baber/WOPTO huggingface dataset:
Patent GB-1389689-A (GB)
Title: Glass-ceramic bodies
IPC: C03C3/076
Filed: 1972-08-07
Abstract: 1389689 Glass-ceramic bodies OWENSILLINOIS Inc 7 Aug 1972 [5 Aug 1971] 38364/73 Divided out of 1389688 Heading C1M A transparent glass-ceramic body comprising at least two portions having different refractive indices is produced from a thermally crystallizable glass body by (a) subjecting a first portion of the body to a temperature sufficient to nucleate and crystallize the glass to form a glass-ceramic portion; and (b) heat-treating another portion of the body to form a second glass-ceramic portion which has a different refractive index to the first portion. The method can be used to form an optical path through a body of lower refractive index, or to form a "flat-lens" by successively treating concentric rings of a glass block or sheet. The crystallizable body may be heat-treated using a laser beam, to allow accurate heating of a desired zone. Portions of the glass-ceramic body may be further heat-treated to render them opaque. Suitable crystallizable glasses consist of, in weight per cent, (i) SiO 2  29, Nb 2 O 5  52, K 2 O 19; and (ii) SiO 2  66À9, Al 2 O 3  20À9, Li 2 O 3À9, TiO 2  1À8, ZrO 2  2À0, CaO 3À5, Na 2 O 0À7, Sb 2 O 3  0À3. Alternatively, crystallizable glasses as claimed in Specifications 1,389,688 or 1,389,690 may be used.
Patent GB-1437256-A (GB)
Title: Vacuum circuit interrupter
IPC: H01H33/662
Filed: 1973-08-14
Abstract: 1437256 Vacuum switches ALLIS-CHALMERS CORP 14 Aug 1973 [21 Aug 1972] 38461/73 Heading-H1N In a vacuum switch of the kind having a tubular insulating housing 12 with end caps 14, 16 through which the contacts 23, 24 extend, a particle-intercepting metallic shield 40 is formed by a pair of opposed cup-shaped members 41, 42 assembled in overlapping relationship around the contacts 23, 24 and supported by mounting means 64, 59 from the end caps but maintained at a floating potential with respect to the contacts. The means 64, 59 may be insulating rods with end openings seated on aligned spotwelded projections 62, 63 and 56, 58 on the members 41, 42 and end caps 14, 16. Alternatively the ends of the insulating rods may be metallized and brazed to the shield and end caps. The lower cup-shaped member 42 may be slotted to form resilient tabs 57 which may deflect on assembly of the switch, but maintain electrical contact with the other member 41.
Patent GB-1447117-A (GB)
Title: Telecommunications transmission systems
IPC: H04B10/291
Filed: 1973-08-15
Abstract: 1447117 Light guides SIEMENS AG 15  Aug 1973 [3 Oct 1972] 38517/73 Heading G2J [Also in Division H1] In an optical transmission system in which a semi-conductor laser 1 is used to amplify light passing along a waveguide a frequency selective filter is provided to limit the system bandwidth to that of the light information being transmitted. This enables broadband noise to be removed. The filter can be a multi-layer dielectric reflector 2, Fig. 1, angled to reflect unwanted frequencies at the output of semi-conductor laser 1 into an absorbing layer 6. Alternatively a frequency selective dopant (A) may be added to the optical waveguide, Fig. 4 (not shown), or the waveguide may be suitably etched or irradiated to produce refractive index variations and a filter action.
Patent GB-1193935-A (GB)
Title: Sealing Boot
Inventor: MORSE MILTON
IPC: F16J15/52
Filed: 1968-08-13
Abstract: 1,193,935. Switch casings. M. MORSE. 13 Aug., 1968, No. 38569/68. Heading H1N. [Also in Division F2] In a sealing boot for a toggle switch comprising a nut element 11 and a boot element 12 surrounding and bonded to the nut element and including a thin-walled flexible portion 21 tapering away from the. nut element and terminating in a sleeve 29 having a bore 32 for the switch toggle (not shown), the portion 21 is reinforced by a rib 24 on its inner surface 22. In a modification, Fig. 8 (not shown), the reinforcing rib (25b) is formed on both the inner and outer surface of the flexible portion (21b). The nut element 11 and boot element 12 are preferably of metal and silicone rubber, respectively.
Patent GB-341676-A (GB)
Title: Improvements in or relating to the destructive hydrogenation of coal, oils and the like
IPC: C10G1/06
Filed: 1929-12-17
Abstract: The used hydrogen from a destructive hydrogenation process is purified by washing with oil under pressure and below 0 DEG  C. Gaseous products leave the reaction vessel 1 by a pipe 7 and pass to a condenser 8 and catchpot 9.  The impure hydrogen passes by a pipe 11 to a heat-exchanger 12 where it is cooled to -20 DEG  C., and is then washed in a tower 14 with cold gas oil supplied by an injector 21.  The supply of gas oil may be regulated so as to wash out principally ethane, or methane and ethane together. <PICT:0341676/III/1> The gas may be washed further in a second tower 16, from which it returns through the heat-exchanger 12 to the vessel 1.  The pressure on the solvent gas oil may be released completely in the vessel 25, or partly there, and partly in vessel 27.  The methane and ethane evolved may be passed to a cracking plant 39 for production of hydrogen.  The release of pressure in the vessel 25 may be so arranged that it releases an amount of nitrogen equal to that added with the make-up hydrogen by the pipe 3.  In this case the nitrogen is released through an expansion engine 37 and a valve 38. The gas oil returns through coolers 31, 35 to the towers 14, 16. Specifications 13627/87, 408/98, [both in Class 55 Gas manufacture], and 331,509 are referred to.
Patent GB-1146153-A (GB)
Title: Improvements in or relating to the desalination of seawater and other saline waters
Inventor: NEWSON IVAN HENRY
IPC: C02F1/04
Filed: 1965-09-10
Abstract: 1,146,153. Flash distillation; desalination of water. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 12 Oct., 1966 [10 Sept., 1965], No. 38660/65. Heading B1B. Water is desalinated in a tower comprising a multistage flash evaporation section 12 which is disposed at the side of a condensation section 15 filled with a dense oil insoluble in water, e.g. dichloro-tetrafluorobenzene. Brine, e.g. sea water, is heated and then introduced into the lower portion of section 12 of the tower, which is maintained at such pressure that flash vaporization of some of the water occurs as the sea water rises upwards from stage to stage. The steam passes through disentrainment means 26 in dividing wall 14 and into section 15 where the steam condenses by contact with the oil. Baffle plates 23 ensure the efficient distribution of droplets of condensate; and these collect at the upper portion of section 15. The condensate, i.e. desalinated water, flows out of section 15 through conduit 24; and the concentrated brine flows out of the upper portion of section 12 through conduit 4. As shown, the concentrated brine passes to waste through heat exchanger 3 where it preheats sea water being supplied to the system by pump 1. The preheated sea water flows through conduit 6 to liquid/liquid contactor 7 wherein the sea water flows upwards through hot oil introduced into the contactor through conduit 8. The heated sea water, which forms a layer at the upper portion of the contactor, is then conveyed by pump 10 and conduit 11 to the lower portion of flash section 12. Cool oil is withdrawn from the base of contactor 7 and is pumped through conduit 16 into the upper portion of condensation section 15. The oil, withdrawn from the base of section 15, is passed through heater 20 and then recirculated through conduit 8 into the upper portion of contactor 7.
Patent GB-941942-A (GB)
Title: Improvements in or relating to mincing machines
IPC: B02C18/00
Filed: 1961-10-30
Abstract: 941,942. Mincing-machines. C. SCHNELL, [trading as C. SCHNELL MASCHINENFABRIK]. Oct. 30, 1961 [Nov. 4, 1960], No. 38727/61. Heading A4C. To avoid unnecessary wear the cutters in a perforated plate type mincing machine are pivotally mounted in carriers and are only pressed against the perforated plate when sufficient material e.g. meat, vegetables, to be minced is present. As shown, Fig. 2, a cutter 8 is secured in the slot 9 in a cylindrical rod 10 rotatably mounted in a bore 11 of a carrier 3 and pivotal movement (and axial movement of the bolt) is limited by a pin 12 in the carrier engaging in a perijherally directed slot 14 in the bolt 10. The carrier 3 may itself have a toothed cutting edge 6. The cutter 8 may be spring-loaded against a stop to held it clear of the perforated plate during idling or starting up.
Patent GB-1370983-A (GB)
Title: Calculator
IPC: G07B15/02
Filed: 1972-02-15
Abstract: 1370983 Calculator SUWA SEIKOSHA KK 15 Feb 1972 [17 Feb 1971] 38913/72 Divided out of 1370982 Heading G4A A calculator, e.g. of the kind described in Specification 1,370,981, includes a means for entering two time quantities expressed in hours and minutes or hours, minutes, and seconds into the calculator, a means to add or subtract the time quantities to produce a time indication in hours and minutes or in hours, minutes, and seconds, a means to multiply the time indication by a charge per unit time, and a cash register to indicate the charge calculated by the multiplying means. One of the time indications may be provided by a timing device and a printer may be provided to print the time indicated by the device. Specifications 1,370,982, 1,370,984 and 1,370,985 are referred to.
Patent GB-878543-A (GB)
Title: Improvements relating to drying apparatus
IPC: D06F57/00
Filed: 1959-11-17
Abstract: 878,543. Drying apparatus; drying closets. CREWS, P. E. M. Nov. 17, 1959 [Nov. 19, 1958], No. 38972/59. Classes 34(1) and 34(2) A freshly laundered article 22 is dried in an upright position between a pair of open work frames 10 which are held apart by means such as clothes-peg type spacers 20 and are suspended from suitable supports by hooks 18. A hood may be provided above, and a drip-tray beneath, the frames and various spacers are described in the Specification with reference to Figs. 3a to Figs 3d (not shown). The frames may be supported on a stand including a drip-tray. Skins may also be dried hetween the frames.
Patent GB-1100334-A (GB)
Title: Variable ratio power transmission system
Inventor: LAMBURN ALAN SALISBURY
IPC: F16H37/08
Filed: 1964-03-25
Abstract: 1,100,334. Change speed gears. AXEL WICKMAN TRANSMISSIONS Ltd. 25 March, 1965 [25 March, 1964], No. 39126/67. Divided out of 1,100,333. Heading F2D. [Also in Division B7] A power transmission system as in Figs. 1, 2 of Specification 1,100,333, the claims specifying that the output shaft of the main change-speed gear is parallel to the output shaft of the engine driving the system and to half-shafts connected to vehicle road wheels, and is coaxial with the input shaft of an overdrive or underdrive gear and passes through the input gear of transfer gearing which connects the output shaft of the overdrive to the half-shafts.
Patent GB-1446221-A (GB)
Title: Discarboxylic acid derivatives and processes for their manufactur
IPC: C07C237/20
Filed: 1973-08-20
Abstract: 1446221 Dicarboxylic acid derivatives CIBAGEIGY AG 20 Aug 1973 [24 Aug 1972] 39285/73 Heading C2C The invention comprises compounds of the formula wherein A denotes a direct bond or a methylene group which may be unsubstituted or substituted by a lower alkyl radical, one of the groups R 1  and R 2  denotes hydrogen, halogen, lower alkyl, lower alkanoyl, lower alkoxy, free or acylated hydroxyl or free or acylated amino group, trifluoromethyl or nitro, and the other denotes a saturated cycloaliphatic radical which may be unsubstituted or substituted by one or more of the same or different lower alkyl groups, each of X 1  and X 2 , which may be the same or different, denotes a free, esterified or amidized carboxyl group or X 1  and X 2  together with A and the quaternary ring carbon atom may represent a cyclic imide group, and n denotes an integer from 1 to 3, and salts of acids and bases of the general Formula I. The term lower indicates radicals containing up to 7 carbon atoms. The compounds may be prepared by reacting compounds of the formula with a reactive functional derivative of a compound of the formula HO-A-X 1 , and if desired converting the resulting compound of Formula I or a salt thereof into another compound of Formula I or a salt thereof. The compounds may be used in pharmaceutical compositions.
Patent GB-984546-A (GB)
Title: Travelling wave tube
Inventor: CLARRICOATS PETER JOHN BELL
IPC: H01J25/40
Filed: 1962-10-18
Abstract: 984,546. Travelling wave tubes; electromagnetic waveguides. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 18, 1963 [Oct. 18, 1962], No. 39451/62. Headings H1D and H1W. A backward-wave travelling wave tube has a delay line in the form of a composite waveguide 1 which has an inner dielectric core 3 and an outer dielectric sleeve 2, the permittivity of the material forming the core being greater than that of the sleeve. A longitudinal groove 4 formed either in the outer surface of the core or in the inner surface of the sleeve allows the passage of an electron beam from a gun 5 to a collector 6. The device shown operates as an oscillator, or a wave input coupler may be provided at the collector end of the waveguide for operation as an amplifier. The core may be composed of titanium dioxide having a permitivity of 95 while the outer dielectric may be polystyrene moulded with titanium dioxide having a permitivity of 6.25.
Patent GB-807385-A (GB)
Title: Process for making porous plastic plates and plastic plates so produced
Inventor: RABL RICHARD
IPC: H01M50/463
Filed: 1956-12-28
Abstract: 807,385. Moulding battery separators &c. JUNGFER, L. [trading as AKKUMULATORENFABRIK DR. L. JUNGFER]. Dec. 28,1956, No. 39539/56. Class 87(2). Ribbed porous plates of plastic material, e,g. polyvinyl chloride, suitable for separator plates for accumulators, are formed by sintering under heat and pressure a layer of said material which has been applied with local thickened portions. The pressure on the heated layer is at least mainly restricted to said thickened portions which form reinforcing ribs. The layer of material is applied to a moving support 3, Figs. 1 and 2, which has continuous longitudinal grooves 20, from a hopper 1 which is supported by arms 2, and the layer is modified in shape at the top by a box-like device 5 carrying a scraper edge 9 which is notched at 21. The device 5 is connected to a pivoted arm 6 and has a bar 8 which rests on side rails 4. The notches co-operate with the corresponding grooves 20 to form the thickened portions. After heating, said pressure is applied by roller 26 (not shown) to form ribs. In a modified process Figs. 4 (not shown) and 5, a mould plate 30, having discontinuous grooves 31 in rows and columns of three, separated transversely by strips 32 and longitudinally into groups of four by rails 40a (not shown) is passed beneath three adjoining feeding devices, one for each group, each similar to that used in the previous process. A layer with thickened portions thus applied to plate 30 is heated and then selectively pressed on the plate between the platens 33, 34, of a press, Fig. 5. Platen 33 carries a complementary mould plate 35 which also has shoulders 38 to compact the material along strips 32 and a knife edge 39 to produce an incision therein. Other polyvinyl compound powders such as the acetate, carbazole and polystyrene and polycompounds of acrylic or methacrylic acid series and esters of polymethacrylic acid may be used.
Patent GB-943774-A (GB)
Title: Method of producing cooking receptacles, frying pans and similar pottery articles with metal coating
IPC: A47J36/02
Filed: 1961-11-06
Abstract: Glazed or unglazed pottery cooking vessels such as frying pans are coated externally by metal spraying with a thin layer of a metal which in oxide form is present in the glaze or biscuit if unglazed of the pottery and then by metal spraying or electrodeposition with a heat conductive coating of another metal. The inner layer of metal may be of lead but is preferably of aluminium and the outer of copper. The pottery vessels may be heated before application of the inner layer of metal and when the inner layer is of aluminium its thickness may be 0.05 mm.ALSO:Glazed or unglazed pottery cooking vessels such as frying pans are coated externally by metal spraying with a thin layer of a metal which in oxide form is present in the glaze or biscuit if unglazed of the pottery and then by metal spraying or electrodeposition with a heat conductive coating of another metal. The inner layer of metal may be of lead but is preferably of aluminium and the outer of copper.  The pottery vessels may be heated before application of the inner layer of metal and when the inner layer is of aluminium its thickness may be 0.05 mm.
Patent GB-1456466-A (GB)
Title: Burner control system
IPC: F23N5/02
Filed: 1974-09-11
Abstract: 1456466 Burner control ELECTRONICS CORP OF AMERICA 11 Sept 1974 [17 Sept 1973] 39641/74 Heading F4T [Also in Division G3] A control circuit for a burner system has a sensor 10, Fig. 1 which can sense the state of a fuel valve, pilot valve, or absence of flame &c., and provide a signal to a logic control circuit 12 including a solid state switching element, the circuit being adapted to produce a pulse train output signal in response to the state signal, an actuator 30 for actuating a controllable device 2, and circuit means connected between the output from the logic control circuit and the actuator and adapted to provide an actuating signal for the controllable device in response to a pulse train signal at the logic circuit output, but not otherwise. A self-checking circuit for controlling fuel valve 2 in a burner system comprises three sub-circuits Fig. 1, a control circuit 4, a fuel valve-actuating circuit 6, which operates in response to the output from circuit 4, and a comparison circuit 8 to supervise circuit 6. In operation, sensors 10 sense the state of fuel valves, medium to be heated, flame in the combustion chamber, &c., and transmit signals to a burner logic circuit 12 which produces a control signal at its output 15, for actuating fuel valve 2 in response to a call for heat. A set of normally open flame relay contacts 16 controlled by the sensors are closed when a flame is present in the combustion chamber so as to connect an A.C. power source 18 to an A.C.-D.C. converter 20 which is connected to logic circuit 12. The outputs from converter 22 and logic circuit 12 are supplied to AND gate 24. In response to a pulse train signal from AND gate 24 an energizing circuit is completed between fuel valve 2 and a power source 30 through circuit breaker contacts 46, and normally closed Burner-off Switch 32. Circuit 8 continuously monitors the fuel valve condition and compares this with the signal supplied by circuit 4 to circuit 6. If the closed state for valve 2 is indicated by one compare input signal and the other compare input signal indicates an open state, circuit breaker contacts 46 are opened. And gate 24 transmits a pulse train signal from converter 22 to open valve 2 only if a signal is present at the converter. Should the compare signal in line 43 disappear, breaker contacts 46 open, fuel valve 2 closes, and Burneroff Switch 32 de-energizes valve 2. An alternative fuel valve actuating a comparison circuit Fig. 4 (not shown) comprises an additional pulse train-to-D.C. signal converter (88). An alternative control circuitry Fig. 5 (not shown), includes sensing signal inputs (90-118) which supply pulse train signals to converters 192-194, to produce actuating signals at leads 195-197 for an ignition transformer pilot fuel valve, and main fuel valve. The circuits for converter (26), converter (22) are described in relation to Figs. 2 and 3 (not shown) respectively and an alternative comparison circuit Fig. 8 (not shown) is described.
Patent GB-1010654-A (GB)
Title: Rotary piston expansion engine
IPC: F02B75/02
Filed: 1961-11-06
Abstract: 1,010,654. Rotary piston internal combustion engines. G. STAMMBERGER. Nov. 6, 1961, No. 39680/61. Heading F1F. A rotary piston internal combustion engine of trochoidal type including a stationary housing 1, Fig. 2, having a bi-arcuate peripheral wall 12 and end-plates through which a driveshaft 4 axially extends, and a triangular piston 3 supported by a roller bearing 6 mounted on an eccentric 5 of the shaft 4 for planetary rotation within the housing includes a roller 15 (or pinion), Fig. 2, freely rotatable on the shaft 4 in engagement with an internal circular profile 16 of the piston (or gear ring) fixed to the piston to control the rotation of the piston.
Patent GB-856061-A (GB)
Title: Improvements in or relating to the manufacture of dynamo-electric machines
IPC: H02K15/06
Filed: 1957-12-20
Abstract: 856,061. Winding coils for dynamo-electric machines. GENERAL ELECTRIC CO. Ltd., DAVIS, L. A., and TOMPSETT, L. C. Dec. 22, 1958 [Dec. 20, 1957], No. 39764/57. Class 35. Stator or rotor slot windings are first wound on to a mandrel comprising four pins 8 and then forced off these into the slots. In one form, Fig. 1, wire 13 is fed in a single or double layer on to the pins by means of a cranked tube 10 carried on a pair of cranks 15, and then, with the pins placed in a position over the slots, an ejector plate 17 descends and forces the wire into the slots. In a modification, Fig. 4, in which the slots to be wound are external, both the core 1 and winding mandrel 7 rotate together about axis 19 in the position shown to wind wire on to pins 8. This wire is then forced off the pins by ejector 17 as before. The slots may be skewed, and the necessary motions of the various parts may be produced manually or automatically.
Patent GB-951099-A (GB)
Title: Process and apparatus for the partial oxodation of hydrocarbons
Inventor: HUGHES EDWARD MORGAN
IPC: C07C2/78
Filed: 1960-11-18
Abstract: <PICT:0951099/C3/1> Unsaturated hydrocarbons, e.g. acetylene, are obtained by the partial combustion of a saturated hydrocarbon, e.g. methane, by passing the preheated reactants into the inlet ends of a plurality of mixing tubes which form at their outlet end the burner section of a combustion chamber and which have a length to radial width ratio of at least 30, preferably about 40, which radial width is less than the quenching distance (i.e. below the critical limit for preventing the propagation of a flame), the gas through-put velocity through the tubes being such that the residence time in the tubes is less than the flame induction period but sufficient to obtain a high degree of homogeneity.  The radial width is the diameter in a circular cross-section tube and the difference in diameters of inner and outer tubes in an annular cross-section tube. In Fig. 3 oxygen enters by pipe 10 and passes through tubes 12 which discharge into, are coaxial with and movable in relation to venturis 11.  Inserts 14 impart a swirling motion to the gas. Methane enters through pipe 19 and passes through openings 9 to enter the venturis around the tubes 12.  The gases are preheated above the spontaneous ignition temperature.  The flame at the outlet end of the mixing tubes 15 is stabilized by pilot oxygen introduced through annular inlets 34 surrounding the mixing tubes and/or through the optional tubes 40 running along the centres of the mixing tubes. Specification 951,098 is referred to.