baber/WOPTO huggingface dataset:
Patent GB-1075590-A (GB)
Title: Rotor head fairing in combination with an aircraft rotor head
IPC: B64C27/04
Filed: 1965-12-15
Abstract: 1,075,590. Rotary wing aircraft. UNITED AIRCRAFT CORPORATION. Dec. 15, 1965 [Dec. 16, 1964], No. 53227/65. Heading B7W. [Also in Division E2] The rotor head of a rotary wing aircraft is covered by a fairing which has a cut-out for each blade and is moved relative to the rotor head to permit lead lag movements of the rotor blades. The fairing comprises upper and lower sections 106, 108 fixed together and surmounted by a dome 102 fixed to the tops of the drag hinge mountings, which are inside the fairing, by quick release stud and socket fastenings 164 (see Division E2, or Fig. 4, not shown). The fairing is mounted on the outer ends of arms (252, Fig. 3, not shown) mounted on splined downward extensions of the drag hinge pins 60 to pivot therewith. Each lever has a splined ring surrounded by a band of resilient material (255) which allows slight relative pivoting between the hinge pin and the lever. The top portion of each cut-out is faired by a frangible member (207), Fig. 2, not shown) which leaves an opening large enough for normal blade flapping, and which can be broken or deformed by the blade if abnormal flapping occurs. Seals 200, 212 are provided which allow the fairing to move relatively to the rotor pylon 12 and the dome 102 respectively.
Patent GB-1285582-A (GB)
Title: Detergents containing non-ionic surfactants
IPC: C11D1/08
Filed: 1969-10-30
Abstract: 1285582 Detergents containing non-ionic surfactants ROHM & HAAS CO 30 Oct 1969 [12 Nov 1968] 53234/69 Heading C5D A solubilized non-ionic surfactant contains (A) 25 to 90 parts by weight of a substituted succinic acid wherein R is an alkyl or alkenyl group, branched or straight chain of 7 to 12 C atoms or a salt, alkyl ester, amide or anhydride thereof, and (B) 10 to 75 parts by weight of a non-ionic polyethoxylated surface active agent. Component (B) may be an ethylene oxide-propyleneoxide block copolymer or a compound of formula (II) where R is C 8 -C 18  alkoxy, C 8 -C 18  alkyl amine or C 6 -C 12  alkyl phenoxy, x is 3-90, R<SP>1</SP> is H, C1-C4 alkyl, benzyl, acetyl, ethyl acetyl or chloro and R<SP>2</SP> is H, CH 3  or C 2 H 5 . The surfactant mixture may be incorporated in a detergent or cleaning composition, especially one containing a high concentration of alkali, e.g. potassium hydroxide, sodium silicate or tetrasodium pyrophosphate.
Patent GB-1526010-A (GB)
Title: Mining installation having an extraction machine mounted on a longwall face conveyor
IPC: E21C35/08
Filed: 1977-02-17
Abstract: 1526010 Mining installations BERGWERKSVERBAND GmbH 17 Feb 1977 [23 Feb 1976] 53334/76 Heading E1F In a mining installation, a signal generator 20 generating electromagnetic or optical radiation is mounted on the machine frame 1 and cooperating signal receivers 21, 22 are mounted at either end of a longwall face conveyor 11, the receivers actuating switching units for stopping or reversing the movement of the mining machine.
Patent GB-537703-A (GB)
Abstract: 537,703. Valves. AIRCRAFT COMPONENTS, Ltd., and McKENZIE, W. W. April 22, 1940, No. 21644/39. [Class 135] A valve device particularly applicable for use as a fuel control valve on aircraft comprises a casing with a plurality of inlets each controllable by a valve openable against the direction of flow by a common actuating cam. The cam 6 is formed integrally with a spindle 5 having a reduced end 5a loosely stepped in a bearing 7 fitted with an anti-friction ball 9. The spindle passes to the outside of the casing through a packing gland and is fitted with an actuating handle 10 or coupled to a remote control apparatus. The tapered valve members 13 which are recessed to house packing washers 19 adapted to engage narrow seats on the casing have projections 18 co-operating with the cam and are guided by spindles 15 working through spiders 14 clamped in place by the inlet unions 11. The central chamber housing the actuating spindle leads to outlets 12. The arcuate cam surface subtends a comparatively large angle so that the setting of the lever 10 is not critical. The spindle may be axially adjustable to bring different cam arrangements into action. The valves, the cam or an additional external cam on the spindle may influence electric contacts to indicate the position of the valves.
Patent GB-1190518-A (GB)
Title: Improvements in and relating to Well Tools.
Inventor: KISLING JAMES W
IPC: E21B17/043
Filed: 1968-11-13
Abstract: 1,190,518. Pipe joints. SCHLUMBERGER TECHNOLOGY CORP. 13 Nov., 1968, No. 53811/68. Heading F2G. [Also in Division E1] A well tool, such as a jar, has parts 16, 12 prevented from relative rotation by a key 38 engaging a groove 31 in one part and the walls of an aperture 32 in the other part, the key being deformable for fitting and removal. A lever is engaged in the threaded hole 44 for removing the key. The parts are screwed together by threads 18 and a spacer 39 and spring washers 37 permit alignment of the aperture and groove.
Patent GB-1514658-A (GB)
Title: Demand compensated hydraulic system with flow-sensitive device
IPC: F15B11/16
Filed: 1976-12-29
Abstract: 1514658 Fluid-pressure servomotor systems DEERE & CO 29 Dec 1976 [29 Dec 1975]  54263/76 Heading G3P A hydraulic system comprises a variable displacement pump 10 with a displacement control device 36 spring biased to increase displacement and an output line 16 connected to a motor 18, 20 via a motor control valve 26 or 28, a control line 50 connected between the pump and the device 36 to increase pump displacement against the spring bias, a demand valve 42 to block the control line in response to pressurized fluid conveyed by a pilot line 61 from a point between a motor 18 or 20 and its control valve 26 or 28, and a flow responsive valve 80 so connected with the pilot line 61, the output line 16, and the sump 14 that in response to decreased flow through the output line it provides connection of the pilot line to a sump whereas, in response to increased flow through the output line, it does not provide this connection. The device 80 includes a piston 90 having a groove 100 containing a ring 102 which is moved slightly to the right as the piston is displaced against a spring 91 by increasing pump output. During this movement, lines 84 and 86 remain unconnected but during reverse movement of the piston 90 with decreasing pump output pressure connection is temporarily established in consequence of the altered position of the ring 102 (see Fig. 2, not shown). Pressure in the pilot line 61 due to failure of a motor control valve to return fully to neutral position is thus relieved and the return of the pump 10 to no-load condition is ensured. The system also includes a priority valve 72, a relief valve 58 and a feedback lever 30 for the valve 28 and motor 20.
Patent GB-1204698-A (GB)
Title: A turbofan engine and a method of operating said engine
IPC: F02K1/82
Filed: 1967-11-29
Abstract: 1,204,698. Gas turbine ducted fan engines; combustion equipment. UNITED AIRCRAFT CORP. Nov.29, 1967 [Dec.5, 1966], No.54323/67. Headings F1J and F1L. A gas turbine jet engine of the by-pass or ducted fan type is provided with re-heat combustion equipment in the region where the turbine exhaust gases and the by-pass air-flow mix and downstream of the re-heat equipment the gases flow through a curved exhaust duct, means being provided to ensure that the combustion gases from the re-heat section are surrounded by a layer of unburned air as the gases flow through the curved exhaust duct. In Fig. 1 the turbine exhaust gases discharge through duct 18 and the by-pass air-flow discharges through annular duct 20, the two streams discharging into a common duct 10, the two flows being suitably matched. Re-heat combustion equipment comprising a fuel nozzle assembly 28, 30 and flame stabilizing equipment 4 are disposed in the duct 10 and downstream of the re-heat equipment the gas duct 15 is in the form of a bend whereby the exhaust gases discharge at an angle to the flow through the engine. The total pressure of the exhaust gases and by-pass air is substantially uniform across the duct upstream of the re-heat equipment. Combustion is caused to occur within a controlled profile indicated at 29, so that the central core of combustion gases is surrounded by a peripheral stream of unburned air, the peripheral stream of air having a greater total pressure than the central core of hot gases. This lowers the rate at which the cooling boundary layer is dissipated as the core of hot gases and the peripheral layer of air pass through the curved exhaust duct. The theory of the invention is set forth in the Specification.
Patent GB-1108383-A (GB)
Title: Acrylic polymers and light sensitive materials containing them
Inventor: WAGNER HANS MAX
IPC: G03F7/038
Filed: 1965-12-23
Abstract: Polymers suitable for use in light-sensitive photographic materials contain recurring units of the formula <FORM:1108383/C3/1> in which R is hydrogen or methyl and R1 is a group -CH2-COOR3, -CH2-CONHR2 or -CH(COOR3)-CH2CH2-COOR3, R2 being a group -CH2-COOR3 or C1-C7 alkyl and R3 being alkyl.  The polymers may contain units of comonomers, e.g. alkyl esters of acrylic or alkacrylic acids, and vinyl esters of alkanoic acids; the polymers preferably contain 10-75 molar per cent of units of the above formula. In examples, homopolymers are prepared by polymerizing the monomer in an aqueous or benzene medium using a persulphate catalyst, and copolymers are prepared in ethanol or acetone using azodiisobutyronitrile catalyst; the amide monomers used are ethyl N-acryloyl-glycinate, ethyl N - acryloylglycylglycinate, N - acryloyl - N1 - n - butyl - glycinamide, N - acryloyl - N1 - ethyl - glycinamide and N - acryloyl - N1 - n - hexyl - glycinamide, and comonomers used are vinyl acetate, methyl, ethyl and n-butyl acrylates and methyl methacrylate.ALSO:Ethyl N-acryloylglycinate is prepared by reacting ethyl glycinate with acrylic acid in methylene chloride and in the presence of dicyclohexylcarbodiimide, N,N1 - dicyclohexylurea separating out as a by-product.  Ethyl N - acryloylglycylglycinate is prepared by reacting ethyl glycylglycinate hydrochloride with acryloyl chloride in ether in the presence of aqueous potassium carbonate.  N - Acryloyl - N1 - n - butyl - glycinamide is prepared by reacting 2-amino-N-n-butylacetamide with acryloyl chloride in ether in the presence of aqueous potassium carbonate. The corresponding N1-ethyl and N1-n-hexyl compounds are similarly obtained.
Patent GB-1392600-A (GB)
Title: Lubricating oil compositions
IPC: C10M169/00
Filed: 1971-11-24
Abstract: 1392600 Quaternary ammonium salts of acid phosphate esters EXXON RESEARCH & ENG CO 8 Nov 1972 [24 Nov 1971] 54577/71 Heading C2P [Also in Division C5] Tetra butyl ammonium salts of mixtures of (i) methyl dihydrogen phosphate and dimethyl hydrogen phosphate, (ii) ethyl dihydrogen phosphate and diethyl hydrogen phosphate and (iii) n-butyl dihydrogen phosphate and di-nbutyl hydrogen phosphate and hexyl trioctyl ammonium salts of the acid phosphate mixture (i) are prepared by treating the acid phosphates with the appropriate quaternary ammonium hydroxide to give pH = 7, evaporating to dryness, adding toluene and again evaporating to dryness. Tetra butyl ammonium salts of mixtures of C 6 , C 8  and C 12  n-alkyl and di(n-alkyl) hydrogen phosphates are also referred to.
Patent GB-1141267-A (GB)
Title: Improvements in machines for attaching buttons to garments
Inventor: HOLDSWORTH JOHN FREDERICK
IPC: A41H37/10
Filed: 1966-12-09
Abstract: 1,141,267. Apparatus for setting buttons. SCRU-FIX Ltd. 3 Jan., 1968 [9 Dec., 1966], No. 55147/66. Heading A3H. A machine for attaching to cloth a twopart button, comprising a head and a base plate one part having a stem engaging a hole in the other, consists of a C-shaped support the lower limb of which supports an anvil block 23 surrounding a ram 22 for a button part, the upper limb 15 having an aperture for a slidable shaft 28, the lower end of which has a button head engaging member 53, the button head being supported in a recess 45 in a presser foot 42 on a holder 32. The shaft 28 passes through the base of the holder which is urged upwardly by a spring 39 surrounding the shaft between the limb 15 and the base. The shaft 28 is urged upwardly by a spring 31 surrounding the shaft between the limb 19 and a collar on the upper end of the shaft. The button head is supported in the recess 45 by a spring urged plate. The base plate is supported on the ram with the stem below the anvil top. The cloth is placed over the anvil. The button head is lowered by operating handle 56 which rotates a shaft with a pinion in and recess in the limb 15, the pinion being in mesh with a rack integral or secured to the shaft 28. As the shaft 28 descends the button head engaging member 53 contacts the button head which presses on the holder 32 which then descends until the presser foot 42 engages the anvil block which descends against the action of a spring 25 until the stem of the base plate projects above the anvil member, pierces the cloth and enters the hole in the button head. When the handle is released the machine parts regain their original position under spring action.
Patent GB-1403599-A (GB)
Title: Apparatus for programmed instruction and testing
IPC: G09B3/06
Filed: 1972-12-04
Abstract: 1403599 Teaching machines J B HUNNICUTT G W PLUMLY and T R RADFORD 4 Dec 1972 [6 Dec 1971] 55845/72 Heading G5G A teaching machine of the type described in Specification 1,283,421 is provided with a modified linkage, including a toggle lever, between the answer selector button and the means for indicating whether a selected answer is correct or not, the arrangement being such as to ensure that operation of the indicating means is precluded until after the button-operation is irrevocably committed to indicate the selected answer, whereby cheating by a student is prevented.
Patent GB-1368130-A (GB)
Title: Centrifugal clutches
IPC: F16D3/68
Filed: 1971-12-02
Abstract: 1368130 Centrifugal clutches KOPPERS CO Inc 2 Dec 1971 [8 Dec 1970] 56090/71 Heading F2C In centrifugal clutches of the type in which arcuate shoes 60 move to interconnect an outer drum 14 with an inner hub 12 on rotation of the latter, the shoes are connected to the inner hub 12 via elastomeric members 70 positioned between vanes 32 and 64 extending radially from the hub and shoes respectively. The elastomeric members 70 in the embodiment shown are held to flange members (Fig. 2, not shown) of the hub by bolts 46 and are of generally cylindrical shape, but alternative constructions have the members held to the shoes, and there may be one elliptical member per shoe, instead of cylindrical members 70, with the vane 64 dispensed with. The members 70 shown are not prestressed, the shoes not transmitting torque until centrifugal force moves them out, but as an alternative the shoes may be held against the drum always, the torque transmitting capacity where varying with speed and the members 70 prestressed to force the shoes out (Fig. 8, not shown). A yet further construction (Figs. 9 and 10) has flanges at the foot of each vane 64 and circumferentially extending flanges at the ends of vanes 32 so that the members 70 act to hold the shoe away from the drum until a predetermined speed is attained, an alternative to this construction having two vanes extending from each shoe with a flange on each and a single vane extending between these from the hub 12. The elastomeric material may be rubber (natural or synthetic).
Patent GB-1211557-A (GB)
Title: Tape cartridge
IPC: G11B23/06
Filed: 1967-12-12
Abstract: 1,211,557. Magnetic tape cassettes. DATA PACKAGING CORP. 12 Dec.; 196,7 [4 Jan., 1967], No. 56454/67. Heading G5R.  An endless magnetic tape cassette includes a reel having a turntable 46 with a hub 50 tapering towards a cap 54 extending beyond the top of the hub periphery and spaced from the turntable less than the tape width to allow the innermost convolution to be withdrawn without disturbing the adjacent areas. The turntable has ribs 52 to support the tape, and slots (62, Fig. 9, not shown) for removal of dust &c., and rotates about a spindle 68 having an internal shoulder co-operable with a hook on a pin extending from the cover 22 to secure the assembly, similar retainers being provided via the pinch roller spindle and a tapered guide post (38, Fig. 4, not shown). A foam pressure pad (122, Fig. 11, not shown) on a backing (120) is pinched between pins in the cover 22 which also has depending annular and radial walls 176, 160, 162 and 164 to prevent tape fouling. Space is provided between the reel and front wall to allow a slack tape loop to be accommodated, and guide pins in the cassette or a lip on the turntable prevent tape spillage. Specifications 1,211,558 and 1,211,559 are referred to.
Patent GB-1410590-A (GB)
Title: Process for the preparation of carbamates
IPC: C07C239/00
Filed: 1971-12-06
Abstract: 1410590 Carbamate preparation QUIMCO GmbH 4 Dec 1972 [6 Dec 1971] 56581/71 Heading C2C N-monosubstituted carbamates having the general formula R(NHCOOR<SP>111</SP>) n  where K and R<SP>111</SP> are substituted or unsubstituted aliphatic, cycloaliphatic, aromatic or heterocyclic radicals and n is an integer are prepared by reacting a trisubstituted urea of the formula R(NHCONR<SP>1</SP>R<SP>11</SP>)n where R<SP>1</SP> is a substituted or unsubstituted monovalent aliphatic or aromatic radical and R<SP>11</SP> is a substituted or unsubstituted monovalent aliphatic radical or R<SP>1</SP> and R<SP>11</SP> together form a substituted or unsubstituted divalent radical in which at least one of the two carbon atoms adjoining the nitrogen atom of the urea group is cycloaliphatic, with a hydroxy compound of the formula R<SP>111</SP>(OH) m  where m is an integer, and with gaseous hydrogen chloride.
Patent GB-1443159-A (GB)
Title: Cutting tools
IPC: B26D1/03
Filed: 1972-12-09
Abstract: 1443159 Cutting apparatus S V FOUNTAIN 14 Nov 1973 [9 Dec 1972] 56958/72 Headings B4B and B5L A tool for cutting and trimming, e.g. bevelling, sheets of material, e.g. expanded polystyrene, comprises a bed 12 having a guideway 13, and at least two stationary fixed cutting blades 17, 18 mounted on the bed in such a way that as a workpiece is moved along the bed and guided by the guideway, the workpiece is moved into engagement with each blade in succession to effect cutting and trimming operations in one movement. The cutting blade 17 is clamped to the bed by means of a plate 19 having a bent portion 19c for guarding the blade; the plate is formed with a cut-out 19a having a chamferred edge so as to smoothly separate the two parts as they are cut. The blade 18 is clamped between two plates 40, 20, the plate 20 being slidable in a groove 22 formed in the underside of the bed which may be made from wood; the plate 20 may be locked in an adjusted position by a screw 43. The plate 40 is formed with an angle portion 40a which allows a waste corner piece to pass therethrough during a bevelling operation by the blade 18. In operation, the sheet material is placed on a carriage 14 slidable on the bed and guided by a tongue 15 running in the guideway 13. Rules 28, 29 are provided for accurately locating the sheet material on the carriage. The blades may be razor blades or they may be shaped so as to provide, e.g. a curved bevelled edge.
Patent GB-1149449-A (GB)
Title: Regeneration of catalyst for making vinyl acetate
IPC: C07C69/15
Filed: 1967-12-15
Abstract: 1,149,449. Vinyl acetate. W. R. GRACE & CO. 15 Dec., 1967 [24 March, 1967], No. 56168/67. Heading C2C. [Also in Division B1] Vinyl acetate is prepared by reacting ethylene, acetic acid and oxygen in the presence of a catalyst which contains Ru, Rh, Pd, Ir or Pt, which catalyst having been exhausted by facilitating this reaction is regenerated by oxidizing with HNO 3 , freeing from NO<SP>1</SP> 3  and reacting with H.CHO.
Patent GB-1218172-A (GB)
Title: Improvements in the treatment of fibrous materials
Inventor: CLOKE IVOR JOHN
IPC: D04H1/4334
Filed: 1966-12-29
Abstract: 1,218,172. Seaming non-metallic sheet material. INTERNATIONAL SYNTHETIC RUBBER CO. Ltd. 18 Dec., 1967 [29 Dec., 1966], No. 58160/66. Heading B5K. [Also in Divisions D1 and D2] A heat sealable material comprises a fabric or paper made from natural and/or synthetic fibres impregnated with a thermoplastic elastomer which has a tensile strength of not less than 1000 p.s.i. and an elongation-at-break of not less than 500% at ambient temperatures and becomes plastic at temperatures above 120‹ C. The fabric may be a woven, non-woven or knitted fabric, e.g. a viscose rayon/nylon non- woven fabric, and the paper may be made from cellulose fibres or blends thereof with synthetic fibres e.g. nylon. The thermoplastic elastomer may be a block copolymer of the type ABA, the block A which may have a molecular weight of 5000-1,000,000 preferably being styrene, styrene/acrylonitrile or methyl methacrylate and the block B which may have a molecular weight of 25,000-800,000 preferably being butadiene or isoprene. Alternatively the thermoplastic elastomer may be of the type ABCBA where AB and BA are block copolymers linked together with the hydrocarbon residue C of a dihalohydrocarbon, A preferably being a polymerized alkenyl aromatic hydrocarbon and B a polymer of a conjugated diene, or a carboxylated polybutadiene which has been reacted with a metal of Groups I, II or III of the Mendeleef Periodic Tables, e.g. magnesium or zinc, the metals preferably being in the form of oxides, e.g. zinc oxide, or alkoxides, e.g. sodium alkoxide. The thermoplaltic elastomer may be applied to the fabric or paper as a solution in an aliphatic or aromatic hydrocarbon or halogenated derivative thereof e.g. perchloroethylene or chloroform by immersion, excess solution being removed by squeeze rollers and the fibrous material dried over drying cylinders or in hot air. Alternatively the thermoplastic elastomer may be applied in the form of a latex by impregnation or in the case of paper by the addition of the latex at the beater stage whilst the fibres are in the form of a slurry in water, precipitation of the latex on to the fibres being effected by means of alum and/or cationic polyamines. Articles of clothing may be made from the heat sealable materials by sealing the seams of the articles by the application of heat and pressure to cause the thermoplastic elastomer to fuse.
Patent GB-1360363-A (GB)
Title: Sulphanilamido pyrazines
IPC: C07D241/20
Filed: 1972-12-19
Abstract: 1360363 Coccidiostatic compositions SOC FARMACEUTICI ITALIA 19 Dec 1972 [24 Dec 1971] 58638/72 Heading A5B [Also in Division C2] Parmaceutical preparations showing coccidiostatic action contain 2 - sulphanilamido - 6 - bromo - pyrazine and diaveridine.
Patent GB-1176887-A (GB)
Title: Extrusion Die or Nozzle
IPC: B29C48/08
Filed: 1967-12-28
Abstract: 1,176,887. Extrusion die. KALLE A.G. 28 Dec., 1967 [29 Dec., 1966], No. 58827/67. Heading B5B. [Also in Division B2] Films may be made by extruding film forming materials through a slotted die in which the slot 15 is formed between two separate cheeks 12, 13 which when assembled meet over plane parallel surfaces extending in the longitudinal direction of the slot, has said cheeks in the assembled condition confined between two corresponding surfaces of an external member or members 19 under a fluid pressure exerted in one or more chambers 20 in a confining surface of such external member(s) which chambers are sealed to maintain said fluid pressure by resilient means arranged to make confining contact under said pressure with the adjacent cheek surface. The resilient means may be a sheet adhered across the chamber(s) or one or more hoses 21 in and tending to project from the chambers. The external member may be a U-shaped bar. Further chambers and resilient means may be provided for varying the slot width. One of the cheeks may have a recess constituting a reservoir for the film forming material. The fluid pressure medium may be used for heat transfer.