baber/WOPTO huggingface dataset:
Patent GB-1493270-A (GB)
Title: Discharge lamps
IPC: H01J61/54
Filed: 1974-12-24
Abstract: 1493270 Starting discharge lamps MATSUSHITA ELECTRONICS CORP 24 Dec 1974 [28 Dec 1973] 55745/74 Heading H2H [Also in Division H1] A conductor 14 attached to the outer wall of the arc tube 1 of a discharge lamp, having a filling of sodium, a metallic buffer gas and a starting gas, e.g. a neon-argon mixture, is located near the electrode at one end of the tube and is connected to the electrode at the other end of the tube by an arrangement which permits a starting potential to be applied initially to the conductor 14 and then, once the arc has been struck, allows the potential of the conductor 14 to float. This arrangement may comprise an element 15 having two opposed spaced apart electrodes carried by an insulating bead to provide a capacitive coupling between the conductor 14 and the electrode. Alternatively, as shown, the arrangement may comprise a bimetal switch 18 in parallel with the element 15. With the bimetal switch 18 closed, the lamp can be started at a low voltage so there is only a low potential difference between the outer and inner surfaces of the alumina tube 1 at the location of the conductor 14. The temperature and consequently the sodium vapour pressure are also low so there is no diffusion of sodium through the envelope and no blackening at the location of the conductor 14. As the temperature increases the bimetal switch 18 opens and the conductor 14 is left "floating". The bimetal switch may be heated additionally by a heater connected in series therewith. In an alternative arrangement the lead to the conductor 14 is extended through the outerenvelope 11 to an external switch. The outer envelope 11 may contain getters 12, and may be evacuated.
Patent GB-1473410-A (GB)
Title: Method of and tool for cutting blocks of foamed plastics material
Inventor: EISELT GUNTER
IPC: D07B1/00
Filed: 1974-12-30
Abstract: 1473410 Band sawing G EISELT 30 Dec 1974 [3 Jan 1974 6 Feb 1974 4 Sept 1974] 56011/74 Heading B5L [Also in Division D1] In a band saw for cutting blocks of foamed plastics material the saw band comprises an endless flexible rope, e.g. of steel or plastics such as polyamide, and a flexible wire, e.g. of steel, heilcally wound around the rope, the rope and wire diameters being respectively 0À5-2 mm. and 0À1-0À3 mm. In Fig. 2, the band comprises a steel wire rope 11 having helically wound therearound a steel wire 12. In Fig. 8, the rope is formed by winding a number of turns of wire 23 to produce an annular body 24, the turns of wire being bound together by adhesive and/or the helically winding therearound of the wire 12, and the ends 25, 26 of the wire 23 being preferably connected together as by soft solder or cementing. The rope-forming wire 23 may be 0À1-0À3 mm. diameter. In Fig. 4 (not shown) a further wire is helically wound around that helically wound around the rope. In Fig. 6 (not shown) said further wire is helically wound around a pair of wires helically wound around the rope. In Fig. 7 bristle-like tearing elements 22 are retained as by clamping between a rope 20 and a wire 21 helically wound therearound. As shown in Fig. 1, the saw band, 10, is entrained over four horizontal-axis pulleys 6 one of which is driven by a motor 7. The cutting run 9 of the band extends between pulleys disposed above and below a worktable 1 so as to be able to cut a workpiece 8 placed on said worktable. Saw band tension and speed are respectively 5-30 kiloponds and 30-60 metres per second.
Patent GB-1421506-A (GB)
Title: Derailleur for a bicycle
IPC: B62M9/126
Filed: 1973-12-04
Abstract: 1421506 Chain-shift change-speed gear R H M HURET and J A HURET 4 Dec 1973 [15 Jan 1973] 56049/73 Heading F2D In a derailleur gear a yoke comprising spaced plates 13, 14 carrying a chain-guide roller 9 for shifting the chain 2 1  between sprockets 1 1  . . .1 5 , and a chain-tensioning roller 10, is biased by a spring 21 about a pivot pin 11 to tension the chain, the assembly is movable laterally for chain shifting by a cable (not shown) connected to a parallelogram linkage 5, 6, 7, 8 of which the element 7 is fixed, and the pin 11 is supported by the member 8 of the parallelogram linkage by means that allows it to move freely towards and away from the sprocket axis 3 so that the roller 9 may be positioned close to the sprocket in use. As shown, the pin 11 forms one pivot of a second parallelogram linkage 16, 17, 18, 19 of which the element 16 is fixed to the element 8. In a modification the pin carrying the yoke and the chain-guide roller is situated atthearticulation of the links 18, 19, and in another modification the second parallelogram linkage 16, 17, 18, 19 is replaced by sliding elements.
Patent GB-1400899-A (GB)
Title: Machines for shelling kernel fruits
IPC: A23N5/00
Filed: 1973-12-04
Abstract: 1400899 Peeling chestnuts L BRETON 4 Dec 1973 [14 Dec 1972] 56096/73 Heading A2Q A machine for shelling kernel fruits, particularly chestnuts, comprises a pair of endless belts 11a and 13a having spaced operative runs and driven at different speeds and between which the kernel fruits may travel, thereby being shelled by rubbing against the belts, one of the belts 11a being supported along its linear operative rim by a set of spaced rollers 12a having parallel coplanar axes, the second belt 13a being guided along its operative rim by a second set of spaced rollers 14a having their axes parallel to each other and to the axes of the first set, said second set of rollers being so arranged that the second belt follows a sinuous path turning towards and away from the first belt and that the second belts closest points of approach to the first belt are halfway between two of the rollers of the first set. Each of the rollers of the first set may be spring-biased upwards against a screw-adjustable stop (Fig. 3 - not shown) so that they give under pressure and do not crush the fruit. Each of the lower members 15a of the second set of rollers may be resiliently mounted. The belt surfaces may be roughened either by a textured pattern or by a coating. The second belt may run faster than the first. Two or more such machines may be arranged side by side in the same frame.
Patent GB-1405507-A (GB)
Title: Extrusion machine
IPC: B29C48/46
Filed: 1972-12-07
Abstract: 1405507 Mixing apparatus G B GROOM 6 Dec 1973 [7 Dec 1972] 56540/72 Heading B1C [Also in Division B5] An extruder comprises opposed stator surfaces between which plastics material is impelled between an inlet and a die, by a rotor comprising plurality of blades with adjacent blades being separated by a space extending continuously between the opposed stator surfaces, with which the confronting blade surfaces provide a clearance e.g. of .002 to .004", in which the material is sheared. In the Fig 1 and 2 embodiment, the stator surfaces comprise planar surfaces of a casing 16 within which material is conveyed outwardly from an inlet 26, to circumferentially disposed die outlets 28, by the blades 12 mounted for rotation to a central shaft 18 and having outer ends lets 28, by the blades 12 mounted for rotation to effect the outward impelling. At their outer ends, the 'blades are supportingly interconnected by bridges 12A, and the blades may be channeled as at 30 to permit increased mixing flow of the material. The stator is provided with heaters 7 and coolant is circulated through channels 34 to reduce heat conduction to bearings supporting the shaft 18. In the Fig 3 and 4 embodiment (not shown), the blades at their outer ends are inclined in the direction of rotation to convey material, from a radially outer inlet, inwardly towards a centrally disposed single outlet defining a geometrically solid extruded section. In the Figs 5 and 6 embodiment for the extrusion of strands from outlets 64, the stator surfaces comprise the opposed surfaces of concentric barrels 56, 54, between which the blades 52 extend in helical configuration and are rotated 'by a shaft 57 supported by a combined thrust and journal bearing 58. The blades 52 are connected by bridges 52A, and may be provided with mixing channels similarly to the Fig 1 and 2 embodiment. The barrels are heated at 66, and the bearing retained cool by coolant circulation channel 68. The space between the barrels 56, 54 may be cylindrical, or may taper towards the outlet. The apparatus may also convey material in a direction intermediate directions axially of, and perpendicular to, the axis of rotation of the rotor. The outlet of any one of the embodiments may be connected to the inlet of another, and the embodiments may include an archimedean screw or screws for conveying material to and/or from the inlet and outlet. The extrudate may also be a film, sheet, or tubular. The material may comprise plasticised or unplasticised P.V.C. compound, or polyethylene, polypropylene and polystyrene, into which pigment is mixed during the extrusion.
Patent GB-1284588-A (GB)
Title: Suction dredger
Inventor: KONING JAN DE
IPC: E02F3/90
Filed: 1969-11-20
Abstract: 1284588 Suction dredgers INGENIEORSBUREAU VOOR SYSTEMEN EN OCTROOIEN "SPANSTAAL" NV 20 Nov 1969 [20 Nov 1968] 56946/69 Heading E1F A suction dredger comprises a suction pipe 30 connected to a pump 3 mounted on a frame 26 which is swingably suspended at 25 from a ship 1, the pipe having a first suction mouth 22 for spoil and a second suction mouth 15 for water. The concentration of particulate material and water mixture is measured by a pick-up 45 and is maintained constant within predetermined limits. The pump 3 discharges to a further pump 28. The suction mouth 15 is controlled by a slide 36 moved by a remotely controlled unit 35. In a second embodiment, Figs. 2, 3 (not shown), the second suction mouth is provided by the lower end of a pipe which is slidably mounted within the bottom part of the suction pipe and in communication with the pump 3, water passing to the second suction mouth from inlets in the said bottom part above said mouth. A remotely controlled hydraulic jack adjusts the position of the second suction mouth above the first suction mouth to keep it near to the level of the spoil which has passed through the first suction mouth due to suction of the pump 3 and to the pressure of spoil external to the suction pipe. The latter pressure is sensed by a pick-up and the slidable pipe is adjusted according to this pressure or in dependence upon the mixture concentration required.
Patent GB-1214818-A (GB)
Title: Improvements in and relating to apparatuses for introducing one fluid into another
Inventor: LARSEN HANS ANDREAS
IPC: B01F5/04
Filed: 1967-12-15
Abstract: 1,214,818. Mixing fluids. H. A. LARSEN. 15 Dec., 1967 [19 Dec., 1966], No. 57224/67. Heading B1C. Apparatus for mixing fluids comprises a tube 4 up which flows a denser fluid/liquid or gas) and having a coaxial rotatable hollow shaft 1 carrying vanes 9 of V cross-section adjacent apertures 10, whereby a lighter fluid liquid or gas) is induced fro mthe interior of the shaft into the denser fluid by the reduction of pressure behind the vanes. The lighter fluid may enter the shaft through apertures 11 cooperating with scoops 12 (see also Fig. 2, not shown). The vanes 9 may be angled on the shaft (see Fig. 4, not shown) to produce an impelling action and they may be straight or curved (see Figs. 3, 5 and 6, not shown). The shaft may have a solid extension 5 carrying impeller blades 6 cooperating with fixed flowstraightening vanes 8; similar flow-straightening vanes may be used in cooperation with the vanes 9.
Patent GB-1494731-A (GB)
Title: Dissolving gases
IPC: B01F3/04
Filed: 1973-12-12
Abstract: 1494731 Aerating liquids BOC INTERNATIONAL Ltd 12 Dec 1974 [12 Dec 1973] 57468/73 Heading B1C A gas is dispersed in a liquid through at least part of the surface of a propeller having hollow blades 18 of aerofoil cross-section, and the permeable portions having pores which will create bubbles of 0.1mm. diameter or less; they may be of sintered metal or ceramics. The parts 10, 12 may be of aluminium. The flow of liquid is preferably downward and may be enhanced by baffles or ducts. The method and apparatus are useful in fish farming and sewage or effluent treatment.
Patent GB-1337992-A (GB)
Title: Voltage reference circuit or voltage threshold detection circuit  incorporating such a reference circuit
IPC: F02P7/067
Filed: 1970-12-04
Abstract: 1337992 Ignition system R C A CORPORATION 4 Dec 1970 [18 Dec 1969] 57593/70 Heading F1B [Also in Division G3, H3] A voltage reference circuit comprises a common point, such as earth, first and second stacks D1, D3, D5 and D2, D4, D6 matched to each other and each of equal pluralities of series connected asymmetrically conductive devices, each stack being connected between the common point and a respective separate point and means R, R<SP>1</SP> to pass current and to predetermine a ratio between first and second currents passed through the stacks in their forward direction, the common point representing the same polarity of both stacks and the separate points delivering the difference between the voltages developed across the two stacks as the voltage reference. The voltage reference circuit may be used in a voltage threshold detection circuit which includes a differential amplifier Q10, Q12, Q14, Q16, having the stacks D1, D3, D5 and D2, D4, D6 providing the reference voltage and the differential amplifier provides a signal output at C when an input signal at A, B attains a predetermined threshold value.The reference voltages are selected by determining the current ratio through the diode stacks D1, D3, D5 and D2, D4, D6 by suitable selection of resistors R, R<SP>1</SP>. The diodes D1, D3, D5 determine the high threshold voltage of the circuit and the diodes D2, D4, D6 determine the low threshold voltage. The detection circuit may be formed as an integrated circuit so that diodes D1-6 can be formed of transistors connected like Q34. The diodes are matched with regard to their forward voltage drops and the stacks compensate for supply voltage and temperature variations. With zero input from pick up coil 39 of a pulse distributor of an automotive ignition system the detection circuit is in the low level state with transistors Q10, Q12, Q24, Q26, Q30, Q32 and Q34 off and Q14, Q16, Q20 and Q22 on. As the input at A, B increases towards the high threshold the state of these transistors begin to reverse and regenerative feedback from the output transistor Q26 via Q34 and Q32 cause transistor Q30 to shut the diodes D1, D3, D5 to change the state of the circuit so that transistors Q10, 12, 24, 26, 30, 32 and 34 are conductive and Q14, 20 and 22 are off. Transistor Q16 is kept from completely turning off by the biasing potential applied from Q18. When the input signal A, B decreases to zero the circuit flips back to its initial state. Constant current sources are provided by Q15, R17, D19 and Q25, R27, D29. As an alternative way of obtaining the required current ratio through the diode stacks, the junctions of the diodes D2, D4, D6 could be made larger. Transistor Q34 may be replaced by a diode.
Patent GB-1160730-A (GB)
Title: Improvements in or relating to the Production of Printed Circuits
Inventor: HIROHATA HYOGO
IPC: H05K3/10
Filed: 1966-12-23
Abstract: 1,160,730. Printed circuits. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 23 Dec., 1966, No. 57786/66. Heading H1R. [Also in Division C7] In a method of producing a printed circuit on an insulating base 10, and forming a platedthrough hole 13 therein, the desired circuit pattern is formed on the surface of base 10 in adhesive ink 11; metallic powder 12 is applied to the said surface and is retained on the adhesive pattern; the hole 13 is punched through the pattern and the underlying base 10; the whole assembly is immersed successively in solutions of stannous chloride and palladium chloride to deposit an activating layer 14 on all surfaces, which layer is then removed by brushing and washing except from the wall of the hole 13; and finally a conductive layer 15 is deposited by electroless plating on to the powder pattern 12 and the activating layer 14 on the hole wall. The base 10 may be a plate of glass, ceramic, or synthetic resin, or preferably a phenolic resin bonded paper laminate provided on its major surfaces with coatings 16, 17 of cured phenolic resin varnish. The adhesive ink 11, which may be applied by silk screen printing, preferably comprises epoxy resin, polyamide hardener, and carbon in a vehicle of benzyl alcohol. The metallic powder 12 may comprise copper particles, and is secured to the adhesive ink 11 by light pressure, after which surplus powder is removed by shaking and tipping the base and the ink is heat-cured. The stannous chloride and palladium chloride solutions may contain conc. HCl, and the conductive layer 15 may be applied in an electroless Cu plating bath comprising an aqueous solution of cupric sulphate, ethylenediamine tetra-acetic acid, sodium hydroxide, and formaldehyde. The powder 12 may alternatively comprise Ni, Ag, Au, Pt, Pd or their alloys for electroless Cu deposition, or Ni, Fe, Co, Al, Be, Pt, Pd, Rh or their alloys when electroless Ni or Co plating is preferred.
Patent GB-1269649-A (GB)
Title: Colour-proofing process
Inventor: TASKER SAMUEL
IPC: G03F3/10
Filed: 1968-12-06
Abstract: 1,269,649. Photographically producing colour proofs. S. TASKER and D.S. TASKER. Nov.28, 1969 [Dec.6, 1968], No.57953/68. Heading G2C. A colour proofing process comprises making a set of screened separation positives from a coloured original, making a set of etch-bleach reversals from the screen positives on photographic film &c. support of which is unreceptive to dyes and the emulsion is dye receptive, dyeing the reversals and transferring the dyed images on the reversals in sequence and in register to a paper receptor. The photographic film is preferably a gelatine emulsion on a cellulose acetate support which may be coated on the reverse side with a varnish unreceptive to dyes. The dye images may be transferred by inhibition.
Patent GB-1421060-A (GB)
Title: Winding machine
IPC: B65H54/547
Filed: 1973-12-17
Abstract: 1421060 Avoiding critical rotational speeds BARMAG BARMER MASCHINENFABRIK AG 17 Dec 1973 [16 Dec 1972] 58298/73 Heading D1J A machine for winding fibres has a bobbin receiving chuck 8 that is rotatable about a horizontal axis, the chuck being resiliently mounted in a pair of bearings 11, 12; and a brake or drive system 17 connected to a shaft 20 that is rigidly mounted in radially rigid bearings 21, the shaft 20 being connected to the chuck 8 through two spaced apart coupling elements 23 acting as, or tending to act as, universal joints. The bearings 11, 12 may include rubber elements 13, 14. As shown in Fig. 4 the coupling elements 23 may each comprise a shaped portion of the shaft in the form of two plate-like shaft tapers 24, 25 offset through 90 relative to one another. Alternatively, Fig. 5 (not shown) the elements 23 may be weakened portions of the shaft made by cutting threads in it. The invention is stated to so lower the critical winding speed of the shaft that it is always below the range of speeds of a normal winding cycle.
Patent GB-1482202-A (GB)
Title: Door mounting
IPC: E05F1/06
Filed: 1973-12-18
Abstract: 1482202 Self closing door mountings TIMBER RESEARCH & DEVELOPMENT ASSOCIATION 17 Dec 1974 [18 Dec 1973] 58546/73 Headings E2F and E2M A door is mounted, so as to close under its own weight when opened in either direction, by means of an upper hinge comprising a pivot pin 31 secured to the door and engaged in a member 33 secured to the door frame, and a lower hinge comprising two spaced rollers 23 secured to the door and engaging in slots 14 formed in a floor plate 15; one of the rollers 23 pivoting about axis 13 when the door is opened while the other slides in its slot 14, and the pivoting roller 23 defining with the pin 31 a tilted pivot axis for the door causing the door to close under its own weight. The pin 31 has a part spherical head portion 32 which engages in a corresponding cavity 34 in the member 33. The rollers 23 are mounted on plates 22 and the pin 31 is adjustably mounted on a plate 35. Fire restricting strips 19 and 37 are mounted in door frame and door recesses. The pin 31 is screwed to a required depth in a threaded sleeve when mounted and plate 35 is screwed down the pin to lock it in position.
Patent GB-1255427-A (GB)
Title: Speed control valve
IPC: F16K47/10
Filed: 1969-12-03
Abstract: 1,255,427. Valves. AUTOMATIC SWITCH CO. 3 Dec., 1969 [3 Dec., 1968], No. 58952/69. Heading F2V. A valve for permitting free flow in one direction and restricted flow in the opposite direction comprises a valve member 21 movable away from its seat against the force of resilient means 22 and a passageway 25, 26, 27 in the valve member which may be varied by manually adjustable means 30. A threaded stud 33 fitted with a plastic knob 35 adjusts the means 30 which may be adjusted downwardly to a sufficient extent first to close the passageway completely and then to hold the member 21 closed. A cam portion at the lower end of a pivoted lever 42 may be used to distort the lower portion of the knob 35 into engagement with a knurled portion on the valve bonnet to prevent accidental rotation of the stud 33.
Patent GB-1242778-A (GB)
Title: Resilient bushing
IPC: F16F1/387
Filed: 1969-12-03
Abstract: 1,242,778. Suspension link connections. FORD MOTOR CO. Ltd. 3 Dec., 1969 [11 Dec., 1968], No. 59054/69. Heading B7D. [Also in Division F2] In a resilient bushing a resilient annulus 24, Fig. 6, is bonded to an inner tube 18, 20 and part-bonded to an outer tube 22, the surface region marked with crosses 36 being bonded but the diametrically opposite surface region being unbonded. Thus on downward movement (Fig. 6) of the inner tube, the lower part 28 of the annulus is compressed and the upper part 30 merely displaced, whereas on upward movement the part 28 is tensioned and the part 30 compressed. This achieves different spring rates in two opposite directions. The effect can be enhanced by eccentric disposition of the inner tube as shown, e.g. to obtain a 4:1 ratio between the two rates. Figs. 1 and 2 depict the bushing 16 of Fig. 6 incorporated in a vehicle suspension in which a suspension link 10 extending in the fore-and-aft direction on a vehicle is coupled to the vehicle body by the bushing with the link attached to a bolt 26 in the bushing's inner tube and the bushing's direction of minimum rate lying along the link. The difference in forward and rearward spring rates prevents the development of resonant " shake."
Patent GB-1285719-A (GB)
Title: Improvements in or relating to switching devices
Inventor: DAVIES TERRENCE ARDERN
IPC: H01H51/04
Filed: 1968-12-12
Abstract: 1285719 Electromagnetic relays PLESSEY CO Ltd 9 Dec 1969 [12 Dec 1968] 59084/68 Heading HIN An electromagnetic relay has a flat disc armature 4 in a chamber 2 of a non-magnetic, preferably plastics, housing 1 arranged so that the armature is movable in its own plane to bridge any two of three or more magnetic contact rods or wires 5, 6, 7 which are insulated from each other and surrounded by respective energizing coils 9, 10, 11. The outer ends of the rods or wires 5, 6, 7 may be magnetically interconnected by a flux return ring (Fig. 3, not shown) which may be made of ferrite. The armature may be made stable in one or more positions by the provision of bias windings, permanent magnets or by making the rods or wires 5, 6, 7 of remanentmaterial. The inner ends of rods or wires and the edge of the armature may be gold plated and slightly elliptical.