baber/WOPTO huggingface dataset:
Patent GB-696821-A (GB)
Abstract: 696,821. Electromagnetic relays. NALDER BROS, & THOMPSON, Ltd. and LIPMAN, C. L. Nov. 1, 1951 [Aug. 2, 1950], No. 19352/50. Class 38 (v) [Also in Group XXXVI] A moving coil instrument or relay has a core plate constructed to provide at least two independent local paths for flux due to the separate moving coils, or at least one moving coil and a moving conductor such as a damping conductor forming a closed circuit. In the measuring instrument shown in plan in Fig. 1 and sectional elevation in Fig. 2, the core plate is made in right and left hand halves CPR, CPL mounted side by side in the same plane. Moving coils CR, CL are carried by a spindle S and move in the air gaps GR, GL between the core plates CPR, CPL and soft iron pole pieces PR, PL. These are fixed to the pole of a common permanent or electromagnet M or to the poles of separate magnets. The end of the parallel limb portions of the separate halves of the core plate may be open as shown at BR, BL, or they may be joined to provide a closed magnetic circuit. The space A between the half plates CPR, CPL may be an air gap or may be filled with a non-magnetic or a magnetic material. A block of iron may be arranged to slide in or out of the space A or the gaps BR, BL for torque adjustment. For use in a DC instrument the half plates may be made solid. The curved portions of the half plates embraced by the moving coils may be of tapering cross section as shown in Fig. 4. The limbs of the separate halves of the core plates may be arranged to lie one above another instead of side by side, the moving coils being mounted one above the other on the same side of the spindle. Two similar assemblies may be mounted side by side, the movement including four moving coils, one of which may be of short-circuited turn forming a damper. The individual limbs of the separate halves of the core plate may be arranged to lie one above the other as shown in Figs. 11 and 12. Figs. 14, 15 and 16 are' plan, sectional elevation, and side views of a construction for a long-scale instrument, each portion of the composite core plate being formed with a substantially complete circular or annular portion about which a cooperating coil may travel. The core plates may be constituted by magnets, thus eliminating separate energizing magnets. The invention is applicable for D.C. and A.C. relays and to the construction of differential impedance and biased relays. An instrument may have two or more moving coil systems each associated with a core plate or a portion of a core plate, one system being responsive to a D.C. quantity and the other to an A.C. or rectified A.C. quantity, the resultant torque being the sum, difference, or ratio of the individual torques. Specifications 456,988, 469,938, 574,894, and 627,327 are referred to.
Patent GB-2022574-A (GB)
Title: Preparation of [mono (trichloro) tetra (monopotassium dichloro)] penta isocyanurate
IPC: C07D251/36
Filed: 1978-06-07
Abstract: The invention relates to the preparation of crystalline [(mono-trichloro) tetra-(monopotassium dichloro)] penta- isocyanurate by reacting an unsubstituted or amino substituted triazine with at least stoichiometric amounts of potassium hypochlorite in an aqueous medium at a temperature of 35 DEG  to 70 DEG C and at a pH value of 3.2 to 5.7 for less than about five minutes.
Patent GB-2024003-A (GB)
Title: A display stand for spectacles
IPC: A47F7/024
Filed: 1978-06-26
Abstract: The stand comprises six contiguous rectangular panels (11) which, in plan view, form a regular hexagon. Each of the panels (11) has a plurality of pairs of vertically extending elongate slots (18). Each panel (11) also has projecting outwardly therefrom a plurality of pins (20) located between each pair of slots. Each panel (11) also is provided with an additional row of elongate slots (19) located above the respective pins (20). On the inside of each panel (11) there is slidably located a vertically extending elongate bar (27) each bar having a plurality of longitudinally spaced arms (29) each having the shape of a right angle. Pairs of spectacles (35) are located with the arms (38) thereof extending through the first slots (18) and the bridge portions (37) thereof located on the pins (20). The spectacles are retained on the pins (20) by the arms (29). <IMAGE>
Patent GB-2031160-A (GB)
Title: Environmental testing apparatus
IPC: G01M7/02
Filed: 1978-10-05
Abstract: An environmental testing apparatus comprises a vibrator 2 having a vibrator table 6 and a test chamber 4. The vibrator table carries a number of support pillars 12 which pass through e.g. a cover plate 14 sealing a hole in the floor of the chamber and which in turn carry an extension vibrator table 16. The chamber is sealed against the atmosphere by e.g. a sealing bellows 20 around each pillar. An inflatable air bag 22 or spring (not shown) between the vibrator table and the bottom of the chamber exerts a biasing force on the vibrating parts equal and opposite to the force exerted on them by virtue of a reduced pressure in the chamber. <IMAGE>
Patent GB-2031143-A (GB)
Title: System for indicating the level of material in a container
IPC: G01F23/288
Filed: 1978-10-09
Abstract: In a radiation detecting system for controlling the level of material in a container, the first counter 13 accumulates pulses generated by a geiger tube 12 at a rate related to the level of material and a second counter 14 accumulates clock pulses. A race condition is established between a NAND circuit 24 indicating that the first counter has reached a predetermined total, and a NAND circuit 25 indicating that the second counter 14 has reached a second predetermined total representing a fixed counting interval. The first NAND circuit to respond to its predetermined total actuates circuit 26 to reset both counters and, if indicative of the material level being below a predetermined minimum, actuates an alarm or operates a control circuit 17, 18 to add material to the container. In the example shown, an additional NAND circuit 27 responds to a different count in the counter 13, which count in the same time interval corresponds to a higher level, and when material is being added to the container, the race condition is between the NAND circuit 27 and the NAND circuit 25. The effect of this is to provide a hysteresis effect preventing the circuit from "hunting" around one level of material. <IMAGE>
Patent GB-2041724-A (GB)
Title: Protective helmet
IPC: A42B3/32
Filed: 1979-02-16
Abstract: A protective helmet comprises a casing 2 made up of two releasably interconnected panels 4, 6. This allows easy removal of at least part of the helmet after an accident, so minimising secondary injury. <IMAGE>
Patent GB-2015604-A (GB)
Title: Air laying bonded fibre structures
IPC: B01D39/16
Filed: 1979-02-27
Abstract: A method of preparing dry-laid fibrous products comprising the steps of defibrating cellulose pulp to form a stream of gas containing suspended cellulose fibres, distributing said fibres over the surface of a gas permeable forming surface to form a fibrous layer thereon and introducing a binder into said fibrous layer by supplying the binder to the cellulose pulp or to the stream of gas containing suspended fibres. The concentration of binder may be varied across the width, breadth and thickness of the layer. The layer may be coated, laminated and/or hot embossed. <IMAGE>
Patent GB-2018230-A (GB)
Title: Manufacture of spheroidal alumina particles
IPC: B01J21/04
Filed: 1979-03-05
Abstract: The invention seeks to provide a method of preparing spheroidal alumina particles of improved physical stability and substantially free from the stress cracks and fractures typical of the prior art. According to the invention alumina hydrogel particles prepared by the oil-drop method are aged in the forming oil at about atmospheric pressure conditions and at a temperature of from 95 DEG  to 105 DEG C until the hydrogel spheres achieve a pH of from 6 to 7.5. The forming oil is thereafter displaced with an ammonium salt-buffered aqueous ammoniacal solution containing from 0.5 to 10 wt. % ammonium salt and from 0.1 to 1 wt. % ammonia, and the hydrogen spheres aged therein for a brief period of at least 10 minutes. After further aging in an aqueous ammoniacal solution in accordance with prior art practice, the spheres are water-washed, dried and calcined. The spheroidal alumna particles are mainly used as supports for reforming catalysts comprising Pt group metals with or without Sn, Re, Ge and/or Co component.
Patent GB-2018741-A (GB)
Title: Ceramic dielectric material
IPC: C04B35/468
Filed: 1978-08-24
Abstract: A material comprising 100 parts by weight of a basic composition of which 40 to 90 mol % consists of BaTiO3 and the rest consists of CaTiO3, also contains 1 to 10 parts by weight of Ba(Na 1 DIVIDED 4, V 3 DIVIDED 4)O3, and 0 or 0.1 to 3.0 parts by weight of one or more of the oxides MnO2, Bi2O3, Al2O3, Fe2O3, TiO2, SnO2, SiO2, CuO and CoO.
Patent GB-2026076-A (GB)
Title: A dismantable partitioning system
IPC: E04B2/78
Filed: 1979-04-06
Abstract: A dismantable partitioning system comprises a plurality of wall elements 8 erected adjacent to uprights 1 which can be braced between the ceiling and floor. The uprights comprise rectangular aluminium tubes 1, having recesses 4, which are spaced from one another to receive one or more wall elements 8. The upper end 2 of the upright has a screw-threaded bolt 3 for bracing the upright against the ceiling. In an alternative arrangement the upright has a U-shaped rail 6 instead of the recess 4. The lower end of the upright has a floor protector. Floor sealing strips are also provided. Partition panels may be connected adjacent one another without intermediate uprights by means of keyhole slot and headed pin connections. <IMAGE>
Patent GB-2020419-A (GB)
Title: Signal sensor
IPC: G01H9/00
Filed: 1979-05-01
Abstract: The presence or magnitude of a signal 5 is sensed by a signal transducer 4 around which an optical fibre 1 is wrapped so that the length of the fibre is modulated by any signal present. A laser supplies coherent light to one end of the fibre and a homodyne detector 3 is provided at the other end. Discontinuities at both ends of the fibre cause multiple reflections which produce differential phase modulations of the signal. The detected signal contains a large number of frequency components and the peak frequency is related to the amplitude of the original signal. The peak frequency is indicated by a suitable filter arrangement. The signal to be sensed may be electrical, in which case transducer 4 is a piezo crystal; alternatively, if the signal is a vibration, it can be mechanically or acoustically coupled to the body 4. <IMAGE>
Patent GB-2048507-A (GB)
Title: Optical fibre connectors
IPC: G02B6/38
Filed: 1979-05-02
Abstract: A sphere lens 11 is accurately located relative to the end of an optical fibre 6 by arranging that the optical fibre is received by an interstice formed between three identical inter-engaging balls 8, 9, 10 located in the same plane at right-angles to the axis of the optical fibre and the sphere lens is seated in a recess presented by surfaces of the three balls on the side thereof remote from the side of entry of the optical fibre into said interstice, the end of said optical fibre preferably being bonded to the sphere lens. The balls may remain in situ or be removed. <IMAGE>
Patent GB-2022500-A (GB)
Title: Multi-impression injection mould, runner system
IPC: B29C45/27
Filed: 1979-05-04
Abstract: Due to differing degrees of wall roughness of runners/branch runners 3,4 of a multi-impression injection mould having a central sprue passageway 2 and due to the runners/branch runners 3,4 having cross-sectional areas which are different from one another, the quality of mouldings formed in individual impressions can vary. The roughness leads to differences in melt speed along the runners 3,4 and consequent unequal heating and hardening. Different cross-section areas lead to unequal melt distribution and different impression-filling speeds. These disadvantages are overcome by providing a distribution element 6, extending along said sprue passageway 2, in the transition zone 5 between the passageway 2 and the runners 3,4. This has the effect of increasing the pressure of a plastics or elastomeric melt in any runner in which the melt speed has dropped below that in others, thereby restoring equality of melt speed in all runners. The position or attitude of the distribution element 6 is alterable. <IMAGE>
Patent GB-2018301-A (GB)
Title: Improvements in textile colouring
IPC: D06L4/657
Filed: 1979-05-16
Abstract: The fastness of textiles to which dyes or similar agents have been applied is improved by applying to the textile a polymer curable to a hydrophobic resin, and then curing the polymer. Preferred polymers are curable silicone polymers, and the method is especially useful for the treatment of wool textiles dyed with acid or other non-reactive dyes.
Patent GB-2029665-A (GB)
Title: Electronic still picture storage system
IPC: H04N5/91
Filed: 1979-08-16
Abstract: The system includes a storage medium such as a video tape recorder 12 on which picture information derived from and representing the same still picture is stored several times so that the tape eventually contains a number of still pictures each stored several times. On read out of a selected picture the information is received by a processor 13 which integrates the information from each of the repeatedly stored representations of this picture to provide noise reduced information. By integrating the information from the repeatedly stored pictures degradation due to shortcomings in the quality of the storage medium is removed. The still picture may have been obtained from a moving picture captured in a video store. The system may include arrangements for transmitting the picture information to a remote location. <IMAGE>
Patent GB-2059351-A (GB)
Title: Improvement in or relating to telephone indexes
IPC: B42F17/34
Filed: 1979-09-24
Abstract: A telephone index comprises a housing (12) forming a support for a telephone and a resiliently biased drawer slidable within the housing between open and closed positions. The drawer (14) has pivotally mounted fingers (40) aligned with selector buttons (18) for raising by a respective depressed selector button. A stack of index cards (24) is positioned on the drawer, the cards having cut-out portions engageable by a finger when it is raised by its respective selector button. The selector buttons have hooks (36) for engaging the front end of non-selected cards to prevent their movement when the tray moves to its open position with the entrained cards. <IMAGE>
Patent GB-2039451-A (GB)
Title: Coffee roaster
IPC: A23N12/08
Filed: 1979-12-28
Abstract: A coffee roaster and method of producing roast coffee in which roasting is automatically terminated by the provision in the roaster of a temperature sensing device (8) which detects the temperature of the coffee beans during the steps of stirring and roasting and produces at a predetermined appropriate temperature a signal which is used to terminate the roasting. <IMAGE>
Patent GB-2044012-A (GB)
Title: Circular polariser
IPC: H01P1/17
Filed: 1980-01-24
Abstract: A broad-band circular polariser comprises a waveguide 1 which has different cut-off frequencies for orthogonal linear polarisations, and which has, spaced opposite each other on the inside 2 of the waveguide 1, two parallel sets of periodically arranged parallel transverse slots 3 and 4, each set of slots 3, 4 extending along substantially the whole length of the waveguide. Depending on the cross sectional shape and dimensions of the waveguide, and the dimensions of the slots 3 and 4, the polariser can be arranged to operate over two separate frequency bands or a single broader frequency band. A waveguide of square cross-section having sets of periodically arranged slots on both pairs of opposite sides, is also described (Fig. 7). A circular waveguide with opposite sets of segmental slots may also be used. <IMAGE>
Patent GB-2074525-A (GB)
Title: Self-aligning roller for belt conveyors
IPC: B65G39/071
Filed: 1980-02-01
Abstract: A roller 17 is mounted by a central bearing 21 for universal angular movement relatively to its nominal longitudinal axis of rotation so as to be angularly displaced by the weight and movement of the conveyor belt when the conveyor belt shifts away from running true. This angular displacement brings the rotating roller into engagement with reaction faces 28 provided on the frame of the conveyor and causes the roller to be reactively displaced in a direction to restore the belt to running true. <IMAGE>
Patent GB-2073598-A (GB)
Title: Appliance for game or sport purposes
IPC: A63B69/36
Filed: 1980-02-08
Abstract: An appliance for use, for example, in putting practice for golf, comprises a target in the form of a plate supported on legs (16) clear of the ground and if desired with outrigged legs carried by swivelling arms (20). An object pin (22) marks the plate centre, the plate and swivelling arms each have a series of peg-receiving holes (14, 21) to allow a string (24) to be trained from the object pin around the pegs (23) to a remote point to define a line of travel of a ball towards the target. <IMAGE>
Patent GB-2047132-A (GB)
Title: Chip conveying system
IPC: B65G19/04
Filed: 1980-03-27
Abstract: A plant for the conveyance of chips supplied to a chip collector channel (12) comprises a conveyor chain (21) formed by rings (22-23) alternate ones of which are disposed in perpendicular planes annularly wound about pulleys (14-18) to form a lower conveyor run (26) and an upper return run (27), the said runs being guided in the collector channel by respective channel- like guides (28-29), the lower guide (28) having a W-shaped cross-section with the concavity turned upwards. <IMAGE>
Patent GB-2048587-A (GB)
Title: Interconnection device for interconnecting a blood pressure monitor and a blood pressure waveform simulator device
IPC: H01R13/66
Filed: 1979-08-31
Abstract: The interconnection device (152) is in the form of a cable (154) having a connector (156, 158) at each end. The cable (154) comprises a plurality of insulated conductors (172-188). A plurality of resistors (R58-R61) are provided to make a blood pressure waveform simulator to which connector (156) is connected compatible with a blood pressure monitor to which connector (158) is connected regardless of the type of blood pressure monitor being used. The resistors (R58-R61) are each connected at one end to a respective conductor (180-186). The other end of the resistors (R58-R61) are connected to a common conductor (180). Resistors (R58-R61) have different resistance values which provide different static pressure reading to the blood pressure monitor. <IMAGE>
Patent GB-2078302-A (GB)
Title: An induction nozzle
IPC: F04F5/16
Filed: 1980-05-23
Abstract: An induction nozzle includes a primary fluid pipe (10) having an inlet end (11), a discharge end (12) and one or more apertures (13) in its wall. A secondary fluid pipe (14) extends in the primary fluid pipe from the or each aperture (13) at least towards and preferably beyond the discharge end of the primary fluid pipe. The or each secondary fluid pipe converges on a longitudinal centre line of the primary fluid pipe. <IMAGE>
Patent GB-2080400-A (GB)
Title: Improvements in and relating to hinges
IPC: E04F17/12
Filed: 1980-07-09
Abstract: A hinge, particularly for use between the door (13) and chute assembly (15) of a waste disposal system, comprises a channel (28) secured to the assembly (15) and defining a slot in which rests a hinge bar 30 which is secured to the door (13) and extends between holes in plates (28) which are removably secured, together with short channel lengths (27) to the assembly (15). The hinge bar is preferably greased to seal the door against the agress of dust, smells and the like. <IMAGE>
Patent GB-2058344-A (GB)
Title: Electro-optical Inspection of Workpieces
IPC: G01B11/245
Filed: 1980-09-04
Abstract: Apparatus for inspecting an elongate workpiece such as a camshaft having cam lobes 140 and 141, comprises a pair of centres 5, 6 for supporting the camshaft, the centre 5 being driven by a motor 7 having a shaft encoder 170. A sensor head comprises a light source 130, a lens 145 for forming an image 146 of the edge of the lobe 141 on a photodiode array 148 and a readout unit 160. In operation the camshaft is rotated and for every degree (for example) of movement, as indicated by the shaft encoder 170, the array 148 is scanned to determine the lift of the lobe at that particular angular position. At the end of a complete revolution the data obtained is compared with stored values by means of a computer 162, for an accept/reject decision. Traversing mechanism 180 may position successive cam lobes. Other embodiments use photodiode arrays for inspecting differently shaped workpieces. <IMAGE>
Patent GB-2061201-A (GB)
Title: Removable covering for an article such as a shoe or a vehicle tyre for improving the grip thereof
IPC: B60C27/18
Filed: 1980-10-03
Abstract: A removable covering for a running surface of articles, particularly of shoes or tyres, for improving the grip on a slippery surface consists of a carrier body (7) of elastic material, e.g. rubber, and at least one elastic, e.g. rubber, tape or band (6) fixed, e.g. vulcanised, to the carrier body and having fixed thereon friction-increasing material (5) e.g. stone or steel gravel or spikes. The carrier body is stretched over the article to securely fasten the covering on the article. The covering for a tyre may comprise a single band 6 carrying gravel as shown, or a zig-zag band or straight bands arranged circumferentially and carrying spikes. The covering for a shoe may comprise a tape to run around the edge of the sole and heel and carrying spikes for the sole and heel tips, and gravel fixed to the carrier body within the area bounded by the tape.   <IMAGE>
Patent GB-2071190-A (GB)
Title: Automotive vehicle door window glass run channel
IPC: E05D15/16
Filed: 1981-02-06
Abstract: A door window glass run channel for an automotive vehicle comprises an enlarged portion (6) protruding from a base having an essentially "U" shaped window guide channel (1) for guiding a window into the "U" shaped window guide channel (1). <IMAGE>
Patent GB-2071622-A (GB)
Title: Material-handling device
IPC: B65H29/32
Filed: 1981-02-13
Abstract: A materials handling device has a gripper assembly (12), for taking hold of and stacking the material, so arranged as to be capable of being moved along a transport track (10, 11). Along the transport track are arranged three or more limit switches (A, B, C) for the purpose of defining three or more stop positions for the gripper assembly (12). At least two of the limit switches (B, C) may be moved along the transport track so as to enable at least two of the stop positions to be changed independently of each other. The device may include means for sensing the distance travelled by the gripper assembly (12) along the transport track (10, 11), thus enabling the gripper assembly (12) to stop at pre-programmed positions. <IMAGE>
Patent GB-2075374-A (GB)
Title: Electrophotographic reproducing apparatus
IPC: G03G21/06
Filed: 1981-04-29
Abstract: An electrostatic device for removing the residual charge from paper matrices in an electrophotographic reproducing apparatus, of the type including a developing device comprising a drum or cylinder 1 fitted with head pliers 4 and tail pliers 7 for clamping the matrix 5 and a magnetic cylinder 9 for transferring the toner powder onto the matrix 5 on the drum or cylinder 1, and an electrostatic charger 10 located adjacent to the drum or cylinder 1 for removing the residual charge on the matrix. The magnetic cylinder 9 is connected to a supply of positive potential (eg 150 to 190 volt) different from that to which the electrostatic charger is connected (eg 4,500 to 6,000 volt), to achieve a more uniform removal of the residual charge on the matrix. <IMAGE>