMAGE>
Patent GB-2090121-A (GB)
Title: Shelf support system
IPC: A47B57/04
Filed: 1980-12-19
Abstract: In a series of spaced uprights (12, 30), each upright has a series of laterally directed lugs (17, 34) projecting from at least one side at vertically spaced intervals, and brackets (20, 35) having upwardly opening slots (21, 36) and downwardly opening slots (22, 37) are arranged to be engaged on the lugs by a combination of vertical and rotational movement. The brackets may be engageable at a plurality of different predetermined inclinations. They may be single or double cantilever. <IMAGE>
Patent GB-2091408-A (GB)
Title: A Burner for a Boiler
IPC: F23D11/44
Filed: 1981-01-15
Abstract: A burner 10 for a boiler comprises a nozzle 11, with a mixing chamber 14 and a port 16, a conduit 17 connecting the port to the chamber, means 15 for supplying pressurized air into chamber 14, means 18 for introducing liquid fuel into the conduit so as to vapourize the fuel, ignition means 19 and means 22 for supplying combustion air into the nozzle in a tangential direction. Gaseous fuel may be used instead of or in combination with liquid fuel and is supplied at 26. The burner can be used in combination with a two-pass or a three-pass boiler. Fig. 4 or Fig. 6 (not shown). <IMAGE>
Patent GB-2072401-A (GB)
Title: Liquid crystal display device:- Sealing
IPC: G02F1/1339
Filed: 1981-02-27
Abstract: In a liquid crystal half-tone display device, e.g. for TV, with multiplex number N (duty cycle = 1/N), having transparent electrodes bearing insulated orienting layers on the inner faces of substrates 4 carrying polarisers, the liquid crystal material being nematic and exhibiting depolarisation, the cut-off frequency fc (Hz) of dynamic scattering is adjusted by heavy doping to lie between 8 N.F   <IMAGE> where F (Hz) is the frame frequency, C is the capacitance per unit area of the insulating layers and C0 is the same for a dielectric constant of 4 and thickness 100 Angstrom. To reduce the ingress of air and moisture, the substrates are sealed with an outer ring 13 of thermoplastic polyamide surrounding an inner ring 12 of saturated polyester of higher melting point, the spacing possibly being controlled by short lengths of glass fibre in the gap. <IMAGE>
Patent GB-2084459-A (GB)
Title: Adjustable display device
IPC: A47F5/08
Filed: 1981-03-30
Abstract: The device, which enables goods to be displayed thereon at an angle to an approaching customer, comprises a pair of display panels 28, 30 adapted to support merchandise thereon, a hinge member 32 engageable with corresponding front edges of the said pair of panels whereby they may be moved from a substantially parallel position in relation to each other to a V-shaped position, and bracket securing means for releasably securing rear edges of the said pair of display panels to a point-of-purchase display panel when the said pair of display panels are in an open V- position at a desired angle. The securing means may comprise extension members 34, 36 having a T- shaped formation for cooperation with brackets 38, or three-piece sets comprising brackets 202, V-shaped retaining members 231 and screws 206. <IMAGE>
Patent GB-2133176-A (GB)
Title: Vehicle guidance system
Inventor: TILBURY ROYSTON HUGH
IPC: G05D1/02
Filed: 1981-08-19
Abstract: The invention provides a wire vehicle guidance system in which the vehicle can make limited movements off the wire. The vehicle carries a control system comprising a position monitor which indicates the position of the vehicle relative to the path network, a route memory for storing data indicative of a route to be followed by the vehicle through the network, a steering control memory for storing data indicative of the course to be steered by the vehicle away from the wire track when turning from one path onto an intersecting path, means for determining from the position monitor when a point is reached along a vehicle's route at which the vehicle must start a turn onto an intersecting path, and means for enabling the wire following means to steer the vehicle after a turning point is reached in accordance with data derived from the steering control memory and to detect and follow the wire track of the said intersecting path after a turn has been completed.
Patent GB-2099074-A (GB)
Title: I.C. engine carburetted mixture atomiser
IPC: F02B1/04
Filed: 1981-10-20
Abstract: A gauze 11 or a perforated plate (33), Figs. 4 and 5 (not shown), extends across a mixture flow path in an engine intake manifold (3), Fig. 1 (not shown), and a reservoir 19 or (41), Figs. 4 and 5, extends diametrically of the gauze or plate to collect unvaporised fuel. <IMAGE>
Patent GB-2111458-A (GB)
Title: Maritime crane
Inventor: WILLEM HENDRIK
IPC: B66C23/52
Filed: 1981-12-16
Abstract: A crane specifically designed for maritime use for deck mounting comprises a pedestal (10) and a base frame (12) rotatable about a vertical axis relative to the pedestal (10). The base frame (12) supports a telescopically collapsible main boom (22) in a manner permitting pivotal movement about a horizontal axis (24). Hydraulic cylinders are provided for extending and retracting the telescopic main boom (22) and hydraulic cylinders (6) are also provided for raising and lowering the boom (22). A pulley (26) is mounted at the free end of the main boom (22) and a single line (28) is guided over the pulley (26) for carrying loads. The line (28) is wound about a constant tension winch (16) mounted on the base frame (12). As shown, with the boom (22) horizontal, the constant tension winch (16) is snugly received between cranked end (20) of the boom (22) and a raised support strut (18), while an operator's cabin may be mounted on the base frame (12), which may rotate through 360 DEG . <IMAGE>
Patent GB-2107595-A (GB)
Title: Puzzle
Inventor: CHENG CHIT LEONG
IPC: A63F9/08
Filed: 1982-02-16
Abstract: The puzzle has a spherical guide body (101) having guide grooves (102) and guide clamps (shaded parts) mounted resiliently on the surface thereof by means of screws (104) and springs (114). A plurality of external segments (100) slide along the grooves (102), and are retained by circular lugs (105) engaging the undersides of the clamps. The segments (100) are movable in groups with respect to the remaining segments, the guide grooves and clamps being such that in any given position of segments each segment can be moved as a member of any one of a plurality of groups. The puzzle has the shape of an icosahedron or dodecahedron. <IMAGE>
Patent GB-2094896-A (GB)
Title: Impellers and processes for producing them by moulding
IPC: F04D29/22
Filed: 1982-03-15
Abstract: A pump impeller comprises a hub surrounded by a web which is a surface of revolution about, and whose imaginary projection intersects, the hub axis, the web carrying helico- centrifugal vanes with both faces of each vane parallel and formed as acute helicoids about the hub axis. The impeller is made by constructing a plastic pattern having vanes 12, using the pattern to form a sand mould, withdrawing the pattern from the sand with a helical movement and then filling the mould cavities with liquid metal. <IMAGE>
Patent GB-2095688-A (GB)
Title: Preparation of a polymeric substance
IPC: C08F2/00
Filed: 1982-03-26
Abstract: A process for the preparation of a polymeric substance or a liquid product containing a polymeric substance, comprises at least two unit steps of polymerizing a polymerizable monomer or a mixture of at least two monomers copolymerizable with each other in which cold heat, obtained by an absorption type refrigerating method using polymerization heat generated during polymerization and/or remaining heat from other unit steps as the heat source, is used as the cold heat source for at least one other unit step that requires cooling below normal ambient temperature. Such a process reduces the amount of energy required to produce polymeric substances.
Patent GB-2096222-A (GB)
Title: Window insulation system
IPC: A47H1/13
Filed: 1982-04-02
Abstract: A thermal insulation system for a window comprising a roller blind carried by a roller blind mechanism which is arranged to be fixed to a window frame above a window to be insulated. The blind is adapted to be detachably connectable to the window frame by means of touch fastener (Velcro) strips carried by the longitudinal side edges and the free transverse edge of the blind and mating touch fastener strips carried by the frame. A mounting mechanism for the roller blind enables it to be selectively displaceable for sealing the upper end of the blind.
Patent GB-2097360-A (GB)
Title: A manipulator
IPC: B25J11/00
Filed: 1982-04-21
Abstract: A manipulator has at least one pivotal joint 104 controlled by a rotary flexible shaft 121. A worm gear 114 connected to the flexible shaft 121 and meshed with a worm gear wheel 102 at the pivotal joint 104 effects pivotal movement of the joint 104, the rotary flexible shaft 121 being driven by an electric stepping motor. <IMAGE>
Patent GB-2121642-A (GB)
Title: Error concealment in digital television signals
Inventor: WILKINSON JAMES HEDLEY
IPC: H04N5/94
Filed: 1982-05-26
Abstract: A method of concealing errors in a digital television signal formed by a plurality of sample signals corresponding respectively to sample positions S-3, S-2, S-1, S0, S1, S2, S3, etc. along a horizontal scan line of a television picture made up of a plurality of such lines n-1, n, n+1, etc., comprises, in respect of each sample signal which is in error, selecting from a plurality of algorithms a preferred algorithm for correcting the error sample signal, calculating a corrected value of the error sample signal using the preferred algorithm, and substituting the corrected sample signal for the error sample signal so as to conceal the error. The algorithms may be four in number and use sample values located along the directions A, B, C and D respectively to predict the known sample values at sample positions adjacent to the position of the error sample signal, the algorithm giving the best result being selected. When the density of other error sample signals in the neighbourhood of the error sample signal prevents selection of the preferred algorithm, the sample signal from a predetermined or a selected position in the television picture adjacent to the position of the error sample signal is substituted for the error sample signal so as to conceal the error.
Patent GB-2107974-A (GB)
Title: A bag
Inventor: GOLDSMID JACK
IPC: A45C3/00
Filed: 1982-08-11
Abstract: A bag (1) of a substantially uniform cross-section has a wrapping (11) adapted to envelope the bag, and two-part fastening means for retaining the wrapping in the enveloping position on the bag. As described the wrapping is a separate rectangular laminated pad and has "Velcro" (RTM) fasteners adjacent its ends. Alternatively press-studs or a slide fastener may be used. The bag is divided transversely into a series of compartments with zip closures. <IMAGE>
Patent GB-2108108-A (GB)
Title: Novel 1,4-dihydropyridine derivatives
Inventor: MASATO KAMIBAYASHI
IPC: C07D211/78
Filed: 1982-08-11
Abstract: Novel 1,4-dihydropyridine derivatives of the formula [I] are provided:   <IMAGE> wherein R<1> represents a C1-4 alkyl group or a C3-6 alkoxyalkyl group, R<2> represents hydrogen or halogen, R<3> is either nitro when R<2> is hydrogen, or halogen when R<2> is halogen, R<4> represents a C1-8 alkyl group, a pyridyl group, a phenethyl group, an unsubstituted benzyl group, a substituted benzyl group having one or more suitable substituents, an unsubstituted phenyl group, or a substituted phenyl group having one or more suitable substituents, and A represents an unsubstituted hexamethylene group or a substituted hexamethylene group having one or two C1-3 alkyl groups. The 1,4- dihydropyridine derivatives have vasodilating and hypotensive activity which is kept for a long period, and are useful in the treatment of cardiovascular disease and hypertension.
Patent GB-2125748-A (GB)
Title: Electric vehicle systems
Inventor: ROUSE DAVID GEORGE
IPC: A63H18/12
Filed: 1982-08-21
Abstract: An electric vehicle (particularly a model vehicle) system comprises a surface including discrete areas e.g. strips 2, 3, of conductive material with sources of different electric type, e.g. positive and negative d.c., applied thereto, and an electric vehicle which has, e.g. four, pickups 6'-9' connected via isolators, e.g. diode rectifiers, to positive and negative lines in the vehicle so that the pick-ups are not source type sensitive. Control signals for steering, speed, forward/reverse, brakes and lights may also be communicated to a receiver/decoder within the vehicle via the pick-ups and the conductive areas. The conductive areas may be strips as shown or patches arranged in rows and columns, and may be inlaid in a base of isolating material to form track or board sections. <IMAGE>
Patent GB-2126437-A (GB)
Title: Semiconductor switching circuit
Inventor: BRADEN STEELE ANDREW BEAUMONT
IPC: H03K17/735
Filed: 1982-08-27
Abstract: The circuit is for switching an alternating current supply to a load and comprises a thyristor (1, 2, 3) with a first terminal connected to the load and a second terminal connected with an alternating current supply and a gate electrode which is connected with the output of a gate control circuit, an input of said gate control circuit being connected to said alternating current supply and a switching means (29) included in the gate control circuit operable to enable current to flow through the gate circuit, the gate control circuit providing an output signal which turns on the thyristor to connect the supply to the load upon said alternating current flowing through said gate control circuit. In one example, the load comprises a three phase motor 30 connected to the supply through three triacs 1,2,3. The triacs are fired by a circuit which includes a start button 25, a stop button 24, and thyristor 29 and a transformer 19. The invention thus provides a semi-conductor switching circuit of "solid state" construction which enables stopping and starting of, for example, a three phase motor and which overcomes one of the major problems of hitherto available mechanical motor starters, that is, contact wear due to repeated sparking of the contacts resulting from the inductive load being switched. <IMAGE>
Patent GB-2111274-A (GB)
Title: Determining emergency action codes
Inventor: PIDDINGTON JOHN
IPC: G06F3/147
Filed: 1982-11-10
Abstract: Apparatus for determining the emergency action code to be displayed on a vehicle carrying two or more dangerous substances, comprises a set of keys by which the emergency action code of each of the substances is fed into the apparatus, a programmable logic device for producing data corresponding to the required emergency action code from the data received from the keys and a display for displaying the required emergency action code. <IMAGE>
Patent GB-2133609-A (GB)
Title: Electric storage cells
Inventor: CUNDALL DAVID JAMES
IPC: H01M50/562
Filed: 1983-01-12
Abstract: A lead acid cell includes a container having a well formed in the lid 4 through a hole 10 in the floor of which a circular section terminal pillar 8 projects from within the container. A sealing ring 13 extends around and contacts the terminal pillar and the floor of the well and biasing means 14 engage the terminal pillar and bias the sealing ring into contact with the floor of the well. The well is filled with synthetic resin material 22. <IMAGE>
Patent GB-2138122-A (GB)
Title: Heating system
Inventor: RIKKER LOUIS
IPC: F24D11/02
Filed: 1983-04-12
Abstract: A heating system comprises a solar collector (10), a temperature sensor (30) responsive to the temperature of the heat transfer liquid passed therethrough, a heat pump including an evaporator (22), heat exchanger means embodying a condenser (16) for heating the heat exchange liquid, and a compressor (20), a liquid storage tank (2) and a pump (8) for circulating the heat transfer liquid around the system. A valve (28), controlled by the sensor (30), controls the flow of heat transfer liquid through the solar collector and through the condenser. <IMAGE>