baber/WOPTO huggingface dataset:
Patent GB-1502380-A (GB)
Title: Amphoteric hetero-junction semiconductor devices
IPC: H01L33/20
Filed: 1975-12-19
Abstract: 1502380 Semi-conductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 Dec 1975 [24 Dec 1974] 52043/75 Heading H1K A semi-conductor device including a heterojunction is formed by epitaxially depositing layers 2-5 on a substrate 1 by cooling a solution containing an amphoteric dopant so that the conductivity type of the deposited layer 3 changes as the temperature falls to a transition temperature T 1 , and modifying the composition of the solution at a temperature T n  lower than T 1  so as to alter the conductivity type and the composition of the deposited layer 4, the modified solution having a new transition temperature T 2  lower than T n  so that a further change in conductivity type of the deposited layer 5 occurs if the temperature falls to T 2 . The amphoteric dopant may be Si or Ge and the solution may be GaAs whose composition is altered by adding Al. The device so-formed may be a transistor, a thyristor, a LED formed by Zn-diffusion, or a matrix of LEDs. The various temperatures are specified. Reference has been directed by the Comptroller to Specification 1,170,800.
Patent GB-1066278-A (GB)
Title: Mail sorting apparatus
IPC: B07C5/22
Filed: 1964-12-22
Abstract: 1,066,278. Feeding sheets &c. ECON-O-POST CORPORATION. Dec. 22, 1964 [Jan. 2 1964], No. 52071/64. Heading B6B. [Also in Divisions B8 and G1] A separating mechanism 18 associated with a mail sorting apparatus (see Division B8) separates envelopes fed thereto in randomly occurring thicknesses. The mechanism comprises a feeder wheel 20 carrying a friction surface 22 extending around a limited arcuate extent of the wheel 20 thereby effecting an intermittent feed of the envelopes. As an envelope or an overlapping plurality thereof pass into the mechanism, a switch 68 is operated to arrest the envelope feeding conveyer, and a non- rotatable friction wheel 50 is lowered through linkage arrangement 42, 32, 64, 30, under the control of a cam 26 on the feeder wheel 20. The friction wheel 50 presses down on the uppermost envelope while the friction surface 22 engages the lowermost envelope and moves it forwardly into the sorting apparatus. This operation is repeated until the mechanism is free of envelopes, whereupon the switch 68 is operated to initiate further feeding of envelopes. The friction wheel 50 mounted on an arm 46, pivoted at 48 to the member 42 of the linkage arrangement, is movable up and down relative to the member 42 through link 56, 58. When the linkage member 42 is raised above a set minimum distance from the conveying surface 63, e.g. by thick envelopes, the friction wheel 50 is lifted above a relatively smooth pressure pad 44 on the member 42, which pad then engages the envelope as it passes through the mechanism.
Patent GB-1117978-A (GB)
Title: Tooth point assembly for an earth digging structure
IPC: E02F9/28
Filed: 1966-11-22
Abstract: 1,117,978. Earth-excavating teeth. PAGE ENGINEERING CO. 22 Nov., 1966 [17 Feb., 1966], No. 52253/66. Heading E1F. In a tooth point assembly the tooth is held on a tooth body by the grip between forwardly directed, spaced apart stubs of the tooth body and the walls of a socket in the rear of the tooth when the stubs have been sprung together by engagement with the walls of the socket when the tooth is drawn or driven on over the stubs.
Patent GB-1200118-A (GB)
Title: New water-insoluble perinone dyestuffs and process for their manufacture
IPC: C09B57/12
Filed: 1967-11-21
Abstract: 1,200,118. Perinone dyestuffs. CIBA Ltd. 21 Nov., 1967 [21 Nov., 1966; 16 Oct., 1967; 13 Nov., 1967], No. 52876/67. Heading C4P. The invention comprises compounds of the formula where one X is H and the other is a group of the formula Y and Y 1  are O, S or an imino group and A and Ar are optionally substituted aromatic residues. The compounds may be prepared by reacting together compounds of the formulµ where one Z is H and the other is halogen or a sulphonic acid group or by reacting a compound of the formula where X is a group of Formula II or an anhydride thereof with an aromatic diamine whose amino groups are in ortho- or peri-position relatively to each other.
Patent GB-1132389-A (GB)
Title: Food product
Inventor: GOODWIN HUGH HANCHARD
IPC: A23L19/12
Filed: 1966-12-01
Abstract: 1,132,389. Frozen food. WHITE FISH AUTHORITY & HERRING INDUSTRY BOARD. 25 Oct., 1967 [1 Dec., 1966], No. 53894/66. Heading A2B. A frozen food product to be fried, in the form of blocks, fingers or bars, comprises 20-35% by weight of raw or smoked fish, a greater percentage of partially or completely cooked potato and flavouring additives. The product may be made by forming a homogenous dough of the components, cooking the dough, e.g. in oil, extruding the dough to the desired shapes, and freezing. The product may be packed. The dough may comprise raw or smoked cod roe, kippers, dry potato powder, salt, monosodium glutamate, amylopectin, soya flour, glyceryl monostearate and water.
Patent GB-1119489-A (GB)
Title: Twin vortex angular rate sensor
IPC: G01F1/32
Filed: 1966-12-02
Abstract: 1,119,489. Speedometers. UNITED AIRCRAFT CORP. Dec.2, 1966 [Jan. 4, 1966], No. 53985/66. Heading G1K. [Also in Division G3] A twin vatex angular rate sensor device for sensing rotational movement of a body about an axis X as well as the direction thereof comprises a pair of chambers 10,12 adapted to induce counter-rotating vortex flow of a fluid and sensor means 32 for comparing the vortex outputs 26 for providing a signal in the event of a differential in pressure of flow from the outputs 26, the signal being used to indicate the direction and rate of angular movement of the body. Each chamber comprises a conical chamber 24 in connection with a plen chamber 22 by means of tanjential slots 30. Fluid is fed into the plenum chamber through inlets 18 and depending on the direction of rotation of the shaft the fluid in either chamber 10 or 12 is aided by this rotation so as to induce a greater pressure at one of the outlets 26. A jet of fluid is fed into channel 36 and when the shaft is stationary passes straight through tube 40. However if the pressure of flow is greater at one output than the other, the jet is deflected into one or other of the side tubes 38, 42 depending on the direction of rotation. The device may be used to measure the speed of rotation by determining the volume of fluid rising from the side tube or may be used to control or stabilize the rotation of the body.
Patent GB-1221255-A (GB)
Title: Sample transfer apparatus
Inventor: GOODMAN GEOFFREY WILLOUGHBY
IPC: G01N30/24
Filed: 1968-11-14
Abstract: 1,221,255. Dispensing measured quantities of liquids. BP CHEMICALS Ltd. 28 Oct., 1969 [14 Nov., 1968], No. 53989/68. Heading B8N. [Also in Divisions B1-B2] A sample loading device comprises a rotatable barrel 1 sandwiched between discs 2, 3, urged together by a spring 12 mounted on a backing plate 13. The barrel has several graduated openended chambers 7, 8 which can be aligned accurately with conduits 9, 10 in discs 2, 3 by means of a Geneva mechanism (16), 17 (see Figs. 2, 3, not shown) driven by a synchronous motor 14 activated by an electric pulse from a Crouzet synchronous timer (not shown). Samples for analysis are passed from a suitable source via conduit 10 into chambers 7, 8 where they are trapped when barrel 1 is rotated. When a barrel chamber is aligned with the conduits 9, 10, inert solvent is passed through to flush out the sample into, e.g. a chromatograph, via a conduit in a projection 11. The discs and barrel may be of stainless steel and may have inserts of self-lubricating polytetrafluoroethylene to prevent sample leakage before transfer.
Patent GB-1385028-A (GB)
Title: Briquetting presses
IPC: B30B11/02
Filed: 1971-11-23
Abstract: 1385028 Briquetting presses COOPERS (METALS) Ltd 19 Jan 1973 [23 Nov 1971] 54268/71 Heading B3H A briquetting press of the type with a pelletizing box 12 in which metal swarf is retained by fluid operated rams and compressed by a main ram slidable through a guide bush 15 has its main ram formed of a head 14 and a stem 13 releasably secured together at a position which is outside the bush when the main ram is in its retracted position. The releasable connection comprises a threaded stud 9 engaged in aligned blind bores in the head and'the stem. The positioning of the connection outside the bush enables the main ram to be replaced due to wear without dismantling the press.
Patent GB-1083480-A (GB)
Title: Separating apparatus for separating dispersoid from dispersed liquid
IPC: B01D17/02
Filed: 1965-12-22
Abstract: 1,083,480. Gravity - separation apparatus. MITSUBISHI JUKOGYO KABUSHIKI KAISHA and IMAMURA SEISAKUSHO KABUSHIKI KAISHA. Dec. 22, 1965 [Dec. 23, 1964; Nov. 8, 1965], No. 54472/65. Heading BID. Separating apparatus comprises: an inlet, for a dispersion to be separated, to at least one agglomerating chamber having a flow passage therethrough; a plurality of thinwalled tubes having diameters of less than 10 mms, the tubes substantially filling the cross-sectional area of the flow passage and extending parallel to the flow direction; a first outlet for the dispersion medium; a second outlet for dispersed substances; and further separating means in communication with the agglomerating chamber. In one embodiment, water contaminated with oil and dirt passes through a preliminary gravity separation tank and then into an agglomeration chamber packed with tubes as above specified, where it flows along the tube interiors and also between the tubes. Finally it passes into another gravity separation tank. Draw-offs for solids and for oil are provided at the two gravity separation tanks, and a draw-off for water from the second of these. A combined gravity-separating and clarifying tank, into which congulants may be introduced, may be located prior to the preliminary gravity separation tank. In another embodiment, as shown, contaminated water is introduced to a cell A at 25 to the right of a partition 23b. It flows along the insides of, and between, arcuate tubes 24a and emerges in a space to the left of partition 23b. It then rises through an aperture 23a in a partition (not shown) separating cell A from another cell above it (see below); the oil, however, is intercepted at 27 and passes radially inwards to a region at the lower end of a pipe 28. The water passing through aperture 23a enters the other cell which has identical wall and partition structure, but the tubes are replaced by concentric cylindrical plates, arranged vertically, between which the liquid flows. A further pipe 28 is provided for the oil, while the water rises into a final cell identical with the second one. Pipes 28 are connected to a common outlet, while the water overflows from the uppermost cell and is withdrawn at the bottom. The tube material may be vinyl chloride:
Patent GB-1104223-A (GB)
Title: Improvements in or relating to railway track crossing frogs
IPC: E01B7/12
Filed: 1965-12-23
Abstract: 1,104,223. Rail crossings. SOC. ANON. DES ACIERIES DE PARIS & D'OUTREAU. 23 Dec., 1965 [27 Jan., 1965], No. 54493/65. Heading E1G. A railway track crossing frog assembled to the rails by welding has end portions formed with sole pieces 4 to support the base flanges of the rails and lugs 5-8 to hold the rails in alignment with the runways 2, 3 of the crossing. The lugs 5, 6 and 7, 8 are spaced to engage the rail web and may be supported by transverse webs 19, 20.
Patent GB-1537026-A (GB)
Title: Instrument for drawing ellipses
IPC: B43L11/04
Filed: 1976-03-12
Abstract: 1537026 Ellipsograph R O'MALLEY 12 March 1976 [17 Dec 1974] 54511/74 Heading B6P  An ellipsograph comprises a non-rotatable part 1 carrying a mounting 11, in which socket member can be adjusted between spring 55 and nut 5, so that the angle of the axis of rotation of rotating arm 51 with the post is changed. The arm end 52 slides in sleeve 62, which moves as if it were in contact with the edge of an elliptical member as it, body 7 and arm 30, rotate about the post, the eccentricity of the ellipse depending on the inclination of the axis of rotation of the arm 51. As a result the end of the arm 30 performs an ellipse, with an eccentricity dependent on the inclination of the axis of rotation of the arm 51 and a size set by the position of guides 65 and pins 68 on the sleeve 62, as serby clamp 67.
Patent GB-1410814-A (GB)
Title: Means for securing the teeth of mechanical excavating implements
IPC: E02F/
Filed: 1972-11-27
Abstract: 1410814 Excavator tooth assembly; stud- and-socket fastenings A CABALLERO 27 Nov 1972 [27 Nov 1971] 54643/72 Headings E1F and E2B A tooth assembly for an excavator comprises a tooth 5 having. tang 4 with a blind recess 7 in a surface thereof, an element adapted to be mounted on an excavator implement and having a socket 3, for reception of the tang 4, with a recess 11 in a wall thereof, and a resilient member 8 locatable within a substantially closed chamber formed 'by the recesses 7, 11 when the tang is in the socket, thereby removably retaining the tooth. Bores 12, 12A in the element 1 communicate with the socket to allow insertion of a tool to aid removal of the tooth.
Patent GB-1401187-A (GB)
Title: Helicopter engine intakes
IPC: B64D33/02
Filed: 1971-11-25
Abstract: 1401187 Air intakes for helicopter engines DEFENCE SECRETARY OF STATE FOR 10 Nov 1972 [25 Nov 1971] 54813/71 Heading F1G [Also in Divisions B7 and F2] The fuselage 13 of a helicopter houses an engine 15 with a duct 14 leading to an air intake formed within an aerofoil 1 of thick-wing form attached to the fuselage. The aerofoil is divided into a front space 18 and rear space 19 and air inlet filtration tubes 4 are mounted flush in the upper aerofoil surface 3. Hollow cylindrical members 5, 6, are connected to tubes 4 by pipes (not shown) and external from root to tip adjacent the leading and trailing edges respectively and are fitted at their tip ends with scavenging fans 7, 8 which scavenge about 10% of the air-flow through tubes 4 and deliver it to outlets 9 and 10 respectively. In conditions in which the scavenging system fails to keep tubes 4 clear or when maximum power is required doors in the lower surface of the aerofoil may be opened. De-icing of the air intake may be achieved by providing heating pipes between the tubes 4.
Patent GB-1219096-A (GB)
Title: Improvements in and relating to brush holders, for example for traction motors
Inventor: HUGHES KELVIN GOLDEN
IPC: H01R39/38
Filed: 1967-12-04
Abstract: 1,219,096. Brush-holders for dynamo-electric machines. MORGAN COMPONENTS Ltd. 27 Jan., 1969 [4 Dec., 1967], No. 54982/67. Heading H2A. A brush-holder comprises a channel-section mount 10, Fig. 3, of which a side web or the side webs 14, 15 engage an insulated mounting 20, the side webs being stiffened against flexure, e.g. by plates 17, and one or more brush boxes, each box comprising nested channel section members 27, 28 secured together and to a plate 24 clamped to the base 16 of the mount. The channel section mount 10 and members 27, 28 and the plates 17 are made of sheet metal and the plate 24 is clamped to the base 16 by nuts and bolts 25 engaging slots 26 (Fig. 4, not shown) in the base, thus permitting lateral shifting of the brushes. In a modification, Figs. 5-7 (not shown), the brush boxes are mounted inside the mount and there may be an additional plate 24 spaced from the base of the mount for carrying additional brush boxes. The mounts carry a copper terminal bar 22 (41, Fig. 5).
Patent GB-1500515-A (GB)
Title: Building shells
IPC: E04H1/00
Filed: 1974-12-28
Abstract: 1500515 Building shells of modular sized elements P KARCHER 28 Dec 1974 [28 Dec 1973] 55103/74 Heading E1A A building shell solely comprises a multiplicity of wall elements each of which has a horizontal dimension equal to a modular dimension of 7M, 9M or 12M where M is a basic size and where elements of each of the modular dimensions are included in the shell. Particularly M=30cm.
Patent GB-1193088-A (GB)
Title: A Simple Disc-Recording and Transcription System.
IPC: G11B33/06
Filed: 1967-12-04
Abstract: 1,193,088. Disc recording and playback. TOMY KOGYO CO. Ltd. 4 Dec., 1967 [21 Sept., 1967], No. 55109/67. Heading G5B. A record blank 15 is held on a turntable 11 by a coaxial disc 16, which is detachably secured to the turntable spindle and has on its upper surface a guide groove 16a; a guide stylus 20 carried by a guide arm alongside the recording arm 14 engages this guide groove 16a to drive the recording stylus 21 across the record blank 15. The guide arm and the recording arm 14 are mounted on common pivots (17, 18, 19, Fig. 2) so that the two styli 20, 21 may make limited independent vertical movements, while the tracking forces (Fig. 6) tend to hold the two styli apart in a horizontal direction. A playback arm 13 opposes the direction of motion of the record 15 and its pick-up stylus 28 is therefore inclined towards the base of the arm.
Patent GB-1410986-A (GB)
Title: Preservation of aqueous acrylamide solutions
IPC: C07C231/22
Filed: 1972-12-05
Abstract: 1410986 Containers MITSUI TOATSU CHEMICALS Inc 5 Dec 1972 [6 Dec 1971] 56140/72 Heading B8C [Also in Divisions B1 and C2] Aqueous acrylamide solution manufactured by the copper-catalysed hydration of acrylonitrile is preserved by containing the solution, in the absence of added inhibitor, in a container made of or lined with material selected from phenolic resin, polyethylene, polypropylene, polyvinyl chloride and polytetrafluoroethylene. The copper catalyst used in the manufacture of the solution may be porous copper, reduced copper, reduced copper-chrome, ionic copper or a cuprous resin. Acrylamide may constitute from 20 to 70 or more weight per cent of the solution. The container may be in the form of a reservoir, piping or tubing; a specified container is a polyethylene bag, optionally arranged inside a drum; exemplified containers include iron containers lined or coated with a phenol resin or with polytetrafluoroethylene.
Patent GB-1164046-A (GB)
Title: Improvements in or relating to the production of Benzophenones
IPC: C07C49/82
Filed: 1967-12-13
Abstract: 1,164,046. Benzophenones. KOPPERS CO. Inc. 13 Dec., 1967 [16 Dec., 1966], No. 56736/67. Heading C2C. Compounds of the formula where R is OH or alkoxy, R 1 is H, OH or alkoxy and R 2 , R 3  and R 4  are H, alkyl, OH or alkoxy, wherein the alkyl and alkoxy groups contain 1-5 carbon atoms, provided (a) that at least one of R 1 , R2, R 3  and R 4  is OH or alkoxy, (b) that when R is OH R 1  is not alkoxy and (c) that when R is alkoxy at least one of R 1 , R 2 , R 3  and R 4  is hydroxy are prepared (a) by forming a solution of compounds of the formulµ where R 1  is ortho or meta to R and liquid anhydrous hydrogen fluoride, at least 10 moles of which are present per mole of hydroxy benzene (b) maintaining the solution at 20- 100‹ C. for sufficient time to allow condensation (c) removing the hydrogen fluoride, (d) contacting the product residue with water to form a slurry thereof and cause granulation of the product (e) removing the water (f) contacting the residue with additional water to form a second slurry, (g) adjusting the pH to 9-10 and forming an aqueous solution, (h) contacting the solution with sodium dithionite and heating for a time sufficient to reduce impurities therein, (i) adjusting the pH of the solution to 7À5-8À9 to precipitate the product and (j) separating the product therefrom. The water used to form the first slurry may contain a minor amount of acid. A chelating agent may be added to the second slurry.
Patent GB-1374270-A (GB)
Title: Polymaleic anhydride compositions and their use
IPC: C23F11/173
Filed: 1971-12-10
Abstract: 1374270 Treating water CIBA-GEIGY AG 7 Dec 1972 [10 Dec 1971] 57413/71 Heading C1C [Also in Division C7] A corrosion-inhibiting composition comprises 2À5 to 80 wt. per cent Zn<++> and 97À5 to 20% hydrolysed polymaleic anhydride. The composition is added to aqueous media in contact with metal such as steel, Cu, brass, or Al to inhibit corrosion and scaling; since polymerized maleic anhydride readily hydrolyses in aqueous media, the term "hydrolysed polymaleic anhydride" above includes both pre-hydrolysed polymaleic anhydride and also polymerized maleic anhydride hydrolysable on addition to water. The M.W. of the polymer may be 300- 5000; the source of Zn<++> may be the borate, chloride, nitrate or sulphate, and there may be added to the composition benzotriazole, bisbenzotriazole or their Cu-deactivating derivatives as Cu corrosion inhibitors, silicate to control attack on Al, or iron-corrosion inhibitors such as chromium, nitrite, or amines; 0À1-500 p.p.m. of composition are added to the aqueous system.
Patent GB-1449186-A (GB)
Title: Vortex air cleaner-acoustic attenuator assembly
IPC: F02M35/14
Filed: 1973-12-11
Abstract: 1449186 Vortex air cleaner PALL CORP 11 Dec 1973 [18 Dec 1972] 57422/73 Heading B2P [Also in Division Fl]  An air cleaner-acoustic attenuator assembly for connection to the air intake of a gas turbine engine comprises an array of vortex air cleaners 10 and an array of spaced soundabsorbing sheets 40, 40a, 40b defining passages 44 arranged to receive clean air from adjacent air cleaners and deflect such air at least once from the surface of the sheets. The air cleaners 10 are mounted between plates 12 and 13 of a housing 11 which is airtightly connected to the acoustic attenuator housing 16 through rubber seals 17 and bolts 18. Each air cleaner comprises a tube 23 made of asbestos or glass-filled polypropylene, a helical vortex generating member 29 made of filled polypropylene and resin-bonded in the inlet end of the tube and an outlet tube 27 for clean air which defines with the tube 23 an annular space 30 for the discharge of dirt particles into the interior of the housing 11 which is connected via a duct to a scavenging blower or injector. The sheets 40, 40a, 40b of the acoustic attenuator, in cross-section, may be dog-legged, as shown, curved (e.g. sinussoidal), zig-zag or straight (in this case they are set at an angle to the axis of the vortex air cleaners). The sheets may be made of, or surfaced with, sound-absorbing material. They may be of metal or plastics. As shown, each sheet is a sandwich of two metal plates 41, which may be perforated or in mesh form, with soundabsorbing material 43, e.g. non-woven glass fibre mat, therebetween. The sandwich may also be surfaced with sound-absorbing fabric and may be enclosed in a thin plastics membrane for moisture-proofness. The attenuator housing 16 is secured by rivets 64 to one side of the duct 5 at the air intake of the gas turbine engine. A similar cleaner-attenuator assembly is secured to the other side of the duct, Figs. 1 and 2 (not shown). In operation, clean air emerging from the outlet tubes 27 of the vortex air cleaners enters the passages 44 between the sheets 40, 40a, 40b, is deflected twice upon the dog-legs 44a, 44b and is guided by baffles 8, 8a in the duct 5 towards the engine intake. Sound pressure waves propagate from the engine intake and are deflected in turn by the baffles 8, 8a and upon the dog-legs 44b, 44a and pass through the air cleaners. Sound attenuation of the order of 10%, 70% and 20% is obtained by the baffles, dog-legs and cleaners respectively.