baber/WOPTO huggingface dataset:
Patent GB-1212366-A (GB)
Title: Improvements in doping semi-conductor bodies
IPC: C30B31/16
Filed: 1967-12-14
Abstract: 1,212,366. Diffusion into semi-conductors. ROBERT BOSCH G.m.b.H. 17 Dec., 1967 [17 Dec., 1966], No.56809/67. Heading H1K. In a diffusion process the dopant may be, for example, boron tribromide or phosphorous trichloride carried by an inert carrier gas, for example nitrogen-oxygen. The mixture of dopant and carrier gas is prepared by opening into one another a thermostatted dopant container and an enriching tank filled with the carrier gas and allowing the dopant vapour to equilibrium in the two vessels. The dopant container is then closed; the enriching tank blown with carrier gas, and the resultant stream from the tank led over a heated semi-conductor (silicon) body. If desired, the dopant may be further diluted by allowing the stream coming from the tank to merge with a separate stream of pure carrier gas. Surface concentrations of dopant as low as 10<SP>18</SP> atoms.cm.-3 may be obtained.
Patent GB-1404959-A (GB)
Title: Wound drainage device
IPC: A61M1/00
Filed: 1972-12-08
Abstract: 1404959 Wound drainage apparatus SHERWOOD MEDICAL INDUSTRIES INC 8 Dec 1972 [9 Dec 1971] 56841/72 Heading A5R A portable wound drainage device comprises a container 18 having a substantially rigid peripheral side wall and means defining a variable volume chamber 42 within the side wall including resiliently urged displacement means movable in response to an applied force thereon to reduce the volume of the chamber and movable in the opposite direction due to the resiliency thereof, inlet means for connecting the chamber with a body wound, and locking means for selectively holding the displacement means in a position wherein the volume of the chamber is reduced and for releasing the displacement means so that the resiliency thereof effects movement thereof from the said position to increase the volume of the chamber whereby fluid is drawn from the wound. The displacement means comprises a resilient diaphragm 22 urged away from the bottom wall 30 of the container and clamped in a peripheral groove by a rigid cover 26. A plate 24 rests on the diaphragm. A U- shaped handle 28 pivotable on cover 26 is movable in openings 55 in the cover and in its inoperative position engages in a recess in the cover. In use, the handle is pivoted to a position normal to cover 26 and depressed thereby depressing plate 24 and diaphragm 22 which are held in the depressed position by the engagement of ledges 70 on the handle under catches 62, (63) on the cover. The device is then strapped to a patient and a drainage tube from the wound connected to the inlet. The handle 28 is released from the catches 62 and fluid drawn into the chamber as the diaphragm moves away from the bottom wall. The container may have a drainage outlet and may be graduated.
Patent GB-1365348-A (GB)
Title: Vehicle seat
IPC: B60N2/90
Filed: 1971-12-16
Abstract: 1365348 Adjustable vehicle seats VAUXHALL MOTORS Ltd 7 Dec 1972 [16 Dec 1971] 58395/71 Heading A4J A vehicle seat with an adjustable contour has a plurality of seat and backrest squabs, 14, 16 and 18, 20 respectively, which are independently adjustable about a common axis A-A'. Each squab e.g. 14 is mounted on an associated subframe, e.g. 36, each sub-frame being pivotally mounted on a common support rod which forms the axis A-A' and being rotated about the axis by rotation of a double screw jack lifting device, e.g. 38, connected to the sub-frame by arms e.g. 56. In a second embodiment Fig. 5 (not shown) the axis A-A' is at the front of the seat. A parallelogram rod linkage may be used to move the sub-frame about the axis.
Patent GB-1171790-A (GB)
Title: Production of Powdered Metals of High Purity and Related Products.
Inventor: STEEN ANTOINE VAN DEN
IPC: C23C16/44
Filed: 1966-12-30
Abstract: 1,171,790. Producing metals; coating with metals. ETABS. KUHLMANN. Dec.30, 1966 [Dec.31, 1965], No.58410/66. Headings C7D and C7F. [Also in Division C1 Powdered metals and related products (i.e. intermetallic compounds, metal compounds having a m.pt. > 1600‹C., titanium dichloride, tin chlorides lower than Sn Cl 2 , and products in which individual particles comprise an outer layer of metal enclosing a core of an inert substrate) are obtained by (a) forming a mixture containing hydrogen and a halide of a metal of Group IV, Va, VIa or VIIa of the Mendeleteev Periodic Classification, or of iron, cobalt or nickel, (b) contacting the mixture in a reaction zone with a wall raised to a temperature higher than the reaction temperature of the mixture, and (c) separating the powdered metal or related product resulting from step (b) from the reaction by-products in a cooling zone adjacent to the reaction zone. The examples disclose the following reactions:- I NbCl 5  + H2 # Nb powder II NbCl 5  + H 2  containing N2 # Nb + Nb nitride III NbCl 5  + H2 # Nb containing 6‹74% Cl IV NbCl 5  + H 2  # Nb " 1À4% Cl V VCl 4  + H 2  V " 10% Cl VI VCl 3  + H 2  V " 28À7% Cl: this produce recycled to give V containing 0À55% Cl VII CrCl 3  + H 2  Cr containing 38À33% Cl: this product recycled to give Cr containing 6À64% Cl VIII UO 2  + NbCl 5  + H 2  # UO 2  coated with Nb IX WCl 6  + H 2 # W containing 19À56% Cl: this product recycled with propane as well as hydrogen to give WC containing 1À69% Cl X TiCl 4  + H 2  # TiCl 2 : this product recycled to give Ti containing 33À46% Cl XI SnCl 4  + H 2  #Sn containing 54À45% Cl XII Ni(II)Cl + H 2  #Ni containing 13À95% Cl: this product recycled to give Ni containing 4À68% Cl. References are also made (a) to the simultaneous reduction of mixtures of halides to give, for example, NbV, Nb 3 Sn, V 3  Ga and V 3  Si, (b) to the dilution of the hydrogen with Co, oxygen, steam or boranes to give metal powders containing e.g. oxides, carbides &c. and (c) to the elimination of Cl impurities in the metal powder products by heating under vacuum or in an inert or reducing atmosphere: the product may then be metal or metal hydride. The process may be effected in the apparatus shown in which reaction zone 6 is located inside tube 1 (the "wall") heated to e.g. 1600‹C. electrically. Halide 5 is located in vaporizer 4, entrained in hydrogen admitted at 3, and the mixture emerges from lower end 7a of injector 7. Product powder separates in cooling zone 11 and collects at 12. In a modification, filling cap 16 is replaced by a constant-output powder-feeding device if the halide is to be introduced into zone 6 in the form of powder or dust.
Patent GB-1236480-A (GB)
Title: Catalytic process for the production of polyesters
IPC: C08G63/85
Filed: 1968-12-10
Abstract: 1,236,480. Catalytic production of polyesters. SANDOZ Ltd. 10 Dec., 1968 [15 Dec., 19671, No. 58741/68. Heading C3R. In a process for making polyesters from one or more aromatic and/or aliphatic dicarboxylic acids, and aliphatic and/or cycloaliphatic and/or aromatic dihydric alcohols, there is used a catalyst comprising mixtures and/or an alloy or alloys of (a) Sb, (b) Sn and/or Pb, (c) Cd and/ or Mn. The catalyst preferably contains 10- 80% by weight, of (a), 10-80% by weight of (b) and 5-70% by weight of (c). In the examples, polyesters are made from (i) dimethyl telephthalate and ethyleneglycol, with or without dimethyl isophthalate or the bis-glycol ether of bis-phenol A and pentaerythritol or (ii) dimethyl terephthalate and 1,4 - bis - (hydroxymethyl)- cyclohexane.
Patent GB-1411573-A (GB)
Title: Devices for the dopollution of internal combustion-engine exhaust gas by using a catalytic reaction
IPC: F01N13/02
Filed: 1972-12-20
Abstract: 1411573 Treating exhaust gas REGIE NATIONALE DES USINES RENAULT and AUTOMOBILES PEUGEOT 20 Dec 1972 [28 Dec 1971] 58774/72 Heading B1W I.C. engine exhaust gas treating system consists of a reducing catalytic reactor and an oxidising catalytic reactor in series, each reactor being supplied at its upstream end with a variable amount of air and is characterised in that the air is provided by a pump capable of delivering an amount of air at least twice as great as that required for complete combustion of the carbon monoxide present in the exhaust gas of the engine, and the flow to each reactor is controlled by a common distributor means which in turn is controlled by thermostatic means responsive to the reactor temperatures, such that a conduit supplies to the exhaust manifold, at the outlet of each cylinder, an amount of air slightly less than that required for stoichiometric combustion of all the combustible substances in the exhaust gas .... and air is also supplied to a distributor having four outlets, two of said outlets being restricted and each supplying a respective reactor, an outlet for venting excess air to atmosphere and a high-output outlet connected to the inlet of the oxidising reactor. An engine 1 drives a pump 7 which supplies air to a gallery 8 which feeds air to nozzles 9 at the exhaust outlets of the cylinders. The exhaust manifold 2 is connected to a casing 3 which contains a reducing reactor 4 and an oxidising reactor 6 separated by a space 5. The temperature of the reactors is sensed by probes 23 and 24 respectively. The pump also supplies air to a distributor 11 having four outlets controlled by two spool valves 16 and 17 mounted on a common spindle 18, and biassed by springs 21 and 22 to the position shown on the Figure. When the engine is started from cold the reducing reactor 4 is operated as an oxidising reactor in order to quickly heat it to the temperature at which it begins to function as a reducing reactor. To achieve this, air from the restricted outlet 12 is fed into the upstream end of the reactor, excess air being exhausted through the vent 14. When the reactor reaches its working temperature, the probe 23 produces a signal which causes the relay 25 to operate, which energises the solenoid 19 and moves the spindle 18, against the spring 21 to the position 16 1  and 17 1 . The supply of air to the reactor 4 ceases and air is supplied to the space 5 from the restricted outlet 13, the excess air vent 14 remaining open. If the reactor 6 exceeds its safe working temperature, the probe 24, through relay 26 energises the solenoid 20 and pulls the spindle 18 to the position 16 2  and 17 2 , which opens the high output outlet 15 and closes the vent 14. The flow of air is then sufficient to cool the reactor 6.
Patent GB-1255796-A (GB)
Title: Dual valve for pneumatic tyres
IPC: B60C29/00
Filed: 1968-12-11
Abstract: 1,255,796. Valves. NATIONAL DISTILLERS & CHEMICAL CORP. 11 Dec., 1968 [20 Dec., 1967], No. 68981/68. Heading F2V. A valve, which is adapted for selectively filling either the interior 12 of an inner tube 10 or the space 13 between the inner tube and a tyre. 11 surrounding the. tube, comprises a main body portion 14 which is secured as at 16 and 54 to the inner tube and tyre rim respectively, and which has movable therein a hollow stem 30, the arrangement being such, that with the stem in the full-line position shown, air supplied to the stem channel 31 passes from the channel, through bores 32 and 19 in the stem and body, respectively, andintothe space 13, whilst when the stem is in its lowermost position, as indicated in dotted lines, bore 19 is obturated and air from channel 31 passes into the. space 12. Axial movement of the stem beyond its two alternative air-supplying positions is restricted by a locking pin 44. which co-operates with a stem flat 41, or alternatively (Figs. 3 to 7, not shown), by means of a circlip secured to the body and co-operating with a groove in the stem, or further by a key and slot arrangement which, in addition to restricting such axial movement; serves to lock the stem in either of its two positions.
Patent GB-1286898-A (GB)
Title: Automatic shift multispeed gear hub with a normal speed and two high speeds
IPC: F16H3/44
Filed: 1970-12-14
Abstract: 1286898 Variable speed gears FICHTEL & SACHS AG 14 Dec 1970 [15 Dec 1969] 59314/70 Heading F2D A gear hub (e.g. for a cycle) having n ratios (n being at least three) comprises a hub shell 11, a driven member 7 (e.g. a chain sprocket), (n - 1) centrifugal shift devices 16, 17, at least n clutch devices (e.g. ratchet clutches 10, 12, 14) connected to (n - 1) epicyclic gear trains having between them a common carrier 6 for planet pinions 3, 22, 24, at least one sun gear 2, 23, 25 and (n - 1) annuli 8, 9 of different diameters. The centrifugal shift devices may comprise flyweights 16, 17 each with a tang 18 to disengage pawls of the clutches 12, 14 from ratchet teeth 13, 15, 19, 21.
Patent GB-598446-A (GB)
Abstract: 598,446. Ticket - issuing machines. CLAYTON DEWANDRE CO., Ltd., and BOWMAN, A. Sept. 4, 1945, No. 22730. [Class 106 (iii)] Stage printing mechanism for a strip ticketissuing machine of the portable type comprises a rotationally adjustable hand operated device 1 capable of occupying two positions only and carrying printing dies 9, 10 adapted to cooperate with a fixed printing element for printing on each ticket issued an indication of whether the journey is an outward or inward one. Specification 397,889 is referred to.
Patent GB-1370680-A (GB)
Title: Method of and device for transverse wedge rolling of rotary parts
IPC: B21H1/18
Filed: 1971-12-23
Abstract: 1370680 Transverse rolling VYZKUMNY USTAV TVARECICH STROJU A TECHNOLOGIE TVARENI 23 Dec 1971 [29 Dec 1970] 59874/71 Heading B3M A cylindrical workpiece is rolled in two stages between three rolls 1, 2 and 3 provided with transverse wedge rolling tools on their surfaces, each roll having two sections 1a, 1b &c., mounted on a common shaft 4. The rolling tools may be separate tools carried on the rolls, or they may be formed integrally with the roll surface. In one embodiment (Figs. 1 and 3), three rolls define a central pass for a workpiece 5. The sections 1a, 2a and 3a of the rolls are freely rotatable on the shafts 4, whereas the sections 1b, 2b and 3b are keyed to the shafts. Initially, the portion of the workpiece between the sections 1a, 2a and 3a is rolled by rotation of these sections (Fig. 5b), while the other sections are maintained stationary. Then the other sections 1b, 2b and 3b are rotated to roll the remainder of the workpiece (Fig. 5c), a knife blade 11 separating the finished workpiece from a length of stock. In alternative forms, both sections of each roll may have a knife-blade (Fig. 7, not shown). In this case the sections b of the rolls may, in the Fig. 7 embodiment, roll the product before the section a. Each roll may have three sections, (Fig. 8, not shown), the outer sections being freely rotatable on the shaft, and the central section keyed to it. The outer sections may be connected by a torsion bar passing through a central bore in the shaft.
Patent GB-1413437-A (GB)
Title: Semiconductor laser device
IPC: H01S5/026
Filed: 1973-12-31
Abstract: 1413437 Light guides NIPPON SELFOC CO Ltd 31 Dec 1973 [29 Dec 1972 18 Jan 1973]  60237/73 Heading G2J [Also in Division H1] In a semi-conductor laser device in which the laser active region of the semi-conductor is disposed with a converging lens between two resonator reflectors to minimize tranverse modes, the lens consists of a transparent body the refractive index of which decreases as a function of distance from the optical axis of the device. As shown in Fig. 2a the laser active region is a p-Ga As layer in a GaAlAs-GaAs double heterostructure semi-conductor 11 formed on a GaAs substrate 111, electrical and heat-dissipating contact to a stripe electrode 112 and a substrate electrode being made through conductive cylindrical body pieces 131, 132, Fig. 2b. The converging lens is formed by a focusing light transmission body 121 consisting of a glass cylinder in which a transverse, cylindrically graded refractive index is imparted by an ion exchange process. This body, together with an abutting glass body spacer 123, secured to the cylindrical body pieces by epoxy resin 122. The resonator reflectors are formed by planar reflective films 126, 127 on the outer surfaces of the semi-conductor and the glass spacer, respectively. In a modification Fig. 4 (not shown), an additional glass body spacer may be provided between the semi-conductor and the focusing light transmission body. In an alternative form of Fig. 1, the stripe electrode is replaced by an electrode 112', Fig. 3, extending wholly over a semi-conductor surface, and the width of the active region of the semi-conductor is effectively restricted by the provision of a stripe resonator reflector formed by a reflective film 127'. An alternative construction, Fig. 5, omits the glass body spacer, and the focusing light transmission body 12' is formed with a transverse parabolically-graded refractive index in one direction only. Additionally the body 12' is shaped at its outer end to support a cylindrical reflecting film, the axes of the refractive index grading and the cylindrical reflecting film being orthogonal. In a modification, Fig. 7 (not shown), the outer end of the body 12' is spherical. A further arrangement, Fig. 8, uses two focusing light transmission bodies 12A, 12B, the graded refractive index of the inner body being such as to provide the equivalent of a cylindrical lens of short focal length, while the outer body has a graded refractive index providing a spherical lens of longer focal length. A single focusing light transmission body with planar end surfaces 127 normal to the optical axis is used in Fig. 9, the refractive index being so graded that the equivalent radius of curvature is less in the plane of the laser active region than in the thickness direction of the region.
Patent GB-1217427-A (GB)
Title: Cinchona alkaloid derivatives
IPC: C07D453/04
Filed: 1968-12-19
Abstract: 1,217,427. Cinchona alkaloid derivatives. AMERICAN HOME PRODUCTS CORP. 19 Dec., 1968 [21 Dec., 1967], No. 60317/68. Heading C2C. Novel compounds of Formulµ I and II and their acid addition salts in which Q is a radical R 1  is H or methoxy; R<SP>2</SP> is C 1-6  alkyl, C 2-6  alkenyl, C 2-6  alkynyl, di-C 1-0  alkyl-N-(CH 2 ) n - in which n is 3-10, C 3-6  cycloalkyl, C 1-0  haloalkyl, C 2-6  haloalkenyl, aryl or aryl substituted by 1-5 halo, C 1-6  alkyl, C 2-6  alkenyl, C 2-6  alkynyl, C 1-6  haloalkyl, C 1-6  alkoxy, or C 2-6  haloalkenyl; and R 3  is ethyl or vinyl, provided that when R<SP>1</SP> is methoxy in Formula I R<SP>2</SP> is not aryl are prepared by reacting the N-oxides of formulµ with R<SP>2</SP>MgX or R<SP>2</SP>Li where X is halo and decomposing the organic complex formed, followed where necessary by salt formation. Pharmaceutical compositions comprise the compounds I or II together with suitable excipients for oral or parenteral application as anti-malarials and anti-arrhythmic agents.
Patent GB-1330698-A (GB)
Title: Apparatus for coating a tube of fibre material with viscose by estrusion
IPC: B29C48/05
Filed: 1970-12-23
Abstract: 1330698 Coating tubes KALLE AG 23 Dec 1970 [27 Dec 1969] 61100/70 Heading DIL [Also in Division B2]  Apparatus for coating a tube of fibre material with viscose comprises an annular slot die 1 and a bailing element 6 spaced therefrom to form a cylindrical passage having a width of 0.3 to 1.0 mm through which the tube can be passed, the slot in the die being directed transversely to the passage and having its exit at least 2mm. from the tube entry end of the passage and having its exit at least three times the width of the passage or at least 2mm. from the tube exit end of the passage. In a modification the relative positions of the die 1 and the boiling element 6 are reversed so that a tube can be coated internally. Several examples are given.
Patent GB-1278780-A (GB)
Title: Photodimerisation and photopolymerisation of bis-maleimides
Inventor: SMETS GEORGES JOSEPH
IPC: G03F7/027
Filed: 1968-12-24
Abstract: 1278780 Photopolymerization of bis-maleimides AGFA-GEVAERT 31 Oct 1969 [24 Dec 1968] 61434/68 Heading C3P [Also in Divi- C2 and G2] A process for the photocyclomerization of bismaleimides comprises exposing to radiation in the range of 3000 to 4000  a bis-maleimide of the general formula wherein R is an alkylene group of 2 to 12 carbon atoms, an arylene group or a -CH 2 -Z-CH 2 - group in which Z is O, S or NH, and X and Y are the same or different and are H or Cl atoms or CH 3  groups. Suitably the bis-maleimide is dissolved in an organic solvent such as acetonitrile or dioxan, to which solution is added a sensitizing agent such as benzophenone or Michler's ketone. Examples describe the photocyclomerization of a mixture of a copolymer of styrene and butadiene with hexamethylene bis-maleimide, and the preparation of cyclopolymers having recurring units of the following formulae in which the degree of polymerization is 12, 10 and 14 respectively.
Patent GB-1240416-A (GB)
Title: Microwave circuit with coaxial package semiconductor device
IPC: H01P3/08
Filed: 1969-12-17
Abstract: 1,240,416. Microwave assemblies. RCA CORPORATION. 17 Dec., 1969 [24 Dec., 1968], No. 61457/69. Headings H1K and H1R. A microwave electronic circuit comprises a metal plate 2 having microwave transmission lines consisting of thin metal sheets 8, 14 and dielectric sheets 6, 12 laminated together and secured to opposed surfaces 2, 10 of the metal plate, means in said plate for mounting a coaxial package device, e.g. transistor therein, said means comprising connected coaxial apertures 30 and 28 with the latter containing a cylindrical ceramic washer 32 having both good dielectric and heat-conducting properties and a central opening to receive the transistor 16, said transmission lines positioned to make contact with the terminals 18, 26 at either end of said device. The ceramic washer may be made of materials such as beryllium oxide or boron nitride.
Patent GB-685211-A (GB)
Abstract: 685,211. Crop-dusters. FARBENFABRIKEN BAYER. Sept. 15, 1949 [Sept. 15, 1948]. No. 23845/49. Class 6 (i). [Also in Group XXIX]. A blower comprising two impellers 4 driven from the wheels 1 of a vehicle through gears 2, has a nozzle 8 which produces a downwardly directed air jet for agitating plant leaves, and one or more nozzles 12 in or adjacent the air nozzle are provided for discharging a pesticide upon the said leaves. The air is directed to the nozzle 8 through ducts 5, baffles 6 and a distributer tube 7. The nozzles 12 are fed with liquid or powder from a tank 13. The end portions 9 may be slidable on the tube 7 and may pivot about hinges 10 to a stowing position.
Patent GB-723311-A (GB)
Abstract: 723,311. Calculating-apparatus. RIZZIERI, I. Jan. 12, 1951 [Jan. 14, 1950], No. 980/51. Class 106 (1). The differential racks 4 drive the totalizer pinions 2 throughout their reciprocating movements, upper rack teeth 1 engaging the pinions during the forward stroke and lower rack teeth 11 during the return, and the stroke of each rack is controlled by differential adjustment of the fulcrum of its respective actuating lever 6. In the mechanism shown, the fulcrum is the tip of a lever 6<1> which is rocked under key control to engage a selected notch in the lever 6. A constant stroke is given to the lower end 7 of the lever 6 by means of a connecting-rod 8 having an aperture 11 in which a crank 9 on the machine shaft 10 engages, so that the upper end of the lever 6 and hence the rack 4 are given a differential to and fro movement dependent upon the notch engaged by the lever 6 as determined by the key setting. Transverse movement of the rack 4 to disengage the rack-teeth 1 and engage the rack teeth 1<1> and vice versa, is effected by means of a cam 12 on the machine shaft 10. This action by the cam 12 occurs whilst the crank-pin 9 engages dwells 11<1> of the aperture 11 and the rack 4 is stationary at either limit of its stroke.