baber/WOPTO huggingface dataset:
Patent GB-1075967-A (GB)
Title: Containers capable of accommodating variations in the volume of their contents
IPC: B65D79/02
Filed: 1964-11-10
Abstract: 1,075,967. Portable containers. MOSSI & GHISOLFI CONTENITORI ITALIA S.p.A. Nov. 10, 1964 [Nov. 15, 1963], No. 45782/64. Heading B8D. A container is formed with a laminated end wall in which an outer rigid sheet (1), Fig. 3, has one or more holes H or is of gas-pervious material, and an inner elastic sheet (2) is joined at its edges to the outer sheet (1), the construction enabling variations in the volume of the container contents to take place without the outer wall of the container being deformed. The inner sheet (2) is impermeable to the fluid contents of the container. The outer sheet may be of metal. The laminated end wall may have a central domed portion, or it may be corrugated, Figs. 4b-4c; or the sheet (2) only may be corrugated, Fig. 4d (not shown).
Patent GB-1115170-A (GB)
Title: Method for reinforcing sewn material
IPC: D05B1/26
Filed: 1966-10-14
Abstract: 1,115,170. Sewing machines. L. G. SIMJIAN. 14 Oct., 1966, No. 45935/66. Heading DIG. [Also in Division B5] A method of reinforcing a stitched seam comprises subjecting at least some of the areas of thread penetration to ultrasonic energy at a power level sufficient to cause the dissipated energy to soften the material and flow around the thread. It is stated that the method is particularly applicable to lightweight material woven of synthetic fibre, and to thermoplastic sheet material. In a sewing machine for carrying out the method, a rod 17 is resiliently secured by a clamp 18 to the needle bar 16. An electromagnet 20 surrounding rod 17 is energised with high frequency electrical energy from a generator 21. Rod 17 is positioned to the rear of needle 14 at a distance d of one or more multiples of stitch length, and its height is such that its lower end briefly contacts the work during maximum needle penetration. Said lower end is tubular and is slotted in the direction of the stitched seam. Rod 17 may be replaced by a rotary star wheel. The ultrasonic energy may be coupled directly to a metallic thread which is used instead of textile fibre thread.
Patent GB-1438104-A (GB)
IPC: A23L1/275
Filed: 1972-10-05
Abstract: 1438104 Colouring for food BEECHAM GROUP LTD 16 Aug 1973 38787/72 Heading A2B [Also in Divisions A5 C4 C5 and C6] The monoazo dye 1-(4-sulphophenylazo-2- naphthol-6, 8-disulphonic acid is used to colour edible compositions in orange shades.
Patent GB-1427416-A (GB)
Title: Process for the preparation of substituted benzimidazoles
IPC: C07D233/48
Filed: 1973-10-02
Abstract: 1427416 2-Benzimidazole carbamic acid esters HOECHST AG 2 Oct 1973 [14 Oct 1972] 45985/73 Heading C2C Alkyl or benzyl esters of 2-benzimidazole carbamic acid or of a 5- and/or 6-substituted 2-benzimidazole carbamic acid or salts thereof, are obtained by converting 2-amino-benzimidazoles with bases to their alkali-metal or alkaline-earth metal salts, reacting these salts with carbonic acid esters in the absence of water and, if desired, converting the salts of 2-benzimidazole carbamates obtained to the free esters by acidification.
Patent GB-1410592-A (GB)
Title: Controlled impedance devices
IPC: H03H11/46
Filed: 1971-10-04
Abstract: 1410592 Active variable impedances; companders DOLBY LABORATORIES Inc 19 Sept 1972 [4 Oct 1971] 46121/71 Headings H4R H3R and H3U In a variable impedance device, e.g. for use as a variable filter in a compressor or expander circuit, an amplifier A has a ladder network of series impedances Z11, Z12,...Zn and shunt impedances Z1, Z2, ... Zn connected between its input and output. The shunt impedances can be switched into or out of circuit by varying the control voltage applied,to the transistors Ql, Q2,...Qn, connected in series with the shunt impedance so as to vary the impedance Z presented at the amplifier input. The control voltage can be applied to the bases of transistors Q1 to Qn by connecting them to a ladder network, Fig. 3 (not shown). To provide a reactive impedance the ladder attenuator AT, Fig. 4, can be connected to the amplifier input via an emitter follower circuit and capacitive reactances Zb1 and Zb2. With Zsl 5 k# Zs2 50 k#, Zb1 = Zb2 = 1 ÁF, the circuit operates as a frequency dependent variable impedance with 1À5 Hz turnover frequency at minimum attenuation and the turnover frequency falling as attenuation increases. The control voltage can be obtained from the amplifier A output to provide a low frequency compressor or expander.
Patent GB-1531763-A (GB)
Title: Surface coatings
IPC: C08L1/00
Filed: 1975-11-07
Abstract: 1531763 Bituminous composition SCREG ROUTES ET TRAVAUX PUBLICS 7 Nov 1975 [8 Nov 1974] 46144/75 Heading C3N A coating composition comprises inorganic granulates coated with 4-12 wt. per cent, by weight of the granulates, of a 25-60‹ C. E.V.T. coal tar pitch, and with 5-30 wt. per cent, by weight of the coal tar pitch, of ground waste plastics material comprising polyvinyl chloride, said plastics material having a particle size of less than 10 mm. The waste polyvinyl chloride material may contain styrene-butadiene-acrylonitrile resin or polyethylene. The granulates may consist of a mixture of gravel and sand.
Patent GB-933517-A (GB)
Title: Improvements in the treatment of glass fibres
IPC: C03C25/26
Filed: 1961-12-27
Abstract: Glass fibres are treated with a composition comprising a polyvalent metal salt and a phenol, a phenolic acid or a mixture thereof, to improve their receptivity for synthetic resinous materials.  The polyvalent metal salt may be ferric chloride, ferrous sulphate, ferric sulphate, ferrous bromide, cobalt chloride, aluminium chloride or chromic chloride and the phenolic acid may be salicylic acid or parahydroxy benzoic acid.  The composition, which may be applied from an aqueous or organic solvent medium, may also contain a polymer, copolymer or heteropolymer of an acrylate, methacrylate, styrene, vinyl acetate, vinyl chloride, vinylidene chloride or butadiene, a lubricant, e.g. an amide formed from a mono- or dibasic fatty acid and a polyethylene amine and solubilized with acetic, methacrylic or acrylic acid, and polyvinyl pyrrolidone and may have a pH of 3-7. The composition may be applied to the fibres as they are drawn from the bushing and the fibres may subsequently be used to reinforce laminates and moulded articles made from polyester or epoxy resins. The laminating or moulding resins may contain a silane, e.g. vinyltriethoxy silane, mono- or di-methoxy vinyl silane, di- or trimethoxy allyl silane, di- or tri-ethoxy allyl silane, diallyl methyl ethoxy silane and silanes containing aryloxy and haloradicals.
Patent GB-993528-A (GB)
Title: Veterinary anthelmintic compositions comprising phosphoramidates
IPC: A61K31/66
Filed: 1961-12-27
Abstract: Veterinary anthelmintic compositions comprise a compound of general formula <FORM:0993528/A5-A6/1> wherein R represents a C1-4 alkyl radical, R1 represents a hydrogen atom or a C1-4 alkyl radical and Y represents a C1-5 alkyl radical dissolved in a mixture consisting essentially of a paraffin oil (phosphoramidate detoxicant component) and a phosphoramidate-solvent component selected from:-(i) one or more terpenes, (ii) one or more edible unsaturated aliphatic acids, (iii) one or more terpenes and one or more edible unsaturated aliphatic acids; any of these optionally also comprising either or both of one or more rosin acids and one or more water-insoluble esters of a long chain fatty acid with a polyhydric alcohol. Optionally, there may also be present one or more known liver fluke eradicating agents, e.g. CCl4, C2Cl6, C2Cl4F2.  Specified paraffin oils are medicinal grade paraffin oil and the material known as "Corvus" oil.  Specified terpenes are cineol, pinene, phellandrene, dipentene, terpinolene, cymene, a -terpineol, eucalyptus oil, eucalyptus gum solvent, eucalyptus terpene aldehyde fraction, wood turpentine and pine oil.  Specified unsaturated aliphatic acids are oleic, linoleic, ricinoleic and linolenic acids.  Rosin acids mentioned are those isolated from wood rosin, e.g. abietic, sapinic, pimaric, dihydroabietic and dehydroabietic acids and specified water-insoluble esters are glycerylmonooleate, -monoricinoleate and -dioleate and sorbitan monooleate.  Tall oil is also referred to as a component of the solvent component.  The compositions are preferably used as a drench or may be administered in capsules or feed-mixes or applied esternally.
Patent GB-1477718-A (GB)
Title: Apparatus for providing a measure of the intensity of light
IPC: G01J1/44
Filed: 1974-10-25
Abstract: 1477718 Bridge balance indicator DURST AG 25 Oct 1974 [26 Oct 1973] 46329/74 Heading G1U [Also in Division G2] The state of balance of a bridge 1, 2, 3, 4, Fig. 1, is indicated by two lamps 7, 8 both lamps either lighting simultaneously, as in Figs. 1 and 2 (not shown), or not lighting simultaneously, in a modification for which no circuit is provided, only when the bridge is balanced, to within limits set by the gain of an amplifier 5. In use, light, whose intensity is to be measured, falls on to a photo-resistor 1, and the bridge is rebalanced either by adjusting one of its arms, such as resistor 2, or by adjusting a shutter 9 in front of the photo-resistor 1. The lamps could be replaced by light emitting diodes, Fig. 2 (not shown). The arrangement is said to be of particular use in the field of photography.
Patent GB-1479678-A (GB)
Title: Automatic air vent
IPC: G05D16/12
Filed: 1974-10-28
Abstract: 1479678 Fluid-pressure servomotor systems INDUSTRIEELE MAATSCHAPPIJ ZUTPHEN BV 28 Oct 1974 46439/74 Heading G3P Excess air is vented from a liquid-filled system, such as a central-heating system, by providing a float 4 in a chamber 1 in which the liquid level is depressed when the air pressure rises to open a passage 12 leading to a piston 3 controlling a vent 13. The pressure in the chamber 1 is communicated by a passage 18 to the remote side of the piston 3 which moves to maintain equal fluid loads on its upper and lower faces. If leakage occurs across the lower member of a pair of seals 11, the piston 3 moves downwards to engage a pin 7 and open the passage 12 until the fluid loads are again equal. A spring-loaded piston (14), Fig. 2 (not shown) may be used in place of the differential piston 3.
Patent GB-1327077-A (GB)
Title: Rotary piston machines
IPC: F01C19/04
Filed: 1970-01-01
Abstract: 1327077 Rotary-piston machines ROBERT BOSCH GmbH 1 Oct 1970 [2 Oct 1969] 46653/70 Heading F1F A radial sealing strip in a rotary-piston machine having a piston with n sides planetarily rotatable within a housing chamber defined by an epitrochoidal surface having n-1 lobes, have a convexly curved surface 6 facing the chamber surface 2 which blends into the peripheral surface 7 of the piston 1, extensions 8 wedge-shaped in cross-section on that side of the strip facing the piston centre mounted in correspondingly configured grooves 10 at the piston corners and one or more radially directed bores 9 extending from the convexly curved surface to between the wedge-shaped extensions 8. There may be more than two wedgeshaped extensions with a bore or bores extending from the convexly curved surface to between each adjacent pair of wedge-shaped extensions. With the invention, the load acting on the base of the strip from the higher pressure working chamber 4 is less than would be the case with parallel-sided extensions with consequential less sealing force acting on the working chamber surface and less wear.
Patent GB-1495800-A (GB)
Title: Manufacture of monocrystalline gallium arsenide
IPC: C30B11/06
Filed: 1975-11-13
Abstract: 1495800 Gallium arsenide WACKER-CHEMITRONIC GES FUR ELEKTRONIKGRUNDSTOFFE mbH 13 Nov 1975 [14 Nov 1974] 46886/75 Heading C1A Monocrystalline gallium arsenide is made in a sealed and evacuated ampoule initially containing arsenic at one end and a boat containing gallium at the other end, one end of the boat also containing a seed crystal of gallium arsenide, by heating the arsenic source to its sublimation temperature, subsequently progressively heating zones of the gallium to a temperature above the melting point of gallium arsenide until all the gallium has been heated to such a temperature, allowing the molten gallium and vapourous arsenic to react to form molten gallium arsenide and subsequently progressively cooling the melt in the boat in zones commencing at the end containing the seed crystal. Typically the arsenic is heated to 610‹ C. and during such heating the gallium is maintained at a temperature of 600-950‹ C. When the arsenic has been sublimed the gallium is heated to a temperature of 1250‹ C. in stages, preferably using a multizone furnace, the time interval between heating adjacent zones of the furnace to the desired temperature being from 10 minutes-5 hours. The time taken to heat each zone to the desired temperature subsequent to heating the arsenic is typically 1-10 hours. The cooling and crystallization may be carried out by the horizontal bridgeman process or by reversal of the heating program. A preferred method of cooling is that described in Specification 1490639. The ampoule and boat are preferably of quartz but may be of graphite.
Patent GB-1015158-A (GB)
Title: Friction clutches
IPC: F16D13/71
Filed: 1962-12-12
Abstract: 1,015,158. Friction clutches. BORGWARNER CORPORATION. Dec. 12, 1962 [Jan. 12, 1962], No. 46972/62. Heading F2C. In a friction plate clutch for motor cars &c., comprising compression springs E abutting a cover plate D and biasing a pressure plate C towards a driven disc B accordingly clamped to a driving flywheel A, clutch disengement is effected by pivoting radially-arranged throwout levers 50 about knife-edged fulcra 45a at the sides of holes 45 through the cover plate so that the outer lever ends 57, lying in pockets formed in lugs 30 of the pressure plate, withdraw the latter against the bias of the springs. Strip springs 70 attached at their inner ends 72 to the levers 50 and at their outer ends lying in pockets 75 in the lugs 30 are held slightly bowed, so that their mid-portions 71c engage the sides of the holes 45 opposite to the fulcra 45a, to bias the levers &c. against their coacting parts. Shoulders 62a on the levers 50 extend over the edges of the fulcra 45a, to retain the levers against centrifugally induced radial movement. The outer ends 57 of the throwout levers 50 have bulges 58 engaging plane faces 59 of the lug pockets and are bifurcated at 50d to straddle the lugs 30.
Patent GB-1126887-A (GB)
Title: Selector switch
IPC: H01H19/63
Filed: 1966-10-20
Abstract: 1,126,887. Cam-operated,switches.. SQUARE D CO. 20 Oct., 1966. [15 Nov., 1965], No. 46972/66. Heading H1N. A rotary switch operator comprises a rotor 24 detachably carrying a knob 20, a cam carrier 35, a face cam 45 and an indexing rotor 50 co-operating with spring pressed balls 10. The rotor is mounted in a base 1 which carries switch units 5 with plungers B operable by the cam 45. The parts are arranged for rotation together by interengaging axially-directed lugs and recesses, and may be restored in one or two directions towards a central position by a return spring 65.
Patent GB-1418454-A (GB)
Title: Digital-to-analogue converters
IPC: G09G5/18
Filed: 1974-10-30
Abstract: 1418454 Digital - to - analogue conversion WESTERN ELECTRIC CO Inc 30 Oct 1974 [2 Nov 1973] 47049/74 Heading H3H [Also in Division G4] In digital-to-analogue conversion, the most significant bits of the digital input are loaded into a counter 12 and the least significant bits into a second counter 18 which is incremented by clock pulses at a rate sufficient to cause it to overflow before the arrival of the next word from source 10, the counter 12 being incremented by 1 at the time of occurrence of overflow in counter 18 whereby resistor network 23 produces an output voltage of level dependent on the M.S.B.s and having a stepped increment at a time dependent on the L.S.B.s. A low pass filter 40 having a cut-off at or below half the word rate smoothes out the steps. Counter 12 has one more position than there are M.S.B.s to allow incrementing even if all the M.S.B.s are 1s. Resistor values are given. In a modification, Fig. 3, not shown, a code converter (41) converts the output of counter 12 to thermometer code which is applied to a parallel equiweighted resistor summing network (23<SP>1</SP>). The resistors need only be of 10% tolerance. In a P.C.M. decoder with a segmented companding characteristic, Fig. 5, the 3 segment defining bits are loaded into counter 12<SP>1</SP>, the 4 position-within-segment bits into a second counter (not shown). The output of counter 12<SP>1</SP> is converted to thermometer code and applied via a polarity select circuit 56, 57, 58 controlled by the P.C.M. sign bit to a summing network 23<SP>11</SP> to give the required characteristic.
Patent GB-1117386-A (GB)
Title: Replaceable shoe for attachment to the lower end corner members of earth moving blades
IPC: E02F3/815
Filed: 1966-10-21
Abstract: 1,117,386. Grader blade-digging shoe. J. N. H. SKERRETT (D. K. Garthwaite). 21 Oct., 1966, No. 47112/66. Heading E1F. A digging shoe for a lower corner of a grader blade, the shoe being formed by two limbs disposed at right angles to one another and a specific section to permit of the shoe when fitted and welded to the corner to satisfactorily embrace and abut the corner.
Patent GB-1063243-A (GB)
Title: Improvements in or relating to masers
Inventor: MENZIES ALEXANDER CHARLES GEOR
IPC: H01S3/06
Filed: 1962-12-13
Abstract: 1,063,243. Lasers. HILGER & WATTS Ltd. Dec. 2, 1963 [Dec. 13, 1962], No. 47124/62. Heading H1C. The light-emitting end reflector of a solid or gaseous laser has a prismatic or conical form which normally gives complete internal reflection, the light output being obtained through a small facet orthogonal to the longitudinal axis of the active medium. The reflector may be a roof prism, Fig. 1, formed with a small lighttransmitting facet 12, or may be either a tetrahedral or a pyramidal prism, Figs. 2 and 3 (not shown), or a cone which is slightly truncated to provide the light-transmitting facet. In an application to a ruby laser, Fig. 4, comprising an active rod 40 and axenon flash tube 50 positioned at respective foci of an elliptical reflector casing 48, the active rod has both ends formed with prismatic or conical surfaces 44, 46, the output end additionally including a light-transmitting facet 42. Also shown is the power supply 52 for the flash tube, and a trigger pulse device 54 connected between one end of the tube and an ignition electrode 56. These circuits are of the usual form, Fig. 6 (not shown). A helium-neon laser is shown in Fig. 7 in which the active gas is enclosed in a silica tube 78 having its ends 80 positioned at the Brewster angle. The polarized emission is reflected completely at one end by a member 82 having a fully silvered face 82a, and is emitted from the other end which comprises a member 84 having prismatic or conical reflecting surfaces and a small light-transmitting facet.
Patent GB-1220659-A (GB)
Title: Butterfly valve
IPC: F16K1/226
Filed: 1969-09-25
Abstract: 1,220,659. Valves. DEZURIK CORP. 25 Sept., 1969 [26 Sept., 1968], No. 47282/69. Heading F2V. The valve disc 20 of a butterfly valve has the plane of its sealing surface axially offset by a distance A from the pivot axis and its centre laterally offset by a distance L from that axis so that it may co-operate with either of two regions 34, 35 of sealing contact, the regions being parallel and axially spaced by a distance 2A and being laterally offset by a distance 2L. The regions are formed as surfaces of revolution in a seat 36 of resilient material which is reinforced by a member 37 and provided with grooves 38 to improve the seal with adjacent pipe flanges. When one of the regions of sealing contact has become worn, the disc is forcibly turned through 180 degrees to bring the other region into use. A latching pin 19 with a trigger 18 is provided on an operating handle 17 for the valve.
Patent GB-1221210-A (GB)
Title: Thermoplastic moulding compositions containing polyesters
IPC: C08L67/02
Filed: 1968-10-07
Abstract: 1,221,210. Polyester based moulding compositions. FARBWERKE HOECHST A.G. 7 Oct., 1968 [10 Oct., 1967], No. 47401/68. Headings C3P and C3R. A moulding composition comprises, (a) a linear saturated polyester of an aromatic dicarboxylic acid and optionally up to 10% by weight of an aliphatic dicarboxylic acid, and a saturated aliphatic or cycloaliphatic diol and (b) 0.05 to 25% by wt. calculated on the total mixture. of a polymer of an ester of acrylic acid, methacrylic acid or ethacrylic acid, and a saturated aliphatic or cycloaliphatic alcohol containing 1-30 carbon atoms. Polyesters specified are polyethylene terephthalate and polycyclohexane - 1,4 - dimethylol terephthalate, and can contain in addition to terephthalic acid, units of isophthalic, naphthalene-2,6- dicarboxylic and adipic acids, and in addition to ethylene glycol, units of 1,4-butanediol and neopentyl glycol. The polymer (b) may be a homopolymer or copolymer or a mixture of polymers and has a molecular weight of at least 3000, those specified being poly-2-ethylhexylacrylate, poly - 3 - ethylhexylacrylate and poly-n-octyl acrylate. Nucleating agents such as calcium carbonate, aluminium silicate, TiO 2 , talc and soot having a particle size of less than 2 microns may be added at various stages of making the composition. The particulate composition is preferred to have a moisture content of less than 0.01% by wt., and for this purpose the particles are coated with a water repellent paraffin wax or other wax.
Patent GB-1526759-A (GB)
Title: Device for the detection and/or frequency tracking of a signal in presence of noise
IPC: G01S13/58
Filed: 1975-11-20
Abstract: 1526759 Radar; active filter INTERNATIONAL STANDARD ELECTRIC CORP 20 Nov 1975 [22 Nov 1974] 47818/75 Headings H4D, H3U and H4L To detect and/or track the frequency of a signal whose spectrum is discontinuous over a given range, embedded in noise whose spectrum is continuous and uniform over that range, the noiseembedded signal is filtered to limit its bandwidth to that range, the filtered signal is frequency-converted using a mixer and voltage-controlled oscillator (VCO), the converted signal is applied to a bank of (N+ 1) band-pass filters having adjacent pass bands all of the same width, the filter outputs are amplitude-weighted and the weighted signals are summed, the weighting factor for the k<SP>th</SP> filter being given by where 0#k#N Noise and desired signals with the specified spectra should give zero and finite summation results, respectively. In the Fig. 6 system, for range-tracking and frequency-tracking in a Doppler monopulse radar, early and late range gates 20, 30 are opened by gate pulse generator 40 within each radar p.r.p. to feed radar video signals through band-limiting filters 21, 31 to mixers 22, 32 which also receive the output of VCO 41. Filters 23-25 and 33-35, passing bands Fl, F2, F3, F2, F3, F4, respectively, receive the mixer signals and the filtered signals are weighted at 26-28, 36-38 by factors +1, -2, +1, +1, -2, + 1 respectively. Summation circuits 29, 39 combine the weighted signals, and the difference between the two summation results is derived in circuit 43 to provide an error signal for retroactively controlling VCO 41 to track the frequency of the radar video signal. Circuit 42 sums the unweighted outputs of filters 24, 25, sums the unweighted outputs of filters 33, 34, and derives the difference between the two sums to provide a second error signal for retroactively controlling generator 40 to provide range-tracking. In a further radar system (Fig. 2, not shown) a plurality of range gates are used to cover an entire distance range of interest, each gate being associated with a respective combination of mixer, filter bank, weighting network and summation circuit.