baber/WOPTO huggingface dataset:
Patent GB-1205579-A (GB)
Title: Method of manufacturing a semi-conductor arrangement
Inventor: AMGARTH DIETRICH
IPC: H01L27/00
Filed: 1967-12-28
Abstract: 1,205,579. Solid-circuits. ARBEITSSTELLE FUR MOLEKULARELEKTRONIK. 28 Dec., 1967, No. 58889/67. Heading H1K. One face of an N-type silicon wafer is recessed and coated with silica, in which holes are formed between the recesses. Heavily doped N-type silicon is grown over the silicon to make conductive contact with the wafer through the holes, and is then removed in areas remote from the holes. Superposed layers of silica and polycrystalline silicon are next formed over the recessed face which is then lapped to form a flat surface. The arrangement is then inverted and the underside of the original wafer lapped or etched down to the bottoms of the recesses to form mutually isolated N-type sections each with a surrounding N+ type collector contact zone 5 (Fig. 7). Impurity is diffused into the entire face of each section to form a planar collector junction therein. Simultaneously or subsequently an oxide layer 8 is formed over the faces and emitter zones and emitter, base and collector contacts provided using standard planar techniques. In an alternative method a thick silica layer is first formed on the recessed face and removed where the transistors are to be formed. A thin apertured silica layer is next provided on the silicon thus exposed and the heavily doped silicon deposited and selectively removed as before. After lapping the treated face flat superposed layers of silica and polycrystalline silicon are deposited on it. The arrangement is then inverted and lapped to form the isolated sections which are formed into transistors as described above.
Patent GB-1422040-A (GB)
Title: Process for preparing ketones
IPC: C07C49/807
Filed: 1973-12-20
Abstract: 1422040 Preparation of aromatic ketones BAYER AG 20 Dec 1973 [20 Dec 1972] 59190/73 Heading C2C Ketones of general Formula VI wherein R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> are independently hydrogen or an optionally substituted aliphatic, cycloaliphatic, araliphalic aromatic or heterocyclic group or a carbonylic acid ester group and R<SP>4</SP> represents CN, COR<SP>6</SP> or CO 2 R<SP>5</SP> in which R<SP>5</SP> denotes a group as defined for R<SP>1</SP> to R<SP>3</SP> other than hydrogen and R<SP>1</SP> and R<SP>2</SP>, R<SP>1</SP> and R<SP>3</SP>, R<SP>2</SP> and R<SP>5</SP> or R<SP>3</SP> and R<SP>5</SP> may together with the olefinic carbons form a carbocyclic or heterocyclic ring, are prepared by reacting a carbocyclic or heterocyclic aromatic aldehyde, in the presence of cyanide ions with an unsaturated compound of Formula I Compounds of Formulae VII and VIII wherein R<SP>11</SP> and R<SP>31</SP> are independently hydrogen, C 1-3  alkyl or optionally substituted phenyl, R<SP>61</SP> is an optionally substituted phenyl or pyridyl radical, R<SP>51</SP> is C 1-3  alkyl or phenyl and R<SP>611</SP> is an optionally substituted phenyl furyl or pyridyl radical are claimed per se.
Patent GB-1372858-A (GB)
Title: Radial tyre and method of manufacturing the same
IPC: B29D30/00
Filed: 1971-12-21
Abstract: 1372858 Pneumatic tyres BRIDGESTONE TIRE KK 21 Dec 1971 [29 Dec 1970] 59311/71 Heading B7C A pneumatic tyre comprises a carcass 2 of one or more plies of parallel cords disposed at 70-90 degrees to the tyre equator; sidewall rubber layers 3 having a Shore A hardness of 40-55 degrees; a breaker 6 consisting of one or more rubberized plies of parallel cords disposed at 10-30 degrees to the tyre equator; and a tread band 5 consisting of a central portion A, made of abrasion-resistant rubber having a Shore A hardness of 55-75 degrees, and edge portions B, bonded to the portion A and made of the same rubber as, and joined to, the layers 3. As shown in Fig. 8 the layers 3 may also be joined to the parts of the central portion A adjacent the edge portions B such that, at each side of the tyre, the boundary between the portion A and the respective portion B makes an acute angle X with the boundary between the respective layer 3 and the portion A. The cords of the carcass 2 may each comprise two twisted 840 denier yarns, and those of the breaker 6 may each comprise three twisted 1650 denier yarns. The tyre is made by constructing the carcass 2 in cylindrical form, securing the sidewall layers 3 to the carcass, shaping the carcass and sidewall layer assembly to toroidal form, securing the breaker 6 and tread band 5 to the shaped assembly by stitching, and finally vulcanizing. The tread band 5 may be made by extruding two rubber materials to form the central portion A and edge portions B simultaneously.
Patent GB-1313680-A (GB)
Title: Mixing and conveying apparatus
IPC: B29C48/03
Filed: 1970-12-16
Abstract: 1313680 Mixing apparatus SEMPERIT AG and DESMA-WERKE GmbH 16 Dec 1970 [17 Dec 1969] 59665/70 Heading B1C A screw mixer especially for a self-hardening synthetic resin has a screw 2, 3 cooperating with a chamber 4 both of which are at least partly conical, the screw and chamber being relatively axially adjustable to reduce the clearance between them for cleaning purposes. The screw may have a conical core as shown, or a cylindrical core with flattened threads (see Fig. 9, not shown) and may consist of removable and exchangeable sections of different pitches (see Figs. 10-14, not shown). Axial adjustment of the screw may be effected by mounting its bearings (6, Fig. 4, not shown) in an externally threaded housing (7) mechanically rotatable to effect adjustment. Alternatively, the housing of the mixing compartment may be externally threaded and carried in a rotatable sleeve. In another arrangement, Fig. 5, the mixing chamber part 13 is constrained by a key 17 and groove 18 so that it can move only in an axial direction, being adjustable by a ring 19 having pins 22 engaging in cam grooves 23 in the chamber portion, the ring being rotatable by a ram 25. The cam groove is shaped to provide a mixing position and a cleaning position, the crown making a slow approach to the cleaning position between mixing cycles and a rapid withdrawal, and the axial movement being reversed by limit switches at the ends of the groove. In another arrangement the rotational speed of the ring 19 is constant but the groove, Fig. 7, provides a section x with a slow approach section y, a cleaning section z, and a rapid withdrawal section y'.
Patent GB-1222012-A (GB)
Title: Gas liquid contact tray for gas cleaning apparatus
IPC: B01D3/18
Filed: 1968-12-16
Abstract: 1,222,012. Gas/liquid contact apparatus. AMERICAN AIR FILTER CO. Ltd. 16 Dec., 1968 [24 Jan., 1968], No. 59791/68. Heading B1R. [Also in Division F2] In a gas/liquid contact tray of the kind having a plurality of apertures each covered by a valve-disc arranged for movement away from and towards the tray in response to the pressure of upwardly flowing gas, the valvediscs are made from material cut-out of the tray when forming the apertures. As shown in 'Fig. 4 the valve-disc 16 has a series of tab-like projections 17. In use the projections 17 are turned out of register with the recesses 18. In a modification the tab-like projections are formed around the apertures and the recesses in the valve-discs.
Patent GB-597963-A (GB)
IPC: H01R27/00
Abstract: 597,963. Two-part couplings. STERN & MICHAELS, Ltd., and PERITZ, C. July 30, 1945, No. 19511. [Class 38 (i)] In a plug connector, each of the two conducting pins is mounted on a pivoted link movable by a sliding member to vary the spacing between the pins, so as to adapt the plug to sockets of different sizes. In Figs. 3, 5, the links 28 are pivoted to the plug body at 29 and carry at their opposite ends the connecting pins 19, which are engaged by forks 27 fixed to the sliding member 24 which is urged outwards by the spring 26 and guided by the rod 25. Pressure on the sliding member brings the pins together by movement along the arcuate slots 20 through which they pass. The earth pin 22 is hinged, and folds into the groove 21 when not required. In another construction, Fig. 2, each conducting pin 10 is fixed to one end of one of a pair of crossed slotted links 11 which are pivoted to the body of the plug at 15. A slidable member 14 loaded by a spring 17 carries a stud 13 which engages the intersection of the two slots 12. Inward movement of the member 14 separates the pins by motion along the arcuate slots 18 through which they pass.
Patent GB-1305041-A (GB)
IPC: C07D487/18
Filed: 1969-12-31
Abstract: 1305041 Hexamethylene tetramine TENNECO CHEMICALS Inc 31 Dec 1969 [31 Dec 1968] 63549/69 Heading C2C Uniform free-flowing spheres of hexamethylenetetramine are prepared by: (a) continuously introducing into a reaction zone gaseous ammonia and an aqueous solution containing 30- 5% (by weight) of formaldehyde and having a low cation content in a molar ratio of approximately 0À67 to 1; (b) heating the mixture to a temperature in the range 50-90‹ C. at a pH of 7À0 to 8À0 for 1-10 minutes; (c) continuously withdrawing the aqueous solution of hexamethylene tetramine from the reaction zone; (d) passing air heated to a temperature below the decomposition temperature of hexamethylenetetramine up through a confined zone containing finely-divided particles of hexamethylenetetramine at a flow rate sufficient to form a fluidized bed; (e) spraying into the fluidized bed the aqueous solution of hexamethylenetetramine obtained in step (c) in an amount such that the water in the solution is vaporized and the solid particles are coated with the solution; (f) injecting into the fluidized bed by means of air, particles of hexamethylenetetramine of a size smaller than the average size of the particles present in the bed, the particles being injected downwardly and transversely to the heated air flow in the bed; (g) continuously discharging a portion of the hexamethylenetetramine pellets from the bed; and (h) screening the discharged pellets to obtain a uniform free-flowing product.
Patent GB-2000009-A (GB)
Title: Control Systems for Hydraulic Power Lift Mechanisms of Agricultural Tractors
IPC: A01B63/10
Filed: 1978-06-22
Abstract: A hydraulic power lift system for agricultural tractors comprises a single-acting hydraulic ram for raising the linkage to which a ground-working implement or equivalent load is attached. The system includes a spool type control valve for maintaining the implement in a desired position and a lock valve which prevents leakage of fluid from the ram and so improves positional stability. In the absence of inlet pressure to the spool valve, a safety interlock valve interrupts the supply of fluid needed to open the lock valve. Preferably the supply to the lock valve is cut-off if the control calls for position other than "raise" or "neutral" when power is resumed after a disruption.
Patent GB-2000714-A (GB)
Title: Hand Plane
IPC: B27G17/02
Filed: 1978-07-05
Abstract: A hand plane has a replaceable blade 3 held between a lever cap 1 and a support plate 4 by a locking screw 5. A bolt 6 on the plane body 7 and which passes through the lever cap 1 allows swivelling of this cap. The lever cap 1 and blade 3 are adjustable to vary the cutting depth of the blade by means of a feed screw 9 going through the bolt 6. <IMAGE>
Patent GB-2001637-A (GB)
Title: Preparation of Tobias Acid
IPC: C07C303/08
Filed: 1978-07-24
Abstract: Tobias Acid is obtained by reacting separate streams of a solution of beta-naphthol in a water- immiscible solvent and chlorosulfonic acid at 0-5 DEG C. at a mole ratio of chlorosulfonic acid to beta- naphthol of about 0.85 to 1.15 for a time of 1-120 minutes and in a later stage after amination and extraction of the reaction mixture with a water-immiscible organic solvent, acidifying the extracted aqueous phase of alkali metal and ammonium salts of Tobias Acid at pH 1.8 to 2.5 at 20-80 DEG C. to form a slurry of Tobias Acid.
Patent GB-2003359-A (GB)
Title: Method and apparatus for back projection
IPC: G01N23/04
Filed: 1978-08-01
Abstract: A method and apparatus is described for back-projection when forming a tomographic image of a body. In the method, signal profiles are written upon the target of a storage tube as a raster scan, which raster is rotated synchronously with the X-ray source and detector. The apparatus for generating the rotating raster comprises potentiometers having a sinusoidal and a cosinusoidal resistance characteristic respectively, the positions of the tapping arms of the potentiometers being moved synchronously with the rotation of the source and detector, and means for deriving the values  X=H cos Q+V sin Q  Y=V cos Q-H sin Q (where Q represents the angle between source/detector line and a reference direction, and H, V are television deflection signals) which values represent storage tube addressing coordinates.
Patent GB-2005649-A (GB)
Title: Electrodes
IPC: C22C5/04
Filed: 1978-09-14
Abstract: Electrodes particularly for igniters use for igniting combustible mixtures in I.C. engines, gas turbines and jet engines, wherein the erosion resistance is improved and the risk of failure reduced by virtue of at least a part of the working surface of each electrode comprising one or more intermetallic compound of the general formula AxBy where A is Be, Al, Sc, Y, one of the lanthanides, Si, Ti, Zr, Hf, Th, V, Nb, or Ta and B is Ru, Rh, Pd, Ir or Pt and where x and y are integers >/=1 and preferably </=5.
Patent GB-783764-A (GB)
IPC: C08G59/68
Abstract: 783,764. Curing epoxide resins. CHEMISCHE WERKE ALBERT. April 30, 1956 [April 28, 1955], No. 13266/56. Class 2 (5). [Also in Group IV (b)] Epoxide resins having on the average more than one epoxide group per molecule are hardened by addition thereto of an organo-tin compound having the general formula where n is an integer, R 1  and R 2 , which may be the same or different, are monoacyl groups where n=1 or alternatively where n is greater than 1 are alkyl, aryl or alkaryl groups or residues of maleic acid and R 3  and R 4  are alkyl, aryl or aralkyl. R 1  and R 2  are preferably acyl groups containing 2-22 atoms. Examples of hardening agents are dibutyl tin diacetate and dibutyl tin dilaurate. The hardening agent may contain the recurring unit e.g. compounds such as dibutyl tin maleate obtained by reacting a dialkyl tin dichloride and maleic acid dibutyl tin di-ethylhexoxide polymer may also be used. The polymeric compounds may be produced by reacting a dialkyl, diaryl or diaralkyl tin halide in an anhydrous solvent with alkalimetal alkoxides or with alcohols in the presence of ammonia or tertiary amines. The hardening agent and the epoxide resin may be mixed by melting together or by solution in a mutual solvent, e.g. dichlorethylene, carbon tetrachloride, dichlorethylene ethers, monochlorbenzene. In examples: (1) 100 parts epoxide resin produced from bisphenol and epichlorhydrin are dissolved in ethylene glycol containing 1 part of dibutyl tin laurate. Films of high gloss and good chemical resistance are produced by stoving the solution on metal panels at 200‹ C.; (2) dibutyl tin maleate is used to cure the resin of (1); (3) the hardener was obtained by reacting a dispersion of metallic sodium with 2-ethylhexyl alcohol in toluene with dibutyl tin dichloride. Specification 729,258 is referred to.
Patent GB-2006563-A (GB)
Title: Pulse Lengthening Circuit
IPC: H03K5/00
Filed: 1978-10-16
Abstract: A circuit for generating an output signal which consists of pulses of a standard length corresponding to temporary and possibly very brief excursions of an input signal from a standard value, for example for processing the output from a television camera used to scan a printed wiring board and detect faults therein, comprises two bistable elements (47, 48) which are set by leading edges of excursions in a specific direction in an input signal applied to an input (41) and are reset by the leading and trailing edges respectively of a clock signal applied thereto from an input (42). The outputs of the bistable elements are added in a gate (51) to produce an extended signal when each excursion occurs and this is converted to a standard length in a clocked storage device, constructed in one embodiment as a single data flip-flop (49). The circuit may be constructed to respond to temporary input signal excursions in both senses. <IMAGE>
Patent GB-2009120-A (GB)
Title: Catalytic Oxidation of Ammonia
IPC: C01B21/26
Filed: 1978-10-20
Abstract: A process for the oxidation of ammonia in accordance with the invention comprises passing a gaseous mixture containing ammonia and either air or oxygen at elevated temperature through particles of catalyst, said mixture being passed at a flowrate such that said particles constitute a fluidised bed. Preferred catalysts comprise one or more platinum metals.
Patent GB-2036201-A (GB)
Title: Automatic safety clutch device for flexible drives
IPC: F16C1/06
Filed: 1978-12-05
Abstract: An automatic safety clutch device for flexible drive shaft comprises a polygonal end connector 2 on the end of the shaft which axially engages a complementary socket 11 in a driven member. Under overload conditions the connector is withdrawn axially from the socket as a result of the tendency of the flexible shaft 1 to coil up on itself under overload conditions, thus shortening the overall length of the drive. A nose 3 on the connector guides the connector back into the socket on release of the overload. A grass cutting attachment for chain saws incorporating such a safety clutch is described. <IMAGE>
Patent GB-2012620-A (GB)
Title: Method of filling a cavity
IPC: B05B7/14
Filed: 1979-01-19
Abstract: Method of filling a cavity wall with a particulate insulating material in which compressed air supplied to a Coanda nozzle 8 from an inlet 9 entrains the particulate material from a shredder and transports it along a pipe to the cavity wall. Provision may be made for spraying the particulate material with an adhesive from a nozzle 15 to reduce the tendency of the particulate material to settle in the cavity. <IMAGE>
Patent GB-2014389-A (GB)
Title: Clocked comparator
IPC: H03K5/08
Filed: 1979-01-24
Abstract: A sensitive high speed clocked comparator for use with low level differential logic circuits which utilizes an amplifier, a Gilbert Gain Cell, and load devices to amplify the difference between analog voltages being compared, and a high speed latch to increase the output voltage level of the Gain Cell up to the level of logic signals used in low level differential logic circuits. The circuit has two modes, a "follow" mode wherein the amplifier and Gilbert Gain Cell cause an unbalance in the currents through two load devices responsive to any difference in input voltage, and a "latch" mode wherein a latch causes the current unbalance to increase and to latch. The modes are sequentially selected by clocking.
Patent GB-2014236-A (GB)
Title: Diaphragm Pump
IPC: F02M37/04
Filed: 1979-01-30
Abstract: A diaphragm pump (1) comprises a hollow housing (2) formed of two housing portions (3, 4) with a resilient diaphragm (5) and a valve support member 13 clamped therebetween. The two housing portions (3, 4) are connected together by a folded annular ring (17). <IMAGE>
Patent GB-2046326-A (GB)
Title: Interlocking roofing tiles
IPC: E04D3/24
Filed: 1979-02-12
Abstract: A roofing tile comprising a rectangular sheet 1 of galvanised steel, sheet asbestos or plastics is provided along one edge with a fixing flange 3 lying in a plane substantially parallel to the plane of the sheet and above said plane, the flange also partially overlapping the said edge of the sheet so that the connection 4 between the flange and the edge of the sheet forms an undercut portion, the other edge of the sheet being provided with a downwardly extending flange 6 arranged at substantially the same inclination as the connecting portion between the fixing flange and the sheet, so that when the tiles are laid in conventional overlapping relation with the fixing flange of one tile nailed or otherwise secured to the battens of a roof and being overlapped by a second tile similarly secured the downwardly depending flange on a second tile interlocks into the undercut portion of the first tile to secure the said second tile against lifting in wind. The tiles may be corrugated and the lower edge of flange 6 may be scalloped at 7 to fit the corrugations. Adjacent tiles may be welded together or tiles may have a strip or coating of bitumen which is melted subsequent to assembly to form a seal. <IMAGE>
Patent GB-2016316-A (GB)
Title: Drilling tool for drilling holes in solid metal workpieces
IPC: B23B51/04
Filed: 1979-02-27
Abstract: In a drilling tool for drilling holes in solid metal, at least two cutting inserts 3, 13 are arranged exchangeably in recesses at the front of the drill shank. The polygonal cutting inserts each have a plurality of cutting edges of equal length, of which at least one is in contact with the workpiece in each case. In order to achieve equal wear of the cutting edges of both cutting inerts 3, 13, the latter are of different sizes, the outer cutting corners 3c and 13c the cutting inserts 3 and 13 respectively being at the same distance from the axis M of the drill 1. One cutting edge 3a of the larger cutting insert 3 is immediately adjacent or extends across the axis M of the drill 1. <IMAGE>
Patent GB-2018307-A (GB)
Title: A weft-inserting gripper for a continuous weft feed loom
IPC: D03D47/23
Filed: 1979-04-05
Abstract: A weft-inserting gripper for a flexible tape loom comprises a fixed claw 2 and a movable and/or resilient weft-engaging member 6 (13) which are arranged to receive and grip a weft thread between them. To ensure reliable gripping of the thread and avoid abrasion of the warp threads by the gripper, the member (6), (13) has a spoon- shaped front end 9 (14). The member may be either a lever mounted for rocking movement on the claw and spring-biased towards a position for gripping a weft thread between its front end and a plate 4 fixed to the claw 2 or a resilient lamina having its rear end secured to the claw while its front end is pressed towards the claw by a leaf spring. <IMAGE>
Patent GB-2020283-A (GB)
Title: Herbicidally active N-ethylcarbanilic acid (3-methoxycarbonyl-amino)- phenyl ester and its manufacture and use
IPC: C07C239/00
Filed: 1979-04-23
Abstract: A novel carbanilic acid derivative of the formula   <IMAGE>  and its manufacture. The novel compound has a herbicidal action, especially a selective herbicidal action in cotton, ground- nut and rice crops.
Patent GB-2019931-A (GB)
Title: Method of fixing a member to a base surface
IPC: F24S10/70
Filed: 1979-06-06
Abstract: A method of securing a member having an undersurface to a base is disclosed wherein the member e.g. 16 or 24 is formed from flexible synthetic rubber e.g. E.P.D.M. and provided with pairs of deflectable projections e.g. 21 on the underside thereof defining an inwardly diverging recess adapted to receive a deposit of cement or mastic located between the member and the base, which cement or mastic does not substantially bond to the synthetic rubber, whereby the member is secured to the base but can be removed by pulling therefrom so that the projections deflect to permit the cement or mastic to emerge from the inwardly diverging recesses. <IMAGE>
Patent GB-2048332-A (GB)
Title: A Handrail Assembly
IPC: E04F11/18
Filed: 1979-05-09
Abstract: A handrail assembly for attachment to a wall comprises a handrail member 2 having a cavity 9 with a slot 9a extending longitudinally and defined by opposed flanges 6,7 and a support member 1 including a clamping member 3 enterable within the cavity 9 and a bolt 4 to clamp on to the flanges 6, 7 of the handrail member 2. <IMAGE>