baber/WOPTO huggingface dataset:
Patent GB-1402174-A (GB)
Title: Brazing furnaces
IPC: B23K1/008
Filed: 1972-08-08
Abstract: 1402174 Brazing SOC ANON DES USINES CHAUSSON 8 Aug 1972 [9 Aug 1971] 37036/72 Heading B3R [Also in Division F4] A continuous brazing furnace for aluminium workpieces comprises a drying zone I through which hot air is passed to an outlet 6 to evaporate a flux solvent, a preheating zone II heated by burners 4a and two heating zones III, IV through which air is passed in a dried cycle and heated by electric resistances, 25, 25a. The gases issuing from zone II may be at least partly recycled. The temperature just reaches the brazing point in the zone IV, and the workpieces are cooled in a zone V having intermittently operated burners 4b and direct through flow of air, and further cooled by sprays 30 in a zone VI. Fans for each zone are arranged so that the pressure is greatest in the brazing zone IV, and reduces progressively to the drying zone I and the final zone VI to prevent contamination. The zones may be separated by partitions, or merely by the gas flow produced. The drying zone I may be heated by burners 16, Fig. 3, the air being fed around the burner to a combustion chamber 15 and through diffusers 31, 32 to the outlet 6. The diffusers may extend through the zones I-IV. The drying gases may be taken from the gases recirculated through the preheating zone II and fed to zone I. Make up air is fed to the heating zones III and IV through treatment apparatus 28, 28a, in order to dry and purify the gas. The workpieces, radiators 1, are carried on a conveyer 2, the radiators carrying a coating of brazing alloy and being flux dipped.
Patent GB-1003882-A (GB)
Title: Improvements relating to resin-containing articles
Inventor: CHAPMAN LESLIE VICTOR
Filed: 1960-10-28
Abstract: 1,003,882. Moulding plastics. ENGLISH ELECTRIC CO. Ltd. Oct. 23, 1961 [Oct. 28, 1960], No. 37062/60. Heading B5A. Moulded articles, e.g. electrical insulators, are made by impregnating a mixture of glass fibre and quartz sand, zircon sand, granular calcined flint or coarse silicon sand and high melting point granular hardening agent with a quantity of low-temperature epoxy resin to form a preform in a wood, plaster, polyethylene, P.V.C. or cardboard mould and which is subsequently removed therefrom and immersed in a mixture of high temperature epoxy resin and catalyst which is solidified by raising the temperature to 200‹ C. to melt the granular hardening agent. Preforms of large electrical insulators can be made in a number of sectional moulds, each being fitted over the previous one when filled and being then itself filled. Polyester resin can also be employed and the final proportion of filler to resin may be 8 to 1.
Patent GB-1182384-A (GB)
Title: Improvements relating to Space Heaters
Inventor: RUSSELL WILLIAM MORRIS
IPC: F24H9/20
Filed: 1967-08-12
Abstract: 1,182,384. Supply systems for storage heaters. SIMPLEX ELECTRIC CO. Ltd. 12 Nov., 1968 [12 Aug., 1967], No. 37133/67. Heading H2H. A space heater includes a heat storage body indirectly heated from a first off-peak supply, means for establishing air flow past the storage body, and a direct electrical heater in the air flow path. The direct heater is arranged to be energized from a second supply only when the temperature of the storage body is above a predetermined temperature. In the embodiment shown in Fig. 1, two thermal switches Sl, S2 are positioned in the air duct 19 between the storage body 10 and the direct heater R2. In normal conditions, i.e. when the air temperature in the duct is high, the switch S1 is open and S2 is closed so that heater R2 is not connected. If the temperature falls below a first level, S1 closes and heater R2 is energized. Should the temperature fall below a second, lower level, S2 will open and heater R2 will be disconnected in order to prevent the taking of power from the second (normal) supply for too long a period. A thermostat may be arranged to control the relative amounts of air propelled by the fan to the storage body and direct to the heater R2. The thermostat may be situated near the heater outlet 23 and operate to maintain the temperature of the expelled air constant. In a modification, Fig. 2 (not shown), mixing of air from the storage body with cold air takes place in the fan itself. The switches S1, S2 may be arranged in various places in the air flow system, or may be combined into a single switch.
Patent GB-619634-A (GB)
Title: Improvements relating to internal combustion turbines and like apparatus working with gases at high temperatures
IPC: F01D5/18
Filed: 1946-12-17
Abstract: 619,634. Making turbines. MOORE, N. P. W., and GROOTENHUIS, P. Dec. 17, 1946, No. 37145. [Classes 83 (ii) and 83 (iv)] [Also in Group XXVI] Powder metallurgy. - Blades, combustion chamber walls and other parts of gas turbines and like apparatus which are subjected to very high temperatures are made wholly of, or with at least a surface layer of, porous material through which a cooling fluid is caused to percolate. The porous material may be produced by sintering powdered metal, preferably stainless steel, or by spraying metal, or may be of ceramic material. Turbine blades made wholly of sintered metal are made hollow with passages through the roots for the admittance of a cooling fluid. The roots are strengthened by using a smaller particle size, or by cementing with a low-melting point alloy. A blade may have a non-porous metal core with grooves k, Fig. 4, in its surface which run into cross grooves l and so make connection with a cooling fluid inlet s in the root. The core is then covered with a sintered metal which is kept out of the grooves. In another form, a solid core has several lengthwise bores and smaller distributing bores radiating from them to the surface of the core and the inner surface of the porous shell. In another form, the blade core is formed from sheet metal welded at the trailing edge and its surface is covered with perforations. The blade surface may be formed by bending a sheet w, Fig. 8, of porous metal, and this is spot-welded to a central post x integral with the root y. Blades for different turbine stages may be made with different degrees of porosity and individual blades may be made with a varying porosity to give greater porosity where a greater cooling effect is necessary. The cooling fluid may be a gas such as air or carbonic acid gas, or it may be a liquid. In the latter case, the flow is arranged to secure the evaporation of the liquid at, or just below, the blade surface. The cooling fluid may be a fuel and its combustion on emergence used to provide re-heating of the working fluid within the turbine. Fig. 9 shows a turbine shaft 14 protected from the hot gases, which enter the casing at 10, by a sleeve 11 of porous material. A cooling fluid is admitted at 12, percolates outwards through the sleeve 11, and passes into the turbine rotor and so to the turbine blades.
Patent GB-786026-A (GB)
Title: Improvements in means for the visual indication of numbers and other information
IPC: G09G3/04
Filed: 1950-06-23
Abstract: 786,026. Electric digital-data-storage apparatus. DIRKS, G. June 23, 1950 [Oct. 1, 1948], No. 37205/54. Divided out of 786,021. Class 106 (1). [Also in Group XX] Magnetizable signal record means has successive areas in the direction of sensing corresponding to successive columns of characters and moves in synchronism with a carrier having sets of optically-reproducible characters thereon which, whilst moving past a viewing position, may be selectively illuminated by a flash tube controlled by the sensing means. As employed for reading out data magnetically recorded on the storage disc 1 of an electronic computer, groups of digits 0 to 9 are arranged in different sectors of the disc respectively in the same angular positions as corresponding digit areas d of a magnetic track a. Magnetization of one out of ten elemental areas in each section of the track represents a decimal digit. The groups of indicating digits corresponding to the various sections of the single magnetic track a are on separate tracks 4, 5, 6, 8, 7 of the disc. As a magnetized spot passes the reading head 15 a gas tube 18 is fired causing a brief flash from a tube 12 which illuminates the digit positioned in the aperture 13 at that instant. At a disc speed of 50 rotations per second the various digits of the recorded number appear to be continuously illuminated in the reading aperture. The complement of the recorded number may be read from a second set of indicating tracks 8, 9, 10, 11 when the mask 14 is moved across. This may be accomplished by an electromagnet against a return spring. Means for suppressing unnecessary zeros and indicating commas and other signs are also mentioned. A magnifying lens may be used for reading the result indicated. The disc may be of glass with suitable magnetizable coatings or the magnetic record may be on a separate member moving in synchronism with the indicating member. In another embodiment groups of digits 0 to 9 are arranged on a transparent cylinder (Fig. 4, not shown), and a separate lamp is provided for each denomination.
Patent GB-806990-A (GB)
Title: Improvements in preassembled screw-threaded fastener and lock washer units
Inventor: POUPITCH OUGLJESA JULES
IPC: F16B39/26
Filed: 1956-12-05
Abstract: 806,990. Locking nuts &c. ILLINOIS TOOL WORKS. Dec. 5, 1956, No. 37209/56. Class 89(1). A fastener-unit comprises a sheet-metal lock-washer 14, Fig. 1, and a screwedfastener, e.g. a screw 12, the washer having a split-ring-body with inner and outer frusto-conical parts 28, 24, Fig. 2, respectively, connected by a radius 26. The body is twisted to helical-form, and when the washer is clamped the helix is flattened and the body twisted, as shown in Fig. 2. The bearing-face 18 of the screw is shaped to engage the washer fully in this condition. Radial protrusions may be provided on said bearing-face to interlock with grooves in the inner-periphery of the body. The outer-periphery may have spikes to dig into the work.
Patent GB-1442443-A (GB)
Title: Foam cleaning composition
IPC: C11D1/00
Filed: 1973-08-07
Abstract: 1442443 Foam cleaning composition HOECHST AG-Aug 1973 [7 Aug 1972] 37340/73Heading C5D Foam compositions for the cleaning of textiles such as upholstery and carpets comprise at least one anionic surfactant and an aqueous dispersion or emulsion of at least one polymeric fluorine-containing acrylic acid derivative obtained from a compound of formula wherein X is H or F, a is 4 to 14, Y is H, Cl, methyl or cyano and T is a divalent aliphatic or aliphatic-aromatic group, which dispersion also includes at least one salt of a monothioester of a thiosulphuric acid containing one or more fluoroalkyl groups (a Bunte salt), preferably of formula : X.C a F 2a -V-S 2 O 3 M, wherein X and a, have the same meaning as defined above, V is a bivalent aliphatic or aliphaticaromatic radical having at least one, but not more than a methylene groups and M is a monovalent cation. The anionic surfactant may be an α-olefine sulphonate or a lauroyl sarcoside salt. The compositions may be in the form of concentrates to be diluted with water or may be applied as aerosols.
Patent GB-965845-A (GB)
Title: Meat packaging tray
IPC: B65D65/38
Filed: 1962-10-04
Abstract: 965,845. Laminates. C. E. PALMER. Oct. 4, 1962, No. 37507/62. Heading B5N. [Also in Division B8] A blank for a transparent meat container comprises a semi-rigid plastics sheet 2 with perforations 6 spaced about it encased in an envelope of two sheets of flexible gas permeable plastics film 4, the two sheets of film being sealed about their periphery. The semi-rigid sheet may be of a biaxially oriented polystyrene and the films may be of cellulose acetate. Alternatively, polyethylene, rubber hydrochloride, polyvinyls, or various cellulose ethers and esters may be used.
Patent GB-1527613-A (GB)
Title: Composition for the manufacture of non-woven material
IPC: C08K7/04
Filed: 1975-09-13
Abstract: 1527613 Fibre-reinforced compositions VSES N-I INST PO ZASCHITE METAL OT KORROZ 13 Sept 1975 37711/75 Headings C3V and C3R  A composition for the manufacture of non- woven materials of high thermal stability, and chemical and wear resistance comprises 2-8 wt. per cent carbon fibres; 1-4% synthetic polymeric fibrous material; 2-16 wt. per cent of pyrolytic carbide fibres; 1-8 wt. per cent of silicon or boron carbide: 1-2 wt. per cent of silicon or boron nitride; 6-13 wt. per cent of saturated and unsaturated fluorinated hydrocarbons with a heat resistance of 350-450‹ C.; 2-3 wt. per cent of thermosetting resins, 1-2 wt. per cent of a curing agent, a solvent making up the balance. The synthetic polymeric fibrous material may be, e.g. polytrifluoroethylene, polypropylene, modified polyvinyl alcohol, or poly(ethylene terephthalate). The fluorinated hydrocarbon may be a copolymer of hexafluoropropylene with vinylidene fluoride or tetrafluoroethylene and the thermosetting resin may be an epoxy resin, a phenol resin, furfural resin, polysiloxane resin, urea resin, or polyester, e.g. a modified furfuralacetone-phenolpentanediol resin, an acenaphthylene-phenol formaldehyde resin, aquo-emulsion phenol formaldehyde resin or an epoxy resin. The curing agent may be polyethylene polyamine, ditetrabutylphenol formaldehyde or sulphosalicylic acid.
Patent GB-320289-A (GB)
Title: Improvements in or relating to paper bags and the like containers
IPC: B65D30/24
Filed: 1928-12-21
Abstract: 320,289. Becker, F. Dec. 21, 1928. Paper bags.-In closing the end of a multi-ply paper bag, paste is applied between the plies for a short distance from the end of the bag tube and a reinforcing strip 5 of paper or other material, which is W- or M-shaped in cross section and has a row of perforations 1<x> in its central or V- shaped portion, is applied to the end, the central V-shaped portion 3 being disposed between the walls 4 of the bag; the outer portions of the strip are pasted to the exterior of the bag walls, the inner portions being left free, and the strip and walls are then secured by a line of stitching. The perforations. and the stitches act as vent holes during the bag filling operation.
Patent GB-1487342-A (GB)
Title: Load-bearing structural element
IPC: F16L59/00
Filed: 1974-08-29
Abstract: 1487342 Fire-resisting panel O A BECKER 29 Aug 1974 [30 Aug 1973] 37872/74 Heading A5A [Also in Divisions B5 and El] A laminated panel (Divs. B5 & El) has one surface formed of a corrugated sheet, the corrugations being filled with asbestos and then coated with plaster to form a wall of a room. A water-filled pipe with thermostatically controlled openings is provided in the plaster so as to soak the plaster and asbestos in the event of a fire. A similar pipe may be provided on the front surface of the plaster so as to form a curtain of water trickling down the wall. The plaster may be coated with a carbonate and the water is arranged to pass through a container having soluble chemicals which re-act with the carbonate to produce carbon dioxlde to assist in extinguishing the fire.
Patent GB-1361990-A (GB)
Title: Electrophotographic reproduction
Inventor: FROSTICK T C
IPC: G03G5/05
Filed: 1971-08-12
Abstract: 1361990 Electro-photographic materials GESTETNER Ltd 10 Aug 1972 [12 Aug 1971] 37894/71 Heading G2C An electro-photographic sheet exhibiting low light fatigue comprises a support coated with a dispersion of dye-sensitized ZnO in a binder comprising 3 to 100 wt per cent of polyvinyl butyral wherein the extent of butyralation is at least 85%. In an example, the binder is polyvinyl butyral having a hydroxyl content of 9 to 13%, a butyral content of about 88%, an acetate content of 0 to 2À5% and an acid value below 1, and the photo-conductive composition also includes alezarin cyanine green, erythrosin, dibromofluorescein or cyanoxin, phthalic anhydride and plasticizer.
Patent GB-1084568-A (GB)
Title: Improvements in or relating to straight bar knitting machines
Inventor: BROWN LEONARD
IPC: D04B35/10
Filed: 1965-09-04
Abstract: 1,084,568. Knitting-machines. WILLIAM COTTON Ltd. Aug. 24, 1966 [Sept. 4, 1965], No. 37897/65. Heading D1C. A cam operated arm 6 having a yarn controlling member 1 for deflecting a yarn extending between a supply and the needles of a straight-bar machine to thereby provide surplus yarn at the end of each carrier draw, also carries a yarn tensioning arm 16 which is pivotally mounted on the arm 6 and resiliently engages the yarn under the influence of a spring so when the arm 6 is deflected by its cam to provide a light tension on the yarn to compensate for tension fluctuations in the yarn which occur during needle manipulation or fashioning. Specification 771,757 is referred to.
Patent GB-1472195-A (GB)
Title: Manufacture of
IPC: C08F2/06
Filed: 1974-08-30
Abstract: 1472195 Polymerization process BASF AG 30 Aug 1974 [31 Aug 1973] 37930/74 Heading C3P In the continuous bulk or solution polymerization of an ethylenically unsaturated monomer producing a polymer soluble in the monomer or solvent, part of the high viscosity polymerization medium having a viscosity of at least 100 poise is mixed with at least part of the low viscosity feed to the polymerization zone of viscosity less than 10 poise and the mixture continuously fed to the polymerization zone. This low viscosity feed may be formed from fresh monomer, condensed monomer vapourized from the reaction zone to control the temperature and initiator. Examples describe the copolymerization of alpha - methyl styrene/ acrylonitrile and styrene/maleic anhydride in solution.
Patent GB-975110-A (GB)
Title: A short-circuit current limiting device
IPC: H02H9/02
Filed: 1961-10-24
Abstract: 975,110. Protective arrangements. BROWN, BOVERI & CO. Ltd. Oct. 24, 1961 [Oct. 26, 1960; Feb. 16, 1961; April 20, 1961; May 12, 1961], No. 38010/61. Headings H2B and H2H. A current limiting iron cored series reactor for a distribution line is arranged to saturate at <SP>1</SP>/ 100  of the amplitude of the rated current of a protecting circuit breaker, and the reactance under saturated conditions is made equal to between 0.5 and 10 km. of the line. A number of arrangements are described in the Specification for biasing the reactor by an auxiliary A.C. or D.C. winding, which is energized by a series line transformer, or connected across the breaker contacts. The voltage current relation within the biasing range should be substantially linear. The reactor may be alternatively shunted by a capacitor to lower its natural frequency. The reactor may be structurally combined with the circuit breaker as shown in the figure in which the reactor is an iron ring or sleeve 24 mounted on an intermediate insulator surrounding one of the conductors 27. A conductor 26 is connected to the central resistors 23 interposed between the arc control chambers 21, 22 to which the input terminal 25 is attached.
Patent GB-948787-A (GB)
Title: Apparatus for carrying out an exchange of substance between liquid and liquid or liquid and gaseous phases
Inventor: KABISCH GERHARD
IPC: B01D11/04
Filed: 1960-11-04
Abstract: An apparatus for exchanging a substance between immiscible liquids comprises two or more substantially vertical columns each of which has an upper and a lower inlet and an upper and a lower outlet, the lower parts of said columns being connected by a tube containing a liquid or a gas in which there is a piston arranged to produce vibrations in the different columns in opposite senses. The <PICT:0948787/C1/1> <PICT:0948787/C1/2> <PICT:0948787/C1/3> <PICT:0948787/C1/4> liquid if employed in the tube, may be different from those in the columns and diaphragms may be provided to prevent mixing. Figs. 2a-2c show the arrangement of a piston in a tube at the bottom of two columns (3, 4, Figs. 2a, 2b) or four columns (9-12, Fig. 2c), diaphragms (7, 8 or 13-16) being provided: the volume surrounding the piston is filled with a liquid. Fig. 3 shows an arrangement for use with a corrosive liquid, in which a gas is provided in the piston chamber.  As a result of the construction according to the invention it is possible to dispense with sealing round the piston.
Patent GB-337264-A (GB)
Title: Improvements relating to acoustic instruments
IPC: H04R1/28
Filed: 1929-12-13
Abstract: 337,264. Celestion, Ltd., and French, C. Dec. 13, 1929. Loud-speakers.-In order to provide a relatively long path for the sound waves emitted from the inner surface of the diaphragm b of a loudspeaker or like sound-reproducing instrument before they can impinge on the outer. surface, the casing c is fitted internally with one or more baffles c<1>, d<1>, Fig. 3, preferably projecting alternately from the front c<2> and back d so as to provide a tortuous path between the diaphragm and an outlet e. The casing may either be circular, in which case the baffles c<1>, d<1> are constituted by concentric cylindrical elements, or it may be rectangular, in which case parallel plane baffles are employed. In a modified construction the baffles are inclined so that a divergent passage of continuously increasing cross-sectional area is furnished. In a further modification, Fig. 5, the diaphragm b is located near the upper portion of the casing c, the outlet e is near the base at the front, and the baffles c', d' are of curved formation.
Patent GB-1066313-A (GB)
Title: Improvements in or relating to frequency analysers
IPC: G01R23/00
Filed: 1963-10-02
Abstract: 1, 066,313. Frequency analysis. HONEYWELL Inc. Oct. 2, 1963 [Oct. 2, 1962], No. 38883/63. Heading G1U. A frequency analyzer contains filters to select different frequency components in succession from a composite input signal and contains adjustable signal attenuators which operate on the selected frequency components to bring the amplitude of each within a predetermined amplitude range. In advance of being selected each frequency component has its amplitude sensed so as to derive a control signal for automatically adjusting a signal attenuator so that when the frequency component is subsequently applied to that attenuator it will be attenuated to an extent appropriate to bring it within the required predetermined range. In one embodiment a variable frequency input signal to be analyzed is separated successively into its different frequency components by being heterodyned in a modulator 1 with successively increasing frequencies from a stepped oscillator 3. The output from the modulator is passed to a selective data filter 4, which selects a frequency corresponding to the component under examination and thence to a switching network 5 where the selected signal is directed to an appropriate attenuator e.g. 8 and thereafter to a read out device 15. The switching network may be a relay matrix having relay coils sequentially and selectively energized under the control of a programmer 6. A second filter 12 is arranged so that it selects the frequency component next in succession to that selected at the same time by the filter 4 in the output of the heterodyne modulator. The signal from this filter is detected by the sensor 14, the output of which passes through appropriate connections in the switching network to adjust the next attenuator 9, so that when the frequency component next in succession is passed to that attenuator, the output thereof for passing to the read out device 15 will fall into the predetermined amplitude range. The switching network 5 and programmer 6 are arranged so that, after the selected frequency component has been recorded and the next attenuator adjusted to receive the next component, a signal is provided which steps the oscillator 3 so that the heterodyne output from the modulator 1 is changed and the next component is selected by the filter 4. This is fed via the switching arrangement to the next attenuator 9, while the attenuator 10 is automatically adjusted to receive the next component, and the attenuator 8 is returned to its reset position. The analysis proceeds in this way through all frequency components. An alternative arrangement using filter banks instead of the single filters 4 and 12 so that the need for heterodyning with a stepped oscillator output is eliminated is also described Fig. 2 (not shown).