baber/WOPTO huggingface dataset:
Patent GB-462191-A (GB)
Title: Improvements in or relating to a process for the production of water enriched with heavy water
IPC: C01B5/02
Filed: 1935-11-04
Abstract: <PICT:0462191/III/1> Water enriched with heavy water is obtained by causing reactions yielding hydrogen gas by the reduction of water which proceed (if desired with catalytic acceleration) to equilibrium to take place at as low a temperature as possible, the water enriched with deuterium hydroxide and deuterium oxide remaining at the end of the reaction being repeatedly returned to the process.  Technical processes producing hydrogen gas by the reduction of water (e.g. the reaction of carbon monoxide, or gases containing it, with steam) are preferably employed.  The enriched water may be further enriched by being introduced into a second process of the above kind carried out at a lower temperature than that observed in the first process.  A mixture of carbon monoxide and hydrogen is conveyed from a vessel 1 by a pump 2 through an irrigation tower 3 and is charged with steam from a pipe 20.  The gas mixture passes through heat-exchangers 4, 5 and pipes 6, 7 into a contact furnace 8 where the reaction of carbon monoxide with steam is effected at 400--500 DEG  C.  The catalysed gas mixture passes through a pipe 9 and the heat-exchanger 5 into a second contact furnace 11 where further reaction occurs at 320 DEG C.  The reaction mixture passes through a pipe 12 and the heat-exchanger 4 and is condensed in a cooling coil 13.  The gaseous product is collected in a vessel 19 while water enriched with heavy water collects in a vessel 14.  The hot water is conveyed by a pump 15 into the tower 3 where it is reintroduced into the initial gases, the quantity of fresh steam introduced through the pipe 20 being correspondingly reduced.  After three cycles the proportion of DHO to H2O is 1 : 2000.  The process may be conducted at normal or increased pressure.  The water so enriched may be further enriched by known methods such as electrolysis.  The Specification as open to inspection under Sect. 91 comprises also a catalyst for reacting carbon monoxide with steam obtained by mixing burnt magnesite, finely ground calcined calcium carbonate and wood charcoal, the finely ground mixture being granulated with an aqueous emulsion of asphalt and heated at 600--800 DEG  C. out of contact with air.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1345237-A (GB)
Title: Servo system
IPC: G11B20/16
Filed: 1971-06-30
Abstract: 1345237 Automatic control of position INTERNATIONAL BUSINESS MACHINES CORP 30 June 1971[17 July 1970] 30609/71 Heading G3R In a servosystem in which a controlled variable is represented by the difference in amplitude between two interleaved pulse trains, one, but not both, of which may have zero amplitude, the pulses set and reset respectively a synchronizable free running multi-vibrator 3 whose output controls gates 6, 7 arranged to separate the signals for control purposes, and the multi-vibrator has a frequency of the order of but less than that of the pulse trains so that when one set has zero amplitude the multi-vibrator continues to function. The pulse trains are derived from a magnetic head which is to be kept accurately in position between two control tracks prerecorded on a disc, as described in Specification 1219598. Each train consists of positive and negative pulses Fig. 2A (not shown) occuring in opposite order. They are applied at 10 to polarity detectors 1, 2 having a predetermined threshold to switch the multi-vibrator 3. Delay circuits 4, 5 are interposed between 3 and gates 6, 7 which are thereby opened a prescribed time after the start of the respective output from 3, and are closed when 3 again switches over. The input pulses applied to both gates are therefore alternately directed to respective output terminals, connected to the head positioning mechanism. The peaks of the respective signals are detected and stored by devices 8, 9, the mechanism moving the head until these peaks are equal in the two channels. A filter circuit comprising AND gates 13, 14 and inverters 11, 12 may be switched in by a switch S1. This ensures that only pulses occuring at about the correct time are gated to the input terminals of 3.
Patent GB-1048556-A (GB)
Title: Improvements in or relating to a tape driving system
IPC: G11B15/58
Filed: 1963-08-01
Abstract: 1,048,556. Magnetic tape driving systems. FUJITSU Ltd. Aug. 1, 1963 [Aug. 1, 1962], No. 30616/63. Heading G5B. A tape driving system comprising a pair of tape reels 1 and 2, vacuum columns 9 and 10 for tensioning the tape, a capstan 6 for driving the tape, and a magnetic head 13, is characterized in that starting and stopping and reversing the tape is effected by starting and stopping and reversing the motor driving the capstan 6. A vacuum damping unit 7 may also be included in the circuit, and the reels 1 and 2 are driven in response to signals from detector units 5 and 12 which indicate the amount of tape in the respective vacuum column. The driving motors for the capstan and the reels may be D.C. motors or oil hydraulic motors. The control circuit (Fig. 3, not shown) may include start and stop circuits 22 and 23 for the capstan motor 18.
Patent GB-785042-A (GB)
Title: Improvements in or relating to newspaper conveyors
IPC: B65H29/18
Filed: 1954-10-25
Abstract: 785,042. Photo-electric control systems. IGRANIC ELECTRIC CO., Ltd., and RAPLEY, H. H. Sept. 28, 1955 [Oct. 25, 1954], No. 30660/54. Class 40 (3). [Also in Group XVI] In a newspaper conveyer system in which a succession of groups of overlapping papers are conveyed on a horizontal belt, as each group reaches a given position which may be sensed photo-electrically two barrier elements are moved into the path of the papers one before and the other behind a group and then moved towards one another so as to cause the overlapping papers to slide together to form a stack. As shown, as the end of the stack of overlapping papers passes from between light source 10 and photo-cell 11 the photo-cell energizes a relay RW which locks and controls solenoid S1 which in turn controls a valve to admit compressed air to the underside of a piston 7. The piston inserts the blades 4, 5 at opposite sides of the stack and closes contact C2. Solenoid S2 is energized and controls a valve to admit compressed air to a cylinder 14 which rises with piston 7. The piston moving in this cylinder brings the rear blade 4 towards the front one so that the overlapping papers are made into a stack. Eventually the blade opens contacts C1 and the cylinders all restore. By the time contacts C1 are reclosed the front of the next stack of papers intercepts the light beam. In modifications both blades may approach each other or electric rotors may be used instead of compressed air for actuating the blades. A sensitive limit switch responsive to the absence of paper may replace the photo-sensitive device.
Patent GB-1375130-A (GB)
IPC: G01B5/213
Filed: 1973-06-28
Abstract: 1375130 Height and block gauges BRETIGNY RECTIFICATION 28 June 1973 [ 29 June 1972 15 May 1973] 30816/73 Heading G1M A gauge bar 1, Figs. 1,3, mounting an instrument 13 in one of a series of holes 12, is provided with accurately machined end blocks 2, 3 having bearing surfaces 8, 9. Several instruments 34-36, Fig. 6 may be mounted to measure different depth distances, or the bar may be stood on end for measuring as in Figs. 8 and 9 (not shown). In Fig. 10 the system 51 comprises two bolted together half rings, see also Figs. 11, 12, and is slidable along the bar 1 on plastics shoes 57, 58, 59 by holding insulated operating knobs 55' and releasing an adjusting screw 65 and a conical headed rod 62. A ring 71 housed in a groove 70 is guided for slight radial gauging movement by spring pressed rods 82, Figs. 13, 14 (not shown) and mounts a feeler 73 at its lower end and engages the plunger of the instrument at its upper end. The end blocks 2, 3 have machined surfaces 4, 5, 46, 47.
Patent GB-780293-A (GB)
Title: Improvements in containers for electrical condensers
IPC: H01G2/14
Filed: 1955-10-28
Abstract: 780,293. Capacitors. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Oct. 28,1955 [Dec. 11, 1954], No. 30856/55. Class 37. A container for a liquidimmersed roll-type capacitor comprises a cuboid formed from two similar sheet-steel pressings 1, 2 having flanges 5 along which the two parts are joined by welding. One pair of opposite walls of the container is provided with corrugations 4 to allow for expansion of the liquid within the container, while the flanges 5 serve as stiffening ribs on a second pair of walls. The flanges 5 also serve as cooling fins. Protuberances 3 are provided to accommodate leadthrough insulators.
Patent GB-281635-A (GB)
IPC: F02M69/50
Filed: 1927-11-17
Abstract: 281,635. Motorenfabrik Deutz Akt.- Ges. Dec. 2, 1926, [Convention date]. Regulating two or more pumps in combination; suction pipes. - In a fuel pump for a multicylinder internal-combustion engine, a rotatable valve m is arranged in the suction pipe d and is provided with a number of cams n<1>, n<2>, n<3> arranged 90‹ apart and adapted to close the respective inlet pipes e', e<2>, e<3> of the various pumps, so that the particular pump thus cut off from suction may be dismounted. The cams may be arranged to cut off groups of pumps. The delivery of the pumps to the engine may be interrupted by the usual by-pass valve k.
Patent GB-803983-A (GB)
Title: Means for applying paint
IPC: B05C17/12
Filed: 1956-10-11
Abstract: 803,983. Brushes. BUSHBY, J. P. Aug. 1, 1957 [Oct. 11, 1956], No. 30962/56. Class 19. A combination of a stippling brush and a tray for holding paint receptacles that allows of the brush applying paint to a surface to obtain a multi colour effect. The brush has bristle portions separated by relatively narrow bristle free areas and distributed in a rectangular pattern over a flat hilt, the portions being preferably four and disposed at each corner of a square. The tray so positions the square paint receptacles, that each receptacle will register with only one of the bristle portions as they are dipped simultaneously into the receptacles.
Patent GB-1067311-A (GB)
Title: An improved process for the preparation of saturated aliphatic alpha-sustituted di-acids
IPC: C07C51/353
Filed: 1964-08-04
Abstract: 1,067,311. Saturated alpha-substituted aliphatic diacids. BOUGIES DE LA COUR. Aug. 4, 1964 [Aug. 7, 1963], No. 30999/64. Heading C2C. Saturated alpha-substituted aliphatic diacids are prepared by the carboxylation of a mixture of oleic acid and formic (at least 80% pure) with a mixture of sulphuric acid and either phosphoric, glacial acetic, or mono-, di-, or trichloroacetic acids. The oleic and formic acid mixture is preferably emulsified, and the carboxylizing mixture is preferably sulphuric and 12-40% phosphoric or 5 to 20% of acetic or the chloroacetic acids. The alpha-substituted diacids are salted out, e.g. with acetic acid and further separated by distillation if necessary.
Patent GB-737554-A (GB)
Title: Self-hardening water-glass compositions yielding acid-resistant masses and a processfor making such compositions
IPC: C04B28/26
Filed: 1950-12-20
Abstract: Self-hardening, halogen free water-glass compositions comprise a sodium silicate solution of SiO2 to Na2O ratio of less than 2.75, or a potassium silicate solution of SiO2 to K2O ratio of less than 2.25, or a mixture of such silicates, the SiO2 to H2O ratio being always higher than 0.35, and the viscosity being not higher than 600 centipoises at 20 DEG C., an inert filler, and, as a hardening agent, at least one functional derivative of an organic aliphatic acid, which derivative has an equivalent weight of at most 60 and which is capable of reacting with the alkali constituent of the water glass. Derivatives specified are esters, e.g. glycol diformate, glycerol triformate, dimethyl oxalate, trimethyl citrate, glycollide preferably polymerized; amides, e.g. formamide, oxamide, triacetamide, malonamide; and anhydrides, e.g. those of succinic and maleic acids.  The derivatives may be used singly or in admixture. Specified fillers are quartz, silicates, e.g. glass, porcelain, chamotte and stoneware powders, graphite, silicon, and silicon carbide singly or in admixture.  An active silica may also be present.  Swiss Specification 182,616 is referred to.
Patent GB-1486347-A (GB)
Title: Heat insulation article
IPC: F24H1/18
Filed: 1976-08-10
Abstract: 1486347 Thermal insulation N BUCKLEY 10 Aug 1976 [25 July 1975] 31122/75 Heading F2X An article of heat insulation, e.g. a jacket for insulating hot water tanks, comprises heat insulating material disposed in a pocket, one portion of the side wall of which is formed of glass fabric and the remaining portion of plastics material or textile fabric coated with plastics material. As shown in Fig. 2, a pocket 2 filled with insulating material 4, e.g. fibre glass, mineral wool or textile wadding, has its side wall formed of two elongate pieces 6, 8, each extending along the length of the wall and having adjoining edges stitched together to form a seal 10. The piece 6 is formed of a woven glass fabric and the piece 10 of plastics material or a textile fabric formed from conventional fibres and coated with plastics material. The plastics material can be P.V.C. or polythene. In use the pocket 2 is placed as lagging on a hot water tank (Fig. 1, not shown) in conjunction with a number of similar pockets. The piece 6 of glass fabric is placed next to the side of the tank because of its excellent heat withstanding properties. The pointed ends of the pockets 2 fit nearly together over the dome of the tank and hooks 12 at these ends are attached together by a tape. The pockets 2 are also held in place by straps. If desired a portion of the side wall of the pocket can also comprise heat reflecting material.
Patent GB-819378-A (GB)
Title: Process for the production of protective or insulating layers on elements of iron or iron alloys
IPC: C23D5/02
Filed: 1956-10-12
Abstract: Insulating and protective layers are formed on articles consisting of iron or iron alloy by applying thereto an equeous solution of an alkali metal silicate, drying the articles at temperatures of up to 200 DEG C. and subjecting them to a heat treatment at a temperature higher than 650 DEG C.  The solution should have a density of less than 1.2 g/cc. and may further comprise (a) thickening agents such as metal oxides or metalloid oxides or compounds which form them, e.g. aluminium oxide, magnesium oxide, vanadium oxide, zirconium oxide, silicon dioxide, or metal carbonates or silicates, and (b) soluble compounds of arsenic, cobalt, copper, iron, lead and nickel.  The article is preferably pre-heated to, and maintained at, a temperature of 100 DEG -200 DEG C. during the application, which application may be effected by dipping or a mixed spraying process in which the silicate solution and a dispersion of the thickening agent are simultaneously sprayed from separate nozzles. Water-glass is used as the alkali metal silicate, and coatings may be produced on magnet plates, dynamo plates and transformer plates.  Specification 776,954 is referred to.
Patent GB-347151-A (GB)
Title: Improved construction or arrangement of theatre
IPC: E04H3/22
Filed: 1929-10-15
Abstract: 347,151. Theatres. MOULTON, A. J., Chateau de la VerriÞre, Mesnil-St. Denis, Seine-et-Oise, France. Oct. 15, 1929, No. 31273. Convention date, Oct. 31, 1928. Void [Published under Sect. 91 of the Acts]. [Class 20 (i).] A theatre has an auditorium rotatably mounted at the centre of a stage. As shown in vertical section in Fig. 2, an auditorium a is centrally disposed in a theatre the stage b of which almost encircles the auditorium. In the construction shown, the auditorium is a floating structure supported on a platform g<1> of a float g which is supported by a fluid contained in a pit h. Rotation of the float is produced by pumping the liquid through pipes by means of pumps j<1>, Fig. 3. Variations in the distribution and intensity of the weight of the loaded auditorium are compensated by an automatic control of the water supplied to or expelled from ballast tanks i. This control is produced by contacts arranged on the float and in the pit which, when touching, close an electric circuit suitably connected to water-delivery and compressed-air pumps. A curtain f, having a variable opening, encircles the auditorium and rotates at the same angular speed therewith, the said opening affording means of ventilation when facing a portion c of the stage in communication with the exterior. Passageways g4, g<5> permit of entrance to the theatre.
Patent GB-1235440-A (GB)
Title: Improvements relating to electric motive power installations
IPC: H02P7/298
Filed: 1969-06-20
Abstract: 1,235,440. Control of D.C. motors; charging batteries. ROBERT BOSCH G.m.b.H. 20 June, 1969 [21 June, 1968], No. 31325/69. Headings H2H and H2J. [Also in Division G3] A shunt-wound motor 10, adapted for regenerative and rheostatic braking, is supplied from battery 13 through power thyristor 25. The motor is started by adjusting pedal 53 so that regulator 46 receives a positive signal from reference potentiometer 52 and switches-on a pulse generator 42 to fire the thyristor 25. The armature current is detected by transducer 14 which feeds back a signal to comparator 47. As the armature current increases, the regulator 46 is changed-over to switch-on the generator 43. Thyristor 29 is fired and operates through a commutating capacitor 28 to quench the thyristor 25. This action is repeated to regulate the mean armature current. The motor has a free-wheeling diode 18. The mean current through field winding 12 is kept at a maximum for starting, and is afterwards reduced in a regulated manner whereby the mean armature current is maintained at a constant value. To introduce a braking operation, the field excitation is increased and the armature passes current to the battery through choke 21 and diode 22. If the battery-voltage increases to a value at which there is a danger of gassing, a voltage regulator 54 responds and supplies a signal to comparator 47. The thyristor 25 becomes conductive and current passes through braking resistor 34 to reduce the battery-voltage. The magnitude of the total braking-current is adjustable by pedal 35, the generated current being used either to charge the battery or to heat the resistor 34, according to the state of charge of the battery. A diode 27 dispenses with the need for an interrupting switch between the points 26, 17, during braking operation. The field winding may be supplied through a further thyristor.
Patent GB-1058816-A (GB)
Title: Improvements in silphenylene-containing polymers
IPC: C08G77/00
Filed: 1964-08-04
Abstract: A polymer having the formula <FORM:1058816/C3/1> wherein n is a number, e.g. of from 3 to 50, can be made by reacting 1,4-bis(diphenyl-hydroxysilyl) -benzene with diphenyldichlorosilane in the presence of a hydrogen halide acceptor, e.g. pyridine, and recovering the reaction product.  The reaction may be effected in a solvent, e.g. tetrahydrofuran, and at less than 50 DEG  C.  An example is given.  Uses.-For coating electrical conductors.
Patent GB-444334-A (GB)
Title: Improvements in or relating to the manufacture of filter tips for cigarettes
IPC: A24D3/02
Filed: 1934-11-02
Abstract: 444,334. Cigarette-making machines. MAY, R. F., 9, Manor Road, Potters Bar, Middlesex. Nov. 2, 1934, No. 31S64. [Class 130] A filter-tip filling is produced by subjecting to compression, a tube formed by two or more layers of strip material in concentric or spiral formation. The compression is exerted towards the centre and applied initially at a number of spaced points so that the material of which the wall is formed is folded inwardly or is deformed to fill the central hole ; subsequently the deformed filling is shaped to a circular cross-section. The filling is placed in a chamber 2 and compressed by plungers or rollers 3 and the deformed filling is consolidated into a circular crosssection by passing it through a tapered bore 4 or ejecting it into a chamber where it is acted on by presser jaws. The rollers may feed the filling through the bore 4. In modifications: (1) the filling is deformed by being moved axially between rollers at a fixed distance apart ; (2) the filling is forced in succession through tapering passages of square or circular form and (3) a core, formed by a string, cord or other filling, is arranged in the central hole before the tube is compressed.
Patent GB-649238-A (GB)
Title: Improvements in or relating to chassis of rail-road vehicles
IPC: B61G9/04
Filed: 1948-12-07
Abstract: 649,238. Railway vehicles. ALLEN & SONS (TIPTON), Ltd., W. G., and HOWELL, E. J. Dec. 7, 1948, No. 31593. [Class 103(vi)] A mine car has longitudinal members 1 connected by cross members 2 and the ends of the longitudinal members are provided with auxiliary channel members 5 having slots 14 to accommodate the coupling plates of draw gear. The outer ends of the channel members 5 may also be welded to a buffer beam 11.
Patent GB-699107-A (GB)
Title: Improvements relating to plants for the treatment of bulk material
IPC: F26B17/00
Filed: 1950-12-29
Abstract: 699,107. Cooling furnace charges. SMIDTH & CO. AKTIESELSKAB, F. L. Dec. 29, 1950 [Dec. 30, 1949], No. 31616/50. Class 51(ii) [Also in Group XXX] A plant for the treatment of bulk material by the passage of gas through it comprises an endless gas-permeable conveyer having upper and lower runs, means for feeding material to the upper run, .means for transferring to the lower run material which has been conveyed by the upper run, so that the material is conveyed in the reverse direction by the lower run, and enclosed air chambers serving to supply gas to and receive gas from the layers of material on the two runs, the chambers being so disposed that gas is caused to pass through the layer of material on each run either as a single stream through both runs in series or as two separate streams, one through each run. As shown applied to the cooling of cement clinker discharging from a rotary kiln the clinker travels along the upper run 15 of an intermittently driven conveyer and then along the lower run 16 before being discharged through an opening 26 cooling air being passed through both runs. Boxlike structures 6, 11 with perforated tops 7, 10, are provided to support the respective runs 15, 16, for the greater part of their travel. Cooling air is supplied by fans or other devices to the boxes 6, 11, and flows upwards through the tops 7, 10, the conveyer runs 15, 16, and the material thereon. The air passing through the run 15 enters a chamber 24 and flows to the kiln to support secondary combustion whilst the air passing through run 16 enters a chamber 21 connected to the burner 29 by a pipe 28 which also leads to a chimney. The chamber 21 is also connected to the chamber 24 by damper controlled ducts 22 so that air from the chamber 21 may be used for either primary or secondary combustion or both. Clinker too large to pass through the conveyer on to the lower run 16 drops down a shoot 33. The conveyer drive is effected by driving the roller 14 through a ratchet mechanism 17 by a reciprocating piston which moves in a pivotally mounted cylinder 18. In a modified plant, Fig. 3, crushing apparatus 32 is placed between the upper and lower runs 15, 16. A screen may be provided between the run 15 and crusher 32 to allow undersized material to pass directly to the lower run 16. A screen may also be provided without a crusher fine particles being then removed by screening so that only larger particles are delivered on to and treated on the lower run The invention may be applied to the preheating, calcining or burning of raw cement whilst in metallurgical processes ores may be similarly treated. Cement may. be artificially aged by blowing CO 2  through it. Air or gas may be forced through material to remove undesirable constituents, e.g. dust. The material may be transferred from upper to lower runs by scrapers and a hopper &c. The crushing apparatus may be placed outside the conveyer. Specification 699,108 is referred to.