baber/WOPTO huggingface dataset:
Patent GB-619589-A (GB)
Title: Improvements in or relating to the production of iron castings
IPC: C21C1/08
Filed: 1946-12-13
Abstract: In a process for refining cast iron, a tubular container of copper or aluminium filled with a mixture comprising not less than 15 per cent of one or more of the elements magnesium, aluminium and titanium with 10-50 per cent of silicon and the remainder iron is introduced into the molten iron before it enters the mould.  A sheet copper tube containing 10 per cent Mg, 20 per cent Al, 10 per cent Ti, 30 per cent Si and the remainder iron may be placed in the ladle, on the spout of the cupola or in the stream of metal being tapped.  The iron is preferably alloyed with one of the other metals, e.g. ferro-silicon or ferro-titanium.  The amount of reagent in each tube may be 1/2 -oz. and from 1 to 6 1/2 -oz. tubes may be added per 100 lbs. of metal.
Patent GB-1498346-A (GB)
Title: Process for preparing polymer particles
IPC: C08F2/18
Filed: 1976-09-07
Abstract: 1498346 Composite polymer particles MITSUBISHI PETROCHEMICAL CO Ltd and YUKA BADISCHE CO Ltd 7 Sept 1976 [8 Sept 1975] 36983/76 Heading C3P Composite propylene polymer particles having homogeneously dispersed therein vinyl or vinylidene polymer particles of size 0À1 to 2 microns are prepared by (a) forming an aqueous suspension comprising 100 parts of propylene polymer particles, 5-200 parts of vinyl or vinylidene monomer and 0À01-1 part by 100 parts of monomer of a radical polymerization initiator having a 10-hour half-life at 85- 130 C., (b) heating the suspension below the decomposition temperature of the initiator to impregnate the polymer particles with the monomer until less than 20% of the monomer remains free in the liquid phase and (c) raising the temperature of the suspension to complete polymerization of the monomer. Preferred propylene polymers are polypropylene and propylene/olefin copolymers. Preferred monomers are styrenes and mixtures thereof with minor proportions of methyl methacrylate, acrylonitrile, vinyl chloride or maleic anhydride. Examples describe the polymerization of styrene, styrene/acrylonitrile mixtures or methyl methacrylate in particles of polypropylene or crystalline random or block propylene/ethylene copolymers.
Patent GB-786834-A (GB)
Title: Saw blade for cutting stone
IPC: B28D1/12
Filed: 1955-12-28
Abstract: 786,834. Stone cutting saw blades. BRIAR HILL STONE CO. Dec. 28, 1955 [Oct. 6, 1955], No. 37091/55. Class 124. An elongated saw blade 10 for cutting stone has along one longitudinal edge similar groups of differently spaced teeth 13. The teeth in each group may be located at progressively increasing distances apart from the forward end of the group to the rear end thereof, and the groups may be spaced apart a distance greater than the maximum spacing of the teeth in the groups. To facilitate removal of cuttings, groups of teeth may be located at progressively lower positions from rear to frcnt, Fig. 3. Each inserted tooth may be formed of a section of round rod or bar with the lower end 16 bevelled or chamfered and cut out to receive a hard facing 15. Slots 18 are formed in the edge to fit rounded inserts. Half-round grooves 20 and 21 are cut in opposed faces for receiving roll pins 22 for locking the teeth in the blade. The roll pins are preferably of hollow, cylindrical, split ring, formation ; the ends 23 may be tapered to facilitate the insertion thereof. Specification 774,350 and U.S.A. Specification 2,720,199 are referred to.
Patent GB-1384109-A (GB)
Title: Forming magnetic films on substrates
IPC: H01F41/20
Filed: 1972-08-09
Abstract: 1384109 Magnetic iron oxide films INTERNATIONAL BUSINESS MACHINES CORP 9 Aug 1972 [15 Sept 1971] 37127/72 Heading C1A A film of magnetic iron oxide is prepared by vapour depositing iron on to a substrate at a rate of from 2 to 50Š per second in an oxygen atmosphere at a pressure between 10<SP>-6</SP> and 10<SP>-4</SP> Torr. whereby as the iron is deposited on the substrate it reacts with the oxygen to form a film of magnetic iron oxide on the substrate. The substrate may be aluminium at a temperature of 20‹ to 220‹ C. and the rate of vapour deposition and oxygen atmosphere pressure may be selected to maximize the abrasion resistance of the film. The deposited film may be annealed at above 150‹ C. and the coated substrate used in the manufacture of magnetic storage discs.
Patent GB-1134573-A (GB)
Title: Improvements in and relating to dispensing containers
IPC: A47K5/12
Filed: 1967-08-14
Abstract: 1,134,573. Syringes. J. POLLAK. Aug. 14, 1967, No. 37187/67. Heading F1R. A dispensing container comprises a container body 2, Fig. 1, for the material to be dispensed, a piston 6 biased upwardly by a spring 10 and a cap 8 incorporating a discharge valve and discharge spout 12. The piston 6 comprises a resilient cup 22, Fig. 4, supported at its edges by a rigid member 14, so that the pressure of the container contents on the middle of cup 22 flexes it inwardly and causes its peripheral flange 24 to be forced outwardly into sealing contact with the container wall, the flange being tapered and having sealing edges 24<SP>1</SP> and 24<SP>11</SP>, as shown. Rigid member 14 has a partition 18 with apertures 31, and a depending stem 32 with pins 34 which engage beneath an aperture 38 in the container base 4, Fig. 1, to lock the piston in its lowermost position for filling. A notch 41 in stem 32 facilitates tuning of the piston to release pins 34 from aperture 38. Cap 8 is of resilient material and has a discharge passage 44, 46 with an inlet in the form of a slit 48 which is normally closed by the resilience of the material, and is opened by depression of the top of the cap, a C-shaped slot 42 being provided to facilitate depression of the cap centre. The cap spout 12 has a captive cover 49. The container base may have an external channel for collecting condensation, the channel communicating through drain holes with the container interior, Fig. 6 (not shown).
Patent GB-1042593-A (GB)
Title: Improvements in hydro-suspension units for vehicles
Inventor: POWELL GEORGE BERTRAM
IPC: B60G17/044
Filed: 1962-10-02
Abstract: 1,042,593. Self-levelling hydro-pneumatic suspension units. GIRLING Ltd. Oct. 25, 1963 [Oct. 2, 1962], No. 37246/62. Heading F2S. A self-levelling hydropneumatic suspension unit for a vehicle comprises a piston 12 which works in a cylinder 11 having a two-way valve unit 20 at its upper end leading to a pneumatic spring pressure chamber 10 and which is provided with a hollow piston-rod 13, the interior of which forms a reservoir 27 containing a flexible bag 28 filled with air or other gas. An annular space 30 around the piston-rod 13 between the piston 12 and a closure 31 for the lower end of the cylinder 11 communicates with a passage 17 in the piston 12 which accommodates two spring-loaded ball valves 18, 19 arranged in series so that the annular space can be placed in communication with the reservoir 27 on the high pressure chamber in the cylinder 11 above the piston 12. A needle 24, having a tapered free end, is fixed in the centre of the valve unit 20, and extends with a sliding fit through a bearing 26 and an axial bore 25 in the piston 12 and into a guide 29 in the piston-rod 13, the bore 25 communicating with the radial bore 32 leading to the passage 17. In operation as the unit contracts the volume of the annular space 30 increases and liquid is drawn from the reservoir 27 past the valve 18 and the passage 17. When the unit extends liquid is pumped from the annular space 30 through the passage 17 and the valve 19 into the high pressure chamber of the cylinder 11. Pumping continues until the length of the unit has increased sufficiently for the tapered end of the needle 24 to correspond with the bore 32 in the piston 12 so that a progressively increasing amount of liquid is bypassed to the reservoir 27. On further extension of the unit the tapered portion of the needle 24 clears the bearing 26 so that liquid can also flow from the high pressure cylinder chamber to the reservoir 27. The rate at which liquid is pumped into the high pressure chamber of the cylinder is progressively reduced until the bore 32 is uncovered and the extension of the unit ceases.
Patent GB-1334586-A (GB)
Title: Seal and associated apparatus
IPC: A01F12/44
Filed: 1971-08-09
Abstract: 1334586 Sealing element DEERE & CO 9 Aug 1971 [8 Aug 1970] 37359/71 Heading A1F A seal, between an upstanding marginal wall on an oscillating member and a fixed wall, comprises a resiliently deformable portion sealing the gap between the walls and a fixing portion for releasably securing the seal to one of the walls this wall housing elements distributed along its length coacting with complementary elements on the seal fixing portion, the elements being engaged by relative movement between the seal and the wall. In an embodiment, a combine harvester has a seal 4 Fig. 3 between an oscillating screening box 3 and a fixed wall, which seal comprises a resilient lip shaped portion 5, abutting the wall, and a portion 4a releasably fixed to a marginal wall 3a of the oscillating part e.g. by pin means 7 engaging complementary slots (6) Fig. 2 (not shown) in the wall. The seal may be held in position by an easily releasable means e.g. bolt on the element engaging a nut fixed to the wall, or a snap-over mechanism. The portion 4a of the seal may be U-shaped, of rubber or plastics, formed integral with lip portion 5, and vulcanised or stuck to a metal insert 12. Alternatively, the U-shaped portion 4a may comprise two metal parts 15, 17 Fig. 5, fixed by bolts 22 to a sealing portion 20. The seal may, alternatively, be removably secured to the fixed wall and abut the oscillating part.
Patent GB-1210188-A (GB)
Title: Improvements in or relating to arrangements of steel mats for concrete structures
IPC: E04C5/04
Filed: 1969-07-25
Abstract: 1,210,188. Reinforcement mats. BAU-STAHLGEWEBE G.m.b.H. 25 July, 1969 [8 Aug., 1968], No. 37533/69. Heading D1K. A reinforcement structure comprises longitudinal and transverse rods secured together, the mid section of the structure haying single or double longitudinal rods 2 equally spaced and secured to the transverse rods 6 on one side only. The longitudinal rods 3, 4 at the opposite ends of the transverse rods of each structure are spaced apart a distance band the. distance c between the outermost longitudinal rod or rods of the central portion and the centre line between the two marginal longitudinal rods 3 or 4 is equivalent to twice the distance between the longitudinal rods of the central portion. In addition the longitudinal rods 3, 4 at each end are on opposite side of the transverse rods 1. When two structures are placed together their edges are overlapped and the longitudinal rods are distributed as illustrated in Fig. 2 with the lateral rods 1 of both structures remaining in the same plane.
Patent GB-1406503-A (GB)
Title: Magnetic materials
IPC: H01F1/34
Filed: 1972-08-11
Abstract: 1406503 Ferrites IMPERIAL CHEMICAL INDUSTRIES Ltd 1 Aug 1973 [11 Aug 1972] 37544/72 Heading C1J A ferrite comprises, in addition to its main components (defined), an additional modifying metal (defined) having a limited solubility in the ferrite, present in an amount in excess of that which can normally dissolve, this excess being present in significant proportions within at least part of the interior of the ferrite grains in addition to being present at the grain boundaries. The excess modifying metal when in the grain interior may either be in the form of a supersaturated solution or a precipitate. The main components may be Mn/Zn, Cu/Zn, Ni/Zn, or Ba. A suitable preparation involves co-precipitation (e.g. with ammonium carbonate or bicarbonate) of the metals as isomorphous salts (e.g. carbonates) and heating to form the ferrite, which may in turn be calcined, granulated, shaped and sintered to form a magnetic material. In a particular preparation an aqueous solution of the salts of the main components and additional modifying metal is mixed with an aqueous solution containing ammonium bicarbonate at least 30% in excess of that stoichiometrically necessary to precipitate the metal ions as carbonates which precipitated mixture is then heated (e.g. above 500‹ C.) to form the ferrite composition. The salts may be nitrates, sulphates or chlorides and precipitatable sols. (e.g. SiO 2 ) may also be included. In the examples Mn/Zn ferrites are prepared having as modifying metals of limited solubility, Ca, and also a modifying metal of much higher solubility namely Ti. Other modifying metals of limited solubility referred to in the case of Mn/Zn ferrites are Sr and Ba.
Patent GB-1156513-A (GB)
Title: Sulfonamides and Crosslinking of Polymers
IPC: D06M13/438
Filed: 1966-08-23
Abstract: 1,156,513. Sulphonamides. J. P. STEVENS & CO. Inc. 23 Aug., 1966 [16 Nov., 1965], No. 37646/66. Heading C2C. [Also in Divisions C3 and D1] Novel sulphonamides of the general formula wherein R and R<SP>1</SP> are hydrogen or C 1 -C 5  alkyl and Q is a substituted or unsubstituted aliphatic group are prepared by reacting a selected sulphonamide with formaldehyde or a formaldehyde-yielding substance under controlled pH conditions, i.e. pH 4-7, the bishydroxy compound being optionally converted to the ether by treatment with an alcohol or the etherified compounds may be obtained directly by reacting an alkali metal salt of the sulphonamide with an alkyl halomethyl ether. The compound N-(methoxymethyl)-methanesulphonamide is prepared by treating methane sulphonamide with sodium hydride and then adding methyl chloromethyl ether.
Patent GB-1011659-A (GB)
Title: Preparation of l-citrulline by fermentation
IPC: C12P13/10
Filed: 1964-09-15
Abstract: L-Citrulline is prepared by aerobic culture of an arginine-requiring auxotrophic mutant strain of Bacillus subtilis or Bacillus megaterium on an aqueous nutrient medium containing assimilable carbon and nitrogen sources, organic growth promoting agents, essential inorganic ions and 5 to 100 milligrams per decilitre of arginine. Preferably L-levcine or L-isolevcine is present in the nutrient medium.
Patent GB-1355771-A (GB)
Title: Preparation of dry free-flowing molasses
IPC: A23K10/33
Filed: 1972-08-11
Abstract: 1355771 Molasses product SUDDEUTSCHE. ZUCKER AG 11 Aug 1972 [24 Aug 1971] 37668/72 Heading A2B Dry, free-flowing molasses, suitable for use as a fodder, are prepared by heating moist molasses, adding alkaline earth metal oxide and/or hydroxide, foaming the mixture by passing air or other inert gas therethrough, and drying the foamed product.
Patent GB-1021667-A (GB)
Title: Improvements in or relating to centrifugal pumps
IPC: F04D29/22
Filed: 1962-10-05
Abstract: 1,021,667. Centrifugal pumps. AJEM LABORATORIES Inc. Oct. 5, 1962 [Oct. 6, 1961], No. 37769/62. Heading F1C. The submersible pump shown comprises sealing bushes 41 and 42 which surround the impeller eye 17 and the impeller hub 20, respectively, with clearances of at least 0À003 inch to allow suspended particles in the liquid to pass freely through without abrasion or jamming. A similar clearance is provided between an annular flange 43 and the pump shaft 22. Leakage through the bush 42 is minimized by the action of the impeller 10 in throwing liquid in the space above the impeller outward by centrifugal force. In addition, the leakage is opposed by centrifugal action when flowing inwardly over the end of the impeller hub 20 towards the clearance between the flange 43 and the shaft 22. Liquid climbing up the shaft 22 is thrown off below an annular partition 48 by a slinger disc 50. Drain ports 54, 55 are provided in the coumn 46.
Patent GB-1383572-A (GB)
Title: Flexure devices
IPC: G06G5/00
Filed: 1972-03-21
Abstract: 1383572 Force balance mechanism SYBRON CORP 21 March 1972 [28 May 1971] 37797/73 Divided out of 1383571 Heading G1W [Also in Divisions E2 and F2]  The disclosure is identical to that of the parent Specification 1383571, but the claims relate to a flexure device.
Patent GB-1285876-A (GB)
Title: Improvements in and relating to display arrangements
Inventor: BUCKLAND ERNEST CLIFFORD
IPC: G01F23/00
Filed: 1968-08-09
Abstract: 1285876 Display system K D G INSTRUMENTS Ltd 24 Oct 1969 [9 Aug 1968] 38246/68 Heading G1J A display arrangement for displaying indications related in a predetermined manner to an electrical signal comprises a movable medium 8 having information recorded thereon, a servo mechanism 7 for bringing a part of the recorded information determined by the electrical signal in front of a reading device 9, and means 10 for displaying the information read by device 9. Liquid storage tanks 1, 2, 3, and 4 each have a transducer 11, 21, 31 or 41 respectively producing a signal proportional to the depth of liquid. A switch 5 selects the output from one of the tanks and uses it to control a servo motor 7 so that the angular position of drum 8 varies with the signal. Drum 8 carries a strip of record medium e.g. film for each of the tanks, the strip having recorded thereon values of the volume of liquid in the tank. Reading means 9 e.g. a television camera, is automatically positioned over the strip corresponding to the tank selected by switch 5, via gauged switch 16 and servomechanism 13, and the value recorded on  the strip opposite the reading means is displayed at 10 e.g. on a cathode ray tube. The volume indications on the record strips are derived by  calibration such that the volume of liquid in the tank is displayed at 10. The camera may alternatively be fixed and the drum 8 movable along its axis. The indications on the film may be in binary code and the reading means a suitable scanner coupled to a digital display. The film may be replaced by a medium with punched holes or use a magnetic ferrous oxide coating to record the information.
Patent GB-1483557-A (GB)
Title: Magnetic stethoscope
IPC: H04R27/00
Filed: 1975-09-18
Abstract: 1483557 Stethoscopic devices STANDARD TELEPHONES & CABLES Ltd 18 Sept 1975 38359/75 Heading H4J A stethoscope comprises a cup-shaped housing 1 having an aperture 4, and otherwise closed by a magnetic diaphragm 3. A flexible tube 6 acoustically connects to the interior of the chamber through the aperture 4 and has a listening device (not shown) at the other end, the stethoscope is for use with public address pillars in zoos, &c., where recorded information is made available to the public. The pillar may have a marking indicating where a stethoscope is to be placed and under the marking is a coil with pole pieces, the coil being electrically connected to a tape recorder or other source of speech signals. The coil and polepieces produce a varying magnetic field to which the diaphragm 3 is coupled. The housing, tube and listening device (a simple earpiece) are of plastics materials. The edge of the peripheral wall of the housing or the surface of the pillar may be grooved or have other surface irregularities to ensure, that the major acoustic loading on the diaphragm is in the chamber of the housing 1 connecting with the tube 6.
Patent GB-1368284-A (GB)
Title: Operation of jet mills
IPC: B02C19/06
Filed: 1971-08-16
Abstract: 1368284 Jet mills; pneumatic and centrifugal separators ALPINE AG 16 Aug 1971 [14 Aug 1970] 38403/71 Headings B2A B2H and B2P A jet mill comprises a nozzle 3, Fig. 1, arranged at the bottom of a container 2 and receiving, e.g. compressed air via a chamber 4. A bed of material 5 is kept in continuous motion, e.g. by vibrating the container 2 by means of a vibrator 9, so that material continuously flows into the jet and ground material flows away from it. The disposition of the nozzle beneath the bed is such that the kenitic energy of the jet is substantially absorbed within the bed, comminuted material being fed to a separator or sifter operated independantly of the jet and arranged above the level of the bed of material. In a second embodiment, the bed is kept in motion by fluidising it, Fig. 2 (not shown), and the bed may be wide enough to prevent material being flung through the bed by the jet. The bed may be kept in motion by an agitator 17, Fig. 5, or by a bucket elevator 22 and chute 23, Fig. 6 or by a pneumatic conveyor, Fig. 7 (not shown). Various known separators may be used using bladed rotors, Fig. 9 (not shown), an arrangement of zig-zag pipes, Fig. 10 (not shown), a chamber 70 including adjustable guide blades 30, Fig. 8, with screw feed for material to be ground, or a chamber including propellant jets 41, Fig. 12. A simple riser tube may also be used as a separator, Fig. 13 (not shown). A rotary separator including a rotor and stator forming between them a zig-zag path (as seen in section) may be used, Fig. 14a. The nozzle may be closed by a pneumatically-actuated needle valve, Fig. 16 (not shown), when the mill is stopped or the supply of comminuting gas ceases. The nozzle 63 may be in the form of an adjustable slot, varied by displacing a plate 65 by means of a screw 66, Fig. 17. Alternatively a known annular slot nozzle may be used, Fig. 18 (not shown). The level of material may be detected by a probe or baffle plate controlling a switch, Fig. 19, (not shown). This may in turn regulate the rate of feed. The jet may be developed by the use of a gas turbine.
Patent GB-908102-A (GB)
Title: Improvements in and relating to the polymerisation of olefines and to the preparation of catalyst components therefor
Inventor: REED HUGH WILMA BOULTON
IPC: C01G23/00
Filed: 1958-12-01
Abstract: A crystalline material consisting of aluminium, titanium and chlorine, in which the titanium is substantially all in the trivalent state, and which is stable at 250 DEG C. at 1 mm. absolute pressure, is prepared by reacting aluminium with titanium tetrachloride, preferably in excess, at 80 DEG -220 DEG C., for example by refluxing under atmospheric pressure, in the presence of boron trichloride. Any unreacted titanium tetrachloride is separated from the reaction product, for example by distillation, or, preferably, by separating the crystalline material from the reaction product containing an inert liquid diluent, e.g. a hydrocarbon (which may have been present during the reaction or added subsequently) for example by filtration, decantation or centrifuging.  The boron trichloride may be introduced in the gaseous or liquid state.  The atomic ratio Al:Ti:Cl in the crystals obtained is approximately 1:3:12.  The product may be ground for example in a ball mill.  The product may be employed as a catalyst component for the polymerization of olefines containing a vinyl group.  Specifications 845,720 and 877,050 are referred to.ALSO:A crystalline material containing aluminium, titanium, and chlorine in the approximate atomic ratio 1:3:12, and prepared by reacting aluminium with titanium tetrachloride at 80 DEG -220 DEG C. in the presence of boron trichloride, is employed as a catalyst component in the polymerization of olefines containing a vinyl group, the other catalyst component being an organometallic compound of aluminium having at least one hydrocarbon radical attached to the aluminium, the remaining valencies being satisfied by hydrogen or a halogen, the hydrocarbon radical being an alkyl, alkenyl, alkynyl, cycloalkyl, aryl or aralkyl radical. In an example propylene is polymerized at 70 DEG C. in the presence of the crystalline material and aluminium diethyl chloride dissolved in petroleum ether and methyl cyclohexane.  Methanol is added after the reaction and the solid polymer filtered off from the resulting slurry.  Specifications 845,720 and 877,050 are referred to.