baber/WOPTO huggingface dataset:
Patent GB-1498628-A (GB)
Title: Polymer materials
IPC: B29C55/00
Filed: 1974-12-06
Abstract: 1498628 High modulus films and fibres NATIONAL RESEARCH DEVELOPMENT CORP 6 Dec 1974 [3 Oct 1973 5 March 1974 2 Oct 1974] 52644/74 52645/74 and 52647/74 Heading B5B [Also in Division C3] Polymer materials of high modulus, e.g. a Young's modulus greater than 3 Î 10<SP>10</SP> N/m<SP>2</SP>, are obtained by subjecting a crystallizable polymer of weight average molecular weight greater than 300,000 to a thermal treatment such that the possibility that a given molecular chain is incorporated in more than one crystal lamella is substantially reduced and is then attenuated at a rate such that the deformation ratio is at least 15. The subject matter of prior Specifications 1,469,256 and 1,480,479 is disclaimed. Suitable polymers are polyethylene, especially high density, polypropylene, ethylene/ propylene block polymers, polyethylene oxide, polyoxymethylene, polyamides, polyesters and fluorinated polymers such as PTFE and polychlorotrifluoroethylene. The thermal treatment may comprise (1) cooling the polymer from at or above its melting point at a rate such that the desired crystal structure is obtained, e.g. less than 40 C. per minute; (2) cooling from at or above its melting point to below the crystallization point followed by quenching to ambient temperature, e.g. cooling at 1-15 C. per min. and after reaching 5-20 C. below the crystallization point quenching at a rate less than 100,000 C. per minute; (3) rapidly cooling or quenching the polymer from at or above its melting point to close to or at its crystallization point and holding it for a time sufficient for crystallization to occur, e.g. for 0À5-10 minutes within 15 C. of the crystallization temperature preferably followed by quenching to ambient temperature or (4) cooling very rapidly from at or above its melting point to well below its crystallization point to achieve low crystallinity, e.g. at a rate above 1,000 C. per minute to ambient temperature or below preferably followed by reheating to increase the size of the crystal regions. The preferred attenuation process comprises drawing the polymer to a high draw ratio at a speed and temperature sufficient to produce alignment of the molecules by inducing the required plastic deformation over and above any extension which may be produced by flow drawing. Slow drawing rates are preferred, e.g. between relatively movable clamping means at 1-20 cms per minute at at least 40 C. below the melting point or on a draw frame at 30-150 cms/minute at 5-20 C. below the melting point. The material is preferably in film or fibre form before drawing and has a thickness less than 1 mm.
Patent GB-1059068-A (GB)
Title: Improvements in or relating to cabin-like protective guard structures for tractors
IPC: B60R21/13
Filed: 1965-12-11
Abstract: 1,059,068. Protecting guards. J. E. OTTOSSON. Dec. 11, 1965, No. 52715/65. Heading B7B. A tractor protecting guard 10- 14 has pendulum-type extensions 15, 16 which swing outwardly to engage the ground to prevent overturning at an earlier stage. Automatic locking means serve to retain the extensions in line with the transverse members 13, 14.
Patent GB-1088920-A (GB)
Title: Improvements in or relating to laser apparatus
IPC: H01S3/06
Filed: 1965-12-13
Abstract: 1,088,920. Lasers. AMERICAN OPTICAL CO. Dec. 13, 1965 [Dec. 16, 1964], No. 52799/65. Heading H1C. In a laser in which the non-uniform distribution of heat from a light pumping source causes thermal gradients and stress differences through an active medium, the distortion of the wavefront emitted by the laser is reduced by providing two axially-aligned laser rods 26, 38, Fig. 3, which are separated by a passive 90-degree rotator. The effect of heating any one of the circular laser rods shown is to produce a radial temperature gradient which causes a progressive reduction of the refractive index outwardly from the longitudinal axis. Thus for light 30 emitted by one laser rod the wavefront would be of the concave form 34 shown. A further effect of heating is to establish a radial tension (16), (18), Fig. 1A (not shown) and a tangential compression (20), (22) at all locations in the rod, the stresses varying with distance from the longitudinal axis as shown in Fig. 2 with the variation of tangential compression being the most pronounced. As stress birefringence is caused through the rod, light polarized tangentially will encounter a different refractive index to light polarized radially, and the respective emergent wavefronts will be of the convex form shown at 28 and 32 respectively. The purpose of the 90-degree rotator is to change the tangential light vector into a radial vector and vice versa so that after passing through the second laser rod 38 the two components have a common convex wavefront 31. This wavefront may completely compensate for the concave wavefront 34 due to thermal gradient so as to give a plane wavefront 33. Otherwise partial compensation is obtained which is finally corrected by a lens (not shown). Ruby or neodynium laser rods may be used, while the rotator may be a section of quartz crystal cut perpendicular to the optic axis, a liquid cell of sugar solution or turpentine, a pair of ¢-wave plates with an angle of 45 degrees between their fast axes or a Faraday rotator. Oscillator and amplifier embodiments are described, Figs. 4 to 6 (not shown), the oscillator having plane external mirrors (44), (46). The two laser rods may have a common helical flask tube or separate tubes. An amplifier using four separately-pumped laser rods is disclosed.
Patent GB-1404218-A (GB)
Title: Electrophotographic apparatus using a photosensitive member with electrically insulating layer
IPC: G03G5/043
Filed: 1972-11-16
Abstract: 1404218 Electro-photographic element; copying apparatus MITSUBISHI DENKI KK 16 Nov 1972 [16 Nov 1971] 53009/72 Headings G2C and G2H An electro-photographic element comprises a support having a conductive surface, a photoconductive layer on the surface and photo-sensitive to a first wavelength range of radiation and a layer of a photo-conductive insulating material on the photo-conductive layer which is transmissive to the first range but photo-sensitive to a second wavelength range of radiation outside the first range. The conductive surface may be vapour-deposited Al or a carbon coating or the support may be of Al. The photo-conductive layer is preferably sensitive to visible radiation and may be CdS doped with Cu and Cl in a vinyl, acrylic or cellulose resin. Alternatively CdS, Se+Te, ZnO, CdS+ZnS, CdS+CdSe or polyvinylcarbazole may be used. The photo-conductive insulating layer is preferably sensitive to U.V. radiation and may be polyvinyl carbazole optionally sensitized with picric acid, polyvinyl pyrene, polyvinyl anthracene, ZnO, ZnS, or ZnS+CdS. An electro-photographic apparatus comprises the element together with means for imagewise irradiating at a first wavelength, means for simultaneously charging to form an electrostatic latent image and means for irradiating at a second wavelength thereby to erase the image. In an embodiment, an electro-photographic element 10 is exposed to a visible image 30 while a corona charger 34 is moved A across its surface. The element is moved B to a transfer position past an incandescent lamp 36 which erases residual charge on the element but increases the stability of the latent image. The image is transferred to a dielectric-coated tape 38 and wet developed at 44. The developed image is dried at 46. The element 10 is moved D back for re-use past a U.V. lamp 50 which removes any residual latent image. In an alternative embodiment, Fig. 4 (not shown) the element 10 may be moved (F) beneath a corona charger (72) and light source (70) to charge the element to the opposite polarity before charging by corona 34. In another embodiment, Fig. 3 (not shown), a cylindrical element (60) is used and the latent image is developed on the cylinder by electroscopic particles (66) prior to transfer to a dielectric-coated sheet.
Patent GB-1220354-A (GB)
Title: Model building and kit therefor
Inventor: EDWARDS PETER WILLIAM
IPC: A63H33/04
Filed: 1967-11-24
Abstract: 1,220,354. Constructional set. ASHTON CONTAINERS Ltd. 6 Nov., 1968 [24 Nov., 1967], No. 53502/67. Heading A6S. A toy constructional set comprises a box, which may be used as a base, and a number of interengageable building components made of sheet material which have co-operable slots. The box 10 comprises a tray having a number of hollow blocks 11 and 12 therewith which define a series of slots for the insertion of the sheet building components 14. A number of the components contain slots 31 into which may be inserted a roof member 32.
Patent GB-1496156-A (GB)
Title: 2-chloropropionic acid and its derivatives
IPC: C07C59/66
Filed: 1974-12-11
Abstract: 1496156 3-Aryl-2-halo-propionic acid derivatives TAKEDA YAKUHIN KOGYO KK 11 Dec 1974 [19 April 1974 9 Oct 1974] 53566/74 Heading C2C Novel compounds I (in which R<SP>1</SP> is H, 1-5C alkyl, halo, OH, CF 3  or 1-4C alkoxy; R<SP>2</SP> and R<SP>3</SP> are H or 1-5C alkyl; X is halo; Y is -O-, 1-6C alkylenethio, 1-6C alkyleneoxy, or 1-6C alkylenedioxy; Z is COOH or a group convertible thereto (e.g. ester, nitrile, amide or aldehyde groups) and n is 1 or 2) and pharmaceutically acceptable salts thereof are prepared by reaction of a compound II (in which R<SP>4</SP> is as R<SP>1</SP> or is -N 2 <SP>+</SP>X<SP>-</SP>) with a compound III Intermediates isolated are 4-(2-phenoxyethyl)- acetanilide; 4-(2-phenoxyethyl)aniline hydrochloride; 4- (1 -phenyl-2-methylpropyloxy)- aniline hydrochloride; 4-acetamidophenoxy-4- chlorophenyl methane; 4-(4-chlorobenzyloxy)- aniline; 4 - (4 - chlorophenoxymethyl)aniline; 4 - (3 - trifluoromethylphenoxy)nitrobenzene and 4 - (3 - trifluoromethylphenoxy)aniline, all of which are prepared by known methods. Pharmaceutical compositions having hypolipidemic, hypoglycemic and other activities comprise a compound I or a suitable salt together with a carrier or diluent.
Patent GB-1380564-A (GB)
Title: Chimney revolving crane for cowpers area of a blast-furnace
IPC: C21B9/00
Filed: 1971-11-19
Abstract: 1380564 Blast furnace installation J WIECZOREK 19 Nov 1971 [23 Nov 1970] 53855/71 Heading C7D [Also in Division B8] The hot blast system of a blast furnace is provided with a revolving repair and maintenance crane mounted on the chimney at a level above the stoves. As illustrated the crane comprises a double girder 12 mounted on rings 2a secured to the chimney, and trolleys 20 which may be  coupled together or operated independently. A counterweight 13 comprises one or two water tanks 16. The crane when not in use may be anchored to the blast furnace elevator 4 or to the top of one of the stoves 3.
Patent GB-1376938-A (GB)
Title: Composite dielectric resonator
IPC: H01P1/30
Filed: 1971-11-22
Abstract: 1376938 Dielectric resonators NIPPON HOSO KYOKAI 22 Nov 1971 [26 Nov 1970] 54069/71 Heading H1W A dielectric resonator comprises two bodies having temperature coefficients of relative dielectric constant of opposite sign and an interface parallel with the electric vector of the e-m field, whereby changes of resonant frequency with temperature are compensated. As shown (Fig. 15), the resonator consists of discs or rectangular blocks 81, 83 respectively of TiO 2  and LiNbO 3  supported on an element 85 of low dielectric constant between the ground conductors 73, 75 of a triplate strip-line 71, 73, 75. The resonator may support either the EH 11  or HE 11  wave modes, both of which have electric fields parallel to the interface between the bodies 81, 83. It is also possible to use a resonator in the form of a disc or elongated cylinder comprising inner and outer concentric bodies having the required properties, but such resonators cannot effectively utilize the HE 11  mode since the electric field of this mode does not lie parallel to the cylindrical interface between the two bodies. The bodies 81, 83 may comprise single crystals -preferably arranged such that their optical axes lie parallel to the interface. Since they have dielectric anisotropy, the dielectric constant measured in a direction parallel to the optical axis differs from that measured normal to this axis. Hence the resbnator may be turned by adjusting the angle between the optical axes of the bodies. For the same purpose, a thin, rotatable disc made of the material of one of the bodies may be mounted on the resonator. Tuning may also be accomplished by means of metallic screws 91, 93 which extend into the fringe field of the resonator. These affect the distribution of stored energy between the electric and magnetic fields within the bodies to which they are respectively adjacent. Hence the contribution of each of the bodies to the temperature-compensating effect may be varied and since these are of opposite sign, a zero temperature coefficient may be obtained for the whole resonator. In the modification of Fig. 20, the interface between bodies 101, 103 forming the resonator lies parallel to the short sides of a rectangular waveguide 100. The resonator is supported on a ceramic element 111 of low dielectric constant and is tuned by conductive plugs 113, 115. Both the constructions shown provide bandstop filters. In order to form a strip-line bandpass filter, the resonator is placed in the coupling region between adjacent, parallel ends of two short-circuited strip-lines (Figs. 21, 22, not shown). In order to provide a waveguide band-pass filter, the resonator is placed in a length of cut-off waveguide to which input and output circuits are coupled.
Patent GB-1082431-A (GB)
Title: A time-delay relay
IPC: G04F3/06
Filed: 1965-12-22
Abstract: 1,082,431. Time switches. SIEMENSSCHUCKERTWERKE A.G. Dec. 22, 1965 [Dec. 23, 1964], No. 54473/65. Heading H2B. In a time-delay relay of the kind wherein a synchronous motor 1 when energized is coupled to drive a shaft 21 from a preset initial angular position to a position where it causes operation of contacts 32, 33 and, upon de-energization, is uncoupled to allow a spring 25 to restore the shaft to the initial position, the drive includes two mutually co-operating complementary " snail " wheels 22, 23 such that the speed of the shaft 21 increases as it approaches the contact-operating position. This enables a circular scale 29 to be more open at its lower end, for greater accuracy of setting an adjustable abutment 28 which co-operates with a pointer 24 on the shaft 21 to determine its preset initial angular position. The " snail " wheels 22, 23 may be toothed gears or friction wheels with or without an interconnecting band having its ends secured to the respective peripheries. The coupling means is operated by a magnetic plate 15 attracted to the motor frame when the latter is energized, or a separate solenoid may be provided.
Patent GB-1308484-A (GB)
Title: Continuous annealing process of cold reduced steel strip for  drawing
IPC: C21D1/20
Filed: 1970-11-16
Abstract: 1308484 Annealing steel strip NIPPON KOKAN KK 16 Nov 1970 [14 Nov 1969 24 Dec 1969] 54499/70 Heading C7A Cold rolled strip containing not more than 0À08% C and not more that 0À003% soluble nitrogen is continuously annealed by heating to a temperature between A 1  and 800‹C, soaking, cooling to below 500‹C at more than 50‹C/sec. and holding between 300‹ and 500‹C for at least 10 seconds. The process is also applicable to steel containing not more that 0À08%C and 0À01-0À06% Al which has been coiled at not less than 630‹C after hot rolling.
Patent GB-1479158-A (GB)
Title: Furniture
IPC: A47C4/02
Filed: 1974-12-18
Abstract: 1479158 Chairs with detachable parts; chairs combined with tables; chairs connected in rows A E BASFORD and P R BASFORD 13 Feb 1976 [18 Dec 1974] 54562/74 Headings A4H A4J and A4U The side members of a seat component of a chair are provided with slots 6, 7, tongues 11 on the side members 10 of a backrest 9 being releasably engaged in the rear slots 6 and tongues 15 on side components 13 being releasably engaged in the front slots 7. The side components may comprise an armrest 13, a table 27 or a connector 25 for connecting seat components in side by side relationship. Removal of the armrest by lifting the front end of the armrest is prevented by engagement of a convex edge 22 on the side member with a concave edge 20 on the armrest. The tongues 11 and slots 6 are so curved that removal of the backrest is prevented when the armrests are in place. A table 27 may comprise a cantilever top 28 supported by one tongue 29. Alternatively a table top for connecting two seat components in side by side relationship is provided with two vertical spaced tongues which may be parallel or which may be at an angle to each other. When at an angle, the seat components connected thereby are at an angle. Seating components may be interconnected by a connector 25 comprising a pair of tongues 26 to form a settee, armrests being provided on each end of the settee.
Patent GB-1077370-A (GB)
Title: Bucket-wheel loading device
IPC: B65G65/20
Filed: 1965-12-23
Abstract: 1,077,370. Bucket wheel reclaimers for piled material. BETEILIGUNGS - UND PATENTVERWALTUNGS G.m.b.H. Dec. 23, 1965 [Dec. 24, 1964], No. 54668/65. Heading B8E. [Also in Division E1] In a bucket wheel reclaimer a bucket wheelsupporting boom is mounted on to extend sideways and forwards of a mobile chassis and carries at the leading end a bucket wheel that is disposed forwards of and at such an angle to the boom as to be at right-angles to the direction of advance of the chassis. Supported from the other end of the boom is a bridging conveyer discharging into a statically located conveyer. The boom may be vertically swing- able.
Patent GB-1316719-A (GB)
Title: Method of testing a conveyor belt for the presence of longitudinal tears
IPC: B65G43/02
Filed: 1971-11-29
Abstract: 1316719 Indicating tears in conveyer belts CLOUTH GUMMIWERKE AG 29 Nov 1971 [10 Dec 1970] 55322/71 Heading B8A [Also in Division H4] A conveyer belt is tested for longitudinal tears by moving it past a device responsive to noise due to a tear to trigger the production of an electrical pulse. The device may comprise directional microphones arranged above and below the belt and connected to circuitry preprogrammed with the expected noises due to tears, which compares continuously the incoming and stored noises and responds if they match. Transversely-disposed inserts may be incorporated in the belt to enhance the noise due to a longitudinal tear.
Patent GB-1407068-A (GB)
Title: Piezo electric transducer
IPC: H01L41/00
Filed: 1972-12-01
Abstract: 1407068 Piezo-electric resonators LICENTIA PATENT-VERWALTUNGS GmbH 1 Dec 1972 [2 Dec 1971] 55622/72 Heading H1E [Also in Division H3] The input and/or output transducers for a bending mode electro-mechanical filter comprising a plurality of bending mode resonators interconnected by coupling elements V, comprise metal bodies K 1 , K 2 , Fig. 1; K 3 , K 4 , K 5  Figs. 2-4 sandwiching one or more piezoelectric plates P; P 1 , P 2  bounded at their sides by conducting coatings to which the bodies are soldered, each plate being polarized in opposed senses on either side of the neutral plane of the arrangement, so that the applied driving voltage leads to bending oscillations, or vice-versa. In Fig. 2, bodies K 3 , K 5  are earthed via the mounting elements and support the coupling elements. In Figs. 3 and 4 the body K 4  is earthed via central coupling element V, and the A.C. input, or output, fed via the mounting elements, is balanced with respect to earth. In Fig. 4, there are two nodes of oscillation between the plates P 1 , P 2 , body K 4  being earthed to a baseplate (not shown). Filters can be made to convert a balanced input signal to an unbalanced output, or vice-versa, using the constructions of Figs. 3, 4.
Patent GB-1184280-A (GB)
Title: Method and apparatus for Sleeving a Button Shank
Inventor: HOFE EUGENE FRANKLIN
IPC: D05B3/14
Filed: 1968-11-25
Abstract: 1,184,280. Sewing machines. LONDON TOWN MFG. CO. 25 Nov., 1968, No. 55740/68. Heading D1G. In a button sewing machine an attachment is provided which applies an expansible shanking collar between the button and the fabric and comprises two upstanding fingers 142, 154 which are together as in Fig. 6 to receive the shanking collar 254 and are moved apart to allow the button to be sewn to the fabric through the shanking collar. As shown in Fig. 10 the fingers 142, 154 act as a support for the button and stretch the shanking collar to allow the needle 46 to pass therethrough to sew the button place. When the fingers are removed the collar 254 returns to grip the threads 264. One finger 142 is fixed and the other 154 is moved by an electromagnet axially of the rod 150 under push button control. The whole collar expanding attachment is pivotally mounted on the sewing machine base.
Patent GB-1415187-A (GB)
Title: Induction heating coils
IPC: H05B6/02
Filed: 1972-12-04
Abstract: 1415187 Induction coil SIEMENS AG 4 Dec 1972 [3 Dec 1971] 55965/72 Heading H5H [Also in Division B8] In order to reduce the heating effect of an induction coil (Fig. 1) on articles 3 passing beneath it, at the entrance and exit regions, tubular metallic shields 12, 13 surround the turns at the respective regions, the shield being welded or brazed to one of the induction coil turns 6 so as to provide a reduced field from that turn and completely shield the other turn 7. Internal cooling of the coils allows beat from the shield to be disipated via the weld. The shield may be filled with an insulating material and the total structure embedded in plastics to form a plate. The turn 6a connected to the shield may be located outside the shield (Fig. 3) and the turns and shield may be of rectangular or other cross-section (Fig. 5). Additional turns may be provided outside the shield, and these may be offset with respect to the centre line of the main coil, e.g. 7a (Fig. 5). The articles may be contained with laminate cardboard, foil, and thermosetting plastic layer lids which are heat sealed by the induction coil. The coil may be made of water cooled copper tubes and the shields of copper, brass, or aluminium.
Patent GB-1490699-A (GB)
Title: Prefabricated building structures capable of incorporating electrical wiring
IPC: E04B2/58
Filed: 1973-12-05
Abstract: 1490699 Wiring in walls DOMINION FOUNDRIES & STEEL Ltd 4 Dec 1974 [5 Dec 1973] 56377/73 Heading E1A The subject matter of this Specification is identical with that described in Specification 1490698, but the claims are concerned with the provision of the wiring duct 58 in the wall.
Patent GB-1235635-A (GB)
Title: Compositions suitable for administration to poultry
IPC: A23K20/137
Filed: 1969-11-20
Abstract: 1,235,635. Composition for treating poultry. F. HOFFMANN-LA ROCHE & CO. A.G. 20 Nov., 1969 [27 Nov., 1968], No. 56794/69. Heading A5B. A composition suitable for administration to poultry contains as active ingredients a mixture of (1) 4-sulphanilamido-2,6-dimethoxypyrimidine or a physiologically acceptable salt thereof, (II) 2,4-diamino-5-(3,4-dimethoxybenzyl)-pyrimidine or a physiologically acceptable salt thereof and (III) 2,4-diamino-5-(4- chlorophenyl)-6-ethyl-pyrimidine or a physiologically acceptable salt thereof. The composition may have a diluent or carrier present and may be in the form of a concentrate or an animal feed.
Patent GB-1453623-A (GB)
Title: Geneva mechanism
IPC: F16H27/06
Filed: 1972-09-13
Abstract: 1453623 Geneva mechanism A CAMPTON & SONS CO Ltd 10 Dec 1973 [13 Sept 1972] 57015/73 Heading F2Q A Geneva mechanism comprises a member 14 secured to a driving shaft 11 and carrying upper and lower rollers 17, 18 which are adapted to engage radial slots 25, 26 in an upper follower member 24 and radial slots 29, 30 in a lower follower member 28, the members 24, 28 being secured to an output shaft 20. The rollers 17, 18 are mounted on arcuate carriers 15, 16 which are adapted to engage arcuate recesses 27, 31 in the follower members 24, 28.