baber/WOPTO huggingface dataset:
Patent GB-2035297-A (GB)
Title: A method of producing carboxylic acids by catalytic oxidation of aromatic hydrocarbons
IPC: C07C51/265
Filed: 1979-08-24
Abstract: A method of producing carboxylic acids by catalytic oxidation of aromatic hydrocarbons, in which the oxidation reaction is brought about by a flow of gas having a predetermined oxygen content and is catalyzed by a catalytic complex obtained from low molecular weight aldehydes and/or ketones and salts of transition metals, the oxidation reaction occurring in a solvent medium comprising a low-boiling monocarboxylic acid and dissolving both the catalytic complex and the starting aromatic hydrocarbons, characterised in that the stream of exhausted gas containing oxygen and coming out of the reactor is processed so as to condense the vapours which it conveys outside the autoclave, the condensate is eliminated on the oxidation cycle and the mother liquor containing the oxidation products is recycled unchanged, after recovery of the aforementioned products, to the reactor.
Patent GB-2031687-A (GB)
Title: Television standards conversion
IPC: H04N7/01
Filed: 1979-09-11
Abstract: A video standards converter in which digital persistence is effected by including first and second picture stores (22). First and second coefficient blocks (300, 302) are connected to the first and second stores respectively and the outputs of the blocks added in an adder (301). Coefficients are selected for use in each block to determine the portion of information passed on to the adder. These coefficients may be varied cyclically and/or in dependence on any picture movement to provide variation in the degree of persistence applied. <IMAGE>
Patent GB-2033661-A (GB)
Title: Thyristors
IPC: H01L29/08
Filed: 1979-10-22
Abstract: A rapid switching thyristor in which the charge carrier lifetime is set by recombination centres so as to be low to reduce the circuit commutated turn-off time comprises an emitter region (11) penetrated by shorted channels (113) extending from the control base region (13), the charge carrier lifetime being arranged to be homogeneous and low in accordance with a desired ignition resistance in the event of a rise in the voltage under the emitter region which recurs forwardly biased across the thyristor element each time the thyristor turns off, and the charge carrier lifetime being set to be still lower in at least one sharply delimited small area (b) arranged along the edge (111) of the emitter region (11) or forming a part thereof facing the control electrode (G) and intersected by this edge. Where an auxiliary ignition emitter is provided between the main emitter and the control electrode, the auxiliary emitter has a higher density of shorted channels at its edge facing the control electrode and the small low lifetime areas are formed at the edge of the main emitter area facing the auxiliary emitter. <IMAGE>
Patent GB-2039596-A (GB)
Title: Vehicle curtain wall tensioning apparatus
IPC: B60J7/06
Filed: 1979-11-08
Abstract: In a vehicle curtain wall tensioning apparatus for closing the open side of lorries, a hinge bar 7 is pivotally mounted on a corner pillar 9 of the vehicle and is adapted to receive and lock an end portion 5 of a plastics curtain wall 1, and a lever mechanism is connected with the hinge bar, through a cable 14, the arrangement being such that in use actuation of the lever mechanism causes the hinge bar 7 to pivot on the pillar 9 to tension a curtain wall locked on the hinge bar. <IMAGE>
Patent GB-2039402-A (GB)
Title: Two-way AC power line communications system
IPC: H04B3/54
Filed: 1980-01-04
Abstract: A central processing unit polls a plurality of room control units (in e.g. each room of a hotel) by periodically transmitting, over the neutral and ground lines of the A.C. power distribution network, an interrogation signal having an address portion and a data portion. The room control unit addressed sends data to the central processing unit. A sequence of successive, identical addresses is used to allow the room control unit to accept data from the central processing unit, which also performs check comparisons on data it receives. <IMAGE>
Patent GB-2045877-A (GB)
Title: Improvements in and relating to actuators especially for brakes
IPC: F16D65/14
Filed: 1980-02-14
Abstract: In a sliding caliper disc brake actuator, an actuating shaft 39 is rotatable to rotate a helical cam element 23 that in turn axially displaces a non- rotating cam element 22. The elements 22 and 23 are located in a bore 21 in a caliper leg 16 with an automatic adjusting mechanism 18. A helical return spring 58 acts via a washer 59 to bias the cam elements together and a push rod 53 of mechanism 18 is held against rotation by washer 59. A nut 48 of mechanism 18 is threaded onto the rod 53 and engaged by the cam element 22 to transmit axial force to the push rod 53 and relative extension of the push rod from the elements 22, 23 is accomplished by a one-way spring brake 72 acting on the nut 48 and a disc clutch drive 63 to 69 between the cam element 23 and the nut 48. Lost motion is provided at the clutch drive or the spring brake to prevent rotation of the nut 48 on the rod 53 during normal clearance, and rotation of the nut on the push-rod occurs when excessive clearance occurs. <IMAGE>
Patent GB-2073578-A (GB)
Title: Vehicle seat belt retractor
IPC: B60R22/40
Filed: 1980-04-15
Abstract: A vehicle seat belt retractor has a spindle journalled in a frame (10) in plastics bushes (20, 21) of which one (21) is received in a bush portion of an internally toothed lock cup (25) rotatable to drive a pawl (62) to engage a ratchet wheel (31) fixed to the shaft which drives a flywheel (35) through a linkage (40, 45) operable to engage against the lock-cup on belt withdrawal at a predetermined speed. A retractor-sensitive inertia weight (72) can retard the flywheel through a wheel (80) so that the retractor can be mounted at any angular orientation about the shaft axis. The spindle comprises semi-circular sectioned spool parts (107, 108) making a snap-fit connection to a shaft (14). <IMAGE>
Patent GB-2075631-A (GB)
Title: Master cylinders and their manufacture
IPC: B60T11/20
Filed: 1980-04-21
Abstract: In the manufacture of a master cylinder having a body (1) with a bore (2) and first and second pistons (7, 8) slidable in the bore and interconnected by a bolt (16) and sleeve (17), a predetermined spacing between seals (9) carried by the pistons (7, 8) is ensured by assembling the first piston (7), spring (15), bolt (16) sleeve (17) and a member (14) telescoped over the end of the bolt, adjusting the bolt axially relative to the member (14) and then crimping the latter to engage grooves (19) in the bolt to fix the adjusted position. <IMAGE>
Patent GB-2054044-A (GB)
Title: Rotary positive-displacement fluid-machines
IPC: F01C1/02
Filed: 1980-04-22
Abstract: A thrust-bearing/coupling 50 for a scroll-type machine, which may be a compressor, an expander, a fluid pump or a vacuum pump, comprises a ring of bearing balls 51 within mutually facing circular indentations 52, 53 in the orbiting scroll-member end-plate 16 and a fixed member 30. The balls may be retained by a perforated ring 56. There may be a plurality of rings of bearing balls disposed in tandem, Figs. 12 and 13 (not shown), and/or a set of indentations for the balls may be formed in a ring of bearing pads, Figs. 14-23 (not shown). <IMAGE>
Patent GB-2050376-A (GB)
Title: Production of glycols
IPC: C07C29/50
Filed: 1980-05-12
Abstract: Polyols are produced by contacting olefins or hydroxyolefins with oxygen and an aqueous solution which comprises copper and/or iron ions, bromide and/or iodide ions and a substantial amount of dissolved carbon dioxide.
Patent GB-2054229-A (GB)
Title: Vehicle control system
IPC: B60T7/18
Filed: 1980-06-09
Abstract: A brake-control-apparatus for a transit vehicle determines a safe brake velocity for the vehicle in relation to actual vehicle deceleration and an input command speed signal for the vehicle from the roadway. The actual speed of the vehicle is compared with the determined safe brake velocity for the control of the vehicle speed. <IMAGE>
Patent GB-2056944-A (GB)
Title: Mobile telescopic jib cranes
IPC: B66C23/82
Filed: 1980-08-12
Abstract: A mobile crane has the advantages of both a telescopic cantilever jib and of a lattice strut or lightweight jib. This is achieved in use by pivoting on a pin 8 the foot 40 of the base section 12 of the telescopic jib in a forward position on front portion of turntable 4. For transport the pin 8 is removed and the jib foot 40, pivoted on swing link 42, is moved to a rearward position by retracting ram 44 to swing the swing link 42 about its pivot 36 to a rearward direction to stow the jib. The jib may be luffed in use by a ram 38 used to pivot mast 34 about pivot 36, tie ropes 28 of fixed length connecting the mast 34 and the jib. <IMAGE>
Patent GB-2059886-A (GB)
Title: Vehicle wheel hub and axle assembly
IPC: B60B27/02
Filed: 1980-09-19
Abstract: A bearing spacer for a wheel assembly which has a hub rotatable about a spindle. The hub has a bearing stop shoulder projecting radially inwardly from an inner circumferential surface of the hub. A bearing is mounted on an outer circumferential surface of the spindle and the bearing spacer is mounted intermediate the stop shoulder and the bearing. The bearing spacer is comprised of an annular member having axially extending inner and outer cylindrical surfaces and radially extending end surfaces. One of the end surfaces extends radially outward from the inner cylindrical surface a radial distance less than the radial extent of the stop shoulder. This end surface is joined to the upper cylindrical surface of the bearing spacer by a surface spaced from the stop shoulder and the inner circumferential surface of the hub. Consequently, the bearing spacer transmits thrust forces from the bearing to the bearing stop shoulder while allowing a large radius on the bearing stop shoulder to reduce undesirable stress concentrations therein.
Patent GB-2064055-A (GB)
Title: Tube joint
IPC: F16B7/04
Filed: 1980-10-23
Abstract: Aligned tubes 1, 1a are joined by a tubular spigot 2 which can be expanded by means of a wedge 5 driven into a longitudinal slot in the spigot. The spigot carries a central ring 3 having ribs 9 for supporting cross-members 10. The wedge is operated by a bolt 5. <IMAGE>
Patent GB-2061735-A (GB)
Title: Breath actuated device for administration of powdered medicaments by inhalation
IPC: A61M15/00
Filed: 1980-10-30
Abstract: A breath actuated device for the oral inhalation of medicaments in finely divided powder form, comprising a chamber (72) having one or more inlet ports for the entry of air and an outlet in direct communication with a mouthpiece (66) and positioned within the chamber, means for separating the lid and base components (62A, 62B) of a capsule (as defined herein) containing the medicament whilst holding tie capsule substantially vertically to expose an aperture in the base component facilitating access to the powdered medicament and means for supporting the base component of the capsule containing the powdered medicament in a substantially vertical position, the inlet ports, outlet port and means for supporting the base component of the capsule being arranged such that when the device is operated by suction at the mouthpiece an airflow is established from the entry ports to the outlet port directly across the aperture in the base component of the capsule causing the particles of powdered medicament in the base component of the capsule to become entrained in the air flow. <IMAGE>
Patent GB-2064973-A (GB)
Title: Filter press
IPC: B30B7/02
Filed: 1980-11-24
Abstract: A filter press for separating wort from mash comprises an endless filter band 22 extending in zigzag manner through a vertical stack of alternate plates 14 and frames 21, which are clamped together during filtering and subsequently separated to enable the band to be moved to discharge filter cake. Each plate comprises a horizontal dividing sheet 18 and upper and lower band-supporting sieves 16 and 17, so that when conduit 34 supplies mash slurry to frames 21, filtrate flows upwards and downwards through respective sections of band 22 into the lower and upper cavities of adjacent plates and thence to conduit 35. Subsequently valves 38 are closed, and conduit 36 delivers sparging water to lower cavities only, to flow through the mash cake in the frames below into the upper cavities of the next plates down and thence to conduit 35. In Figures 11, 12 (not shown) two stacks of plates and frames cooperate with a single filter band between common end plates 3 and 4. <IMAGE>
Patent GB-2093753-A (GB)
Title: Circle centre locator
IPC: G01B5/25
Filed: 1981-02-14
Abstract: A recess for the reception of a circular workpiece of known diameter is formed by two rollers which abut the periphery 28 of the workpiece. A third roller is slidably mounted along an axis which bisects the recess such that when the distance between one of the two rollers and the third roller is set to be equal to the radius of the third roller, plus the diameter of the one roller, plus the radius of the workpiece, the third roller is positioned at the centre of the workpiece. <IMAGE>
Patent GB-2080426-A (GB)
Title: Air valve carburettor
IPC: F02M7/22
Filed: 1981-06-30
Abstract: To modify the fuel flow from an annular orifice 19 controlled by a needle linked to the air flow measuring valve 3 in dependence upon at least one engine operating condition, e.g. engine temperature or altitude, the orifice is located in a throttle valve bypass passage 25 in which the pressure P2 is controlled by a valve 26. The difference between the pressure P2 and the substantially constant pressure P1 between the air and throttle valves 3 and 2 is set by a condition dependent force acting in addition to the pressure difference on the valve positioning diaphragm 16. A device 21, e.g. a stepping motor, may act on the diaphragm spring abutment 27 or a variable magnetic force may act on the diaphragm 16 in dependence on the engine operating condition. <IMAGE>
Patent GB-2082720-A (GB)
Title: Joining sheets
IPC: F16B5/06
Filed: 1981-07-22
Abstract: The method of forming a joint between two sheets of material 1, 2 comprises forming a substantially S- shaped section along one edge of a first sheet and locating one edge of the other sheet in one 4 of the two channel sections formed by the S- shaped edge of the first sheet. This method is particularly applicable to the construction of panel units which can be used themselves in the construction of doors, partitions, or walls of enclosures. <IMAGE>
Patent GB-2082562-A (GB)
Title: Coating germanium or silica with carbon
IPC: H01L31/0216
Filed: 1981-08-17
Abstract: An infrared transparent element (8) of germanium or silicon is coated with a layer of hard infrared transparent carbon. The carbon is deposited on the element, used as a cathode (7, 8) in a glow discharge chamber (1) by applying a D.C. voltage (12) to a hydrocarbon gas at a pressure of e.g. 10<-1> to 10<-2> Torr. Prior to depositing the carbon the element may be heated and cleaned using argon ion bombardment. Layers of germanium and silicon may also be deposited using the gases germane and silane respectively. <IMAGE>
Patent GB-2105234-A (GB)
Title: Work support including positionable work-tables
Inventor: BLACKBURN ALLAN MICHAEL
IPC: B25J9/00
Filed: 1981-09-08
Abstract: A work-table (1) is used in conjunction with an industrial robot (2) which has a working region (7). The table (2) comprises a frame (12) carrying, one at each end, two work-tables (13) and (14) which can be rotated normal to their working surfaces and which can be pivoted about a horizontal axis. Only one work-table can be within the region (7) at any one time. An actuator (20) is provided for rotating the frame (12) about a vertical axis so as to interchange the positions of the tables.
Patent GB-2103824-A (GB)
Title: Scanning mirror systems
Inventor: BLOUNT ERIC ALBERT
IPC: G02B26/10
Filed: 1981-09-14
Abstract: A scanning mirror system which has a wide angle field of view but is nevertheless compact comprises two mirrors (13, 14) for scanning the field of view of a scene across radiation detector(s) (24), wherein both mirrors scan in a common plane, and the first mirror (13) reflects radiation from the scene onto the second mirror (14), and swings back and forth about a first axis (15) normal to the common plane and spaced from the mirror (13) on its reflecting side, while the second mirror (14) reflects radiation from the first mirror (13) onto the detector(s) (24), and pivots in correspondence with the first mirror (13) about a second axis (16) lying parallel to and spaced from the first (15). <IMAGE>
Patent GB-2097349-A (GB)
Title: Mobile control means for an overhead monorail
IPC: B61B9/00
Filed: 1981-12-03
Abstract: To compensate for variations in the height above floor level of a monorail (1) and allow a driver to enter or leave a driver's cabin (5) of an overhead train (7), the driver's cabin (5) is connected to a supporting structure (4) which is suspended from the rail (1) by a trolley (2), by means of a telescopic arrangement (8) whereby the driver's cabin (5) can be raised or lowered relative to the structure (4). Remote control means (13, 14) for the telescopic arrangement (8) may be provided and the cabin (5) may carry a battery or pressure cylinder (11) to power the telescopic arrangement (8). <IMAGE>
Patent GB-2087218-A (GB)
Title: Elastic assembly for example bracelet or ring
IPC: A44C5/10
Filed: 1981-04-24
Abstract: PCT No. PCT/CH81/00045 Sec. 371 Date Dec. 14, 1981 Sec. 102(e) Date Dec. 14, 1981 PCT Filed Apr. 24, 1981 PCT Pub. No. WO81/02970 PCT Pub. Date Oct. 29, 1981.Extensible metal assembly, for example bracelet or ring, comprising link members (1) and connecting members (2). Each link member has at its center a cavity (3) which goes right through in the longitudinal direction of the bracelet. The side walls of said cavity have each two holes (4). The connecting member is formed by a flattened tubular envelope. In this envelope there is provided a spring (6) having four S-shaped arms. The ends of those arms form studs (5) which project by pairs on either side of the tube. The tube has a width slightly smaller than that of the cavity (3). The connecting member is arranged on the side of the cavity (3), in the same plan as the rigid element, and pushed into the cavity. Upon passing, two of the studs (5) slide against the edges (8), are retracted into the opening (7) of the tube, and expand into the holes (4), fixing the members together.
Patent GB-2094100-A (GB)
Title: Improved resolution transducers, systems and methods for the transmission and/or reception of waves propagated by vibration
IPC: G10K11/32
Filed: 1982-02-05
Abstract: Problems of resolution and focussing arise in the near field in systems employing radiation, including ultrasonic systems. These problems can be alleviated by suppressing the plane waves in the combination of plane waves and edge waves usually employed. Several ultrasonic transducers with this property are described and in one a piezoelectric disc 60 with surface electrodes 61' and 62 is non-linearly polarized to transmit edge waves without plane waves. <IMAGE>
Patent GB-2114746-A (GB)
Title: Gauging system and method
Inventor: BLOSE THOMAS L
IPC: G01B7/28
Filed: 1982-02-10
Abstract: A gauging system and method involves measuring by means of sensors 26,27,28 the radial, longitudinal and rotatable angular displacements of a gauging tip or probe 10, for processing, as via a computer, and readout. One or more base positions of the tip may be selectively established; and corrections for misalignment of the gauge relative to the work may be made via the computer. Slide means 13 is provided to obtain the radius measurements associated with say the bore of a tube at various locations, a slide 12 obtains the longitudinal measurements, and a rotor 18 mounted on a support 19 and carrying the slides 12, 13 obtains the angular measurements, all of which may be averaged via the computer. Also, the measurement signals may be transmitted only after predetermined pressure applications to the gauging tip. <IMAGE>
Patent GB-2095418-A (GB)
Title: Thermal stencil process
IPC: B41N1/24
Filed: 1982-02-23
Abstract: To produce a stencil from an original document without damage to the original the original is covered by an intermediate sheet, preferably a glassine paper, coated on its exposed surface with a heat-sensitive layer. The heat-sensitive layer is placed in contact with an ink-permeable layer coated onto a base sheet and by exposure to infrared the areas of the heat-sensitive layer over the original image are melted and thereby bonded to the ink- impermeable layer. The stencil is then formed by stripping the intermediate sheet from the stencil sheet, thereby removing the ink-permeable layer in the image areas. The ink-permeable layer, as described in 2,029,324A, preferably contains zinc oxide in a resin binder and is attached to a porous tissue base sheet by an adhesive layer. Preferred compositions of the heat- sensitive layer are described.
Patent GB-2118501-A (GB)
Title: Roof rack device
Inventor: RADEMAKER ROBBERT MARIA
IPC: B60R9/042
Filed: 1982-03-02
Abstract: A device to be fixed on a car roof for supporting a load such as a boat, in which the rack is securable on a car roof or gutter has at least two cross members 5, to one end of which is pivotally mounted, at 14, a framework 13 having transverse rails 15, the framework being pivotal to and from a position overlying the rack. Two spaced parallel extension rods 19 are telescopically mounted on, or detachably mountable on, the framework to form extensions of the rails, and a carriage 20 is movable along the extension rods and the rails from a position adjacent the ground when the framework is tilted to a position above the rack. The carriage is moved by a flexible strap 35 which can be wound on a winding mechanism 33, 34. <IMAGE>
Patent GB-2099471-A (GB)
Title: Pressure-sensitive recording material
IPC: B41M5/136
Filed: 1982-04-06
Abstract: Pressure-sensitive recording material comprises a paper sheet having a surface pH of at least 6.0 and having coated thereon microcapsules containing a solution of a benzhydrylsulfone color former preferably of general formula:   <IMAGE> where R1 is a monovalent aliphatic or aromatic group containing 5 to 25 C atoms and R2 is a C 1 to 5 alkyl group. Other color farmers can be included in the microcapsules, e.g. a triarylmethane. Preferred color developers are clays. The use of this color former gives good color formation without coloration of the surface of the paper or staining of cut paper edges.