baber/WOPTO huggingface dataset:
Patent GB-2063488-A (GB)
Title: Circuit Testing Apparatus
IPC: G01R15/00
Filed: 1979-11-13
Abstract: Apparatus for measuring a high voltage in an ignition circuit comprises voltage dividing means (10) having a first arm for connection to a point of measurement in said circuit and a second arm which is connected to a rectifying means (21), the output of said rectifying means (21) being connected to means for matching impedance (25) at said rectifying means (21) to a direct current voltage display means (35) connected to the output of said impedance-matching means (25) such that a displayed voltage is related to the high voltage is said ignition circuit. The voltage dividing means (10) may be a capacitive voltage divider, the first arm and the second arm each comprising a capacitive element (12, 14). <IMAGE>
Patent GB-2055801-A (GB)
Title: Preparation of hydroxy derivatives of 2-isopropylamino-pyrimidine
IPC: A61K31/505
Filed: 1980-04-15
Abstract: Compounds of the general formula   <IMAGE>  A4=H or OH  A5=H or OH  A6=H or OH  A4=A5=A6=H excluded  are prepared by reducing compounds of the general formula   <IMAGE> A'4=H, alkoxy or aralkyloxy  A'5=H, alkoxy or aralkyloxy  A'6=H, alkoxy or aralkyloxy  A'4=A'5=A'6=H excluded with hydrogen in the presence of a hydrogenation catalyst, e.g. palladium. The compounds I are of therapeutical interest.
Patent GB-2047794-A (GB)
Title: Power unit
IPC: B25D9/12
Filed: 1980-04-21
Abstract: Power unit for use as a drive mechanism e.g. for deforming a workpiece, comprising a working piston 3 movable in a cylinder (2), or a rotary piston, Fig. 5 (not shown), a working member (4), an energy store 14 which is connected constantly to a primary cylinder space 10 generating the drive power, while the secondary cylinder space 11 on the other side of the working piston contains a pressure medium which provides before the start of a working stroke a counterbalancing force on the working piston, and a control device for the expansion of the secondary cylinder space (11), comprising at least one auxiliary piston (27 to 30) which in use abruptly increases the volume of the secondary cylinder space and thereby effects a rapid expansion of the secondary cylinder space, the working piston (3) being couplable with the working member (4) in the working direction for the transmission of the drive energy and being uncouplable in the opposite direction. <IMAGE>
Patent GB-2062102-A (GB)
Title: Centrifugal Pump and Turbine
IPC: F01D1/00
Filed: 1980-08-08
Abstract: A two-stage, high-pressure centrifugal slurry pump comprises a pump housing 34, and inlets 12 outlets 30 which are located through the periphery of the pump. In each stage, pre-rotation vanes 16 are located along the interior wall of the pump housing and convey slurry from the inlet 12 to the impeller 20 while reducing the relative velocity at the impeller inlet and primarily at the impeller inlet tip 18. The face-to-face impellers 20 are located on the pump shaft 56 and transmit the slurry to vaneless radial diffusers 24 from which the slurry is conveyed into a fold-over volute 28. A replaceable cutwater is interposed between the diffuser and the volute to channel slurry into the volute and slurry seals 46 are coaxially located along the pump shaft between the impellers and end plates 38 to prevent leakage. Although the stages can be connected in parallel, or pump independently, an external connection 32 connects them in series. By reversing the flow, the pump discharge outlet 30 of each stage becomes a turbine intake, the fold- over volute 28 becomes a converging scroll, the radial vaneless diffuser 24 becomes the radial vaneless turbine inlet nozzle, the pre-rotation vanes 16 become flow straightening guide vanes and the pump inlet volute 14 becomes the turbine radial discharge scroll. <IMAGE>
Patent GB-2082150-A (GB)
Title: Improvements in insertion of documents to printing apparatus
IPC: B41J11/55
Filed: 1980-08-14
Abstract: Apparatus for the insertion of documents 3 to a printing terminal, comprising a guide funnel 1 for leading a document 3 towards the printing area, a photoelectric or similar sensor 5 for detecting the passage of the lower edge of said document, and pinch rolls 6,7 driven to define the line spacing of the printer is characterized by each pinch roll being associated with a respective pressure roller 11 and connected with a respective incremental motor 14, 15, each motor being independently excited from the programming system, and two sensor devices 23, 24 for the lower edge of the document, associated with said programmer 25 in such a way that the first which detects the lower edge of the document inhibits the operation of the motor of that side until the moment at which said edge is also detected by the second sensor. Thus the alignment of the document is ensured. <IMAGE>
Patent GB-2082760-A (GB)
Title: Improvements in and Relating to Fire Grates
IPC: F24B1/188
Filed: 1980-08-28
Abstract: An improved firegrate in which air is blown from a front bar (22) into hollow members (30) forming the grate, to a rear bar 28, and through side passages (32, 34) to exit (after being heated) through grills (36, 38) on both sides of the front of the grate. The air is supplied along a duct (14) from a fan in a box or like container (100. A switch controls the fan although the invention also envisages timer and thermostatic control for the fan. Instead of supplying warm air through the grills the latter may be blanked off and apertures (40, 42) found in the feet of the grate to communicate with undertow ducting for distributing warmed air to other parts of the room or house. An additional heat exchanger may be provided for preheating the incoming air or further heating the air before discharge. <IMAGE>
Patent GB-2085276-A (GB)
Title: Improvements relating to filters
IPC: A24D3/04
Filed: 1980-09-04
Abstract: The present specification discloses a filter for use in a cigarette, and an apparatus and process for use in the manufacture of such filters. Particularly the present invention relates to a filter made from a number of thermoplastic polymer fibres folded transversely to the longitudinal axis of the filter at random orientations about the axis, the fibres being compressed and heat set in this position. However, such filters can easily be damaged during handling causing some of the fibres to separate. This is clearly undesirable. The present invention provides an axial reinforcement (3, 17) in the outer surface region of the filter (1). The reinforcement (3, 17) strengthens the filter (1) and enables it to be handled without serious damage. The axial reinforcement can take the form of generally axially extending welds (3) adjacent fibres on the surface of the filter being welded together in strip regions, or alternatively the whole filter surface (17) can be effectively welded to encapsulate the filter. The desired form of axial reinforcement can be produced by passing the filter through an annular heating means (9, 5, 7) having radially inwardly directed fins (7, 13), to produce the axial welds, alternatively through a heated ceramic ring (19) to produce the total encapsulation. <IMAGE>
Patent GB-2059320-A (GB)
Title: Continuous manufacture of butt-welded pipes
IPC: H05B6/02
Filed: 1980-09-18
Abstract: A skelp (10) is continuously passed through a heater furnace (1) to be heated up to a predetermined temperature less than the butt-welding temperature and through induction heaters (2,3) adjacent the outlet end of the heating furnace for heating only the edge portions (El and (Er) of the skelp (10) discharged from the heating furnace (1) up to the butt-welding temperature. The induction heaters are such that the electromagnetic coupling between them and the corresponding edge portions (El and Er) of the skelp (10) can be varied to adjust the temperature to which the edge portions are heated. A bending device (4) adjacent the outlet end of the heaters (2,3) bends the skelp (10) into a generally tubular form, and butt-welding rolls (5) adjacent the outlet end of the bending apparatus (4) apply a predetermined pressure to the bent up skelp (10) for butt-welding the edges of the skelp (10). A cooling device (71) cools the seamed portion of the pipe to the temperature of the remainder of the pipe. <IMAGE>
Patent GB-2084442-A (GB)
Title: Crop pickup/mower
IPC: A01D34/52
Filed: 1980-09-19
Abstract: To mow grass, weeds and other growth or pick up crop or other strewn materials from ground or other level, a rotor is equipped with flail members 23 which flick crop into a carrier bin, a conveyor chute or the like. The flail members are of pliant sheet material each fixed by one longitudinal edge to a rotor shaft so as to be able to extend radially from the shaft, under centrifugal force, when the shaft is rapidly rotated; the back or trailing faces of the distal edge marginal portions of the blades are eccentrically weighted so that, upon rotation, the margins are centrifugally induced to incline angularly in the direction of blade rotation so to exercise a spooning or scooping action on the material to be mown and/or picked up. <IMAGE>
Patent GB-2083732-A (GB)
Title: Apparatus for the chemical treatment of crops
IPC: A01M21/04
Filed: 1980-11-10
Abstract: Apparatus for chemically treating crops comprises a hollow distribution roller 16 which serves as a reservoir for the chemical and an application roller 15 which causes a film of the liquid to be formed therearound for applying to growing plants and the like, as the roller assembly is moved forward, with the roller axes broadside.   The interior of the distribution roller 16 is divided up by baffles which do not completely cut off each baffle section from the next, so that the roller can be filled from one filler point but the baffles act as weirs and prevent the liquid from flowing all to one end or the other on inclined or undulating terrain. <IMAGE>
Patent GB-2066011-A (GB)
Title: Transistor drive circuit
IPC: H03K17/60
Filed: 1980-12-02
Abstract: This invention is a transistor drive circuit in which a transistor (15) can be used to control the current in a load (11) from a power supply (12) by means of a high frequency transformer (14) and a control circuit (13) whose transistor ON signal consists of a series of pulses of which the OFF time or space between pulses is shorter than the turn off time of the transistor. <IMAGE>
Patent GB-2083368-A (GB)
Title: Intellectual training toy
IPC: G09B1/08
Filed: 1980-12-03
Abstract: A number of marbles attracted by a magnet are placed on a base. A transparent cover is put over the marbles. A spacing is provided between the base and the cover so as to allow the marbles to be movable therebetween. When an operating stick comes close to the top surface of the cover, a magnet disposed at the lower end of the operating stick attracts a marble between the base and the cover. The thus attracted marble may be moved to the desired position by moving the operating stick along the top surface of the cover. When the operating stick is moved away from the cover, the marble is dropped on the base. In this manner, various figures may be depicted by a number of moved marbles. <IMAGE>
Patent GB-2067431-A (GB)
Title: Method of producing thin single- crystal sheets
IPC: C30B33/00
Filed: 1981-01-19
Abstract: A method of producing thin single-crystal sheets is disclosed. A thin single-crystal layer is formed on a substrate, with the material of the layer having a different absorption coefficient for laser radiation than does the material of the substrate at their interface. The laser radiation is focused into a region contiguous to the interface and extending the width of the interface, and is swept across the entire interface region. The energy that is absorbed from the laser radiation in the focus region liquifies material in this region. The layer is progressively separated from the substrate as the laser radiation is swept across the interface, until the entire layer is separated from the substrate. The method is applicable to the production of thin single-crystal sheets of semi-conductor material which may be used, for example, in the manufacture of solar cells or integrated circuits. <IMAGE>
Patent GB-2076591-A (GB)
Title: Flow Actuated Switching Devices
IPC: H01H36/00
Filed: 1981-01-26
Abstract: A fluid actuated switching system comprises a fluid actuated poppet (20) mounted in a fluid passageway (15) for movement from a first position in the absence of fluid flow to a second position in response to a predetermined fluid flow. An elongated permanent magnet (25) is mounted on the poppet for movement along the same axis. A second elongated magnet (34) is positioned exteriorly of the fluid passageway adjacent and substantially parallel to the first magnet (25). The two elongated magnets are polarized so that like poles are adjacent to one another and repel each other when the poppet is in the first position and attract one another when the poppet is in the second position thereby providing snap action movement for the magnet 34. The second magnet 34 actuates an electrical or pneumatic switching means (31). The poppet (20) moves along an axis which is perpendicular to the axes of the inlet (11) and outlet (12) ports of its housing (10). <IMAGE>
Patent GB-2071862-A (GB)
Title: Cine Camera
IPC: G03B17/02
Filed: 1981-02-11
Abstract: A cine camera has a housing 1 which is of generally circular shape as viewed from the side and which has a generally segment-shaped aperture 10, to one side of the objective lens axis, forming an arcuate handle 11. The camera has an objective lens 2 which is wider than the main part of housing 1, recessed viewfinder lens 6, viewing window 7, photoelectric cell 5 and socket 12 for a lamp. A projection 13 on the side of the housing opposite to that which receives the film cassette, has a removable lid 14 and accommodates batteries 15. Operating buttons 16 and 17, protected by salient 19, are situated above the projection. <IMAGE>
Patent GB-2094849-A (GB)
Title: Wall structure
IPC: E04H17/16
Filed: 1981-03-18
Abstract: A wall has spaced apart posts 1 interconnected by wall panels 2, the wall panels 2 having at each end at least two generally horizontal, vertically spaced, recesses 4 receiving respective ends 7 of elongate connectors 6 which extend through respective apertures 5 in adjacent posts. The connectors 6 have openings 8 spaced from their ends so that a respective elongate retainer 9 can be disposed therethrough alongside opposite sides of a post 1, to substantially prevent longitudinal axial movement of said connectors 6 out of the apertures 5. The joints between posts and panels may be grouted. <IMAGE>
Patent GB-2073969-A (GB)
Title: Circuit interrupter apparatus
IPC: H02H3/10
Filed: 1981-04-09
Abstract: In an overcurrent or earth-leakage protective system, the current sensor output is digitised and then analysed in a digital processor 154. <IMAGE>
Patent GB-2074791-A (GB)
Title: Mounting of circuit elements on substrates
IPC: H05K1/18
Filed: 1981-04-23
Abstract: An electrical component e.g. a chip capacitor 10 has formed thereon conductive epoxy layers 12 about the terminations 15, 17 of the component. The layers 12 are electrically insulated from each other and after curing are each fused to a conductive epoxy local coating formed by screening, painting, dispensing, etc. on a substrate. The bond between the fused jackets of epoxy on the terminations of the chip and the underlying epoxy local coatings disposed on the substrate is electrically conductive and sufficiently mechanically reliable and rigid to withstand impact and thermal shock exposures. Polyamide may be substituted for epoxy for components to operate at high temperatures. <IMAGE>
Patent GB-2098527-A (GB)
Title: Equestrian tool
IPC: B25F1/00
Filed: 1981-05-15
Abstract: A tool for facilitating the fixing of studs to threaded holes in horse's hoofs comprises a spanner part (1) and a tap (10), the tap being detachably located in a storage recess (9) in the spanner part. The spanner part (1) also serves as a tap wrench or handle which is fitted to the tap (10) when it is to be used for cleaning out the threads in the holes of a horse's hoofs and to this end is provided with a square hole (6) which fits over a square end (11) on the tap. Besides having spanner apertures, such as (2) and (3) the spanner part may include a pick end (5). <IMAGE>
Patent GB-2102849-A (GB)
Title: Improvements in driving belts
Inventor: BERCZI CHARLES NICHOLAS
IPC: F16G1/28
Filed: 1981-07-06
Abstract: In a timing or like synchronous drive belt composed of cords, rubber backing, rubber teeth, fabric jacket and rubber facing, improved characteristics are obtained by using a novel fabric for the jacket. This fabric consists of a base fabric warp-knitted from fine, extensible yarns A and having incorporated in it at least one coarse, inextensible inlaid warp yarns B, C and an extensible weft insertion D. <IMAGE>
Patent GB-2082102-A (GB)
Title: Milling tool
IPC: B23C5/10
Filed: 1981-08-06
Abstract: A tool for milling grooves of semi- circular cross section, more especially ball tracks of homokinetic joints, comprises a receiving shank 20, which is provided at the front end with a slot 24 which passes transversely therethrough and the flat walls of which are provided at an equal distance from the shank axis. A cutting bit 32, which has parallel and plane faces, is insertable into the slot and has a circumferential portion having an at least semicircular cutting edge 36,38 and a circumferential portion, contacting a surface forming the slot bottom. The bit is clamped in position between the slot walls by means of a clamping bolt 34. The cutting bit (32) consists of one piece and has cutting edges formed by edge portions (36,38) of its projecting circumferential edges. <IMAGE>
Patent GB-2083381-A (GB)
Title: Uniflow decanter centrifuge
IPC: B04B1/20
Filed: 1981-09-03
Abstract: A decanter centrifuge for separating a raw material into solids and two liquid phases of different densities has inlet apertures (11) for the raw material and outlet apertures (12) for solids. Each liquid phase is withdrawn intermediate the ends of the separating space (10) through a separate set of outlet tubes (13, 14) extending through a conical section (20) of the drum wall which section diverges towards the solids outlet end at a steeper angle than the preceding wall section (18), counted from the inlet end. The solids-conveyor screw (3, 4) has cut-outs in the region of the tubes (13, 14). The inwardly oriented openings of one set of tubes e.g. (13), are closer to the drum axis than the openings of the other set of tubes (14). Downstream of the tubes (13) a radial partition wall (15) is secured to the conveyor screw and the periphery of that wall is farther away from the drum axis than the outermost tube openings. The partition wall efficiently retains the lighter liquid phase on its upstream side and permits the heavier liquid phase to pass together with the solids so that each liquid phase is withdrawn with practically content of the other liquid phase. <IMAGE>
Patent GB-2086836-A (GB)
Title: Paint containers
IPC: B44D3/00
Filed: 1981-10-06
Abstract: A paint container includes a radially inwardly facing annular sealing wall 5 on the top of the container, the sealing wall having a depth D of at least 4 mm and there being a free space L projecting at least 4 mm radially inwardly of the sealing wall and extending in a complete circle around the inside of the sealing wall. In use, the container is housed in an outer vessel, a conduit passes through the outer vessel, through an aperture in the top of the container, and extends to the bottom of the container, paint being pumped through the conduit by a pressurizing unit. The outer vessel includes a circular seal member (33) mounted on a radially outwardly facing wall extending downwardly from the top of the vessel and cooperating with the sealing wall on the container. <IMAGE>
Patent GB-2108910-A (GB)
Title: Venting of pens
Inventor: GUBBAY GEOFFREY YORKE
IPC: B43K7/10
Filed: 1981-11-04
Abstract: A pen comprises a writing tip (2) and an ink reservoir (3) enclosed by an insert (7). The writing tip (2) is secured in the insert (7) and the insert is enclosed by the pen body (1). Vents (14) between the interior of the insert (7) and the exterior of the pen open to the exterior in the region of the juncture of the tip (2) and the insert (7). The pen may be in the form of a tube of toiletry with the body (1) filled with mock toiletry (18), or in the form of a bottle filled with liquid. <IMAGE>
Patent GB-2089583-A (GB)
Title: Induction Motors
IPC: H02K17/16
Filed: 1981-11-20
Abstract: An induction motor with an improved torque/slip characteristic has a solid rotor 12 having longitudinal grooves 10 running parallel to the axis of rotation which connect with circumferential grooves 14 at each end of the rotor. The rotor is plated with copper so that the grooves are filled with copper. The rotor is then machined over the cylindrical outer surface to produce a solid, non- laminated rotor having high- conductivity paths 16 in the longitudinal grooves connected by high-conductivity short-circuiting rings 18 in the circumferential grooves. In a modification the longitudinal grooves may be skewed. Other high conductivity material may replace copper, for example aluminium. <IMAGE>
Patent GB-2114078-A (GB)
Title: Underwater survey system
Inventor: REDSHAW PETER RAYMOND
IPC: B63B21/66
Filed: 1982-02-04
Abstract: An underwater pipeline or seabed can be surveyed using two remote vehicles towed by a craft (1), such as a surface ship. One of the vehicles (2) has negative buoyancy and is linked directly to the craft, for example by a tow-cable which extends in use at a small angle to the vertical. The other vehicle (3) is linked to the first vehicle, for example by a tow cable, so as to be towed behind same. <IMAGE>
Patent GB-2093067-A (GB)
Title: Removing electro-deposit from rotating cylindrical electrode
IPC: C25C7/00
Filed: 1982-02-12
Abstract: The electrodeposit (e.g. copper powder) is removed from the electrode (1) in such a manner that a rough electrodeposit is retained on the electrode surface. By only removing an outer portion of the electrodeposit the electrode retains a much higher current capacity. The electrodeposit may be removed by air-blasting, ultrasonic vibration or a scraper (4, 14). Preferably the scraper scrapes not more than 0.1 of the cylindrical area of the electrode in one revolution thereof. <IMAGE>
Patent GB-2107140-A (GB)
Title: Fault indicator for domestic electrical systems
Inventor: FERETTINI MARIA PIA
IPC: H02H3/04
Filed: 1982-03-25
Abstract: A domestic electrical system is provided with a unit 1 which monitors the system for a number of different possible fault conditions and provides an indication when a fault occurs, the indication identifying the nature of the fault. The unit 1 may be incorporated in a consumer's unit 8. The fault conditions detected may be: residual current (i.e. earth leakage); short- circuit, overcurrent (detected thermally); supply failure. <IMAGE>
Patent GB-2097275-A (GB)
Title: Improvements in fluid mixing devices
IPC: B01F5/04
Filed: 1982-04-27
Abstract: A body part 100 comprises a main flow passage 110 formed with an emulsion chamber 120 and a discharge outlet 130, a bore 150 for supplying a first fluid to the chamber 120 by way of an inlet 160, and an internally threaded bore 180 for receiving a coupling piece for supplying a second fluid to the chamber 120. The inlet 160 is surrounded by a very thin annular wall 170 which forms a vena contracta at the inlet 160. In use a narrow jet of first fluid enters the chamber 120 by way of the inlet 160 and second fluid is drawn into the chamber 120 due to the creation of a low pressure zone in the chamber 120 and is thoroughly mixed with the first fluid. The resultant mixture is discharged from the device by way of the outlet 130 and a back flow of air along the main flow passage 110 is prevented by the decreasing cross-sectional area of the passage 110 in the opposite direction to the direction of flow of the mixture therethrough. <IMAGE>