baber/WOPTO huggingface dataset:
Patent GB-1153893-A (GB)
Title: High Frequency Transistor
Inventor: WALKER JOHN SIDDALL
IPC: H01L21/00
Filed: 1966-07-29
Abstract: 1,153,893. Transistors. TEXAS INSTRUMENTS Ltd. 29 July, 1966, No. 34239/66. Heading H1K. A transistor comprises a semi-conductor body with an annular base region containing a plurality of spaced, discrete emitter regions and interdigitating ohmic contact electrodes to the emitter and base regions. In the NPN embodiment shown in Figs. 1 and 4, a silicon N + body 2 has deposited thereon an N-type layer into which is diffused impurity to produce annular P-type base region 1. In this region, a plurality of discrete emitter N-type zones 3 are produced, three such zones underlying each of the fingers 10 which project from annular ring 9, the fingers and ring constituting the emitter contact. Contact to the base zone is provided by by fingers 7 which project from a central region 6 which overlies an oxide layer on the silicon wafer. The collector contact is formed by a deposited layer 11, to which is soldered metallic disc 17 with projecting wire or stud 18. Connection to base contact region 6 is provided by disc 14 and wire 13 and to the emitter contact by a flat ring 15. The contacts may be provided by providing a molybdenum and a gold coating, and the connection thereto may be provided by gold-plated copper elements soldered with gold/ indium or gold/germanium alloys. The emitter portions may consist of discrete radial strips instead of a plurality of regions in the area corresponding to the strips. The device is enclosed in a glass or ceramic cup 27 with lid 28 or alternatively, may be potted, the arrangement is thus suitable for coaxial assembly.
Patent GB-1012971-A (GB)
Title: Improvements in skim craft
IPC: B60V1/00
Filed: 1964-02-18
Abstract: 1,012,971. Air cushion vehicles. A. P. PEDRICK. Feb. 18, 1964, No. 35266/62. Heading B7K. A " skimming wing " craft for movement over, and in close proximity to, a surface of water and having a main hull of aerofoil section has power units mounted on, or within, the hull between the transverse vertical plane through its longitudinal mid-point and its stern or trailing edge, the thrust of the power units being sufficient to sustain the craft at such a forward speed that the craft is supported by aerodynamic lift. The hull in plan form is substantially rectangular and comprises a main passenger body 1 of aerofoil section surrounded at the centre by an enlarged aerofoil section 5 which supports a control cabin 9 and a longitudinal fin 10 and tail surfaces 11, 13. Lateral aerofoil sections 16, 16<SP>1</SP> fit closely over the lateral edges of section 1 and are arranged to telescope thereover whereby the plan area of the craft may be varied. Two gas-turbine engines 15 are mounted on section 5 and two similar engines 20, 20<SP>1</SP> on sections 16, 16<SP>1</SP>. A further embodiment discloses a similar craft propelled by turbo-prop engines and in a still further embodiment the hull is formed with multiple decks and the propulsion system comprises gas-turbines driving water-propulsion paddle wheels, air for the engines being drawn from slots in the top surface of the body to improve its lifting properties. Alternatively, gas-turbines may be used as ejectors to convert water drawn up by scoops into steam jets for forward propulsion. Specifications 929,853 and 936,762 are referred to.
Patent GB-504309-A (GB)
Title: An improved apparatus for testing the quality of grain and flour
IPC: G01N7/22
Filed: 1937-12-10
Abstract: 504,309. Testing flour or grain. KLELJN, A. Dec. 10, 1937, No. 34287. [Class 58] A device for testing the quality of flour or grain by determining the quantity of gas developed by fermentation, in a liquidsealed space, of a quantity of dough made from the flour or from meal of the grain comprises a glass bell 14 suspended by a loop 16 and wire rod 15 from the arm of a balance ; a tube 21 extends from a screwed ring 17 situated at the top of the bell sideways and downwards along the side of the bell to a hole 24 provided in a ring-shaped member 25 around the rim of the bell. Another pipe 26, connected at its lower end by a cross-piece 27, extends parallel to the pipe 21 for a vertical distance H and opens into the bell. A small diameter aperture extends from the bottom of a projection 28 on the member 25 into the hole 24. The dough or grain ball is carried in a dish 32 supported in the bell by a spring bridle 31 clipped into recesses in the member 25. When the dough has been placed on the dish, the bell is attached to the balance and immersed in a container containing a liquid such as paraffin. The liquid will rise inside the bell to the height of the upper end of the pipe 26, air escaping through the pipe 26, cross-piece 27 and pipe 21 ; a liquid seal then forms in the pipes 26, 27 and 21. The gas developed by the fermentation will then gradually force down the level of the liquid in the bell.
Patent GB-1370223-A (GB)
Title: Methods of treating waste gases
IPC: F23G7/07
Filed: 1972-07-21
Abstract: 1370223 Consuming waste gases by combustion SUMITOMO CHEMICAL CO Ltd 21 July 1972 34319/72 Heading F4B Toxic nitrogen oxides are removed from waste gas by burning with a fuel gas containing heavy hydrocarbons in the presence of a catalyst, steam being added in an amount between 0À5 and 3À0 parts by weight to each part by weight of the fuel gas. In the production of nitric acid by oxidizing ammonia a waste gas is evolved containing nitrogen monoxide, nitrogen dioxide (0-2 to 0À4% by volume) and oxygen (2 to 3% by volume). The fuel gas may contain hydrocarbons higher than ethylene and/or aromatic hydrocarbons. The added steam prevents carbon formed by the breakdown of these hydrocarbons being deposited on the catalyst. The preferred amount of steam is 1À5 to 2 parts by weight. The catalyst may be a honeycomb structure of platinum, palladium and/or rhodium, with or without nickel. Alternatively a base metal oxide can be used.
Patent GB-1447151-A (GB)
Title: Collision sensor
IPC: B60R21/00
Filed: 1974-08-05
Abstract: 1447151 Inertia switches NISSAN MOTOR CO Ltd 5 Aug 1974 [17 Aug 1973] 34374/74 Heading H1N A collision sensor for a vehicle which, in use, is responsive to predetermined deceleration in a range of azimuth angle but is not responsive to up and down vibration of the vehicle when running, comprises an insulating housing 12, a fixed contact 26, a mass 18 swingably mounted in said housing and movable to abut on said fixed contact 26, and a resilient leaf spring strip 20 in a U-shape with one leg secured to the housing 12 and the other leg fixed to said mass 18, the plane of the U-shape being, in use, perpendicular to the up and down vibration, while the axis of symmetry of the U is transverse relative to the direction of motion of the vehicle. As shown the housing 12 has tapped holes 16 for attachment of a flat cover (14, Figs. 2 and 3, not shown) and a magnet 22 assists the spring 20 in holding the mass 18 in its initial position. Two stops 32 and 34 in the form of posts are located as shown such that when a force at an angle outside the arrow P acts on mass 18 the strip 20 engages post 32 before the mass 18 engages contact 26, and forces outside arrow Q cause engagement of strip 20 with post 34; this ensures that only forces acting substantially between the arrows P, Q cause closure of the contacts 18, 26. The dimensions of the legs and bight of the U shape may vary (as, for example, in Figs. 4(A), 4(B) and 4(C), not shown) and the material, width and thickness of the strip 20 are preferably arranged to give a sensitivity curve as in Fig. 7 (not shown). In another embodiment (Fig. 8, not shown) the response to up and down vibration of the vehicle is further reduced by the provision of two U-shaped resilient strips (20<SP>1</SP> and 20<SP>11</SP>) disposed on opposite sides of the mass (18<SP>1</SP>) and in a common plane.
Patent GB-887644-A (GB)
Title: Improvements in or relating to struts for use between steel mine arches and like constructional members
IPC: E21D11/28
Filed: 1956-11-13
Abstract: 887,644. Struts for mine arches. ODDIE, J. M., and INGHAM & SONS Ltd., JOHN. Jan. 29, 1958 [Nov. 13, 1956; July 9, 1957], Nos. 34597/56 and 21662/57. Class 20(2) A steel strut 2 of channel or U-shaped crosssection, Fig. 2, suitable for use with mine arch girders is provided with flat extensions 2 terminating in V-shaped ends 9 adapted to be bent around the flanged portions of a girder, see Fig. 4 (not shown). The strut 1, Fig. 5, may have side flanges 5 cut away to define flat portions 2 having clamping brackets 11, 12 welded or bolted thereto.
Patent GB-412495-A (GB)
Title: Manufacture of asphalt solutions
IPC: C08J3/09
Filed: 1933-12-08
Abstract: Asphalt solutions, for use as coating compositions &c., are made by using as the solvent benzine to which has been added a small proportion of one or more organic compounds containing a hydroxyl group which do not themselves dissolve asphalt, e.g. butanol, diacetone alcohol, and glycol mono-esters or ethers.  In an example, 40 parts by weight of Gilsonite are dissolved in 60 parts of a solvent consisting of 96 per cent of benzine and 4 per cent of diacetone alcohol.  Usual additions such as pigments, fillers, resins and drying oils may be incorporated.ALSO:Asphalt solutions are made by using, as the solvent, benzine to which has been added a small proportion of one or more organic compounds containing a hydroxyl group which do not themselves dissolve asphalt, e.g. butanol, diacetone alcohol, and unilaterally esterified or etherified glycols. In an example, 40 parts by weight of Gilsonite are dissolved in 60 parts of a solvent consisting of 96 per cent of benzine and 4 per cent of diacetone alcohol.  Usual additions such as pigments, fillers, resins and drying oils may be incorporated.  The solutions may be used for coating articles, for impregnating and binding fibrous, powdered and granular materials &c.
Patent GB-1221153-A (GB)
Title: Blowing agents for plastics
Inventor: TAKAHASHI TOSHIMASA
IPC: C08J9/10
Filed: 1969-07-09
Abstract: 1,221,153. Blowing agents. TORAY INDUSTRIES Inc. 9 July, 1969, No. 34610/69. Heading C3C. A blowing agent for plastics comprises azodicarbonamide and a chromium alum (M 2 SO 4 - Cr 2 (SO 4 ) 3 ), a bichromate (M 2 Cr 2 O 7  or M<SP>1</SP>Cr 2 O 7 ), a chromate (M 2 CrO 4  or M<SP>1</SP>CrO 4 ), chromium trioxide (Cr0 3 ) or a chromium halide, where M is a monovalent metal cation, e.g. Na or K, or an ammonium ion and M<SP>1</SP> is a divalent metal cation, e.g. an alkaline earth metal, Cu, Sn or Pb. The other chromium compound may be chromium trichloride; sodium, potassium, ammonium; calcium, barium or lead bichromate or chromate ; or ammonium, sodium or potassium chromium alum.
Patent GB-878058-A (GB)
Title: Improvements relating to anchoring devices comprising screw-threaded inserts and locking means therefor
Inventor: CUMMARO LOUIS ALBERT
IPC: F16B37/12
Filed: 1957-11-06
Abstract: 878,058. Securing studs to work ; screw sockets. PHILLIPS SCREW CO. Nov. 6, 1957, No. 34635/57. Class 89(1). An insert, e.g. an internally screwed bush 19, Fig. 1, or a stud 44, Fig. 3, has an externallyscrewed body 10 or 46 for engaging a complementary screwed bore in a workpiece of relatively softer material, and is locked therein by a ring 14 or 54 having depending prongs 28 or 58 engaging slots 24 or 48 in the insert 19 or stud 44 and radical teeth 32 or 62 to bite into the borewall. The insert is screwed into place by a tool engaging the slots to a depth such that the ring prongs can be engaged with the slots before the teeth engage the bore-wall, and the ring is then driven to abut the opposed end of the insert. The prongs are set in from the outer periphery of the ring and the insert has a chamfer 34 to accommodate chips cut by the teeth 32.
Patent GB-175605-A (GB)
Title: Improvements in or relating to the manufacture of hydrogen by partial liquefaction of mixtures of gases containing the same
IPC: C01B3/50
Filed: 1921-12-23
Abstract: 175,605. Soc. L'Air Liquide, Soc. Anon. pour l'Etude et l'Exploitation des ProcÚdÚs G. Claude. Feb. 17, 1921, [Convention date]. Separating gaseous mixtures by liquefaction.- In the separation of hydrogen from gaseous mixtures such coke-oven or coal gas by liquefaction, the final cooling which effects the purification of the hydrogen being effected by the expansion of hydrogen with external work, the fraction of the compressed gases which feeds the liquefier in which the hydrogen is warmed before expansion is withdrawn from the heat exchanger at a distance from the cold end. In the apparatus shown, the compressed gas enters a heat-exchanger E through a pipe H and passes through its outer portion; a part is drawn off at the point A and led through a liquefier L from which it passes to the base D of a separating column M, to which also the remainder of the gas from the exchanger is led through a pipe controlled by a valve V. The extent of opening of this valve is controlled, for example by thermo-electric couples, so that the hydrogen which circulates around the liquefier is sufficiently ,heated. The more volatile constituents rise through the tubes F of the separator, and are led through the outer portion of the liquefier and through an expander N to the outer portion of the separator column, the liquid formed being collected in separate fractions in the separator and the gases, hydrogen and carbon monoxide for example, being led into separate zones of the exchanger at the points B, C. The apparatus may be filled by passing the gas through a valve- V<1> into the expander N, the liquid formed being passed through the top of the separator and through a valve V" to the base of the separator column. A proportion of cold dry nitrogen may be added to the hydrogen before its expansion,. to increase the cooling effect and serve for lubrication. Specifications 136,837 and 174,327 are referred to.
Patent GB-617077-A (GB)
Title: Improvements in multiple electrode arc welding
IPC: B23K9/067
Filed: 1945-12-21
Abstract: 617,077. Uniting by fusion. BABCOCK & WILCOX CO. Dec. 21, 1945, No. 34715. Convention date, Dec. 22, 1944. [Class 83 (iv)] [Also in Group XXXV] In a method of arc welding wherein a number of phase-spaced arcs produce a pool of weld metal common to all of them, the arcs are energized from a single polyphase source and maintained at a uniform phase difference of less than 180 degrees between the arcs, and each arc is supplied independently and continuously with weld metal, the relative movement between the arcs and the weld zone being co-ordinated with the rate of fusion, while the voltage of each arc is controlled independently. The example shows a system comprising three welding-heads 14, 16, 18 mounted independently on a common support or head slide 136, Fig. 2, carried by a horizontal ram bracket 128 and vertical bracket 124 secured to a platform 100. The platform is traversed along the upper edge of a longitudinally extending plate 10 by a motor 12 driving a pinion 110 meshing with a rack 112 on the support 10. The three welding-head brackets 138-140 are adjustably secured to the head slide 136, and the welding-heads carried by the brackets are adjustable thereon in two planes at right angles, e.g. head 14, Fig. 2, can be swung about a trunnion 146 in the forked end of a bracket 142 which can be rotated about a horizontal axis on bracket 140 by a worm 144 and a pinion operated by an adjusting wheel 154. The electrodes 1-3 carried by the welding- heads are each connected to a separate phase of a 3-phase supply fed by a transformer system, the connections of which may be such that the phases feeding the arcs are displaced by 60 or 120 degrees, the 60 degree arrangement producing a predominant attraction between the arcs. The feed of each electrode is effected by a small D.C. motor 26 mounted on its welding-head, the motor being fed over leads 30, 32 from an automatic arc control device 34 in accordance with the voltage across leads 36, 38, connected to the electrode and work 40 respectively, (the arrangement for head 14 only is shown in Fig. 1). The control device 34 is connected to an A.C. supply and embodies a rectifier. The facilitate operations under the arrangement wherein the work is inclined, and welding is effected on an upward gradient, e.g. in flux smothered welding, the arc is maintained parallel with the work during the travel of the welding heads by imparting to the latter a vertical movement which is coordinated with the rate of horizontal travel, effected by motor 12, by providing a motor 170 which is geared to a vertical shaft 132 in screw-threaded engagement with the transverse portion of the bracket 128, whereby the latter is moved upwardly under the guidance of a pair of vertical rods 126 extending from it through vertical bores in the bracket 124. A hand-wheel 130 is also provided at the lower end of shaft 132.
Patent GB-897791-A (GB)
Title: Improvements in and relating to universal joints and couplings
Inventor: MOULTON ALEXANDER ERIC
IPC: F16D3/28
Filed: 1959-10-14
Abstract: 897,791. Universal joints. MOULTON DEVELOPMENTS Ltd. Dec. 21, 1960 [Oct. 14, 1959], No. 34833/59. Addition to 842,242. Class 80 (2). The Hooke's joint for motor cars &c. of the parent Specification, comprising a central spider having radiallydirected arms 2 to each of which is bonded a frustoconical rubber bush 3 surrounded by an axially split two-part shell 5 bonded thereto and tightened upon the bush to squeeze the rubber by a single U-bolt carried by a yoke on one of the connected shafts, is modified by rounding the ends 10 of the radially-directed arms so that they are at least partially covered by the rubber of the bushes 3.
Patent GB-1534319-A (GB)
Title: Electrical filter networks
IPC: H03H19/00
Filed: 1976-08-20
Abstract: 1534319 Active filters A C COSSOR Ltd 5 Aug 1977 [20 Aug 1976] 34855/76 Heading H3U An N-path filter has its switches S1 ... S4 controlled by variable mark/space ratio signals so that periods can occur when no switch is closed and a further switch S5 is provided for disconnecting the output of the filter from the input during such periods. As shown, the filters in each path are simple first order RC sections but alternatively, Fig. 2 (not shown) second order Butterworth filters may be employed. The variable mark/space controls the bandwidth.
Patent GB-789194-A (GB)
Title: Improvements in or relating to washing machines for bearings
Inventor: HENSBY STANLEY WILLIAM NORMAN
IPC: C23G3/00
Filed: 1955-12-07
Abstract: 789,194. Cleaning bearings. E.M.O. INSTRU. MENTATION, Ltd. Aug. 17, 1956 [Dec. 7, 1955], No. 35140/55. Class 12 (1). Apparatus for cleaning bearings comprises a seating 12, adapted to engage one of the races of a bearing 13 to be cleaned, and a spray device 15 containing channels 18 which are so arranged relative to the seating that jets of cleaning liquid forced through the channels strike the bearing 13 and cause relative rotation of the bearing races. The seating 12 is mounted on a saucer-shaped member 8 carried by the lid 6 of a reservoir 5 containing cleaning fluid. The spray device 15 is mounted in an inverted cup-shaped member 14 attached to a pivoted arm 24. A pump 19, disposed within the reservoir 5 and operated by a plunger 20, delivers cleaning fluid through a flexible pipe 17 to the spray device 15. A filter 21 is arranged on the input side of the pump 19.
Patent GB-1453173-A (GB)
Title: Dental patients chairs
IPC: A47C7/40
Filed: 1974-08-09
Abstract: 1453173 Dental chairs/cushions SIEMENS AG 9 Aug 1974 [10 Aug 1973] 35273/74 Headings A4J and A4M The backrest 11 of a dental chair is upholstered on the rear surface by a panel 7 of unitary construction, the panel 7 being resilient at least in a direction perpendicular to its surface. Preferably the resilient material 19 is cellular plastics injected into a mould containing a plastics envelope 20 and a stiffener 18. The stiffener 18 may be of wood fibre pressed with resin, deep drawn plastics or metal sheet, or glass fibre reinforced material. The foam may be disposed only on the rearward side of the stiffener. Screw studs 21 anchored to the stiffener 18 may be passed through holes in the backrest and be secured by nuts. A backrest cushion (6) and a seat-legrest cushion (8), Fig. 1 (not shown) may be provided for the occupand. The former (6) is conveniently attached to U-shaped fitments (12) on the backrest by studs (13) on the cushion (6). The other (8) is attached by the engagement of U-shaped fittings (14) on the cushion with studs (16) on the seat. Specification 1377666 is referred to.
Patent GB-1158032-A (GB)
Title: Photographic Film Processor
IPC: G03D5/04
Filed: 1966-08-08
Abstract: 1,158,032. Film processing. ITEK CORP. Aug. 8, 1966 [Aug. 17, 1965], No. 35434/66. Heading G2A. Photographic film is supported in and propelled through a processor by jets of fluid directed on both sides of the film surface so as to be applied thereto only at spaced intervals and thereby form a discontinuous cushion of fluid. As shown in Fig. 1 the film 2 is passed between two rows of deflectors 4, and is supported and propelled between the deflectors by fluid sprays issuing from spray bar 3. Various deflectors of different shapes are disclosed, Fig. 3-6 (not shown), and in one embodiment, Fig. 9 (not shown), the fluid spray tube and deflector are integral. The spray bar 3 may issue two types of sprays, a light spray for processing the film, and a spray of greater force at a more acute angle to the film for supporting and propelling of the film. A processing unit, Fig. 7 (not shown), includes two such units, one above the other, the film being directed from the upper to the lower by means of a further semicircular unit using air as the fluid.
Patent GB-412174-A (GB)
Title: Improvements in or connected with systems for the transportation of goods by water in barges or containers
IPC: B60M7/00
Filed: 1932-12-15
Abstract: 412,174. Canals; locomotives for canals. COOMBS, J. A., 12, Princes Park Avenue, Golders Green, London. Dec. 15, 1932, No. 35517. [Class 68 (i).] A goods transport system comprises in combination a multi - channelled canal or waterway, at least one rail or plateway, and a locomotive running on the rail and connected to the barges to be hauled. In the construction shown in Fig. 1 a canal is divided into two waterways by a central partition 2 so that the stream set up by the passage of barges in one part does not affect the barges in the other part. The barges are hauled by electric locomotives 5 travelling on an overhead rail 1<a> suspended by means of posts 4 and members 3, 2<a>. In a modification the central partition 2 of the canal is raised to about the level of the rail 1<a>, and is formed with a continuous gangway on top, a rail 1<a> being fixed to each side of the gangway. The barges may be provided with fenders or wheels to prevent damage by rubbing against the sides of the canal. Branch docks or bays may be formed in each waterway. The barges may be transferred from one waterway to another by cranes, and from one level to another by inclined railways. Where a single overhead rail 1<a> is used double sections are provided at passing places. A suitable locomotive is employed which is supported by non- propelling wheels running on the rail 1<a>, propulsion being effected by means of an endless chain of electromagnets, this chain being driven by an electric motor and the magnets being automatically energised and de-energised to cause the chain to adhere and to be free from the rail.