baber/WOPTO huggingface dataset:
Patent GB-1396200-A (GB)
Title: Torque transmitting couplings
IPC: F16D3/79
Filed: 1972-08-11
Abstract: 1396200 Flexible shaft couplings PRECISION KINEMATICS (GEARS & MECHANISMS) Ltd 13 Aug 1973 [11 Aug 1972] 37610/72 Heading F2U A flexible shaft coupling comprises input and output flanges 11, 13 connected alternately by clamps to a flexible diaphragm 14, each clamp (e.g. a bolt 12 and nut) having on each side of the diaphragm a cushion 117 of softer material. The cushions 117 may be planar and without flanges, and be compressed by an amount 8 determined by rigid components 15, 16 of the clamp. The diaphragm 14 may be of stainless steel laminates and the cushions 117 of nylon, resin impregnated fibre, bronze or an aluminium alloy.
Patent GB-1430165-A (GB)
Title: Flash spinning process
IPC: D01F6/04
Filed: 1973-08-08
Abstract: 1430165 Polypropylene plexifilaments EIDU PONT DE NEMOURS & CO 8 Aug 1973 [14 Aug 1972] 37637/73 Heading B5B Plexifilaments are obtained by flash-spinning a solution of a propylene polymer in trichlorofluoromethane. The solution contains from 2 to 20% by weight of the polymer, which comprises at least 85% by weight of propylene units, at least 80% by weight of the polymer being isotactic polypropylene. The temperature and pressure of the solution are adjusted to 200‹ to 240‹ C. and greater than 900 p.s.i.g. respectively and the plexifilament produced by extruding this abruptly into a region of lower temperature and pressure. The melt flow rate (MFR) of the polymer is from 2 to 30 and is such that MFR/C#1À13-0À04 (T-220) where C is the concentration of the polymer in weight per cent and T the temperature in ‹C. It is preferred that the pressure is so adjusted that the solvent/polymer mixture is a single phase which, just before extrusion, is converted to a transient two-phase mixture. This may be accomplished by use of the spinneret illustrated in Fig. 3 where a single-phase solution passes through a let-down orifice 12 into a let-down chamber 13, where the pressure falls, before extrusion through the spinneret orifice 14. Orifice 14 terminates in an exit shroud 16 which has the function of spreading the expanding extrudate as widely as possible. To this end the shroud is a rectangle cut in a flat face. Alternatively a shroud as illustrated in Fig. 5 (not shown) which has a convex exit face.
Patent GB-831987-A (GB)
Title: Process for improving the properties of unsaturated polyester resins
IPC: C08G63/58
Filed: 1956-12-10
Abstract: Unsaturated polyester resins having little or no acid action are prepared by reacting unsaturated polyesters, excluding alkyd resins obtained from glycidyl esters of ethylenicallyunsaturated monocarboxylic acids and dicarboxylic acid anhydrides, with a monofunctional epoxide.  Specified epoxides are ethylene, propylene, butylene and styrene oxides.  Reaction temperatures are preferably 150 DEG  to 250 DEG  C.  In the example, ethylene oxide is introduced at 180 DEG  to 200 DEG  C. into a melted resin prepared from stoichiometric amounts of maleic and phthalic anhydrides and ethylene glycol and having an acid number of 46, and after 5 hours the acid number drops to 4.
Patent GB-523125-A (GB)
Title: Improvements in welded steel pipe structures for aeroplanes
IPC: B64C1/06
Filed: 1938-12-29
Abstract: 523,125. Making aircraft structures- POLLAK, J. E. (See Fabriks Aktiebolag). Dec- 29, 1938, No. 37785. [Classes 83 (ii) and 83 (iv)] Uniting by fusion.-In making aeroplane fuselage and wing framework structures of hardened steel pipes welded together the frame pipes 1 are provided with locally thickened portions 3, which are welded to the thickened ends 4 of the cross braces 2 so as to adjust loss of tensile strength due to welding. If the frame pipes consist of a number of units welded together the thickened ends are first welded together as at 7, Fig. 2, and the cross braces 8, 9 are then welded thereto. The frame tubes may be hardened before or after welding at 7. Frame tubes of different sizes may be welded together at 10 and the thickened end of the cross brace 11 shaped so as to fit these parts.
Patent GB-1241291-A (GB)
Title: Steels resistant to stress corrosion cracking
Inventor: KIRKBY HENRY WILLIAM
IPC: C22C38/58
Filed: 1967-08-16
Abstract: 1,241,291. Alloy steels. FIRTH BROWN Ltd, H. W. KIRKBY and J. E. TRUMAN. Aug.16, 1968 [Aug.16, 1967], No. 37795/67. Heading C7A. Alloy steels resistant to stress corrosion cracking have a structure containing not less than 50% ferrite and consist, in percent by weight, of:- C 0À02-0À06 Si 0À25-0À7 Mn 0À3-1 Ni 2-3 Cr 15-17 Mo 0À8-1À2 Nb 0À4-0À7 N 0À02-0À04 Fe and impurities -balance. They may be welded without giving rise to the necessity of post-welding heat-treatments.
Patent GB-1363136-A (GB)
Title: Liquid container
IPC: G03D3/06
Filed: 1971-08-12
Abstract: 1363136 Containers; packages EASTMAN KODAK CO 12 Aug 1971 [14 Aug 1970] 37910/71 Headings B8D and B8C A container comprises one or more collapsible bags 21 and 23 of rubber, vinyl resin or L.D. polyethylene containing photographic rinse and developer solutions sealed within a box 13 and 15 of aluminium, steel or H.D. polyethylene, and self-sealing puncturable members 25, 29 and 31 facilitating extraction of the solutions by puncturing the members 25 and 29 and return of the solutions into the box/bags interspace by puncturing the member 31. As shown, the sealing members are rubber patches adhered to the bags and/or the box wall. The sealing members and bags are puncturable by hyperdermic needles 39, 41 and 45 of extraction conduits 35 and 37 and return conduit 43 connected through pumps to processing trays 59 and 61. In modifications, Figs. 5 and 6 (not shown), the patches are replaced by capped or plugged nipples 53, 54 or 53<SP>1</SP>, the caps or plugs 55, 56 or 55<SP>1</SP> being of self-sealing rubber or being lined therewith. Inward box protrusions 49 limit the insertion of the needle 45 to prevent bag penetration thereby and constitute a handhold.
Patent GB-975475-A (GB)
Title: Improvements in and relating to the moulding of articles from granulated materials
Inventor: JEFFERSON KENNETH REAY
IPC: B22C15/28
Filed: 1962-10-08
Abstract: 975,475. Moulding granular plastic material. BAKER PERKINS Ltd. Nov. 1, 1963 [Oct. 8, 1962], No. 37939/62. Heading B5A. [Also in Division B3] In a moulding process, particularly for CO 2  hardened moulds and cores, the moulding material is blown into contact with die means and simultaneously compressed by a perforated flexible diaphragm a surface of which contacts the moulding material and pressurized fluid acting on the opposite surface of said diaphragm and through its perforations. A sand carrier 4 is reciprocable on rails 17 by cylinders 14, 15 between a position above the die 20. In the latter position the sand carrier may be clamped between a pressure chamber 6 and the die by a cylinder 7 and pressure air admitted from the chamber 6 through a valve 12 to the rear of the perforated diaphragm 13 to blow the sand from the carrier 4 into the die and simultaneously compress it. The two-part die 20 comprises a part 20b movable by toggle means 22 and cylinder 21, and is heated by electric heater plates 24. The rails 17 above the die are spring- mounted for effective sealing of the carrier to the die.
Patent GB-328588-A (GB)
Title: Improvements in or relating to processes for the preparation of cellulose esters
IPC: C08B3/08
Filed: 1928-12-22
Abstract: 328,588. Ellis, G. B., (Soc. des Usines Chimiques Rhone-Poulenc). Dec. 22, 1928. Cellulose carboxylates.-Crotonic esters of cellulose are prepared by treating cellulosic materials with crotonic anhydride in presence of esterification catalysts and, if desired, of diluents. The cellulosic materials are preferably subjected to a preliminary treatment, for example with melted crotonic acid or with the vapours of crotonic acid. The cellulosic materials, which may be employed, comprise, for example, cotton or wood pulp, which may have been subjected to a purifying treatment, or oxycellulose, hydrocellulose or hydracellulose. As catalysts, there may be used, for example, sulphuric or other strong mineral acids, aliphatic or aromatic sulphonic acids, bisulphates, zinc chloride, or perchlorates. Suitable diluents comprise, for example, benzene, toluene, or melted crotonic acid. The crotonic esters of cellulose are soluble in a large number of organic solvents to give solutions from which transparent films can be prepared by evaporation. They may be used also in the manufacture of artificial threads, plastic masses, and varnishes and may be converted into other cellulose derivatives by the fixation of various radicles or elements in the double bond of the crotonyl group. In examples, cotton is pretreated with hot crotonic acid, crotonic anhydride' is added after allowing the mixture to cool, and finally a mixture of crotonic anhydride and methane sulphonic acid is added, esterification being continued until the cellulose is entirely dissolved whereupon the crotonic ester is precipitated by means of alcohol, water or other suitable agent and the precipitate washed and dried; cotton pretreated with crotonic acid is esterified in a mixture of crotonic anhydride, benzene, and methane sulphonic acid or in a mixture of crotonic anhydride and magnesium perchlorate or in a mixture of crotonic anhydride, benzene, and benzene sulphonic acid; cotton pretreated with crotonic acid is stirred with crotonic anhydride and subsequently zinc chloride is added, whereupon the mass is stirred first at ordinary temperature and then at about 75‹ C. until a homogeneous solution is obtained; cotton is treated with a mixture of crotonic acid, benzene, and methane sulphonic acid and the whole is then placed in an esterifying bath containing crotonic anhydride and methane sulphonic acid: cotton cellulose is stirred with crotonic acid and the with an esterifying bath comprising crotonic anhydride, benzene, and sulphuric acid; cotton is immersed in an esterifying bath comprising crotonic acid, crotonic anhydride, benzene, and methane sulphonic acid and the esterification completed in a mixture of crotonic anhydride and methane sulphonic acid a stream of dry air is bubbled through melted crotonic acid and is then passed through cotton at 100‹ C., the pretreated cotton being finally esterified in a mixture of crotonic anhydride, benzene, and methane sulphonic acid.
Patent GB-874684-A (GB)
Title: Improvements in or relating to data sensing apparatus
Inventor: WILKINS COLIN BERNARD
IPC: G06V30/224
Filed: 1958-11-26
Abstract: 874,684. Recognizing characters etc.; statistics, apparatus for compiling &c. INTERNATIONAL COMPUTERS & TABULATERS Ltd. Sept. 24, 1959 [Nov. 26, 1958], No. 38091/58. Class 106 (1). A device for scanning a document having significant data representing areas defined by marks upon it, comprises at least two sensing devices providing a line of adjacent scanning areas substantially perpendicular to the direction of scanning of the document and each producing a signal dependent upon the degree to which its scanning area is occupied by a mark, and a signal combining circuit which produces an output of an amplitude determined by the amplitude of the sensing device having the largest output. A code, comprising marks 3, Fig. 1 (described in Specification 793,103), is sensed by passage under a line of photo-cells 11 extending laterally to a greater width than that of the code marks. The intensity of signals from the cells 11 represent the marked/ unmarked ratio of the area sensed by each cell, and since the arrangement is such that the largest of these signals for any one mark is chosen, a reasonable sideways misalignment of the marks 3 is tolerable. The marks 3, Fig. 2, are projected through lenses 13, 14 on to the line of photo-cells 11, whose outputs are separately amplified and passed to an OR gate 20 which passes the signal of greatest amplitude to a clipper 21 set to eliminate random noise signals. Thus a pulse is developed each time a mark is sensed. Recognising characters. If the code consists of gaps 9, 10, Fig. 1, rather than marks, the criterion for detecting a gap is that all the cells 11 provide simultaneously the same output voltage. In this case the OR gate 20 is replaced by an AND gate 23, Fig. 3, the phasing of the amplifiers is reversed and the clipper 21 is set to eliminate spurious low voltage signals. Thus a positive pulse is developed each time a gap is sensed. Specification 793,102 also is referred to.
Patent GB-1446855-A (GB)
Title: Metal reinforcing elements
IPC: B21F1/04
Filed: 1972-08-16
Abstract: 1446855 Making reinforcement wires, rolling G K N SOMERSET WIRE Ltd 18 Oct 1973 [16 Aug 1972] 38165/72 Headings B3A and B3M [Also in Division E1] Wire reinforcing elements 10 for use in a cementitious matrix comprise short lengths of mild or high carbon steel wire of substantially circular cross-section having a crimped centre portion 12 with either flattened spade ends 11 or thickened headed ends (Figs. 3, 4 not shown). The wire diameter is not more than 0.04 inch and preferably is not less than 0.02 inch, the crimping lies in a single plane, and the pitch and amplitude of the crimping are of the order of “ inch and 3/32 inch respectively. The elements may be manufactured by passing wire 36 continuously between a pair of crimping wheels 34, 35, the wire being crimped by complementary portions 37, 41 of the wheels, flattened by portions 39, 42 and cut by a projection 38 engaging a recess 40. Alternative methods of manufacture comprise crimping cut lengths of wire in a press and thickening the ends with heading punches (Fig. 5 not shown) or crimping the wires between rollers followed by thickening the ends with heading punches while the cut lengths are held in a press (Fig. 6 not shown).
Patent GB-976697-A (GB)
Title: Remote indication system
IPC: H04Q9/14
Filed: 1963-09-27
Abstract: 976, 697. Electric selective signalling systems. TELEFONAKTIEBOLOGET L.M.ERICSSON. Sept. 27, 1963 [Sept. 27, 1962], No., 38276/63. Drawings to Specification. Heading G4H. Cyclic scanning in a field station system, for example in a railway signalling system, is achieved by having each field station call the next. This avoids transit time delay which would normally occur when very remote field stations are called direct from the central station.
Patent GB-1177743-A (GB)
Title: Cold Separation of the Blow-Off Gas from an Ammonia Synthesis Plant
IPC: F25J3/06
Filed: 1968-08-12
Abstract: 1,177,743. Cold separation of gas mixtures. MESSER GRIESHEIM G.m.b.H. 12 Aug., 1968 [29 Aug., 1967], No. 38365/68. Heading F4P. Recovery of ammonia, hydrogen and one or more intermediate boiling components, e.g. methane, argon and nitrogen from high pressure blow-off gas of an ammonia synthesis plant is effected by passing the blow-off gas at ambient temperature from a line 1 through parallel heat exchangers 2a-2e and an exchanger 4 so as to condense most of the ammonia, separating the liquid ammonia at 5, passing the residual gas reversely through exchanger 2c, absorbing the residual ammonia at 8, 9, work-expanding the ammonia-free gas mixture at 11, passing the socooled mixture through 13, 16, 19, separating methane-rich liquid at 17 and nitrogen-rich liquid at 20 and returning hydrogen-rich gas from separator 20 through exchangers 19, 16, 13, 4, 2d and discharging as product through a line 22. Methane-rich liquid withdrawn from separator 14 may be expanded at a valve 24, and returned through exchangers 13, 2a and discharged as product through a line 26 or at least a portion of the withdrawn liquid may be passed through a line 23a to a rectifier (not shown) from which liquid methane is passed through a line 23b to a point downstream of expansion valve 24. Argon-rich liquid and nitrogen-rich liquid withdrawn from separators 18, 21 are similarly treated and are withdrawn through lines 30, 34.
Patent GB-369295-A (GB)
Title: Improvements in and connected with sewage distributors
IPC: C02F3/04
Filed: 1930-12-24
Abstract: 369,295. Sewage distributers. STONE & CO., Ltd., J., Deptford, London, and EVANS, S. C., 2, Pumping Station, Sandy Lane, Belle Vue, Doncaster. Dec. 24, 1930, No. 38869. [Class 69 (iii).] A self-dosing rotary sewage distributer of the Barker's mill type is provided with automatic means incorporated in the sprinkler for starting and stopping the siphon connected with the dosing tank. 'Fig. 1 shows a form of apparatus comprising a tank b, to which distributer arms c are attached, mounted to rotate around a standard a. The siphon comprises pipes h, forming the long leg of the siphon, extending into the tank b so that they are always covered with liquid, the short leg being formed by the conduit extending into the dosing chamber. The standard is closed by a diaphragm a<1> and has communicating with it an air pipe j, j<1>, the leg j of which is shorter than the leg j<1>, and a second pipe k, the lower end of which is provided with an inverted U-trap k<2>. Liquid from the dosing chamber rises freely in the standard until the end of the pipe is covered, after which air will be compressed until the pressure is sufficient to blow the seal k<1>. Water will now rush up the tube and start the siphon, which will continue in action until the dosing chamber is exhausted. The arms c are provided with hoods l which in conjunction with the bulbous shaped nozzles m, Fig. 4, act as siphons, so that the arms run full until siphonic action is broken. Liquid impinges on reaction and diffusing plates m<1>. The tube j<1> may be adjustable so that the apparatus starts at different heads. By having two such distributers having pipes j<1> at different levels they may be arranged to work in succession from a common dosing chamber. Fig. 6 shows a form of apparatus in which a dosing chamber n to which liquid is continuously fed through the standard a and spouts a<3> is mounted on the sprinkler. The tank b is mounted beneath the dosing chamber and supports a siphon formed by an annular bell o and inner tube p. An air pipe j, j<1> and trapped pipe k<2> operate in the same manner as the corresponding pipes in Fig. 1. An air escape pipe q is provided communicating with the tank b and rising to a level higher than the maximum liquid level in the dosing tank.
Patent GB-1524864-A (GB)
Title: Monolithic semiconductor arrangements
IPC: H01L27/06
Filed: 1975-09-23
Abstract: 1524864 IGFET protection device INTERNATIONAL BUSINESS MACHINES CORP 23 Sept 1975 [22 Oct 1974] 38900/75 Heading H1K A voltage-overload protection device for the gate insulation of an IGFET 12 comprises a diode 92, having its junction breakdown voltage controlled by a field relief electrode, and a diode 94 which protects the insulation below the field relief electrode by providing a high impedance which prevents electrostatic discharge currents from flowing through the insulation. The device is formed in a P (or N)-type semiconductor substrate having two diffused N (or P)-type regions forming diode junctions with the substrate, and a field electrode connected to one diffused region and also positioned above a thin portion of an insulating layer across part of the junction between the substrate and the other diffused region. Connection to the IGFET gate is made by a further electrode connected to the other diffused region. A further P (or N)- type region may be provided below the field relief electrode to reduce the breakdown voltage of the diode controlled by the field relief electrode.
Patent GB-999623-A (GB)
Title: Sensing head of optical temperature measuring apparatus
IPC: G01J5/60
Filed: 1961-10-31
Abstract: 999,623. Photoelectric temperature measurement. LATRONICS CORPORATION. Oct. 31, 1961, [July 3, 1961], No. 38957/61. Heading G1A. The invention relates to improvements in the two colour pyrometer sensing head described in Specification 911, 645. In the improved head, the light beam from the source whose temperature is to be measured is directed by focusing means 8 on to a prismatic beam splitter 10, via a variable apperture iris 9. The splitter passes part of the beam to viewing opening 11, whereby the head may be visually directed, and part to a light tube 13 having a tapered exit end 13a. The beam passes from the light tube to a rotating shutter 14 having two filter portions 14a and 14b of respective red and blue colours and different angular extent. The beam after passing through the two filters in turn falls on the cathode 21 of a photomultiplier tube forming part of a circuit described in the above Specification. To ensure that the photomultiplier tube does not suffer from fatigue after being in the dark, a neon tube 27 is provided and energized such that it lights up and illumintes the cathode 21 when the light from tube 13 is absent. A test lamp 26 may be provided for calibration. A dark lens 18 may be moved into the path of the beam when the intensity of the beam is too great. A series of yellow filters, Fig. 4 (not shown) may be placed in the path of the beam to change the wavelengths of the two analysed spectrum portions and the temperature range of the pyrometer. Reference has been made by the Comptroller to Specification 911,645.
Patent GB-998361-A (GB)
Title: Sealing composition and lining material
IPC: C09D163/00
Filed: 1962-10-16
Abstract: A sealing, lining or coating composition comprises an unsaturated liquid polyester or epoxy resin, a curing system therefor and coal or coke having a fineness of between 10 and 350 United States Standard Sieve mesh, said coal or coke being present in an amount of up to six parts by weight per part of resin. Specified epoxy resins are the reaction products of epichlorohydrin with 1 : 5-dihydroxy naphthalene, 2 : 2 : 5 : 5-tetrakis - (4 - hydroxyphenyl) hexane, 2 : 2 - bis - (p-hydroxyphenyl) propane and phenol-formaldehyde condensates and epoxidized polyolefines; specified curing agents therefor being salts of methylamine, dimethylamine, trimethylamine, hexamethylene diamine, morpholine and diethylene triamine with saturated or unsaturated carboxylic acids containing up to eighteen carbon atoms; piperidine, pyridine, ethylene diamine, diethylene triamine, triethylene tetramine, urea, adipamide, thiourea, p-toluene sulphonamide, succinic, maleic and phthalic anhydride and boron trifluoride derivatives. The polyester specified is derived from maleic acid, phthalic and ethylene glycol; specified accelerator and catalyst combinations being cobalt naphthenate and methyl ethyl ketone peroxide; manganes naphthenate and cumene hydroperoxide; diethylaniline and benzoyl peroxide and mercapto ethanol and methyl ethyl ketone peroxide.  A cross-linking agent, e.g. styrene, may be present in the polyester composition.  The examples disclose compositions comprising: (I) a polyester derived from ethylene glycol, maleic acid and phthalic acid, cobalt naphthalene, methyl ethyl ketone peroxide and coke; (II) a liquid epoxy resin derived from bis-phenol-A and epichlorhydrin, a reactive diluent, triethylene tetramine and coke; (III) a liquid epoxy resin as in (II), coke, aminoethylpiperazine and a polymer mixture of polynuclear aromatic hydrocarbons, and (IV) a liquid epoxy resin as in (II), coal or coke, triethylene tetramine and a polymer mixture as in (III). Specification 738,227 is referred to.ALSO:A protective coating or lining for pipes or other structural units comprises a cured unsaturated polyester or epoxy resin having dispersed therethrough a solid filler material comprising coal or coke and having a fineness of between 10 and 350 United States Standard Sieve Mesh, said solid material being present in an amount of up to six parts by weight per part of resin, said coating or lining having improved strength retention as compared with unfilled cured resin upon prolonged exposure to 5% sulphuric acid.  Specification 738,227 is referred to.