baber/WOPTO huggingface dataset:
Patent GB-1241555-A (GB)
Title: Avalanche diode oscillators
Inventor: GIBLIN ROGER ARTHUR
IPC: H01L29/868
Filed: 1967-11-28
Abstract: 1,241,555. Semi-conductor devices. NATIONAL RESEARCH DEVELOPMENT CORP. 27 Nov., 1968 [28 Nov., 1967], No. 54012/67. Heading H1K. [Also in Division H3] An avalanche diode oscillator has the diode junction formed by ion implantation, the implanted layer having discrete regions 2 of deeper ion implantation extending into the active region so that the avalanche breakdown is confined to those regions to produce high current density. The avalanche diode is designed to operate at high current densities. The diodes are specially constructed to prevent overheating even for pulsed operation. A P + N N + diode may have an ion implanted P + layer 1 with discrete regions 2 of deeper ion implantation produced by concentrating the ion implantation beam at these regions and increasing the energy of the beam. The active region of the diode is an epitaxial N-type layer 3. The diode has metallic contacts 5, 6 alloyed to the P+ layer 1 and an N+ substrate 4. When a reverse voltage is applied to the P + N junction and when avalanche breakdown occurs the electric field is concentrated between the regions 2 and the substrate 4. The material between the regions 2 acts as a heat sink.
Patent GB-1254275-A (GB)
Title: Loose covers for furniture
Inventor: GRUMBLEY JOHN
IPC: A47C31/11
Filed: 1967-11-29
Abstract: 1,254,275. Loose covers for furniture. C. KERFOOT and A. SHALOM [trading as PORTLAND CO.]. Nov. 25, 1968 [Nov. 29, 1967], No.54229/67. Heading A4M. A reversible cover for a chair, seat, cushion or the like comprises panels 10, 12 directly joined together at their adjacent edges 16, 18 such that the extremities of all the edges are concealed in both reversed conditions of the cover. In one embodiment, Fig. 3d, the edges are stitched together, at 20 and covered by piping 14 stitched, at 22, to the edges. In another embodiment, Fig. 4d, the edges are first stitched together, at 20, and the panels 10, 12 are then folded over and further stitched at 24 to enclose the first stitching 20. Alternatively, when using plastics panels and/ or piping the stitching is replaced by welding.
Patent GB-1163900-A (GB)
Title: Improvements relating to Flame Cultivation
Inventor: FURMAN GEORGE THOMAS
IPC: A01M15/00
Filed: 1965-12-29
Abstract: 1,163,900. Agricultural implements. URQUHART'S (1926) Ltd. 22 Dec., 1966 [29 Dec., 1965], No. 55131/65. Heading A1E. [Also in Divisions F1 and F4] A device for flame cultivation of plants carried by a tractor is operated by the pressure of the exhaust gases of the tractor. A throttling valve 8 is provided in the exhaust pipe 16 of a tractor engine 12 and the exhaust gases are supplied through a pipe 15 to pressurize a tank 6. The exhaust gases are fed to a gas tube 1 by a pipe 13 and the pressurized liquid is fed to the liquid tube 2 through a valve 9 and pipe 17. The tubes 1, 2 are secured together to form a boom which carries a number of burner units each comprising a two fluid atomiser surrounded by a flamestabilization shroud 4.
Patent GB-1146226-A (GB)
Title: Apparatus for feeding sheets containing data in the form of light-transmitting areas
IPC: G06K13/073
Filed: 1967-12-05
Abstract: 1,146,226. Feeding and delivering sheets. NATIONAL CASH REGISTER. CO. 5 Dec., 1967 [19 Dec., 1966],.No. 55210/67. Headings B6B and B6H. Sheets containing data in the form of lighttransmitting areas are fed in succession from .the bottom of a stack 80, -Fig. 3, by picker blades spaced equally along a belt 36, the belt being light-transmitting in at least those areas corresponding to the possible said areas in the sheets, and the belt being driven so as to be accelerated to a maximum velocity, and decelerated back to zero velocity at the time a sheet is positioned at a reading station, adjacent which a light source is provided which is energized when the belt is stationary, the light passing through light-transmitting areas of the belt and a sheet at the reading station to lightresponsive data reading means. The belt may be transparent, or of stainless steel perforated in the required areas. The lowest sheet is forced against the belt by suction applied through side driving perforations in the belt or through the light-transmitting perforations. The hopper 22 may be replaced by a two-stage hopper wherein cards are fed from a storage hopper to the feed hopper, in which the level of the cards is kept constant by level-sensing means. The belt is driven by sprockets 72 coupled to a shaft 76, Fig. 9, and passes over stationary cylinders 54 and under a tensioning weight 108. The shaft 76 is driven by a D.C., printed circuit armature, permanent magnet motor, and each sheet is registered in reading position by abutments 188 engaging a pawl 190 released between each sheet feed by a solenoid 196. In the event of a sheet jam, the motor fails to reach a certain speed at a certain time, and if this is the case, the motor is stopped. Delivering sheets.-Sheets, after being scanned in one operation by the computer-controlled flashing of a light-source 136 at the reading station 24, pass between deflector fingers 82 and a deflector plate 84, between a roller 86 and discs 88 rotated by an electric motor, the pressure of the discs being adjustable by a pressure bridge 102, and thence past a deflector 90 and card guide 92, downwardly into a hopper 30 to form a stack on a plate 94, which descends as the stack grows to compress a spring 100.
Patent GB-1368175-A (GB)
Title: Closure arrangement for a plastics material container
IPC: B65D8/08
Filed: 1972-12-01
Abstract: 1368175 Container closures; plastics containers MAUSER KG 1 Dec 1972 [27 May 1972] 55515/72 Headings B8T and B8D A plastics container has a prefabricated plastics intermediate ring 1 with flange 2 welded into the container mesh 3. The ring 1 has a lower internal flange 6 with recesses and an upper internal flange 4, both of which are used for correctly positioning the ring on a mandrel during the canister moulding operation. The flange 4 also forms a seal tight abutment for a plastics socket 5 which is forced into the intermediate ring after moulding. The socket 5 has an outer flange 7 which aligns and abuts with the container mesh on the top surface of the intermediate ring upper flange 4, 2. The socket 5 has an external screw thread 8 and a screw cap 11. The container is designed for stacking.
Patent GB-1485059-A (GB)
Title: Methods of making electric motors
IPC: H02K15/12
Filed: 1974-12-23
Abstract: 1485059 Moulding material for an electric motor SONY CORP 23 Dec 1974 [27 Dec 1973] 55580/74 Heading B5A [Also in Division B3] In a method of making an electric motor a body formed from a mixture of a thermosetting resin and a thermoplastic resin is moulded around the assembled polepiece core 16 and ring core 9. The cores 16, 9 are formed from laminations simultaneously stamped from sheet silicon steel. The resin mixture may be comprised of, e.g. unsaturated polyester resin (monomers) 80% by wt. and polystyrene or acrylic resin (polymer) 20% by wt. and is injected into a mould to form a casing 2 and to encapsulate the windings on the core 16. Filling materials are added to the resins such as calcium carbonate or aluminium oxide and fibres. A portion 15 of the core 16 is machined away to open the core slots and a rotor 3 is inserted into the stator so formed. Finally an end cover is moulded similarly and secured in an opening 20 of the stator body.
Patent GB-1306584-A (GB)
Title: System for reproducing motion pictures
IPC: H04N5/225
Filed: 1970-11-23
Abstract: 1306584 Television K VOCKENHUBER and R HAUSER 23 Nov 1970 [21 Nov 1969] 55615/70 Heading H4F  A system for reproducing motion pictures comprises a film projector 2 mounted on a magnetically shielded television camera 1 having a vidicon tube 3, amplifier 4 and horizontal  deflection stages 5. The projector and camera may be used separately, a conventional lens then being screw or bayonet-fitted to the camera. When used together the projector and  camera each has a tube 15, 16 mounted on it  and these are joined by two tubes 7, 10, the tube 10 being slidable within the tube 7. The tube 7 contains a lens 8 and aperture stop 9. The image from the projector is reflected from a mirror 11 in the tube 10 through the lens 8 and stop 9 and reflected in a pentagonal prism 17 to the camera tube 3. If a mirror is used instead of the prism 17 a laterally inverted image will be formed on the camera-tube, and to correct for this the polarity of the horizontal deflecting stage can be reversed. This may be accomplished by a switch 19 operated by the base of the projector which is located by recesses 21, 22 in the top of the camera, or a switch may be provided operated by the application of tube 16. The mirror 11 may be semi-reflecting, a photoconductor 23 being mounted on the mirror to produce an output to an amplifier and phase comparator for synchronizing the camera scanning frequency with the brightdark frequency of the projector. The lens 8 may be a zoom lens, the mirror 11 and lens 17 may be adjustable and the stop 9 may be adjustable. Grey filters may be included in the system as may a pair of relatively rotatable polarizing filters, and the signal from the camera 1 may be used to operate a monitor 6 or may be broadcast. The sound connection from the projector to the camera is provided at 29.
Patent GB-1342380-A (GB)
Title: Basic mono- and dis-azo dyestuffs
IPC: C09B44/04
Filed: 1971-12-03
Abstract: 1342380 N-Substituted aniline derivatives BAYER AG 3 Dec 1971 [5 Dec 1970] 56265/71 Heading C2C [Also in Divisions C4-C5] The preparation of compounds of formula wherein R is an alkylene group, R 1  is H, alkyl or alkenyl or a radical of formula wherein R 5  is H, alkenyl or alkynyl or a -C n H 2n Z radical, R 2  is an alkenyl or alkynyl radical, R 4  is H, NH 2 , alkylNH or (alkyl) 2 N or a -C n1 H 2n1 -Z 1  in which Z 1  is H, halogen, ON, OH, alkoxy, alkoxycarbonyl or alkylcarbonyloxy and n 1  is 1-6, R 3  is H, an alkenyl or alkynyl radical or a -C n H 2n -Z or radical in which the following radicals are defined as above D 1 -D, R 6 -R, R 7 -R 1 , R 8 -R 2  and R 9 -R 4 , Z is H, halogen, CN, OH, alkoxy alkylO.CO or alkylCO.O, Y is a -C p H 2p -, radical, n has the same meaning as n 1 , m is 0 or 1, p is 2-6, R 1  and R 3  or R 3  and R 4  together may form the remainder of a heterocyclic ring and An is an anion, is described. In examples: (1) N,N - dimethyl - N - (2 - chloroethyl)- amine hydrochloride and N-ethyl-aniline are condensed to yield N-ethyl-N-(2-dimethylaminoethyl)-aniline which is further reacted with allyl chloride in water to yield an aqueous solution of N- (2 - N<SP>1</SP> - ethyl - N<SP>1</SP> - phenyl - aminoethyl) - N,N - dimethyl - N - allyl - ammonium chloride and alternative methods are described; (6) N- (2 - N<SP>1</SP> - ethyl - N<SP>1</SP> - phenyl - aminoethyl) - N - methyl - N - allyl - hydrazinium chloride is prepared by condensing N-(2-N<SP>1</SP>- ethyl - N<SP>1</SP> - phenyl - aminoethyl) - N - methyl- N - allylamine with chloramine; (b) condensing N - ethyl - N - (2 - chloroethyl) - aniline with N - methyl - N - allyl - hydrazine and (c) condensing N - (2 - N<SP>1</SP> - ethyl - N<SP>1</SP> - phenylaminoethyl)-N-methyl-hydrazine with allyl bromide.
Patent GB-1274858-A (GB)
Title: Improvements in the manufacture of polyesters
Inventor: JEURISSEN LAMBERT GASTON
IPC: C08G63/00
Filed: 1968-11-29
Abstract: 1,274,858. Catalytic process for making polyesters. AGFA-GEVAERT. 25 Sept., 1969 [29 Nov., 1968], No. 56896/68. Heading C3R. Polyesters of a dicarboxylic acid and a glycol are prepared by the polycondensation of glycol dicarboxylates in the presence of a germanate, as catalyst, containing an ionic ratio of 0À4 to 0À6 of an alkali metal or ammonium, or of 0À2 to 0À3 3 of an alkaline earth metal with respect to the germanium present. The glycol dicarboxylate is preferably prepared by trans-esterification of a dialkyl ester of a dicarboxylic acid with a glycol using as catalysts compounds of alkali metals, Pr, Sm, Ce, La, or salts of Zn, Cd or Mn. The condensation catalyst may be added before or after the transesterification.
Patent GB-1176338-A (GB)
Title: Process for the Production of Spun Filaments of Uniform Thickness
Inventor: WURSTLIN DIETER
IPC: D01D1/09
Filed: 1966-12-22
Abstract: 1,176,338. Spun filaments of uniform thickness. FARBENFABRIKEN BAYER A.G. 22 Dec., 1966 [29 Dec., 1965], No. 57345/66. Heading B5B. Spun filaments are produced by a process in which the rate of flow of solution to a spinneret comprising a plurality of nozzles is automatically controlled in dependence on the number of nozzles in operation, by a pressure-sensitive rate-control means responsive to changes in pressure upstream of the spinneret, the ratecontrol means being preset to provide an appropriate rate of flow for any number of nozzles in operation and thereby a substantially constant pressure upstream of the spinneret. The rate-control means may be a contact manometer. Natural or synthetic latex may be so spun.
Patent GB-1261711-A (GB)
Title: Process for producing a penicillin acylose composition
Inventor: DELIN PER STAFFAN
IPC: C12N11/10
Filed: 1968-12-03
Abstract: 1,261,711. Penicillin acylase. ASTRA A.B. 5 March, 1969 [15 Feb., 1968; 3 Dec., 1968], Nos. 7544/68 and 57373/68. Heading C3H. [Also in Division C2]  A cell-free penicillin acylase composition is prepared by centrifuging cells of a penicillin acylase-producing strain of Escherichia coli at 0‹ to 50‹ C. in a self-cleaning centrifugal separator under conditions which apply to the cells a centrifugal pressure of 500 to 2000 p.s.i. and intermittently expelling the cells through an orifice to effect sudden decompression on the cells and thereby release the intracellular penicillin acylase therefrom, then extracting the released acylase into an aqueous medium at 10‹ to 50‹ C. for 0À1 to 0À5 hour and separating the aqueous extract from the cell debris. The E. coli is preferably cultivated in a medium containing phenyl-acetic acid and corn-steep liquor, the culture being saturated with butyl, isobutyl or amyl acetate before the centrifugation treatment, to kill the cells. The expulsion orifice is preferably a slit of width 0À1 to 1À5 mm. The preferred extracting medium is water containing 1-5% by volume of water-immiscible solvent, e.g. methyl isobutyl ketone, butyl, isobutyl or amyl acetate, benzene, toluene or chloroform, and an inorganic or organic base to bring the pH to 6À5 to 9À0. The cell debris is filtered or centrifuged off, after which the extract may be purified by precipitating impurities with acids or alkalies, treatment with ionexchangers, precipitation as a tannin complex which may either be dried or redissolved (e.g. in organic solvent or water at pH 7-9) and the solution freed from tannin with an ionexchanger, dialysis, ultra-filtration, deproteinization with carboxymethyl cellulose, or gelfiltration. The solution may finally be dried (e.g. by lyophilization or float-drying) or else the enzyme may be precipitated with ammonium sulphate or adsorbed on to an activated (cyanogen-treated) polysaccharide. The acylase compositions are for use in preparing 6-aminopenicillanic acids (see Division C2).  Reference has been directed by the Comptroller to Specifications 897,617 and 893,418.
Patent GB-1299605-A (GB)
Title: Improvements relating to slat type conveyors
Inventor: DECOURCY ROLAND JOHN JAMES
IPC: B65G17/00
Filed: 1969-11-25
Abstract: 1299605 Endless chain conveyers DOUGLASROWNSON Ltd 19 Nov 1970 [25 Nov 1969] 57667/69 Heading B8A A slat type conveyer, Fig. 1, from which articles may be discharged at two lateral positions comprises slats 1 connected to two endless chains 3 to which slat supports 2 are also connected, each slat having a member 6 which slides in tracks (45), Fig. 4 (not shown), mounted beneath the supports 2. The tracks are in two main parallel sets 11, 12 connected by parallel sets 18, 30, the set 11 having a switching device 15 during whose operation a required number of slats are moved along the track 13 to the track 12 from which articles resting thereon are removed by means of a plough blade 23 and during the non-operation of the device 15 the other slats continue movement along the set 11 and along the set 30 to recombine with the slats diverted by the device 15 and pass beneath a second article removing plough blade 23, the recombined slats then moving along a return track 35 back to the left in Fig. 1. The switch 15 comprises a rotatable member (51), Figs. 3 (not shown), operable by means of a solenoid (55) to direct the slat control members 6 in the direction of the arrows (65), (67), Fig. 6 (not shown), into the track 13. The conveyer may incorporate more than one switching device and the number of slats required for direction by the switching device 15 may be calculated by photo-electric cells which measure the length of the article or articles.
Patent GB-1447101-A (GB)
Title: Fluid operated circuit interrupter
IPC: H01H33/32
Filed: 1973-12-13
Abstract: 1447101 Fluid operated contactor WESTINGHOUSE ELECTRIC CORP 13 Dec 1973 [29 Dec 1972] 57726/73 Heading H1N A contactor 5 has fixed contacts 41 and a movable bridging contact 35 which is moved by a piston 15 in a cylinder 13 in dependence on a valve 55 which has an inlet 57, exhaust passages 77, 79 whose cross-sections are independently variable by screws 81, 83 respectively, outlets 59, 61 in communication with opposite sides of piston 15 and a moving member 69 moved by solenoids 73, 75 in dependence on electrical signals. The arrangement is such that in a first position of the moving member 69 (as shown) fluid under pressure is admitted to the underside of the pistion lifting the movable contact 35 away from the fixed contacts 41 whilst the topside of the piston is exhausted via passage 77, and in the other position of the moving member 69 fluid under pressure is admitted to the top side of the piston to bring the movable contact 35 into contact with the fixed contacts 41 whilst the underside of the piston is exhausted via passage 79, the speeds of these two operations being independently adjustable by controlling the cross sections of the respective exhaust passages independently by the screws 81, and 83 so that circuit interruption can be rapid and circuit making slower to avoid impact and contact bounce.
Patent GB-578904-A (GB)
Abstract: 578,904. Cooking stoves. RADIATION, Ltd.,. and PICKARD, J. C. Jan. 3, 1945, No. 270. [Class 126] A solid fuel cooking stove of the totally enclosed type is fitted with a hollow wall wherein are two passages, separated by an adjustable valve, in which air is preheated before discharge into the combustion chamber. Air enters through the apertures k in the front of the store adjacent the oven door, passes up the passage f and through the openings m which may be closed by a valve n of the rotatable type, operate by external finger pieces o. On entering the second passage g which is separated from the first passage by a plate h, and lies immediately adjacent the combustion chamber, c the air flows downwards and is preheated before discharge into the base of the chamber. Access to ashes below the chamber is gained through a door e.
Patent GB-1455699-A (GB)
Title: Processing metal ores
IPC: C22B3/00
Filed: 1973-12-14
Abstract: 1455699 Leaching sulphidic ores C H WARMAN 14 Dec 1973 [18 Dec 1972 10 April 1973] 58092/73 Heading C1A Metal values are recovered by treating ground sulphidic ores or concentrates (e.g. chaicopyrite, marmatite) with air or O 2  at a pressure between 0 and 10 Kpa (gauge) and between 20 and 40 C. while the solids are suspended in an aqueous ammoniacal solution of an ammonium salt of pH not less than 10À0, the concentration of ammonium ion of the ammonium salt being greater than 1À5 molar. The conditions minimize formation of soluble oxy-anions of sulphur and promote formation of elemental sulphur. A water-immiscible solvent for the latter, e.g. CH 2 Cl 4 , may be present during the leach, or S may be extracted from the solid residue after the leach. Specified salts are ammonium nitrate and chloride. In examples, Cu, Ni and Zn values are extracted as amines.
Patent GB-1242009-A (GB)
Title: Apparatus for measuring the absorption of radiation in fluids
IPC: G01N21/85
Filed: 1968-12-10
Abstract: 1,242,009. Photo-electric measurement of absorption by fluids. BAXTER LABORATORIES Inc. Dec.10, 1968 [Feb.16, 1968], No.58608/68. Heading G1A. [Also in Divisions G2 and G4] Apparatus for measuring properties such as turbidity, colour, density &c. of a fluid sample according to the absorption of light thereby comprises an elongated tubular probe member 18 having a deformation, defining spaced transparent surfaces 19, 20, which is filled when the probe is immersed in the liquid. Light from a source 10, Fig. 1, passes through one or more wavelength selecting filter wheels 42, light guide 24 and the sample in the test tube to a photo-cell 22. A chopper 16 synchronously chops the light passing to the light guide 24 and to a reference photo-cell 44. The output of photo-cell 22, temperature compensated by thermistor 36 is amplifed and synchronously demodulated by a chopper transistor switched by an amplified signal from the reference photo-cell 44, and the demodulated signal displayed on a meter and printed. A series of test tubes on a conveyer may be sequentially elevated into operative association with the photo-meter each until the change of temperature at its fluid level is detected by a thermistor 38.
Patent GB-1381368-A (GB)
Title: Method for rapidly mixing different gases
IPC: B01J19/24
Filed: 1972-12-19
Abstract: 1381368 Mixing gases NIPPON KOKAN KK 19 Dec 1972 [22 Dec 1971] 58646/72 Heading B1C A method of rapidly mixing different kinds of gases, one kind of gas having a higher density being introduced into a cyclone-type gas mixing chamber 11 through a gas inlet pipe 12 or 22 in a tangential direction at an upper part of the chamber, a lighter gas being introduced into the chamber through a pipe 14 or 24 at a lower part of the chamber, also tangentially but in an opposite sense, the vertical distance between the pipes is 1.5-3.0 times the diameter of the upper pipe, the lighter gas is injected into the chamber at a velocity 1.15-20.00 times that of the denser gas and, the denser gas has a vortical flow at a swirling linear velocity 1.0-3.5 times the vertical velocity at which said gas gradually descends while spirally flowing. At the lower level there may be several pipes conveying lighter gases to the chamber, wherein their mean velocity only should be 1.15-20.00. times that of the denser gas.