baber/WOPTO huggingface dataset:
Patent GB-1128869-A (GB)
Title: Production of glycol esters
IPC: C07C69/82
Filed: 1967-04-04
Abstract: 1,128,869. Hydroxy ethyl esters of benzene dicarboxylic acids. GELSENBERG BENZIN A.G. 4 April, 1967 [9 April, 1966], No. 15412/67. Heading C2C. Mono- or bis-hydroxyethyl esters of benzene dicarboxylic acids are prepared by reacting a benzene dicarboxylic acid in the presence of water and, as catalyst, 5 to 25 mole per cent (based on the acid) of a quaternary ammonium salt and/or quatemary ammonium base, with ethylene oxide, the reaction being carried out in a solvent or suspension agent for the acid and at atmospheric pressure or at an excess pressure of 1 to 25 kg./cm.<SP>2</SP> The process is preferably effected at 40‹ to 75‹ C. and suitable solvents or suspension agents are polar compounds. In examples mixtures of mono- and bis-hydroxyethyl terephthalates are obtained by reacting ethylene oxide with terephthalic acid in presence of benzyltrimethylammonium hydroxide or anion exchange resins as catalysts.
Patent GB-291110-A (GB)
Title: Process for simultaneous low frequency and carrier frequency telephony
IPC: H04B3/00
Filed: 1928-05-25
Abstract: 291,110. Siemens & Halske Akt.,-Ges. May 27, 1927, [Convention date]. Loading circuits to improve transmission.-A cable is lightly pupinized and has a cut-off frequency of say 6000 cycles so that it may be utilized for simultaneously carrying speech frequencies N lying within a range of 300 to 2400 cycles and the lower side-band frequences of a modulated carrier wave. The carrier frequency h must be from 15 to 20 per cent below the cutoff frequency, and is eliminated by known means, leaving a side-band T lying within the frequency scale 2600-4700 cycles. The channels N and T are separately compensated for distortion by known means, either at the amplifying stations or by artificial networks at the terminal points. Fig. 4 shows a four-wire connection for two-way working. The .two messages are separated by suitable filters S1, S2 and, after passing through equalizing circuits A, are fed into the transmission lines, which are provided with one-way repeaters adapted to neutralize line-attenuation over a frequency range of approximately 300 to 5000 cycles.
Patent GB-164335-A (GB)
Title: Improvements in the ammonia-soda process
IPC: C01D7/18
Filed: 1921-06-03
Abstract: Sodium bicarbonate; ammonia; alkali metal compounds, obtaining from complex silicates.  In the ammonia-soda process, ammonia is regenerated from the ammonium chloride by means of leucite instead of lime.  The ammonium chloride and finely-ground leucite are heated to a suitable temperature under pressure, for instance in an autoclave. Potassium chloride and aluminium silicate are obtained as by-products.ALSO:In a modified ammonia-soda process, the resulting ammonium chloride is heated under pressure with finely-ground leucite, when aluminium silicate and potassium chloride are obtained as by-products.
Patent GB-761280-A (GB)
Title: Improvements in and relating to methods of extracting sodium from amalgams
IPC: C22C3/00
Filed: 1954-05-25
Abstract: 761,280. Extracting sodium from amalgams. SOLVAY & CIE. May 25, 1954 [June 22, 1953], No. 15448/54. Class 82(1) Sodium is recovered from a dilute sodium-mercury amalgam by first raising the sodium concentration of the dilute amalgam to at least 0.39 gram. atom Na/ gram. atom (Na + Hg), and then supplying the concentrated amalgam so obtained to the top of a fractionating column operating at an absolute pressure between 0.36 and 26 m.m. mercury and at a base temperature which is equal to or greater than a minimum value which is a linear function of the sodium concentration of the amalgam supplied, the minimum value being 600‹C. at a sodium concentration of 0.39 gram. atom Na/gram. atom (Na + Hg), and 400‹C. at a sodium concentration of 0.48 gram. atom Na/gram. atom (Na + Hg). The operating pressure of the fractionating column corresponds to an operating temperature range of 400-600‹C. so that the column may be operated under conditions corresponding to any point within the shaded area of Fig. 1. The dilute amalgam is preferably obtained by electrolysis of an aqueous solution of a sodium salt, e.g. sodium chloride, in a mercury cathode cell. In one arrangement of apparatus described for carrying out the process, the sodium concentration of the dilute amalgam is raised to the desired value in a pair of stills in series and this concentrated amalgam is passed to the fractionating column the distillate from the first still being returned to the electrolytic cell and the distillates from the second still and the fractionating column being recycled to the foot of the first still. In another arrangement of apparatus, the sodium concentration of the dilute amalgam is raised by a single film evaporator and the distillates from the film evaporator and the fractionating column are recycled to the electrolytic cell.
Patent GB-1500436-A (GB)
Title: Nuclear reactor coolant channels
IPC: G21C3/322
Filed: 1976-04-09
Abstract: 1500436 Nuclear reactor coolant channels UNITED KINGDOM ATOMIC ENERGY AUTHORITY 9 April 1976 [15 April 1975] 15509/75 Heading G6C A nuclear reactor two-phase coolant channel 1 wherein water enters at the bottom and a water-steam mixture exits at the top contains a plurality of spaced apart axially extending parallel fuel rods 5, and to prevent undesirable transverse flow oscillations in the coolant, axially extending radial baffles 6 are provided. Provision of baffles is particularly significant where there is an even number of outermost rods. In another embodiment (Fig. 4, not shown), a baffle takes the form of a transverse diametral partition, and may be formed by radial, axially extending fins on those rods lying along a diameter.
Patent GB-676839-A (GB)
Title: Improvements in displacement engines of the rotary screw wheel type
IPC: F04C18/16
Filed: 1950-06-23
Abstract: 676,839. Meshing-screw compressors and engines. AKTIEBOLAGET LJUNGSTROMS ANGTURBIN. June 23, 1950 [July 11, 1949], No. 15718/50. Class 110(ii) The invention deals with a compressor or engine of the type shown in Specification 627,162 comprising one rotor having helical lands of convex cross-section lying substantially outside the pitch circle and a co-acting rotor with lands of generally concave cross-section lying substantially within the pitch circle. The helical or cam angle of the male rotor, i.e. the smaller angle between the longitudinal axis of the rotor and the direction of the tops of the threads, exceeds 50 degrees, and the male rotor has three or more threads, while the wrap angle, i.e. the tota angular displacement of the thread along the rotor length lies between 200 degrees and 325 degrees in order to pro vide an enlargement of the inlet and outlet openings o: the casing relatively to the stroke volume. The male rotor has a length to diameter ration lying between 0.5 anc 1.1. Fig. 1 shows one arrange ment of compressor with male and female rotors 16, 18 inlet and utlet ports 44, 46 shaft seals 32, 34, 36, 38, anc rotor synchronizing wheels 40 42 which ensure clearances between the co-operating lands and grooves. The inlet and outlet ports and the edges of the male and female threads may all have their edges rounded off. The female and male threads are rounded off as shown in Figs. 6 and i respectively. The nose portions 64, 66 are directed in the direction of rotation of the thread. Fig. 13 shows a twostage compressor having lowpressure and high-pressure stages 166, 168 respectively and an intercooler 156. Air enters the L.P. compressor through an inlet 152 and is delivered to the intercooler through an inlet 154. The H.P. compressor has inlet and outlet ports 158, 162. Outer bearings 170, 172 are provided but no central bearings. A seating device 174 is placed centrally. The H.P. compressor has a short rotor with length to diameter ratio of 0.5 to 0.7 with a moderate wrap angle and the L.P. rotor has a ratio of 1.5 to 2 and a wrap angle preferably greater than 250 degrees. The axial forces are approximately balanced. In a modified plant, Fig. 14 (not shown), the intercooler is dispensed with. Fig. 15 shows a gas power plant in which a compressor 200 and engine 202 have a rotor 204-206 supported on bearings 208, 210. Shaft seals 214, 216 are provided. Compressed air passes through apertures 220 in the shaft 222 and apertures 224 in the casing into the cooling systems 226 and 228. The warmed air then flows through a duct 230 to the combustion chamber 232 and enters the engine through an inlet 236. Exhaust gases are discharged through an outlet 238. The high-pressure ends of the compressor and the engine are adjacent, the axial and radial forces on the rotors being approximately balanced . U.S.A. Specification 2,457,314 also is referred to.
Patent GB-1169076-A (GB)
Title: A Clamping Collar
Inventor: TONNELLINE CHARLES FELIX
IPC: F16B2/06
Filed: 1967-04-05
Abstract: 1,169,076. Clamps. C. F. TONNELLINE. 5 April, 1967 [8 April, 1966], No. 15736/67. Heading E2B. A clamping collar for tubes or the like comprises at least three elements 1, 2, 3, having arcuate bearing surfaces, connected together by clamping means comprising an integral extension 10 of each element which is threaded so that after being passed through a hole in the adjoining element, it can receive a nut 11. The arcuate bearing surfaces are formed in inwardly projecting walls of each element and may have a radius smaller than, equal to or greater than that of the tube or the like on which the collar is to be clamped.
Patent GB-945654-A (GB)
Title: Improvements in or relating to high voltage supply circuit arrangements
Inventor: HEIGHTMAN ANTHONY NORMAN
IPC: H02M3/335
Filed: 1962-04-25
Abstract: 945,654. Automatic control of voltage. MARCONI CO. Ltd. Nov. 15, 1962 [April 25, 1962], No. 15742/62. Heading G3R. In a high-tension supply arrangement, alternating current at a suitable frequency is generated by an oscillator including a transistor VT0 and a resonant transformer connected as shown, an output being derived from a secondary winding S1 and amplified by a transistor VT1, operating in class C, self-biased by the voltage across a reservoir condenser C1 and supplying an output through a transformer having a primary P2 and secondaries 152-452, the secondary 252 being resonant and supplies an output terminal O through a voltage double V1, V2. The secondary 152, having a voltage proportional to that at O, is connected through a rectifier MR to control the current through a regulating transistor VT2 by opposing a set bias from a potentiometer RV so as to maintain constant the output'voltage at O by varying the voltage across the reservoir condenser C1. A resistance R1 limits the dissipation in transistor VT2 and hunting is prevented by a phase correction circuit R2, C2. It is stated that a regulated alternating input can be obtained by the omission of rectifiers V1, V2.
Patent GB-209022-A (GB)
IPC: B60L50/15
Filed: 1923-06-20
Abstract: 209,022. Erste Br³nner Maschinen- Fabriks-Ges. Dec. 27, 1922, [Convention date]. Petrol-electric vehicles.-In a turbine locomotive with electrical transmission of power to the axles, the electromotor m may be connected to the generator g driven by the turbine t or to a current supply network n or to both simultaneously so that excess power produced by the turbine can be given up to the network and peak demands met therefrom. In a modification a single electrical unit is used and is adapted to run as a motor when re-coupled from the turbine and supplied with current from the network. When the unit is coupled to the turbine, the axles are driven from the shafts of the turbine, or the unit and current generated is supplied to the network.
Patent GB-1472978-A (GB)
Title: Process for forming a relief image
IPC: G03B27/10
Filed: 1975-04-29
Abstract: 1472978 Relief image W R GRACE & CO 29 April 1975 [10 April 1974] 16026/74 Heading G2A  A relief image is produced by applying a layer of photocurable material to a support, transporting the support in an arcuate path, together with an image-bearing transparency, past light emitted from a narrow slot, and removing uncured material from the support. The support may be in the form of a cylinder or metal web. The latter may be cut after image production. Collimated U.V. light may be employed. Uncured material may be removed by washing. As shown, photopolymer is applied to a cylinder 1 by a doctor blade 3 and activated by a fluorescent lamp 5. After one revolution of cylinder 1, a negative 7 carried under vacuum by a glass plate held by guides 8 passes together with the cylinder under a light source 10 while ionized air from nozzles 9 is blown through a gap between negative 7 and cylinder 1.
Patent GB-1560377-A (GB)
Title: Method of producing 2,4 - dioxohixahydro - 1,3,5 - triazine
IPC: C07D251/10
Filed: 1978-04-24
Abstract: 2,4-Dioxohexahydro-1,3,5-triazine is obtained, avoiding unwanted by-products, by reacting formaldehyde, or compounds which donate formaldehyde, with urea. The urea is used in an amount such that the molar ratio of formaldehyde to urea in the reaction mixture is from 1:2.1 to 1:4.5. Reaction is carried out from 100 to 300 DEG C. The compound is used, for example, for the preparation of compounds having bactericidal and fungicidal properties, and for the preparation of polymers having high thermal stability. It is also suitable as a slow-acting nitrogen fertilizer.
Patent GB-561406-A (GB)
Title: Improvements in or relating to contacts for electrical switches, fuses, fuse switches, cut-outs, circuit breakers and the like
IPC: H01H1/42
Filed: 1942-11-16
Abstract: 561,406. Switch contacts. FOSTER TRANSFORMERS & SWITCHGEAR, Ltd., and LOWE, R. G. Nov. 16, 1942, No. 16183. [Class 38 (v)] A pair of co-operating contacts comprises an outer contact of two strips 2 and an inner 1 sliding between them, the inner being wedge shaped on its entering face and then turning substantially parallel, the outer strips being so shaped that, when engaged, they conform to the shape of the inner contact. These strips 2 may be reinforced when fully home by springs 11 on their outer sides but carried by the inner contact 1. Specification 561,278 is referred to.
Patent GB-145055-A (GB)
Title: Manufacture of trisazo-dyestuffs capable of being diazotised
IPC: C09B31/22
Filed: 1920-06-15
Abstract: Trisazo dyes are obtained by coupling a diazosulphonic acid of the benzene or naphthalene series with a middle component, rediazotizing and coupling with a -naphthylamine or its 6- or 7-sulphonic acids, again diazotizing and coupling with 2 : 8 : 6-aminonaphthol sulphonic acid in alkaline solution.  According to examples, the following components are employed:-metanilic acid, a -naphthylamine, 1-naphthylamine-6- or -7-sulphonic acid or a mixture thereof, and 2 : 8 : 6-acid; 2-naphthylamine-4 : 8-disulphonic acid, 3-amino-4-cresol methylether, 1-naphthylamine -6- or -7- sulphonic acid, and 2 : 8 : 6-acid; 2-naphthylamine-4 : 8-disulphonic acid, 1-naphthylamine-6- or -7-sulphonic acid, 1-naphthylamine -6- or -7- sulphonic acid, and 2 : 8 : 6-acid. The products dye cotton, and may be diazotized on the fibre and developed, e.g. with b -naphthol or m-toluylenediamine, giving grey shades.  Specification 5112/92 is referred to.ALSO:Trisazo dyes are obtained by coupling a diazosulphonic acid of the benzene or naphthalene series with a middle component, rediazotizing and coupling with a -naphthylamine or its 6- or 7-sulphonic acids, again diazotizing and coupling with 2 : 8 : 6 -aminonaphthol sulphonic acid in alkaline solution.  According to examples, the following components are employed: metanilic acid, a -naphthylamine-6- or 7-sulphonic acid, 1 naphthylamine or a mixture thereof, and 2 : 8 : 6-acid; 2-naphthylamine-4 : 8-disulphonic acid, 3-amino-4-cresol methylether, 1-naphthylamine-6- or 7-sulphonic acid, and 2 : 8 : 6-acid; 2-naphthylamine-4; 8-disulphonic acid, 1-naphthylamine -6- or 7-sulphonic acid, 1-naphthylamine-6-or 7-sulphonic acid, and 2 : 8 : 6-acid.  The products dye cotton and may be diazotized on the fibre and developed, e.g. with b -naphthol or m-toluylenediamine, giving grey shades.  Specification 5112/92 is referred to.
Patent GB-1464331-A (GB)
Title: Isomerization of isopropylnaphthalene alkylate mixtures
IPC: B01J29/00
Filed: 1975-04-18
Abstract: 1464331 Isomerizing isopropylnaphthalenes AMERICAN CYANAMID CO 18 April 1975 [1 May 1974] 16229/75 Heading C5E The content of #-isopropylnaphthalene in a mixture of napthalene, α and #-isopropylnaphthalenes and diisopropylnaphthalenes (having an equivalent naphthalene : propylene ratio of from 1 to 10) is increased by contacting the mixture with a rare earth metal-exchanged synthetic crystalline Y type zeolite at 200- 325 C. 0À1-4 hr.<SP>-1</SP> space velocity and 200-500 p.s.i.g. The starting mixture is such as is produced by the alkylation of naphthalene with propylene using a zeolite Y catalyst.
Patent GB-1466355-A (GB)
Title: Attachments
IPC: G09F3/12
Filed: 1974-04-11
Abstract: 1466355 Attaching labels DENNISON MFG CO Ltd 11 April 1974 [12 April 1973] 16294/74 Heading B8F [Also in Divisions A3 D1 and E2] In an assembly of a plurality of connected attachments, each attachment comprises a filament 16 and a pair of object-penetrating parts 12, 14 one at each end of the filament, the assembly including a mounting element 18 and frangible connecting means between the element and parts 12, 14 respectively whereby both ends of each attachment are connected to the element. The assembly may be integrally moulded from nylon. As shown, an object 34, Fig. 5, is formed with an opening 36 by means of the needle of an attaching device (22, Fig. 3, not shown), which inserts the parts 12, 14 through the aperture to form a loop. Two objects (34, 38, Fig. 6, not shown), may be connected. The device may be used for attaching labels to articles.
Patent GB-805206-A (GB)
Title: Improvements in disc brakes for automobiles
IPC: F16D65/38
Filed: 1956-05-25
Abstract: 805,206. Cooling brakes. CITROEN S.A., A. May 25, 1956 [May 26, 1955; May 24, 1956], No. 16318/56. Class 79(3) [Also in Group XXXIV] A disc brake on the front wheel of an automobile is cooled by the dynamic pressure created by the forward movement of the vehicle on the air in an air supply chamber 41, the air being evacuated therefrom by a conduit 40 so as to flow over the brake.
Patent GB-1267691-A (GB)
Title: Improvements relating to handling of material such as tobacco
IPC: B65B1/36
Filed: 1969-03-28
Abstract: 1,267,691. Feeding tobacco. SERVICE D'EXPLOITATION INDUSTRIELLE DES TABACS ET DES ALLUMETTES. 28 March, 1969 [29 March, 1968; 8 April, 1968; 12 Sept., 1968], No. 16372/69. Heading B8S. Tobacco is fed by endless belt 1 into hopper 8 and rests on fork 3, accumulating to form a required dose till it operates photo-cell 4. This causes fork 3 to retract to permit the tobacco to fall into casing 5 on top of a studded cylinder 6. The cylinder then rotates to discharge the dose of tobacco downwards till photo-cell 9 operates to cause fork 3 to advance and cylinder 6 to stop. The cycle then starts again. In Fig. 2, a blade wheel 13 is rotated by an endless drive system 16, 16<SP>1</SP> and doses of tobacco formed in quadrant chambers of the wheel are discharged downwardly. There may be a plurality of coaxially mounted blade wheels individually driven by endless devices, Fig. 3 (not shown). In Fig. 4, a blade wheel 33 is divided into quadrant chambers by semi-cylindrical shields 34, 35 and by radial walls. Doses of tobacco from the wheel are fed by a conveyer 36 into ducts 37-39.
Patent GB-612675-A (GB)
Title: Improvements in or relating to suspension fittings for electric lights
IPC: F21V21/00
Filed: 1946-05-30
Abstract: 612,675. Supporting lamps. WARDLE ENGINEERING CO., Ltd., and OGLEY, D. H. May 30, 1946, No. 16411. [Classes 75 (iii) and 75 (iv)] Suspension means for an elongated lamp 6 comprise a number of longitudinal links 7 fitted to the top of the lamp, each of which slidably engages hooks 11 on suspension chains 10 so that the distances between the vertical suspension chains 9 can be suited to various distances between ceiling joists, &c. The links 7 are pivotally secured to the lamp 6 by means of clips 8. A tube 12 and a cross piece 13 with hooks 14 may replace the chains 9, 10 or alternatively the crosspiece 13 may be secured direct to the ceiling. Single links may be secured direct to the ceiling. Single links may be fitted along the central longitudinal line of the lamp instead of pairs of parallel links 7.
Patent GB-862399-A (GB)
Title: Sealing means for preventing the ingress of air to the plunger space of a pump with a hydraulically plunger-controlled diaphragm
IPC: F04B43/067
Filed: 1958-05-22
Abstract: 862,399. Stuffing-box substitutes. SIGMA LUTIN, NARODNI PODNIK. May 22, 1958 [May 23, 1957], No. 16436/58. Class 122 (5). Sealing means for preventing the ingress of air to the plunger space 3 of an hydraulic plunger-controlled diaphragm pump comprises at least one packing-ring surrounding the plunger and a flushing ring 6 adapted to be supplied with liquid for wetting the surface of the plunger. As shown, the ring 6 is located between packing-rings 4, 7 which are axially compressed by a gland 9 and nut 10. The ring 6 is provided with a number of circumferentiallyspaced holes 21 which communicate through one or more pipes 17 with a container 16 from which the pump control liquid is supplied to the space 3 through a suction valve 14. Instead of using the pump control liquid for flushing, liquid for this purpose may be supplied from a separate container. In operation, liquid surrounding the ring 6 removes the air from the surface of the plunger. Several rings 6 may be located along the stuffing-box if desired.
Patent GB-583414-A (GB)
Title: Poultry batteries, laying cages and the like
IPC: A01K31/04
Filed: 1944-08-30
Abstract: 583,414 Poultry batteries. PATCHETT, E., Aug. 30, 1944, No. 16463. [Class 5 (ii)] [Also in Group XXX] Relates to a poultry battery of the type composed of tiers of cages from which droppings are removed by an endless conveyer belt passing beneath the cages. According to the invention a belt is associated with each double tier of cages, the belt being formed of chains to which are attached a plurality of plates, guide members being' provided for tilting the plates, so that the same surface of each plate is always uppermost during the travel of the belt beneath the upper and lower tiers of cages. In the form shown, cages 1 are provided with wire mesh bottoms 2 through which droppings may fall on to a conveyer belt formed of plates 12 attached to chains 10 by pivots 11. The chains pass over sprockets 9 to one of which is attached an operating handle 13. At the ends of their runs beneath the cages the plates pass between plates 18 and scrapers 17 whereby they are cleaned. As the plates pass over the lower sprockets, they strike against guides 16 which cause them to turn over about their pivots thus maintaining the same face uppermost throughout their travel. The plates may be detachable from the chains if desired.
Patent GB-1291714-A (GB)
Title: Improvements in protective encasements for radio-active pellets and the unpackaging of such pellets
IPC: B65B9/04
Filed: 1969-12-11
Abstract: 1291714 Packaging and unpackaging pellets KERR-McGEE CORP 11 Dec 1969 [11 Dec 1968] 16477/71 Divided out of 1,291,713 Heading B8C The description is substantially identical with that according to Figs. 1-8 of Specification 1,291,713 and also includes description of apparatus for unpackaging pellets. The claims are directed to a protective encasement containing a plurality of pellets and to a method of unpackaging such an encasement. As shown, sections 88, Fig. 8, of a belt consisting of upper and lower strips enclosing pellets, are formed by transverse seals 92, 94 and each section includes a border 96, Fig. 9, in the form of a continuous bubble which is slit at a station 78 of unpackaging apparatus, Fig. 7, where spot welds between pellets are also punched out. The upper strip is then removed at a station 82 and pellets are removed at a station 84. The empty lower strip is cut or rolled at a station 86 for accumulation or disposal. Specification 1,291,715 is referred to.