baber/WOPTO huggingface dataset:
Patent GB-1447124-A (GB)
Title: Exhaust gas recirculation system having means to estimate actual recirculation rate based on intake and exhaust gas temperatures
IPC: F02M25/07
Filed: 1974-10-02
Abstract: 1447124 Automatic control of flow NISSAN MOTOR CO Ltd 2 Oct 1974 [23 Oct 1973] 42740/74 Heading G3R In a system for maintaining the flow of recirculated exhaust gas in an I.C. engine at a desired value the flow is calculated (by an analogue computer 27) from measurements of the temperatures of the fresh gas Ta, the recirculated gas Te, and the resulting mixture Tm, and a knowledge of their specific heats. The latter may be allowed for by proportioning the resistors in the computer, or their ratio may be assumed to be unity. The output S 1  of the computer is compared at 34 with the desired value 35 which may be constant or derived in unspecified manner as a function of engine speed, temperature and vacuum. The resulting error signal is combined at 36 with a sawtooth generated at 37 to provide pulse control of an electromagnetic valve 20 which regulates the vacuum to a flow control valve 17, 18. The recirculated gas may be introduced to the air inlet as shown or into the induction manifold.
Patent GB-1002294-A (GB)
Title: Improvements in or relating to hyperbolically curved ferroconcrete shells for building construction
IPC: E04B7/10
Filed: 1963-10-30
Abstract: 1,002,294. Shell roofs. W. J. SILBERKUHL; U KASTL AND E. HAEUSSLER. Oct. 30, 1963 [Nov. 28, 1962], No. 42745/63. Heading E1V. Reinforced concrete roof shells 1, curved longitudinally to the arc of a circle, and transversely generally parabolically, are constructed thicker along their longitudinal axes than along their longitudinal edges. In Figs 6 and 7 the short end edges 2 are constructed flat, and in Fig. 7 the whole cross-section thickens towards the shell ends. A typical reinforcement pattern is shown in Fig. 8, with upper and lower meshes 4, 5 and prestressing rods formed into diagonal straps 6.
Patent GB-1063697-A (GB)
Title: Improvements in or relating to hinges
Inventor: POWELL DAVID HAROLD HARMAN
IPC: F16B5/07
Filed: 1963-10-30
Abstract: 1,063,697. Hinges. E. K. COLE Ltd. Oct. 26, 1964 [Oct. 30, 1963], No. 42781/63. Heading E2F. A hinge comprises two plates 1, 1a formed of a plastics material e.g. polypropylene, joined along their straight edges by an integral thin flexible portion 2, each plate having a slot 3 and thin edge portions 7 formed with notches 6, the plates being adapted to slide into a tapered slot (9) in a member (8) to which the hinge is to be attached, the ends of the plates being forced towards each other until protuberances 11 enter recesses (10). The recesses may be open to the reverse side of the plate (8 Fig. 5) and by using an appropriate tool the notches can be disengaged and the plate released.
Patent GB-1020513-A (GB)
Title: Improvements in or relating to the purification of amines
Inventor: STEVENS JOHN RUPERT
Filed: 1962-11-13
Abstract: The secondary amine content of a long chain tertiary amine containing a long chain secondary amine as impurity is reduced by forming two organic phases based on the tertiary amine, each phase including aqueous hydrogen fluoride, the phases differing in the relative concentrations of the secondary amine and hydrogen fluoride.  The "long chain" groups attached to the nitrogen atom are primary alkyl groups containing from 6 to 10 carbon atoms and having a chain of at least 6 carbon atoms terminating at the nitrogen atom.  The secondary amine concentrates in the heavy organic phase whilst most aldehydes and non-basic substances concentrate in the light organic phase.  The two phases may be produced either by treating the impure amine with hydrogen fluoride and water in controlled amounts such that two organic phases are produced or by taking the impure amine in the form of its hydrofluoride salt and partly neutralizing it to give two organic phases.  The quantity of water added may be sufficient to cause the formation of a third, aqueous, phase.  The two organic phases may be separated and neutralized with aqueous NaOH. The lighter of the two organic phases may be subjected to steam distillation to remove volatile impurities and, after steam distillation this lighter phase may be subjected to a further treatment to cause the formation of two organic phases.  Examples describe the purification of impure tri-(3,5,5-trimethylhexyl) amine.
Patent GB-1445637-A (GB)
Title: Fuel metering systems
IPC: F02M23/04
Filed: 1973-09-14
Abstract: 1445637 Spray carburetters ROBERT BOSCH GmbH 14 Sept 1973 [15 Sept 1972] 43212/73 Heading F1B [Also in Division G3] A fuel metering system for an I.C. engine, comprises an air intake passage in which an air measuring element and an arbitrarily actuable throttle valve are disposed in series, a probe in the exhaust pipe operable to provide an electrical signal dependent on the oxygen content of the exhaust gas, and a by-pass around the air measuring element in which a valve closure member is disposed, the valve closure member co-operating with a wall of the by-pass to define a substantially rectangular clearance and the position of the valve closure member being angularly adjustable in dependence upon both the throttle valve angular position and the output of the probe to vary the effective cross-sectional area of the clearance. Intake passage 13 contains a throttle valve 14 and fuel nozzle 15 and has a by-pass 17 which contains valve-member 18, which is rectangular in shape and is hinged along one edge, the free edge of the member describing an arc and co-operating with a wall portion of the by-pass to determine the effective cross-sectional area of the by-pass. The wall portion is plane in a direction parallel to the axis of rotation of the valve-member and is curved in a direction normal to the axis, this wall portion being formed on an exchangeable section of the by-pass wall. The valve-member is mechanically connected to the throttle valve, the coupling being such that an angular displacement of the throttle valve produces a smaller angular displacement of the by-pass valve-member. The valve-member is actuated by a servomotor controlled by a regulating amplifier 25 which receives a first input from the oxygen probe 23, a second input from an engine-driven pulse generator 32 and, as an alternative to the mechanical linkage between the throttle valve and valve-member, can receive a third input from a potentiometer 31, which is representative of the throttle valve angular position. The throttle valve can move through and beyond the maximum opening position, so that it begins to reduce the flow cross-section of the intake passage and during this last phase of the throttle valve movement the valve-member in the by-pass is still approaching its maximum opening position.
Patent GB-1429117-A (GB)
Title: Base fuze for a spin projectile
IPC: F42C15/22
Filed: 1974-10-04
Abstract: 1429117 Projectile fuzes DIEHL 4 Oct 1974 [31 Oct 1973] 43247/74 Heading F3A A base fuze for a spun projectile comprises a firing pin 29, Fig. 1, which upon target impact is pushed into a detonator 35 by its own inertia, or else, after the exceeding of a predetermined flight duration, is pushed into the detonator by a spring 26, which is releasable via a spindependent destructor mechanism, the spring 26 being arranged on a shank 16, a shoulder 17 of which is engaged by a pivoted locking lever 14 which, in its locking position, is overlapped by a lug 18, Fig. 3. The lever 14 is pivoted at 7 and is engaged with the hooked end 9 of a lever 8 carrying an inertia mass 12. Inward movement of the lever 8 under the action of a spring 13 is prevented by a support 11. A segmented sleeve 39, Fig. 1, surrounded by a coiled band 38, blocks the firing pin. In operation, the arm 8 swings outwardly owing to centrifugal force and releases the support 11 but moves inwards again under the action of spring 13 when the spin of the projectile is sufficiently reduced and thereby unhooks the arm 14 so as to release the spring 26. The firing pin, meanwhile, is unblocked by the unwinding of band 38 and the release of segments 39.
Patent GB-1400812-A (GB)
Title: Steam driven diaphragm valve sound transmitter
IPC: B06B1/18
Filed: 1972-09-19
Abstract: 1400812 Foghorn KOCKUMS MEKANISKA VERKSTADS AB 19 Sept 1972 [27 Sept 1971] 43256/72 Heading G5J In a foghorn, to stop the diaphragm 7 from vibrating when no sound is required, steam is fed from the inlet chamber 8 through passages (12, 19, Fig. 3, not shown), to a valve cavity 14 and thence through passages 23, 11 to a back pressure chamber 10. A drain passage (21, Fig. 2, not shown), leading from the cavity 15 to a pipe 22, is of smaller diameter than the passages (12, 19) from the inlet chamber 8 to the cavity 15, so that the flow therethrough does not significantly reduce the pressure in cavity 15 and chamber 10. When sound is required, an electromagnetic actuator (29, Fig. 2, not shown) operates a ball-valve (20) to open a passage (27, 26) to atmosphere, passage (27, 26) being wider than the passages (12, 19) so as to produce a significant drop in pressure in cavity 15 and chamber 10.
Patent GB-1326511-A (GB)
Title: Sun visors for motor vehicles
IPC: B60J3/02
Filed: 1971-09-16
Abstract: 1326511 Sun visors DAIMLER-BENZ AG 16 Sept 1971 [30 Sept 1970] 43264/71 Heading B7S A sun visor arrangement in a motor vehicle comprises two sun vizor panels 4 located alongside each other on a pivot rod (5) Fig. 2 (not shown) so as to extend over the full width of the interior of the vehicle the panels 4 being, downwardly from their non-use position pivotable into their position of use in a direction counter to the forward direction of travel, the region of the pivot rod (5) being provided with an abutment for the panels to abut against when in a substantially vertical in use position. A softly padded cover strip 7 is provided to cover the pivot rod and abutment.
Patent GB-1076252-A (GB)
Title: Improvements in or relating to high voltage resistors for use in potential dividers
Inventor: JARVIS ROY EDWARD
IPC: H01C1/16
Filed: 1962-11-16
Abstract: 1,076,252. Resistors. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Jan. 21, 1964 [Nov. 16, 1962], No. 43409/62. Heading H1S. A high voltage resistor includes a resistor element surrounded by a screen of high permittivity dielectric material, whereby the capacitance between earth and parts of the resistor element other than the terminals is substantially eliminated. As shown, a spiralled cracked carbon film resistor element 1 is surrounded by two concentric rows of rods 19A, 19B made of a titanium dioxide ceramic. Alternatively the screen may comprise powdered titanium dioxide or barium titanate packed between cylinders of methyl methacrylate. The resistor is suitable for use in potential dividers in high voltage measuring equipment.
Patent GB-1406954-A (GB)
Title: Cover for an electrolytic cell
IPC: C25B9/00
Filed: 1973-09-18
Abstract: 1406954 Electrolytic cell cover SOLVAY & CIE SA 18 Sept 1973 [10 Oct 1972] 43713/73 Heading C7B A cover 1 in an electrolytic cell comprises an upper part 3 and a lower part 2 assembled separably in a leak-proof manner such that part 2 may lift momentarily under the action of a predetermined excess internal gas pressure. Part 2 is above the working electrolyte level and may be of electrolyte-resistant concrete held in place by its own weight or of a synthetic plastic such as polyester held in place by springs mounted on rods which guide the lifting movement. Brine electrolysis in a diaphragm cell is specified, the cover providing protection against explosive recombination of H 2  and Cl 2 .
Patent GB-1177643-A (GB)
Title: Manufacture of Pile Carpets and the like and Pile Fabrics.
Inventor: COUSEN JOHN SIMONETT
IPC: D04H11/00
Filed: 1966-04-15
Abstract: 1,177,643. Making pile fabrics. J. S. COUSEN. 14 July, 1967 [15 April, 1966], No. 43726/65. Heading D1K. Tuft yarn spools 5 insert pile yarns 7 between the yarns of two parallel warps 1, and the ends of the pile yarns are gripped by jaws 12 on an endless chain. The spools travel downwards faster than the warps 1, so that the pile yarns are brought close together where they search a knife 15 which cuts them to length. Two sheets 16 of hessian coated with thermoplastic or thermosetting material (which may be foamed) are applied to the opposite ends of the pile tufts and are set in a zone 21; a knife 23 cuts the structure into two pile fabrics. It is stated that fabrics may be made singly instead of face-to-face; that the apparatus may be disposed horizontally; that the hessian and/or the warps 1 may be finally removed.
Patent GB-1487964-A (GB)
Title: Carburetter for an internal combustion engine
IPC: F02M17/09
Filed: 1974-10-10
Abstract: 1487964 Spray carburetters ALFA ROMEO SpA 10 Oct 1974 [10 Oct 1973] 44021/74 Heading F1H [Also in Division F2] A fuel metering orifice 37 in a carburetter is defined by an aperture 38 in a thin wall 36 relative to and against which a further thin wall 35 is slidable to vary the effective flow cross-section of the aperture dependent upon the position of the induction passage air valve 12. The valve 12 is operated in response to operation of the throttle valve 14 by a diaphragm 21 subject to the pressure between the valves or by a mechanical linkage between the valves, Figs. 2 and 3 (not shown), or the air valve (164), Fig. 5 (not shown) may be an eccentrically mounted spring-biased valve. The aperture (127), Fig. 4 (not shown), may be formed in the end-wall (126) of an angularly adjustable hollow plug (121) to provide varying registry with an aperture (129) in a wall (128) mounted for calibration adjustment. Slot apertures (195, 196, 204), Figs. 6 and 7 (not shown), defining variable orifices each supplying a respective induction passage of a carburetter have their effective flow cross-sections controlled by respective angularly movable walls (183, 184, Fig. 6), or by the wall of a hollow cylinder (202, Fig. 7), axially movable within a cylinder (203) defining the apertures. To control the air-fuel ratio of the mixture supplied by the carburetter the emulsion well (142, Figs. 4 and 5), may be vented to the constant level fuel chamber (137) which has vents (154, 155) controlled by respective needle valves (156, 157) operated by a  bi-metal strip (158) responsive to engine temperature and a bellows (159) responsive to ambient temperature and pressure, respectively.
Patent GB-983575-A (GB)
Title: Improvements in or relating to the manufacture of frozen confectionery and moulding apparatus therefor
IPC: A23G9/44
Filed: 1962-11-21
Abstract: 983,575. Ice-making. J. OLDHAM. Nov. 21, 1963 [Nov. 21, 1962], No. 44071/62. Heading F4H. Frozen confectionery is produced by forming a first part thereof in a first freezing stage, disposing said first part adjacent the mouth of a mould containing further confection material to be frozen and freezing said further confection material in a second freezing stage to form a second part of the confectionery which is joined to the first part. As shown, a first set of mould trays 20 each containing a plurality of moulds and a stick holder from which sticks depend into each mould is passed through a first freezing tank to freeze the confection material within the moulds. The trays are then passed to a defrosting stage 41 comprising a vertically movable tank 42 of a defrosting material and a lifting device 43 which is adapted to engage the stick holder and raise it together with the depending frozen first parts of the confectionery on defrosting thereof. The stick holder is then moved by a conveyer 52 to a lowering device 51 which lowers the holder into one of a second set of mould trays 21, the stick holder being supported in mould tray 21 so that the bottoms of the frozen parts 1 depend into moulds 11 containing further confection material, as shown in Fig. 6. The further confection material is frozen to the first parts 1 during the passage of trays 21 through a second freezing tank 59 to a second defrosting stage 61 where the stick holders and the completed confectionery are removed from the moulds by a lifting device 63 and are supplied to a packing station (not shown) by a conveyer 66. The mould trays 20 are passed from defrosting stage 41 via a washing device and a filling device to the inlet side of tank 40 to receive a stick holder which has been returned from the packing station and filled with sticks from a magazine. Trays 21 are also returned from defrosting stage 61 to a position beneath lowering device 51 via washing and filling stages. The completed frozen confectionery has flat, parallel sides and irregularly shaped edges (Figs. 1 and 2, not shown), or, alternatively, each portion of the confectionery may have upwardly diverging side walls.
Patent GB-1467805-A (GB)
Title: Electrical control systems
IPC: H04Q9/00
Filed: 1973-09-21
Abstract: 1467805 Electrical control system STANDARD TELEPHONES & CABLES Ltd 19 Sept 1974 [21 Sept 1973] 44378/73 Heading G4H An electrical control system comprises a central station connected over a single signal path to a number of controlled points, each point being allocated a time position in a repetitive cycle of time positions. A receiver (Fig. 2, not shown) at each point is responsive only to signals in its respective time position. Each signal is a 1 or 0 signal dependent on which of two conditions a controlled device at a point is to be set to, or in which of two possible directions a controlled device is to be influenced, the signals for a device continuing in the 1 or 0 state for as long as the command is to last; a command signal is only considered valid if it occurs at the same time position in at least two successive cycles.  The central station (Fig. 1, not shown) may comprise multiplexers (M1, M2) controlled by counters (C1, C2); and each receiver may comprise a signal-detecting gates and flip-flops controlled by programmed counters (C1, C2). The system may comprise a common clock pulse generator for the transmitter and all the receivers, and pulses of opposite polarities may be used for the clock pulses and the command signals. Digital or sampled analog data may be sent back from each point to the central station; it may be sent back along the command signal path, when each device's time position consists of two portions, one for commands and one for data. The system may be installed in a vehicle, when the central station includes dashboard switches, the controlled devices include headlamps, heaters, &c., and the data includes fuel level, oil pressure, &c. The system may alternatively be installed in a building, when the signal wiring may be combined with a (ring- main) power supply conductor. It may also be used for continuously controlling apparatus such as a TV camera, when two time slots are used for each controlled function (azimuth, elevation, focus, &c.), one for each of its directions.
Patent GB-1114556-A (GB)
Title: Ceramic article and method of making it
Inventor: SMITH GAIL PRESTON
IPC: C03C27/00
Filed: 1965-10-20
Abstract: An article is made by mixing a batch of crystalline material and thermally devitrifiable glass, forming the batch into an article, sintering at between the sintering and deforming temperature, and cooling.  The glass is devitrified during the sintering step, and is converted at least in part to the same crystalline phase as the crystalline material.  The batch may comprise by weight 50-95% crystalline material and 50-5% glass. The crystalline material and glass may be lithia-alumino silicate; or the crystalline material may be basalt, silica or feldspar.  The articles may be formed e.g. by slip-casting, or by dipping or immersing an organic carrier e.g. of paper, cellulose acetate, or nylon, into a batch comprising an organic vehicle or binder and then drying, shaping and firing.  The organic materials volatilize during firing.  The firing temperature may be 1170-1330 DEG  C.  More than one firing step may be performed, e.g.: (a) heating to 700 DEG  C., (b) holding, (c) heating from 700 DEG  to 1220 DEG  C., (d) holding, (e) cooling to room temperature, (f) refiring to 1240 DEG  C., (g) holding, (h) cooling.  The coefficient of thermal expansion of an exemplified body is e.g. (- 4.9 to + 4.1) x 10-7/ DEG  C.
Patent GB-1434728-A (GB)
Title: Compositions and articles containing phospine oxides having a physiological cooling effect and phosphine oxides for use therein
IPC: A23L27/20
Filed: 1972-09-27
Abstract: 1434728 Tobacco compositions: food preparations WLKINSON SWORD Ltd 6 Sept 1973 [27 Sept 1972] 44622/72 Headings A2B and A2C [Also in Divisions A5, C2, C5 and C6] An edible or potable composition, including chewing gum and confectionery, or a tobacco preparation including snuff and pipe or cigarette filters, contains as a physiologically active ingredient capable of stimulating the cold receptors of the nervous system of the body a phosphine oxide of the formula: wherein R, is an alkyl radical containing at least 3 carbon atoms, R 2  is an alkyl radical containing at least 3 carbon atoms or a cycloalkyl radical and R 3  is an alkyl or cycloalkyl radical, R 1 , R 2  and R 3  together having a total of from 13 to 17 carbon atoms, and at least one of R 1 , R 2  and R 3  having carbon to carbon branching in an α, # or γ position, relative to the phosphorous atom, the term "branching" being defined as including not only branched chain alkyl groups but also cyclic structures in which a carbon atom attached to phosphorous and which is thus in the α position with respect to phosphorous is attached to two ring carbon atoms as in the case when either of R 2  and R 3  is cycloalkyl. Specified edible compositions are ice cream, jellies, chocolate, boiled sweets, mints, candy, cachous and chewing gum, and flavouring or colouring agents may also be present. Examples are given for the preparation of a boiled sweet containing sucrose, citric acid and a small amount of npentyl-isobutyl sec-butyl phosphine oxide and for the impregnation of cigarette tobacco or cigarette filter tip with sec-butyl n-hexyl-isopropyl phosphine oxide.
Patent GB-1030408-A (GB)
Title: Automatic refrigeration and defrost system
Inventor: KAPEKER MARTIN
IPC: F25B47/02
Filed: 1962-11-26
Abstract: 1,030,408. Refrigerating. THERMOVAC INDUSTRIES CORP. Nov. 26, 1962, No. 44657/62. Heading F4H. In a refrigeration system comprising a compressor 10, condenser 12, heat exchanger 16 and an evaporator 22 the latter is defrosted by hot gas supplied directly thereto from the compressor through ljne 44 and a re-evaporator 24 is provided in the suction line 42a to evaporate refrigerant condensed in the evaporator. The re-evaporator includes an electric heater 58 and an oil return line 64. Defrosting is effected at pre-determined time intervals by a timer 38 which opens a valve 54 in the line 44, de-energizes a fan 20 blowing air over the evaporator and energizes the heater 58 which is controlled by a device 62 responsive to the temperature in the re-evaporator as sensed by a sensing element 60. The line 44 includes a portion 46 in heat transfer relationship with a drip tray 50 and its outlet 52.