baber/WOPTO huggingface dataset:
Patent GB-902747-A (GB)
Title: Improved bonding film
IPC: C09J7/35
Filed: 1958-07-10
Abstract: 902,747. Composite sheet material; laminates. MINNESOTA MINING & MANUFACTURING CO. July 10, 1958 [July 10, 1957], No. 22183/58. Class 140. A composite flexible sheet material comprises a room-temperature solid, heat-curable, rubber base/phenolic adhesive bonding layer characterized by being curable at elevated temperatures to a non-brittle thermoset condition, and a room-temperature solid and heat fluidizable, heat-curable, epoxy resin adhesive bonding layer characterized by being (a) flowable as a viscous liquid of high filletting action as it is elevated in temperature, and (b) curable from said flowable state to a solid thermoset state at higher elevated temperature, said epoxy resin layer comprising a roomtemperature solid epoxy resin initially softening at a temperature between about 100 and 200 F., and a heat-activatable curing agent for said epoxy resin. The solid epoxy resins suitable have on the average a 1,2-epoxy equivalency greater than 1.0; many are specified. The heat-curable elastomer/phenolic layer is formed from a blend including a dienetype rubbery elastomer, a heat-activatable curing agent, and between about 25 to 500 parts by weight of heat reacting, thermosetting, alcohol soluble phenol-aldehyde resin for every 100 parts of elastomer. The preferred elastomer is butadiene/acrylonitrile (buna N). The sheet material 10 is prepared by calendering the elastomer/phenolic blend to form a film 11, hot melt coating the epoxy resin 12 on to it and, if desired; placing preferably on the molten epoxy layer a porous, loosely woven, unbleached, unsized cotton cloth 13 (e.g. cotton scrim). Alternative materials may be woven or non-woven webs of materials such as cotton, glass fibres, metal wire or synthetic fibres. If desired, the scrim layer may be within the epoxy composition layer instead of on it, or as a network between the epoxy layer and the elastomer phenolic layer, or within the elastomer layer. Sandwich structures for aircraft construction may be made by placing the sheet 10 with its elastomer/phenolic layer 11 next to cleaned and etched aluminium skin panels 14 (Fig. 4), and with its scrim cloth layer 13 contacting a honeycomb structure of aluminium cell walls 15 and cells 16. The honeycomb structure is placed between two skin panels 14, as shown. On bonding by heat and pressure the epoxy resin fluidizes, passes through the pores of the scrim cloth and is drawn by capillary action along the sides of the cell walls (" filletting ") as shown in Fig. 4. Continued increase in temperature causes curing to a thermoset condition.
Patent GB-754394-A (GB)
Title: Improvements in or relating to absorption refrigeration systems
IPC: F25B39/04
Filed: 1954-07-29
Abstract: 754,394. Refrigerating. CARRIER ENGINEERING CO., Ltd. July 29, 1954 [Sept. 1, 1953], No. 22232/54. Class 29. In a continuous cycle absorption system utilizing water as the refrigerant and a solution as the absorbent; the refrigerant is generated in an inner shell 23, Fig. 2, by a heating coil 30, 31, the vapour passes out of the inner shell through slots 35 and condensation is effected by a cooling coil 25 disposed in the space between the inner shell and an outer shell 22. The cooling coil comprises several parts connected in parallel between inlet and outlet cooling water headers 26, 27. In a modified form, Fig. 4, the condenser 42 is located in the inner shell 41, which is open at its top and the heating coil 43 is located between the inner and outer shells 41, 40. Condensate is collected by a member 47 and is withdrawn by a tube 48 protected from the heat of the generator by a tubular member 49.
Patent GB-902869-A (GB)
Title: Protective devices for protecting magnetic sound record sheets from stray magnetic fields
IPC: B65D85/57
Filed: 1959-06-29
Abstract: 902,869. Envelopes &c. TOKYO DENKI KAGAKU KOGYO KABUSHIKI KAISHA, and HOSHINO, Y. June 29, 1959 [July 1, 1958], No. 22248/59. Class 146 (2). [Also in Group XVII] An envelope for sending a magnetic sound record sheet through the post has an inner lining M of high magnetic permeability metal to protect the sheet from external magnetic influences. The lining may be omitted from the region along which the envelope is slit to open it. Specification 833,266 is referred to.
Patent GB-1136457-A (GB)
Title: Improvements in the making of a paper having an electro-conductive layer
IPC: G03G5/10
Filed: 1966-05-19
Abstract: 1,136,457. Polymers. GALGON CORP. 19 May, 1966 [9 June, 1965], No. 22364/66. Heading C3P. [Also in Division B2] A water-soluble polymer consists essentially, e.g. at least 90%, of repeating units of the formula where R 1  is an alkyl group of 1 to 4 carbon atoms, R 2  is the same as R 1 , e.g. methyl, or is a #-propionamido group. The polymer may be derived from the polymerization of monomers of formula The polymer may be formed by copolymerizing the said monomer with up to 10% by weight of a monomer comprising acrylamide, N- methylol acrylamide, N-vinyl 2-pyrrolidone, or a monomer of formula where A- is an anion, e.g. Cl-, R 3  is an allyl group, and R 4  is either R 2  or R 3 , e.g. methyl groups. The polymer may be cross-linked with 0À001 to 10% by weight of a water-soluble polyunsaturated monomer copolymerizable with a diallyl quaternary ammonium monomer, or 0À001 to 1À0% of one or more of the monomers: methylene - bisacrylamide, triallyl amine hydrohalide salts, lower alkyl triallyl quaternary ammonium compounds and allyl polysubstituted alcohols. The polymer may be poly - N - methyl - N - (# - propionamido) - 3,5- methylene piperidinium chloride, poly - (N,N. dimethyl - 3,5 - methylene piperidinium chloride), which may be cross-linked with from 0À1 to 1% by weight of the polymer of methylene bisacrylamide.
Patent GB-703792-A (GB)
Title: Improvements in or relating to flotation devices for amphibious vehicles
IPC: B60F3/00
Filed: 1951-09-25
Abstract: 703,792. Amphibious vehicles. STRAUSSLER, N. P. S. Sept. 24, 1952 [Sept. 25, 1951], No. 22372/51. Class 113(2) In a collapsible hull for amphibious motor driven vehicles of the kind having a continuous wall or skirt 3 of impervious flexible material secured by its lower margin to the body or to decking 1 extending from the vehicle body 2 to provide a watertight enclosure to afford buoyancy to the vehicle, means for extending the skirt and maintaining it in extended position comprise continuous upper and lower stiffening frames 4, 5, and a plurality of collapsible struts each of which comprises an intermediate member 7 pivoted at 9 intermediate its ends to the lower frame 5 and upper and lower members 6, 8 pivoted at their outer ends to the upper frame at 9a and at 10 to a port fixed to the vehicle body and pivoted at 11, 12 at their inner ends to the intermediate member 7 for movement about axes which are located one on either side of the axis of the strut in its erected position in which stops 14, 15 come into engagement. Fluid pressure operated piston rods 24 act simultaneously and directly on the lower members 8 of the struts for initially moving them to positions where thereafter the struts and skirt move under gravity to their collapsed positions. Means for erecting the hull comprise inflatable envelopes 16 each secured at its upper end to the lower frame. 5 and at its lower end to a base 18 fixed to decking 1, the base having valves whereby the envelopes can be inflated and deflated.
Patent GB-1002878-A (GB)
Title: Improvements in or relating to antihypertensive compositions
IPC: A61K31/54
Filed: 1964-05-29
Abstract: An antihypertensive composition comprises as active ingredients methyclothiazide or one of its alkali metal salts and pargyline or one of its pharmaceutically acceptable, acid-addition salts. Methydothiazide and pargyline are 2-methyl-3-chloromethyl-6-chloro-7-sulphamyl-3, 4-dihydro-1, 2, 4-benzothiadiazine-1, 1-dioxide and N-methyl-N-propargyl benzylamine respectively.  Specified acid addition salts of pargyline are the hydrobromide, sulphate, phosphate, picrate, succinate, citrate, tartrate, fumarate, oxalate, benzoate, salicylate, glycolate, nicotinate, ascorbate, maleate and lactate. The active ingredients may be admixed with conventional solid carriers and compressed into tablet form.
Patent GB-1396331-A (GB)
Title: Process for preparing reinforced polyimide structures
IPC: C09J179/08
Filed: 1972-05-12
Abstract: 1396331 Laminates E I DU PONT DE NEMOURS & CO 12 May 1972 [17 May 1971] 22420/72 Heading B5N [Also in Division C3] A process for preparing a laminate comprises curing a structure comprising a plurality of layers of a reinforcing agent impregnated with a binder solution containing a polyamide-acid or -ester obtained by reacting 2,2-bis-(3,4-dicarboxyphenyl)-hexafluoropropane dianhydride (or the reaction product thereof with water or an alcohol in amount insufficient to form the tetra-ester) with a diamine wherein R<SP>1</SP> is -O-, -S- or -O-phenylene-O-, and which on curing is converted to a meltfabricable aromatic linear polyimide containing the unit where R is derived from an above specified diamine an n corresponds to an inherent viscosity of at least 0À15 (0À5 g./100 ml. in H 2 SO 4 ). The polyimide preferably has an I.V. at least 0À3 and a Tg of 220 to 385 C. The reinforcing agent may be fibres, e.g. of carbon, glass, boron or metal, or particulate, e.g. asbestos, mica, graphite, silicon carbide whiskers or P.T.F.E. The polymer may be modified by incorporating phthalic anhydride. A procedure is described in which carbon fibres are passed through a solution of the polyamide-acid or -ester, aligned in juxtaposed relationship and partially cured at about 150 C. to immobilize the fibres and the resulting prepreg cured at above 200 C. An assembly of the cured pre-pregs may then be laminated at 100 to 5000 p.s.i. and 275 to 525 C. Reference is made to Specification 1,071,901.
Patent GB-1183719-A (GB)
Title: Colour Burst Amplifier for Colour Television Receiver.
Inventor: PRATT JOHN NORMAN
IPC: H04N9/455
Filed: 1966-05-20
Abstract: 1,183,719. Colour television. R.C.A. CORPORATION. 3 May, 1967 [20 May, 1966], No. 22478/66. Heading H4F. The Specification describes a colour burst separator / amplifier, wherein the separator pulses, derived from the horizontal sync. pulses, are used to augment the H.T. voltage of the amplifier during the colour burst, such that a larger than normal amplitude is obtained for the separated colour bursts. The chrominance signal including the colour bursts are applied to input 1, across a tuned circuit 8/12 resonant at the colour burst frequency. The signal is thus applied to a normally off valve 2 which is rendered conductive during the colour burst intervals by said separator pulses applied to the control grid. The H.T. of the valve is normally supplied from a + 270V source via resistors 30, 28 and transformer primary 24. During said intervals the 235V separator pulses are applied via capacitor 34 to the valve to produce said augmentation. The separated colour burst signals cause tuned crystal 41 to ring and so phase look colour burst frequency oscillator 43. In the arrangement of Fig. 2 (not shown), the resistor 30 is omitted, and the +270V source applied to the screen grid and the junction of winding 24 and resistor 28.
Patent GB-778846-A (GB)
Title: Travelling wave tubes
IPC: C08G81/02
Filed: 1953-08-14
Abstract: 778,846. Travelling wave tubes. STANDARD TELEPHONES & CABLES, Ltd. Aug. 14, 1953 [Aug. 19, 1952], No. 22493/53. Class 39(1). In a travelling wave tube of the helix type. the helix is provided with localised attenuation comprising a block of resistive material whose ends are spaced from the helix, but whose centre touches one or more turns of the helix the lossy body completely absorbing the input waves and its ends forming reflectionless impedance transitions. In manufacture the helix is first cleaned and freed from oxides, acids and salts and three ceramic rods 8 placed round it. The helix is then painted with a nitrocellulose solution to give an imperforate cylindrical covering and the resulting structure dipped in or painted with molten paraffin wax. The wax coating is built up by repeated applications until rods 8 are embedded in it, and is then scraped or moulded to the desired contour of the loss material. The nitrocellulose film can be removed where the loss material is to contact the helix by rubbing with a smooth glass bead dipped in acetone. The loss material, preferably colloidal graphite with a sodium silicate (or other silicate) binder is then sprayed on to the wax form. The wax is subsequently dissolved out with carbon tetrachloride and the nitrocellulose with acetone. The structure is then air fired at 375C. followed by vacuum firing at 800C. for degassing. The silicate binder also serves to secure the loss material to the helix. In another embodiment Figs. 4, 5 (not shown), a graphite block is shaped to fit into and around the ceramic rods by accurate machining. The graphite must be spectroscopically pure and is produced electrolytically. The rods and graphite block may be inside the helix, Figs. 6, 7 (not shown), the electron beam being annular and passing outside the helix. The ceramic rods 8 are carried at either end by discs and a long coil focuses the beam, Fig. 1 (not shown). The ends of the helix are of increasing pitch for impedance matching and are connected to tapered probes.
Patent GB-748398-A (GB)
Title: Improvements in and relating to the surface treatment of ferrous metals
IPC: C23C12/00
Filed: 1952-09-08
Abstract: Tungsten or molybdenum or both is or are diffused at 900 DEG -1000 DEG C. into the surface of a ferrous metal having a content of free carbon less than 0,8 per cent, the surface being subsequently nitrided in an atmosphere of ammonia at 480 DEG -560 DEG C. The first stage may be carried out by electrolytic deposition, vapour deposition, spraying or sputtering followed by diffusion treatment, or by cementation in a metal powder or in a molten salt bath in the presence of a reducing gas, in which case both stages may be carried out in the same apparatus, diffusion being carried out whilst the work-piece is totally immersed in the salt bath under an atmosphere of ammonia and the work-piece being then lifted out of the bath and transferred in a direction opposite to that of inflowing ammonia to a part of the apparatus kept at the lower temperature.  An annealing stage may be introduced between the diffusion and nitriding stages. Diffusion for 5-6 hours at 980 DEG C. may be followed by annealing for 1-10 hours at 900 DEG -1250 DEG C.; preliminary nitriding may be effected at 510 DEG C. for 4 hours followed by a main nitriding treatment at 540 DEG C. for 25 hours.  If the carbon content exceeds 0,4 per cent, the steel may contain carbide formers viz.: Ti, Nb, V, Ta, W, Mo, Cr or Mn; it may also include nitride formers viz.: Al, Cr, Ti or Zr.  Parts of the work not to be treated may be coated with Cu. Specifications 635,595 and 647,748 are referred to. p
Patent GB-745627-A (GB)
Title: Improvements relating to the manufacture of sulphuric acid by moist gas catalysis
IPC: C01B17/76
Filed: 1951-09-27
Abstract: In the manufacture of sulphuric acid by catalytic oxidation of moist gases containing sulphur dioxide and subsequent condensation, the converter is cooled by indirect heat exchange and the cooling surfaces of the converter are kept at temperatures above the point of condensation of the reacting gases by preheating the cooling medium by means of heat produced in the sulphur dioxide-forming reaction. Air used as the cooling medium may be preheated by passage through a heat exchanger in co-current flow with the gas containing sulphur dioxide, or by means of steam from a waste heat boiler supplied with heat from the sulphur dioxide-forming reaction.  Alternatively, or in addition, the steam from this waste heat boiler may itself be used as the cooling medium.  To conserve heat, the used cooling medium may be employed, e.g. as combustion air, in the sulphur-dioxide forming process, or may preheat the feed water to the waste heat boiler.  The hot sulphur dioxide-containing gases may be formed by combustion of hydrogen sulphide or by other methods.
Patent GB-1387252-A (GB)
Title: Dual colour radiometer system
IPC: G01N21/35
Filed: 1973-05-14
Abstract: 1387252 Measuring atmospheric turbulence photo-electrically NORTH AMERICAN ROCKWELL CORP 14 May 1973 [22 June 1972] 22865/73 Heading G1A In an air turbulence detecting system in which signals representing the intensity of the emission of CO 2  in the atmosphere are detected at two wavelengths the contributions in the emission spectrum due to atmospheric ice are cancelled by weighting one or both of the signals and applying the two signals to a difference amplifier. A dual radiometer system adapted for mounting in an aircraft provides two output signals representative of emissivity of a sample of air at 13À8 and 14À1 microns respectively, either a pair of infrared detectors or a single device the output of which is shared between the two wavelengths by means of a light chopper employing two filters, being used. The output signal at 14À1 microns is weighted by a factor such as the cloud ratio (2À0 at 30,000 feet) using a potentiometer or  variable gain amplifier so that when the difference of the signals is taken the contributions due to atmospheric ice cancel out. The resulting signal is representative only of the intensity of the CO 2  emission which is indicative of an atmospheric thermal discontinuity associated with turbulence. If the output is above a predetermined threshold warning devices &c. in the aircraft are activated. The signals may be processed digitally or analoguely and successive samples may be compared or averaged. Either a single line of sight or different lines of sight may be scanned.
Patent GB-598489-A (GB)
Title: Improvements in film driving mechanism for cinematograph machines
IPC: G03B19/18
Filed: 1945-09-05
Abstract: 598,489. Kinematograph projectors. BRITISH THOMSON-HOUSTON CO., Ltd., and BOWEN, A. Sept. 5, 1945, No. 22880. [Class 97 (i)] In a kinematograph projector of the kind wherein the intermittent sprocket 4 is driven by a Geneva mechanism 3, 6 driven in turn through a pinion 2 from a pinion 1 concentric with the sprocket, the pinion 2 with striker.pin 3 being rotated round the pinion 1 for " framing " the film, and wherein a differential is included in the shutter drive to enable a timing correction to be introduced simultaneously, the drive to this differential is taken from a pinion 11 on the same shaft as the pinion 2 through a pinion 12 concentric with the sprocket. The drive is taken thence through pinions 18, 16, 20, 19, 17, 15<1>, 15<11> to. the shutter 10. The pinions 16 and 17 are concentric and, together with the two integral planetary pinions 19, 20 constitute the differential. The pinions 19, 20 are rotated round the pinions 17, 16 simultaneously with the rotation of the pinion 2 round the pinion 1. Data are given of the gear sizes required to secure correct shutter timing. Chain drives to the continuously running sprockets 7, 8, 9 are provided from the shaft 15.
Patent GB-1537308-A (GB)
Title: Energy absorbing bumper assemblies
IPC: B60R19/18
Filed: 1977-06-03
Abstract: 1537308 Riveting BRITISH LEYLAND UK Ltd 3 June 1977 22913/76 Heading B3U [Also in Division F2] In a bumper assembly a urethane or other elastomeric moulding 12 has projections 19 which are inserted through corresponding holes in an aluminium support beam 11 and then expanded by the insertion of serrated plastics pins 21 to secure the moulding with the support beam.
Patent GB-424424-A (GB)
Title: Process for the production of highly nitrogenous mashes
IPC: C12N1/18
Filed: 1933-08-16
Abstract: In the production of highly nitrogenous mashes from vegetable materials rich in protein, the native proteins in the raw materials are opened up, before boiling the mash, with pancreatic ferments such as pancreatin or its proteolytic components, after which the treatment of the mash is carried out in the usual way. Raw materials specified are cereals, pulses of all kinds and the flours derived therefrom, bran, malt, malt-germs, compressed cakes from seeds containing oil and protein, especially those obtained from the earth nut and soya bean.  The action of the enzymes for example, by heating the mash for a prolonged period to a suitable temperature, is preferably interrupted, at the stage when the protein degradation products formed are those most suitable as nutrients for the fermentation organism to be employed.  A small addition of vegetable or animal charcoal, and especially of active charcoal, acts as an accelerating agent for the proteolysis, and is also of advantage for the subsequent fermentation.  The amylase contained in the pancreation serves to saccharify the starch containing components of the mash.  The process can be employed in the production of mashes for use in making pressed yeast.  Both in the proteolysis and in the subsequent fermentation, the hydrogen ion concentration may be suitably adjusted.  An example is given.  The Specification as open to inspection under Sect. 91 comprises also the proteolysis of plasmolyzed yeast and of animal products rich in protein such as milk, whey, casein, blood, fish and meat meals, &c., as raw materials for the production of mashes.  This subject-matter does not appear in the Specification as accepted.  Reference has been directed by the Comptroller to Specifications 22399/91, [Class 14], 16925/11, 195,347, [both in Class 14 (ii)], 385,729 and 386,912; and 197,935, [Class 14 (ii)], 385,729, and 386,912 as open to inspection under Sect. 91 of the Acts.
Patent GB-911876-A (GB)
Title: Improvements in cycle brakes
IPC: B62L1/16
Filed: 1961-06-26
Abstract: 911,876. Cycle brakes. ANGLO-CONTINENTAL CYCLES & ACCESSORIES Ltd. June 26, 1961 [Dec. 13, 1960], No. 23004/61. Class 136(1). A cycle brake is formed from two levers 1 and 2 which have wheel-rim-clamping brake-blocks 3 and 4 at their bottom ends and each of which has a longitudinal slot 15 or 16 at one end of which is fitted a pivot 19 or 20 connected to a brake support 10, the gap between the pivot and the other end of the slot being occupied by a wedge 17 or 18. This construction enables the same shape of lever to be used at the front and rear of the cycle, despite dimensional variations between the front and rear wheel-forks, depending on whether the wedge is placed above the pivot as in Fig. 1 or below, as in the part-sectional side view of the brakeblock and pivot shown in Fig. 6. The levers are secured to the pivots by screws 23, 24 with washers 25, 26. The supports 10 are fixed to the transverse part of the front fork as in Fig. 1, or to the rear fork, as in Fig. 5 (not shown). Cables 11, 13 deflect the levers against the bias of return springs as at 5 of Fig. 6.