baber/WOPTO huggingface dataset:
Patent GB-1070575-A (GB)
Title: Improvements in or relating to methods of and apparatus for producing synthetic plastics strip material
IPC: B29C37/00
Filed: 1963-11-08
Abstract: 1,070,575. Moulding stress free strips. B. F. GOODRICH CO. Nov. 8, 1963 [Nov. 8, 1962], No. 44158/63. Heading B5A. A hot sheet of synthetic plastics material formed by, e.g. extrusion or calendering, is drawn between a series of pairs of conveying members, e.g. rollers, by contact with said conveying members. The peripheral speed of each pair is less than that of the directly preceding pair so that as the sheet proceeds it is longitudinally shrunk thus preventing any shrinkage after it has cooled due to any residual stresses therein. In the embodiment shown, the sheet 32 is passed under heaters 45 between pairs of rollers 31, 16 each successive pair having a smaller diameter than the preceding pair but being rotated at the same speed, and consequently having a slower peripheral speed. The lower rollers 16 are supported from the side plates 29 of a framework 11, 12 and are driven by a chain 19 which passes around drive sprocket 22, and identical sprockets 33 mounted at one end of the rollers 16. The upper rollers 31 are mounted upon similar side plates of an upper framework which is pivoted about a pivot carried by a member 25, itself vertically adjustable along guides 24 mounted on the lower framework 11, 12. The rollers 31 are driven by means of chain 40 and sprocket 44 which sprocket drives chain 35 over sprockets 33 mounted on the rollers. The rollers form a track for the sheet in the shape of an inverted catenary and are near enough together to prevent any sagging of the sheet therebetween.
Patent GB-1533101-A (GB)
Title: Apparatus for severing and threading-up two threads
IPC: B65H67/04
Filed: 1975-10-28
Abstract: 1533101 Continuous thread winding; transferring thread to new bobbins MASCHINENFABRIK RIETER AG 28 Oct 1975 [15 Nov 1974] 44332/75 Heading DIJ A winding machine comprises two bobbin tubes on a common bobbin chuck, a common bobbin drive, a thread traverser, a device for forming a reserve winding on each bobbin, an apparatus for severing the threads running to the bobbins and including a thread suction device, the apparatus being movable across the thread paths, and two thread holders for each tube, one each of the two holders being movable about the chuck into a position for securing thread to the bobbins. Threads 15, 15', Fig. 1, are traversed by device 5 on to packages S, S' held on chuck 3 and driven by drum 1. When the packages are complete suction tube 8 is advanced in sleeve 10 so that knife 9 cuts the threads which are sucked into the tube. When the tube is withdrawn outside the traversing area, the running threads 15', 15 engage movable holders 14', 14 and lie behind fixed holders 17', 17. When the bobbins have been manually exchanged for empty bobbin tubes, Fig. 2, holders 14 on rod 13 and arm 12, and tube 8 in sleeve 10 on arm 11, are pivoted, Fig. 3, so that the threads engage holders 17 and engage the tubes at adhesive areas A. Tube rotation breaks the threads at tube 8, and the threads are carried to thread-reserve formers 7, 7' and are then traversed.
Patent GB-1022046-A (GB)
Title: Amides of substituted thiazolidinones and preparation thereof
Inventor: SATZINGER GERHARD
IPC: C07D277/34
Filed: 1962-11-23
Abstract: The invention comprises compounds of the formula <FORM:1022046/C2/1> wherein R1 is hydrogen, phenyl or C1-6 alkyl, R2 is hydrogen or C1-6 alkyl and R3 is C1-6 alkyl and their preparation by partial hydrolysis of the corresponding 2-cyanomethylene compound by reaction with an acid, such as concentrated sulphuric acid, at 10 DEG  to 40 DEG  C.  Pharmaceutical preparations having analgesic and sedative activity comprise the above compounds together with a carrier, suitably in the form of tablets, capsules, solutions, suspensions and suppositories.
Patent GB-1588368-A (GB)
Title: Flame retardant radiation sensitive element
IPC: C08F2/50
Filed: 1977-10-25
Abstract: The radiation-sensitive element consists of a carrier which carries a layer of a composition which can be photo-polymerised. The composition consists of (1) at least one compound which can be addition polymerised and is ethylenically unsaturated, (2) an initiator which can be activated in the ultraviolet to visible range of the spectrum, and (3) at least 20% by weight of a binding agent which can be polymerised and itself contains at least 5% by weight of acrylonitrile, there being at least 5% by weight of halogen, related to the total weight of the composition, in said composition, the halogen being bonded in a covalent manner to at least one component of the composition. The element is flame-retarding and can be used as a photoresist or as a soldering mask.
Patent GB-967639-A (GB)
Title: Improvements in or relating to electrical signal generators
Inventor: SKINNER PETER
IPC: H02K19/20
Filed: 1961-12-13
Abstract: 967,639. Measuring speed electrically. DECCA Ltd. Dec. 4,1962 [Dec. 13, 1961], No. 44576/61. Heading G1N. [Also in Division H2] A signal generator for generating an output whose frequency is proportional to a rotational speed comprises a rotatable ferromagnetic annular member 35 having radially inwardly directed teeth 36 and within which extends in a diametral direction a fixed core 14 bearing a coil 16 through which is passed a field-producing direct current, and an output circuit from the coil including a D.C. blocking capacitor 45 to permit the passage of only A.C. signals. The member 35 is secured in a light alloy cylinder 30 drivable by e.g. a magnetic tape and carried by integral apertured flanges 32 of a spindle 31 mounted in bearings 34. The core 14 has at each end two or more teeth 15 and is mounted in a non-ferromagnetic stator 10, 11 slotted and resin filled at 19 to prevent eddy current losses. A further stator slot 22 houses the-winding leads 20, 21,and flanges 37, 39 form dust-excluding labyrinths. In Fig. 6, the direct current applied to terminals 42, 43 is smoothed by a capacitor 44, and rotation of the teeth 36 modulates the magnetic flux to develop across a resistor 40 an alternating voltage which is fed via a transistor 46 to an output lead 49. A rectifier 50 improves the squaring action of the transistor. In another circuit Fig. 7 not shown the transistor is of the PNP type.
Patent GB-1067548-A (GB)
Title: Method of measuring the thickness and refractive index of a thin oxide layer
Inventor: PEACOCK ROBERT DAVID
IPC: G01B11/06
Filed: 1964-11-02
Abstract: 1,067,548. Measuring refractive indices. STANDARD TELEPHONES & CABLES Ltd. Nov. 2, 1964, No. 44580/64. Heading G2J. A method of determining the refractive index of an oxide layer 2 formed on a slice of semiconductor material 1 comprises the steps of forming a wedge of the oxide layer 2, forming a first set of interference fringes 4 in the wedge by illumination with monochromatic light of known wavelength # and counting the member n of fringes in the wedge, which number n is related to the thickness t and the refractive index Á of the oxide layer by the formula and then using an optical flat 6 inclined with respect to the oxide layer 2 to form a second set of interference fringes 5 substantially at right angles to the first set in the air wedge between the slice 1 and the optical flat 6, and measuring the separation S of the fringes and their displacement D produced by the oxide wedge, which measurements satisfy the formula whereby the refractive index Á is evaluated on elimination of t from equations (1) and (2). The thickness t is then obtained on substitution of the value of Á in either equation (1) or (2).
Patent GB-1078837-A (GB)
Title: Improvements in or relating to switches
Inventor: SCHWEITZER ULRICH
IPC: H01H1/38
Filed: 1965-10-22
Abstract: 1,078,837. Switch contacts. E. SCHEUBECK, [trading as MASCHINENFABRIK REINHAUSEN GEBRUDER SCHEUBECK KOMM. GES.]. Oct. 22, 1965 [Oct. 28, 1964], No. 44794/65. Heading H2B. A socket for a switch in the form of a plug- and-socket comprises an annular conductive member 1 in double conical form in longitudinal section with upper and lower contact surfaces 3, 4 inclined at less than 45 degrees to a plane perpendicular to the axis of the socket to form contact surfaces for spring-loaded balls 6, 7 arranged in circular form and retained by an insulating cap 9, 10 at each end, the springs 12 for the balls being obliquely arranged and pressing the balls 6, 7 against both the inserted plug 8 and the contact surfaces 3, 4 to provide contact between them. The caps 9, 10 are provided with comb-like prongs 13 between the balls to prevent them falling out when plug 8 is withdrawn. A number of sockets, each with four balls at top and bottom, may be arranged in a circle (Fig. 3, not shown), for connections between a power changeover switch and tap-selector in tap-changer arrangements.
Patent GB-1505239-A (GB)
Title: Process for producing fluorinated acyl fluoride having an ester group
IPC: C07C/
Filed: 1976-10-28
Abstract: 1505239 Acyl fluoride esters ASAHI GLASS CO Ltd 28 Oet 1976 [11 Nov 1975] 44890/76 Heading C2C Acyl fluoride esters of general formula where n = 2-4 and R is the residual group of an alcohol, are prepared by reacting a perfluorolactone of formula  with an alcohol, ROH. This reaction is preferably performed with anhydrous lactone in an anhydrous inert organic solvent with a molar ratio of lactone : alcohol of 0À5-1À5 : 1. In the examples 3-methoxycarbonyl- and 3-ethoxycarbonyl perfluoro-propionyl fluoride are obtained.
Patent GB-1127643-A (GB)
Title: Improvements in or relating to hydrocyclones
IPC: B04C5/16
Filed: 1965-10-22
Abstract: 1,127,643. Hydrocyclones. T. R. NAYLOR. 22 Oct., 1965, No. 44945/65. Heading B2P. A hydrocyclone has an underflow discharge orifice defined by at least one resilient member having a generally frusto-conical bore forming a continuation of the interior of the main body 2 of the hydrocyclone, the resilient member being so mounted on the body 2 as to be axially compressible whereby it is deformed radially to reduce the minimum diameter of the bore by at least 10% of its unstressed value. As shown, a member of resilient (e.g. rubber latex) members 12a-c are held to be compressed against the bottom face of the body by a screwed cap 10 with the interposition of a washer 14. A single resilient member may be provided out of a number of interchangeable members having bores of similar taper and maximum diameter but of different minimum diameters. When a number of resilient members are provided, one or more of the members can be removed to vary the unstressed value of the minimum diameter of the orifice.
Patent GB-1203062-A (GB)
Title: An electric machine liquid-cooled winding conductor
Inventor: TJERNSTROM OVE
IPC: H02K3/24
Filed: 1967-10-03
Abstract: 1,203,062. Dynamoelectric machine winding conductors. ALLMANNA SVENSAK ELEKTRISKA AB. 3 Oct., 1967 [4 Oct., 1966], No. 44985/67. Heading H2A. In a rotary electrical machine stranded tworank liquid-cooled winding conductor having each rank composed of first and second parts of substantially equal width and shaped in the manner of a Roebel transposition to alternate along their length between right- and left-hand sides of the conductor, each first part 2 is solid, whereas each second part comprises at least one cooling tube 5 of a material, e.g. stainless steel, of greater mechanical strength than that, e.g. Cu, of the first part, and at least one solid strand 4 arranged beside and of substantially the same height as the tube(s). In another embodiment, Fig. 3, the second part comprises two strands (4a), (4b), one on each side of the tube 5; or the first part 2 may have a smaller radial thickness than that of the second part 4, 5. The conductor may be in the slots of a stator.
Patent GB-1122462-A (GB)
Title: Improvements in or relating to electrical welding apparatus
IPC: B23K11/26
Filed: 1965-10-27
Abstract: 1,122,462. Capacitor-discharge welding systems; rectifying. UNITEK CORP. 27 Oct., 1965 [3 Sept., 1965], No. 45550/65. Headings H2F and H2H. In a welding system of the type in which a capacitor 16 discharges through the primary winding 19 of a pulse transformer 22 whose secondary 26 supplies welding electrodes 28, the capacitor is charged at a constant linear rate (Fig. 5A, not shown) by a rectified square wave supply obtained from a known resonant-type transformer 10 and rectifier bridge 14, the transformer 10 having a magnetic shunt to decouple a portion of the secondary winding 13 to provide, with a capacitor 23, an LC circuit resonant at mains frequency. To initiate a welding operation a signal from a trigger source 44 fires a silicon controlled rectifier 32 to cause conduction of an ignitron 36 (by discharge of a capacitor 33) and hence discharge of the capacitor 16. The signal from source 44 is also passed to a time delay circuit 42 which, after a predetermined time, produces a signal to fire another silicon controlled rectifier 34 and thus discharge a capacitor 40 through winding 31 of a transformer 37 to cut off the ignitron 36 and permit recharge of capacitor 16. After another predetermined time the circuit 42 produces a second signal which cuts off the rectifiers 32, 34 and allows capacitors 33, 40 to recharge. The rectified square wave supply for the capacitor 16 may be obtained by using a conventional transformer whose secondary winding is shunted by a double-anode Zener diode and feeds a rectifier bridge, Fig. 2 (not shown). Fig. 3 shows another rectified square wave supply arrangement in which current flow to the base of a transistor 68 above the breakdown voltage of a zener diode 70 causes conduction of transistor 68 and consequent shunting to ground of that portion of the output from rectifying circuit 58, 60 above the breakdown level. In a modification of Fig. 3, the transistor is connected between the rectifier output and one output terminal, with its base connected to the other output terminal through the Zener diode, the transistor thus regulating the rectifier output voltage to the level of the Zener breakdown voltage, Fig. 4 (not shown).
Patent GB-991070-A (GB)
Title: Process for preparing hydroxyaryl sulfonium chlorides
IPC: C09K23/00
Filed: 1963-11-19
Abstract: Hydroxyarylsulphonium chlorides are prepared by reacting an organic sulphide with chlorine to form an adduct (presumably R2ClS+Clfrom R2S) and reacting this with a phenol containing at least one reactive position. Examples 1-4 describe the preparation of 2-methyl - 4 - hydroxyphenyl, 4 - hydroxyphenyl and 4 - hydroxy - 2 - methylphenyl dimethyl sulphonium chlorides from m-/p-cresols, phenol and m-cresol, respectively, with the dimethyl sulphide-chlorine adduct; Examples 5 and 6 describe similar preparations of 4-hydroxy-2-methylphenyl dioctyl sulphonium chloride and phenyl 4 - hydroxy - 3 - methylphenyl methyl sulphonium chloride using initially dioctyl and methylphenyl sulphides and reacting the products with m-/p-cresols and o-cresol respectively.
Patent GB-1069833-A (GB)
Title: Improvements in internal shoe drum brakes
Inventor: REDMAYNE LEONARD
IPC: F16D65/22
Filed: 1962-12-05
Abstract: 1,069,833. Internal shoe-drum brakes. GIRLING Ltd. March 5, 1964 [Dec. 5, 1962], No. 45934/62. Addition to 972,240. Heading F2E. In an internal shoe drum brake in which the shoes 11, 12 are urged into engagement with a brake drum (not shown) by mechanical (33) or hydraulic (17) means, each shoe being adapted to be actuated mechanically through a carrier or lever 21 disposed in a plane off-set from and adjacent to the radial web 14 of each shoe, the shoe being permitted to move circumferentially relative to the carrier or lever. The shoes fulcrum at one end on fixed abutment members 18 and at the other end on tappets 19 which are adjustably screwed into a fixed member 20 mounted on the stationary backing plate 12 the shoes being adapted to be actuated mechanically through the arcuate carriers or levers 21 and each carrier or lever fulcrums at one end on one of the adjustable tappets 19, the other ends of-the carriers or levers being adapted to be separated by the mechanical actuator generally indicated at 33. A radially disposed strut or thrust member 29 of segmental outline having a rounded inner end is in rocking engagement with the rounded inner end of an opening 30 in each carrier or lever at the middle of its length. The struts or thrust members 29 can engage at their outer ends directly with the flange 31 of the shoes (Fig. 2, not shown) but preferably a sheet metal pressing 32 is welded or otherwise secured to the part of each flange 31 between the latter and the outer end of the strut or thrust member 29.
Patent GB-1152210-A (GB)
Title: Synchronizing System
IPC: H03L7/00
Filed: 1966-10-14
Abstract: 1,152,210. Automatic phase control. INTERNATIONAL STANDARD ELECTRIC CORP. 14 Oct., 1966 [21 Oct., 1965], No. 45946/66. Heading H3A. A system for synchronizing a locally generated timing signal with an incoming data signal comprises an oscillator producing pulses at a frequency which is an integral multiple of the transmission speed of the data, a divider for dividing down the oscillator output to correspond to the transmission speed and a comparator for comparing the divider output with the received data signal. The comparator includes logic circuits, Fig. 5, which detect an early or late occurrence of the information signal with respect to its ideal instant of occurrence. Input timing signals n 1 , n 2 , Fig. 8, are fed to the clock pulse circuit, Fig. 6 and Fig. 7 (not shown) to produce clock pulses # 1 R, # 2 R, and also pulse trains a<SP>1</SP> 1 , a<SP>1</SP> 2 , b<SP>1</SP> 1 , b<SP>1</SP> 2  which are fed to the detector circuit, Fig. 5, together with the data signal s. If a transition of the data signal does not occur in the tolerance zone U 0 , but is late, as shown in Fig. 8, the p signal circuit is triggered to its "1" state, and is not reset until the arrival of n 1 .b 1 .b 2  at its reset input. The next n 2  pulse is thus prevented from switching the circuits A<SP>1</SP> 1 , A<SP>1</SP> 2 , B<SP>1</SP> 1 , B<SP>1</SP> 2 , Fig. 6, and all the signal patterns are delayed. If the transition occurs early in zone U 1 , Fig. 9, then the y signal circuit is not triggered to its "0" state until later and the next trigger pulse for the A<SP>1</SP> 2  stage is diverted to the B<SP>1</SP> 2  stage, resulting in all patterns being advanced. For greater deviations of s, correction continues in steps until the s transition falls in zone U 0 .
Patent GB-1536780-A (GB)
Title: Bearings
IPC: F16C33/06
Filed: 1976-11-10
Abstract: 1536780 Welding by fusion GLACIER METAL CO Ltd 10 Nov 1977 [10 Nov 1976] 46708/76 Heading B3R [Also in Division F2] A flanged half-bearing comprises a semicylindrical shell 11 and at least one semiannular end flange 12 in contact with an axial end of the shell over a part only of the thickness of the shell, and being so held in contact by a laser beam weld extending in a semi-circular path between the shell and the flange. The bearing surfaces may carry a coating of an alloy of aluminium and tin. Lubrication channels 15 may be provided in the flange. The laser beam may be directed at an angle between 30 degrees and 60 degrees to the axis of the shell (Fig. 2, not shown). Pulsed laser welding may be employed.
Patent GB-1280298-A (GB)
Title: Improvements in and relating to combustion detectors
IPC: G08B29/18
Filed: 1969-05-27
Abstract: 1280298 Fire alarms BRK ELECTRONICS Inc 27 May 1969 [8 Aug 1968] 46905/71 Heading G4N The subject matter of this Specification is also contained in Specification 1280297, but the claims are concerned with a fire detector having means for preventing false operation due to naturally occurring slow changes in ambient conditions.
Patent GB-1001618-A (GB)
Title: Method of preparing clear acrylonitrile films and films prepared by such method
IPC: D01F6/18
Filed: 1962-08-27
Abstract: 1,001,618. Acrylonitrile polymer films. FMC CORPORATION. Aug. 27, 1962 [Nov. 20, 1961 (2)], No. 46973/64. Divided out of 1,001,617. Heading B5B. A solution of 5% to 25% by weight of an interpolymer of at least 50% by weight of acrylonitrile and at least one other monomer copolymerizable therewith, in a solvent comprising a lower dialkyl amide (as defined) of a lower fatty acid (as defined), nitromethane, acetone or mixtures thereof, is formed into a film, which is coagulated in a bath comprising 15% to 90% of a lower dialkyl amide of a lower fatty acid and water at - 10‹ to +10‹ C., washed with a butyl alcohol or water, and dried at 100‹ to 140‹ C. " Lower dialkyl amide " is defined as an amide of which each alkyl group contains 1 to 6 carbon atoms. " Lower fatty acid " is defined as a fatty acid containing 1 to 10 carbon atoms. Specified monomers copolymerizable with acrylonitrile include acrylic and methacrylic acids and their ethers and esters; vinyl ester, ethers and ketones; halogenated vinyls; 2-vinyl pyridine ; styrene and substituted styrenes; methacrylonitrile, isobutene, butadiene, and itaconic and fumaric acids and their esters. Many fatty acid dialkyl amides are specified, the preferred compound being dimethyl formamide. The washing of the film after coagulation is preferably effected at- 10‹ to +30‹ C. for 15 to 120 seconds. The film is preferably biaxially stretched while drying. In the examples, polymer solutions are cast on to glass plates, which are then immersed in the coagulating bath. The films are dried either on the plate or clamped into frames.
Patent GB-1031299-A (GB)
Title: Process for regenerating ion exchange resins
IPC: B01J49/00
Filed: 1962-12-14
Abstract: Liquid which has been treated by ion-exchange is used either at a sifferent temperature or different concentration as regenerating liquid for the exchange resin.
Patent GB-1398544-A (GB)
Title: Pneumatic mattress for bedridden patients
IPC: A61G7/00
Filed: 1972-10-13
Abstract: 1398544 Mattresses AUTO ROLLS S R L 13 Oct 1972 [14 Oct 1971] 47447/72 Heading A4M A mattress 1 for bedridden patients includes an air-impervious diagonal wall 701 dividing the mattress into two independently inflatable compartments 2, 3 communicating valve respective ducts 4, 5 and valves 9, 10 with an air pump 6, the valves 9, 10 being operated alternatively in a timed sequence to alternately inflate and deflate the chambers 2, 3 through stages in which one or other chamber only is inflated and in which both chambers are either inflated or deflated. The cycle of operations effects a rolling of the patient from side to side, the patient being secured to the mattress by straps 801, 901. Each valve 9, 10 includes a first port 15 which in one valve position puts the respective chamber in communication with the pump 6 and a second port 16 which vents the chamber to atmosphere. The pump 6 works in conjunction with a timing mechanism 17 controlling electromagnets 18, 19 for displacing a valve port 14.
Patent GB-1183497-A (GB)
Title: Surgical Prosthesis
Inventor: MEDELL IRVING BRIDGMAN
IPC: A61F2/06
Filed: 1967-10-18
Abstract: 1,183,497. Surgical prosthesis. ETHICON Inc. 18 Oct., 1967 [19 Oct., 1966], No. 47449/67. Heading A5R. A vascular or oesophageal prosthesis comprises an open mesh knitted, crocheted, braided or tulle tube made of tetrafluoroethylene polymer or polyethylene terephthalate on which a polypropylene monofilament is helically wound and united by fusion. Two monofilaments may be wound on the tube forming helices of opposite hands which intersect at intervals. The tube may be coated externally or both externally and internally with collagen or gelatin to render it impermeable to blood, bacteria and fluids. For application of the monofilament, the tube is placed on a mandrel covered with tetrafluoroethylene polymer and is removed from the mandrel after heating for 1 hour at 208‹C and subsequent cooling. Collagen is applied by coating or dipping in an aqueous dispersion of collagen fibrils.