baber/WOPTO huggingface dataset:
Patent GB-1527255-A (GB)
Title: Hydraulic control valves
IPC: F15B13/02
Filed: 1975-12-11
Abstract: 1527255 Fluid-pressure servomotors SPERRY RAND CORP 11 Dec 1975 [10 Feb 1975] 50777/75 Heading G3P [Also in Division F2] A directional valve assembly 10 having a spool 16 for directing inlet fluid from port 24 to work ports 36 or 38 via ports 28 or 30 and load holding check-valves 32 or 34 is provided with a relief valve 50 or 52 between each work port and an exhaust 47 or 49 which is controlled by first 80 and second 97 pilot valves. Each pilot valve 80 acts to limit the maximum pressure at the respective work port whereas each pilot valve 97 is actuated by inlet pressure in the opposite work connected port 30 or 28 to allow return of fluid at its own work port 36 or 38 to exhaust 47 or 49 via the relief valve 50 or 52. Each valve 50 or 52 is of the spring-loaded spool type: the spool moving within a chamber 64 in communication with its work port via restriction 70 and having exits controlled by the first and second pilot valves. The pilot valve 97 is moved by a piston (94), Fig. 3, (not shown), connected with port 28 or 30 via passage 95 on one side and via passage 98, bore 114 and passage 99 on the other. If spool 16 is moved e.g. to the right to supply fluid to port 28 actuation is prevented of the second pilot valve 97 controlling the relief valve 50 which is then responsive to fluid-pressure at the motor port 36 and opens when fluid-pressure is great enough to move pilot valve 80 off its vent. At the same time, a shuttle valve 118 moves to block left hand passage 99 providing fluid imbalance on the left hand actuating piston (194) actuating the left hand second pilot valve 97, allowing the relief valve 52 to be actuated in response to pressure of fluid returning at motor port 38. Movement of spool 16 further to the right prevents fluid passing to either of ports 28 or 30 but opens a port 138 to inlet pressure which, via passages 116, 115, 114, actuates both second pilot valves 97 allowing either of the relief valves 50 and 52 to open and thus allowing the attached fluid motor to float free. Communication between the inlet port 24 and the valve inlet 20 is controlled by a compensator valve 100 moved rightwardly by fluid-pressure in port 24 and leftwardly in response to load on the motor being controlled by fluidpressure sensed in passage 116. With the spool 16 closed, the compensator valve 100 moves to connect the inlet 20 with a port 106, either to exhaust or to the next director valve in a bank of valves.
Patent GB-1275559-A (GB)
Title: Improvements relating to road barriers
Inventor: COOLEY MICHAEL JOSEPH EDWARD
IPC: E01F13/04
Filed: 1968-10-26
Abstract: 1275559 Road barrier; operating mechanism ROTAX Ltd 16 Sept 1969 [26 Oct 1968] 50913/68 Headings E1G and E2M A road barrier for controlling traffic comprises at least one vertically slidable member, e.g. a horizontal bar or a retractable vertical post, actuated by at least one linear electric motor. As shown, a horizontal bar 10 is rigidly secured to an armature 14 slidably mounted in a slotted vertical pillar 11, the armature co-operating with a flat or tubular linear electric motor 15 mounted in the pillar. A counterweight 18 is attached to the armature by a cable 16 passing over a pulley 17. When the bar has been raised to its "open" position it may be retained by a latch, e.g. a spring- loaded latch releasable by a solenoid in the motor circuit. Alternatively, the bar may be lowered into a channel in the ground (Fig. 5, not shown). The armature may be formed as a flat steel plate with an aluminium facing, or as a rod; it is preferably coupled to one or more vertical tubular dash-pots. In a further embodiment, the horizontal bar is secured to a flat motor which slides vertically in the pillar on guide rollers and co-operates with a stationary armature, which may be formed by the rear wall of the pillar. Current is supplied by conductor rails or a flexible cable, and the motor is coupled to a dash-pot and a counterweight. Instead of a horizontal bar, the barrier may comprise vertical posts retractable into housings sunk in the ground, linear electric motors being located in the housings, (Fig. 6 not shown).
Patent GB-516005-A (GB)
Abstract: 516,005. 2- Selenomercapto-4- hydroxypyrisinidines. KENDALL, J. D. June 16, 1938, No. 17947. [Class 2 (iii)] [Also in Group XX] In materials comprising a support and a light sensitive silver halide emulsion, the emulsion is stabilized by inclusion of either (1) 2-selenomercapto-4-hydroxy pyrimidine ; (2) N-substituted derivatives of this where the substituents are hydrocarbons substituted or not; (3) 5-and/or 6-substituted derivatives of either (1) or (2) above with hydrocarbon substituents ; or (4) salts, ethers, or selenoethers of the above. 2-seleomercapto-4-hydroxypyrimidine is prepared by condensing selenourea with ethyl sodioformylacetate. The 6-methyl, 5 : 6-dimethyl, 6-phenyl-, and 6- methyl-5-ethyl derivatives are prepared by condensing selenourea with ethyl sodiocetoacetate, ethyl sodiomethylacetoacetate, ethyl sodiobenzylacetate, and ethyl sodioethylacetylacetate respectively. The N-substituted derivatives are formed by condensing N- substituted selenoureas with #-keto-ethers. For example 3-ethyl-4-keto-6-methyl-2-selenotetrahydropyrimidine is prepared by condensing N-ethyl selenorurea with ethylacetate in the presence of sodium. Specifications 452,043 and 484,595, [both in Group XX], are referred to.
Patent GB-1210672-A (GB)
Title: Porous expanded articles of styrene polymer material
IPC: C08J9/00
Filed: 1967-11-16
Abstract: 1,210,672. Porous shaped articles of styrene polymers. MONTECATINI EDISON S.p.A. 16 Nov., 1967 [18 Nov., 1966], No. 52281/67. Headings C3C, C3G and C3P. Porous shaped articles of a styrene polymer, viz. a homopolymer of styrene, a copolymer of styrene with other monomers and containing at least 50% by wt. of styrene and/or derivatives thereof or a graft copolymer of styrene, are made by extruding the polymer containing 1-20% by wt. of one or more blowing agents in the presence of 0À1-10% by wt. of at least one nucleating agent which is an organic homo- or co-polymer of an unsaturated monomer containing at least one carboxylic acid or anhydride groups. In the example, polystyrene in bead form and containing petroleum ether is extruded using as nucleating agents a copolymer of 2-ethylhexyl acrylate and acrylic acid with optionally sodium bicarbonate; comparative tests used as nucleating agents, citric acid with optionally sodium bicarbonate, and potassium metasilicate.
Patent GB-1124968-A (GB)
Title: Improvements in, and a method of making, container seams
IPC: B21D51/32
Filed: 1965-12-10
Abstract: 1,124,968. Scanning. AMERICAN CAN CO. 10 Dec., 1965 [11 Dec., 1964], No. 52448/65. Heading B3J. [Also in Division B8] A method of forming a seam between flanges 16, 28, Fig. 1 (not shown), on two members, e.g. the body 24 and end closure 12 of a container, comprises forming a curl (22) in flange 16, positioning the flanges in adjacent relation, curling them inwardly, Fig. 2 (not shown), and finally forming the curl into a closed hem 34. The container may be formed of hard, low ductility tinplate, and the flange 16 may be coated with a latex-based sealing material 30 or a foamed plastisol. The seam may be formed by contoured rolls.
Patent GB-1094575-A (GB)
Title: The production of a strong magnetic field pulse
IPC: H02K39/00
Filed: 1964-12-24
Abstract: 1,094,575. Electromagnets; superconductors; transformers. SIEMENS - SCHUCKERTWERKE A.G. Dec. 24, 1964 [Dec. 24, 1963; July 25, 1964], No. 52484/64. Headings H1K, H1P and H1T. [Also in Division H3] A strong magnetic field pulse is generated in a winding which is connected to a secondary winding magnetically coupled to a superconductive primary winding when the latter changes to its normally conducting state. Sections of the primary winding, e.g. adjacent turns, may be connected together through resistors having a value at least one order of magnitude lower than the resistance value of the bridged portion of winding in its normal state to give rapid transition. The construction of the apparatus comprises primary winding 1 lying between axially slit metal jackets 15 which are enclosed in cylinder 16 made of nickel-chromium. Liquid helium flows through cylinder 16 by way of ducts 17, 18 and the whole assembly is enclosed in a further enclosure 20 which has water flowing through it by way of ducts 21, 22. A layer 23 of thermal insulating material surrounds enclosure 20 and supports the secondary winding 2. The conductors 1 are surrounded by insulating material which can be discontinuous at points around each turn and these discontinuities are filled with resistance material so that a quicker speed of transition is obtained, alternatively the bare turns of the winding may be embedded directly in powdered resistance material having a high coefficient of resistance. If the secondary winding is superconductive then provision for cooling the winding before transition may be made. The device is stated to be useful in reflector machines where pulse weakening of a magnetic field is required to compress the plasma and the output winding flux is used to buck the flux in a superconducting coil.
Patent GB-1125130-A (GB)
Title: A tube for grouting into bore holes drilled in earth
IPC: E21B17/00
Filed: 1965-12-10
Abstract: 1,125,130. Boring earth; wells. STABILATOR A.B. 10 Dec., 1965 [22 Dec., 1964], No. 52612/65. Heading E1F.  A tube for cementing into a borehole has apertured walls for the outward flow of cement, the apertures being closed by resilent, preferably metallic, flaps on the outside of the tube. The tube may also be used for drilling the borehole.
Patent GB-1189249-A (GB)
Title: Improved Electrical Circuit Breaker Device
Inventor: PEEK HENRY LAWRENCE
IPC: H01H33/02
Filed: 1968-11-06
Abstract: 1,189,249. Mounting vacuum switches. ALLIS-CHALMERS MFG. CO. 6 Nov., 1968 [14 Nov., 1967], No. 52630/68. Heading H1N. One or more circuit breakers 14 (e.g. vacuum switches) are mounted within a tubular insulator 12 about which is mounted a current transformer 16, the transformer being supported from a base 20, so as to support the insulator, and an insulating operating member 70 extending from one end of the insulator 12 to the base 20. The centre part of the insulator is thickened and formed with grooves 26; the transformer is embedded in solid potting compound which fills the grooves 26 and thus locates the transformer rigidly. Metal end-plates 28, 30 are clamped to insulator 12 by rods 32 and one of them supports a vacuum switch 14 and an insulating casing 42 containing a linkage 66 coupled to operating rod 70 which is itself enclosed in an insulating tube 72. In a modification (Fig. 2, not shown), a second vacuum switch is supported by a plate gripped between the ends of lining tubes (88, 90) inside the insulator and operating by a rod (98).
Patent GB-1484678-A (GB)
Title: Computers
IPC: G06F12/02
Filed: 1974-12-06
Abstract: 1484678 Digital data processing TELEFONAKTIEBOLAGET L M ERICSSON 6 Dec 1974 [13 Dec 1973] 52941/74 Heading G4A Digital data from a central processing unit CE is written into a data memory DM, the data being normally written into a first memory field, e.g. DF1, but being written into both memory field DF1 and into a second memory field, e.g. DF2, if the write operation interrupts a relocation program transferrring data from field DF1 to field DF2. The address of data to be written into field DF1 is stored in a register ADR, and is indexed to obtain the corresponding address of field DF2 by information stored in a register DIF, the latter address being obtained from an adding circuit ADD. A gate device ADG determines, in response to a signal on a line DOC, whether field DF1, or field DF1 and field DF2 are to be written into in response to a single write command on a line DSC. Writing into field DF2 may follow or precede writing into field DF1. Such writing is carried out by pulse generators PG1, PG2, flip-flops FF1, FF2, a timing circuit FK and an OR gate EG. The invention may be applied to a computer-controlled telecommunication system.
Patent GB-1057510-A (GB)
Title: Rear axle arrangements for motor vehicles
IPC: B60G9/00
Filed: 1965-12-16
Abstract: 1,057,510. Vehicle suspensions. ADAM OPEL A.G. Dec. 16, 1965 [Dec. 23, 1964; May 31, 1965], No. 53396/65. Heading B7D. A rigid live axle suspension includes a pair of guide arms 11, 12, resiliently mounted in the vehicle at their forward ends to allow pivotal movement about vertical and longitudinal axes and each having a half bearing support 23, for the rear axle, completed by a bearing cover 24 secured by a pair of bolts, the axle connections including rubber sleeves 25 having lateral annular flanges 26 and 27. Cantilever brackets comprising webs 35 and 36 flanking each guide arm and a web 37 forming a lever support for a helical spring 46 are welded to the axle tubes 3 and 4. A bolt 38 mounted in a rubber/metal bushing 40 affords a connection between the bracket webs 35, 36 and the guide arm and rearward extensions of the brackets provide mountings for vibration dampers 47 and 48. A lateral guide arm 28 is resiliently connected to the body at one end and to the guide link 12 at the other. The vibration dampers include resilient connections to the body at their upper ends. In a modification, Fig. 2 (not shown), the cantilever brackets extend downwardly and the resilient connections with the guide arms are below the axle. The resilient connection includes a kidney-shaped bolt (82) and cavities (87 and 88) are formed in the bush (84) in front of and behind the bolt. In a modification to this resilient connection, Fig. 8 (not shown), a kidney-shaped shank (117) of the connecting bolt is sandwiched between pre-stressed rubber elements (118 and 119). In Fig. 2, the suspension springs extend from below the axle, and in a modified construction, Fig. 9, al, o not shown. the springs are wholly located above the axle.
Patent GB-1294466-A (GB)
Title: Apparatus for injecting gas into liquids
IPC: C02F3/20
Filed: 1969-11-04
Abstract: 1294466 Apparatus for injecting gas into liquids VOGELBUSCH GmbH 4 Nov 1969 [20 Nov 1968] 54025/69 Heading B1C  Apparatus for injecting gas into liquids, see Fig. 1, comprises a vented container 12, a tubular member 13 depending into the container, a pump 3 arranged to circulate liquid from the container through the tubular member from top to bottom thereof, and at least one fixed hollow member I disposed in the tubular member through which gas is introduced into the liquid flowing through the tubular member. A deflector 17 may be arranged beneath the lower end of the tubular member. Each hollow member may include a heat-exchanger portion 1" arranged above the portion 1' through which gas is introduced into the liquid. The tubular member may be provided with apertures 14 through which gas in the container 12 may be induced into the liquid flowing through the tubular member. In a modification, see Fig. 5, the circulating pump 39 is arranged to draw liquid from vented container 30 through a rise pipe 31 disposed within tubular member 32 and pump it past hollow members 40 arranged radially in the upper part of the tubular member. The lower end of rise pipe 31 may be flared so as to act as a deflector and an annular suction, aperture 44 may be arranged in the tubular member. In another modification, Figs. 7, 8 (not shown), circulation of liquid is effected by means of an axial flow pump arranged in the upper end of a rise pipe disposed within the tubular member, and gas is injected through a hollow member concentrically surrounding the rise pipe in the upper part of the tubular member. Each of the apparatuses may be used for the aeration of nutrient media for the cultivation of microrganisms.
Patent GB-1263838-A (GB)
Title: Cleaning arrangement for an ink jet printer
Inventor: RUSSEN ALBERT
IPC: G06K15/10
Filed: 1970-11-13
Abstract: 1,263,838. Pens for recording instruments. STANDARD TELEPHONES & CABLES Ltd. 13 Nov., 1970, No. 54096/70. Heading B6P. A cleaning arrangement for an ink jet printer pen includes two fluid reservoirs 4 and 5, one for the ink and one for the cleaning fluid. Each reservoir is pressurized and connected to the pen via a two-way tap 3.
Patent GB-1408267-A (GB)
Title: Expandable polymers of vinylidene aromatic compounds
IPC: C08J9/224
Filed: 1971-11-22
Abstract: 1408267 Coated foamable particles SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 20 Nov 1972 [22 Nov 1971] 54139/71 Heading B2E [Also in Division C3] Particles of an expandable polymer of a vinyl or vinylidene aromatic compound containing a vaporisable expanding agent of b.p. below 100‹C and which has no solvent action on the polymer, are coated with (a) a waterinsoluble ester of glycerol and a C 10-40  fatty acid and (b) an inorganic finely-divided solid. In the examples polystyrene expandable beads are coated with a mixture of finely-divided magnesium carbonate, olive oil, lauric diethanol amide, poly-N-vinyl pyrollidone (as an adhesive) and isopropanol, the beads are dried, pre-expanded with steam and then moulded in a steam-heated mould.
Patent GB-1166295-A (GB)
Title: Mounting Structure of Fan Blade Wheel.
IPC: F16D1/096
Filed: 1966-12-05
Abstract: 1,166,295. Securing fan blade wheels on shafts. MITSUBISHI DENKI K.K. 5 Dec., 1966 [3 Dec., 1965], No. 54384/66. Heading F2U. The fan blade wheel 4 of an electric fan is mounted on a shaft 22 by an axially split collet 10 having a conical outer surface at one end cooperating with a corresponding surface on the wheel 4 so that the collet is contracted on to the shaft when it is drawn axially into the wheel by a spinner 20 engaging a screw stud 11 on the collet. The screw stud 11 may alternatively be formed on the spinner and be received in a screw threaded bore in the collet. A stop ring 19 on the collet prevents complete withdrawal thereof from within the wheel. The collet, as shown, may be splined to the wheel, or, Figs. 7, 8 (not shown), the collet and wheel may be of complementary polygonal shape. The fan blade wheel 4 is of synthetic resin reinforced by an internal metallic sleeve 9.
Patent GB-1202400-A (GB)
Title: Process for the preparation of cyclic nitrile sulfite adducts
IPC: C08G63/91
Filed: 1967-12-01
Abstract: 1,202,400. Cyclic nitrile sulphite derivatives. SINCLAIR RESEARCH Inc. 1 Dec., 1967 [21  Dec., 1966], No. 54858/67. Heading C2C.  Cyclic compounds of the general formula  where A is a hydrocarbon radical which may contain substituent groups or atoms other than carbon in the main or side chain, and n is an integer of 0 to 4, are prepared by reacting at least a stoichiometric amount of sulphur dioxide and a nitrile oxide compound having the structure Gaseous or liquid sulphur dioxide may be used, preferably in a large excess. An inert solvent is preferably used and the reaction may be carried out at pressures above or below atmospheric. The products are useful intermediates.
Patent GB-1122229-A (GB)
Title: Purification of lactides
IPC: C07D319/12
Filed: 1965-12-28
Abstract: High molecular weight polylactide thermoplastics are produced by a process comprising heating a purified lactide (see Division C2) under nitrogen to 103 DEG  C. until all of the lactide is melted, and then adding a solution containing 25% diethyl zinc and 75% heptane.  The heating is continued with stirring for one hour and the polymer then removed.  The examples describe the preparation of polymers from lactide having inherent viscosities of 1.98, 2.43, 2.62 and 1.95.ALSO:Lactides are purified by crystallization under anhydrous conditions from benzene or a mono-, di- or tri-(C1- 4-alkyl) benzene.
Patent GB-1172225-A (GB)
Title: Ventilation Means for Livestock and other Buildings
Inventor: GEDGE SYDNEY HERBERT
IPC: F24F13/12
Filed: 1965-12-30
Abstract: 1,172,225. Ventilating buildings. R. A. LYCETT (CONSTRUCTIONAL ENGINEERS) Ltd. 30 Dec., 1966 [30 Dec., 1965], No. 55172/65. Heading F4V. Ventilation means for an agricultural, horticultural or livestock building comprise a shutter unit guided for sliding rectlinear movement relative to air apertures in a wall or roof of a building and operated by a reversible motor mounted on the building structure. As shown in Figs. 2 and 3, spaced shutters 1 coupled by a bar 2 control vertical apertures 4 in a side wall of the building. The shutters are operated by an electric motor 7 through belt gearing 9 and screw-and-nut mechanism 10, 14, the nut 14 being secured to one of the shutters and the screw 10 and motor 7 being supported on the fixed structure. Alternatively, the motor may operate through rack-and-pinion mechanism, or through an eccentric or through lever-and-pulley mechanism. The electric motor may be replaced by an hydraulic or pneumatic motor and may be controlled by a thermostat, humidistat or a time switch. Specification 904,731 is referred to.
Patent GB-1107689-A (GB)
Title: Improvements in electric toaster with heater tensioning means
IPC: A47J37/08
Filed: 1966-12-12
Abstract: 1,107,689. Mounting heating elements in electric toasters. GENERAL ELECTRIC CO. 12 Dec., 1966 [30 Dec., 1965], No. 55483/66. Heading H5H. The heater wire 31 of an electric toaster 10 is kept under tension to accommodate its expansion on heating. The heating unit 28 has a support 29 mounting the heater wire 31 and a leaf spring 32 and movable relative to a support 30, the wire 31 extending in serpentine fashion between the supports 29, 30, and being, tensioned by the spring 32 (see also Figs. 2-5, not shown). Several features are similar to those described in Specification 1,032,388.
Patent GB-1359347-A (GB)
Title: Process for the production of1-nitroanthraquinone
IPC: C09B1/06
Filed: 1971-11-30
Abstract: 1359347 1-Nitroanthraquinone SANDOZ Ltd 30 Nov 1971 [22 Dec 1970 10 June 1971 27 July 1971] 55572/71 Heading C2C 1-Nitroanthraquinone is prepared by reaction of anthraquinone with nitric acid of at least 90% concentration at a temperature in the range -40-+35 C., the molar ratio of acid to anthraquinone being at least 20 : 1. The reaction may be carried out continuously or batchwise and the product may be precipitated by dilution of the reaction solution with ice/ water. The mother liquor after separation of the crystalline product may be returned to the reaction.
Patent GB-1495009-A (GB)
Title: Injection moulding apparatus
IPC: B29C45/77
Filed: 1974-12-23
Abstract: 1495009 Injection moulding machine control GENERAL ELECTRIC CO 23 Dec 1974 [26 Dec 1973] 55583/74 Heading B5A [Also in Division G3] An injection moulding machine has a ram 10, drive means 22 for rotating, and hydraulic means 30, 32 for advancing and withdrawing the ram, and a control system comprising position sensing means 58 for producing a signal indicative of ram position, means 51 for producing a first reference signal, means 55 for producing an error signal representing the difference between the signals from the position sensing means and the reference means, first control means 66 for causing hydraulic pressure applied to the ram to decline from a higher to a lower value, second control means 67 responsive to the error signal for terminating operation of the drive means 22, and third control means 68 responsive to the error signal for establishing a point of maximum withdrawal of the ram. The ram 10 is advanced by means of a piston 32 in a cylinder 30 under fluid pressure supplied by a pump 36 through a valve 38. Additional control over this pressure is provided by a relief valve 40. A second pump 44 with a second relief valve 48 control non-rotational pull back of ram 10 subsequent to withdrawal due to ram rotation. The first control means 66 comprises a comparison circuit which receives the error signal and the ram position signal. In another embodiment the first control means comprises a timer.