baber/WOPTO huggingface dataset:
Patent GB-1055059-A (GB)
Title: Improvements in crystal growing
Inventor: BRICE JOHN CHADWICK
IPC: C30B15/14
Filed: 1963-11-27
Abstract: A crystal is pulled from melt in an inner crucible surrounded by an outer crucible containing molten susceptor material heated by induction means surrounding the outer crucible.  The melt being pulled may be of germanium, silicon, gallium, arsenic, indium arsenide, or indium phosphide.  The susceptor material may be of the same material or gallium, indium, mercury, or gallium-indium.  The crucible material may be silica, boron nitride, aluminium nitride, or aluminium.  The susceptor material may be sealed in the outer crucible.  The cross-sectional area between the inner and outer crucibles may increase with depth. The outer wall may be vertical and the inner wall may taper inwards at an agle of 1/2 degrees to the vertical. According to Fig. 1 (not shown), a crystal is pulled from melt 6 in a double walled crucible 3, susceptor material contained between the inner and outer walls of the crucible being heated by an induction coil 4.  According to Fig. 2 (not shown), an inner crucible 11 is vertically slidable in an outer crucible 12 to enable lowering on melting solid material in the outer crucible.
Patent GB-1427824-A (GB)
Title: Manufacture of foam glass
IPC: C04B38/02
Filed: 1973-10-08
Abstract: 1427824 Making foam glass SAINTGOBAIN INDUSTRIES 8 Oct 1973 [9 Oct 1972] 46934/73 Heading C1M Foam glass is made by heating a base glass containing a gas-producing agent, the agent comprising a mixture of silicon carbide and a tin oxide. Preferably the agent contains not more than 1 molecule of SnO 2  per molecule of silicon carbide. Preferably there is not more than 3% by weight of the agent in the glass, based on the weight of base glass. Not more than 3% by weight, based on the total of glass and agent, of sodium carbonate may also be present. The base glass and agent are preferably heated to above 950‹ C. (preferably to 950-1100‹ C., so that the glass has a viscosity of 10<SP>6</SP>-10<SP>7</SP> poises). The glass may be a crystallizable glass (e.g. a crystallizable glass as disclosed in Specification 1,307,303) which is crystallized directly after foaming by reducing the temperature directly to the crystallization temperature. The glass may be foamed in a stainless-steel mould formed of ribbed plates, the mould being charged with a briquette formed by mixing powdered glass and powdered gas-producing mixture and dry pressing at, e.g. 50 bars pressure.
Patent GB-1282033-A (GB)
Title: A catadioptric telephoto objective lens system
IPC: G02B17/08
Filed: 1969-09-24
Abstract: 1282033 Reflecting objectives NIPPON KOGAKU K K 24 Sept 1969 [24 Sept 1968] 46999/69 Heading G2J A catadioptric telephoto objective lens system comprises from the object face, a positive meniscus lens L 1  convex face towards the object, a main reflecting mirror M 1  having a reflecting surface R 4  and a refracting face R 3  concave to the object, a second mirror M 2 , adjacent lens L 1 , having a reflecting surface R 6  and refracting face R 5  convex to the path of travel of light, and a negative lens L 2  cemented to a central non- reflecting portion of the main mirror M 1  through a positive lens L 3  placed therebetween and having a concave surface directed towards the object, the composite length of the system being below 1/3À5 of its focal length. Optical data for the lenses and mirrors are given.
Patent GB-1357835-A (GB)
Title: Vehicle wheel-suspension arrangements partucularly for motor vehicles
IPC: B60G3/20
Filed: 1972-10-12
Abstract: 1357835 Independent suspension DAIMLERBENZ AG 12 Oct 1972 [23 Oct 1971] 47152/72 Heading B7D In a vehicle suspension having each of two oppositely disposed wheels suspended by means of a lower transverse arm 26 and a further guide member such as an upper transverse arm 28 or a telescopic support, the lower transverse arm 26 is connected to a transverse bearer member 11 resiliently mounted on the vehicle superstructure, the further guide member is mounted directly on the superstructure, and a suspension spring 38 is interposed between a plate 39 on the arm 26 and an abutment 40 on the superstructure. The bearer member 11 comprises a transverse limb 14 and side limbs 15 braced by struts 16. Arms 17 on the transverse limb are connected to superstructure side members 10 by vertical rubber mountings 12 and the side limbs 15 are connected to the member by horizontal rubber mountings 13. Each transverse arm 26 comprises a generally transverse limb 30 and an oblique limb 31 braced by a strut 22 and is connected to the bearer member 11 through rubber bushes 33, 35.
Patent GB-1359536-A (GB)
Title: Pneumatic tyre pressure indicating device
IPC: B60C23/00
Filed: 1971-10-12
Abstract: 1359536 Tyre pressure indicating devices B IVENBAUM 12 Oct 1971 [23 Oct 1970] 47374/71 Heading B7C A pneumatic tyre pressure indicating device comprises a tubular housing 18 adapted to be mounted on a tyre inflation valve stem 10; the housing containing a radio transmitter 22, a battery 20 for the transmitter, and a slidable piston 24; means being provided to enable the tyre pressure to enter the housing and load one side 36 of the piston, and the piston being loaded on its other side by air pressure in a sealed chamber 44 in the housing such that, in use, if the tyre pressure falls below or rises above the pressure in the chamber 44 the piston moves, upon such movement the transmitter being caused to transmit, e.g. from an antenna 84, a signal for reception by an alarm device, e.g., in the cab of the vehicle carrying the tyre. In the embodiment illustrated in Fig. 2, a T-shaped tube 26 depresses the valve core 14 in the stem 10 so that air from the tyre enters into the housing through the tube 26 and a port 34. The piston 24 carries two electrical contact discs 46, 49 which are both connected to one terminal of the transmitter 22 through wires 48, 50, a housing part 16, valve parts 10, 12, 14, and the battery 20, and the other terminal of the transmitter is connected to electrical contacts 52, 53 so that, in use, if the tyre pressure falls the contacts 46, 52 engage and close the transmitter circuit, and if the tyre pressure rises the contacts 49 and 53 engage and close the circuit. A plug 40 screw-threaded into the housing can be adjusted to alter the pressure in the chamber 44 so that it can be ensured that on fitting the device to a tyre at its normal inflation pressure the piston 24 lies midway between the contacts 52, 53. Colour coding may be provided on the screw-threading 54 receiving the plug 40 to indicate the pressures in the chamber 44 resulting from various adjustments of the plug. A circuit for the transmitter 22 is described and illustrated in the Specification (Fig. 3, not shown).
Patent GB-1510048-A (GB)
Title: X-ray conversion screens
IPC: G21K4/00
Filed: 1976-11-15
Abstract: 1510048 X-ray conversion screen TOKYO SHIBAURA ELECTRIC CO Ltd 15 Nov 1976 [14 Nov 1975] 47443/76 Heading C4S An X-ray conversion screen comprising a substrate having thereon at least one fluorescent layer containing at least one fluorescent substance which comprises a rare earth oxyhalide of formula: wherein M is La or Gd, X is Br or Cl, L is Y or Lu, v is 0À00005 to 0À05, w is not more than 0À005 and z is 0À000001 to 0À05 mole/mole of the oxyhalide. A number of specific fluorescent substances are disclosed. The substances may be used on their own or mixed with CaWO 4 , BaSO 4 :Eu, Ba 3 (PO 4 ) 2 : Eu or Me 2 O 2 S: Tb where Me = Y, La or Gd. The substance may be made by dissolving oxides of M, Tb, Yb and L in nitric acid, precipitating the metals as oxalates, firing to convert to mixed oxides, blending with NH 4 Br, firing to form an oxybromide, recrystallizing by firing with KBr and washing to remove KBr. The substrate may be paper, plastics film, metal or glass and a protective coating of polyethylene terephthalate or cellulose acetate may be put over the fluorescent layer. The phosphor grains may be dispersed in cellulose nitrate as a binder optionally with the larger grains in the layer nearer the substrate. An X-ray cassette including a photographic film is disclosed (Fig. 3, not shown). The fluorescent substance is said to exhibit short afterglow.
Patent GB-1281915-A (GB)
Title: Method for purifying phosphors
Inventor: LATULIP ARTHUR
IPC: C09K11/77
Filed: 1969-09-26
Abstract: 1281915 Luminescent materials GTE SYLVANIA Inc 26 Sept 1969 47488/69 Heading C4S A method for removing Cu contamination from the surface of phosphor particles comprises heating a mixture containing ZnS and the Cu contaminated particles, the phosphor particles being the oxide and/or vanadate and/or oxysulphide of ythrium and/or gadolinium activated by a rare earth metal (e.g. Eu alone or with Bi), the heating being at a temperature sufficient to cause the Cu to migrate into the ZnS crystal lattice, and separating the phosphor from the ZnS and Cu combination e.g. by flotation or separately dissolving in a solvent. The heating may be in the range 300‹ to 700‹ C. (e.g. 500‹ C.) and the ZnS 0À1 to 10% by wt. of the total mixture. Reference is made to the coactivation of the blue emitting ZnS : Ag phosphor dot in a colour TV tube from Cu contaminated green and/or red emitting phosphors. In the example, Eu activated vanadate and/or oxide phosphor having 10 p.p.m. Cu contamination and 5 wt. per cent unactivated ZnS is fired at 525‹ C., and then slurried in 10% solution of a hydrochloric or nitric acid for separation .
Patent GB-1180358-A (GB)
Title: Improvements in or relating to Compensating Bellows for Expansion Joints and a process for their manufacture
Inventor: NEUMANN JOHANNES
IPC: B32B27/00
Filed: 1968-10-04
Abstract: 1,180,358. Pipe joints. KEMPCHEN & CO. G.m.b.H. 8 Oct., 1968 [24 June, 1968], No. 47555/68. Headings F2G and F2P. Compensating bellows for expansion joints between lengths of pipe consists of corrugated woven or knitted asbestos fabric carrying a bonded layer of P.T.F.E. which is formed by placing a rolled-out sheet of unsintered P.T.F.E. on the asbestos fabric and applying heat and pressure to sinter the P.T.F.E. and at the same time bond it to the asbestos fabric. The fabric preferably has a weave pattern known as satin weave, which is first coated with a P.T.F.E. dispersion before applying and sintering the P.T.F.E. sheet. Finely powdered fillers and/or pigments may be incorporated with the unsintered raw material. The fabric may be either in the form of a continuous hose prior to applying the P.T.F.E. layer, or the latter may be applied to a flat strip of fabric which is afterwards formed into a hose.
Patent GB-1036359-A (GB)
Title: Method for converting cellulose ethers into filamentary form
IPC: D01F2/30
Filed: 1964-11-25
Abstract: Cellulose ethers which are in the form of water-swollen flakes are converted into a filamentary or fibrous form by extruding them while in a water-swollen state through holes whose diameter does not exceed 2 mm. into air and the filaments or fibres thereby formed are then dried.  The dried filaments or fibres thus formed may be cut into short lengths to form pellets.  The cellulose ethers to be extruded may contain 20 to 70% of water.  The invention is applicable to any cellulose ether which is soluble in an organic solvent such as methanol or acetone, or in water or aqueous solutions of sodium hydroxide.  The ether may be methyl, ethyl, hydroxyethyl carboxymethyl or cyanoethyl cellulose.  The cellulose ethers are made in a conventional manner and may be neutralized, washed and otherwise purified before extrusion.  The extrusion may be effected at room temperature or at temperatures up to 80 DEG  C. Cellulose ethers which have been converted into filamentary or pellet form according to the invention dissolve more rapidly in their appropriate aqueous or organic solvents than do cellulose ethers in the form of powder produced by pulverizing flakes of the cellulose ether.
Patent GB-1206450-A (GB)
Title: Process for the production of foamed slabs and laminates
Inventor: HINDS LESLEY
IPC: B32B5/20
Filed: 1967-10-23
Abstract: 1,206,450. Foamed plastics slabs; laminates. IMPERIAL CHEMICAL INDUSTRIES Ltd. 17 Oct., 1968 [23 Oct., 1967], No. 48094/67. Headings B5A and B5N. [Also in Division B2] Foamed synthetic plastics slabs or laminates are produced by depositing a foamable composition 3 from adjustable feed means 4 on to a carrier web 1, a second web 2 being applied on to the deposited layer, passing the resulting sandwich through a metering slit 5, 6, heating it, e.g., in oven 11 to foam and set the composition, adjustment of the feed means 4 being controlled by means 7 sensing the lateral width of the sandwich after passing through the metering slit and adjusting the feed means to maintain the lateral width at a desired value. One or both webs may be stripped from the foam after setting. The composition may be thermosetting, e.g. polyurethanes, condensates of formaldehyde with amine-containing compounds such as urea, thiourea, guanidine, or melamine or phenol formaldehyde. Both webs are preferably flexible and may be thermoplastic, e.g. polyethylene, polypropylene, polyethyleneterephthalate, polystyrene, vinyl chloride polymers or paper, plastics-coated paper or metal foils, e.g. aluminium foil. If they are not removed, producing a laminate, the webs may be impregnated or coated with an adhesion-improving material, e.g. an acid hardenable resin if an acid hardenable foamable composition is used. The metering slit may be the gap between a pair of rollers, or a slot of variable width wider at the edges than at its centre. The width may be sensed by passing one or both edges of the sandwich between two electrodes and determining the capacitance therebetween, or by passing one or both edges above or below two electrodes, and measuring the capacitance therebetween when the sandwich lies in the electric field set up by supplying alternating current to these electrodes. To facilitate removal of a web from the foam if desired, they may be coated with a release agent, e.g. polytetrafluoroethylene.
Patent GB-1478866-A (GB)
Title: Method of providing a desired dc magnetic bias field in magnetic bubble chip housings
IPC: G11C19/08
Filed: 1974-11-07
Abstract: 1478866 Permanent magnets HEWLETTPACKARD CO 7 Nov 1974 [14 Nov 1973] 48230/74 Heading H1P [Also in Division H3] The bias field for a magnetic bubble device is produced by subjecting magnetic elements 15 in a housing 11 to a first magnetic field, sufficient to produce a field between the elements which is greater than that desired, then to a second magnetic field of opposite direction to reduce the field to that desired whilst maintaining the housing magnetically saturated. The housing is of annealed alloy or ferrite and the elements 15 of barium ferrite, rare earth cobalts or loaded plastics in which case the final field is a linear function of the second applied magnetic field. The housing may contain propagating field coils and have access slots for electrical connections and field measuring.
Patent GB-1353497-A (GB)
Title: Converted with a detachable floor
IPC: C21C5/42
Filed: 1971-10-18
Abstract: 1353497 Metallurgical converter bottoms VEREINIGTE OSTERREICHISCHE EISENUND STAHLWERKE AG 18 Oct 1971 [20 Oct 1970] 48271/71 Heading F4B In a converter K having a detachable bottom B held by radial wedges 7 and rocker supports 6 against a supporting ring 2 of the shell 1, each rocker support 6 is slewable into or out of its supporting position about a pin 16, the turning axis 17 extending through the centre of gravity of the support. Each pin 16 freely engages a socket 14 and the ends of the rocker 6 engage a ledge 12 on the bottom plate 4 and a block 13 on the supporting ring 2. When the bottom B is held by a lifting device, the wedges 7 may be knocked out and the rocker supports 6 turned through 90 degrees to release said bottom.
Patent GB-984500-A (GB)
Title: A method for the preparation of cement
IPC: C04B7/38
Filed: 1963-12-11
Abstract: Cement is prepared from a cement raw mixture comprising lime and limestone in a ratio by weight of CaO : CaCO3 of above 45.4 : 54.6 by forming into compressed pieces and calcining, e.g. above 1400 DEG  C. The other raw materials specified are alumina, silica and copper slag from a copper refinery.  A temporary binder may also be present, e.g. alkaline earth metal hydroxides, mineral oils, vegetable oils such as soyabean oil, spent liquors from pulp-making and natural and synthetic pastes.
Patent GB-1207387-A (GB)
Title: Improvements in and relating to remoistenable pregummed products
Inventor: BEERSMA PIETER JOHANNES ADRIAN
IPC: C09J7/32
Filed: 1967-10-31
Abstract: 1,207,387. Solvent-sensitive adhesive coatings. SCHOLTEN RESEARCH N.V. 30 Oct., 1968 [31 Oct., 1967], No. 49312/67. Heading B2E. [Also in Division C3] A remoistenable pregummed product comprises a substrate having an adhesive layer consisting of a high molecular weight polymeric binding agent and a remoistenable amylaceous adhesive, the adhesive being a dry, cold water swelling, cross-linked, granular starch ester or starch ether containing hydrophilic substituents in discrete, non-agglomerated form. The hydrophilic substituents may be phosphate, sulphate, carbamate or carboxyacyl ester groups or carboxyalkyl, sulphoalkyl, hydroxyalkyl, aminoalkyl or substituted monoalkyl ether groups. The groups may be introduced into the starch molecule using phosphorus-containing acids, water soluble salts of phosphorus-containing acids, sulphonic acid, sulphur trioxide/tertiary amine complexes, chlorosulphonic acid, urea, anhydrides of dibasic carboxylic acids, sodium halo acetates, acrylic acid esters, haloalkyl sulphonates, sulcones, alkylene oxides, alkylene halohydrines, ethyleimine, substituted aminoalkyl halides and substituted amino alkyl epoxides. The starch molecules may be cross-linked using such agents as phosphorus oxychloride, water-soluble trimetaphosphate salts, diepoxides, epihalohydrins, aldehydes, dialdehydes, dimethylolurea, dimethylol-ethylene urea, methanol melamines and 1, 3, 5-trichlorotriazine. The substrate may be coated with a layer of the polymeric binding agent, dissolved or molten, and dusting the dry starch ester or ether over the layer while it is still in a tacky condition or the starch ester or ether may be suspended in a solution of the polymeric binding agent and the solution applied to the substrate. Further, the substrate may be coated with a powdered mixture of the binding agent and the starch ester or ether, rendering the binding agent sufficiently tacky by heating the mixture or treating the same with the vapour of a solvent for the binding agent and then cooling and drying the product. The substrate may be paper, such as wallpaper, or paper board.
Patent GB-1371058-A (GB)
Title: Method of curing tyres especially large sized tyres
IPC: B29D30/06
Filed: 1971-10-26
Abstract: 1371058 Moulding tyres BRIDGESTONE TIRE KK and KOBE STEEL Ltd 26 Oct 1971 [26 Oct 1970 (2)] 49592/71 Heading B5A In a method of curing a tyre 1 contained between mould halves 3, 4 on a stand 5 and below a plunger 17-21 driven by a crank gear 26, 27, the latter is driven downwardly to a first position at a predetermined position in front of its lower dead centre, the plunger is then adjusted independently of the crank gear to bring it into contact with the mould half 3 and the crank gear is again driven to bring it to its lower dead centre and thereby effect mould closure, whereupon the mould is subjected to a steam atmosphere. The plunger is attached to the upper part 15 of a housing which, in the mould closed position, seals against a housing part 14; the sealed housing receives a steam supply. The crank gear comprises two crank wheels 27 and two crank arms 26 driven by a motor 28, the power supply to which is cut off by a limit switch 29 at the predetermined position. A motor 24 is then energized to rotate, via a pinion 23, a tubular plunger element 19 threaded to elements 18, 21 causing the element 21 to contact the mould half 3 whereupon the motor 24 is stopped and the motor 28 re-energized to bring the crank gear to its lower dead centre. Mould clamping pressure may be adjusted by varying the position of switch 29 or by providing alternative switches. Apparatus for positioning the mould centrally of the stand 5 comprises a number of units, each comprising a clamp piece reciprocable radially of the mould by, a piston and cylinder, the clamp piece being driven radially outwardly from the centre of the stand to engage the inner peripheral edge of the mould half 4.
Patent GB-1369343-A (GB)
Title: Machine and method for cleaning shell covered marine life
IPC: A22C29/02
Filed: 1972-10-27
Abstract: 1369343 Cleaning shell fish MARINE CONSTRUCTION & DESIGN CO 27 Oct 1972 [3 Nov 1971] 49740/72 Heading A2U Marine creatures such as shrimps are cleaned, i.e. shells and foreign matter are removed, by apparatus comprising a rotary roll forming a nip with a cyclically movable plate. In the embodiment described a number of plates are provided each cooperating with a pair of horizontally disposed rolls covered with polyurethane material rotating in opposite directions such that the plates cooperate with downwardly running parts of the rolls. Shrimps are supplied at 11 to the upper surfaces of the rolls 12, 13, 14, 15, &c. which are driven by a belt and gearing, and the plates 16, 17, &c., situated betwen the pairs 12 and 13, 14 and 15 &c. of the rolls are secured to a frame 18 which is reciprocated vertically in guides 19, 20. Belts 22, 23 &c. overlying the upper edges of the plates convey the shrimps away from the supply station 11. The faces 16a, 16b of the plates may be convex as in Fig. 2, or partly convex and partly concave, or planar and parallel to each other, and the ends of the plates have correspondingly shaped cam formations coacting with rollers 51, 58 &c. at the ends of the rolls so that the latter are moved laterally against spring loading during reciprocation of the plates to maintain a constant spacing, which is adjustable, at the nips between the rolls and the plates. The removed pieces of shell pass downwardly through the nips and the cleaned shrimp meat is carried by the belts 22, 23 &c., until removed by fixed deflectors 65, 66 &c. Any uncleaned shrimps on the belts tend to be deflected laterally by water sprays 30, 31 for further treatment between the nips. Sprays 32, 33 clean the rolls.
Patent GB-1067695-A (GB)
Title: 2-alkyl-4-alkylamino-6-alkoxy-s-triazines
Inventor: TSUJIKAWA TERUAKI
IPC: C07D251/16
Filed: 1964-05-06
Abstract: The invention comprises compounds of the general Formula (I) <FORM:1067695/C2/1> (wherein R1 and R3 each represents a C1- 6 alkyl radical and R2 represents a C1- 4 alkyl radical) their acid addition salts and pharmaceutical preparations containing the bases and salts together with an excipient. Compounds (I) and their salts are respiratory stimulants, and are prepared by the process of Specification 1,067,694.
Patent GB-1106758-A (GB)
Title: A two part fastening device comprising a nut or bolt captive in a sleeve
Inventor: CAMENISCH GIAN CARL
IPC: F16B37/06
Filed: 1965-11-24
Abstract: 1,106,758. Screwed fastening. A. V. RAYMOND, [trading as A. RAYMOND DRUCK. KNOPFUND METALLWARENFABRIK]. 24 Nov., 1965 [24 Nov., 1964], No. 49959/65. Heading F2H. A two part fastening device for securing together plates 11 and 13, comprises a synthetic plastics sleeve 3 having a flange at one end, and a bore which is cylindrical at the flanged end but tapered outwardly towards the other end, where it is tapered to a lesser degree, or cylindrical, and a nut or bolt head 16 trapped in the bore. In use the sleeve is passed through an aperture in the plate 11, and a mating bolt through the aperture in the plate 13 to clamp the plates together, the member 16 expanding the slave as tightening occurs. - The bore may have circumferential ribs at each end. The external surface of the nut or bolt head may be knurled or similarly roughened.