baber/WOPTO huggingface dataset:
Patent GB-1445540-A (GB)
Title: Method of and apparatus for connecting leads to semiconductor chips
IPC: H01L21/60
Filed: 1974-10-24
Abstract: 1445540 Magnetic holding devices; manufacturing semiconductor devices GENERAL MOTORS CORP 24 Oct 1974 [9 Nov 1973] 46026/74 Headings H1P and H1K In apparatus (Figs. 1 to 3) for automatically aligning a semiconductor chip with integral leads thereon and a conductive lead frame structure, and transferring the lead to the structure for permanent bonding thereto, the silicon chip 10 incorporating an integrated circuit has spaced magnetisible contact bumps 12 thereon formed of composite layers of Al, Cr, Ni, or Fe; Sn and Au. The rear of the chip is located on the flat tip of a vertical recessed ferromagnetic probe 16 of transfer apparatus 18 which is mounted in a ferromagnetic tapered probe holder 20 seated in annular stainless steel base 32. An axial bore of holder 20 and base 32 slidably receives a stainless steel guide 26<SP>1</SP> extending from base 26 with a flange 28 secured to aluminium mount 30. Base 32 has opposed trunnions 42 resting on arms 36, 38 of pivoted aluminium lever 40, whereby probe 16 can be raised vertically while remaining in horizontal alignment. An electromagnetic coil 44 surrounding the holder 20 is D.C. or A.C. energisable over switch 45. A conductive ferromagnetic lead frame 46 of, e.g. Ni, Mn, Si, Fe alloy coated with Au overlies chip 10 and has plural sets 48 of spaced inwardly converging cantilever fingers 50 arranged in two parallel rows; the inner ends 50<SP>1</SP> being arranged in a pattern corresponding to the contact bumps 12 of the chip. Juxtaposed stainless steel or Al cover plates 52, 54 enclosing the lead frame are apertured to expose the sets 48 of lead frame fingers and are clamped in register at 56 to arms 58 of a supporting automatic indexing mechanism which supports the lead from parallel to the mounting plate 60 to successively position the sets of fingers 48 over the probe tip 16, while a torch 62 directs hot inert or reducing gas successively against the upper surface of each finger set as it moves over probe 16. In operation, a set 48 of fingers is positioned over probe 16 and chip 10 is placed thereon, after which coil 44 is energised and arm 40 is depressed to raise the probe so that the chip is brought into proximity with the fiinger set; whereby the magnetic force raises the chip further so that its contact bumps 12 are magnetically attracted (Figs. 4, 5 not shown) to engage and register with their appropriate fingers; after which the fingers and contact bumps are permanently heat bonded for mechanical and electrical connection by the gas from torch 62, which may be a N 2 -H 2  mixture. The magnetisable probes may be interchangeable and may be circular or square in section and divided by orthogonal slots into spaced segments to concentrate the magnetic flux in the areas of the contact bumps (Fig. 6 not shown).
Patent GB-1283399-A (GB)
Title: Improvements in or modification of a method of producing calcium-containing alginic material
Inventor: MILLER JOHN HUNTER MCBAIN
Filed: 1969-09-18
Abstract: 1283399 Solubilized alginate WALLACE CAMERON & CO Ltd 17 Sept 1970 [18 Sept 1969] 46034/69 Addition to 1231506 Heading C3U Solubilized calcium-containing alginic material is produced by acidifying calcium alginate with a calculated quantity of acid sufficient to remove a desired amount of calcium, reacting the acidified calcium alginate with an excess of at least one base selected from ammonia, amines and substituted amines, and removing excess base by washing. The calcium alginate may be in the form of gauze, powder or filament, and may be acidified with HCl. The base may be ethylene diamine, an amino-phenol, monoethanolamine, triethanolamine, lignocain, novocain or morphine. The reaction is preferably effected in a solvent, which may be a mixture of water and isopropanol or industrial methylated spirit. The volume ratio of alcohol to water may be 1 : 4 to 4 : 1.
Patent GB-1151761-A (GB)
Title: Preparation of Oxymethylene Polymers
Inventor: MAY HERBERT
IPC: C08G2/00
Filed: 1965-09-30
Abstract: 1,151,761. Trioxan copolymerization. BRITISH INDUSTRIAL PLASTICS Ltd. 20 Sept., 1966 [30 Sept., 1965; 1 Nov., 1965], Nos. 41554/65 and 46158/65. Heading C3P. Copolymers comprising (1) a major proportion of oxymethylene derived from trioxan units and (2) units derived from compounds of formula wherein -A ... B- represents (1) the grouping -CR 1  = CR 2 - where R 1  and R 2  are hydrogen, alkyl, aryl, aralkyl or aldehyde groups, or (2) the grouping -CHR 3 -CHR 4 - where R 3  and R 4  are hydrogen, alkyl, halo- or hydroxyalkyl, aralkyl, aryl or aldehyde groups, or together form part of a further carbocyclic or heterocyclic ring, which may be substituted, or (3) the grouping -CHR 5 -CR 6 -where R 5  is hydrogen, alkyl, halo- or hydroxy-alkyl, aryl, aralkyl or aldehyde group and R 6  is an alkylene group, are obtained by copolymerization in the presence of arsenic or antimony pentafluoride or an ionic or condensation complex thereof. Further units (3) which may be included in the copolymers may be derived from styrene and its derivatives, cyclic ethers, e.g. dioxolan, allyl compounds, e.g. allyl ethers and esters, vinyl compounds, e.g. vinyl esters, cyclic esters, e.g. lactones, and aldehydes. Terpolymers may also be obtained using two monomers of type (2). Trityl hexafluoroantimonate is preferred. Compounds of type (2) specified are bicyclo-[2,2,1]- hepta - 2,5 - diene, bicyclo - [2,2,1] - hepta - 2 - ene, and the 5-methyl, 5-phenyl, 5-methyl-5- phenyl, 5-methylene, bis-(5-methyl), 5-bromoethyl, 5-aldehyde, 5-hydroxymethyl derivatives of the latter, and 1,2,3,4,4a,5,8,8a-octahydro - 1,4: 5,8 - dimethanonaphth - 2 - ylacetate. Examples 1-32 relate to the use of a variety of catalysts, Examples 33-45 to various comonomers, and Examples 46-52 to terpolymers.
Patent GB-1070502-A (GB)
Title: Improvements in and relating to heat pump plants
Inventor: GREEN ERIC STEWART
IPC: F25B40/00
Filed: 1962-12-10
Abstract: 1,070,502. Refrigerating; heat pumps. J. & E. HALL Ltd. March 9, 1964 [Dec. 10, 1962], No. 46468/62. Heading F4H. Gaseous refrigerant from the input side of the condenser of a compression-type refrigerating system is introduced into the low pressure side of a heat pump system and refrigerant is returned from the heat pump condenser to the input of the condenser of the refrigerating system. As shown, the refrigeration system 1 comprises compressors 4a, 4b a condenser 5, receiver 6, coolers 3a, 3b, booster pumps 2a, 2b and an evaporator (not shown) while the heat pump system 7 comprises a compressor 9, an evaporator 8 and a condenser 10. A line 13 is provided to pass refrigerant from the input side of condenser 5 to the evaporator 8 under the control of a valve 18, a line 14 returns refrigerant from condenser 10 to condenser 5 under the control of a float valve 15, a line 23 passes refrigerant from the outlet of compressor 9 to the input side of condenser 5 under the control of a valve 24 and a line 17 admits refrigerant from receiver 6 to the evaporator 8 under the control of a float valve 16. A by-pass line 20 including a valve 21 is provided around the condenser 10. Valves 18 and 24 are controlled by an element 19 responsive to the outlet temperature of water heated by passage through a coil 12 in condenser 10 so that the heat output of the latter may be increased by opening valve 18 or reduced by opening valve 24. Valve 21, together with an unloading device 25 for the compressor cylinders, is controlled by an element 22 responsive to the outlet temperature of water cooled by passage through a coil 11 in evaporator 8 so that the required cooling temperature may be maintained during variations in the heat output of condenser 10. The heat pump may be used only for heating purposes in which case the evaporator, line 23, valve 24 and tube 11 may be omitted.
Patent GB-1485791-A (GB)
Title: Treatment of transition metal compound
IPC: C08F4/00
Filed: 1974-10-30
Abstract: 1485791 Ziegler catalyst components IMPERIAL CHEMICAL INDUSTRIES Ltd 30 Oct 1975 [30 Oct 1974] 46966/74 Heading B1E [Also in Divisions C2 and C3] A titanium component for an olefin polymerization catalyst comprises the product of grinding a titanium trihalide with 5 to 75% molar of an organic Lewis base containing at least one phosphorus atom and 1 to 50% molar of a titanium tetrahalide, the amount of the Lewis base being sufficient to provide at least one functional (donor) group for each molecule of the tetrahalide. The phosphorus compound is suitably an amide of a phosphorus acid and may be a cyclic compound. The phosphorus compound and the tetra halide may be present as a complex thereof. Grinding may be effected in a ball mill or a vibratory mill. The initial titanium trihalide is suitably the titanium trichloride/aluminium chloride product obtainable by aluminium reduction of titanium tetrachloride. Typical Examples refer to grinding TiCl 3 .1/3AlCl 3  with T:Cl 4  and hexamethyl phosphoric triamide, 2-dimethylamino-1, 3-dimethyl-1, 3, 2-diazaphospholidise-2-oxide, and N, N, N', N', N"- pentamethyl-N"-#-dimethyl aminoethyl phosphonic triamide. The ground products may be washed or treated with organoaluminium compounds prior to use in olefin polymerization.
Patent GB-1124385-A (GB)
Title: Motor sound unit
IPC: A63H17/34
Filed: 1966-10-24
Abstract: 1,124,385. Motor sound unit. LOUIS MARX & CO. Ltd. 24 Oct., 1966 [30 March, 1966], No. 47604/66. Heading A6S. A motor sound unit for a toy comprises a frame and sounding board, a resilient striker carried in the frame, the striker having at least two fingers, the end portions of which are positioned near the sounding board, a shaft mounted rotatably in the frame and having positioned on it at least two multiple toothed cams, one cam being associated with each finger so that rotation of the cam bends the finger away from the board until the tooth and finger disengage enabling the latter to strike the sounding board. The unit is shown in Figure 3, and mounted above the rear axle of a vehicle in Figure 4. Referring to these diagrams, the propulsion unit 18, an electric motor for instance, drives the vehicle through a typical step-down gear train to which gear 46 is meshed. Hence motion of the vehicle causes counter-clockwise motion of 46 which is mounted on shaft 45. Also mounted on this shaft are two multilobed cams 47 and 48, each aligned to be engaged with the outer ends of the fingers 43 and 44 of the resilient striker 41. The other end of 41 is clamped to the frame unit. Motion of the vehicle will thus cause the fingers to be alternately engaged by the cam and released to impinge on the sounding board 38. Each cam may preferably have three teeth, as shown. The teeth are unequally spaced providing an unequal sound in operation, and teeth 47a and 48a are the only teeth in alignment between the two cams.
Patent GB-1113462-A (GB)
Title: An improved powdered free flowing fat composition and a process for preparing the same
Inventor: SASLAW IRVING MORTON
IPC: A23L9/20
Filed: 1965-11-10
Abstract: A fat phase, including an emulsifying agent, and a non-fat phase of proteinaceous and/or carbohydrate material is dispersed in an aqueous medium, and the so-formed emulsion is dried and tempered at a temperature and for a period of time sufficient to crystallise the fat phase.  The fat phase has a solids content index of not less than 19.6 at temperatures below 86 DEG F., not more than 12 at temperatures above 104 DEG F., and at least 3 at temperatures from 86 DEG  to 110 DEG F., and has a crystalline structure both above and below 98.5 DEG F.  The product may be used in cake &c. mixes, and particularly in topping mixes.  The emulsifier may be a partial glycol or glycerol ester of a higher fatty acid.  Examples employ hydrogenated cottonseed, palm kernel, and coconut oil. Other ingredients include hydroxylated soy lecithin, sucrose, whey solids, and sodium caseinate.
Patent GB-1162363-A (GB)
Title: Improvements in Windscreen Wipers
Inventor: CHARLTON ARTHUR THOMAS
IPC: B60S1/40
Filed: 1965-11-10
Abstract: 1,162,363. Windscreen wipers. MAGNATEX Ltd. 22 Nov., 1966 [10 Nov., 1965], No. 47814/65. Heading A4F. A windscreen wiper blade is connected to a wiper arm by a connector comprising two plastics elements 2 and 3, the element 3 being provided with a cavity bounded by two resilient end walls having aligned apertures 9 therein and the other element 2 consisting of a block having pins 4 projecting from opposite faces thereof, the two elements 2, 3 being so connected together by pushing the block into the cavity until the pins 4 engage with the apertures 9 that the elements 2, 3 can rock relative to each other about the axis of the pins 4. The element 3 which may be pivotally connected to or integral with the wiper arm is provided with slots 10 to allow flexing of the end walls of the cavity when the two elements are assembled together and the element 2 may be pivotally connected to the wiper blade member 1.
Patent GB-957396-A (GB)
Title: Manufacture of petroleum coke
Inventor: ALLEN DAVIS
IPC: C10B43/14
Filed: 1962-12-20
Abstract: In a process for producing coke by the delayed coking process of a hydrocarbon oil, a small quantity of a liquid hydrocarbon, e.g. gas oil from the fractionator is delivered into a line conveying vapours from the top of the coke drum or drums to prevent coke formation in the line.  The coking process is as described in Specification 929,007, except that gas oil at 80 DEG  to 600 DEG  F. in an amount of 0.5 to 10% of the furnace and drum charge rate is delivered to the vapour line, i.e. 50 to 1300 barrels of gas oil per day.  The liquid is preferably sprayed into the line, and instead of gas oil, any liquid hydrocarbon ranging from gasoline to residual and thermal tar may be used.  Pressures in the coke drums range from 20 to 80 p.s.i. and temperatures from 910 DEG  to 925 DEG  F.
Patent GB-1439508-A (GB)
Title: Tube expander
IPC: B21D39/20
Filed: 1973-10-16
Abstract: 1439508 Tube expanders MANNESMANN-MEER AG 16 Oct 1973 [24 Nov 1972] 48243/73 Heading B3J  In a tube expander in which segments 8 are expanded by a truncated pyramidal member 7 which is connected by a tube 5 to a piston 2, limit switches 19, 20 controlling the supply of fluid to the cylinder are operated by one end of a rod 16 which passes through the piston and is connected to the expander-end of the tube 5. Thus control is achieved through a member which is not placed in tension during operation of the expander. The rod 16 may also be a tube through which lubricating and/or cooling medium may be supplied or discharged and can maintain the tube 5 at constant temperature.
Patent GB-1013084-A (GB)
Title: Heat exchange unit
Inventor: RODWELL WILLIAM
IPC: G21C1/00
Filed: 1963-12-06
Abstract: 1,013,084. Cooling reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Nov. 6, 1964 [Dec. 6, 1963], No. 48369/63. Heading G6C. [Also in Division F4] A nuclear reactor core and associated heat exchanger are housed in a single container, and the heat exchanger is in the form of units each comprising two parallel headers between which are connected a parallel array of tubular elements; each tubular element comprises two coils, one encircling each header, joined in series; the headers are arranged circumferentially round an annular chamber surrounding the core. The reactor is of the pressurized water type utilizing forced circulation between the core and heat exchangers, the pumps being mounted in thimbles in the top closure member of the pressure vessel. Water in the heat exchange unit flows outwards from one of the headers 45 in a spiral formed from two tubes 46; it is then passed to two further tubes 46 in which it flows inwards in a rotationally opposite sense, to discharge into the second header 45. The spirals forming each parallel pass lie in a common plane perpendicular to the headers. The units are designed to permit the plugging of the ends of a faulty tubular element, by means of plug inserting devices which can be positioned within the headers.
Patent GB-1281033-A (GB)
Title: Improvements to reversible ratchet spanners
IPC: B25B13/46
Filed: 1969-10-03
Abstract: 1281033 Ratchet spanners FORGES STEPHANOISES SA 3 Oct 1969 [4 Oct 1968] 48603/69 Heading B3N A reversible ratchet spanner comprises a member 5 rotatably mounted by cylindrical bearing surfaces 2 in a body 1 wherein the member has a milled portion 30 for manual rotation of the member. A ratchet 14 is controlled either by a lever 19 or a milled stud, Figs. 3 and 4 (not shown). A lever arm 1a may be made detachable, Figs. 3 and 4 (not shown).
Patent GB-1484153-A (GB)
Title: Micellar dispersions with tolerance for extreme water hardness for use in petroleum recovery
IPC: E21B43/20
Filed: 1974-11-11
Abstract: 1484153 Hydrocarbon emulsions TEXACO DEVELOPMENT CORP 11 Nov 1974 [3 Dec 1973] 48621/74 Heading B1V [Also in Division El] Oil is recovered from a subterranean reservoir by injecting a dispersion comprising (a) a hydrocarbon, (b) an aqueous liquid containing 500-10,000 ppm of polyvalent cations, and (c) a surfactant composition having a water soluble salt of an alkyl or alkylaryl sulphonate having the formula: in which R is a linear or branched alkyl radical having 5-25 carbon atoms, X is a sulphonate radical, and Y<SP>+</SP> is a monovalent cation, and a polyoxyalkylated alcohol or polyoxylated alkyl phenol having the formula: in which R' is a linear or branched alkyl radical having 5-20 carbon atoms and n is a number from 3-20. Preferably Y<SP>+</SP> is a sodium, potassium or ammonium ion, and the hydrocarbon is crude oil, a side cut from a crude column overhead, gas oil, kerosene, heavy naptha, straight run gasoline, liquified petroleum gas or a light hydrocarbon having 1-6 carbon atoms. The dispersion may comprise 1-90% by weight of the hydrocarbon and 99-10% by weight of aqueous liquid and surfactant, each surfactant being in an amount of 0.05-5% by weight, based on aqueous liquid. The dispersion may also contain 100-5000 ppm of a hydrophilic polymer. The dispersion, which may contain a gas, may be preceded by a preflush containing a sacrificial agent and a hydrophilic polymer, and may be followed by a driving fluid.
Patent GB-1484155-A (GB)
Title: Arrangement for generating pulse sequences
IPC: G06F1/04
Filed: 1974-11-11
Abstract: 1484155 Code conversion; pulse sequence generation TELEFONAKTIEBOLAGET L M ERICSSON 11 Nov 1974 [22 Nov 1973] 48758/74 Headings G4H and G4D In an arrangement for generating any one of a plurality of pulse sequences, the pulse sequence is obtained as the output of a comparator comparing a clock-driven counter with the output of a memory (e.g. read-only) addressed by a second counter which is preset with a number determined by which sequence is required and stepped by each output from the comparator. Thus the memory holds, for each possible sequence, numbers representing the distances between successive pulses of the sequence.
Patent GB-1509129-A (GB)
Title: Adjustable sequence valve for towing winch hydraulic controls
IPC: B66D1/24
Filed: 1976-09-10
Abstract: 1509129 Valves CATERPILLAR TRACTOR CO 10 Sept 1976 [2 Feb 1976] 48778/77 Divided out of 1509128 Heading F2V A shut-off valve for use in the control system of a winch with fluid pressure-operated clutches has a spring closed valve member 305 responsive to inlet pressure and a plunger 311 which has a radially extending stop pin 313 and a spring seat 312. The plunger 311 is rotatable to position the pin 313 on one of a pair of V-grooves 316, 317 at different distances from the valve member. The plunger 311 has a slot 318 for screw-driver adjustment.
Patent GB-1160381-A (GB)
Title: Improvements relating to Semiconductors and Methods of making Semiconductors.
IPC: C23C14/04
Filed: 1966-11-01
Abstract: 1,160,381. Semi-conductor devices. TEXAS INSTRUMENTS Inc. 1 Nov., 1966 [6 Dec., 1965], No. 48847/66. Heading H1K. A semi-conductor device is made by depositing on a semi-conductor substrate a metal film so thin that it is in the form of isolated islands and making electrical contact to only some of these islands. Schottky diodes of this type are made by cleaning the surface of a tellurium or tin-doped N-type gallium arsenide body by heating in vacuum and then evaporating gold on the body while it is held at 300 C. to form a layer consisting of islands 400-500 thick 0À1-1 Á in diameter. The resulting structure is mounted on a metal stud threaded into a plastics cup. A probe of 0À1-0À3 mil tip diameter is pressed into contact with one or more of the islands and moved around to find a contact with the required electrical characteristics. The probe is mounted on a threaded adjustment stud or is carried by a resilient diaphragm which the stud bears on. If separate contact is made to two of the contacts about a mil apart a point contact transistor can be formed. Connection to the contacts may alternatively be made by evaporated gold layers extending through holes in an oxide film. Transistors of the junction or field effect type may be made by depositing isolated goldgallium alloy contacts over the control area of a diffused N-type surface (base) layer on a P-type germanium (collector) substrate and depositing gold-antimony to form strip electrodes or areas of isolated contacts on either side of the central area. These serve as base contacts in the junction transistor or as source and drain in the field effect device, the goldgallium contacts functioning as emitters and gates respectively.
Patent GB-1067356-A (GB)
Title: Improvements in or relating to fluid flow regulators
IPC: F15B11/15
Filed: 1964-12-02
Abstract: 1,067,356. Hydrostatic transmission. H. TEVES, E. A. TEVES, and M. TAUSEND, [trading as ALFRED TEVES MASCHINENUND ARMATURENFABRIK KOMM GES.]. Dec. 2, 1964 [Dec. 18, 1963], No. 48970/64. Addition to 1,038,219. Heading F2D. [Also in Division G3] A hydrostatic transmission comprises a pump 1, motor 3, an accumulator 4 and a flow regulator made up of multiway valves 6, 7 with a common rod 15; with the valves in the position shown the pressure fluid from the pump passes through the motor 2 into the pump supply-line 16 by valve 7. The accumulator 4 is charged through a line 18 and a restriction 5, the pump and accumulator pressures acting on the valve 6 so that when the latter pressure exceeds a given value both valves 6, 7 are moved, thereby against a spring 9 into the reverse positions wherein the motor is not driven by the pump output but by the inertia of the members to which it is coupled so that it acts as a pump to force fluid via a check valve 3 into the line 18 and hence through the restriction and valve 6 into the line 16. The pressure drop across the restriction 5 reduces the accumulator pressure to such a value that the spring 9 is enabled to return the valve 6, 7 to the positions shown whereupon the cycle continues at a frequency which is determined by the force of the spring 9. A spring-loaded detent 11 is associated with the valves.
Patent GB-1472762-A (GB)
Title: Drafting machine
IPC: B43L13/00
Filed: 1974-06-24
Abstract: 1472762 Drafting apparatus M KAITATZIDIS 24 June 1974 [25 June 1973 14 May 1974] 49329/76 Divided out of 1472761 Heading G1X The description is substantially identical to that of the parent application but the claims are directed to a drafting machine comprising a rectangular drafting frame (12), a continuous guide groove (5) provided on the frame and having portions parallel to each side edge of the frame joined by rounded corner portions (19), at least one slide element (2) dispersed in the groove, and a drawing instrument (1) connected to the or each slide element (2), the or each slide element (2) having a rounded surface, when viewed in a cross-sectional plane parallel to the frame, facing inwardly of the frame to enable it to slide around the corner portions (19) of the groove.