baber/WOPTO huggingface dataset:
Patent GB-1184371-A (GB)
Title: Crossed-Field Discharge Device and Microwave Circuits incorporating the same
IPC: H01J25/58
Filed: 1967-05-08
Abstract: 1,184,371. Magnetrons. GENERAL ELECTRIC CO. 8 May, 1967 [2 June, 1966; 21 June, 1966], No. 21366/67. Heading H1D. In a crossed-field discharge tube which has an annular anode structure surrounding a cathode with a unidirectional axial magnetic field, which exhibits electric and magnetic field configurations generally similar to those disclosed in Specifications 1,158,589 and 1,158,590, and in which axially propagating waves are generated or amplified, the anode structure defines a frequency-determining folded resonant cavity for the device. The cathode 150, insulated by ceramic members 182 and 191, is mounted between copper-plated polepieoes 170 and coaxially within an anode structure 101 formed by two similar members 110, 130, shown spaced apart in Fig. 6, which are brazed to the metal envelope 102 which is provided with an exhaust tubulation 107 and cooling fins 108. Members 110 and 130 are recessed at 115 and 135 to provide, when assembled together, an outer cavity 120 coupled, through the passage 140 separating the two members, to an inner transmission line structure, open-circuited at each end, and formed by the interdigitated tapered fingers 125, 145, which extend from each of the two members into recesses formed in the other. The resulting folded transmission line structure, which supports axially propagating waves which are sustained by energy gain in the interaction region 160, provides an advantageously small ratio of device size to operating wavelength, and good mode separation. The cathode emissive material 161, Fig. 11, has the corrugated form disclosed in Specifications 1,158,589 and 1,158,590, and is also of stepped thickness along its length, as shown in Fig. 3, the resulting variation of width of interaction region 160 along its length permitting improved impedance matching with an output load, the coupling arrangement to which is as described in Specification 1,158,589. When used as an amplifier (Figs. 19 and 20, not shown), the signal is fed into one end of the coaxial transmission line constituted by the cathode as inner conductor and the anode structure as outer conductor. Dimensional data are given.
Patent GB-462051-A (GB)
Title: Improvements in hydrometers particularly applicable to fitting in electric accumulators
IPC: G01N9/16
Filed: 1935-07-29
Abstract: 462,051. Specific-gravity estimating- apparatus. COLLIE, J. H. July 29, 1935, Nos. 21445/35 and 5111/36. [Class 97 (iii)] In order to diminish the adherence of air bubbles, a pivotally supported member capable of angular movement in accordance with the changes of density of the liquid, e.g. the electrolyte of an accumulator, in which it is immersed, is made from a hard rubber composition containing sufficient sulphur to vulcanize it to a hard rubber stage having a hardness less than that of ordinary ebonite and has its surface finely roughened. As shown, a semicircular lamina E is pivoted at the centre of its diametrical edge to a disc D suspended by a strip of celluloid H, the upper end of which is held between the lid and rim of the accumulator. The lamina E is weighted at a point F displaced from the centre of volume and carries a pointer P co-operating with a scale S on the disc D. Alternatively, a pair of coloured markings on the disc D may be differentially covered by the lamina E. The device is held clear of the glass wall of the accumulator by an extension of the pivot pin.
Patent GB-769682-A (GB)
Title: Apparatus for use in the production of porous or homogeneous plastics
IPC: C08G18/08
Filed: 1952-12-17
Abstract: Apparatus for the continuous production of porous or homogenous polyurethanes from liquid components (e.g. by the process of Specification 769,680) comprises a confined chamber, a plurality of means for injecting the liquids under pressure into the chamber, at least one of the injection means being a nozzle adapted to operate at a pressure substantially higher than that in the chamber, and a discharge outlet from the chamber open to the atmosphere and of such a dimension that a superatmospheric pressure is maintained in the chamber.  The high pressure nozzle has a pressure difference of at least 20 atmospheres and may operate intermittently, the liquid entering either transversely or countercurrent to a continuous stream of another component.  The mixing chamber may be divided into two parts, in the second of which mixing is effected by tangential introduction of compressed air or by a mechanical stirrer.  The chamber may be mounted on a carriage which moves transversely of a travelling conveyer belt, so that discharged material forms a foil; alternatively the material may be discharged into moulds.  Suitable arrangements of apparatus and constructions of nozzles and mixing chambers are shown diagrammatically.ALSO:Apparatus for the continuous production of porous or homogenous polyurethanes from liquid components (e.g. by the process of Specification 769,680) comprises a confined chamber, a plurality of means for injecting the liquids under pressure into the chamber, at least one of the injection nozzles being a nozzle adapted to operate at a pressure substantially higher than that in the chamber, and a discharge outlet from the chamber open to the atmosphere and of such a dimension that a superatmospheric pressure is maintained in the chamber.  The high pressure nozzle has a pressure difference of at least 20 atmospheres and may operate intermittently, the liquid entering either transversely or countercurrent to a continuous stream of another component. The mixing chamber may be divided into two parts, in the second of which mixing is effected by tangential introduction of compressed air or by a mechanical stirrer.  The chamber may be mounted on a carriage which moves transversely of a travelling conveyer belt, so that discharged material forms a foil; alternatively the material may be discharged into moulds. Suitable arrangements of apparatus and constructions of nozzles and mixing chambers are shown diagrammatically.
Patent GB-215304-A (GB)
Abstract: 215,304. Reklamaktiebolaget Effekt. May 2, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Testing soaps. The lathering-power of soap is tested and displayed by passing air or other gas through a pipe e and a strainer cloth d into a solution b of the soap so as to produce foam F at the surface. The gas is preferably heated by an electric resistance h. Bubbles may be caused to escape into the room by using a light gas or sufficiently heated air. The frame of the apparatus may be shaped as a bear or a Triton, or the bowl a may be made as a washtub and the frame as a washerwoman. An apparatus in which the strainer is near the surface of the liquid, and in which the depth of the solution can be regulated, is also described.
Patent GB-640823-A (GB)
Title: Improvements relating to high frequency discharge apparatus
IPC: H03F3/54
Filed: 1945-08-22
Abstract: 640,823. Electric resonators. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 22, 1945, No. 21537. Convention date, Aug. 23, 1944. [Class 40 (viii)] [Also in Groups XL (a) and XL (c)] In a coaxial-line resonator 18 in which an electron discharge device 1 incorporated endwise in one end, has an anode-cathode feedback path defined by a pair of telescopic cylinders 32, 33 supported on the grid terminal, tuning is effected within the frequency range set by the adjustment of the length of the feedback path, by adjusting the position of the end of the inner conductor 27 of the resonator, along the anode terminal contact 21, or by adjusting the position of the choke 30 terminating one end of the resonator, or by moving the two in unison. Specification 584,787 is referred to.
Patent GB-1271157-A (GB)
Title: Manufacture of articles from powdered metals
IPC: A61C5/77
Filed: 1969-04-28
Abstract: 1,271,157. Artificial teeth. CERAMCO INDUSTRIAL PRODUCTS CORP. 28 April, 1969, No. 21616/69. Heading A5R. [Also in Divisions C3 and C7] Dental prostheses are formed from a putty comprising 2-25 micron metal powder and a binder comprising one of ammonium caseinate, ammonium stearate, pectin, hexamine, ethyl cellulose, anthracene, triacetyl starch, dulcin, carbazole and tetraphenyl ethylene and one of propylene glycol, water, eugenol, light paraffin oil, butyl acetate, butyl benzoate, diacetone alcohol and dibutyl phthalate, the putty being formed into the required shape e.g. by carving over a die and then sintered. In the formation of a coping for a dental crown the putty of gold or a gold alloy is applied to a die 14 in the shape of the tooth (Figure 2) and shaped to thickness by carving with a spatula. The die is a ceramic and is coated with mica in nitrocellulose to ease the stripping of the moulding. The assembly is prefired at 800-1200F, sintered at 1860F and then the sintered moulding is released from the die. To correct for shrinkage, a collar of the putty may be applied to the base of the die 14, the sintered moulding replaced on the die and embedded in the putty collar and then resintered. Au, Pt and RL powders may be mixed with silver resinate and a binder, the resinate decomposing during sintering to form Ag. Alternatively silver resinate may be applied to the sintered moulding which is then refired. An alloy of Au-Pt-Pd-Ag with or without 2-5% Si or Al may be used and liquid phase sintering may be applied to the following alloys. Ti-Ni 4:1 ratio Au-Pd-Pt-Ag-Si 80:5:5:5:8 ratio Fe-Ni-Bi-Sn 40:50:6:4 ratio In-Ni 3:7 ratio Fe-Cr-In-Sn 80:20:3:3 ratio Ag-Au-Si 45:50:8 ratio Ag-Au-Al 50:45:8 ratio The metal powders may be replaced by the oxides, hydroxides or organic metallic compounds which are reduced to metal on sintering.
Patent GB-1082938-A (GB)
Title: Polyurethane elastomers
Inventor: OERTEL HARALD
IPC: C08G18/10
Filed: 1965-05-21
Abstract: Polyurethane elastomers with improved dyeing properties and containing 20-1000 milliequivalents of tertiary nitrogen per kg. are made by reacting a linear dihydroxy compound of M.W. 500-5000 with a molar excess of an organic diisocyanate and reacting at 0-100 DEG  C. the -NCO terminated prepolymer thus obtained either in the melt or in an inert organic solvent with 80-130% of the stoichiometric amount of a chain extender of M.W. below 1000 of formula NH2NHCO-X-(CH2)n-Y-(CH2)n-A where A is an -OH group, -NH2 or -XCONHNH2, where X is oxygen, the -NH group, the <FORM:1082938/C3/1> group or merely a linkage, Y is a bifunctional radical obtained by removing the hydrogen atoms from the N atoms of piperazine or an alkylpiperazine or Y is the radical <FORM:1082938/C3/2> or the radical <FORM:1082938/C3/3> in which R is a lower alkyl group, R1 is phenylene, cyclohexylene, or xylylene, Z is an aromatic bifunctional radical and n is an integer from 1 to 6.  In a typical example, the prepolymer is formed from a polyester from adipic acid, hexanediol and 2,2-dimethylpropane-1,3-diol, and diphenylmethane-4,41-di-isocyanate. It is reacted with N-methylamine-bis-(propionic acid dihydrazide) and p-xylylene diamine in dimethylformamide.  A smoothly flowing solution is obtained by addition of a 33% rutile paste and small amounts of hexane-1,1-diisocyanate and n-butyl isocyanate.  Filaments of the elastomers may be spun by the wet or dry process, or films may be formed.
Patent GB-989784-A (GB)
Title: Method and device for loosening tightly-wound turns of a coil
IPC: C21D9/54
Filed: 1961-06-15
Abstract: 989,784. Unwinding strip. KLOCKNERWERKE A.G. June 15, 1961 [July 7, 1960], No. 21708/61. Heading B3E. A coil of strip 1 supported on a plate 3 with its inner end secured to a mandrel 2 and its outer end to a cylindrical casing 4 has its turns loosened by opposite rotation of the casing 4 on the one hand and the mandrel 2 and plate 3 on the other hand. Separate drives 6, 7 and 8 are provided for the casing 4, plate 3 and mandrel 2 respectively, the mandrel 2 and plate 3 rotating at the same speed and in the same direction. The plate 3 is apertured for the passage of furnace gas therethrough.
Patent GB-136662-A (GB)
Title: A New or Improved Method and Improvements in or connected with Means whereby Two or More Pictures, Objects or other Subjects are adapted to be Exhibited.
Inventor: PARKER EDWIN JOHN
IPC: G02B5/04
Filed: 1918-12-30
Abstract: 136,662. Parker, E. J., (Potts, S.). Dec. 30, 1918. Optical apparatus. - Pictures Band Care mounted on two faces of a prism A held in a mounting. Light only enters through the other faces, and, on looking into this face, one picture or the other is alone clearly visible from a position little removed from one from which the other picture is alone seer clearly.
Patent GB-649474-A (GB)
Title: Compositions comprising acrylonitrile polymers
IPC: C08J3/09
Filed: 1948-08-18
Abstract: Polymers and copolymers of acrylonitrile are dissolved in a -chloro-b -hydroxy propionitrile.  The copolymers, which preferably contain 50-95 per cent of acrylonitrile, may be of acrylonitrile with vinyl acetate, vinyl chloride, acrylic acid and its esters and homologues, styrene, isobutylene or butadiene.  The solutions may be prepared by dispersing the polymer in particulate form in the solvent at room temperature, heating the dispersion with agitation to a temperature of 100 DEG  to 105 DEG  C., and agitating at 100 DEG  to 105 DEG  C. until solution is complete.  The solutions may be used as lacquers or coating compositions or for the production of films, sheets, rods, tubes, containers or fibres.
Patent GB-1305009-A (GB)
IPC: B01J23/72
Filed: 1971-04-19
Abstract: 1305009 Activating aluminium SUMITOMO CHEMICAL CO Ltd 19 April 1971 [21 Feb 1970] 21849/71 Heading C2J [Also in Division B1] Aluminium or an alloy thereof, especially with silicon, iron, titanium or magnesium, is activated by heating at 70-200‹ C. (usually for at least 0À2 hours) in the presence of an activating agent comprising (1) a compound R 2 AlX where R is alkyl, aryl, aralkyl or alkaryl and X=R or is -H, alkoxy, aroxy, aralkoxy, alkaroxy or halogen, (2) a Group Ia or IIa metal or a compound thereof and (3) metallic copper or a compound thereof, usually in the presence of an organic solvent and hydrogen under pressure. Many components (1), (2) and (3) and combinations thereof are specified. The aluminium or alloy may be in the form of pulverized or atomized powder, cut pieces or drilling waste. The activated aluminium or alloy may be used in the preparation of organoaluminium compounds and in Examples 1 and 2 is reacted with triisobutylaluminium, isobutylene and hydrogen in an autoclave while in Example 3, aluminium powder is charged to an autoclave together with activating agent and isobutylene and reacted with hydrogen at 150‹ C.
Patent GB-994361-A (GB)
Title: Thermostatic electrical switch
IPC: H01H1/40
Filed: 1961-06-16
Abstract: 994,361. Thermal switches. TEXAS INSTRUMENTS Inc. June 16, 1961 [July 14, 1960], No. 21878/61. Heading H2B. A thermostatic switch 10 comprising an insulating base 12 having coated thereon conductive portions 14, 16, 32, has a thermallyresponsive element 40 connected to one portion 32 and capable of moving a contact 46 into and out of engagement with another portion 16 providing a stationary contact. The element 40 is a bi-metallic or trimetallic snap-acting strip having an adjusting screw 56 in engagement therewith for calibration purposes. A resistance heater 30 located in an aperture 38 of the base 12 is connected between conductive portions 14 and 32. The conductive portions 14, 16, 32, are printed on, etched on or selectively adhered to the insulating base 12. The switch 10 operates with rise of ambient temperature or with excess current through the heater 30.
Patent GB-1488641-A (GB)
Title: Process for producing a substitute for cacao butter and products thus obtained
IPC: C11C3/12
Filed: 1976-05-26
Abstract: 1488641 Cacao butter substitute A KARLESKIND 26 May 1976 [26 May 1975] 21902/76 Heading C5C A process for producing a cacao butter substitute comprises mixing together the following to produce a liquid mixture: (a) 40-60 wt. per cent of a first fatty material, 60 to 70% of the fatty chains of which have 18 C atoms, at least two-thirds of the 18 C atom chains consisting of oleic acid residues and 15 to 40% of the fatty chains consisting of palmitic acid residues, the material having a M.P. < 20‹ C. and an iodine index (I.E.) of 60-70; (b) 40-60 wt. per cent of a second fatty material, 70-80% of the fatty chains of which have 18 C atoms, at least 40% of the 18 C atom chains consisting of linoleic acid residues and 17 to 28% of the fatty chains consisting of palmitic acid residues, the material having a M.P. < 20‹ C. and I.E. of 102-115; and (c) 0 to 20 wt. per cent of a further fatty material selected from (1) a third fatty material, 40-70 wt. per cent of the fatty chains of which consist of linoleic acid residues and 15 to 40% of oleic acid residues, and having a M.P. < 20‹ C. and I.E. of 115-125, (ii) a fourth fatty material, 30 to 40% of the fatty chains of which consist of stearic acid residues and 45 to 50% of oleic acid residues, and having a M.P. of 30-45‹ C. and I.E. of 52-66, (iii) a fifth fatty material, 8 to 20% of the fatty chains of which consist of palmitic acid residues and 55 to 83% of oleic acid residues, and having a M.P. < 20‹ C. and I.E. of 75-95; and subjecting the liquid mixture to catalytic hydrogenation to obtain a maximum of palmito-oleostearide triglycerides. Material (a) is a fluid fraction from solid palm oil, (b) a cotton oil and (c) a turnsole oil, an olive oil or a kerite butter freed from its unsaponifiable fraction.
Patent GB-718156-A (GB)
Title: An improved wooden casket
IPC: A61G17/00
Filed: 1952-09-01
Abstract: 718,156. Boxes. LEVY & CO., Ltd., A., and MACKAY, W. R. Aug. 26, 1953, [Sept. 1, 1952.] No. 21915/52. Class 18. An ornamental box or casket has mitred corner joints secured by rails d between the sides, and a bottom fitting in grooves b in the sides and secured by screws f passing through the base of the sides into the grooves. The screws may also secure legs e.
Patent GB-954612-A (GB)
Title: Process for the production of acrylonitrile polymers
IPC: C08F20/44
Filed: 1962-06-06
Abstract: Acrylonitrile homo- and copolymers are produced by polymerizing acrylonitrile alone or with other ethylenically unsaturated compounds in aqueous medium at pH values below 7 by means of a catalyst comprising nitric acid and sulphur dioxide. Heavy metal ions may be present during polymerization. The source of metal ions may be ferrous sulphate, ferrous ammonium sulphate or copper sulphate. Copolymerizable monomers exemplified are methyl acrylate, vinylidene chloride and 1-methacroylamino -1- benzene -4- (sulphonylaminosulphonyl benzene). Specification 867,006 is referred to.
Patent GB-262688-A (GB)
Title: Improvements in or relating to tools for refacing valve seats
IPC: B23C3/05
Filed: 1926-09-06
Abstract: 262,688. White, A. E., (Albertson & Co.). Sept. 6, 1926. Portable turning-apparatus; cutters.-In a tool for removing the hardened crystalline surface from valve seats and refacing them, the cutter 6 has a conical cutting portion of the same angle as the valve seat and is provided with a plurality of flutes forming teeth 8 having radial cutting faces 9. The peripheries of the teeth are divided into portions 14 by means of a V-shaped spiral groove 12, the widths of the groove and the portions 14 being approximately equal and both substantially less than the width of the valve seat. In a tool which is to be rotated in a counterclockwise direction the spiral is arranged clockwise so that there will be a tendency for chips to be carried outwards towards the top of the valve seat. The shank 16 of the tool has a pilot 17 entering the valve-spindle guide 21 and the cutter may be secured on the shank by a slightly conical bore 18 or by a slight cone on the shank.
Patent GB-1385170-A (GB)
Title: Scanning microscope display apparatus
IPC: H01J37/22
Filed: 1973-05-08
Abstract: 1385170 Scanning particle microscopes AMERICAN OPTICAL CORP 8 May 1973 [8 May 1972] 21984/73 Heading H4F [Also in Division H1] A scanning electron or ion microscope comprises a field emission source 10 of a particle beam, a detector 22 supplying an image signal to a display tube 30 and control means 32 synchronously deflecting the microscope beam and the display tube beam in an interlaced pattern, wherein said pattern has an interlace ratio of at least three to one and the interlacing sequence is chosen to give an image on the display tube which appears to be substantially stationary. The field emission source includes an emission tip 11 and two anodes 12, 13. A suitable interlacing sequence is one which inhibits the occurrence of more than two succeeding field lines in next succeeding adjacent locations in the pattern, e.g. in a four-fold interlacing pattern the sequence 1, 4, 2, 3 or 1, 3, 2, 4. The detector 22 can be a scintillator responsive to reflected and secondary electrons.
Patent GB-941107-A (GB)
Title: Combined distribution valve and pump
IPC: F04D15/00
Filed: 1962-06-07
Abstract: 941,107. Central heating systems. REGULATOR A.G. June 7, 1962 [June 14, 1961], No. 21985/62. Heading F4U. [Also in Division F1] A combined circulation pump and mixing valve for a central heating plant comprises a housing having an inlet and two outlets, and a pump impeller for feeding liquid coming from the inlet, simultaneously to the two outlets in a distribution between them which can be varied by axially displacing the impeller. In the centrifugal pump shown, the impeller 23 has an elongated eye 33 which extends through a sleeve-like part 35 which preferably acts as a bearing. Two volutes 15, 17 are provided, separated by a flat wall 41 transverse to the pump axis, the cross-sections of the volutes changing to a truly circular shape at their outlets, which may be displaced from each other by 90 degrees, as shown, or any other angle. In the position shown, the impeller 23 discharges simultaneously through both volutes, the distribution between the two volutes being varied by axially displacing the impeller. In the two extreme positions, the impeller 23 discharges through one only of the volutes. The axial position of the impeller and its shaft may be adjusted by varying the current through a solenoid 43 acting on a core connected to the shaft. Alternatively, the displacement may be effected by mechanical, pneumatic or hydraulic means or directly by a manual control. The impeller may be adjustable to any position between the two extremes or to a few positions only, and may be retained in the adjusted position by a locking device. The inlet 13 is connected to the return pipe from the radiators, the volute 15 is connected to the boiler and the volute 17 is shunted to the main hot water supply pipe whereby the temperature of the hot water in the latter is controllable by axial displacement of the impeller, whereby cold return water is mixed into the hot water to the extent required.
Patent GB-1175792-A (GB)
Title: An Internal Combustion Engine having an Adjustable Air Inlet Connection
IPC: F02B27/02
Filed: 1968-05-09
Abstract: 1,175,792. I.C. engine induction passages. DR. ING. L.c.F. PORSCHE K.G. May 9, 1968 [May 20, 1967], No.22002/68. Heading F1B. [Also in Division G3] An air inlet connection 5 for an internal combustion engine is displaceable as a function of rotational speed by a hydraulic control apparatus so that an increase of speed shortens the effective length of the induction tract. Centrifugal weights 10 driven by a shaft 12 of the engine displace a slide valve 16 to cause follow-up movement of a housing 11 coupled to the connection 5 by a lever 33, pivoted at 32, and by a link 34. The lubricating system of the engine provides the motive fluid for the control apparatus. The inlet connection has brackets 6 slidably mounted on a rod 7 and may be secured by webs 8 to further connections. A cam and follower operated by a lever from the weights 10 may be used to actuate the rod 15 of the valve 16. To increase air velocity at low speeds, a cone-shaped moulded body is mounted on a fixed plate to project into the connection 5 and an injection nozzle may be mounted at the apex of the cone.