baber/WOPTO huggingface dataset:
Patent GB-1380849-A (GB)
Title: Automatic machine for depilating the heads of slaughtered pigs
IPC: A22B5/08
Filed: 1973-08-30
Abstract: 1380849 Depilating pigs' heads G BAROZZINI 30 Aug 1973 40796/73 Heading A2U A machine for depilating pigs' heads whilst still attached to the carcase comprises two pairs of parallel horizontal shafts carrying rotatable blades, one pair 30 being mounted above the other 31 and aligned perpendicular to it and each pair being mounted so that they can be moved apart against a spring and spring back together when released. In use, the pig's head is introduced snout-first downwards between the upper pair of shafts, forcing them apart and descending to the lower pair so that all four sets of rotatable blades can act on the head. A particular embodiment comprises a fixed frame 1, a second frame 2 which can move horizontally within frame 1 and a third frame 4 which can move vertically within frame 2. The upper pair of shafts 30 are mounted within frame 4 on rods 11 and 13 so that they can slide apart against spring 15. The rotatable blades, which are of rubber with metal tips, are driven by electrim motors 5 and 6. The lower pair of shafts 31 are similarly mounted within frame 4. They are driven by motors 7 and 8. The apparatus is situated below an overhead rail conveyor from which the carcases depend head downwards and is arranged for automatic operation as follows: When a carcase passes over the frame 4, the operator presses a button which activates motors 5-8 to rotate the shafts and a fifth motor 18 which raises frame 4 around the head. At an intermediate point in the raising of frame 4, motor 16 is automatically activated and frame 2 begins to move to the right following the movement of the carcase on the conveyor. When the head is fully depilated, frame 4 is automatically lowered and when it is clear of the head, frame 2 is automatically returned to its starting position.
Patent GB-1066518-A (GB)
Title: Device for magnetic recording of high-frequency signals
IPC: G11B25/06
Filed: 1965-09-27
Abstract: 1,066,518. Helical-scan recorders. LOEWE OPTA A.G. Sept. 27, 1965 [Sept. 26, 1964], No. 40988/65. Heading G5R. The two guide-drum halves 18, 19, Fig. 3, are joined by a fixed spindle 21 carrying bearing sleeves 32, 33 about which rotates the structure 29, belt-driven by a motor 12 outside the guide-drum and carrying the head-wheel 16. Slip-rings 26-28 and brushes 35-37 connect the head 17 to a stationary, printed-circuit amplifier on a circular board 34 inside the drum. The head may alternatively be coupled to the amplifier through a transformer. An eddy-current brake disc 32, Fig. 4, cooperates with an electromagnet 41. The motor 12 is asynchronous and tends to drive the wheel 16 some 6% fast, the brake pulling the speed down to synchronism. An iron insert 44 in the disc, detected by head 45, provides tachometric pulses for recording along one edge of the magnetic tape for use with known servo speed-control means on playback.
Patent GB-1071357-A (GB)
Title: Semiconductor switch
IPC: H01L29/00
Filed: 1964-10-08
Abstract: 1,071,357. Controlled rectifiers. GENERAL ELECTRIC CO. Oct. 8, 1964 [Oct. 18, 1963], No. 41144/64. Heading H1K. In a PNPN controlled rectifier one of the inner regions consists of a low-resistivity layer carrying the gate electrode adjacent the associated outer junction, and a high-resistivity layer adjacent the centre junction. The emitter on the gate side of the device consists of a plurality of zones contacting only the low-resistivity layer of the gate zone. The turn-off gain is improved by designing the outer junction remote from the gate region to have a low minority carrier injection efficiency. A typical device, Fig. 3, is made from a monocrystalline 20 ohm cm. N-type silicon wafer by diffusing gallium or boron into its faces and reducing the thickness of the resulting P layer on one face. A uniformly doped low-resistivity but non- degenerate P layer is epitaxially deposited on the reduced thickness layer and phosphorus diffused into it through a mask to form outer layer 18 in several sections. Externally interconnected ohmic contacts 21-21b provided on each section are uniformly spaced between externally interconnected ohmic gate contacts 23-23c.
Patent GB-918644-A (GB)
Title: Improvements relating to thermal nuclear reactors
Inventor: PRINCE KENNETH
IPC: G21C5/08
Filed: 1960-11-13
Abstract: 918,644. Moderator structures. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Nov. 21, 1961 [Nov. 30, 1960], No. 41154/60. Class 39 (4). A supporting framework for a solid moderator material comprises a grid with a layer of overlaid plates, the plates being positively located relative to the grid by sliding keying means directed radially from the plate centres and there being gaps between the plate edges so as to allow differential thermal expansion movements between the grid and the plates. As shown in Fig. 2, the keying means comprises two keys 14 with a reduced thickness joining piece between them welded to a grid bar 11 so as to project into keyways 15 machined in the undersides of adjacent plates. The keying means in this case are provided at the middle points of all four sides of each plate. Alternatively, the keying means may be provided at all four corners of each plate in which case, as shown in Fig. 4, upstanding keys 16 are grouped in a cruciform cluster of four and welded on an octagonal plate 17 let into the grid bars 11 to project into keyways 18 at the adjacent corners of four plates. Should differential thermal expansion movements occur between the grid and the plates, the latter will expand or contract individually relative to the grid, but by virtue of the keying this expansion or contraction is controlled so as to radiate from the plate centres; consequently the positions of these centres relative to the grid remain unchanged and large differentials at the periphery are obviated.
Patent GB-887221-A (GB)
Title: Sampling device
Inventor: JAMES BRIAN PERCIVAL HAROLD
IPC: G01N30/20
Filed: 1959-12-04
Abstract: <PICT:0887221/III/1> Apparatus for transferring a sample of fluid flowing through passages 7, 9 to passages 10, 12 through which a carrier gas flows to a distillation or gas chromotography apparatus comprises a plunger 1 sliding within a gas-tight packing 3 in a body 2.  The plunger is moved to the left from the position shown until the passage 8 comes into register with the passages 10, 12 and the sample contained in passage 8 is then carried into the chromotography apparatus.  A passage 13 may also be provided so that the passages 7, 9 are not cut off from each other when the passages 8, 10 and 12 are aligned.
Patent GB-1128560-A (GB)
Title: Oscillatory circuits for electro-acoustic converters
IPC: H03B5/12
Filed: 1967-09-11
Abstract: 1,128,560. Transistor oscillating circuits; ultrasonic transducers. BRANSON INSTRUMENTS Inc. 11 Sept., 1967 [15 Sept., 1966], No. 41384/67. Headings H3T and H4J. An ultrasonic transducer is operated in its parallel resonant mode, from a D.C. source of constant voltage by means of switching devices driven via a feedback circuit with an A.C. voltage which is in phase with the resistive voltage component across the transducer; an inductance is connected in series with the transducer which is resonant at the transducer resonance frequency, with the capacitive reactances of the transducer and driving circuit. Ultrasonic transducer.-A transducer comprises two discs 18, Fig. 1, of piezo-electric material separated by a metal plate 20. The assembly is bolted together and also comprises perforated metal vent plate 14 coupled to a sonic energy impedance transformer or horn 24, and a massive metal back plate 22. The assembly is supported in a metal casing 12 which also encloses a cooling fan 30. Transistor oscillating circuits.-A constant voltage D.C. supply is obtained from A.C. mains terminals 60, 61 via bridge-connected rectifiers 62 and smoothing capacitor 63, and is supplied to transistors 64, 65 which operate as switches, being respectively driven into saturation for alternate half-cycles of the oscillation frequency. Transducer 10 operates at its parallel resonance frequency, appearing at its terminals as a parallel resonant circuit loaded by shunt resistance and in series with a capacitance (C 0 , Fig. 3, not shown). It is shunted with a voltage-reducing capacitor 70 and is driven from transistors 64, 65 via series capacitor 67 and windings 68, 69 of a transformer T1, series inductance 66 being provided to resonate at the oscillation frequency with capacitance 67 and the reflected capacitance of the transducer. Transistors 68, 69 are driven alternately into saturation by means of a transformer T2, the primary 73 of which is back-coupled via D.C. blocking capacitor 72 to capacitor 67 and a feedback winding 71 in transformer T1; capacitance 67 ensures that the feedback voltage is in phase with the resistive voltage component across the transducer 10. A series-resonant circuit may be placed in the feedback path and its frequency of resonance adjusted to compensate for delay in transistor switching (Fig. 8, not shown). A number of alternative arrangements are disclosed in the Specification, in which the feedback is taken from the secondary of the driving transformer T1; in one of these (Fig. 12, not shown), the oscillating transistors are driven via a preceding stage comprising a pair of similarly-connected transistors.
Patent GB-1482965-A (GB)
Title: Storage box
IPC: B65D5/44
Filed: 1974-09-25
Abstract: 1482965 Storage box formed from flat blanks CARL-ERIK GRUNDELL 25 Sept 1974 [27 Sept 1973 20 March 1974] 41681/74 Heading B8P A container comprises an inner box-shaped member (Fig. 2) and an outer cover (Fig. 3) which comprises at least a bottom and two sides, the inner member and the cover each being assembled from flat blanks, and the upper edges of a side-wall of the cover and the adjacent side wall of the inner member are secured together by a retaining member having a channel extending along its length and into which the upper edges of the respective sidewalls extend to be retained therein. As shown retaining members are used to secure together the upper edges of both pairs of adjacent side walls, the upper edges of the cover side walls being folded about the upper edges of the inner member side walls and the retaining members being placed about the resultant edges. A lid, e.g. 28 as shown may be provided forming part of either the inner member or of the cover. Means are described for securing together a plurality of such containers.
Patent GB-1183938-A (GB)
Title: Prilling
Inventor: JEWELL ROBERT EDWIN
IPC: C05C1/02
Filed: 1966-09-21
Abstract: 1,183,938. Prilled fertilizers. FISONS FERTILIZERS Ltd. 6 Oct., 1967 [21 Sept., 1966], No. 42061/66. Heading C1B. A fertilizer material containing ammonium nitrate and/or urea is prilled in the presence of suspended and/or fluidized dust containing potassium chloride, more than 50% (based on material) of potassium chloride, thereby being absorbed in the prills. The material may also contain ammonium sulphate, monoammonium phosphate, diammonium phosphate, potassium phosphate, potassium nitrate, sodium nitrate; magnesium nitrate, magnesium carbonate, or magnesium oxide. The dust may also contain limestone, sand, mica, bentonite, gypsum, talc, clay, cement, earth, or polyethylene. The suspending and/or fluidizing medium may be air or nitrogen. The suspended dust may be evolved from a fluidized bed or may be separately introduced above a fluidized bed. The material may be sprayed down a tower in countercurrent to gas which has a velocity of 1À2-4 ft./sec. and contains up to 11b./cu. ft. of dust. The dust may have a particle size of less than 100 BS. The prills may have a particle size of 3 mm..
Patent GB-1162987-A (GB)
Title: Expoxidation Process
IPC: C07D301/19
Filed: 1966-09-23
Abstract: 1,162,987. Epoxides. HALCON INTERNATIONAL Inc. 23 Sept., 1966 [1 Oct., 1965], No. 42585/66. Heading C2C. In a process for the production of oxirane compounds by oxidizing ethyl benzene with oxygen to give ethylbenzene hydroperoxide, epoxidizing olefines with the ethyl benzene hydroperoxide thus formed, recovering unreacted ethyl benzene and recycling it to the ethyl benzene oxidation step, the recycle benzene is treated with an aqueous basic solution or with a solid adsorbent selected from molecular sieves, activated carbon, adsorbent clays, alumina, base-treated silica gel and basetreated silica-alumina, prior to re-use in the oxidation step.
Patent GB-980786-A (GB)
Title: Improvements in and relating to electrical switching devices
Inventor: WILSON GEOFFREY WILFRED
IPC: H01H9/54
Filed: 1962-11-12
Abstract: 980,786. Protective arrangements; heavy current switches. C. A. PARSONS & CO. Ltd. Oct. 10, 1963 [Nov. 12, 1962], No. 42600/62. Drawings to Specification. Headings H2B and H2K. A circuit breaker consists of a main switch and a secondary switch connected in series, a resistor of positive temperature coefficient being connected across the secondary switch. To interrupt the current through a load, the secondary switch is first opened to insert the resistor in circuit. The current flow therein heats the resistor, its value thus increasing by several orders of magnitude and reducing the current accordingly. The circuit is finally broken by the main switch. The resistor is made of a ceramic material such as barium titanate, barium strontium titanate or barium lead titanate containing impurities such as lanthanum, tantalum, cerium or yttrium.
Patent GB-1018305-A (GB)
Title: Polyester based printing inks
IPC: C08L67/00
Filed: 1962-11-12
Abstract: An alcohol soluble polyester is made by reacting (a) an aliphatic polyhydric alcohol; (b) a polycarboxylic acid; and (c) a 4,4-bis (hydroxyphenyl) pentanoic acid of formula <FORM:1018305/C3/1> where R is chlorine, bromine or lower alkyl and n is 0, 1 or 2, or a mixture of such an acid with up to 60% mol. of an aliphatic monocarboxylic acid containing 9-22 carbon atoms; the molar ratio of polycarboxylic acid to polyhydric alcohol being between 1: 7 and 6: 2 and the molar ratio of monocarboxylic acid to polyhydric alcohol being between 2: 7 and 8: 2.  The reaction mixture may also include a minor amount of an aromatic monocarboxylic acid (e.g. benzoic, parato line or hydroxybenzoic acid).  Specified for (a) are ethylene glycol, propylene glycol, 1: 2- or 1: 4-butanediol, 2: 5-pentanediol, 1: 6-hexanediol, neopentyl glycol, di- and poly-ethylene glycols, polypropylene glycols, trimethylol ethane, trimethylol propane, erythritol, pentaerythritol, polypentaerythritols, sorbitol, mannitol and polyallyl alcohol.  Specified for (b) are adipic, malonic, azelaic, sebacic, succinic, maleic, fumaric, aconitic, carbic, phthalic, isophthalic, terephthalic, polyisophthalic, polyterephthalic and dimerized fatty acids.  Inks are made by dissolving the resin in the solvent (e.g. ethyl alcohol diethylene glycol, butyl carbitol, butyl carbitol acetate, dimethyl phthalate, a mixture of dimethyl phthalate and diethylene glycol or a mixture of ethyl alcohol and methyl ethyl ketone) and adding a pigment (e.g. chrome green, carbon black or a mixture of phthalocyanine blue and aluminium oxide).  Other synthetic resins may also be added (e.g. phenolformaldehyde, urea - formaldehyde, polyvinyl chloride, polyvinyl butyral, polymethyl methacrylate, a copolymer of ethyl acrylate and methyl methacrylate, ethyl cellulose, nitro-cellulose or cellulose acetate butyrate).
Patent GB-1470908-A (GB)
Title: Regenerated cellulose softener recovery method and apparatus
IPC: B29D7/00
Filed: 1975-10-17
Abstract: 1470908 Recovering material from cellulose film E I DU PONT DE NEMOURS & CO 17 Oct 1975 [18 Oct 1974] 42712/75 Heading B5B Gel regenerated cellulose film 10 at about 45‹ C. is guided by rolls 12 through a tank 11 containing an aqueous solution of a film softening agent, e.g. propylene glycol at 67-77‹ C. and then over heated rolls 14 in a drying chamber 15 at 60-100‹ C. through which passes a countercurrent of air at 66-94‹ C. Excess water and softening agent accompanying the treated film are vaporized and carried by the air stream through the duct 16 to a recovery chamber 17 by means of fans 18 and 19. A pump and heat exchanger in a recirculation loop 20 automatically controls the temperature of the bath 13 preferably at 73-7‹ C. Solution 13 is moved from tank 11 to a bank of spray nozzles 21 located within absorption section (I) by pump 22 and pipe 23. Bank 21 is arranged so that the softener solution is uniformly disposed as a mist throughout the entire incoming dryer exhaust air stream. The air stream from section (I) which is saturated with water and a portion of softening agent not absorbed is passed through a mist eliminator 25 into absorption section (II) which comprises a sump 26 from which a separate dilute aqeuous solution of softening agent is continuously recirculated over absorption media 27 by means of a pump 28 and pipe 29 and banks of spray nozzles 30 of similar construction to those in (I). The level of water in 26 and the loss of water from the treatment process are controlled by an automatic control valve 32 in water line 33. Water-saturated dryer exhaust air stream finally passes through a second mist eliminator 34 to remove fine, entrained water droplets prior to the air stream leaving the recovery apparatus.
Patent GB-1243692-A (GB)
Title: Water-soluble disazo dyestuffs, metal complex compounds thereof and process for preparing them
IPC: C09B62/515
Filed: 1968-09-09
Abstract: 1,243,692. Reactive disazo dyes and metal complexes thereof. FAEBWERKE HOECHST A.G. 9 Sept., 1968 [9 Sept., 1967], No. 42804/68. Heading C4P.  The invention comprises water-soluble disazo dyes of formula wherein A is a benzene or naphthalene residue having the -OR group ortho to -N=N-, K is a coupling component residue of the benzene, naphthalene, pyrazolone or acetoacetarylamide series, Z is a -SO 2 -CH 2 - CH 2 -X or -SO 2 -CH=CH 2  group, X is a group that can be split off by alkaline agents, R is H, CH 3  or C 2 H 5 , m and n are each 0, 1 or 2, m+n being 1 or 2, and metal (e.g. Cu, Cr or Co) complexes thereof. The dyes are prepared by successive coupling of the components Z m - A(OR)-NH 2 , 2-amino-6-naphthol-8-sulphonic acid and K-Z n  with subsequent metallization if desired. The dyes may be used to colour wool, silk, polyamide, polyurethane and cellulose fibres by the usual reactive dyeing processes in brown, navy-blue and grey shades.
Patent GB-1124900-A (GB)
Title: A reel mounting for stranding machines
Inventor: SCHAPER DIETER
IPC: D07B7/06
Filed: 1966-09-28
Abstract: 1,124,900. Reel support in stranding machines. SCHWERMASCHINENBAU ERNST THALMANN VEB. 28 Sept., 1966. No. 43408/66. Heading D1T. The .reel 11 is mounted on a bearing bush 5 rotating via bearings on an upright pin 4 carried by a floating cradle 1. Slidable locking members 8, 9 can be caused to move towards each other by manually moving two pins 12, 13 towards each other. The locking members 8, 9 are normally biassed apart to project over the top of the reel 1 and so hold it on the bush 5. When the pins 12, 13 are squeezed towards each other the locking members 12, 13 retract and the reel 11 can then be withdrawn. The bush 5 is flanged at its lower end to act as a brake disc 6. A foam-rubber ring 17 closes the gap between the brake disc 6 and the reel flange. The cradle 1 may be pivotally mounted at one or both ends.
Patent GB-1401787-A (GB)
Title: Gas purification process
IPC: B01D53/50
Filed: 1972-09-21
Abstract: 1401787 Gas purification process; potassium sulphate FRIEDRICH UHDE GmbH 21 Sept 1972 [23 Sept 1971] 43778/72 Heading C1A Sulphur dioxide is removed from a gas mixture by scrubbing with a solution containing K, OH and Cl ions which originates from a diaphragm electrolysis cell, to produce a solution containing sulphite ions, oxidizing the sulphite to sulphate, adding KCl to the oxidized solution and recovering potassium sulphate. Oxidation may be carried out with a free oxygen containing gas at between 50‹ and 100‹ C. at a pressure between 3 and 24 atmospheres. The amount of KCl added to the oxidized solution may be such as to make the total KCl content 250-350 g./litre. The solution may be taken from a cell with metal anodes, e.g. Ti.
Patent GB-1018046-A (GB)
Title: Process for depolymerizing dicyclopentadiene or its methyl homologues
IPC: C07C4/22
Filed: 1964-10-27
Abstract: Monomeric cyclopentadiene or a homologue is obtained from the dimer by cracking in the gas phase, to convert at least a major part into monomer, mixing with vapours of a stable inert liquid boiling in the range 160-360 DEG  C., passing the mixture into a fractionating column and recovering pure monomer as overhead distillate. Suitable inert liquids are tetralin decalin, diethylbenzene, di- or tri-chloro-benzene, diphenyl ether or a petroleum fraction boiling above 200 DEG  C.  Dimer is preferably injected into the cracking reactor at the same rate as monomer is recovered.  An automatic control may effect total reflux if the boiling point of the monomer is exceeded at the head of the fractionating column while simultaneously cutting off dimer supply.  Dimer is preferably vaporized and cracked by introducing into a vertical tubular reactor at 200-400 DEG  C. having a packing of copper or a copper alloy on which the dimer can vaporize. Specification 612,893 is referred to.
Patent GB-1475718-A (GB)
Title: Mould for manufacturing articles of fibre-reinforced synt'hetic  plastics material
IPC: B29C45/28
Filed: 1974-10-10
Abstract: 1475718 Mould valves SCANDINAVIAN GLASFIBER AB 10 Oct 1974 [11 Oct 1973] 43887/74 Heading B5A In a mould for making an article of cured synthetic plastics material reinforced with a fibrous material which is introduced between the mould parts before they are assembled together, comprising an inlet 7 for injecting the plastics material in an uncured state, the part of of the inlet disposed nearest the mould cavity 3 is formed as a valve comprising a valve seat 8 facing the cavity and a loose valve body 9. The injection pressure pushes the valve body 9 downwardly leaving a gap 13 and when injection is stopped the valve body is pushed upwardly to close the inlet 7 by the pressure of resin within the cavity. In the example, resin containing a catalyst is mixed with resin containing an accelerator in an injection gun 10. Instead of being frusto-conical as shown the valve body 9 may be conical or spherical.
Patent GB-1211546-A (GB)
Title: Improvements in or relating to apparatus for stacking sheets
IPC: B65H31/24
Filed: 1967-09-27
Abstract: 1,211,546. Stacking sheets. MASSON SCOTT THRISSELL ENG. Ltd., and J. P. BENNETT. 25 Sept., 1968 [27 Sept., 1967], No. 43951/67. Heading B8R. Sheets are delivered in side-by-side arrangement to form a plurality of side-by-side stacks, the stacks being separated by dividers of plastics material. Sheets are fed by conveyers 1, 2 in side-by-side arrangement and in overlapping fashion to a further conveyer 8 and adjustable roller 9, and are stacked on receiver 18 in a plurality of side-by-side stacks, S. The conveyer 8 and roller 9 are mounted on a block 11 which can be raised or lowered by cable 12, while conveyers 1, 2 can pivot on support structure 14, to keep the sheet-delivery apparatus level with the top of the pile. Dividing plates 19, 25 separate adjacent stacks S, and plates 19 may be vibrated by means of a pneumatic device 22, 23, 24; plates 25 are generally raised with plates 19 as the block 11 is raised. The plastics material from which the plates are made may be an epoxy resin/glass cloth laminate, a glass fibre/polyester laminate, an epoxy resin/glass laminate or may be homogeneous, and optionally transparent.