baber/WOPTO huggingface dataset:
Patent GB-1135413-A (GB)
Title: An electret and method of making the same
IPC: H01G7/02
Filed: 1966-10-19
Abstract: 1,135,413. Electrets. PHILIP MORRIS Inc. 19 Oct., 1966 [23 Oct., 1965], No. 46767/66. Addition to 1,046,142. Heading H1M. An electret is made by heating an electretforming material at an elevated temperature until a substantially uniform temperature is obtained throughout the material, subjecting the material to an electric field of 0À001 to 1000 kilovolts while maintaining the temperature for a period of from one microsecond to twelve hours or more, and cooling the electret-forming material to a temperature below 30‹ C. while maintaining it in the field, and then removing the material from the field. The preferred electret-forming material is polyethylene terephthalate which forms an electret having a stable hetero-charge, but it may also be cellulose acetate, polyvinylidene chloride, P.C.T.F.E., P.T.F.E., P.V.C., or polymethylmethacrylate, or ceramics such as alkaline earth metal titanates or zirconates. In the case of plastics electret-forming materials, the forming temperature is above the glass temperature but below the softening point. The polyethylene terephthalate may contain semiconducting or ferro-electric materials such as barium or calcium titanate or zirconate or it may be coated with water-repellent materials, e.g. silicones or P.T.F.E. The material should have two flat surfaces on opposite sides and may be disc-shaped, doughnut-shaped or a flat sheet or plate. Preferably, for continuous operation it is in the form of a film. As shown, a film 20 of e.g. polyethylene terephthalate is passed, in zone 25, between charged rollers 21 and 22, the zone being mantained at 180- 190‹ C. by means of hot gas passed through ports 25a, 25b. In zone 26, maintained at about 30‹ C. by means of air passing through ports 26a, 26b the film 20 is cooled while remaining in the field of charged rollers 23, 24.
Patent GB-1122015-A (GB)
Title: Pneumatic power-assisted steering system
IPC: B62D5/10
Filed: 1965-11-04
Abstract: 1,122,015. Power assisted steering. CSEPEL AUTOGYAR. 4 Nov., 1965 [25 Nov., 1964], No. 46828/65. Heading B7H. A pneumatic power-assisted steering system for a vehicle comprises a pivotally mountable servo-cylinder 7 connected, by a piston rod 7d, to a vehicle steering arm 9, a divided drag link 3 including a casing 4 rigidly secured to a part 3a of the drag link and enclosing, for relative axial movement between centralising springs 4a, 4b a part 3b of the drag link, and a master valve 5, which is mounted on the casing 4 and controls the supply of pressure air to the chambers 7b, 7c of the servo-cylinder 7, a valve element 5a of the valve 5 being actuated by a single armed lever 4f which is fulcrummed in the casing 4, and coupled to the drag link part 3b near the fulcrum to give a high transmission ratio.
Patent GB-1358715-A (GB)
Title: Manufacture of semiconductor devices
IPC: H01L21/00
Filed: 1971-10-07
Abstract: 1358715 Semi-conductor devices FUJITSU LTD 7 Oct 1971 [9 Oct 1970] 46829/71 Heading H1K A region 14 is formed in a semi-conductor substrate 10 by diffusion from a portion of a doped oxide layer 11, whcih portion is covered by an oxidation-preventing film 12. The diffusion is effected by heating the structure in an oxidizing atmosphere containing steam so that where the doped oxide layer 11 is unprotected further oxidation of the substrate 10 occurs and the dopant in the layer 11 out-diffuses into the atmosphere. Substantially no diffusion therefore occurs below the unprotected parts of the layer 11. An IGFET may be made by providing two oxidation-preventing films 12, 13, resulting in the formation of source and drain regions 14, 15. Using a mask whose edges comprise the films 12, 13 the oxide 11 is etched away from the area between the regions 14, 15, and a gate insulation is provided by oxidation. In a P-channel Si device the substrate 10 is N-type, the layer 11 is formed of borosilicate glass and the oxidation-preventing films 12, 13 are silicon nitride. For an N-channel device the substrate 10 is P-type, the layer 11 is a phosphosilicate glass and the films 12, 13 are Mo or W. Aluminium oxide, Si, Cr and Ni are also mentioned as suitable oxidation-preventing materials.
Patent GB-1020928-A (GB)
Title: Fluid coupling arrangement
IPC: F16L37/34
Filed: 1962-12-12
Abstract: 1,020,928. Pipe couplings. AEROQUIP CORPORATION. Dec. 12, 1962 [Dec. 27, 1961], No. 46973/62. Heading F2G.  In a fluid coupling comprising interconnectible members 10<SP>1</SP>, 73<SP>1</SP>, Figs. 1 to 5 (not shown), incorporating valves biased by springs to the closing positions thereof and opened upon interconnection of the members, the members 10<SP>1</SP>, 73<SP>1</SP> respectively are mounted on mounting members 158, 146. The member 146 carries coaxial projections 154 and the member 158 is provided with coaxial pivots on which are mounted levers 168 having cam surfaces engageable with the projections 154 upon aligning and intermating guide elements comprising pins 180 and holes 157. Locking recesses are formed in the levers whereby simultaneous rotation of the levers will draw the members 146, 158 toward each other interconnecting the members 10<SP>1</SP>, 73<SP>1</SP>, upon the projections 154 being received within the recesses the members 10<SP>1</SP>, 73<SP>1</SP> are locked together in mutual communication. The coupling incorporates electric contact members 182.
Patent GB-1087555-A (GB)
Title: Improvements in or relating to gas or fume scrubbers
IPC: B01D47/06
Filed: 1964-11-19
Abstract: 1,087,555. Centrifugal separators. R. W. HUSBAND, Nov. 19, 1965 [Nov. 19, 1964], No. 47149/64. Heading B2P. In a gas scrubber, e.g. for cleaning fume arising from a coal carbonisation plant and containing a mixture of tar vapour, steam and fine coal, the gas to be cleaned is led tangentially into a cyclone 2,4 in which it is subjected to the cleaning action of water sprayed by means of nozzles and of centrifugal force and from which it passes upwards through a convergent-divergent annular passage 12, 16 formed between a centrally disposed frustoconical thimble 7, 8 and a hollow plunger 9, 10, 11 mounted centrally within the thimble for limited axial movement, the passage 12, 16 emerging into the interior of a scrubbing tower 17 in which the gas is again subjected to the cleaning action of water sprayed by means of nozzles 18. The plunger is guided by means of members 13 extruding from the conical wall 7 of the thimble and by means of a tubular guide 14 supported from the wall of the conical portion 4 of the cycline. The lower end of the plunger has a flange 15 which engages the guide 14 to limit the upward movement of the plunger whose downward movement is limited by stops secured to the interior of the wall 7 of the thimble. The top of the scrubbing tower 17 is connected via an expansion joint 21 to a centrifugal exhaust fan 22 the outlet of which communicates with the atmosphere via a trap 23, e.g. for removing the last traces of tar. A hinged access door (30), Fig. 3 (not shown), is provided in the cylindrical portion 2 of the cyclone. The effluent from the lower end of the conical portion 4 of the cyclone passes by way of an expansion joint 22 and a pipe (41), Figs. 4 and 5 (not shown) into an inclined sludge tank (42) provided with a weir (47) over which the lighter impurities flow into a discharge funnel (48) and with a siphon (43) by means of which the tank is rapidly emptied when the liquid starts flowing down the leg (49) thus flushing away the heavier impurities deposited in the lower part of the tank. When treating coal carbonisation fume, the relatively large impurities are separated in the cyclone. The gas stream leaving the cyclone comprises a mixture of gas, water droplets and relatively fine suspended impurities. The stream velocity increases rapidly through the convergent passage 12 covering the fine particles of coal and tar to coalesce with the water drops to form an emulsion. The upward flowing emulsion is expanded into a water bath formed in the divergent passage 16 so that the impurities scrubbed out from the gas stream are floated from this bath into the hollow centre of the plunger 9, 10, 11 and are returned to the base of the cyclone. The scrubbing action is controlled by the plunger which is so weighted as to rise and fall in accordance with the difference between the pressure in the cyclone and that in the space above it. Dimensions of the scrubber are given.
Patent GB-1325571-A (GB)
Title: Apparatus for use in dispensing a multiple component mixture
IPC: B01F15/04
Filed: 1970-10-05
Abstract: 1325571 Proportioning mixture constituents BRITISH UNITED SHOE MACHINERY CO Ltd 5 Oct 1970 [6 Oct 1969] 47193/70 Heading B1C Mixing and dispersing apparatus for two cellular polyurethane ingredients comprises respective metering cylinders 130, 132 filled by the ingredients under pressure and successively discharged by air cylinders 122, 124 to a variable volume mixing chamber 90 in a cylinder 91 having a rotatable agitator 106 (see also Figs. 5 and 10, not shown). After a time delay an air cylinder 84 discharges the cylinder 91 through outlet bores (222, 224 Fig. 10 not shown). A flange 92 actuates a switch S10 to advance a member (226, Figs. 7-11 not shown) to clear and close the outlet bores (222, 224). The mixing cycle concludes by the supply to mixing chamber 90 from cylinder 132 of a small quantity of ingredient, determined by limit switch S8, to dilute and render inactive the residue; this forms part of the next shot. The quantities supplied by cylinders 130, 132 are determined by respective limit switches S4, S6 which also actuate the inlet and outlet valves and the time delay; switches S5, S7 reduce the final rate of delivery to prevent overshoot. The switches S5, S6, S7 are mounted on supports 164, 170 the positions of which are dependent on that assumed by a pivoted lever 150 the upper end of which abuts one of twelve adjustable stops 66 (see also Fig. 5, not shown). The ratio of the ingredients can be altered by rotation of a knob 194 which causes a roller (188, Fig. 4 not shown) connected to the support 170 to traverse a slot 184 in the lever 150 and alter the position of support 170 relative to that of support 164. As described the apparatus forms part of a shoe moulding machine and the cylinder 91 discharges into a sole bottom mould (16 Figs. I and 7-11, not shown); there are twelve moulding stations 11 arranged in an arc (see Fig. 1 not shown) which is traversed by the apparatus, the adjustable stop 66 associated with the respective station being brought to the lowest or operative position.
Patent GB-1206325-A (GB)
Title: Improvements relating to open end spinning apparatus
IPC: D01H4/10
Filed: 1968-10-04
Abstract: 1,206,325. Break spinning. SCHUBERT & SALZER MASCHINENFABRIK A.G. 4 Oct., 1968 [10 Oct., 1967], No. 47197/68. Heading D1D. A break spinning chamber 2 is arranged to widen towards the collecting channel 22 and the fibres are supplied to the wall of the chamber at a distance h from the channel which is at least equal to the staple length of the fibres to be spun.
Patent GB-1442660-A (GB)
Title: Welding head for high frequency resistance welder
IPC: B23K13/04
Filed: 1973-10-10
Abstract: 1442660 Welding by pressure PATELHOLD PATENTWERTUNGS - UND ELEKTROHOLDING AG 10 Oct 1973 [12 Oct 1972] 47237/73 Heading B3R A welding head for a high frequency resistance welder comprises two electrode carriers 8, 9 on which electrodes 6, 7 are slidably carried, compressed air rams 18, 19 for pressing the electrodes against a workpiece and flexible electrical connections 10, 11 for connecting the electrodes to a source 12 of high frequency current the carriers 8, 9 being so mounted that the electrodes converge in the direction of the ends of the electrodes which are pressed against the workpiece, and the electrodes being adjustable longitudinally of the carriers. In an embodiment a tube 5 with gapped edges is passed between welding rollers 2, 3 after the edges have been heated by high frequency current supplied by the electrodes 6, 7 engaging the edges in advance of the apex of a V formed by the edges. The electrodes are adjustably clamped in the carriers 8, 9 secured, via insulators 22, 23 to the piston rods 20, 21 of two pneumatic cylinders 18, 19 secured to the frame 1 of the welding machine. Cooled connectors 14, 15 supply the current to the electrode carriers from flexible metal strips 10, 11 insulated by polyfluoroethylene 13 and connected to the current source 12 also carried on the frame 1 preferably in a unit with the head. The edges of workpieces may also be welded in the head and limit switches may detect a predetermined travel of each piston rod to stop the machine.
Patent GB-1039338-A (GB)
Title: Improvements in the manufacture of record players and the like
Inventor: MARGOLIN SAMUEL BERGSON
IPC: A47B47/04
Filed: 1963-12-02
Abstract: 1,039,338. Electric component housings. DANSETTE PRODUCTS Ltd. Dec. 2, 1964 [Dec. 2, 1963], No. 47498/63. Heading H1R. [Also in Divisions G5 and H3] A cabinet 10, e.g. for a record player, tape recorder, or radio, has one wall 1 slidable behind guides, the wall having a floor member 2 attached to its lower edge so as to form part of the floor of the cabinet. The wall 1 may act as a baffle board, and may carry controls for the equipment mounted in the cabinet. Attachment of the wall 1 is by means of screws 5 passing through resilient feet 9 and the floor 2.
Patent GB-1440174-A (GB)
Title: Vacuum cleaner and dust bag therefor
IPC: A47L9/19
Filed: 1974-11-06
Abstract: 1440174 Suction cleaners ELECTROLUX Ltd 6 Nov 1974 [28 Nov 1973] 47984/74 Heading A4F [Also in Division B1] In a suction cleaner having when operable a dust bag within a casing, a device is provided for indicating when the dust bag is absent, the device being actuated by pressure-sensing means communicating with an air passage which is blocked by a part of the dust bag when the latter is in position in the casing. The illustrated cleaner includes means for indicating when the dust bag 14 is sufficiently full to require emptying or replacement. The dust bag 14 is sealed in an end wall 13 of the casing 12 to which is hinged a cover 11 containing an assembly of a valve 21 and a piston and cylinder device 39, 38 for operating it. Opposite sides of the piston 39 communicate with the upstream and downstream sides, respectively of the dust bag 14, via an opening 26 and via conduits 22b, 22a, a rubber funnel 24 and a hole 25 in the wall 13. The increased suction in the space 23 downstream of the dust bag 14, on filling of the latter operates the piston 39 open the valve 21 whereby suction from the space 23 is applied via conduits 22a, 27, 28a, and 28b to a piston and cylinder device 29 which then opens a micro-switch 31 to stop the cleaner motor. The conduits 28a, 28b are connected together by a funnel 32 and a hole 33 in the wall 13, a branch 34 of the conduit 28a having a further funnel 35 in alignment with a hole 36 in the wall 13, the funnel opening being normally blocked by a lug 16 on the dust bag endplate 15. In the absence of the dust bag 14 the suction in the space 23 on starting the cleaner motor is applied via the hole 36, funnel 35 and conduit 28b to the device 29 to stop the motor. The pressure in the space 23 then rises so that device 29 re-starts the motor. Repeated starting and stopping of the motor then occurs to indicate that the dust bag is absent. In an alternative embodiment the means for indicating when the dust bag is filled is omitted, the funnel 35 being connected directly to the conduit 28b. As a further alternative the micro-switch 31 may actuate an indicator lamp instead of stopping the cleaner motor.
Patent GB-978327-A (GB)
Title: Improvements in or relating to fixing brackets for curtain supporting means
Inventor: PATERSON JOHN VINCENT
IPC: A47H1/104
Filed: 1962-12-20
Abstract: 978,327. Suspending curtains. SOLARBO (PELMETS) Ltd. Dec. 13, 1963 [Dec. 20, 1962]. No. 48093/62. Heading A4B. A board 9 having parallel slotted channels 10 for the slidable reception of runner elements 11 and having a pelmet 12 is frictionally retained between the limbs 2, 4 of a bracket 1 secured to a wall 7 by screws 8, the bracket being formed by bending a rectangular strip to form the first limb 2 and doubling the strip to form a further limb 4. In a modification the first limb is also doubled to render it resilient. A resilient pad or spring (not shown) may be inserted within the channel to assist in the frictional retention of board 9.
Patent GB-1271775-A (GB)
Title: Correction fluid composition
IPC: G03F1/72
Filed: 1970-10-09
Abstract: 1,271,775. Correcting fluid. BATTELLE DEVELOPMENT CORP. 9 Oct., 1970 [7 July, 1970], No. 48150/70. Heading C3P. A correction fluid composition consists of: (1) between 40 and 60% by weight of a liquid vehicle of (a) at least 75% by volume from among halogenated hydrocarbon solvents which are nonflammable at their boiling points and have a boiling point between 70 and 170 C.; and (2) a balance of the composition of solid constituents of (a) a film-forming acrylate resin in an amount between 10 and 20% by weight of the total of solid constituents, and (b) a balance of the solid constituents substantially of: (i) an organic optical brightener/ silica-modified rutile titanium dioxide pigment consisting of at least 88% by weight of rutile titanium dioxide having incorporated therein between 0À05 and 0À6% by weight of an organic optical brightener and between 10 and 12% by weight of silica, and (ii) a flatting pigment in an amount up to 25% by weight of the organic optical brightener/silica-modified rutile titanium dioxide pigment. In examples: (1) is a mixture of trichloroethylene and tetrachloroethylene or xylene, with pine oil and sodium dioctyl sulphosuccinate (wetting agent). (2) (a) is a copolymer of methyl acrylate and ethyl and methyl methacrylates and 2 (b) (ii) is silica. Other pigments may also be present.
Patent GB-1199487-A (GB)
Title: Integral Pneumatic Tire and Wheel Construction and Method of Making the Same.
Inventor: MCHUGH JAMES HOWARD
IPC: B60C3/02
Filed: 1967-10-24
Abstract: 1,199,487. Integral pneumatic tyre and wheel assembly. J. H. McHUGH. 24 Oct., 1967, No. 48239/67. Heading B7C. [Also in Division B5] An integral pneumatic tyre and wheel assembly comprises a wheel formed of laminations of fabric bonded with resin, a tyre body formed of at least one fabric ply embedded in elastomeric material and extending between the laminations of fabric in the rim of the wheel, and an elastomeric tyre tread material bonded on the radially outermost side of the tyre body. The fabric of the laminations may be made from glass, nylon, polyester, rayon, cotton and/or metallic fibres and the bonding resin may be an epoxy or phenolic resin. The fabric ply of the tyre body may be made of materials conventionally used for that purpose. An inflatable inner tube may be located within the tyre body.
Patent GB-1361420-A (GB)
Title: Bank note testing apparatus
IPC: G07D7/00
Filed: 1971-10-19
Abstract: 1361420 Testing bank-notes S PEYER 19 Oct 1971 [20 Oct 1970] 48627/71 Heading G1A In an apparatus for testing bank-notes 1, the bank-note is placed behind a mask 4 thereby dividing it into a number of test areas a, b, c, d and illuminated by a light source 11 with an infrared filter 12. The reflected light from each area a, b, c, d is received by a corresponding photo-cell 10, each of which is held by the mask at right angles to the bank-note. The output of each photo-cell is fed to an amplifier and the outputs are fed to discriminators so that each amplifier output is compared with each of the other outputs Fig.3 (not shown). A circuit of the discriminator Fig.4 (not shown) is disclosed. The discriminator outputs are then fed in parallel to an amplifier (33) which is connected to a variable resistance and a switching stage which operates a relay to reject the note, if the signal is above a certain threshold value.
Patent GB-1237390-A (GB)
Title: Nuclear reactor installations
IPC: G21D3/04
Filed: 1968-10-14
Abstract: 1,237,390. Nuclear power plant. SIEMENS A.G. 14 Oct., 1968 [14 Oct., 1967], No. 48650/68. Heading G6C. In a nuclear reactor plant, the steam or watercooled reactor 1 and steam generator 2 are surrounded by the concrete walls 4 within the safety enclosure 6. Small leakages in the reactor coolant system are contained within 4 for short periods to permit operating personnel to leave the enclosure 6 in safety. The apertures 40 are closed by bursting discs 45 and apertures 42 lead into the fuel element depositing tanks 3, where escaping steam is condensed. Apertures 43, 44 lead to condensing ice stacks 7. The response pressure for the bursting discs in the apertures 41 is higher than the response pressure for the bursting discs in the apertures 42, 43, 44. In the event of a minor escape of steam in a room inside the biological shield, the pressure in that room increases until one or more of the apertures 42, 43, 44 bursts. After a short period the response pressure of the discs in apertures 41 is attained and steam from the interior of the biological shield enters 6.
Patent GB-1415964-A (GB)
Title: Anti-wear lubricating composition
IPC: C10M137/00
Filed: 1973-10-22
Abstract: 1415964 Lubricants &c. EXXON RESEARCH & ENG CO 22 Oct 1973 [25 Jan 1973] 49088/73 Heading C5F An additive composition comprises a tri-ester (A) of phosphorothionic acid S=P(OH) 3 , and either a triester (B) of orthophosphoric acid O=P(OH) 3 , or a salt (C) obtained by neutralizing a monoester or diester or mixture of monoester and diester of orthophosphoric acid with a monovalent organic base containing nitrogen, or a mixture of ester (B) and salt (C), with or without a solvent, e.g. a light lube oil of petroleum or synthetic origin. The organic groups in the esters must be big enough to make the esters soluble in oil, e.g. at least 12 carbon atoms per molecule of ester. The additive reduces wear when added to lubricating oils, e.g. for internal combustion engines, to ester-based lubricants for aircraft turbines, or to liquids for hydromechanical transmissions, and may be used in combination with other additives.
Patent GB-1333404-A (GB)
Title: Attachment of a hard metal bit to a circular saw blank
IPC: B23K1/19
Filed: 1970-10-15
Abstract: 1333404 Making circular saws; soldering GOMEX VERKTYG AB 15 Oct 1970 [15 Oct 1969] 49163/70 Headings B3A and B3R [Also in Division B5] A circular saw blank has one or more hard metal bits attached thereto, the or each bit being soldered to one blank by solder filling a gap defined by a surface of the bit and a surface of the blank, one end only of the gap being defined by a projection on the bit or on the blank which abuts the blank or bit respectively. A toothed circular saw blade 10 has peripheral teeth 12 to each of which a hard metal bit 11 is attached by solder 13. The bit has initially two projections 15, 16 which abut the tooth to provide a gap which is filled with solder and when the solder has hardened the outer projection 16 and part of the tooth are removed by grinding. The gap may be parallel sided or may vary in thickness from end to end and the projections may be pointed or flat and both may be on the tooth or one may be on the tooth and one on the bit.