baber/WOPTO huggingface dataset:
Patent GB-1136430-A (GB)
Title: Pulse-width modulation circuit
IPC: H03K7/08
Filed: 1966-12-20
Abstract: 1,136,430. Pulse modulation circuits; transistor pulse oscillators. P. R. MALLORY & CO. Inc. 20 Dec., 1966 [12 Jan., 1966], No. 56930/66. Headings H3T and H4L. In a circuit for varying the duty-cycle while maintaining constant the repetition rate of the output waveform of a multivibrator 22, 23, Fig. 1, the input signal is supplied to a differential amplifier 11 providing oppositely phased outputs which via diodes 13, 14 control the charging time of capacitors 20, 21 respectively. Alternatively the respective outputs of the amplifier may be supplied to the collectors of the multivibrator transistors, Fig. 2 (not shown). In a further arrangement, Fig. 3, the outputs of the differential amplifier 46 are supplied to the bases of transistors 50, 51 respectively. Assuming that transistor 43 of trigger pair 43, 44 is non-conducting the capacitor 64 will charge via transistor 50 to a level determined by the output of amplifier 46 until transistors 54, 57 conduct. At this time transistor 43 becomes conductive due to the slow linear discharge of capacitor 67 via transistor 69 rendering transis- 60, 62 non-conductive, and the charge voltage is then removed from capacitor 64 which discharges slowly via a transistor 65. Transistor 44 being non-conducting, the capacitor 67 is charged via transistor 51 and the cycle is repeated.
Patent GB-1144648-A (GB)
Title: Improvements in or relating to self-threading tape rolls
IPC: G11B15/29
Filed: 1966-08-10
Abstract: 1,144,648. Record-tape rolls. NEWELL ASSOCIATES Inc. 10 Aug., 1966 [17 Aug., 1965], No. 57027/67. Divided out of 1,144,647. Heading G5R. The outermost convolution of a tape roll includes a leader portion 77 carrying a narrower adhesive strip which adheres to the next adjacent convolution but leaves an unadhered tab at the outer end of the roll. As described the roll is self-supporting, as described in Specification 1,144,650, and is intended for use with the selfthreading tape transport described in Specification 1,144,649 which forms part of the apparatus described in Specification 1,144,647.
Patent GB-572492-A (GB)
Abstract: 572,492. Electromagnetic ammeters and voltmeters. FERRANTI., Ltd., and EASTON, H. Jan. 27, 1944, No. 1544. [Class 37] [Also in Group XXXV] The permanent magnet for a moving coil instrument or relay comprises two straight permanent magnet members of high coercive force inclined at an angle, together with a single-piece yoke and opposed polepieces of magnetic material secured to the ends of these members. Two similar cubical blocks 1, cast from a material such as alnico having a coercive force greater than about 250 oersted, form the permanent magnet members. They are joined by a castiron yoke having a straight cross-piece 2 and limbs 3 inclined at an obtuse angle thereto. Castiron pole-pieces 4 are provided adjacent to the free ends of the blocks 1, the whole being held together by non-magnetic screws 5. The yoke may alternatively be of U or V shape and may be made from magnetic material other than castiron. The members 3, 4, 5 may be secured together by welding or brazing or by brass clamps instead of by screws.
Patent GB-1411137-A (GB)
Title: Process for the preparation of perfluoroalkyl iodides
IPC: C07C67/00
Filed: 1972-12-13
Abstract: 1411137 Perfluoroalkyl iodides HOECHST AG 13 Dec 1972 [24 Dec 1971] 57466/72 Heading C2C Perfluoroalkyl iodides of the general formula C 2 F 5 (CF 2 -F 2 ) n I in which n is an integer of 1 to 10 are obtained by reacting CF 2  = CF 2  with C 2 F 5 (CF 2 -CF 2 ) x I in which x is 0 or an integer of 1 to 9 in the presence of a catalyst of general formula (C m F 2m+1 COO) 2  in which m is an integer from 2 to 10. The reaction is preferably performed at 25-65‹ C. at a pressure of normal to 8 atmosphere gauge using 0.02-0.7% by weight of catalyst based on the weight of telogen dissolved in telogen for ease of addition to the reaction mixture.
Patent GB-1144950-A (GB)
Title: Improvements in or relating to the conversion of starch
IPC: C12P19/16
Filed: 1967-12-22
Abstract: 1,144,950. High maltose content starch conversion products. CORN PRODUCTS CO. 22 Dec., 1967 [27 Dec., 1966], No. 58544/67. Heading C2C. [Also in Division C3] High-maltose starch conversion products are prepared by subjecting partially hydrolysed starch, having a D.E. not exceeding about 20 with a maltogenic enzyme preparation and a pullulanase (dextrin alpha 1-6 glucosidase) enzyme preparation used simultaneously or sequentially, the product having a D.E. of at least about 45, a maltose content of at least 50%, and yeast fermentables content of at least 80%. Specified maltogenic enzymes are Bacillus polymyxa amylase and malt diastase.
Patent GB-1416340-A (GB)
Title: Fillers for thermoplastic material compositions
IPC: C09C3/00
Filed: 1972-12-20
Abstract: 1416340 Surface treated fillers ASAHI KASEI KOGYO. KK 20 Dec 1972 [20 Dec 1971 (5) 5 April 1972 18 April 1972 16 Oct 1972] 58685/72 Heading C1A [Also in Division C3] One or more carbonates (including basic carbonates), hydroxides or oxides (including hydrates thereof) of beryllium, magnesium, calcium, strontium, barium, zinc, cadmium or aluminium in powder form, having a number average particle diameter of 0À01-50 Á, a maximum particle diameter of 100 Á and not more than 2% by weight of absorbed water is surface coated by being reacted with at least one aliphatic carboxylic acid which may have aromatic or heterocyclic substitution, or cycloaliphatic acid, these acids containing 1-2 ethylenic or cycloethylenic double bonds, 1-3 carboxylic groups and 3-11 carbon atoms and used in amounts of 0À05-20% by weight of the inorganic material. Reaction is effected with stirring at below the decomposition temperature of the carboxylic acid, in the absence of a radical generator and substantial absence of liquid water; liquid water of reaction and any CO 2  evolved are removed during reaction. Certain organic solvents may be present. The process may be effected at reduced, ordinary or elevated pressure and the acid may be introduced in vapour form. Examples 1, 4, 5, 9, 10, 14 and 25 describe the treatment of CaCO 3 , Example 11 of MgO, Example 12 of Al(OH) 3  and Example 3 includes most of the specified inorganic reagents. The exemplified acids are acrylic, methacrylic, α-ethyl acrylic, α-chloro acrylic, crotonic, sorbic, maleic, itaconic, vinyl acetic, vinylglycolic, angelic and styrylacrylic ; others are listed. The products are used as fillers for thermoplastic materials (see Division C3).
Patent GB-1200320-A (GB)
Title: Cable sealing glands
Inventor: TAYLOR GORDON AUSTIN
IPC: H01B17/30
Filed: 1967-12-29
Abstract: 1,200,320. Cables. AUSTIN TAYLOR ELECTRICAL Ltd. 11 Nov., 1968 [29 Dec., 1967], No. 59056/67. Heading H1A. [Also in Division H2] In a method of introducing gas into a cable the inner sheath 24 is formed with an aperture 22 and is covered by a cup 10 with a valve 12 and elbow 14 provided for the passage of the gas. The cup is sealed to the sheath, which may be plastics or lead, at the lower end and is made gas-tight at the upper end by means of a diaphragm 16 and O-ring 18, the space above 16 being filled with resin. Instead of 16 and 18 a sealing plug, pre-cast on the cable end before the final positioning of the cup, may be used.
Patent GB-1368009-A (GB)
Title: Astable multivibrators
IPC: H03K3/354
Filed: 1972-12-21
Abstract: 1368009 Astable multivibrator TOKYO SHIBAURA ELECTRIC CO Ltd 21 Dec 1972 59080/72 Heading H3T An astable multivibrator comprises an odd number and at least three cascade connected inverters 10, 20, 30 each employing IGFETS of either the same channel or complementary channel conductivity types, a resistor 41 connected between the input of the first inverter 10 and the output of the final inverter 30 and a capacitor 42 connected between the input of the final inverter 30 and the input of the first inverter 10. Each inverter stage may include a pair of IGFETS of complementary channel conductivity type or a pair of IGFETs of the same channel conductivity type. In one state of the operation, a potential substantially equal to the supply potential V DD  appears at inputs 13, 33 so that transistors 12, 21 and 32 are in their saturated conducting states while transistors 11, 22 and 31 are off. Capacitor 42 charges up in one direction until the charging voltage appearing at input 13 exceeds the threshold voltage of inverter 10 so that the conducting states of the transistors are interchanged. The capacitor is quickly discharged and as it charges up in the opposite direction, the charging voltage falls below the threshold voltage of inverter so that the transistors are switched back into their initial conducting states.
Patent GB-1142090-A (GB)
Title: Depilatory preparations
IPC: A61K8/46
Filed: 1967-12-29
Abstract: 1,142,090. Depilatory composition. R. A. SLIWINSKI. 29 Dec., 1967 [5 Jan., 1967], No. 59143/67. Heading ASB. A depilatory preparation comprises 2-7% by weight of an alkaline earth metal thioglycollate, 2-10% by weight of an alkali metal thioglycollate and 1-8% by weight of a fatty alcohol-alkylene oxide wax, in water at a pH in the range from 11.5-13.5. The composition is preferably in the form of an aerosol using a volatile halogenated hydrocarbon liquid or a volatile hydrocarbon liquid as a propelling agent.
Patent GB-1306588-A (GB)
Title: Nozzle assembly for jet propulsion engines
IPC: F02K1/00
Filed: 1970-12-15
Abstract: 1306588 Deflecting propulsion jets MESSERSCHMITT-BOLKOW-BLOHM GmbH 15 Dec 1970 [23 Dec 1969] 59488/70 Heading B7G [Also in Division F1] A nozzle assembly for a jet propulsion engine comprises a jet pipe 1 having a variable area nozzle 2 and webs 4 each having a part-spherical edge to co-operate with a part-spherical inner surface of a ring 3 mounted thereon. The ring carries tangential pivots for a plurality (e.g. four) segments 5-8 which are so shaped aft of the pivots that they co-operate to form a further jet pipe 9, and are each formed with a rib 10 pivotally connected at 11 to a jack 12, pivoted at 13 to jet pipe 1. The segments are adjusted by simultaneous operation of jacks 12 so that the outlet cross-sectional area corresponds to the area of the propulsion jet 15 as selected by nozzle 2, and by differential operation of the jets to cause jet deflection.
Patent GB-1275879-A (GB)
Title: Process for the preparation of isonitriles
Inventor: HOFFMAN PETER
IPC: C07C/
Filed: 1970-12-16
Abstract: 1275879 Isonitriles FARBENFABRIKEN BAYER AG 16 Dec 1970 [16 Dec 1969] 59708/70 Heading C2C Compounds of the general formula RNC (R = aliphatic, alicyclic or aromatic radical which may carry at least one substituent selected from halogen, alkoxy, aroxy, alkylmercapto, arylmercapto, alkyl, cycloalkyl, aryl, CN, carboxylic ester, CONH 2 , NO 2 , alkylsulphonyl, arylsulphonyl) are prepared by reacting RNHCHO with COCl 2  in an organic solvent in the presence of an aqueous base and a catalytic amount of a tertiary amine at pH 6-12 and - 20 to 70 C. The above compounds may be used in acaricidal, insecticidal and fungicidal compositions containing them in association with a carrier.
Patent GB-1213190-A (GB)
Title: Process and apparatus for internally nitriding tubes
Inventor: ROSE THOMAS CALVIN
IPC: C23C8/26
Filed: 1968-12-20
Abstract: 1,213,190. Nitriding tubes. GENERAL ELECTRIC CO. Dec. 20, 1968 [Jan. 15, 1968], No. 60795/68. Heading C7U. The internal surfaces of ferrous alloy tubes are nitrided by contacting the said surfaces with an activator and flowing ammonia having a degree of dissociation between 15% and 50% through the tube at a temperature from 850‹F. to 1200‹F., the direction of ammonia flow being reversed at intervals of not greater than 30 minutes. Inert gas may be flowed through the tube while heating to and cooling from the nitriding temperature. The nitriding gas may be flowed through the tube between manifolds at either end thereof and each manifold may contain an amount of decomposable activator such as polyvinyl chloride, organic acid phosphate, ammonium chloride, ammonium bifluoride, sulphamic acid or mixtures thereof preferably in amounts up to 3 grams per square foot of surface to be nitrided.
Patent GB-1336265-A (GB)
Title: Method of drying a web by air
IPC: F26B13/20
Filed: 1971-12-30
Abstract: 1336265 Drying webs FUJI PHOTO FILM CO 30 Dec 1971 [30 Dec 1970] 60827/71 Heading F4G [Also in Division B8] A travelling coated web of photographic material is supported and dried by air issuing from circular or elliptical apertures 101-104 &c. in a flat or part-cylindrical plate, the web having a width no greater than 1-5 m., the air maintaining a static air pressure of not less than 5 mm. H 2 0 between the web and the plate, the total area of the apertures being not more than 5% of the area of the plate, the apertures being dimensioned and disposed in accordance with the following conditions: (1) x = 70 to 110 degrees (2) # = - 20 ro 20 C. (3) 8 = 3 to 7 mm. (4) d/s = 1 to 3 (5) 13 p#l. The stagger e is chosen to ensure that the apertures are uniformly distributed across the plate when the area of the apertures is totalled along the web feeding direction A. The web may be coated on both sides. Sets of conditions are specified.
Patent GB-1284140-A (GB)
Title: Tertiary-butyl phenol derivatives
IPC: C07C235/20
Filed: 1969-12-31
Abstract: 1284140 Tertiary-butyl phenol derivatives INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE and LES LABORATOIRES MILLOT 31 Dec 1969 [31 Dec 1968] 63537/69 Heading C2C Tertiary-butyl phenol derivatives of formula wherein X is a tertiary butyl group, n represents 1 or 2, R is a hydrogen atom or an allyl group, Y represents a direct linkage between -O- and -CO- groups or is a -CH 2 - group and R 1  and R 2  both represent hydrogen or taken separately, each represents a (C 2-6 ) alkyl or a cyclohexyl group; or taken together with the nitrogen atom to which they are attached represent a pyrrolidinyl, piperidinyl, morpholinyl or 4- methylpiperazinyl group, the group X, when n is one, being in position ortho, meta or para to the phenolic oxygen atom, and group X, when n is two, being in 2 : 4 or 3 : 5 relationship, or salts of said derivatives. These compounds may be prepared by one of the following methods: (a) when R<SP>1</SP> and R<SP>2</SP> represent hydrogen and Y is a direct linkage by condensing a t-butylphenol of formula where R, X and n have the same meanings as above, with an alkali metal cyanate in the presence of trifluoroacetic acid; (b) in the case where R<SP>1</SP> and R<SP>2</SP> are other than hydrogen and Y is a direct linkage by condensing a phenol chloroformate of formula where X, n and R have the meanings assigned to them above, with HNR 1 R 2 , where R<SP>1</SP> and R<SP>2</SP> are as defined above; (c) in the case where Y is -CH 2 -, by condensing a compound of the Formula II in the form of its alkali metal salt with a haloacetamide of formula where R<SP>1</SP> and R<SP>2</SP> are the same as defined above. Many compounds have been specified in the Specification. Pharmaceutical compositions comprising the compounds of the invention together with a pharmaceutically acceptable solid or liquid diluent are found to have antidepressant, tranquillizing, analgesic and central stimulating properties.
Patent GB-646725-A (GB)
Abstract: 646,725. Workmen's time-recorders. LANDIS & GYR SOC. ANON. Nov. 3, 1947, No. 29319. Convention date, Nov. 13, 1946. [Class 106 (iv)] A workmen's time-recorder with a time drum with slots in its periphery into which detachable projecting riders acting as cam surfaces are inserted is characterized in that a part of the profile of each rider is deformed and a part of the drum is profiled to match and by interlocking prevents displacement of the rider. The periphery 1 of a time drum has a peripheral rib 3, Fig. 5, and slots 2 in drum and rib at right angles to the rib. A rider 4 has two parts 6 of its side profile offset as by pressing to engage tapered surfaces of the rib, which is also rounded off at 3b. The upper edges of the riders have teeth lying in the path of release devices, any teeth not required being broken away. The riders may have but one offset part 7, Fig. 6, to fit into a tapered groove 8 formed in the area of the slots 2. The lateral surfaces of the rib 3 and groove 8 may be slightly inclined to increase the security of attachment of the riders.
Patent GB-748131-A (GB)
Abstract: 748,131. Temperature-responsive actuating-elements. STANDARD-THOMSON CORPORATION. Jan. 23, 1953 [Feb. 12, 1952], No. 2004/53. Class 64(2). [Also in Groups XXVI and XXIX] A piston 10 and cylinder 12, 16 are arranged to move relatively upon thermal expansion of a liquid, wax or a waxy substance contained in the cylinder which is sealed by a telescoping diaphragm packing 24 (see Group XXVI). The cylinder may be arranged to lift a valve plate 40 off its seating 38 against the influence of a tension spring 36 or an evacuated bellows 60, Fig. 3, or both, the cylinder sliding up on the piston 10 which is mounted in a frame supporting the seating 38. A small quantity of vaporizable liquid may be contained in the bellows and be such as to boil at a temperature in excess of the normal opening temperature of the valve to destroy the vacuum in the cylinder and so provide a safety device. In a modification, Fig. 4, a second expansion chamber 130 is provided which is connected to the cylinder by a capillary 128.
Patent GB-2000717-A (GB)
Title: A method of producing a trim component for the internal furnishing of a motor vehicle
IPC: B29C44/12
Filed: 1978-07-10
Abstract: A method of producing a trim component for the internal furnishing of a motor vehicle and having a form-stable support (13), padding and a covering element 12, for covering said padding, the method comprising the steps of placing the covering element 12 onto a mould part 3 and retaining it thereon by means of vacuum applied through ducts 4, placing the support 13 on a mould part 2 at a distance from the covering element 12 and introducing the foam substance 16 forming the padding between the covering element 12 and the support 13. The latter may be of plastics or hard fibre and the covering element 12 may be of plastics which may have a textile backing. <IMAGE>
Patent GB-2027065-A (GB)
Title: Selvage Forming Mechanism for a Shuttleless Loom
IPC: D03C7/08
Filed: 1978-07-19
Abstract: A selvage forming mechanism (12) of a shuttleless loom (10), comprises two full-cross leno shedding devices (14, 16) for respectively binding the both sides of a fabric (F) to form selvage structures (S1, S2), the two shedding devices being located to cause the binding yarns (b1, b2, b1', b2') to twist in the same direction during weaving operation, thereby preventing either one of selvage structures from being easily broken. <IMAGE>
Patent GB-2004026-A (GB)
Title: Coupling for a divided drive shaft
IPC: F16D3/205
Filed: 1978-07-21
Abstract: In a coupling for a divided drive shaft of an agricultural machine such as a swath turner, one shaft section 5 has a pin 9 at one end and the other shaft section 4 has a recess 7 for receiving said shaft 5 and pin 9 and permitting horizontal and vertical pivotal movements therein, frictional wear on the coupling being reduced by mounting freely rotatable rollers 10 on said pin 9. <IMAGE>
Patent GB-2027514-A (GB)
Title: Belt tensioning pulley assembly
IPC: F16H7/12
Filed: 1978-08-05
Abstract: This invention relates to a tension pulley assembly 3 for applying tension to a belt 2 which drives a plurality of spindles or shafts 1 in a textile yarn spinning or twisting machine. A pulley 15 is mounted at one end of a leaf spring 6, which is fixedly supported so as to define a fulcrum for the pulley. The driving belt extends in a straight path from its position of contact with the pulley and a position adjacent the fulcrum such that a distance 4, when measured perpendicularly to the belt, between the belt and the fulcrum is less than the diameter of the belt contacting peripheral surface of the pulley. Preferably this distance is less than the radius of the belt contacting peripheral surface of the pulley. <IMAGE>
Patent GB-2006752-A (GB)
Title: Imidazole derivatives and salts thereof, their synthesis, and intermediates, and pharmaceutical formulations
IPC: A61K31/415
Filed: 1978-08-22
Abstract: The invention relates to the use in medicine of 1-alkylimidazoles of formula   <IMAGE> in which A is a straight or branched, saturated or unsaturated acyclic hydrocarbon radical of from 1 to 3 carbon atoms; n is 0 or 1; and R is a cycloalkyl or cycloalkenyl radical of from 4 to 9 carbon atoms and optionally substituted by one, two, three or more alkyl radicals each containing from 1 to 4 carbon atoms, or, when n is 1, A and R together form an alkyl radical of from 4 to 7 carbon atoms or an alkenyl or alkynyl radical of from 4 to 9 carbon atoms, the imidazole being the free base or a pharmaceutically acceptable salt thereof. The 1-alkylimidazoles in which n is 0 and A is cycloalkyl or cycloalkenyl are novel, as are those when A and R together form an alkenyl radical. Methods of preparing the 1- alkylimidazoles are disclosed. The 1-alkylimidazoles have pharmacological properties of use in medicine, in particular for the treatment or prophylaxis of thromboembolic disorders.
Patent GB-2025232-A (GB)
Title: Cervical dilator
IPC: A61M29/00
Filed: 1978-10-18
Abstract: A cervical dilator consists of a pair of opposing pivoted jaws 12, spring-biased to closed position, with insertion arms 23 having straight elongated mating tips and having angled flared rear portions leading to a pivoted connection 17,18 of the fulcrum type, thereafter terminating in squeeze force-applying arms 14, with a biasing spring mounted therebetween. <IMAGE>
Patent GB-2007742-A (GB)
Title: Method and apparatus for forming holes in the ground
IPC: E21B7/24
Filed: 1978-10-25
Abstract: A method of forming holes in the ground, for the subsequent planting of poles or stakes, wherein the holes are made simultaneously with the compaction of the ground around the location of the hole. Apparatus for this method comprising hole making means e.g. a post 1 driven into the ground by a vibrating hammer 37 and means to apply a compacting force to the ground around the location of the hole being made, e.g. a ramming bed plate 51 surrounding the post 1 and driven by a pair of rotating out-of-balance weights 43, 44. After forming the hole the post 1 is retracted by jack 42 to allow a pole or stake to be planted in the hole. <IMAGE>
Patent GB-2009903-A (GB)
Title: Blast furnace smelting of zinc
IPC: C22B19/08
Filed: 1978-11-20
Abstract: A method of smelting zinc in a blast furnace wherein the furnace is charged sequentially with separate loads of coke and agglomerated zinc oxide material, wherein, for a major proportion of the total coke charging time, from 25% to 50% by weight of the coke charged is directed towards the centre of the furnace shaft so as to promote a coke-rich charge core, the remainder of the coke charged being directed towards the furnace walls, and wherein for a minor proportion of the said total coke charging time from 80% to 95% by weight of the coke charged is directed towards the walls of the furnace shaft to aid accretion melting, the remainder of the coke charged being directed towards the centre of the furnace shaft.
Patent GB-2041141-A (GB)
Title: Machinery safety device
IPC: F16P3/12
Filed: 1979-01-31
Abstract: In a backpart moulding machine a guard arrangement 50 is provided for preventing trapping of the operator's hand between the inner form 34 and outer band 136 as they are closed. The guard arrangement 50 comprises two guard members 60 extending rearwardly between the inner form 34 and outer band 136, but arranged one at either side of the inner form 34 so as not to impede the closing movement. Also the guard arrangement 50 is such that it will not interfere with the work being moulded, including long-legged boots, and does not impede loading and unloading of uppers. In the event of actuation of the guard arrangement 50 (by engagement therewith of the operator's hand when the closing movement has been initiated), such closing movement is arrested by operation, by the guard 52, of a valve 66 controlling fluid pressure operation of the operating room 28. <IMAGE>