baber/WOPTO huggingface dataset:
Patent GB-1195998-A (GB)
Title: Improvements in and relating to controlled Semi-Conductor Devices.
Inventor: SVEDBERG PER
IPC: A23L19/18
Filed: 1967-10-30
Abstract: 1,195,998. Thyristor circuits. ALLM€NNA SVENSKA ELEKTRISKA A.B. 30 Oct., 1967 [31 Oct., 1966], No. 49159/67. Heading H3T. [Also in Division H1] Controlled rectifiers (exemplified by fourlayer structures) are designed to handle very high power in the period immediately following ignition by ensuring that the distribution of gate current is widespread and uniform. To do this, both emitter and gate electrodes are provided on the emitter region but are separated by a high-resistance zone of uniform properties. (In the structure shown, high conductivity surface material is removed from the emitter region to leave a high-resistance zone at the bottom of a groove 8.) In variants several highresistance zones may be formed to separate parts of the emitter region which are each provided with a gate or emitter electrode. The gates and emitter are respectively strapped together, either directly or through current dividing impedances. To obtain the desired characteristics a high firing current is needed. This is provided by auxiliary thyristor 21 which may be formed in the same semi-conductor body as the main rectifier. When the auxiliary thyristor is fired by the closure of switch 22, the voltage drop across impedance 20 produces the necessary firing current in the main rectifier. (For structural detail, see Division H1.)
Patent GB-1260257-A (GB)
Title: Light sensitive apparatus
IPC: H04B10/60
Filed: 1970-10-16
Abstract: 1,260,257. Photo-electric apparatus. COMPAGNIE GENERALE D'ELECTRICITE. Oct.16, 1970 [Oct. 17, 1969], No. 49223/70. Heading G1A. In a photo-electric arrangement in which light is incident on a photo-detector 2, Fig. 2 through an optical filter 3, light from an auxiliary test source 4 is directed on to the photo-detector by reflection from the emergent face of the optical filter. Other optical elements may be included in the path between the filter and detector.
Patent GB-1514568-A (GB)
Title: Polymeric reaction products useful as pigment dispersing agents
IPC: C09K23/00
Filed: 1975-12-02
Abstract: 1514568 Polymeric reaction products; pigment dispersants ICI AUSTRALIA Ltd 2 Dec 1975 [24 Dec 1974] 49451/75 Addition to 1510190 Heading C4A [Also in Division C3] Polymer derivatives useful as pigment dispersants comprise the reaction product of (a) an oligomer of a hydroxycarboxylic acid of the formula HO-X-COOH where X is a divalent aliphatic radical containing at least 8 carbon atoms (at least 4 thereof being in the linear chain between the indicated functional groups) and (b) an acrylate or alkacrylate copolymer including units having a structure derived from a cleaved heterocyclic ring compound and containing a group which is reactive with the oligomer (a). In Examples component (a) is poly(12-hydroxystearic acid), and component (b) is a product obtained by reacting a (meth)acrylate/glycidyl (meth)acrylate copolymer with an aminoalcohol (or hydroxyamine) and optionally quaternizing the product; the products are used as pigment dispersants in printing inks, paints and lacquers.
Patent GB-1033847-A (GB)
Title: Control circuit for coal cutting machine and conveyor
Inventor: EGEN HEINRICH
IPC: E21C29/14
Filed: 1964-12-07
Abstract: 1,033,847. Mineral-mining installations. GEWERKSCHAFT EISENHUTTE WESTFALIA. Dec. 7, 1964, No. 49672/64. Heading E1F. To prevent overloading of a conveyer along which a coal cutting machine is hauled there is provided means, piston cylinder assembly for causing throttling of the supply of pressurised liquid from a pump to the driving motor of the haulage means of the cutting machine on a rise of pressure occurring in the supply conduit by which pressurized liquid is supplied from another independently driven pump to the driving motor of the conveyor.
Patent GB-1120739-A (GB)
Title: Rotatable ball-valve
IPC: F16K5/06
Filed: 1965-11-25
Abstract: 1,120,739. Valves. B. C. RICHARDS & CO. PTY. Ltd. 25 Nov., 1965 [21 May, 1965], No. 50096/65. Heading F2V. A rotatable ball plug valve has a seat comprising a sealing ring 10 shaped to seal on the plug and with a rear inwardly tapered face 15. A backing ring 11 of hard material is tapered to fit the ring 10. The seat is urged by pressure, e.g. that of a corrugated spring, into sealing engagement with the ball. The sealing ring forms the sole contact with the ball and also seals the housing. Ring 10 may be of P.T.F.E. or metal, or it may be rubber in which case the spring may be omitted.
Patent GB-1121659-A (GB)
Title: Improved liquid sampling device
IPC: G01N1/12
Filed: 1964-12-10
Abstract: 1,121,659. Sampling liquids. A. N. BLADES. 9 Dec., 1965 [10 Dec., 1964], No. 50254/64. Heading B8N. An apparatus for sampling a liquid comprises a catchment means 10 secured to a shaft 1 adapted to be rotated. The catchment means shown is provided with two holes 11 in a base 9, the holes being inclined to the axis of the shaft. In use, the shaft is rotated at high speed by means of a motor (3, Fig. 1), and then the catchment means lowered by means of a handle (6) into a container (7) for the liquid being sampled. The catchment means, which may be of metal, plastics material, glass or ceramics, fills with liquid and when it is raised out of the container the surplus liquid is thrown out only a certain proportion being retained in the catchment means by centrifugal force dependent upon the rotational speed of the shaft. In modifications, the catchment means may be formed by an inwardly curved rim connected to the shaft by means of ribs, or a shallow cylindrical open-topped vessel having two diametrically-opposite curved dimples in its wall. The catchment means may also be formed by an outwardly flared cup member having a curved groove in its inner wall, or by an inverted cup-shaped member having an inwardly directed wall, Fig 8 (not shown).
Patent GB-1116049-A (GB)
Title: Improvements relating to containers of synthetic resinous material
IPC: B65D81/26
Filed: 1964-12-12
Abstract: 1,116,049. Plastics containers. CHARLES TENNANT & CO. Ltd., and J. D. L. DIXON. 3 March, 1966 [12 Dec., 1964], No. 50701/64. Heading B8P. A stackable plastics container is made by moulding a hollow closed box and cutting the top of the box peripherally to provide access. The top may be partially out to provide an integral hinged lid or completely to provide an open-topped container. In a particular embodiment a fish-box, Figs. 1 and 4 (not shown), has a hinged lid (5) closing a necked opening surrounded by sloping shoulders (7) with drain channels (14), into which fit ribs (15) on a ridge (12) surrounding the recessed bottom of a similar container when stacked. The ribs (15) have drain holes so that water from the top container will flow through the channels (14) over the sides of the lower container. The ribs (15) may be on the shoulders (7) and the channels (14) on the bottom ridge (12). Recesses (17) with apertures (18) are provided in the end walls to facilitate handling.
Patent GB-1283244-A (GB)
Title: A composite armour panel and a method of making the same
IPC: C23C24/00
Filed: 1969-10-17
Abstract: 1283244 Armour plating NORTON CO 17 Oct 1969 [21 Oct 1968] 51203/69 Heading B5N [Also in Division F3] A composite armour panel is made by removing material from at least one surface of a ceramic plate to reduce the thickness of the plate by 0À003 to 0À05 inch and then adhering the plate to a backing element. For example a layer is removed by grinding from one face of a hot-pressed boron carbide plate and the plate is adhered to a glass cloth laminate by means of an epoxy or polyester resin adhesive. Other ceramics referred to are alumina, boron carbide, silicon carbide, titanium boride, and aluminium boride. The surface layer may also be removed chemically, thermally, or by electro discharge machining.
Patent GB-1086910-A (GB)
Title: Improvements in or relating to stunning pens
Inventor: COLLINS RAYMOND
IPC: A22B5/02
Filed: 1965-12-03
Abstract: 1,086,910. Stunning pens. LOCKERBIE & WILKINSON (TIPTON) Ltd. Dec. 3, 1965, No. 51330/65. Heading A1M. A stunning pen having front and side walls and an entrance gate 22 is provided with a pivotally mounted abutment 37 movable by means of a fluid-operated jack 45 to engage the rump of an animal in the pen to move the animal so that its head is adjacent the front wall 17 of the pen. The abutment comprises spaced parallel members interconnected by cross members and pivoted on shaft 38 mounted in the side walls of the pen. The effective width of the pen is adjusted by means of a panel 49 mounted at each end on a lazy-tongs mechanism 50 and extended and retracted by hydraulic jack 60. A shutter prevents the animal from passing behind panel 49. The floor 28 of the pen is pivotal about a horizontal axis and is connected to a sliding wall panel 31 held in position by catches which are released when the animal is stunned, the weight of the animal causing the floor to pivot downwardly thus raising the panel 31.
Patent GB-1517930-A (GB)
Title: Electrical circuitry for use in evaluating time parameters of an electrical signal of varying magnitude
IPC: G04F10/00
Filed: 1975-12-17
Abstract: 1517930 Measuring pulse parameters SIEMENS AG 17 Dec 1975 [23 Dec 1974] 51707/75 Heading G1U By comparing A, B, an input pulse with high and low reference signals (equal to 90% and 10% of the expected height of the pulse), two pulses are produced by a NOR gate G1, the first lasting while the leading edge rises from the low to the high level, and the second while the trailing edge falls from the high to the low level, and these pulses are gated respectively to the outputs of NOR gates G2 and G4. The circuit also includes a NOR gate G5 which produces a pulse lasting while the input pulse is above the low level, and a NOR gate G6 which produces a pulse lasting from the application of a start pulse to the circuit until the input pulse first rises above the low level. As described the start pulse resets all four bi-stables F1, ., F4, to the state in which their Q outputs are high (= 1). Also low (= 0) control signals are applied to open gates G2, G4, G5 and G6. The first pulse (i.e. the rise pulse) produced by gate G1 then passes via inverter 12 and gate G2 to the output - as mentioned above - and its trailing edge changes over bi-stable F1. The second pulse from gate G1 then finds gate G2 shut but gate G3 open, and it passes via inverter 14 and gate G4 to the output. Its trailing edge changes over bi-stable F2 so that now both gates G2 and G4 are closed. The pulse from comparator B, which is low (= 0) for the period when the input pulse exceeds the low level, passes out via gate G5, and its trailing edge changes over bi-stable F3 so that gate G5 is thereafter closed. Finally, the start pulse, by resetting the Q output of bi-stable F4 low (= 0) produces an output via gate G6, which continues until bi-stable F4 is set by the occurrence of the leading edge of the pulse from the comparator B.
Patent GB-1335760-A (GB)
Title: Process for the manufacture of cation-active starch derivatives  and propylammonium halides
IPC: C08B31/12
Filed: 1971-11-09
Abstract: 1335760 Cationic starch derivatives HOFFMANNS STARKEFABRIKEN AG 9 Nov 1971 [9 Nov 1970] 52095/71 Heading C3U [Also in Division C2] Cation active starch derivatives are obtained by reacting starch with a 3-halo-2 hydroxypropyl- or 2,3-epoxypropylammonium halide in alkaline medium e.g. NaOH, preferably in the presence of NaCl or Na 2 SO 4 . Exemplified reactants are (Et 3 N-CH 2 -CHOH-CH 2 Cl)-Cl<SP>+</SP> and the corresponding epoxy compound.
Patent GB-1199294-A (GB)
Title: Rotary Piston Internal Combustion Engine
IPC: F02B53/04
Filed: 1967-11-16
Abstract: 1,199,294. Rotary-piston I. C. engines. TOYO KOGYO K.K. Nov. 16, 1967 [Nov. 16, 1966; Nov. 17, 1966;], No.52192/67. Heading F1F. In a rotary-piston I. C. engine of the trochoidal n and n + 1 lobe type two pistons 3 are mounted on eccentrics 6, 6<SP>1</SP> upon a common power-output shaft 5, and to facilitate operation at light-loads primary and secondary induction-ports 11,12 and 13,14 are provided as shown, which ports are served by primary and secondary carburetters 16 and 17,18 in a carburetting device 15. When the engine is lightly loaded only the carburetter 16 is employed, and when the load increases the carburetters 17,18 are used either per se or in addition to the carburetter 16. The ports aforesaid are designed to suit the loads at which they are intended to be used. The locations of the ports 11,12 and 13,14 may be exchanged, Fig. 3 (not shown), and the ports 11,12 may be connected by separate conduits (19c, 19d), Fig. 4 (not shown), to respective primary carburetters (16,16<SP>1</SP>), the ports 13,14 being connected to a common secondary carburetter (18) by corresponding conduits (20, 20<SP>1</SP>) containing throttling valve-members (23,24).
Patent GB-1183322-A (GB)
Title: Improvements in or relating to Pulverising Machines
Inventor: MCCANDLESS RICHARD
IPC: B02C13/22
Filed: 1965-12-09
Abstract: 1,183,322. Impact pulverizers. DAVIDSON & CO. Ltd. 7 March, 1967 [9 Dec., 1965], No. 52203/65. Heading B2A. An impact pulverizer, for coal or other minerals, comprises a casing formed by a ring 10 closed by top and bottom plates 11, 16, Fig. 2, forming first and second end walls, an axial inlet 12 in the first end wall 11 and radially extending outlets 13 Fig. 1, in the circumferential wall of the ring. An impeller 17 mounted on a coaxial shaft 14 and driven by a motor 15 includes a disc 18 with blades 20 mounted thereon adjacent the inner circumferential wall of the ring. A first circle 21 of pegs is mounted on an annular plate 22 detachably secured to the disc 18 so as to surround the shaft. A second circle 23 of pegs is mounted on the wall 11 to surround the circle 21 between it and the blades 20. A third circle 24 of pegs surrounds the blades 20, the pegs being square, detachably mounted on an annular plate 25 secured to the wall 16, and each having one diagonal radially aligned. Air holes 26 are provided in a boss 19 on the impeller shaft 14 to clear dust from below the disc 18. The outlets 13 may lead direct to storage bins or other equipment, e.g. kilns.
Patent GB-1496664-A (GB)
Title: Method for removing sulphur dioxide from stack gases
IPC: B01D53/50
Filed: 1974-12-04
Abstract: 1496664 Removal of SO 2  from waste gas ARTHUR D LITTLE Inc 4 Dec 1974 [13 Dec 1973] 52519/74 Heading C1A Stack gases are washed with an aqueous solution of alkali metal and/or ammonium compounds to form a liquor of the bisulphites, sulphites, and sulphates thereof having a total oxidizable sulphur concentration of at least 0À1 molar, a ratio of bisulphite to sulphite ions of at least 1 and sulphate ion concentration of 0À1-2À8 molar, and one or more calcium compounds are added to the liquor in a first reaction zone to at least partially neutralize and produce a precipitate of calcium sulphite-sulphate, and the residence time in the first zone is limited to minimize dissolution of the CaSO 4  crystals present in the precipitates, the reaction mixture is divided into 2, the precipitated solids in 1 part being separated, and the other part being transferred to a second reaction zone to continue reaction, with further addition of calcium compounds if necessary to complete neutralization, to produce a second precipitate of calcium sulphite.
Patent GB-1076840-A (GB)
Title: A telephone calling dial
Inventor: MONTE GIORGIO DAL
IPC: H04M1/31
Filed: 1964-12-28
Abstract: 1,076,840. Telephone dials. SOCIETA' ITALIANA TELECOMUNICAZIONI SIEMENS S.p.A. Dec. 28, 1964, No. 52581/64. Heading H4K. In a telephone dialling mechanism in which numbered holes are spaced equally around the whole circumference of the dial plate due to its reduced diameter, the stop member is allowed limited movement so as to provide the rotation of the dial normally provided for by the free space on the dial. The stop member 20 is located underneath the dial plate 10 and is rotated about the spindle towards a stop position upon rotation of the dial by a depressed one of the pins 19, each one of which is associated with a numbered hole. The stop member is returned to its initial position upon release of the dial.
Patent GB-1439249-A (GB)
Title: Stackable tray and blank for making same
IPC: B65D5/00
Filed: 1973-11-15
Abstract: 1439249 Stackable cartons EPEX 15 Nov 1973 [15 Nov 1972 29 Dec 1972] 53068/73 Heading B8P A carton of double faced corrugated cardboard has a stacking ledge formed by a tab 8a, Fig. 2, with a portion 8b secured to a wall 3 and upstanding locating portions 7 formed by a tab on the wall 3 secured to the outside of a wall 2. Fold lines 9, 10, 11 are inclined slightly so that a taper is given to walls 2, 3 enabling one box to enter the top of a lower box when stacked. In another construction, Fig. 8, the tab is slit horizontally at 12 the lower part 8c being secured flat against the wall 3 and the upper part 8b being creased to form a triangular stacking panel 8d. In a variation (Fig. 4, not shown) the panel 8d is rectangular and in a further construction fold lines 10a, 11a forming the triangular panel 8d extend the full depth of the tap and the slit 12 is omitted. Again, if circular articles are to be packed in the carton the triangular panel may have an additional central crease to approximate more closely to the shape of the articles. If the carton is to be collapsible two opposite sides have an inclined crease (23, Fig. 12, not shown) and the corner ledge is rectangular in plan (see Fig. 14) and is pushed into position after the carton has been erected. In a modification, Fig. 17, the stacking ledge is formed by a triangular panel 25 extending from the side 2 and secured to side 3 by a tab 26 passed through an aperture 27 in side 3.
Patent GB-1136924-A (GB)
Title: Method of diffusing impurities into solid materials
IPC: C30B31/18
Filed: 1965-12-15
Abstract: 1,136,924. Making semi-conductor devices. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 15 Dec., 1965 [23 Dec., 1964], No. 53308/65. Heading H1K. Impurities are selectively diffused into localized regions of semi-conductor bodies which have been treated by irradiation to have lattice defects enabling rapid movement of impurity atoms into the semi-conductor. This localized irradiation is effective as a masking process and may be carried out using α, # or γ irradiation or neutron bombardment. In an embodiment an area of an N-type silicon wafer is subjected to electron beam bombardment, and boron is diffused from the vapour phase into the treated region. A diode is completed by providing an aluminium contact on the P-type region thus formed and a nickel contact on the N-type body. The specification states that the invention may be applied to the introduction of impurities into insulators and conductors.
Patent GB-1487234-A (GB)
Title: Method of manufacturing a magnetic head
IPC: G11B5/31
Filed: 1974-12-11
Abstract: 1487234 Manufacturing magnetic heads PHILIPS ELECTRICAL & ASSOCIATED INDUSTRIES Ltd 11 Dec 1974 [14 Dec 1973[ 53570/74 Heading B3A A method of manufacturing a magnetic head comprises forming a layer of a magnetizable Ni-Fe alloy on a substrate 21, Fig. 3, depositing an auxiliary layer 23 of at least one of the materials titanium, titanium oxide and silicon oxide on to the alloy layer, preparing a layer of photo-resist 24 on the auxiliary layer in a pattern corresponding to the desired pattern in the alloy layer, and chemically etching the auxiliary and Ni-Fe alloy layers in an etching bath. In an embodiment, a Ni-Fe alloy layer (22), Fig. 2 (not shown), is sputtered on to a silicon substrate 21 which has a silicon oxide layer (not shown). A layer 23 of titanium is sputtered on the alloy layer in a pattern which does not cover a central part 17 of the head adjacent a gap 15. The photo-resist layer 24 is provided in a pattern and the layers (22), (23) are simultaneously etched in a bath consisting of a solution of sulphuric acid and hydrogen peroxide. Addition of 1, 2 or 4 parts by volume of 40 wt. per cent hydrogen fluoride solution provides angles of inclination of layer (22), 16 of 56, 37 and 20 degrees respectively. The layer 24 is removed with a 1% hydrogen fluoride solution. The layer (22) may be constructed of alternate layers of Ni-Fe alloy and insulation material, e.g. silicon oxide. A titanium oxide layer may be provided on the silicon oxide layers and silicon oxide used as an auxiliary layer. The etching bath is modified by the addition of ammonium fluoride solution. The finished head has a Ni-Fe alloy core 12 of which a layer part 16 is surrounded by turns 13, 14 insulated from the part. The layer part 16 has steep edges in the region of the central part to accurately adjust the width of the gap 15.
Patent GB-1137149-A (GB)
Title: Variable ratio transmission mechanism
IPC: F16H47/08
Filed: 1966-11-30
Abstract: 1,137,149. Variable-ratio gear. BORGWARNER CORP. 30 Nov., 1966 [13 Dec., 1965], No. 53583/66. Heading F2D. In a variable-ratio transmission for a vehicle, providing five forward ratios and reverse, and in which the engine is connected via a torque converter 15 to the input shaft 13 of a changespeed gear-box 10 comprising three threeelement planetary trains 16-18, the sun gears 42, 62 of the trains 16, 17 being connected by a hollow shaft 43, the planet carriers 41, 82 of the trains 16, 18 being connected by a shaft 14, and the carrier 61 being fast with sun gear 81, ratio shifts are effected by the selective engagement of two of four friction devices comprising two clutches 45, 65 connecting the planet carrier 41 to the ring gears 40 and 60 respectively, and two brakes 70, 90 braking the ring gear 60 and carrier 61 respectively. Each successive shift from first through to fifth involves the disengagement of only one of two engaged friction devices and the engagement of a further device, obviating the necessity for shift timers. Neutral exists when none of the friction devices are engaged. First ratio drive (4À97 : 1) is obtained through all three gear trains by application of clutch 65 and brake 90, rotation of ring gear 40 effecting, through the second gear train 17, increased reverse rotation of sun gear 42 driving the carrier 41, and hence the carrier 42, at a reduced forward drive ratio, the ring gear 80 being rotated at a reduced forward ratio since the sun gear 81 is braked. Second ratio drive (3 : 1) is obtained through the first and third gear trains by application of brakes 70, 90, rotation of ring gear 40 driving the carriers 41 and 82 at a reduced ratio since the ring gear 60 and carrier 61, and hence sun gears 62, 42, are braked. Third ratio drive (1À83 1) is obtained through the first and third gear trains by application of clutch 45 and brake 90, the first gear train 16 being locked up to drive carrier 82, and sun gear 62, at a 1 : 1 drive ratio, and the ring gear 80 at a reduced drive ratio, ring gear 60 idling. Fourth ratio drive (1À40 : 1) is obtained through all three gear trains by application of clutch 45 and brake 70 locking up the first gear train and driving carrier 82 and sun gear 62 which, since ring gear 60 is braked, drives the carrier 61 and hence sun gear 81 at a reduced forward drive ratio, to drive the ring gear 80 at a reduced forward drive ratio. Fifth ratio drive (1 : 1) is obtained by application of both clutches 45, 65 to lock-up all three gear trains 16-18. Reverse ratio drive (3À78 1) is obtained through all three trains by engaging clutch 65 and brake 70 to brake the carriers 41 and 82 and the ring gear 60, rotation of ring gear 40 driving the sun gears 42, 62 at an increased reverse drive ratio, the carrier 61, and hence sun gear 81, being driven at a reduced reverse ratio and driving the ring gear 80 at a reduced reverse drive ratio. The clutches and brakes are of the multifriction-disc type engaged by fluid actuated annular pistons.