baber/WOPTO huggingface dataset:
Patent GB-1189128-A (GB)
Title: Educational Apparatus
Inventor: JAY STEPHEN ALLINSON
IPC: G09B5/04
Filed: 1966-09-21
Abstract: 1,189,128. Recording and playback; educational apparatus. S. A. JAY. 21 Sept., 1967 [21 Sept., 1966], No. 42253/66. Heading G5R. Each track of a repeatedly-playable multitrack record has an associated playback head, and each of a plurality of students has a receiver, a switch for connecting the receiver to any selected playback head, and a transmitter connected to the receiver so that the student can monitor his own transmission. A further track of the record is available for recording and playback to a student selected by an instructor, who is able to communicate with any student. The record may be an endless loop of magnetic tape, or a reel-to-reel tape of which a selected portion is exposed on the periphery of a hollow turntable containing the two reels.
Patent GB-1011348-A (GB)
Title: Improvements in or relating to nuclear fuel materials
Inventor: JAQUES THOMAS ARTHUR JOHN
IPC: G21C3/62
Filed: 1963-10-28
Abstract: 1,011,348. Nuclear fuel materials. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Oct. 26, 1964 [Oct. 28, 1963], No. 42407/63. Drawing to Specification. Heading G6C. A nuclear fuel particle comprises a hollow centre bounded by a wall of a refractory material in which fissile and/or fertile material is dispersed. A method of making such a particle in which the fuel material is UC 2  including ZrC as a diluent is to first form a pellet of 100 to 200 microns diameter from the mixed carbides and to coat this pellet with pyrolytic carbon by a conventional fluidized bed process, the coating comprising two layers separated by a discontinuity. If, by way of example, the initial layer is of laminar structure, then the outer layer may be of columnar structure. A number of such pellets are incorporated in a matrix of carbon granules by being mixed with powdered carbon and a binder, compacted by applying light pressure and sintered to form a coherent mass. The whole body is then placed in a graphite tube resistance furnace wherein an inert atmosphere is maintained and heated at a uniform rate up to 2400‹ C. whereupon the matrix, but not the pyrolytic carbon coatings, is graphitized. The temperature is then raised to above 3000‹ C. for half a minute, i.e. a temperature above the m.p. of the UC 2  but below that of the matrix. The UC 2  diffuses into the inner coating layer but the discontinuity between the inner and outer layers inhibits much, if not all, further outward diffusion of the UC 2 . The space left by the outward diffusing UC 2  becomes the hollow centre of the resulting particle. It is not necessary to incorporate the coated pellets in a matrix of carbon or graphite and the method described may alternatively be taken as far as the application of the two layers of pyrolytic carbon, whereupon other pellets are placed in a pot of refractory material, preferably carbon or graphite, and heated to above 3000‹ C. as before in a graphite tube resistance furnace. The particles so formed are preferably given a coating of pyrolytic carbon at low temperature by a conventional fluidized bed process and may then be incorporated in a fuel bearing component of any desired form. The invention is applicable to other fuel and refractory materials and, by way of example, pellets of UO 2  may be coated with Al 2 O 3 , BeO or Nb, possibly also further coated with carbon or other refractory materials, and then incorporated in a suitable refractory matrix material either before or after being heated to a temperature above the m.p. of the UO 2 .
Patent GB-1427288-A (GB)
Title: Automatically operated magnetic tape equipment
IPC: G11B15/66
Filed: 1974-09-30
Abstract: 1427288 Feeding record tapes COMPAGNIE INTERNATIONALE POUR L'INFORMATIQUE 30 Sept 1974 [1 Oct 1973] 42412/74 Heading G5R A casing 1 contains a supply reel 2 in a first chamber, a take-up reel 6 in a second chamber, a duct connecting the two chambers for guiding the tape 50 between the two reels, and a resilient element 17 contained in the wall of the duct and engaged by the tape at the entrance to the second chamber so as to damp sudden changes in tape tension, e.g. during automatic threading or rewinding or on accidental jamming of a reel.
Patent GB-1514479-A (GB)
Title: Prosthetic joints
IPC: A61F2/00
Filed: 1974-10-01
Abstract: 1514479 Prosthetic joints CHAS F THACKRAY Ltd and R A ELSON 29 Sept 1975 [1 Oct 1974] 42621/74 Heading A5R A prosthetic joint, especially a knee joint, comprises a tibial member including a metal stem I rotatably mounted in a plastics sleeve 5 fixed in the tibia 3, and a femoral member forming a hinge-type connection with an upper extension 4 of stem 1, whereby relative rotation is permitted between the bones of the joint about the longitudinal axis of the tibia. The sleeve 5 has an integral tapered peg 8, sleeve 5 and peg 8 having annular grooves 9 to assist in keying bone cement 11 thereto. In a modification, the stem is made of plastics and the sleeve of metal. The femoral member may be as described in Specification 1349587.
Patent GB-1005402-A (GB)
Title: Preparation of polyethers
IPC: C08G75/04
Filed: 1963-10-29
Abstract: A process for the preparation of polyethers comprises polycondensing thiodiglycol at a temperature above 150 DEG  C. in the presence of one or more etherifying catalysts, namely phosphorous acid or its acid halides, acid ammonium salts, mono-, di- and tri-esters, amides or ester-amides, or phosphonous acid or its acid halides, esters, amides or ester amides.  Thiodiglycol may be condensed either alone to give a product HO-[-(CH2)2-S-(CH2)2-O-]n-H, where n is greater than 2, or with an alcohol containing more than one hydroxyl group, e.g. ethylene glycol, propanediol-(1 : 2), propanediol - (1 : 3), butanediol - (1 : 4), hexanediol-(1 : 6), di- and tri-ethylene glycol, tri-methylolpropane, glycerol and pentaerythritol. Suitable catalyst concentratins are 0.005 to 10% by weight Water is removed from the product by carrying out the last stage of the reaction in vacuo. The catalyst may be left in the product since it acts as a stabilizer, or may be removed by washing with ammonia or by neutralization followed by separation of the salts.  The polyethers may be used to prepare synthetic resins, particularly by the isocyanate process.  The examples describe (1), (2) and (3) the condensation of thiodiglycol alone, the product of Example (1) having a molecular weight of 2,000; and the condensation of thiodiglycol with (4) 1,6-hexanediol, (5) trimethylol propane, (6), (7) and (8) triethylene glycol.ALSO:A process for the preparation of polyethers comprises polycondensing thiodiglycol at a temperature above 150 DEG C. in the presence of one or more etherifying catalysts, namely phosphorous acid or its acid halides, acid ammonium salts, mono-, di- and tri-esters, amides or esteramides, or phosphonous acid or its acid halides, esters, amides or ester-amides.  Thioglycol may be condensed either alone to give a product HO-[-CH2-S-(CH2)2-O-]n-H, where n is greater than 2 or with an alcohol containing more than one hydroxyl group, e.g. ethylene glycol, trimethylol propane, propanediol-(1 : 2), propanediol-(1 : 3), butanediol-(1 : 4), hexanediol-(1 : 6), di- and tri-ethylene glycol, glycerol, and pentaerythritol.  Suitable catalyst concentrations are 0.005 to 10% by weight.  Water is removed from the product by carrying out the last stage of the reaction in vacuo.  The catalyst may be left in the product since it acts as a stabilizer, or may be removed by washing with ammonia or neutralization followed by separation of the salts. The examples describe (1), (2), (3) the condensation of thiodiglycol alone; and the condensation of thiodiglycol with (4) 1,6-hexanediol, (5) trimethylol propane, and (6), (7), (8) triethylene glycol.
Patent GB-1036277-A (GB)
Title: Insecticidal compositions
IPC: C07F9/12
Filed: 1963-10-30
Abstract: 2-Chloro-6-methyl phenol is reacted with phosphorus oxychloride and subsequently in alkaline solution with methanol to produce tetra - (2 - chloro - 6 - methyl phenyl) - pyrophosphate and 2 - chloro - 6 - methylphenylmetaphosphate. In a similar manner 2,6-dichlorophenol gives a mixture of tetra-(2,6-dichlorophenyl) - pyrophosphate and 2,6 - dichlorophenyl metaphosphate and o-tert.-butylphenol a mixture of tetra-(2-tert.-butylphenyl)-pyrophosphate and a 2-tert.-butylphenyl metaphosphate. 2 - Methyl - 6 - chlorophenol is reacted with phosphorus oxychloride in pyridine and then methanol added to produce methyl di - (2 - chloro - 6 - methylphenyl) - phosphate. If methanol is omitted from the last reaction, di - (2 - chloro - 6 - methylphenyl) - hydrogen phosphate is produced.ALSO:A synergistic insecticidal and nematocidal composition contains (i) an organic phosphorus containing insecticide and (ii) a synergist therefor of the formula:  <FORM:1036277/A5-A6/1> wherein R1 and R2, which may be the same or different, are hydrogen atoms or an equivalent of an alkali metal or an alkaline earth metal or an alkyl or trifluoromethyl radical or an aryl radical, which may be substituted by halogen, alkyl, alkoxy, alkylmercapto, aryloxy, arylmercapto or trifluoromethyl, R3 stands for a hydroxyl group or an alkyl radical, which may be substituted by halogen, hydroxyl or amino, or R3 stands for an alkoxy, alkylmercapto or arylmercapto radical or for an aryloxy radical, which may be substituted by halogen and/or alkyl, hydroxyl, trifluoromethyl or cyano, X is O or S and n is 0-10, with the proviso that if n is zero and X is O, the groups R2X and R3 may together represent O.  Aryl radicals may be phenyl or naphthyl and halogen atoms may be C1, Br or F. Numerous phosphorus containing insecticides are specified.
Patent GB-430968-A (GB)
Abstract: 430,968. Portable electric lamps. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Koehler Manufacturing Co. ; 395, Lincoln Street, Marlboro, Massachusetts, U.S.A.) July 24, 1934, No. 37212. Divided application. [Classes 39 (ii), 75 (ii), and 75 (iv)] A portable electric lamp, particularly applicable for mounting on the cap or being carried in the hand of a miner, comprises an emergency bulb 12 which is of smaller candle-power than the main bulb 10 and which is supported in the lamp casing 2 in the shadow of that portion 27 of a fixture that engages the head of the main bulb and holds it in its operative position with respect to a reflector 13 behind it. The bulb 12 is positioned chiefly behind the reflector but projects slightly through a hole 28 which preferably includes a slot through which the portion 27 can project. The portion 27 comprises a strong curved spring arm with a forked end, while depressions in the two arms of a forked spring 26 engage pins 15 on the base 14, and leaf springs 24, 25 engage end terminals 18, 19 which are connected to two filaments 16, 17 arranged on the axis of the reflector. Alternatively, a bulb may be used having its two filaments at right angles to the axis of the reflector. The bulb 12 is supported by means of a forked or cupped spring arm 30 and a pair of spring contacts 31, 32 adapted to engage respectively with the base and an end terminal of the bulb. The casing 2 carries a switch button connected to a movable arm arranged to engage with either of the contacts 24, 25 of the filaments 16, 17 or with a contact connected to the contact 31 of the bulb 12. Alternatively, the switch may be mounted on the casing of a battery supplying current to the lamp. The reflector 13 is preferably concave with a frosted or matt surface and it is formed with a beaded flange 41 having lugs 43 to extend into depressions in the casing 2 which may be made of metal, vulcanite, or artificial resin. The bezel ring 38 is formed with one or more lugs 46 and, after it has been screwed on to the casing 2, a latch 47 is slid into a lug 45 on the casing and a lead or other soft metal sealing plug 48 is inserted through holes in the lug 45 and the latch 47, so that the latter engages one of the lugs 46 to prevent removal of the bezel ring 38. In a modification, the latch is mounted between two lugs on the casing and enters any one of a series of notches formed in the edge of the bezel ring and is again locked in position by a sealing plug. A spring actuated supporting device 3 may be mounted on the lamp casing 2.
Patent GB-1438349-A (GB)
Title: Conductor assemblies for cables
IPC: H01B7/14
Filed: 1973-09-13
Abstract: 1438349 Conductor assembly POST OFFICE 12 Sept 1974 [13 Sept 1973] 43105/73 Heading H1A A conductor assembly for a cable comprising a stranded steel core surrounded by a copper skin, some, at least of the strands in the outer layer of the core being copper clad. The skin may be welded to the core by pressure alone (cold pressure welding) or by pressure with the addition of heating. The copper skin may be formed from tape which is longitudinally applied around the strands and then seam welded or it may be formed by hydrostatic or hydroflow extrusion processes eliminating the need for the seam weld. The copper skin may be microwave annealed after welding to the strands to increase the conductivity without harming the weld. The conductor has applications in submarine telephone cables.
Patent GB-1418109-A (GB)
Title: Handpiece assembly for supporting a rotatable tool
IPC: A61C1/18
Filed: 1973-09-13
Abstract: 1418109 Drill attachments STRYKER CORP 13 Sept 1973 [15 Sept 1972] 43117/73 Heading B3C [Also in Division A5] A dental drill has a drive shaft mounted by bearings 26, 27 in a housing 11, the forward end 53 of the shaft being cylindrical and adapted to receive the shank 54 of a tool 56, the shank being retained by its contoured inner end, Fig. 7, in engagement with a key 49 and locked by the contoured forward end of a cylindrical plug 38 slidable in drive shaft portion 36, the plug being biased to its forward locking position by a spring 44 and moved rearwardly to its release position by sliding a ring 67 on the outside surface of the housing which, via pins 68, causes the slotted end 72 of a sleeve 69 to engage teeth 43 on a locking sleeve 42 to which the plug is attached by pin 39. After rearward movement of plug 38 the shank can be released from key 49 by rotation. A spring 73 biases ring 67 to its non-release position. Sliding movement of sleeve 42 with the plug by pin 39 is allowed by providing slots 41 in shaft 42. Pins 68 move slots 71 of housing part 16. The key is retained by ring 52.
Patent GB-1522606-A (GB)
Title: Pouring device
IPC: B65D47/06
Filed: 1974-10-04
Abstract: 1522606 Pouring devices WADDINGTON & DUVAL (HOLDINGS) Ltd 23 Sept 1975 [4 Oct 1974] 43189/74 Heading B8T A pouring device comprises a central liquid outlet 2 and an air inlet or inlets 4 provided annularly around the outlet and having an annular pouring lip 16, a bung 14 and an indented mandrel receiving surface (45, Fig. 1, not shown) between the lip and the air inlet or inlets. Annulus 30 may be broken away to release bung 14.
Patent GB-1430737-A (GB)
Title: Waistbands for pants
IPC: A41F9/02
Filed: 1974-10-07
Abstract: 1430737 Garment waistband DAY'S INC 7 Oct 1974 43311/74 Heading A3V The waistband comprises a stiff band 22 and cover material 21 attached to the top of trousers 32 as shown in Figure 15. The waistband is made up and attached to the garment as follows. The stiff banding 22 is laid on the cover maternal 21 and attached by stitching 20, Figure 2. The cover is then folded so that the band overlies the portion 27, Figure 3, where it is temporarily secured by stitching 28. Cover portion 26 is folded back, see Figures 3, 5; its edge may be oversewn at 24. Portion 27 is laid on the garment material 32 so that the edges are co-extensive, and the two seamed by stitching 33, see Figure 7. Material 32 and portion 26 are folded back about stitch lines 33, 20 respectively, and stitched 40, Figure 15. Stitches 28 are removed.
Patent GB-1360219-A (GB)
Title: 4h-benzo-4,5 - cyclohepta-1,2 - b-thiophen-9-ones and process for their manufacture
IPC: C07D333/24
Filed: 1971-09-21
Abstract: 1360219 4H - benzo - [4,5] - cyclohepta- [1,2 - b] thiophen - 9 - ones SANDOZ Ltd 21 Sept 1971 [24 Sept 1970 4 Feb 1971] 43924/71 Heading C2C Compounds of Formula (I) or their acid addition salts where R 1  is hydrogen, chlorine, bromine or C 1  to C 4  alkoxy, R 2  is hydrogen R 3  and R 4  are each hydrogen or methyl and R 5  and R 6  are C 1  to C 4  alkyl or R 5  with R 2  is an ethylene chain or R 5  with R 3  is an ethylene or trimethylene chain or R 5  together with R 4  is a trimethylene or tetramethylene chain are prepared by treating a compound of Formula (II) where X is chlorine or bromine in the 9 or 10 position, with a strong aqueous, non-oxidizing acid or by similarly treating a compound of Formula (III) to form either a compound of Formula (II) as an intermediate or to give compounds of Formula (I) directly. Compounds of Formula (Ib) and (IIa) in which R<SP>1</SP> 2  to R<SP>1</SP> 6  are R 2  to R 6  as defined above with the proviso that if R 2  with R 5  is an ethylene chain then either R 3  or R 4  is methyl and compounds of Formula (III) are novel. Compounds of Formula (I) exhibit histaminolytic properties and form with a suitable carrier pharmaceutical preparations which may be administered orally or parenterally. Compounds of Formula (Ib) are local anaesthetics which form a pharmaceutical preparation with a carrier or diluent for topical administration.
Patent GB-1531263-A (GB)
Title: Optoelectronic device
IPC: H03K17/785
Filed: 1975-10-24
Abstract: 1531263 Optoelectronic device for optical repeaters XEROX CORP 24 Oct 1975 43925/75 Heading G1A [Also in Division H1] An optoelectronic device comprises lightsensitive and light-emitting semi-conductor junction diodes 8, 9 and 9, 10 respectively the light emitting diode being arranged to emit light 16 in response to the electric current produced by the lightsensitive diode and disposed so that part of the emitted light 15 is incident upon the light-sensitive diode 8, 9, thus providing positive feedback, a threshold of operation also being provided by e.g. a resistor (7), Fig. 1 (not shown) shunted across the L.E.D. The device may comprise an avalanche photodiode (17), Fig. 3 (not shown) and a semiconductor lasing region (18) formed side by side on a common substrate 19. When a number of devices are used as repeaters along an optical fibre cable each light-emitting diode may emit light of a longer wavelength than the preceding one and each light-sensitive diode made sensitive only to wavelengths ranging from that received from the previous repeater up to that emitted by its associated light-emitting diode. This prevents optical feedback between the output of one repeater and the input of the previous one.
Patent GB-1483186-A (GB)
Title: Aqueous wetting compositions
IPC: C09K23/00
Filed: 1973-09-21
Abstract: 1483186 Biocide/wetting agent compositions IMPERIAL CHEMICAL INDUSTRIES Ltd 11 Sept 1974 [21 Sept 1973] 44379/73 Heading A5E [Also in Division C5] Aqueous wetting compositions contain one or more compounds of formula II:- wherein A is a divalent hydrocarbon radical, and X is an oxygen atom or an NH group, together with one or more condensates of one to four moles of ethylene oxide with a C 7 -C 15  aliphatic alcohol, and one or more cationic surface active agents. The compounds of formula II .may be caprolactone, γ-butyrolactone, caprolactam or methyl caprolactam. The compositions may contain biocidally-active materials such as I, 1'-dimethyl-4, 4'-bipyridylium chloride. The cationic surface active agent may be an alkyltrimethylammonium halide or alkyl pyridinium halide containing a C 8 -C 18  alkyl group.
Patent GB-1482653-A (GB)
Title: Curable fluoroelastomer compositions
IPC: C08L19/00
Filed: 1974-10-15
Abstract: Vulcanisation of an elastomeric copolymer for from 30 seconds to 15 hours under a pressure of between 7 and 210 kg/cm<2> and at a temperature between 95 and 230 DEG C with subsequent curing for up to 50 hours at between 150 and 315 DEG C gives a rigid, shape-stable vulcanisate. The copolymer comprises vinylidene fluoride and a certain terminally ethylenically unsaturated fluorinated comonomer, defined precisely in Claim 1. From 0.1 to 5 parts by weight of quaternary ammonium or phosphonium compounds, from 0.2 to 5 parts by weight of aromatic hydroxyl or amino compounds, from 3 to 40 parts by weight of at least one, usually inorganic, basic acid acceptor and in addition from 0.2 to 5 parts by weight of a triorganophosphorus oxide or diorganosulphur oxide, based on 100 parts by weight of the copolymer, are mixed therewith. This process facilitates shorter pressure curing, a longer shelf life and good processing properties without impairment of the physical properties of the vulcanisate.
Patent GB-1344400-A (GB)
Title: Cinematographic projector
IPC: G03B21/16
Filed: 1972-09-27
Abstract: 1344400 Cinematography BOLEX INTERNATIONAL SA 27 Sept 1972 [27 Sept 1971] 44687/72 Heading G2E In a cine projector a device is provided which causes the mean intensity of light and heat on each film frame, when projected, to be greater at the edge than the centre of the frame. As shown in Fig. 1 the device may be a star-shaped opaque screen 5 which is located between lamp 1 and shutter 3 so that direct illumination from the lamp 1 of the film F is impossible. Alternatively in Fig. 1 a rotary shutter with specially shaped sector openings may be used, the curved side 14 cutting off the centre of the beam 15 for longer than its periphery. In another embodiment a folded light path between the lamp and film uses a mirror with a central portion of lower reflectivity on the mirror may be apertured at its centre and cooling air blown through the aperture on to the film.