baber/WOPTO huggingface dataset:
Patent GB-1162260-A (GB)
Title: Production of 1,2-Dichloroethane
IPC: C07C17/156
Filed: 1966-12-16
Abstract: 1,162,260. Production of 1,2-dichloroethane. B. F. GOODRICH CO. 16 Dec., 1966 [17 Dec., 1965], No. 56413/66. Heading C2C. 1,2-Dichloroethane is produced by reacting ammonium chloride, ethylene and an oxygencontaining gas in the presence of a transitionmetal catalyst at above 250‹ C. The oxygencontaining gas may be pure oxygen, air or oxygen diluted with an inert diluent, e.g. nitrogen, helium, inert hydrocarbons and steam. The catalyst may be in the form of a fixed or fluidized bed and may comprise a transitionmetal compound supported on a carrier, e.g. silica, kieselguhr, fuller's earth, clay and alumina.
Patent GB-1256086-A (GB)
Title: Pneumatic control system for automatically cleaning an air filtering system
IPC: B01D46/04
Filed: 1968-11-28
Abstract: 1,256,086. Air-filtering systems. J. W. KICE; R. W. KICE and J. V. KICE [trading as K. B. ENG. CO.]. 28 Nov., 1968 [20 May, 1968], No. 56631/68. Heading BIT. [Also in Division F2] Sections of an air-filtering system, each having a plurality of filter bags 38, are automatically supplied in sequence, via conduits 52, with back-pulses of scavening air from a reservoir 48 by the sequential opening of rapid release valves 50. Control is by a pneumatic control system having corresponding sections A, B and C, each having a slide valve 56, 57 and 58 which valves are operated in turn. When slide valve 56 opens, air is supplied via conduits 150 and 142 to build up pressure in a resiliently-loaded piston valve 55, (Fig. 5, not shown), and at a pre-determined pressure, the latter operates to disconnect a conduit 157, connected to the reservoir, from a conduit 103. This allows a diaphragm valve 54 (Fig. 5, not shown) to open which, in turn, opens the rapid release valve 50 (Fig. 4 or 11, not shown). Air pressure in the conduit 51 associated with the filter bags of section A is also applied through a conduit 146 to slide valve 56 to close that valve and through a conduit 158 to slide valve 57 to open that valve so as to produce operation of section B. Similarly, operation of valve 50 of section B resets slide valve 57 and sets slide valve 58, and operation of valve 50 of section C resets slide valve, 58 and sets slide valve 56 to repeat the cycle. In a modified fluidic circuit (Fig. 10, not shown), timing is further controlled by a valve (212) connected between reservoir 48 and valve 56 and which opens at a preset pressure level; and a safety valve (218) is operable, should valve 56 stick, to open valve 55. The filter bags 43 are of the inward flow, hanging type; and may be made of felted or woven wool.
Patent GB-1418887-A (GB)
Title: Container for housing a stack of sheet material to be dispensed therefrom
IPC: G03D13/02
Filed: 1972-12-08
Abstract: 1418887 Feeding sheets XEROX CORP 8 Dec 1972 [15 Dec 1971] 56673/72 Heading B8R A cassette for holding a pile of sheets 15 comprises a base 16 with four sides 24, 18, 20 and 22. The front side 24 comprises two gate portions 24a, with a space therebetween, both portions being pivotable by 3 or 4 degrees from the vertical when the cassette is inserted into sheet feeding apparatus, so that the uppermost sheet can be advanced over the lips 24b by friction rollers. The pile is supported on a tray member 34 pivoted at 38 and biased upwardly by spring means in the sheet feeding apparatus against the rollers. An adjustable side guide 48 registers the pile 15 against side 20 and an adjustable rear guide 48a registers the pile against the pivotable gates 24a, 24b. The guides 48 and 48a may be a unitary construction which is adjustable diagonally. The rear guide 48a has two blocks with rough faces 56a and 58a which engage the rear edge of the pile 15. During operation, the topmost sheet is first moved backwards against the blocks which cause it to buckle. It is then advanced over the lips 24b.
Patent GB-1422668-A (GB)
Title: Tunnelling
IPC: E21D9/00
Filed: 1973-12-10
Abstract: 1422668 Rock drills A SCHIESS 10 Dec 1973 [11 Dec 1972] 57163/73 Heading B3C [Also in Divisions E1-E2] A method of tunnelling into rock comprises arranging elongated rock drills in horizontally spaced apart relationship in the configuration of the desired tunnel, advancing the rock drills lengthwise by drilling into the rock to a distance of about twice the predetermined degree of advance of the face of the tunnel, supporting the drills externally of the rock face whilst they remain entered into the rock, blasting the rock within the volume contained by the drills to said predetermined degree of advance of the face, removing the blasted rock and repeating the cycle of operations. Preferably the drills involve hydraulically powered drilling heads 14 mounted on longitudinal ribbed rods, pipes or the like 10 mounted in a movable rig 12 so that the pressure on the drilling heads can be equalized. Cementitious material 20 can be applied to the roof and walls of the tunnel over the rear ends 18 of the rods 10, which rear ends can be retracted from the cementitious material when set.
Patent GB-1242609-A (GB)
Title: New phosphate ester and its use as a stabiliser for organic materials
Inventor: HOWELL FREDERICK HAROLD
IPC: C07F9/655
Filed: 1968-12-03
Abstract: 1,242,609. Stabilized polymer compositions. GEIGY (U.K.) Ltd. 3 Dec., 1969 [3 Dec., 1968], No. 57191/68. Heading C3P. [Also in Division C2] Synthetic polymers, e.g. vinyl chloride polymers and co-polymers (e.g. with vinyl acetate), or polyolefines, are stabilized by the addition thereto of the novel phosphate ester of the formula In an example a formulation is made up from polyvinyl chloride, di-alphanol phthalate, a barium/cadmium stabilizer, a zinc stabilizer, a phosphite chelating agent and the above specified novel phosphate ester and the composition is then formulated into polyvinyl chloride film by milling the composition for 15 minutes at 160‹ C., the resulting film being stabilized against heat and light.
Patent GB-1410867-A (GB)
Title: 5-7-dihydroxy-2,3-dihydroimidazo-1,2-a pyrimidines
IPC: C07D487/04
Filed: 1973-12-12
Abstract: 1410867 Imidazo-[1,2-a] pyrimidines: substituted malonic esters PRODUITS CHIMIQUES UGINE KUHLMANN 12 Dec 1973 [15 Dec 1972] 57505/73 Heading C2C The invention comprises compounds of the Formula I where R<SP>1</SP> is hydrogen, halogen, acetylamino, C 2-5  alkyl, C 5-8  cycloalkyl or phenyl or benzyl optionally substituted by halogen, C 1-4  alkyl or C 1-4  alkoxy and their preparation by condensing a malonic ester derivative R<SP>1</SP>C(COOC 2 H 5 ) 2 Na with 2-aminoimidazole in an alcoholic medium. The malonic esters and their sodium derivatives are conventional methods.
Patent GB-1346178-A (GB)
Title: Purification of gases by a process involving adsorption
IPC: B01D53/047
Filed: 1970-12-03
Abstract: 1346178 Regenerating absorbents L AIR LIQUIDE SOC ANON POUR L ETUDE ET EXPLOITATION DES PROCEDES GEORGES CLAUDE 3 Dec 1970 [3 Dec 1969] 57548/70 Heading B1L A process which is particularly suitable for the separation of components of the purge gas in ammonia synthesis comprises a) passing the gas through one or more absorbents disposed in two chambers in series to absorb one component at least; b) stopping the supply of gas to be purified and isolating the first and second chambers from one another; c) drawing off gases contained in the first chamber in a direction opposite to the direction of treatment by reducing the pressure d) connecting the two chambers and reducing the pressure in the second chamber, so that the pressure is that of step c) and the gas continues its flow-a countercurrent direction; d) passing a gaseous eluant under the pressure of step c); e) isolating the chambers and raising the pressure in the first chamber to an intermediate between steps a) and c) with fresh gas to be purified f) raising at the same time the pressure in the second chamber to the same level with eluant g) bringing the two chambers into communication and repeating step a). The purified gas is collected from step a) while the other steps are to regenerate the absorbents.
Patent GB-1202789-A (GB)
Title: Tank for use in storing low temperature liquefied gas
IPC: B21D1/00
Filed: 1968-12-05
Abstract: 1,202,789. Liquefied gas storage containers. BRIDGESTON EKIKA GAS K.K. 5 Dec., 1968 [6 Feb., 1968], No. 57908/68. Heading F4P. The vertical side 6, Fig. 1, or sides of a membrane tank for storing cold liquefied gas e.g. methane supported by load bearing heat insulation material 4 lining the interior of a rigid outer tank is formed initially with vertically extending corrugations 6<SP>1</SP>, Fig. 6A, such that at ambient temperature and under no load its peripheral dimension is greater than the inner periphery of the insulation 4 whereby when under load and low temperature the stress to which the wall is subjected becomes zero or becomes compressive. When the periphery of the membrane tank side relative to insulation 4 is such that the membrane stress becomes zero the corrugated membrane periphery at low temperature and under no load assumes the position shown in Fig. 6B and at low temperature and normal load the membrane is stretched to assume the position shown in Fig. 6C so that substantially the whole of the membrane tank periphery bears against the insulation 4. In the event that the relative periphery dimensions of the membrane wall and the insulation are such that under working conditions the membrane stress is compressive, the membrane side wall assumes the corrugated form shown in Fig. 6D.
Patent GB-1408790-A (GB)
Title: Colour television receiver
IPC: H04N9/455
Filed: 1972-12-27
Abstract: 1408790 Colour television MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 27 Dec 1972 [27 Dec 1971 28 Dec 1971] 59716/72 Heading H4F A PAL colour television receiver operates to demodulate the received chrominance signal with reference subcarriers of constant phases, the polarity of the resulting output of the R-Y demodulator 23 being inverted during alternate lines to provide a constant polarity R-Y output. Compensation for phase errors in the received signal is achieved using a voltage-controlled delay line 30 to alter the phases of the bursts which are separated by burst gate 17 and used to control the phase of operation of a subcarrier oscillator 20 to produce a reference subcarrier of opposite phase to the average phase of the bursts from gate 17, the output of oscillator 20 being passed directly to B-Y demodulator 21 and via a 90 degree phase shifter 22 to R-Y demodulator 23. To invert the output of R-Y demodulator 23 on alternate lines a square wave signal from flip-flop 25 of a period equal to twice the line period is added at 26 to the output of demodulator 23, the positive part of the square-wave signal coinciding with the non-inverted output of demodulator 23. The resulting added signal is full-wave rectified at 27, the D.C. component due to the square-wave signal being subtracted at 28 to provide an R-Y signal of non-inverted form. The voltage controlled delay line 30 is controlled by a detector 29 (also Fig. 6, not shown) which operates by adding in respective integrators the outputs from the demodulators 21, 23 in consecutive lines, non-zero outputs from the integrators indicating that phase errors exist. The outputs of the integrators are added and used to control the delay of delay line 30. To ensure the correct variation in this delay, the input to the integrator receiving the output of R-Y demodulator 23 is inverted when the output of the B-Y demodulator 21 is negative, and the input to the integrator receiving the output of B-Y demodulator 21 is inverted when the output of the R-Y demodulator 23 is positive. To ensure correct phase of operation of flipflop 25 a sync. stabilizer 31 (also Fig. 9, not shown) operates to separate from the output of phase inverter 18 which is connected to burst gate 17, the first burst following each vertical sync. signal supplied from 12, this burst always being of the same phase. Sync. stabilizer 31 includes a first multivibrator (71, Fig. 9, not shown) triggered by the trailing edge of each vertical sync. signal and a second multivibrator (72) which is set by the trailing edge of the output of the first multivibrator. The output of the second multivibrator enables an AND gate (73) which also receives the burst signals, the first burst signal passed by the AND gate controlling the flip-flop 25 and also resetting the second multivibrator (72).
Patent GB-1365689-A (GB)
Title: Process for the production of carboxylic acids
IPC: C12P7/44
Filed: 1971-12-23
Abstract: 1365689 Carboxylic acids by fermentation T HASEGAWA CO Ltd 23 Dec 1971 [26 Dec 1970 31 Aug 1971] 60151/71 Heading C2C Straight-chain dicarboxylic acid, an omegahydroxy fatty acid, and an (omega-1)-keto fatty acid are prepared simultaneously by aerobic culture of an n-paraffin assimilating strain of genus Corynebacterium in a medium comprising an n-paraffin with at least 10 C., a nitrogen source and a mineral. The medium may also include acrylic acid or a salt thereof or an anion exchange resin. Corynebacterium dioxydans nov. sp., Corynebacterium hydrocarboxydans nov. sp. are used in examples and hydrocarbons may be n-decane, and n-dodecane to n-eicosane. Conventional nitrogen sources, phosphates, acid salts of magnesium, iron, manganese, calcium, copper, zinc, molybdenum and boron are mentioned together with anion exchange resins. The crude acids formed may be esterified, and saponified to give pure acids. Undecan-1,11- dicarboxylic, 13-hydroxytridecanoic and 12- ketotridecanoic acids; hexadecan 1,16 - dicarboxylic, 18-hydroxystearic, and 17-ketostearic acids; tridecan-1,13-dicarboxylic, 15- hydroxypentadecanoic and 14-ketopentadecanoic acids; and tridecan-1,13- and tetradecan-1,- 14-dicarboxylic, 15-hydroxypentadecanoic and 16-hydroxypalmitic and 14-ketopentadecanoic and 15-ketopalmitic acids are prepared in examples.
Patent GB-1259715-A (GB)
Title: Improvements in or relating to variable speed friction gears
Inventor: BOND PETER WESLEY
IPC: F16H15/36
Filed: 1969-12-10
Abstract: 1,259,715. Variable-speed friction gear. P. W. BOND. 9 Dec., 1970 [10 Dec., 1969], No. 60230/69. Heading F2D. A continuously variable friction gear for lathes, drills and other machine tools comprises a conoid 15 fast on an input shaft 13 and engaged by the resilient rim 24a of a friction wheel 24 slidably keyed fast on an intermediate shaft 22 carried by a member 20a which pivots at 20, in a fixed frame 10, under the control of a manually operated lever 26, the friction wheel 24 being spring loaded into engagement with the conoid 15 by a spring 25 arranged at one end of the intermediate shaft 22, the other end of the shaft 22 being connected to an output shaft 28 via pulleys 23, 29 and a belt 30. Alternatively the shaft 22 may be directly connected to a flexible driven shaft (not shown). A roller 16 freely mounted on the drive shaft 13, provides a neutral position for cessation of drive when engaged by the friction wheel 24.
Patent GB-1367170-A (GB)
Title: Fire shutters
IPC: E05F15/20
Filed: 1972-10-05
Abstract: 1367170 Operating fire shutters HOLTS SHUTTERS Ltd 5 Oct 1972 [28 Dec 1971] 60271/71 Heading E2M [Also in Divisions A5 and H2] An operating device for fire resistant roller shutters, comprises: a D.C. electric operating motor 12, a transformer rectifier 20 providing power from the mains, a standby battery 21 having nickel-cadmium cells connected to a trickle charger 22 to power the motor in the event of a mains failure, and a heat or smoke sensitive detector 23 which acts on a switch 27 to actuate the motor in the event of a fire. The switch 27 may also be operated manually and is additionally connected to a photocell 26 and timing device 25 which interrupt the closing movement for a predetermined time if a person is detected. An alarm bell 28 rings when the switch 27 is actuated, and a limit switch 24, which incorporates a worm drive sensing the number of revolutions of a drive shaft, stops the motor at the open or closed position. A hand crank system is also provided.
Patent GB-1376330-A (GB)
Title: Heat exchangers
IPC: F28D1/02
Filed: 1972-12-29
Abstract: 1376330 Tubular heat exchangers; steam generators BRITISH NUCLEAR DESIGN & CONSTRUCTION Ltd 29 Dec 1972 [29 Dec 1971] 60616/71 Headings F4S and F4A Heat exchange between primary sodium acting as coolant in a reactor core and secondary sodium acting as a source of heat for a steam generator is effected in a heat exchanger 16 comprising an array of helical tubes 23 disposed around a central pipe 19 within a cylindrical casing 17. The tubes extend between a central tube plate 20 disposed within the pipe 19 and tube plates 22 disposed within outer pipes 21 symmetrically located about the central pipe 19; vertical tube portions connect the ends of the helical tube portions to the tube plates. In use primary sodium from "hot" pool 14 enters the heat exchanger 16 via inlet duct 24, passes over the tubes 23, and is thereafter discharged via outlets 25 into the "cold" pool 13 in which the heat exchanger is located. Secondary sodium entering via inlet duct 26 passes through the tubes 23 and then leaves via outlet ducts 27. A structure 32 floating on the primary sodium within the casing 17 provides thermal insulation between the hot and cold secondary sodium in the pipes 19 and 21. The structure comprises an apertured bottom plate 33, a peripheral outer wall 34, and central and peripheral vertical tubes 35 and 36 surrounding the pipes 19 and 21. Removable plugs 28, 29 closing the upper ends of the pipes 19 and 21 permit faulty tubes to be plugged without disassembly of the heat exchanger. The coils of the helical tubes are supported by hangers suspended from brackets which extend outwardly from the pipe 19, the upper and lowermost turns being left unsupported to accommodate differential thermal expansion. A ring 30 having radial struts 31 provides support for the pipes 21. A separate set of cooling coils 38 with inlet and outlet ducts 39 and 40 is provided to prevent overheating of the heat exchanger 16 at times when the flow of secondary sodium through the tubes 23 has been stopped and the reactor has been shut down.
Patent GB-1299197-A (GB)
Title: High voltage d.c. systems including transformers or reactors
IPC: H01F27/32
Filed: 1969-12-22
Abstract: 1299197 Transformers; inductors LICENTIA PATENT-VERWALTUNGS-GmbH 22 Dec 1969 [23 Dec 1968] 62385/69 Heading H1T An oil-cooled transformer or reactor for use in H.V.D.C. systems has an at least partially bare control electride 5 which is at substantially the same D.C. potential as the adjacent end of a winding 3 and is positioned where oil enters or leaves the winding to ensure that an adequate proportion of the direct voltage on the winding is dropped across the oil and thus to relieve the solid winding insulation. The control electrode 5 may be situated in a zone of low electrical field strength between the winding 2 and a shielding ring 4, or may form part of a cylindrical, capacitive control shield (Fig. 4, not shown). One or more control electrodes 5 may be provided between winding discs (Fig. 7, not shown) or at the ends of winding layers as in Fig. 8. In the latter case, the electrode 5 is formed of high resistance conducting paper and contributes to the A.C. insulation while taking on a D.C. potential which is determined by solid insulation 7 and the area of the electrode 5. The conducting paper may be circumferentially slit to increase the axial resistance of the electrode.
Patent GB-717565-A (GB)
Abstract: 717,565. Cable couplings. COMMERCIAL RADIO-SOUND CORPORATION. March 5, 1951, No. 11849/53. Divided out of 717,497. Class 38(1). A connector for tapping a high frequency concentric transmission line without distorting the line conductors comprises a pair of metal blocks 37, 38 having channels 39, 40 to receive and clamp the line between them. Tapped holes 44, 45 in block 37 receive a tool to bore holes in the line and expose the outer and inner conductors 33, 34 respectively. A screw 47 is inserted in hole 44 to contact the outer conductor and connect it to a terminal 53 screwed into block 37 and an insulating bush 48 is inserted in hole 45 inside which a terminal 50 is screwed to contact conductor 33, the terminals 50, 53 enabling connection to be made to a branch line. The end of screw 47 may be gold plated to obtain good contact, and access of moisture may be prevented by sealing compound placed at the regions 54-59 or by gaskets at the various joints of the connector.
Patent GB-1171951-A (GB)
Title: Improvements in or relating to Electrical Circuit Interrupters
IPC: H01H39/00
Filed: 1967-01-05
Abstract: 1,171,951. Electric cut-outs. CENTRAL ELECTRICITY GENERATING BOARD, J. H. BRUNTON, J. E. FIELD, M.G. BOWDEN, and A. D. HEYES. 5 April, 1968 [5 Jan., 1967], No. 764/67. Heading H2G. An electrical circuit interrupter comprises a conductive solid element 10, in which brittle fracture can be induced, means for connecting the element in a circuit 13, 14, means for inducing brittle fracture in the element perpendicular to the direction of current flow, and a means to separate the two parts of the element after fracture. Tension, typically 10 to 20% of tensile/active strength of the element, may be applied longitudinally to the element 10 to accelerate the fracture. The means of initiating the fracture and the separating means may be a single means, e.g. a wedge driven by impact, or separation may be achieved by the tensioning means 23. The fracture may be initiated by any one of a number of means including an explosive or impact device 20, 22, a hot wire, an exploding wire, piezo or magneto strictive devices, light or laser beams, electron or ion bombardment or a focused shock wave. The conductive element may be made of a conductive coated brittle insulator, e.g. of glass boride, nitride or carbide, or a brittle conductor, e.g. tungsten, molybdenum or a brittle steel. The element may be shaped to control the point of initiation of fracture by notching, etching or scribing. It may also be shaped to retard reflected stress waves in the element correctly so as to not interfere with the propagation of the fracture. The element may be surrounded by a material of identical acoustic properties to attenuate the effect of secondary waves at the element boundaries. The element may be in the form of a single semi-conductor crystal with a flat cleavage plane suitably placed to act as the fracture plane, e.g. it may be of cadmium sulphide. To prevent arcing the element may be immersed in a vacuum or fluid, e.g. oil or sulphurhexafluoride. With large elements fracture may be initiated at a number of points to ensure rapid breakage. A timing means may be provided to cause fracture of the element at any desired time, e.g. if alternating current is used around the current zero point.