baber/WOPTO huggingface dataset:
Patent GB-1364154-A (GB)
Title: Idling speed control system for an automotive gasoline powered in ternal combustion engine
IPC: F02M1/10
Filed: 1972-11-09
Abstract: 1364154 Regulating I C engines NISSAN MOTOR CO Ltd 9 Nov 1972 [25 Nov 1971] 51829/72 Heading F1B An I.C. engine idling speed control system comprises throttle opening means 44 abutting a throttle opening lever 36 increasing the opening of a throttle 32 during idling in response to intake manifold vacuum, a barometric switch 142 controlling the energization of a solenoid control valve 56 to connect intake manifold vacuum via conduit 54 to the throttle opening means, avacuum level control means 72 connected with the solenoid control valve for controlling the level of intake manifold vacuum supplied to the throttle opening means in dependence on atmospheric pressure, the level of manifold vacuum supplied to the throttle actuating means being increased when atmospheric pressure decreases to further open the throttle during idling. When the accelerator pedal (not shown) is released an idling switch 140 is closed and low engine temperature causes closure of switch 138 to energize coil 66 causing a plunger 64 to be retracted thereby communicating conduit 60 with conduit 54 so that vacuum in chamber 50a causes upward movement of diaphragm 48 and plunger 46 to open the throttle. Meanwhile timer relay 130 is closed so that a retarding breaker contact assembly 108 retards ignition timing to effect faster engine warm-up. As the engine is warmedup switch 138 and timer relay 130 are opened and current flows through coil 102 to advance contact breaker 106 to improve efficiency. If the atmospheric pressure is below a predetermined level the barometric pressure in chamber 82a is lower than pressure in chamber 82b, diaphragm 84 is moved leftward with plunger 90 to decrease to effective flow area of port 78 whereby the intake manifold vacuum level admitted to chamber 50a is increased to cause further opening of the throttle valve 32. The barometric switch 142 closes if the atmospheric pressure is below a predetermined level to energize the coil 66 when the switch 138 has opened with increasing engine temperature.
Patent GB-1279988-A (GB)
Title: Improvements in the manufacture of articles by moulding synthetic resinous materials
Inventor: REES CLIVE
IPC: B29C45/37
Filed: 1969-10-24
Abstract: 1279988 Moulding grooved articles GIRLING Ltd 7 Oct 1970 [24 Oct 1969] 52099/69 Heading B5A An article 21, Fig. 1, having a cylindrical groove 20 of constant width, e.g. a piston or plunger for a master or slave cylinder in an hydraulic vehicle braking system, is made from synthetic resin, e.g. glass- or graphite-filled polyester by moulding in a cavity 12, 13 formed by separate mould parts 10, 11 with at least two separable complementary edge-abutting plates 14, 15 being between opposed faces of the mould parts and projecting into the cavity to form the groove and the plates 14, 15 and moulded article 21 are rotated relative to one another to remove flash from the groove. Moulding may be effected by injecting resin through passage 22 or by compression. The relative rotation is preferably through an angle of 10 degrees.
Patent GB-1322805-A (GB)
Title: Thermoplastic resin compositions containing insect repellants
IPC: A61K8/00
Filed: 1970-11-03
Abstract: 1322805 Insect-repellent compositions B F GOODRICH CO 3 Nov 1970 [3 Nov 1969] 52119/70 Heading A5E [Also in Division C3] Insects, especially mosquitoes, are repelled by applying to the surface from which it is desired to repel the insects a composition comprising a thermoplastic polymer, and 0.05 to 4.0 parts by weight per part of resin of an insect repellent, the thermoplastic resin having the formula where R is hydrogen or methyl, R 1  is C 1-10  alkyl, R 2  is methyl or ethyl, x is 3-12 weight %, y is 44 to 96 weight % and z is 1 to 44 weight %, all based on the total weight of x, y and z, the three types of group being present in the polymer in a heterogeneous relative order. In dry film form, the resin holds the insect repellent and releases it gradually. The composition may also contain a carrier, such as an alkyl alcohol. The insect repellent is preferably N,N-diethyl-m-toluamide, and may also be oil of citronella, dimethyl or dibutyl phthalate, ethylhexanediol, indalene or a N- (meta-toluyl)-methyl piperidine.
Patent GB-1150968-A (GB)
Title: Improvements in or relating to the Manufacture of Semiconductor Components
IPC: H01L29/00
Filed: 1966-11-22
Abstract: 1,150,968. Semi-conductor devices. SIEMENS A.G. 22 Nov., 1966 [23 Nov., 1965], No. 52225/66. Heading H1K. In the manufacture of a planar semi-conductor device a portion only of an oxide layer 8, formed during the diffusion of the emitter region 7, is removed during a subsequent photoetching stage, so as to leave part of the planar surface stabilized by the oxide layer 8 while the semi-conductor surface is exposed at 9, 10 to permit the application of base and emitter contacts. In the preferred embodiment a P-type base region 4 is formed by boron diffusion into an N-type silicon wafer 1 through an oxide mask 2. A new oxide layer 5 is then provided and photo-etched to provide a hole 6, through which phosphorus is diffused to form the p-type emitter region 7. During this diffusion the active wafer surface is provided with a layer 8 of phosphoric oxide glass. Apertures 9 are then etched through the layers 8, 5 to expose portions of the base region. After being pre-heated to 800‹ C. for approximately 10 minutes the wafer is coated with a photo-varnish by dripping on and centrifuging off, and after exposure through a mask and hardening of the unexposed photovarnish the portion of the layer 8 covered by the exposed photo-varnish is etched away with a 4% solution of hydrofluoric acid buffered with ammonium fluoride. The remaining photovarnish is dissolved, e.g. by acetone. The holes 6, 9 are thus exposed, and aluminium contacts may be evaporated on. Planar transistors made in this way may be part of an integrated circuit.
Patent GB-1427024-A (GB)
Title: Method of making an easy opening container wall, a container wall and a container including a wall
IPC: B21D51/38
Filed: 1973-03-27
Abstract: 1427024 Making caps and rip seams; stamping E C FRAZE 27 March 1973 [27 March 1972] 52270/72 Headings B3A B3S and B3Q [Also in Division B8] To make an easy-opening container wall a double fold is formed in sheet material having radial sections joined by a, cylindrical wall by first relatively displacing the radial sections and thencollapsing the wall. As applied to forming the double fold 51, 53, Fig. 2, beneath the scoreline 23, in a preliminary operation, Fig. 5, a blank, Fig. 4 (not shown), is locally domed and a sloping wall 79 is reduced between coining dies 75, 77. Between further dies, Fig. 6, the blank is re-shaped to form the cylindrical wall 97, radial sections 67, 87, on annular rib 99 and a hollow rivet 95. In another die-set, Fig. 7, the rib 99 is spread to deform the wall 97 and the score-line 23 is formed by a die 129 which also thins an outer cylinder adjacent the line 23. The wall 97 and the rib 99 are now collapsed between further dies, Fig. 8 (not shown), within workholders (137, 139).
Patent GB-1515460-A (GB)
Title: Rackets
IPC: A63B49/08
Filed: 1976-12-15
Abstract: 1515460 Racket handles L MASI 15 Dec 1976 [16 Dec 1975 11 March 1976] 52285/76 Heading A6D The handle of a tennis, squash, badminton or real tennis racket is formed with a central axial bore 2 extending from the free end of the handle, radial passages 4 extending from bore 2 to the outer surface of the handle body, which outer surface is formed with grooves (e.g. grooves 7 or axially extending grooves-Fig. 9, not shown) at least one of the passages (passage 4') coinciding with the free end of the handle body and thus forming a radial groove in the end surface of the handle body, and a cap 8 is fitted to the end of the handle and is formed with an aperture 11 aligned with bore 2 and is spaced by lugs from the end surface of the handle body to form a gap 8'. The cap is formed with apertures 13 in its end wall and 14 in its side wall. The handle body may be of wood, metal or reinforced synthetic resin. A reinforcing nylon tube 3 may line bore 2. The handle is wrapped with tape 6 having holes 5.
Patent GB-525185-A (GB)
Abstract: 525,185. Melamine. HENKEL & CIE GES. Feb. 17, 1939, Nos. 5388 and 5389. Convention dates, Aug. 4, 1938 and Nov. 10, 1938. [Class 2 (iii)] Melamine is prepared by heating dicyandiamide or cyanamide, e.g. to 120‹-250‹C., in a closed vessel at high pressures, e.g. 50-100 atmospheres, in the presence of nitrogen, hydrogen or inert gaseous hydrocarbons such as methane. In examples dicyandiamide is heated for 4 hours at 180‹-200‹C. in the presence of nitrogen at 60 atmospheres pressure or of hydrogen at 100 atmospheres pressure ; melamine is obtained in a yield of 85 or 92-93 per cent. respectively.
Patent GB-1177715-A (GB)
Title: Gas Shielded Arc Torch
IPC: B23K9/29
Filed: 1967-11-22
Abstract: 1,177,715. Welding by fusion. UNION CARBIDE CORP. 22 Nov., 1967 [9 Dec., 1966], No. 53055/67. Heading B3R. A gas (e.g. argon) shielded arc-welding torch T comprises a water-cooled metal body 12 adapted to serve as a heat sink and provided with a thin coating 16 of electrically insulating but heat-conducting material, such as Al 2 O 3  or other ceramic material or a plastic film, of thickness 0À001-0À015 inch, and a tubular metal nozzle adapter 18 carrying the gas nozzle 20 pressure-fitted to the body 12 with the coating 16 therebetween so that heat can flow therethrough. Depending from body 12 is a contact tip 24 surrounding a consumable electrode 28.
Patent GB-533593-A (GB)
IPC: C09F5/06
Abstract: 533,593. Fatty acid esters. BERGER & SONS, Ltd., L. (Sherwin-Williams Co.). Sept. 16, 1939, No. 25973. [Class 2 (iii)] [Also in Group III] Drying oils are obtained from castor oil by completely esterifying the hydroxyl groups with a mono-carboxylic acid, its anhydride or halide, or with a polybasic carboxylic acid which does not form an anhydride during the reaction, and then heating to a much higher temperature to split off the ester-acid radicle and a hydrogen atom from an adjacent carbon atom in each ricinoleic acid chain and so form a second double valency bond therein. Free castor oil fatty acids may be treated similarly ; the modified acids may be used as such or after being esterified with glycerine or other polyhydric alcohol. Acids suitable for the esterification are acetic, butyric, stearic, octadecadienic, aliphatic hydroxy, naphthenic, benzoic, and oxalic acid. Esterification may be assisted by catalysts and controlled by using an inert diluent, e.g. toluene. The decomposition of the ester may be assisted by catalysts, e.g. phosphoric acid, sodium bisulphate, and " Tonsil "; gelation and undesired secondary reactions may be hindered by adding free fatty acids of high m.w., e.g., linoleic, linolenic; and octadecadienic acids before or during this heating ; and the split-off esterification acids may be recovered simultaneously by distillation, e.g. with superheated steam, inert gases, vapours, mechanical agitation, or reduced pressure. In examples :- (1) 300 lb. of raw castor oil is mixed with 105 lb. of acetic anhydride and maintained at 85-95‹C. for 8 hours ; the ester is distilled or washed with water to remove acetic acid and anhydride, then heated rapidly to 310-320‹C., the split-off acetic acid, and small quantities of linoleic acid its isomers and other by-products distil over: (2) 96 lb. of castor oil and 50 lb. of crystallized oxalic acid are heated together, first to 135-150‹C., then to 385‹C., the split-off oxalic acid decomposing into carbon dioxide, monoxide, and water ; (3) a mixture of 100 lb. of n-butyoyl chloride and 200 lb. of benzene is poured into 300 1b. of castor oil at room temperature ; after washing with water to remove hydrogen chloride the ester is decomposed at 270-310‹C., butyric acid distilling over. Specification 487,681 is referred to.
Patent GB-1269410-A (GB)
Title: Pulse discrimination system
Inventor: BICKEL CHARLES EMIL
IPC: G11B20/10
Filed: 1969-11-03
Abstract: 1,269,410. Digital data storage apparatus. BURROUGHS CORP. 3 Nov., 1969 [29 Nov., 1968], No. 53719/69. Heading G4C. In order to discriminate against noise, data pulses are compared with a threshold level which is set as a function of the level of the first data pulse in a group or as a function of a control pulse preceding the group. The use of pulse width or pulse code modulated pulses for setting the threshold level is mentioned. A ready pulse on an address track of a magnetic disc 1 sets a bi-stable 6 and discharges a capacitor 20 through a switch 7. The associated group of data pulses is sensed subsequently by a head 3, and the first pulse of the group, which may solely indicate the level of pulses in the group causes capacitor 20 to charge via switch 27, the voltage on the capacitor following that of the pulse because of the feedback to comparator 21. Provided the pulse amplitude exceeds the reference level at the second input of comparator 22, gate 9 is enabled when the peak of the pulse is detected at 25, and bi-stable 6 is reset so that the accumulated charge is held on capacitor 20. Subsequent data pulse peaks provide outputs from gates 10, 45 provided that their amplitude exceeds the threshold levels derived from capacitor 20 by potential dividers 40, 41 and 43, 44.
Patent GB-1441795-A (GB)
Title: Aximeter
IPC: G07B13/08
Filed: 1973-11-20
Abstract: 1441795 Taximeters YAZAKI SOGYO KK 20 Nov 1973 [1 Dec 1972] 53894/73 Heading G4T In a taximeter, a train of time-related pulses are generated by an electronic oscillation circuit, the time constant of which may be set to a selected one of a number of predetermined values, so that the frequency of the pulse train is compatible with the tariff in force at any particular time. In the preferred embodiment, the time constant of the circuit, Fig. 1 (not shown), is changeable by means of a manually-operable switch for connecting a selected one of three resistors within the circuit. The pulse train, after shaping and amplification, is used to drive an electric motor. When the taximeter speed is less than a predetermined value, the motor output is usual via reduction gears, a clutch, a cam and lever combination and a pawl and ratchet to drive fare indicating wheels, Figs. 2-5 (not shown).
Patent GB-1323732-A (GB)
Title: Starch coated fibres
IPC: C03C25/32
Filed: 1970-11-12
Abstract: 1323732 Drawing glass fibres OWENSCORNING FIBERGLAS CORP 12 Nov 1970 [12 Nov 1969] 53908/70 Heading C1M [Also in Divisions C3 and D1] Sized glass fibre yarns are obtained by drawing glass filaments from a molten supply of glass at high speed, gathering the filaments and combining them into a strand, applying a size to the filaments as they are being drawn, winding the sized strand on the forming tube and conditioning (drying) the strand on the forming tube to reduce the moisture content to facilitate twisting the strand into yarn (size composition in C3U).
Patent GB-1260576-A (GB)
Title: Signal transmission system
IPC: H03F1/56
Filed: 1969-11-05
Abstract: 1,260,576. Transducer local circuit. TEXTRON Inc. 5 Nov., 1969 [12 Nov., 1968], No. 54228/69. Addition to 1,159,777. Heading H4J. Improvements and modifications of the transmission system of parent Specification in which a piezoelectric transducer at one end of a line is arranged to modulate the current drawn from a regulated voltage supply at the other end of the line, the current being monitored at the supply end to provide an output signal from the line, comprise a current modulator including a "charge amplifier" which presents a high capacitive impedance to the transducer, allowing the use of longer leads between the transducer and modulator; a calibration circuit which can be connected in place of the line at the supply end to provide a calibrating A.C. signal; and an alarm circuit which indicates variations of the current drawn from the supply which exceed predetermined limits. Current modulator or "charge amplifier", Fig. 3, comprises an amplifier having an F.E.T. 95, to provide a high impedance input for the transducer connected at 21, with transistors 108, 114, and 122 providing matching to the impedance of the line connected between terminals 24 and 34. D.C. feedback is applied to transistor 101 to stabilize the operating current of F.E.T. 95 with a capacitor 92 providing additional capacitive feedback to provide a high effective input capacitance. Calibration circuit, Fig. 4, comprises an A.C. source 130 of predetermined magnitude connectable to terminal 40 of the regulated supply, Fig. 1 (not shown). Alarm circuit, Fig. 5, comprises a circuit connected across the current monitoring resistor 43 in the supply circuit, Fig. 1 (not shown), and including a transistor 153 which is normally conducting to light lamp 158 but which is turned off by deviation of the supply current to a value below a given lower limit or above a given upper limit. The calibration or alarm circuits may be used alone or in combination with a current modulator as described above or as described in the parent Specification.
Patent GB-1328880-A (GB)
Title: Manufacture of fibre-composite materials
IPC: C22C47/14
Filed: 1970-11-24
Abstract: 1328880 Sintered fibre composite SIEMENS A G 24 Nov 1970 [29 Nov 1969] 55925/70 Heading C7D A fibre-composite is made by sintering a pressed compact comprising mutually aligned fibres and a particulate matrix material. The mean particle size of the matrix material is not greater than the mean diameter of the fibres and not large in comparison with the mean lateral spacing between adjacent fibres. The matrix material may be a ceramic or metallic material and is preferably in the form of platelets, flakes or scales. An example describes the preparation of a composite of silicon nitride whiskers in a copper matrix. A mixture of copper platelets and silicon nitride whiskers are dispersed in water, filtered off, mixed with aqueous methyl cellulose solution, kneaded and then extruded to a blank. The blank is heated in a hydrogen atmosphere to remove the methyl cellulose and then sintered at 700‹C and a pressure of 5 Mkg/cm<SP>2</SP>.
Patent GB-1148780-A (GB)
Title: Improved spinneret assembly for the manufacture of conjugate filaments
Inventor: UEDA KEIZO
IPC: D01D5/32
Filed: 1966-12-19
Abstract: 1,148,780. Conjugate filaments. KANEGAFUCHI BOSEKI K.K., and SNIA VISCOSA SOC. NAZIONALE INDUSTRIA APPLICAZIONI VISCOSA S.p.A. 19 Dec., 1966, No. 56780/66. Heading B5B. A spinneret orifice for a side-by-side conjugate filament has a converging inlet into which protrudes a converging barrier for the flowing together of two streams of conjugate filamentforming materials. According to Fig. 1, annular and axial streams flow together at the apex of an annular barrier 8 of V-shaped crosssection extending into an annular groove 12 of V-shaped cross-section and pass as a plurality of conjugate side-by-side streams through an annular series of orifices 11. According to Fig. 4, the annular and axial streams are each divided into an annular series of streams by means of concentric annular series of orifices 26 and 27 in a plate 22 and flow together around an annular series of conical barriers 28 on the lower side of plate 22 and extending into corresponding conical inlets 29<SP>1</SP> leading to orifices 29.
Patent GB-1327605-A (GB)
Title: Microwave integrated circuits
IPC: H01F1/34
Filed: 1970-12-01
Abstract: 1327605 Printed circuits; microwave strip line circuits LIGNES TELEGRAPHIQUES ET TELEPHONIQUES 1 Dec 1970 [10 Dec 1969] 57121/70 Headings H1R and H1W A non-magnetic substrate for a printed microwave circuit is made from a modified microwave magnetic material. The invention is applicable to circuits containing magnetic components, e.g. circulators, which utilize magnetic substrates or magnetic inserts. Such substrates or inserts have to be physically compatible with the dielectric substrate of the remainder of the circuit. For example, the magnetic substrate or insert may be made from a ferromagnetic spinel of general formula where L, Q, N are one or more of the group Fe<SP>+</SP><SP>+</SP>, Mn<SP>++</SP>, Co<SP>++</SP> Ni<SP>++</SP>, Mg<SP>++</SP>, Zn<SP>++</SP>; R is one or more of the group Fe<SP>+++</SP>, Cr<SP>+++</SP>, Al<SP>+++</SP>, Mn<SP>+++</SP> and Ti is tetravalent titanium. The rest of the circuit uses a dielectric substrate made by modifying this material such that it becomes non-magnetic without change of crystalline habit. This is done by adjusting the formula such that: where X+Y = 100 and x+y+z = 2. Where  the magnetic material is a NiZn ferrite, the dielectric substrate may be made from a composition having the formula Ni 1-a Zn a Fe 2 O 4  where a # 0À9. In the case of ferromagnetic garnets, the dielectric substrate may have the formula Y 3 Fe 5-x Al x O 12  with x # 2À5. The effect of the modifications is to lower the Curie point to below 0‹ C. The circuit of Fig. 8 is printed on a dielectric substrate composed of a non- magnetic modification of the magnetic material used for insert 3 forming the gyromagnetic element of a circulator. Leads which cross the boundary between magnetic and non-magnetic substances are formed by deposition of thick film. The circuit includes stripline 3 db. couplers of known kind, forming a Doppler radar circuit, also of known kind.
Patent GB-1213639-A (GB)
Title: Improved gas filtering system
IPC: F23J11/00
Filed: 1967-12-18
Abstract: 1,213,639. Valves. UNION CARBIDE CORP. 18 Dec., 1967 [28 Dec., 1966], No. 57348/67. Heading F2V. [Also in Divisions B1-B2] Furnace exhaust gas is delivered into a plenum chamber 12 and passes through orifices 16, (18) into fibreglass filter bags 20, (22), through which it is discharged to atmosphere, past valves 24, (26), each comprising a damper 28 which normally rests in the open position shown but is slidable up rod 36, under the pressure of an increased flow through orifice 16 resulting from bag 20 bursting, to close orifice 16. Thereafter filtering flow continues through the other bags, and damaged bag 20 which is mounted accessibly outside chamber 12 may be replaced. Means (not shown) may be provided to clamp the damper in its closed position, and hand hole 32 is provided so that, after replacing a bag, the damper 28 may be pushed down to permit flow through the new bag. Nuts 38 are adjustable to vary the gap between orifice 16 and damper 28 in the open position. Rod 36 is supported by three steel straps 40, 42. Dimensions of a typical valve are exemplified.
Patent GB-1373617-A (GB)
Title: Method and apparatus for transferring toned electrostatic images
IPC: G03G15/16
Filed: 1971-12-14
Abstract: 1373617 Electro-photographic apparatus EASTMAN KODAK CO 14 Dec 1971 [14 Dec 1970] 57975/71 Heading G2H [Also in Division B6] An electro-photographic printing machine comprises a photo-conductive member 1, which may be an endless belt, comprising a photoconductive surface-layer 2 and a light-transmitting conducting layer 3. Latent images are formed on the member, and developed by application of a toner. The developed images are transferred to a receiver 18 by being electrostatically charged, together with the surface-layer 2, by a corona discharge device 28, then brought into contact with the receiver at a nip between a transparent cylinder 4 and an oppositely electrostatically charged roller 24. A lamp 30 within the cylinder 4 causes the surface-layer 2 to become entirely conductive, and so discharge all charges on its surface, leaving only the developed images charged. Alternatively the lamp may be in the roller 24.