baber/WOPTO huggingface dataset:
Patent GB-2018042-A (GB)
Title: Stator for an electrical machine
IPC: H02K5/15
Filed: 1979-03-16
Abstract: A stator for an electrical machine comprises a laminated core 3 and a respective end shield 1,2 secured at each end of the core. In order to align the co- operating end faces of the shields and the core in parallel relationship, in a simple manner, the end faces of the core are formed with depression 31, 33, 37, 38, 39 to afford abutment surfaces, 311, 331, 371, 381, 391 with which respective bearing surfaces of the end shields 1, 2 co-operate. The depressions may be formed advantageously by directly upsetting the end faces of the pre-assembled core 3. The invention is particularly applicable to stators of non- enclosed electric motors. <IMAGE>
Patent GB-2019974-A (GB)
Title: Mitred frame joint
IPC: E06B3/964
Filed: 1979-04-09
Abstract: A mitred frame joint is formed from two corner pieces 4, 5 which meet mitre-joint fashion at 6 and have their opposed ends 7, 8 cut square for abutting against the square ends of frame rails 1, 2. For holding the corner pieces and rails assembled there is an L-shaped connecting element 10 whose arms are inserted along channels provided in the corner pieces and into the ends of such rails, which have corresponding channels. Screws (not shown) can be screwed through holes 12 in such connecting element from the outer edge faces of the connecting pieces and rails so as to bear against the bottoms of the said channels, the lips of the holes being widened to receive the heads of the screws. <IMAGE>
Patent GB-2025747-A (GB)
Title: A Cutting Device for a Lawn Mower
IPC: A01D34/82
Filed: 1979-07-10
Abstract: A cutting device for a horizontal rotor lawn mower is provided with rotatable shaft 2 fixedly carrying a disc 4 provided with substantially radial vanes 10 and at least two cutter blades 5 rotatably integral with and spaced from the disc 4. When mounted in a lawn mower the disc 4 is substantially horizontal and the blades 5 located below the disc 4. The blades 5 are located radially outside the periphery of the disc 4 and the vanes 10 are distributed around the disc near its periphery and extend downwardly from the disc towards the cutter blades 5. <IMAGE>
Patent GB-2056030-A (GB)
Title: Controlling Solid Fuel & Air Supply to Boilers
IPC: F23N1/02
Filed: 1979-07-19
Abstract: A solid-fuel fired boiler has a fire grate (18), first air supply means for supplying primary air to pass through the fire grate, a feeder device (12, 13, 14, 15) for feeding solid-fuel onto the fire grate, second air supply means (19) for supplying secondary air to the firegrate, a control device operable as a function of boiler demand to control the operation of the feeder device and said first and second air supply means, and a banking device operable under conditions of zero boiler demand to maintain a fire bed on the fire grate. The banking device is coupled with the control means and includes a timer which is operable, upon initiation of zero boiler demand, to set a predetermined time interval. The banking device is operable, after the predetermined time interval, to operate the control device so that the latter effects operation of the feeder device for a predetermined period, and also operates the second air supply means only so as to burn the fuel fed onto the fire grate by the feeder device during said predetermined period and to maintain the fire bed on the fire grate. <IMAGE>
Patent GB-2033309-A (GB)
Title: Collapsible framework for a pushchair, seat, or trolley
IPC: B62B7/06
Filed: 1979-09-21
Abstract: The framework is of the 'fold flat' type and comprises four pairs of spaced apart parallel members 11, 16, 24 and 27, of which a first pair of members 11 and a third pair of members 24 are slidably connected together so that as they are brought into a position where they lie generally alongside each other they entrain connected second and fourth pairs of members, 16 and 27 respectively, and bring them into a position where they are substantially parallel thereto so that the frame in this folded condition is just over half the length it is in its use condition and is a thickness substantially the diameter of wheels 18. The frame is provided with a locking arrangement to prevent it from folding when in its use condition. <IMAGE>
Patent GB-2032035-A (GB)
Title: Pipes having a connecting end formation
IPC: F16L19/028
Filed: 1979-09-24
Abstract: A pipe 16 for example a vehicle brake pipe, having a connecting formation 17 at one end designed to cooperate with any one of a number of different forms of connecting formation on another pipe or other component, for example with an identical formation or a conventional formation 14, 15 having an outer end face of convex or concave form. The formation is constituted by a radially outwardly projecting flange having a generally convex outer end face comprising an intermediate annular part 19 of planar form and perpendicular to the pipe axis A and inner and outer annular parts 21, 20 of frusto-conical form adjoining the intermediate part. <IMAGE>
Patent GB-2035135-A (GB)
Title: Wallcoverings
IPC: D21H27/20
Filed: 1979-10-18
Abstract: A woodchip wallcovering has a coating of foamed thermoplastic polymeric composition. Preferably the wallcovering is of two ply construction with the wood content, which may chip, dust or flour, between the plies; is formulated so that the upper ply is dry removable from the lower ply; and is coated by a rotary screen printing machine.
Patent GB-2037120-A (GB)
Title: Moving a drawing scanning or other working device over the surface of a work piece
IPC: G01D9/40
Filed: 1979-10-31
Abstract: A workpiece in sheet of foil form is supported on a work table 2 shaped as a segment of a hollow cylinder. A drawing, engraving, cutting, milling, scanning or other working device 6 is carried on the end of swivel arm 4 which extends radially of a cross arm 3, this cross arm in turn extending along the axis of the work table. Rotation of the swivel arm about the cylindrical axis and bodily movement of the swivel arm along the axis provide the required displacement of the working device in respective coordinate directions. The swivel arm may be replaced by an axially adjustable optical system, the transmitting and/or receiving light beam effectively forming the swivel arm. The workpiece is held on the table by suction nozzles. <IMAGE>
Patent GB-2044643-A (GB)
Title: Positioning jig
IPC: B24D15/08
Filed: 1980-03-17
Abstract: A positioning jig, particularly suited to holding a squeegee whose blade (22) needs to be reshaped or dressed by a tool (14), comprises a support member (16) arranged to travel linearly past a guide (12), with locating studs (25,26) in the support member which receive and align the squeegee relative to the tool. The tool (14) and/or guide (12) can be advanced in step increments. <IMAGE>
Patent GB-2047424-A (GB)
Title: Infra red imager having rotatable prism
IPC: H04N3/09
Filed: 1980-03-28
Abstract: An infra red imager comprising a lens system 1 for focussing infra red radiation from a scene onto a rotatable refracting prism 3 which sweeps the scene across a parallel detector array 4. Output from the detectors is used to intensity modulate a display on a cathode ray tube 9 and hence provide a visible display of the thermal image. The prism has pairs of parallel faces angled to provide both a scanning of the scene in bands and an interlacing. An optional aperture stop 2 between the lens 1 and prism 3 allows the lens to be designed to correct for astigmatic error produced by the rotating prism. <IMAGE>
Patent GB-2048133-A (GB)
Title: A supporting and actuating device for a rotatable turntable for a machine tool
IPC: B23Q16/10
Filed: 1980-04-15
Abstract: A device for supporting and actuating a turntable 2 for a machine tool comprises a base member 3, a member 5 fitted for supporting the turntable 2 and mounted on the member 3 for rotation about a vertical axis and movement along said axis. The member 5 is fixed to a screw 13 which is screwed into a central threaded bore in an actuating member in the form of a gear 11 drivable in either direction about said axis. A dog clutch 8 engageable and disengageable by axial movement of the member 5 is provided between member 5 and member 3. A first one- way clutch arrangement 16 acts between the base member and the turntable supporting member and a second one-way clutch arrangement 21 acts between member 11 and member 5. The direction of rotation of said actuating member relative to the turntable supporting member in which the clutch 21 arrangement is freewheeling is opposite to the direction of rotation of the member 5 relative to the member 3 in which the clutch arrangement 16 is freewheeling, and the screw threaded engagement between screw 13 and gear 11 operates to move the member 5 axially relative to the member 11 and member 3, in consequence of rotational movement of the member 11 relative to the member 5 in order to effect engagement and disengagement of the dog clutch 8. <IMAGE>
Patent GB-2055977-A (GB)
Title: Hydraulic control systems
IPC: F15B13/042
Filed: 1980-07-24
Abstract: The system comprises normally closed pilot-operated holding valves 52, 52A which are physically located on or near the lift cylinders and are operable in response to pilot fluid controlled by a pilot control valve 48. A pressure equalization conduit 100 is connected between the pair of lift cylinders to prevent overloading of one cylinder. Fluid flow orifices 101, 101A are located in the pressure equalization conduit to prevent rapid fluid loss from the lift cylinders and uncontrolled load dropping in the event of fluid loss caused by equalization line breakage. In one embodiment, the pilot control valve for the lift cylinders is actuable in response to a directional control valve 47 for the lift cylinders, and pilot fluid is supplied to the holding valves from the raise side of the cylinders as the pilot control valve opens. In another embodiment, a manually operable pilot control valve supplies pilot fluid from an auxiliary pump to operate the directional control valve and the holding valves. In this latter embodiment, in the event of auxiliary pump failure, pilot fluid is supplied from the raise side of the lift cylinders. <IMAGE>
Patent GB-2056357-A (GB)
Title: Percussive tools
IPC: B25D9/04
Filed: 1980-08-11
Abstract: A percussive tool, especially for use in mining, quarrying or excavating, comprises a reciprocable mass 22 movable in one direction against the resistance of spring means 18 and in the opposite direction by the spring means to deliver an impact to a tool 34 or intermediate holder therefor, retractor means 54 for moving the mass in the aforesaid one direction and magnetic coupling means, e.g. magnet 62 and iron piston head 44, serving to couple the retractor means to the mass during its movement thereof until a predetermined spring loading is attained, whereupon the coupling is released. <IMAGE>
Patent GB-2064754-A (GB)
Title: Solar heater
IPC: F24S10/70
Filed: 1980-10-02
Abstract: A solar heater comprises an aluminum plate (11) adapted to receive heat from solar rays, a plurality of spaced tubes (12) secured to the plate and metallurgical bonds such as brazing joining the tubes to the aluminum plate in heat transfer relationship. As shown, the tubes extend between two headers (13, 14) and are engaged by tabs (18) which are integral with the plate. <IMAGE>
Patent GB-2069338-A (GB)
Title: Hip joint prosthesis
IPC: A61F2/34
Filed: 1981-01-16
Abstract: A joint socket for the spherical head of a hip joint endoprosthesis, comprises a rigid, wear-resistant plastics material insert arranged to receive the spherical head of an artificial hip joint within a spherical recess provided therein. This insert is located in a cylindrical cup arranged to be anchored in the pelvis of a patient, and is axially displaceable to a limited degree against an elastic buffer in the cup, which latter is made of metal or a ceramic material. Preferably the elastic buffer is in the form of a cylindrical disc and is incorporated in the cylindrical cup between a base thereof and the insert, and the outer peripheral rim of the insert is provided with a radial flange which is axially spaced from the rim of the cylindrical cup. <IMAGE>
Patent GB-2070400-A (GB)
Title: Electric heating panels
IPC: B32B27/12
Filed: 1981-02-17
Abstract: An electric blanket is made by feeding fabric outer layers 6, 8, optionally with an inner foam layer 18 on one or both, through pressure rollers 10, 12, with hot melt adhesive 28 or 34, in particulate, net, or sheet form, on one or both of the inner surfaces, the adhesive being heated 42, 44 to softening point upstream of the rollers, an electric heating wire harness 46 being introduced between the layers as they pass through the rollers 10, 12. The adhesive is chosen so as not to form a permanent bond with the insulating sheath of the heating wire. <IMAGE>
Patent GB-2093592-A (GB)
Title: Aircraft altimeter
IPC: G01C5/06
Filed: 1981-02-18
Abstract: An altimeter has a pressure transducer to sense atmospheric pressure at which an aircraft is located, and from this and a present local ground level atmospheric pressure reading, solves a non-linear altitude-pressure equation. The computed altitude is used in conjunction with a time measurement to determine aircraft vertical rate. The computed altitude also specifies an address in a memory circuit, with the data stored at such address being the grey code which is transmitted to others for air traffic control purposes.
Patent GB-2076845-A (GB)
Title: Plaster
IPC: C09D133/08
Filed: 1981-03-13
Abstract: Plaster containing a binder, mineral fillers and, if applicable, standard additives, is characterised in that when measured at -20 DEG C, it possesses a tensile strength sufficient to withstand the application of jerky tensile stress using the test procedure defined in the specification with a lever arm ratio of 4:1, a weight of 1Kp being dropped from a height of 1m, and the vertically movable clamping plate being displaced away from the fixed plate by a distance of 1.5mm limited by a stop. The binder is suitably an acrylic resin, especially a butyl acrylate resin.
Patent GB-2072536-A (GB)
Title: Nebuliser
IPC: A61M15/00
Filed: 1981-03-24
Abstract: The apparatus is self-contained for carriage in a pocket or handbag and comprises a nebulising chamber 12 from which tangentially extends an outlet tube 14 leading to a perpendicular head 15 provided with a mouthpiece 16. The chamber is cylindrical and houses a rotatable disc 25. An adjustable air inlet 30 is provided in the chamber and material to be nebulised is introduced to the chamber 12 through the mouth 14c. The disc 25 is driven by a battery and electric motor in the casing 29 and both draws air in through the inlet 30 and breaks up the material in the casing to nebulise it. Baffles 40, 41 control the size of particles expelled and a damping connection 44 reducing unpleasantness to the user from vibrations. <IMAGE>
Patent GB-2081565-A (GB)
Title: Cutting and conditioning crop
IPC: A01D43/10
Filed: 1981-08-06
Abstract: A crop cutting apparatus has two vertical axis rotary drum cutters 13, each having an upper rotor with a crop conveying surface 19 and a lower rotor carrying knives 21. Gears drive the upper and lower rotors at different angular velocities. The lower rotor has an annular rim 18 having an upper surface shaped to continue the outline of the conveying surface 19. The knives 21 protrude outwardly from beneath the rim 18 and rotate with the rim. A wiper brush 34 mounted on the conveying surface 19 projects outwardly over the rim 18 for lifting and transferring crop to the surface 19. The upper rotor may have conditioning brushes 35 for conveying crop and conditioning crop by relative movement between the brushes and the crop. The upper and lower rotors may be rotated in opposite senses to effect at least partial shear cutting. <IMAGE>
Patent GB-2087453-A (GB)
Title: Edge Rail
IPC: E04F19/04
Filed: 1981-09-22
Abstract: An edge support rail 6 for ceramic tiles 5 has a securing flange 61 and an end flange 68 defining a recess 64 for accommodating the front edges of abutting tiles 5. The rail 6 is made of brass or aluminium and provided with apertures 62 for the passage of an adhesive and a locating shoulder 65, 66. <IMAGE>
Patent GB-2085989-A (GB)
Title: Brake booster
IPC: F16B11/00
Filed: 1981-09-30
Abstract: The wall 1a of a brake booster housing 1 is provided with a reinforcement member 3 which is adhesively attached to the wall between each two adjacent bolts 8 by which the booster is connectable to a brake master cylinder body Ma. The reinforcement member may further be spot welded to the wall. <IMAGE>
Patent GB-2084689-A (GB)
Title: Belt gearing
IPC: F16H9/04
Filed: 1981-10-01
Abstract: A belt drive includes a pair of pulleys 14, 16, an oversized belt 18, spring means 30, 32 for tensioning the belt to bring it into contact with the pulley peripheries so that one pulley drives the other and means 40, 46 for holding the belt free from the pulleys when the tension is removed therefrom such that the pulleys are unconnected. Two such belt drives having pulleys of different diameter are mounted side-by- side on shafts 10, 12 to form a two- speed gear, the ratio of which is determined by which of belts 18, 20 is engaged by the tensioning means 30, 32. <IMAGE>
Patent GB-2100112-A (GB)
Title: A physical treatment for influencing biological activity
IPC: A01G7/04
Filed: 1982-06-01
Abstract: A method of influencing biological activity of living organisms such as seeds, eggs or plants which comprises generating electrically dependent oscillations, usually of audio frequency, and passing the oscillations via electrodes to a liquid medium such as tap water in which living organisms are immersed or to wet soil containing the living organisms so as to influence their germination, hatching or growth. As shown, seeds or eggs 8 are placed between two electrodes 1 supplied by signal generator 3 with wavelength control 6 and amplified by amplifier 4 with a frequency generated signal between 10 and 20000 Hz at 2-30 volts. <IMAGE>
Patent GB-2113145-A (GB)
Title: Armoured panel
Inventor: GLASTRA HENDRIK
IPC: B32B5/02
Filed: 1982-06-02
Abstract: A panel 6 of glass is armoured by a transparent armouring film (1) preferably made of polyester film and a second armouring element consisting of thin plastics wires (4). <IMAGE>
Patent GB-2111275-A (GB)
Title: Tablet input apparatus
Inventor: ABE KIYOMI
IPC: G06F3/033
Filed: 1982-11-15
Abstract: A set of row conductors and a set of column conductors of an input tablet are scanned in turn to identify the position of an input pen by counting scanning pulses, each set being scanned twice with comparison 38 of the two counts for equality (in case of noise), thus entering a symbol associated with a row-column intersection. When entering a large symbol which occupies two such intersections, a manual switch (in 35) causes one of the two detection pulses produced in each column scan (in this case) to be ignored. <IMAGE>
Patent GB-2130906-A (GB)
Title: Improvements in or relating to apparatus for dispensing a dust suspension
Inventor: BOUCHER ROBERT FRANCIS
IPC: B01F23/30
Filed: 1982-11-19
Abstract: Apparatus for dispensing fine, even suspensions of dust in gas includes a first deagglomeration stage in which, raw dust falls through a mass of metal balls 17 held captive in a vibrator 14. Dust leaving this stage falls through a cylindrical space, is there dispersed by gas from nozzles 20 mounted around the wall of the space and leaves that space through a downwardly-sloping duct 22, the finer particles being entrained within the gas stream and movement of the larger particles along the floor of the duct being aided by vibration. The duct 22 discharges into a vessel 35 where abed of the dust 25 mixed with metal balls is formed, and where further air passes upwards through the bed to fluidise it in passage and cause a fine suspension of dust in gas to rise from the upper surface of the bed, passing for instance to means to convert the suspension into a true aerosol before being discharged from the apparatus. <IMAGE>
Patent GB-2113125-A (GB)
Title: Safety device in a drill chuck
Inventor: ULLRICH WOLFGANG
IPC: B23B31/12
Filed: 1982-11-30
Abstract: A drill chuck, more particularly for impact drilling, has a number of clamping jaws 2 actuated by a threaded ring 3 with a pressed on clamping ring 4. An annular space 12 is formed between the threaded ring 3, the body 1 of the drill chuck and the clamping sleeve 4, and an inwardly acting spring clip 5 is disposed in such annular space 12 to normally maintain gap 9 between faces 10, 11 of the ring 3 and body 1. When the chuck key clamps jaws 2 onto the workpiece, gap 9 disappears and the spring clip 5 serves to maintain the sleeve 4, ring 3 and body 1 in this relative position during impact drilling. <IMAGE>
Patent GB-2131640-A (GB)
Title: Switching circuit
Inventor: SAUL PETER HENRY
IPC: H03K17/60
Filed: 1982-12-01
Abstract: A switching circuit suitable for realisation in bipolar integrated circuit technology and for high speed processes comprises a first transistor (Q1) of one polarity type having its base electrode coupled with an input (11) to be switched. The collector electrode of the first transistor is coupled with one side (10) of a source of supply potential and its emitter electrode is coupled with the circuit output (12). A second transistor (Q2) of the same polarity type has its collector electrode coupled with the base electrode of the first transistor (Q1), its base electrode coupled with a control input (13) and its emitter electrode coupled with the emitter electrode of a third transistor (Q3) again of the same polarity type. The third transistor (Q3) has its base electrode coupled with a second control input (15) and its collector electrode coupled with the emitter electrode of the first transistor (Q1) and also with the circuit output (12). The junction of the emitter electrodes of the second (Q2) and third (Q3) transistors are coupled with the other side (14) of the source of supplied potential via a current sink (R2). <IMAGE>
Patent GB-2115274-A (GB)
Title: Paint stripping apparatus
Inventor: BRAMBLE KEVIN
IPC: B05B16/00
Filed: 1982-12-20
Abstract: Paint stripping apparatus comprises a container (1), a support (5) adapted to support an article e.g. household door, or skirting board within the container and further adapted to be moveable to a location outside the container through a door (4) in the wall thereof, and means for causing a flow of aqueous alkali onto said article. <IMAGE>
Patent GB-2113234-A (GB)
Title: Method of marking a trafficway surface
Inventor: SMITH NORMAN
IPC: C08G18/66
Filed: 1983-01-14
Abstract: A trafficway surface (e.g. road, taxiway) is marked by applying a polyurethane thereto. The polyurethane may be produced by impingement mixing of two or more polyurethane forming components. One component may be MDI or MDI modified with a glycol or amine and the other component may be a polyol or an alkoxylated polyol. A hydroxy or amine cross-linking agent may be incorporated in one of the components as may a catalyst.