baber/WOPTO huggingface dataset:
Patent GB-888963-A (GB)
Title: Improvements in or relating to the recovery of cadmium
Inventor: DERHAM LESLIE JACK
IPC: C01G11/00
Filed: 1958-11-26
Abstract: Cadmium-containing materials in the form of by-products from the sintering of ores containing zinc and lead are sulphated in an atmosphere of sulphur dioxide and air.  Suitable starting materials are the lead- and cadmium-containing accretions collecting on the bars of zinc ore sintering furnaces, and the cadmium-containing lead sulphate sludge deposited in electrostatic precipitators from the gas resulting from such sintering.  Such cadmium-containing material is reacted with sulphur dioxide in a rotary kiln, preferably in the presence of added ferric oxide. Temperatures of 550 DEG -650 DEG C. are employed and the atmosphere contains 2-6% sulphur dioxide. Comparative examples illustrate roasting at up to 800 DEG C. using sulphur dioxide concentrations up to 10%.
Patent GB-1393288-A (GB)
Title: Method of and apparatus  for the controlled discharge of  bulk materials from storage containers
IPC: G01F11/00
Filed: 1972-08-16
Abstract: 1393288 Discharging bulk materials BUEHLER AG GEBR 16 Aug 1972 [16 Aug 1971] 38145/72 Heading B8S A storage container for bulk materials has a vibrating outlet device and an insert member rigidly fast with the container disposed above the outlet device a distance similar to the width of the outlet device. A flow-regulating compartment is thus formed between the outlet and the insert, so that a load-relieved flowregulating section is formed in the flow-regulating compartment. In the figures, storage container 1 is provided with outlet 2 vibrated by means 9 and insert 5 comprising upwardly facing surfaces 6 forming a pyramid-like body carried by transverse support 7 having inverted V-shaped surfaces 8 on its upper surfaces. Alternative embodiments are shown in other figures.
Patent GB-1355398-A (GB)
Title: Elastomeric expansion joint filling member for curbs
IPC: E01C11/12
Filed: 1971-08-17
Abstract: 1355398 Expansion joints GENERAL TIRE & RUBBER CO 17 Aug 1971 [18 Aug 1970] 38566/71 Heading E1B A curb expansion joint between adjacent sections of a concrete bridge deck comprises reinforced elastomeric members 12a and 12b each secured to a respective section by rods 35 passing through holes 41, 51 and secured together by bolts passing through holes 43, 53, means 46 also being provided for connecting the curb expansion joint to the main joint filling member 10. The main expansion joint may be at between 20‹ and 90‹ to the curb and therefore the distance between the grooves 16a and 16b will vary so either a selection of members 12a and 12b of various widths is provided or the members are cut to size and holes 43, and 53 drilled on site. The curb joint is connected with the main joint by tongues and grooves, or rebates and by a sealing compound and/or a waterproof backing strip.
Patent GB-1179097-A (GB)
Title: Improvements in or relating to Rotary Fluid Circulators, e.g. for Nuclear Reactors.
IPC: G21C15/253
Filed: 1967-08-24
Abstract: 1,179,097. Fluid bearings; lubricating; expansion joints. GULF GENERAL ATOMIC Inc. 24 Aug., 1967 [6 Sept., 1966], No. 39030/67. Headings F2A and F2G. [Also in Division F1] In a fluid circulator (see Division F1), lubricant, e.g. water, liquid sodium or liquid mercury, is delivered through passages 98, 99, 72, Fig. 2, to journal bearing 68, and through passages 98, 101, 88 to journal bearing 79 and thereafter to journal and thrust bearing 81. The bearings support the shaft by externallysupplied hydrostatic pressure as well as by the hydrodynamic fluid film developed by rotation. Conduits (117, 118, 124), Fig. 1 (not shown), are associated with bellows sections (134, 136, 138) which facilitate thermal expansion.
Patent GB-1373437-A (GB)
Title: Sterilizers having cylindrical tanks
IPC: A23L3/02
Filed: 1972-08-24
Abstract: 1373437 Cleaning containers &c. SCHIEDAMSCHE WERKTUIGEN-EN MACHINEFABRIEK NV 24 Aug 1972 [27 Aug 1971] 39459/72 Heading B8T [Also in Divisions A2 and A5] Cans or bottles are supplied in batches of four side by side to a sterilizer formed by a tank 1 having a rotatable drum 15 in which are groups of cylindrical cages 23. The cans enter the sterilizer through a sealable opening in a plate 28, the drum 15 being rotated intermittently until all the cages 23 are filled. The entry opening is then closed (by means not shown) and sterilizing fluid, e.g. steam, is introduced into the tank. The drum 15 is then rotated, either continuously or intermittently, while sterilization takes place. The cans are supplied on a chain conveyer (34), Fig. 4 (not shown), and pushed into the tank by vertically swinging arms (not shown). Sterilized cans are pushed out of an opening in the rear head 2 of the tank by incoming cans. Four sterilizers may be grouped, Fig. 6 (not shown).
Patent GB-1381481-A (GB)
Title: Aerofoil-shaped blades
IPC: F01D5/18
Filed: 1971-08-26
Abstract: 1381481 Turbine blades ROLLS-ROYCE (1971) Ltd 25 Aug 1972 [26 Aug 1971] 40019/71 Heading F1T A gas turbine blade 15 including longitudinal cooling air passages 21 has groups of holes 22 extending transversely from the passages to the blade surfaces. Each group extends to only one surface, the groups from adjacent passages 21 extending to opposite surfaces. The holes 22 may be circular of diameter 0.005 to 0.010 ins and with a length to diameter ratio of from at least 20 up to 100 or more. The holes 22 in any group may be parallel to the sides of an adjacent passage 21, as shown, or may diverge to emerge over a greater area of the blade surface. Additionally, holes 22 may be inclined to the transverse plane of the blade or may be formed as narrow slits running lengthwise of the blade. Further longitudinal passages 40, 42, 44 are provided, passage 40 communicating with the trailing edge through holes 41 and passage 44 supplying passage 42 via holes 45, passage 42 communicating with the blade surface through holes 46. To facilitate manufacture the blade may be made in two halves joined along the chord line. Depending upon whether they communicate with the convex or concave blade surfaces the passages 21 are supplied with lower or higher pressure cooling air. This may be done by providing the blade root with two plenum chambers 31, 35, Fig. 3, chamber 31 and its associated passages 21 being supplied with highpressure air from a fixed nozzle 30. Leakage air from chamber 31 tends to move outwards through labyrinth 33, where its pressure is reduced, and then into chamber 35 to feed the other passages 21. Alternatively the blade root may have a single plenum chamber communicating through different size restrictions with respective passages 21.
Patent GB-876002-A (GB)
Title: Improvements in and relating to automatic frequency control systems for oscillators
Inventor: GURNEY JOSEPH BENJAMIN
IPC: H03J7/08
Filed: 1958-12-12
Abstract: 876,002. Automatic frequency control. LEE PRODUCTS (GREAT BRITAIN) Ltd. Dec. 3, 1959 [Dec. 12, 1958], No. 40154/58. Class 40(5) The frequency of the local oscillator of a television or radio f.m. receiver is automatically controlled by the provision of a diode associated with the resonant circuit of the oscillator, variations in a control signal derived preferably from a ratio detector or phase discriminator causing corresponding variations in the diode reactance and therefore of the oscillator frequency. In the Figure accompanying the Provisional Specification the control signal is fed in through an amplifier valve V 1  and applied to a semi-conductor diode D via a potentiometer network R 4 , R 5 , L 1  C 5  being the resonant circuit of the local oscillator LO. In another embodiment (Fig. 1, not shown) the valve acts also as an audio frequency voltage amplifier while in yet another embodiment (Fig. 2, not shown) the valve is connected as a cathode follower. Reference has been directed by the Comptroller to Specification 810,311.
Patent GB-1045130-A (GB)
Title: Improvements in or relating to the coating of aluminium can-stock
IPC: C23C22/83
Filed: 1965-09-21
Abstract: Aluminium food or drink can stock, conversion coated by an aqueous acidic solution containing phosphate e.g. 2-285 g/1 PO4, chromate, e.g. 2-62 g/1 CrO3 and fluoride e.g. 0.15-12.5 g/1 F, is after-rinsed with an aqueous solution of a water-soluble bisulphite, such as an alkali or alkaline earth metal or ammonium bisulphite, e.g. sodium bisulphite.  The rinsed conversion coated aluminium can stock may then be provided with a sanitary lacquer, e.g. by spraying on a butadiene-1, 3 polymeric lacquer.  Preferably, the conversion coating has a weight not exceeding 323 mg/sq.m. Prior to coating, the aluminium may be cleaned with a cleanser containing pyrophosphate, tripolyphosphate, metasilicate and detergent.  The afterrinse may be in two stages with no recirculation. Aluminium alloys used for can stock may be those containing 2.5 or 5.2% Mg.
Patent GB-1004763-A (GB)
Title: Snap action fluid pressure actuator
IPC: H01H35/26
Filed: 1962-10-29
Abstract: 1,004,763. Hydraulic apparatus. VAPOR CORPORATION. Oct. 29, 1962 [Dec.15, 1961], No. 40856/62. Heading F1P. [Also in Division H2] A snap-action differential fluid-pressure actuator comprises a casing 10, 11, 12, two pressure chambers 31, 46 joined by a passageway 45 and two diaphragms 14, 13 responsive respectively to pressures in the chambers, the passageway being opened and closed by the end 39 of a piston 25. When the pressure, supplied to the chamber 31 through a conduit 32, reaches a predetermined amount, the diaphragm 14 forces the piston 25 to the right overcoming the biasing effect of a spring 61, thus opening the passageway 45 and allowing the pressure to operate against the diaphragm 13, so overcoming the biasing effect of a spring 60 and driving a plunger 48 against a switch plunger 51 to operate the switch 52. A ball check valve 73 is provided to seat against a recess 76 and an adjustable stop 74 to close a passageway 69 through the piston 25 while the switch is being actuated. When the pressure supplied through conduit 32 subsequently drops, the spring 61 returns the plunger 25 and stabilizer 65 so that the pressure in chamber 46 drops as it becomes open to the atmosphere through the passageway 69 through piston 25 and vents 72 in the casing 12. The spring 60, thus, returns the plunger 48 to its original position, deactuating the switch 52. In a modification, Fig. 5 (not shown), the plunger 48 protrudes from the casing 11, the piston 25 is elongated with the end-cap of the casing providing the adjustable stop for the ball check valve 73, and the pin 26 is threadedly received in the piston 25.
Patent GB-1089145-A (GB)
Title: New water-soluble azo dyes and their production
Inventor: BAUMANN HANS
IPC: C09B43/128
Filed: 1966-09-13
Abstract: The invention comprises water-soluble azo dyes of the formula <FORM:1089145/C4-C5/1> wherein X is H, alkyl, alkoxy or acylamino, Y is H, alkyl, alkoxy or SO3H, R is H, alkyl or substituted alkyl and n is 1 or 2. They may be obtained by reacting an azo dye of the formula <FORM:1089145/C4-C5/2> with diketene with acetoacetylation of the amino group.  Examples are given for the production of the dyes. They are useful for dyeing or printing natural or synthetic polyamide textile materials.
Patent GB-1121751-A (GB)
Title: Method of and apparatus for the cleaning of motor vehicle bodies
IPC: B60S3/04
Filed: 1965-09-28
Abstract: 1,121,751. Apparatus for the cleaning of motor vehicle bodies. KOPAT GESELLSCHAFT FUR KONSTRUKTION ENTWICKLUNG UND PATENTVERWERTUNG m.b.H., & CO. K.G. 28 Sept., 1965 [30 Sept., 1964; 1 Dec., 1964], No. 41185/65. Heading B7J. Apparatus for washing motor vehicle bodies, includes means for producing and spraying hot water and washing agent under pressure on to a vehicle body, and means producing and spraying demineralized final rinse water on to the body. In one embodiment, a manually operable spraying pipe 15 is supplied initially with heated softened water drawn from a container 3 via conduits 16, 18 and a pump 10 and mixed in an injector 8 with liquid washing agent from a container 7; is then supplied with fresh water through a conduit 19 and the pump 10 from a supply 20; and is finally supplied with demineralized water from cation and anion exchangers 55, 56 through a conduit 52 under mains pressure, the apparatus being manually controlled by a switch on the pipe 15 or automatically controlled according to time or quantity of water by a coin-energized motor which drives cams co-operating with control contacts. The container 3 is supplied with water from a softener 1 supplied from the supply 20, the softener 1 being regenerated by automatic or manual rinsing with cooking salt solution. The ion exchangers 55, 56 may be regenerated by hydrochloric acid and caustic soda from containers 57, 58. In another embodiment, the softener 1 is omitted; a surface tension reducing agent e.g. fatty alcohol sulphonates, is mixed with demineralized rinsing water; and the washing water, the fresh water rinse and the demineralized water rinse are each delivered vai the pump 10. The fresh water rinse may be supplied from the supply 20 or from the heated container 3.
Patent GB-1310739-A (GB)
Title: Production of polyethylene under high pressure
IPC: C08F10/00
Filed: 1970-08-27
Abstract: 1310739 Polymerizing ethylene BADISCHE ANILIN- & SODA-FABRIK AG 27 Aug 1970 [28 Aug 1969] 41190/70 Heading C3P Ethylene is polymerized at 150 to 400 C. under high pressure in the presence of 1 to 50 molar parts per million of methyl isobutyl ketone peroxide. A mixture of oxygen and methyl isobutyl ketone peroxide in a weight ratio of 0À1 : 1 to 5 : 1 may be used as initiator, and conventional polymerization regulators may be present. The process may be effected batchwise or continuously in a tubular reactor. The product is stiff transparent polyethylene of density 0À924 to 0À935 g./c.c. In examples ethylene is polymerized in the presence of methyl isobutyl ketone peroxide and (1) acetone, (2) methyl ethyl ketone and (3) oxygen and methyl ethyl ketone.
Patent GB-1127213-A (GB)
Title: Method for making semiconductor devices
IPC: C23C2/14
Filed: 1965-09-28
Abstract: 1,127,213. Semi-conductor devices. MATSUSHITA ELECTRONICS CORP. 28 Sept., 1965 [12 Oct., 1964], No. 41233/65. Heading H1K. [Also in Division C7] To alloy metal contacts to a semi-conductor wafer, the wafer is masked by a suitable surface coating and the masked wafer then immersed in an ultrasonically vibrated bath containing the molten metal. The exposed portions of the masked wafer dissolve in the metal to produce recesses in the wafer surface, and the surfaces of these recesses ultimately become covered with a recrystallized layer of metal-semiconductor alloy. A transistor in which both the ohmic base contact 14 and the rectifying emitter contact 13 have been formed by this method is shown in Fig. 7. An NPN sandwich is first formed by diffusing antimony into the major faces of a P-type germanium wafer of sufficient dimensions to provide several hundred transistors. A silicon oxide coating is then applied to the wafer and each single transistor portion of it has the coating etched away to provide openings 7 and 8, Fig. 4b, for the emitter and base contacts to be formed. These are formed by dipping the coated wafer in ultrasonically vibrated molten lead containing a few per cent of antimony as a dopant for the semi-conductor and a trace (less than 1%) of tin, silver or gold to assist wetting. On removal from the bath excess molten metal is wiped off the wafer and the emitter contacts are subsequently coated with a paste consisting of aluminium or boron powder in a viscous higher alcohol. In a subsequent heat treatment recrystallized P-type region 16 and N-type region 17, Fig. 7, are formed. Since the antimony diffuses more rapidly than the aluminium or boron the original N-type layer 2 of the NPN sandwich spreads to form a continuous base zone beneath the emitter and base contacts 13, 14 and the P-type central zone. 1 of the original NPN sandwich provides a collector zone. The wafer is subsequently cut along line 20 and diced into separate PNP transistors. The oxide layer 4 may be left in position or removed by treatment with acid. A silicon transistor may be made in a similar way except that the original sandwich is a PNP sandwich and it is the base contact which is subsequently doped with boron or aluminium, the resulting structure being an NPN transistor. With silicon, tin is preferred to the lead used with germanium as the principal constituent of the molten alloying metal. Other materials mentioned as possible constituents of the metal bath are indium and arsenic.
Patent GB-1024053-A (GB)
Title: Treatment of particulate solids
Inventor: HUGHES WILLIAM
IPC: B01F27/93
Filed: 1962-11-01
Abstract: Apparatus for grinding or dispersing particulate solids in liquids in the presence of a particulate milling medium comprises a container 1, 2 having rotatable therein a shaft 10 carrying impellers 11 which co-operate with baffles 16 projecting inwardly from the wall of the container. The shaft is surrounded by a loose collar 14 carrying vanes 15.  The top of the container has an overflow channel 8 with a lead-off pipe 9 while at the bottom of the container is an orifice 5 connected to an inlet pipe 6 fitted with a rubber non-return slit valve 7.  The impellers are solid or hollow discs or spoked annular members and may carry projections on their upper and/or lower surfaces. The baffles preferably have such a crosssection <PICT:1024053/C1/1> that smooth curves are formed between the upper and lower surfaces of the baffles and the inner wall of the container.  The inner edges of the baffles may be formed with serrations or castellations.  The impellers and baffles may be coated with, or composed of, polyurethane rubber.  Details are quoted of the diameter, thickness, spacing and speed of the impellers as well as of the thickness of the baffles and the distance they project inwardly from the container.  The upper portion of the container may be a cylindrical extension of the lower portion thereof. Another form of container may have an inlet port at the upper end thereof and at the lower end an exit port with a sieve for retaining milling medium while allowing the liquid and milled solid to pass out of the container.  A grinding apparatus in which the feed is introduced into the top of the container may be used in series with a grinding apparatus in which the feed is introduced into the bottom of the container.  Examples for grinding titanium dioxide pigment are described.
Patent GB-1485455-A (GB)
Title: High strength low carbon steel and method of producing it
IPC: C22C38/00
Filed: 1974-09-24
Abstract: 1485455 Nitrogen alloyed deep drawing steel ARMCO STEEL CORP 24 Sept 1974 41501/74 Heading C7A Cold reduced and annealed steel sheet stock of thickness 0À5 to 2À29 mm (0À02 to 0.09 inches) and average yield strength of at least 70 ksi(483 MN/m<SP>2</SP>; consisting of and sufficient nitrogen to combine substantially with the Ti and/or Nb and/or Zr, remainder iron and impurities. The steel may be produced by providing a deep drawing quality steel containing: C 0À002 to 0À015% N 2  0 to 0À012% Total Al 0 to 0À08% cold-rolling the steel to 0À5 to 2.29 mm, annealing and heating in an atmosphere of 2 to 10 volume per cent ammonia and hydrogen at 1100‹ to 1350‹F for a period of time sufficient to form small uniformly dispersed nitrides and to raise the yield strength to at least 70 ksi. The steel may be deep drawn prior to the nitriding treatment and may be subsequently denitrided in a hydrogen atmosphere at 1100 to 1350‹F for a period of time sufficient to decrease the ductile to brittle transition temperature to at least -60‹F.
Patent GB-1514274-A (GB)
Title: Grain sensor for combine-harvesters
IPC: A01D41/127
Filed: 1975-10-09
Abstract: 1514274 Acoustic grain sensor CLAAS MASCHINENFABRIK GmbH GEBR 9 Oct 1975 [12 Oct 1974] 41524/75 Heading G1G Grain throughput or loss in a combine harvester is detected by a body microphone 8 clipped to the centre of a rigid impact plate 1 extending over most or all of the full working width of the straw walker or grain sieve of the combine harvester and resiliently secured to a trough-shaped support 3. The plate 1 may be of steel or aluminium or glass-reinforced plastic and a damping film 11 may be provided on its upper surface in the region of the microphone. There may be a plurality of body microphones. Baffles 12 acoustically divide the support which has an antiboom coating 13 and sound-absorbing metal-rubber mounting means 6.
Patent GB-1373703-A (GB)
Title: N-vinylpyrrolidone radiation grafted onto perhalogenated olefin polymers
IPC: C08F259/08
Filed: 1972-09-07
Abstract: 1373703 Semi - permeable membrane AGENCE NATIONALE DE VALORISATION DE LA RECHERCHE 7 Sept 1972 [9 Sept 1971] 41609/72 Heading B1X [Also in Divisions C3 and H1] A semi-permeable membrane consisting of N-vinylpyrrolidone grafted throughout a perhalogenated olefin polymer is used in electrodialysis, reverse osmosis and pervaporation techniques and in sea water desalination plants.
Patent GB-1088718-A (GB)
Title: Amino-organo-fluorosilicates
Inventor: DATHE CHRISTIAN
IPC: C07F7/12
Filed: 1965-10-01
Abstract: The invention comprises the complexes of amino-organo-trifluorosilanes with hydrofluoric acid.  These amino-organo-fluorosilicates may be prepared by reacting an organo-trifluorosilane which contains at least one amino group in the organic radical, or a trifunctional silane which can react with hydrofluoric acid to give the corresponding trifluorosilane, with hydrofluoric acid.  The process may be carried out in aqueous or alcoholic solution.  Examples describe the preparation of NH2(CH2)3SiF3.HF and NH2(CH2)2NH(CH2)3SiF3.2HF.
Patent GB-1104778-A (GB)
Title: Resilient mounting
IPC: F16C27/00
Filed: 1966-09-20
Abstract: 1,104,778. Resilient mountings. LORD CORPORATION. 20 Sept., 1966 [29 Nov., 1965] No. 41961/66. Heading F2S. [Also in Division B3] A resilient mounting consists of a loadcarrying element comprising a mesh of metal wires which is initially compressed into a block by pressure applied along one axis of the block stressing the wires beyond their yield point to develop a stable spring rate along said axis, the block being further compressed transverse to said axis to stress the wires beyond their yield point and develop a stable spring rate transverse to said axis without affecting the spring rate along said one axis. As shown, metal mesh annuli 8, 9, precompressed axially and radially according to the invention, are housed in a cupshaped casing 1 having an inwardly extending flange 4 and a cover 5 and are separated by the flange 7 of an inner cylindrical supported member 2. In a die construction for compressing the wire mesh axially and radially, Fig. 3, not shown, a mesh ring (13) is first compressed axially between the faces (15), (14), respectively of a stationary member (10) and an inner member (11) bolted to it, and then radial pressure is applied to the ring (13) by means of an annular piston (18) and a ring of elastomer (16) which acts hydraulically. The radial compression doubles the density of the mesh element. In another arrangement for radially swaging an annulus (19) of metal mesh material, which has previously been formed by axial compression and which fits over a centre member (21) of the die, Fig. 4, not shown, the annulus (19) is forced axially by a plunger (23), indirectly through a ring of elastomer (22), and a split washer (24), down a tapered section (25) of an outer stationary member, the primary change of the annulus being due to the radial compression.