baber/WOPTO huggingface dataset:
Patent GB-2007471-A (GB)
Title: Video circuit with screen burn-in protection
IPC: H04N5/68
Filed: 1978-10-10
Abstract: To prevent display screen burn if a picture having, for example, bright lines e.g. in a T.V. game, remains stationary for a long period of time, a video circuit is examined to detect for how long the information has not been changed. A timer 8, reset whenever a change in any of one or more luminance circuits 3 is detected by detector 5, progresses towards completion of its run. If the run reaches completion a signal 9 causes, via circuit 11, the display 11 brightness to be reduced, e.g. to zero, possibly by switching off the supply to part of or all the apparatus. A restart circuit may be provided. <IMAGE>
Patent GB-2039245-A (GB)
Title: Method of manufacturing spectacle frame components and frames produced thereby
IPC: B29D12/02
Filed: 1979-01-11
Abstract: A block (2) is produced, preferably by extrusion, and preferably having a constant cross-section corresponding in shape to the profile of frame components for carrying the spectacle lenses e.g. in safety spectacles. The block is severed generally parallel to the faces of the components, at positions spaced along its length by distances preferably corresponding to the thicknesses of the components, to form the components. Lens retaining recesses (12) may be machined in the block (2), prior to the severing. The severed component may be heated and deformed at location (10) to a required nose bridge shape.   <IMAGE>
Patent GB-2013295-A (GB)
Title: Improvements in dual circuit control valve assemblies for hydraulic braking systems
IPC: B62D11/08
Filed: 1979-01-15
Abstract: In a control valve assembly separate brake-applying valves 10, 11 in a common housing 8 are operable independently for steering or simultaneously for braking by independently operable pedals. Both pedals are interconnected by a lever mechanism 1 which operates a valve- operating mechanism 5 for pressurising a distributor chamber 9 from which fluid is supplied to outlets 12, 13 controlled by the valves 10, 11 when one or both pedals are operated. A beam 26 movable about a fulcrum 27 on the housing 8 is operative to close one of the valve 10, 11 when the pedal corresponding to that valve 10, 11 is moved on its own in a brake- applying direction. When, for example, the end 2 is moved leftwards the beam 1 pivots about a pin 4 displacing the upper plunger 19 and valve element 18 rightwards and hence pivotting the beam 26 about the fulcrum 27 to close the valve 10. Further movement of the end 2 pivots the lever 1 about the valve 11 moving the mechanism 5 leftwards to pressurise the chamber 9 and hence the brake connected to the open valve 11. In alternatives the beam 26 is a circular plate, is disposed externally of the housing 8 and has two alternative pivots between the axes of the valves 10 and 11. <IMAGE>
Patent GB-2042123-A (GB)
Title: Locking reduction gearing
IPC: F16H57/00
Filed: 1979-02-13
Abstract: A power transmission device has an input shaft to be driven by a fluid coupling (not shown), an output shaft, and first and second intermediate shafts. Locking means (19) comprising a U-shaped member (20) is releasably mounted on the housing (15) of the device to engage with the splined end (16) of one of the intermediate shafts, or with the input shaft (not shown). The locking means (19) is used to lock the transmission and thereby to lock the output of the fluid coupling when it is desired to carry out a stall test on the fluid coupling to determine whether there is a satisfactory volume of operating fluid in the fluid coupling. <IMAGE>
Patent GB-2015936-A (GB)
Title: Improvements relating to toroidal safety insert for a pneumatic tire
IPC: B60C17/06
Filed: 1979-02-15
Abstract: A toroidal safety insert for an inflated, tubeless, pneumatic tire comprises a torus-like core 34, tire cord 36 radially wound around the torus-like core, and at least one load bearing member 38, 40 having tire cord 42 therein, said member being circumferentially wound around substantially the middle one third of the radially outer surface of the radially wound tire cord. The insert, when situated within the deflated tire, has its thick, oval, central portion 28 supporting the tread portion of the deflated tire and each of its thin end portions 30, 32 lying between and supporting the folded portions of a respective, collapsed sidewall of the deflated tire. The core is preferably of an open or closed cell foam, and the tire cords 36, and 42 may be of the same or different materials. <IMAGE>
Patent GB-2162621-A (GB)
Title: Screening projectiles
Inventor: SCHIESSL ALOIS
IPC: F42B12/48
Filed: 1979-03-14
Abstract: A projectile is described which consists of a contact head 1 and a screen material canister 3 which is made of aluminium, attached thereto by bolts 45 and, optionally closed with a cover 5. Contact rings 9 are arranged on an outer casing of the contact head and are connected via firing leads to a primer capsule 17 which is located in the contact head in a centrally disposed box-shaped charge chamber 13 having a substantially gas-tight screw cover 47 at its base and substantially gas-tight ports for the firing leads, the ports being sealed with a sealing agent. A delayed action fuse assembly 107 is arranged in the head section of the contact head or in the base of the screen material canister and connects the charge chamber and the canister, the assembly being in communication with the canister either through an igniter-destructor unit 75 having a charge 35 for igniting the screen material 83, 127, 125 and fragmenting a casing of the canister, or through an expelling charge chamber (37) Figure 5 (not shown) containing an expelling charge (39) for expulsion of the screen material at rupture of the cover on the head of the canister. The screw cover 47 is formed at its edge with a screw thread 49 and may be formed at least in its central region with an abutment 51 for a spacer of a cup discharger, the parts of the cover between the edge and the abutment being formed with weakened areas 57 for the escape of propellant gases. The screen material may consist of thin smoke-producing combustible lamellae 83, which may comprise a carrier material carrying a slow-burning combustion layer, and optionally smoke-producing pellets 125 embedded in smoke-producing granulate 127, or packages of chaff (73) Figure 6 (not shown). <IMAGE>
Patent GB-2020315-A (GB)
Title: Apparatus for vacuum treatment of metal melts
IPC: C22B9/04
Filed: 1979-05-04
Abstract: The apparatus comprises a vacuum- tight ladle 10 supported on and movable by a carriage 12 and sealed by a vacuum-tight cover 14. Housings 18 which are movable in vacuum-tight passages 16 provided in the cover, each comprise a watercooled open tube, a gripper body against which an electrode 22 is held by a clamp 24 and a reserve electrode compartment 20. In operation an electrical power supply is connected to each gripper body and horizontal arms 26 which receive respective vacuum-tight housings 18, are movable vertically. In order to change over the apparatus from use for degassing with reheating to use for decarburization under vacuum, the compartment 20 is removed by disconnection of the quick-acting attachment and an oxygen lance is instead fitted to the ring 36 and extends through the ring 36 and extends through the housing. <IMAGE>
Patent GB-2049509-A (GB)
Title: Producing a solid-section ingot by electroslag remelting
IPC: B22D23/10
Filed: 1979-05-21
Abstract: Crystallization of the ingot 7 is improved in the course of the melting operation by bringing a cooled body 8 into contact with the molten metal constituting the metal bath 6 and the contact is maintained till the melting operation is complete by moving the cooled body 8 at a speed approximating to the melting rate. The cooled body may be made in the form of a float or of an extension widened at the bottom and fixedly attached to a movable mould. <IMAGE>
Patent GB-2023641-A (GB)
Title: Improved Filtration of Wax in a Solvent Dewaxing Process
IPC: B01D33/00
Filed: 1979-06-12
Abstract: In the separation of wax crystals from dewaxed oil and solvent using a rotary drum vacuum filter having a filter cloth around its periphery embedded wax and/or resin is removed from the filter cloth on the drum by backwashing the filter cloth with cold solvent at not more than 30 DEG F above the filtration temperature introduced at 12-100 psig from within the drum over an area defined by an arc of the filter drum of 12 DEG - 72 DEG . Cake on the primary filter 3 is treated with an inward flow of inert gas over segment 14, washed with a spray 16 of cold solvent, treated with a second inward flow of inert gas over segment 20 and then backwashed with cold solvent or repulp filtrate 22 over segment 23. A backwashing process can also be applied to the repulp filter 26. <IMAGE>
Patent GB-2059837-A (GB)
Title: Forming a lump on the end of a pipe
IPC: B21J5/08
Filed: 1979-07-12
Abstract: Firstly a metallic pipe 1 is tapered so that it is substantially closed at one end 1a and its cross- section is reduced. Then it is pressed hard against a mould electrode 6, and a large electric current is passed through it to the mould electrode, so that the pipe end softens but does not melt. The pressing causes a lump 1e to be formed having no trace of the pipe bore within the lump. The mold electrode may be formed with a notch, and/or a depression, and may be inclined at an oblique angle to the axis of the pipe. It may be moved sideways or at an oblique angle to the axis of the pipe as the current is passed and the lump formed. <IMAGE>
Patent GB-2026484-A (GB)
Title: Preparation of phenolic ethers
IPC: C07C67/00
Filed: 1979-07-19
Abstract: Phenolic ethers are prepared starting from phenol or a phenolic derivative and an alkyl carbonate which are reacted at a comparatively low temperature (below 160 DEG  C.) and with good yield and selectivity by using a catalytic system composed by a base, preferably a tertiary amine, and by an iodide, either organic or inorganic.
Patent GB-2027279-A (GB)
Title: A network of resistors
IPC: H01C10/06
Filed: 1979-07-23
Abstract: A network of resistors comprises an insulative substrate 12' on which are deposited a plurality of conductive links 15, 16 etc each comprising two arms connected by an integral cross-member. A plurality of separate sections 24 to 33 of resistive material are formed by a thick film technique on the substrate. Adjacent sections overly the arms of the link linking them. Electrical current applied to the network is forced to follow a path which passes alternately through conductive link, resistive section conductive link and so on. Thus the path is of the same form whether traversing a single section or the entire chain. <IMAGE>
Patent GB-2058537-A (GB)
Title: Insect trap
IPC: A01M1/14
Filed: 1979-07-27
Abstract: An insect trap is made up of two sheets hinged together, at least one side of one of the sheets having an insect adhesive coating and the hinging being such that the coated sides may be laid adjacent to each other. <IMAGE>
Patent GB-2036252-A (GB)
Title: Controlled deflection rolls
IPC: D21G1/02
Filed: 1979-11-08
Abstract: A controlled deflection roll has a stationary beam (1) and, rotatable therearound, a shell (2) guided on the beam (1) for radial displacement by pressing pistons (10). The roll has a valve (23) which is caused to open if a given displacement (H) of the shell (2) becomes exceeded, thereby allowing pressure fluid to escape from the pressure line (14, 31), and thus preventing the development of an excessive pressing force which might destroy the shell (2). A residual pressure controller (36, 37, 38) associated with a valve (35) or a restrictor (35') can be provided in a relief line (34) branching off the pressure line so as to prevent the pressure in the pressure line from dropping below a desired value. A poppet valve (40, 41) may replace the valve (23). <IMAGE>
Patent GB-2039763-A (GB)
Title: Aeration device for fibrous suspension
IPC: B01F7/16
Filed: 1979-11-30
Abstract: An aeration device for a flotation container (1) - e.g. for removing printing ink from waste paper suspension - has a centrifugal impeller (2) into the centre of which are fed the suspension and air. The impeller (1) is surrounded by stationary guide vane means (9) which form, in radial relationship to the impeller, an inner ring of guide vanes (10) inclined, in the direction of rotation of the impeller, away from the radial toward the tangential direction, and an outer ring of baffle vanes (11) inclined relative to the guide vanes (10) in a direction opposite to the rotation direction. A radially outer ring of baffle rods (12) may also be provided. <IMAGE>
Patent GB-2041378-A (GB)
Title: Oligo-element caseinates
IPC: A23J1/20
Filed: 1980-02-04
Abstract: Caseinates of oligo-elements, such as chromium, cobalt, copper, tin, iron, magnesium, manganese, molybdenum, nickel, silicon, vanadium and zinc, contain for n times 100 grams of casein, from 3 to 100 million- grams of M<n+>, where M represents the oligo-element(s) and n is an integer. The caseinates are prepared from casein by ion exchange in order to introduce the oligo-element(s) therein, followed by washing until a substantially constant composition is obtained. They may also be obtained from alkali metal caseinates. The caseinates of copper or iron may be used as a source of copper or iron with no catalytic activity on oxidation, particularly in infant and dietetic products.
Patent GB-2056222-A (GB)
Title: Radio transmission and receiving system for use in a seismic gathering system
IPC: G01V1/22
Filed: 1980-06-12
Abstract: A seismic gathering system including a plurality of field units (25) for detecting seismic energy and for transmitting information by way of radio transmission to a recording station (51). The recording station (51) preferably includes a command transmitter (71) for transmitting a radio frequency command signal to the field units (25) and a plurality of receivers (57) for receiving information transmitted from the field units (25). The recording station (51) can be located in an aircraft; however, it may be land based, vehicular mounted or ship mounted. Each field unit (25) includes a receiver for receiving the command signal and a radio transmitter for transmitting to the recording station data representative of detected seismic energy. In addition, power-preserving circuits are provided in each field unit which respond to the command signal received for enabling the field transmitter for transmission for only a preset period of time.
Patent GB-2070409-A (GB)
Title: Filament, comprising smoke- modifying agent, in smoking article
IPC: A24C5/18
Filed: 1981-01-14
Abstract: A smoking article comprising a rod of smoking material includes at least one filament which is of accurately formed, preferably constant, cross section and extends over at least a major portion of the length of the rod, which filament comprises a smoke-modifying agent. The filament may carry or itself consist of one or more smoke-modifying agents. The material of the filament may be such that it is consumed in the combustion process or becomes frangible under the action of the heat of combustion of the smoking material. In a method of producing such a smoking-material rod, smoking material, a filament of accurately formed cross section and comprising a smoke-modifying agent, and a wrapper web are fed continuously to the rod-forming device of a rod- making machine so that a wrapped rod incorporating the filament is formed. The smoke-modifying agent may be applied to the filament before it enters the rod-forming device by passing it over part, immersed in a quantity of the said agent, of a rotating member. The quantity applied may be constant or increased at regular intervals along the fllament. <IMAGE>
Patent GB-2075683-A (GB)
Title: Method and apparatus for facilitating central venous pressure measurements
IPC: A61B5/0215
Filed: 1981-03-27
Abstract: A height indicating device for use with a central venous pressure manometer comprises a liquid filled U-tube 8 one end of which is attached to a patient 1, and the other to a scale 10. A pointer 9 is set to indicate a datum corresponding to the initial height of the part of the patient to which the end is attached. Any change in height is then read on the scale and used to correct manometer readings. <IMAGE>
Patent GB-2076346-A (GB)
Title: Parachute deploying means
IPC: B64D17/64
Filed: 1981-05-14
Abstract: Apparatus for drawing from a housing 5 an extractor parachute (not shown) for a main canopy intended for salvaging or braking a hang glider comprises a projectile 16 propelled by resilient means 10 such as bungee. The projectile remains attached to the resilient means while being propelled, the other end of the resilient means being attached to a closure 9 for housing 5, the extractor parachute being connected to an inner side of closure 9. The grip 1 for retaining and releasing the projectile 16 can be remotely controlled by the pilot via a cable mechanism. The main canopy pack can be mounted on the glider or the pilot, remote from the apparatus. <IMAGE>
Patent GB-2079126-A (GB)
Title: Agricultural machine attachable to the front three-point hitch of a tractor
IPC: A01B59/048
Filed: 1981-06-15
Abstract: A rotary mower 1 or other attachment, having a main frame 8, is provided with a supporting frame 2 which is pivotably connectable to the usual front three-point hitch of a tractor 5 through upper 4 and lower 3 link connections and resilient means (spring 18) for transmitting some of its weight to the tractor. Frame 2 is pivotably connected to the top 7 of frame 8 (at 13) through a tie member 6 which is pivotably attached (at 12) to frame 2 in the region of the upper link connection 4 and which is variable in length to a limited extent between abutments (ends 15, 16 of slot 11). Frame 2 is guided (by pins 14) in the region of the lower link connections 3 to be upwardly movable in slots 10 on frame 8 which extend obliquely upwards sloping from front to rear. A shock absorber 22 may be provided such that the length variation of tie member 6 is braked in one direction, namely that in which the spacing between the pivotal connections 12, 13 increases in size. <IMAGE>
Patent GB-2080036-A (GB)
Title: Gas-blast Circuit Breaker
IPC: H01H33/22
Filed: 1981-07-10
Abstract: An electric circuit interrupter incorporating a pair of separable contacts (12) which are totally enclosed within a gas filled chamber (3), incorporates means for discharging into said chamber during contact separation, a mixture of sulphur hexafluoride and one or more additional gases from a reservoir (2) in which said mixture is retained under a higher pressure than that in said chamber, to extinguish an arc which may extend between said contacts after the latter have separated. Use of a mixture of sulphur hexafluoride and one or more additional gases permits high pressures to be used without causing liquifaction of the sulphur hexafluoride. <IMAGE>
Patent GB-2103698-A (GB)
Title: Pipe repair clamp
Inventor: STOTT LEONARD
IPC: F16L55/172
Filed: 1981-07-17
Abstract: A pipe repair clamp which does not require extensive welding of the parts and which will not "unwind" on tightening includes a flexible metal strap (10) shaped in the form of a cylinder. The ends (12, 14) of the strap are reversed and welded to thrust plates (16, 18). Slots (20, 24) in the reversed ends of the strap allow logs (22) and studs (26) for tightening the strap to be welded directly to the thrust plates. <IMAGE>
Patent GB-2079649-A (GB)
Title: Workpiece transfer mechanism
IPC: B23Q7/03
Filed: 1981-07-17
Abstract: Workpiece transfer mechanism primarily for a centreless grinding machine is provided in which a transfer member (10) carrying a gripping head (15) is operable for back and forth axial movement along a path aligned with the working station of the machine and with the axis of a workpiece (7) on a support such as a conveyor (6) at a loading location. Operation of the transfer member (10) is controlled and effected by means such as a ram (14) and gear and opposed rack mechanism (12, 10A and 11) where by a workpiece to be machined can be gripped and transferred from the conveyor (6) to the working station and released thereat and, after machining, gripped again and returned to the conveyor (6). The gripping head (15) may consist of jaws (24) operated by gear and rack mechanism (21, 22, 23) in turn driven by a shaft (16) carried by the transfer member (10). The conveyor (6) is operated for unidirectional indexing movement such as by a ram (29), with provision (39, 45, 46A) for compensating adjustment. <IMAGE>
Patent GB-2088481-A (GB)
Title: Balancing mechanism in a four cylinder internal combustion engine
IPC: F02B77/00
Filed: 1981-10-16
Abstract: The balancing mechanism can balance out the primary and secondary inertia forces and inertia moments. The engine crankshaft 10 is formed so that the second, third and fourth pistons 22b, 22c and 22d are advanced in phase with respect to the first piston 22a respectively by 90 DEG , 270 DEG  and 180 DEG . A balancing shaft 11 is arranged in parallel with the crankshaft and rotated in a direction opposite to and at the same speed as the crankshaft. A pair of balancing weights 31, 32 are provided one for the first and second cylinders and the other for the third and fourth cylinders. <IMAGE>
Patent GB-2088090-A (GB)
Title: An arrangement and a method for directing a jet of fluid
IPC: G05B19/421
Filed: 1981-10-30
Abstract: An arrangement for directing a jet of fluid includes a nozzle mounted for pivoting in two mutually perpendicular planes, a first hydraulic actuating ram for effecting movement of the nozzle in one plane, a second hydraulic actuating ram for effecting movement of the nozzle in the other plane and means for controlling automatically the rams. These means include a control unit including a microprocessor, in which unit can be stored a representation of a movement pattern for the nozzle which can be read out for controlling automatically the rams.
Patent GB-2111375-A (GB)
Title: Apparatus for unloading silage from a bunker silo
Inventor: REES DAVID VICTOR HERBERT
IPC: A01F25/20
Filed: 1981-11-05
Abstract: A cutter 21 is mounted on a gantry-supported carriage 17 which can be moved along the gantry 10 to cut a "slice" of silage from an exposed vertical face of a stack of silage in a bunker silo 15. Silage from the cutter 21 is conveyed upwardly by an elevator 23 for discharge to a transport belt 30 moving along the top of the gantry structure to deliver silage over one or other side wall of the silo. A hopper 35, 36 at either end of the gantry enables concentrates to be added prior to discharge from the belt 30. Optionally a consolidating vibratory device (not shown) and a grass-spreading mechanism (not shown) can be fitted to the gantry for use during loading of the silo. <IMAGE>
Patent GB-2113889-A (GB)
Title: Tape recorder and telephone answering apparatus
Inventor: CHEE TSENG
IPC: H04M1/65
Filed: 1982-01-14
Abstract: A telephone answering system, which may also be employed as a tape recorder, includes a tape having two tracks. A playback/record head 22 is aligned for co-operation with one of the tracks and a control head 24 is aligned for co-operation with the other track. The circuit is connected to selectively intercouple the record- playback head 22 and telephone lines 57 in response to signals received by the control head 24. The control circuitry may include a flip-flop 47 responsive to the output of the control head, and interconnected by way of transistor gates for selectively directing the transfer of signals between the telephone line 57 and playback/record head 22. <IMAGE>