baber/WOPTO huggingface dataset:
Patent GB-1476345-A (GB)
Title: Frequency division multiplex telephone system
IPC: H04Q11/02
Filed: 1974-06-24
Abstract: 1476345 FDM intercommunication systems ROCKWELL INTERNATIONAL CORP 24 June 1974 [25 Oct 1973] 27937/74 Heading H4K In an FDM telephone system in which the substations 10 share a common cable, each includes a variable frequency receiver 20 and transmitter 18, and a receiving and transmitting frequency together define a communication channel, a channel is allocated to a substation pair between which communication is to take place by a control centre 24 which monitors the state of each substation and allocates a transmitting and receiving frequency to each substation by means of channel control signals. The control centre interrogates the substations on a TDM basis, Fig. 3 (not shown) and the state of each substation, indicated by a monitor signal from the station signal transceiver 26, is entered into a store (92) Fig. 4 (not shown). When a change of state occurs (e.g. a substation goes off-hook) central control takes appropriate action (e.g. reversion of dialling tone on a frequency reserved for this purpose from a tone generator 32) by issuing control signals. Central control thus controls and monitors the progress of a call, the state of each substation involved being updated in the store (92) when appropriate. Conference calls are achieved by allocating the further party or parties one of the frequencies of the relevant channel. In a similar way there is provision for call transfer. Preferably each channel includes two different frequencies, in which case a central frequency translator 28 is necessary, but two substations may communicate on the same frequency. Channels are assigned to calls by the control centre on any predetermined basis.
Patent GB-242981-A (GB)
Title: Improvements in or relating to steam and other vapour power plants utilising caustic soda or like fluid
IPC: F22B1/20
Filed: 1925-11-06
Abstract: 242,981. Koenemann, E. Nov. 12, 1924, [Convention date]. Heating by caustic soda and the like. - In caustic soda or like boilers, the lye in the vessels in which it is diluted by the injection of steam is separately circulated this circulation combining in the vessels with the circulation between the vessels and the evaporators. Lye from a vessel 3 into which steam is injected through a pipe 7 is drawn by a pump 12 through a pipe 11 into an evaporator 6, from which it passes through a pipe 13 into the evaporator 4 associated with the vessel 3. It passes from the evaporator 4 through the pipe 14 containing a throttle valve 15 into the mixing vessel 5 associated with the evaporator 6. Pumps 18, 21 maintain a secondary circulation of the lye in the mixing vessels through external pipes 17.
Patent GB-1359218-A (GB)
Title: Healds
IPC: D03C9/06
Filed: 1972-08-08
Abstract: 1359218 Hand loom shedding W B PINK 8 Aug 1972 [15 June 1971] 27994/71 Heading D1E A hand loom shedding mechanism comprises a number of warp separating members 1 joined to adjacent members 1 by shedding members 4 or 5. For plain weave the members 4 and 5 are alternately on either side of the members 1, other configurations may be provided for other weaves. More than one set of mechanisms, for different weaves, may be provided, the sets not in use being suspended above the loom with their tails 3 between the warp threads. The wefts are beaten up by curves 6 on the members 1.
Patent GB-874207-A (GB)
Title: Improvements in and relating to electromagnetic relays
Inventor: DISTIN LIONEL SPARKE
IPC: H01H51/06
Filed: 1957-09-05
Abstract: 874,207. Electromagnetic relays. ERICSSON TELEPHONES Ltd. Aug. 29, 1958 [Sept. 5, 1957], No. 28007/57. Class 38 (5). The magnetic circuit of a vibration-resistant relay comprises coaxial tubular cores 1, 7 presenting annular poles at 4, 8 and circular armature 17 mounted on a rod 11 which is supported by diaphragms 9, 10, which bias the armature away from the poles 4, 8 to an extent limited by a non-magnetic spacer 12. The rod 11 has pivoted to it at 24 an H-shaped actuating member 20 which is slotted at 26 to provide thin necks so that the end limbs 22 can rock about the axis of the centre limb. Four change-over contact sets are mounted on the base 6 for operation by the free ends of the limbs 22. Each contact set comprises two fixed contacts on pillars 27, 28 and a pillar 31 supporting a resilient moving contact arm 32 which carries an insulating stud 34 for movement by the actuating member 20 when the armature is attracted on energization of the coil 5. Instead of being supported on the base 6 by the coupled members 35, 36 shown, the core and coil assembly may be located by the container 38.
Patent GB-1522523-A (GB)
Title: Electric windscreen wiper systems
IPC: B60S1/08
Filed: 1975-07-03
Abstract: 1522523 Automatic control of D.C. motors GENERAL MOTORS Ltd 15 June 1976 [3 July 1975] 28013/75 Heading H2L D.C. motors A, B drive respective wiper arm and blade assemblies of a vehicle windscreen wiper system and are maintained in synchronism by a circuit including similar binary counters 20, 24 which receive, from rotary members 16, 18 driven by the motors, pulse sequences having the same pulse number and representing the speeds of the motors, the counter outputs being applied to a binary cornparator 28 for comparing corresponding ones of the outputs and producing a logic 1 output at respective terminals A<B, A = B and A>B according to whether motor B is faster than motor A, the motor speeds are equal or motor A is faster than motor B, the appropriate logic 1 output from one terminal being applied with the logic 0 outputs from the other two terminals to OR gates 30, 34 controlling transistor switching circuits 44, 56, 60 and 66, 78, 82 for the motors, whereby both motors are switched on when their speeds are the same and the faster motor is switched off until the slower comes into synchronism therewith. The members 16, 18 may each comprise a gear wheel (96) having apertures (98) co-operating with a light-source (100) and photo-electric sensor (102), Figs. 2 and 3 (not shown), or having an annular metal plate (106) with a castellated periphery co-operating with a magnet (108) and Hall Effect device (110), Figs. 5 and 6 (not shown), or having a segmented annular metal plate (114), the gear wheel in this case being of insulating material, which plate co-operates with inner and outer contact arms (118, 116) respectively engaging its continuous track or its segments, Fig. 8 (not shown), the pulses produced by the sensor (102), Hall Effect device (110) or contacts (114, 116, 118) being fed to a Schmitt trigger (112), Figs. 4, 7 and 9 (not shown).
Patent GB-768038-A (GB)
Title: Noise squelch system for radio receivers
IPC: H03G3/26
Filed: 1954-09-28
Abstract: 768,038. Muting. BENDIX AVIATION CORPORATION. Sept. 28, 1954 [Oct. 22, 1953], No. 28014/54. Class 40(5) In a frequency-modulation receiver the anode load of the limiter 2 includes, in addition to a tuned I.F. circuit 7, a resistance 8 across which noise voltages are developed in the absence of a signal. The resistance 8 is decoupled for I.F. by a condenser 9 and noise voltages are applied via condenser 10 to a noise amplifier 13. After amplification in the valve 13 noise voltages are rectified at a diode anode 26 and smoothed to provide a negative mut= ing bias. The grid of the amplifier 13 is also connected to the grid of the limiter 2 via a resistance 11, the limiter being provided with grid-current bias which, in the presence of a signal, drives the amplifier 13 to cut-of. In an alternative arrangement, Fig. 2 (not shown), the grid leak of the limiter is placed in series with the input I.F. circuit instead of in shunt.
Patent GB-819637-A (GB)
Title: Improvements in and relating to the bleaching of linen
IPC: D06L4/24
Filed: 1955-10-03
Abstract: A fabric of bast fibres is bleached with an alkali-metal chlorite but not using a hypochlorite and the fabric not having been subjected to a lime boil, the fabric being treated with an aqueous solution of at least 10 grams per litre of the chlorite at a pH below 7 and a temperature exceeding 60 DEG  C.  The temperature may be up to 100 DEG  C. and the pH may be 3.5 adjusted with formic acid.  The fabric may be previously treated with a boiling solution of an alkali-metal hydroxide or carbonate and may afterwards be treated with such a boiling solution followed by a further alkali-metal chlorite solution at a pH below 7 and temperature above 60 DEG  C.  The boiling alkali solutions may be under pressure.  The chlorite treatment may be effected by padding the fabric with a solution and steaming the fabric.  The chlorite solution may contain sodium nitrate and a detergent and the treatment may be effected in a stainless steel jig. In Example (1), after a chlorite treatment at 80 DEG  C., fabric is treated in a boiling bath containing caustic soda, sodium formaldehyde sulphoxylate and soap, soured with hydrochloric acid, and again treated with chlorite, rinsed in water and soaped at the boil.
Patent GB-709255-A (GB)
Title: Improvements in electric storage batteries
IPC: H01M50/147
Filed: 1952-11-07
Abstract: 709,255. Batteries. BOSCH GES., R. Nov. 7, 1952, [Nov. 29, 1951.] No. 28038/52. Class 53. A storage battery having filling openings with vented stoppers 3 and terminals 5 projecting above the cover 2 is provided with a lid 7 having depending partitions 8 forming separate enclosures for the filling openings and terminals. Ribs 13 on the cover 2 may overlap the partitions 8 as shown in Fig. i or they may abut one another. In the latter case the meeting edges may be bevelled to ensure correct positioning of the lid 7. Specification 709,254 is referred to.
Patent GB-903613-A (GB)
Title: Improvements in or relating to the production of acetoacetic acid esters
IPC: C07C69/72
Filed: 1960-08-12
Abstract: Acetoacetic acid esters are prepared by reacting diketene with an alcohol in the presence of an acid esterification catalyst, the diketene, alcohol and catalyst being introduced into the reaction product of the diketene and alcohol, obtained either by the process according to the present invention or by any other suitable process, which has been pre-heated to the reaction temperature, any secondary products which are simultaneously formed and whose boiling points are below the reaction temperature being separated together with unreacted alcohol by distillation from the crude acetoacetic acid ester which has been formed.  The temperature of the reaction medium is preferably in the range from 90 DEG C. to the boiling-point of the acetoacetic ester.
Patent GB-944808-A (GB)
Title: Improved polymeric dihydroquinoline compositions
IPC: C08K5/3437
Filed: 1960-08-15
Abstract: A rubber antioxidant composition comprises polymeric dihydro-2-2-4-trimethyl quinoline which has been fused with such an amount of a compatible melting point depressant as to give the fused composition an initial softening point between 60 and 90 DEG C. Specified depressants include fatty acids and their esters, a polyalkylene glycol or an alkene polymer.  The antioxidant may be added to a smoked sheet-titanium dioxide blend.  U.S.A. Specifications 2,064,752 and 2,718,577 are referred to.
Patent GB-1353547-A (GB)
Title: Electron tube
IPC: H01J3/02
Filed: 1971-06-16
Abstract: 1353547 Velocity-modulated tubes VARIAN ASSOCIATES 16 June 1971 [29 June 1970 16 Nov 1970] 28150/71 Heading H1D A discharge tube includes an electron gun in which the cathode is insulated from the anode by a hollow flared insulator having an encircling external projection which is joined to a portion of the tube envelope which is insulated from the cathode. As shown, the frusto-conical insulator 22, of alumina or beryllia ceramic, is sealed, by welding, at its shoulder 23 to the soft iron anode 16 having a copper insert 17 and, at its inner end, by a flanged member 34 to the beam control electrode 33, which is itself sealed to but insulated from a focus electrode 38 which supports a focus grid electrode 46 operated at cathode potential and having its apertures aligned with those of a control grid 11. Electrodes 33 and 38 both have soft iron jackets 35 and 45, respectively, around their aperture ends, to assist in beam shaping. Downward radiation from the cathode heater 15 is prevented by a plurality of molybdenum or nickel heat shield discs 49 electrode 33 is provided with a rearwardly projecting cooling fin 36, which also acts as part of the lead 37 for the electrode; an alumina coolant enclosure 61, having inlet and outlet ports 65 and 66, respectively, is secured by screws 64 to the rear face of the anode; and the ceramic back-up ring 28 and positioning ring 29 reduce thermal stress on the sealing flanges 24, 26. In a modified embodiment (Fig. 3, not shown), the coolant enclosure 61 is completely sealed, contains a perfluorinated liquid coolant, has an end wall of rubber to permit expansion, and supports cooling fins on its outer surface. In a further embodiment (Fig. 4, not shown), the gun is housed at the upper end of the discharge tube, and is provided with boiler and condenser enclosures thereabove, the condenser being finned and having an expansion chamber terminated by a metal bellows. As described, the gun is incorporated in a magnetically-focused klystron (Fig. 1, not shown), but reference is made to its use in a travelling wave tube and magnetron.
Patent GB-1407362-A (GB)
Title: Photographic dye diffusion transfer film unit
IPC: G03C8/46
Filed: 1973-06-13
Abstract: 1407362 Photographic dye diffusion transfer film unit AGFA-GEVAERT AG 13 June 1973 [13 June 1972] 28165/73 Headings G2C and G2X A photographic film unit for the production of a non-side-reversed image comprises a transparent support, an image-receiving layer, an opaque lightreflecting layer permeable to alkaline liquids, a light-sensitive element in which at least one lightsensitive silver halide emulsion layer and/or a hydrophilic colloid binder layer adjacent thereto contains a dye-giving compound capable of forming a diffusing image dye and a transparent cover sheet and at least one container arranged at the side of the material, which contains a processing liquid and which when subjected to mechanical force is split open to release its contents between two layers of the film unit and/or between the uppermost layer of the light-sensitive element and the transparent cover sheet, in which a border strip made of a material which is impermeable to liquids is arranged between the opaque lightreflecting layer and the light-sensitive element so as to surround the image on all sides. The border strip may be 3 to 30Á thick and comprise a hydrophobic film forming material e.g. a cellulose ester, polyester or polycarbonate. The dye-giving compound maybe a non-diffusing compound from which a diffusible dye is split off when it reacts with a developer oxidation product or with exposed silver halide (see Specification 1321046). The film unit may comprise spacer strips arranged along two parallel edges between the two layers between which the processing liquid is to be forced in, to ensure that the liquid layer so formed will have a suitable thickness.
Patent GB-824127-A (GB)
Title: Improvements in tiles
Inventor: GREGORY REGINALD WILLIAM
IPC: E04F13/18
Filed: 1956-09-14
Abstract: 824,127. Facing tiles. EVERED & CO. Ltd. Sept. 13, 1957 [Sept. 14, 1956], No. 28205/56. Class 87(1) In a corner tile comprising two mutually perpendicular plates connected along adjoining straight edges, the end edges of the plates, at one. end at least, extend at approximately 45 degrees to the connected edges. The tile may be cut from a combination tile 19, Fig. 2, of polystyrene &c., grooved at 25 to facilitate sub-division. As shown, the tile 19 comprises two rectangular plates 21 each being twice as long as it is wide but the length may be a higher multiple of the width. Two types of tile may be cut from the combination tile 19; one comprises two mutually perpendicular right angled isosceles triangles 26 connected along non-hypotenuse edges, and the second comprises a trapeziumshaped plate consisting of co-planar triangular elements 26, 27 connected along its shorter parallel edge to a perpendicular plate 26. A further tile 29, Fig. 8, comprises one tile of each of these two types. In another modification, Fig. 12, one plate 21 consisting of two trapezium shaped elements is connected along the line 24 to a perpendicular plate 21 comprising two triangular elements. For facing re-entrant or projecting corners, the exposed faces of the tiles are at 90 degrees or 270 degrees respectively, or alternatively both faces may have a similar surface finish so that the tile may be used in either position. The grooves 25 are shaped similarly to the free edges, being of V- or U-shape in cross-section or of part-circular or other arcuate form, and may be provided on the exposed face as shown, or on the rear face to provide a flush exposed surface. The rear face has a peripheral flange 23, Fig. 4, and may be dimpled, roughened or formed with projections and recesses.
Patent GB-242673-A (GB)
Title: Improvements in oil burners
IPC: F23D11/08
Filed: 1925-11-09
Abstract: 242,673. Hardinge Bros., Inc., (Assignees of Hardinge, F.). Nov. 10, 1924, [Convention date]. Spray burners.-In a rotary oil burner such as described in Specification 223,984, the oil is supplied by the fuel stand-pipe to a circular edge or surface from which it flows directly on to a circular edge or surface on the atomizing nozzle. Fig. 2 shows on form of burner in which a rotary atomizing nozzle 16 screws at its lower end on a motor-driven spindle 11 surrounding a fuel standpipe 24 mounted on a fixed base. The fuel is forced by a pump or by gravity up the stand-pipe so as to issue through radial ducts 29<1> in the standpipe cap 29 to a discharge surface 31. The fuel flowing from the surface 31 passes over a gap of approximately <1>/64 inch between the surface and the upper end of the spindle 11 and then owing to the high speed of rotation of the spindle travels up the inner surface of the. nozzle and is discharged at its flared upper edge into the combustion chamber in a thin film which is readily atomized. by the air current produced by fanblades provided on the outer surface of the nozzle. The spindle 11 carries at its upper end a thimble 35 which forms an annular pocket 37 on the lower end of the nozzle thereby providing a reservoir into which the oil in the nozzle gravitates when the operation of the burner ceases and from which the oil can flow when the burner is again started. The cap 29 is formed with vertical holes 38 through which the air draught caused by the rotation of the nozzle issues. The passage of air and oil through the cap prevents it from becoming overheated. The Specification as open to inspection under Sect. 91 (3) (a) comprises also (1) a modified form of cap shown in Fig. 4 (Cancelled) in which the radial oil ducts 29<1> lead to a conical apron 39<1> which is formed with vertical air slots 38<1> (2) a further modified form of cap shown in Fig. 6 (Cancelled) in which the oil flows from a central aperture 40<1> over the whole of the slotted apron 39<11>. This subject-matter does not appear in the Specification as accepted.
Patent GB-503813-A (GB)
Title: Method and means for feeding a strip through two or more sharpening machines
IPC: B24B3/48
Filed: 1937-10-12
Abstract: 503,813. Sharpening metal strip. STEINER, L. Oct. 12, 1937, No. 28210/38. Divided out of 503,779. [Class 60] In a machine for sharpening the edges ofmetal strip, intended for making razor blades, the strip 26 is operated upon by, for example, four pairs of sharpening rollers 16, 17, the pairs A and C serving respectively to grind opposite edges of the strip, and.the pairs B, D serving to hone opposite edges. The strip is unrolled from a reel 2 by a driven roller 3 and an adjusable spring - pressed roller 7, and between the rollers A, B, which treat the same edge of the strip, and between the rollers C, D, which treat the opposite edge, the strip passes between guide rollers 11, is twisted 90‹ to pass between rollers 14 and is then twisted back again 90‹ to pass between guide rollers 13; this arrangement allows the strip to bend up or down to compensate for lack of alignment of the rollers A, B, or C, D. After leaving the rollers B, the strip is twisted 180‹ so that the opposite edge is treated by rollers C, D. In order to allow for a greater difference of level of successive pairs of rollers, the twisted part of the strip may run between staggered rollers 14<1>, Fig. 5, which deflect the strip to the required extent. Specification 503,779 is referred to.
Patent GB-476778-A (GB)
Title: Improvements relating to the sizing and dressing of textiles
IPC: D06M15/11
Filed: 1936-10-16
Abstract: Textiles are sized and dressed using a pectin obtained by extraction from lixiviated beet, the lixiviation having been effected at a temperature between 30 and 80 DEG  C., until all water-soluble constituents were removed.
Patent GB-1302725-A (GB)
IPC: C01F7/164
Filed: 1970-06-11
Abstract: 1302725 Cement expansion agents DENKI KAGAKU KOGYO KK 11 June 1970 [13 June 1969 14 June 1969] 28257/70 Headings C1H and C1J A composition for offsetting shrinkage in cement and containing, in mole ratio, CaO/ CaSO 4  of 0À5-1À8 to 1 and CaO/Al 2 O 3  of 3-9 to 1, is obtained by forming a melt under the electrodes in a direct resistance heating electric furnace consisting of at least one inorganic fluoride and gradually adding a blend prepared by adding at least one inorganic fluoride to a material containing CaO, CaSO 4  and Al 2 O 3 . Specified fluorides are of Ca, Na, Mg, K, Al, Ba and Al 2 (SiF 6 ) 3 , NaAlF 4 , Na 3 AlF 6 , Na 5 AlF 14 , CaF 2 5Al 2 O 3  and Ca 5 F(PO 4 ) 3 . The composition is added to cement, sand and gravel.
Patent GB-1309569-A (GB)
Title: Method of supplementing an image
IPC: G03C11/02
Filed: 1970-06-11
Abstract: 1309569 Supplementing a photographic image EASTMAN KODAK CO 11 June 1970 [13 Aug 1969 17 June 1969] 28368/70 Heading G2C A method of supplementing an image contained in a hydrophilic colloid layer carried by a support comprises overcoating part or all of the layer with a layer of a hydrophobic radiation-sensitive composition, exposing the sensitive layer obtained imagewise to actinic radiation and, if necessary, processing the exposed layer to obtain or stabilize the supplementary image by a processing method which does not impair the initial image. The image in the hydrophilic colloid layer is preferably a visible image e.g. a photographic silver image, a photographically produced dye image or an ink image. The image may be a latent photographic image which may be processed during or after production of the supplementary image to give a visible image e.g. by heating or treatment with a chemical composition. The hydrophobic radiation-sensitive composition may be a diazotype composition e.g. comprising 2, 5-diethoxy-4-morpholinobenzenediazonium fluoroborate, 2-hydroxy-3-naphth-#- anisidide, 5-sulphosalicylic acid and optionally colloidal silica, which facilitates stripping of the hydrophobic layer, dispersed in polyvinylbutyral, methylethyl ketone and tetrahydrofuran. A layer of methylmethacrylate, methylethyl ketone and tetrahydrofuran may be coated between the hydrophilic and hydrophobic layers as a stripping layer. The hydrophobic radiation-sensitive composition may be a furfurylidene composition, e.g. containing 5-bromofurfurylideneazine, 2, 4- toluenediamine, iodoform, polystyrene and chloroform, which may be processed by heating. The hydrophobic radiation-sensitive composition may contain 2-(4-dimethylaminophenyl)-4, 5, 5- trimethyl-1, 3-dioxane, 4-aminodiphenylamine, iodoform, polystyrene and chloroform or may contain tris (4-dimethylaminophenyl) methane, α, α, α- tribromoacetophenone, ethyl cellulose and toluene, which compositions may be heated after exposure to 150‹C. In Ex 7 the radiation-sensitive composition comprises tris (4-diethyl-amino-#-tolyl) methane trihydrochloride, 2, 2'-bis-(#-chlorophenyl)-4, 4', 5, 5' -tetraphenylbiimidazole and benzene/ N, N-dimethylformamide (1:1). The supplementary image may be removed by treatment with a solvent which does not impair the initial image. This invention may be used to update data files and to correct or edit aerial reconnaissance photographs.