baber/WOPTO huggingface dataset:
Patent GB-1023081-A (GB)
Title: Plate heat exchangers for use at high pressures
Inventor: KONRAD OTTO
IPC: F28F3/08
Filed: 1962-12-28
Abstract: 1,023,081. Plate heat exchangers. BADISCHE ANILIN- & SODA-FABRIK A.G. Dec. 28, 1962 [Dec. 30, 1961], No. 48765/62. Heading F4S. A stacked plate heat exchanger for use with high pressure heat exchange fluids is housed in a cylindrical pressure vessel. As shown, the pressure vessel comprises a cylindrical casing 1 closed by end plates 4, 5 held by threaded rings 17, 18 respectively and having 0-ring seals 19, 20. A piston 24 in the casing 1 has portions 24, 25 the diameters of which correspond to the bores 21 and 22 respectively of the casing, each portion having an 0-ring seal. A stack 7 of identical circular plates 6 is housed in the smaller bore 21 of the casing and is held between the piston 24 and the end plate 4, peripheral seals 14 being provided between the plates. Each seal 14 is combined with a rigid support member which carries the main compressive load applied to the stack, to prevent crushing of the seals. One heat exchange fluid enters the upper chamber through an inlet 8 and passes through a bore 30 in piston 24 into alternate spaces in the stack of plates, being finally discharged through an outlet 10. The annular space between the stack 7 and the casing 1 is pressurized by some of this fluid passing through a bore 36 in the piston 24. The second fluid, at a lower pressure than the first, enters the stack 7 through an inlet 11 and flows through the remaining spaces between the plates 6, leaving the stack through a pipe 33 fixed in a bore 31 in the piston and slidable in an outlet 9 in the end plate 5. The seals 14, of a plastics material, have to withstand only the pressure differential between the two fluids, and the stack 7 is compressed axially by a force equal to the pressure of the first fluid multiplied by the difference between the areas of the upper and lower bores 22, 21 of the casing. In a second embodiment, not shown, using metallic seals 14 when the temperatures or pressures are too high for plastics seals, the piston 24 is dispensed with and the casing has a single parallel bore housing the plate stack.
Patent GB-1025679-A (GB)
Title: The preparation of organic compounds containing a carbonyl group and compositions for use therein
IPC: C07C45/28
Filed: 1962-12-31
Abstract: Olefins are converted to carbonyl compounds containing the same number of C atoms by contacting, in the liquid or vapour phase, optionally with oxygen, at 25 DEG  to 170 DEG  C., 1 to 100 ats. optionally diluted with steam, with a contact agent comprising component (1) which is from (100-1 x 10-5) % to 97% of MoO3 or a heteropoly-acid or a salt thereof and from 1 x 10-5% to 3% of component (2) which is Pt or Pd metal or a compound of Pt or Pd comprising at least 1% of component (1), at least 1 x 10-5% of component (2) and a support up to 100%. Ethylene is oxidized to acetaldehyde, styrene to acetophenone, propylene to acrolein or acetone.  Other starting materials specified butene to dodecene, buta and pentadienes, cyclopentene and cyclohexene.ALSO:Olefines are oxidized to carbonyl compounds in the presence of Pt or Pd metal or a compound thereof and MoO3 or a heteropolyacid or salt, if desired supported on a carrier.  The heteropolyacid acid may be a phospho-, tungsto- or silico-molybdic acid a mixed hetero acid e.g. silicomolybdo anadic acid, or the co-ordinated atom may be Ti, Ge, Cr, Sn and B. Pumice, Kieselguhr ZrO2, ThO2, clays. Al2O3, TiO2 or SiO2 may be used as carriers.  The surface area of such carriers is preferably 8-200 sq. m/gm.
Patent GB-1532965-A (GB)
Title: Diffuser for use with a centrifugal compressor rotor and a combination thereof
IPC: F04D29/44
Filed: 1975-12-01
Abstract: 1532965 Cenrifugal compressors DEERE & CO 1 Dec 1975 [4 Dec 1974] 49203/75 Heading F1C A diffuser for use with a centrifugal compressor rotor comprises diffusion passages 28 of which the longitudinal axis 42 follows an at least approximately logarithmic spiral path which may be approximated to by a circular arc having a centre 50 located on a raduis 58 which is perpendicular to the direction 56 at which gases leave the compressor impeller at the design speed. Adjacent diffusion passages 28 intersect at their radially inner ends to provide a semi-vaneless diffusion space 68 lying within a circle 66. For ease of manufacture, each. diffusion passage 28 may be formed by milling the two halves 14, 16 of the diffuser to afford a cylindrical part 76 radially inwardly of a plane 70 which intersects the circle 66 at the radially inner side 72 of the diffusion passage, a part 78 extending from the plane 70 to a plane 80 and a part 82 extending beyond the plane 80. The parts 78 and 82 have divergence angles of 3 degrees and 6 degrees respectively. A shockwave located near the plane 70 reduces the initially supersonic velocity. (Mach number about 1.5) to a subsonic velocity.
Patent GB-1105920-A (GB)
Title: Improvements in vehicle axle assemblies
IPC: B21D53/88
Filed: 1965-11-23
Abstract: 1,105,920. Vehicle suspensions. ROCKWELLSTANDARD CORPORATION. 23 Nov., 1965 [20 April, 1965], No. 49789/65. Addition to 1,094,793. Heading B7D. A vehicle axle assembly comprises a single spring 112 made by the method of Specification 1,094,793, a mounting block 130, 132 and liners 136 of plastics material between the spring and the mounting block.
Patent GB-1490068-A (GB)
Title: Floating marine structures for research or exploration
IPC: B63B35/44
Filed: 1974-10-28
Abstract: 1490068 Stabilizing marine structures C A NICOL 28 Oct 1974 [26 Oct 1973] 49919/73 Heading B7M A ship's hull 1 has a portion 2 of each of the bilges formed with a recess 3. Separable bilge tanks 2A are shaped to fit each recess and each tank is retractable to a position below the hull by struts 8 fastened to the tank.
Patent GB-1359696-A (GB)
Title: Musical instruments
IPC: G10H1/14
Filed: 1971-10-28
Abstract: 1359696 Electrical musical instruments CHICAGO MUSICAL INSTRUMENT CO 28 Oct 1971 [30 April 19.71] 50150/71 Heading G5J The harmonic content of a signal during its attack or decay is varied by keying circuits 13, Fig. 1, and is also dependent upon the volume selected. Signal sources 11a to 11n are connected through the keying circuits 13 to conventional formant circuits 16 and audio section 17, 18, 19. The keying circuits each comprise a transistor 26, Fig. 2, and means for determining the attack and decay of the signal, comprising capacitor 36, diode 38 and resistor 37. When a corresponding key 14a is closed on to voltage supply bus-bar 33 the capacitor is charged through resistor 37 and when the key is released the capacitor 36 rapidly discharges through diode 38. Thus a relatively slow attack and fast decay are provided. If the diode is reversed a fast attack and slow decay results as in a piano voice. Due to the action of further capacitor 25 and resistor 34 the transistor does not pass the full duration of the signal pulses arriving at 12a and when key 14a is closed, the charging of capacitor 36 results in not only a rise in the signal amplitude at the transistor collector but also a gradual decrease in the duration of the signal pulses (Fig. 3, not shown). Therefore during the attack the signal fundamental frequency is kept constant but the harmonic content of the signal is gradually altered. The voltage supply bus-bar 33 is also coupled to a circuit 20 (also Fig. 5, not shown) for applying tremolo. The volume control 17 also determines the D.C. voltage on bus-bar 33 and therefore the eventual signal amplitude appearing at the transistor collector. As the signal amplitude and duration are inter-related (Fig. 3, not shown) the volume control therefore also determines the harmonic content of the signal. The various signal sources 11a to 11n are connected to conductors 12a to 12n which are mutually coupled by capacitors 21, 22 &c. the capacitors being provided by discrete components or merely by the close proximity of the conductors to each other. Therefore if, for example, key 14a is pressed not only is the signal from source 11a passed but also, to a lesser extent, the signals from sources 11b to 11n. Due to the decrease in input impedance of corresponding circuit 13 during the attack the mutual coupling effectively gradually decreases and the overall effect is to simulate the attack of a wind instrument.
Patent GB-1523470-A (GB)
Title: Door safety fastener mechanism
IPC: E05B47/04
Filed: 1975-12-08
Abstract: 1523470 Remotely-controlled door fastenings TELEKONTROLL AB 8 Dec 1975 [12 Dec 1974] 50262/75 Heading E2A A door fastener electrically operable by remote control comprises a bolt 1 attached to a hinge 3 and an electromagnetic keeper 7. The hinge can be attached to a door 2 with the keeper 7 on the frame. Interruption of the current permits the door to be pushed open, the pushing displacing the bolt from the fastening position. For Figures see next column
Patent GB-1459535-A (GB)
Title: Propagation structure for magnetic bubble domains
IPC: G11C19/08
Filed: 1974-11-20
Abstract: 1459535 Magnetic storage arrangements INTERNATIONAL BUSINESS MACHINES CORP 20 Nov 1974 [27 Dec 1973] 50341/74 Heading H3B A bubble domain propagation path is formed with a symmetrical pattern of semicircular undulations along its length, and a bubble domain coupled to an undulating path edge is propagated by an in-plane rotating magnetic field along that edge in a direction determined by the edge to which it is coupled. The path may be defined by a permalloy strip 14, Fig. 1, or by a corresponding pattern formed by ion implantation of the bubble supporting sheet 12. A vertical bias field MS provides bubbles such as bubble 34, this bubble being propagated along an edge 18 from semicircular portion 22 to a corresponding position on an adjacent semicircular portion 24 by a single rotation in a clockwise direction of the in-plane field. With bubbles 34, 36, Fig. 3, moving in opposite directions along respective undulating edges 18, 20, mutual interference when the bubbles are adjacent in dips such as 30, 32 is prevented by apertures 48, each aperture having a permanent bubble 50 rotated along its periphery by the in-plane field. In a modification, Fig. 4, the propagation path is formed by an inverted double-strip permalloy pattern 14<SP>11</SP>.
Patent GB-1183385-A (GB)
Title: Improvements in and relating to Semiconductor Devices
Inventor: LAMMING JACK STEWART
IPC: H01L29/00
Filed: 1967-03-31
Abstract: 1,183,385. Transistor gain control circuits. ASSOCIATED SEMI-CONDUCTOR MFRS. Ltd. 31 March, 1967, No. 50710/69. Divided out of 1,183,384. Heading H3T. [Also in Division H1] The subject matter of this specification is entirely contained in Specification 1,183,384, but the claims relate to a transistor having a low resistivity region contiguous with and forming a PN junction with the collector region and which is connected to the base region by a low resistance connecting path so that the depletion regions caused by reverse biasing the collector/base junction and the junction between the collector region and the low resistivity region both extend into the collector region and provide automatic gain control.
Patent GB-1144236-A (GB)
Title: Space frame structures, particularly for use in buildings
Inventor: HOLTER ALBERT
IPC: E04C3/04
Filed: 1966-11-15
Abstract: 1,144,236. Floor or roof structures. DOMINION BRIDGE CO. Ltd. 15 Nov., 1966, No. 51157/66. Heading E1W. A steel or aluminium floor or roof structure for a building comprises parallel lower tie members 15, or e.g. channel-section, surmounted by lattice beams 11 with sinuous webs 14 and upper and lower angle-section booms 13, which beams are arranged with a zig-zag cross-section with parallel upper channel-section ties 16. The lattice beams may be tack welded to the lower ties 15, and to each other, and then the upper ties may be tack welded in position, with a final rigid welding after assembly, or the members may be rigidly welded together as the structure is built up.
Patent GB-1499918-A (GB)
Title: Composition for pickling metals
IPC: C01B15/037
Filed: 1975-12-18
Abstract: 1499918 Metal pickling composition PRODUITS CHIMIQUES UGINE KUHLMANN 18 Dec 1975 [14 Jan 1975] 51908/75 Heading C7E A metal pickling composition contains 10- 400 g/l H 2 SO 4 , 2-80 g/l of 100% H 2 O 2  and either(a) 0.3-2 g/l of a surfactant obtained by polycondensation of ethylene oxide on fatty alcohols or (b) 10-500 mg/l of a stabilizer chosen from neutral hydroxy-8-quinoline sulphate, phthalylsulphathiazole 8-oxyquinoline, 5-sulpho- 6-methyl-8-oxyquinoline, 5-nitro-8-hydroxyquinoline, 5-sulpho-8-oxyquinoline and oxyquinoline salicylate, or both (a) and (b).
Patent GB-1181138-A (GB)
Title: Improvements in or relating to Chimneys
IPC: F23J13/02
Filed: 1967-11-15
Abstract: 1,181,138. Chimneys. ROSENGRENS PLAT AB. 15 Nov., 1967 [18 Nov., 1966], No. 51974/67. Heading F4J. A chimney, which extends from a boiler outlet socket 4 through a flooring 1 and roof structure 2, comprises a smoke flue 5 which is surrounded by a first or inner jacket 6, the space therebetween being filled with a suitable heat insulating material, such as burnt expanded clay, and a second jacket or outer jacket 7 spaced from said first jacket, the jackets 6 and 7 being composed of a number of stacked prefabricated elements 8 which are placed on top of each other and are closed by means of a cover 9, said jackets being so disposed that the assembled elements constitute a number of individual ventilation air ducts. The jackets 6, 7 are both of square cross-section, being turned an eighth of a revolution relative to one another, the corner of the jacket 6 being secured to the longitudinal side median line of the outer jacket (see Fig. 3), each element thus having a smoke flue and four ventilation ducts which are all separated from each other. The elements 8 are supported by a structure 10 which is placed on the flooring 1 and comprises T-irons 11 and bottom portion 12 which closes the space between the jackets 6 and 7, the inner jacket 6 extending from the structure 10 to the boiler outlet 4 with the aid of a section 13 which is insertable from below into the inner jacket 6. The cover 9 (see Fig. 6) includes an outer casing (20) which extends from the smoke flue to the outer jacket, parts (6a, 7a and 21).denning the top of the ventilation shafts, and an envelope 15 for sealing and taking up heat expansion movements between the smoke flue 5 and the cover 9. Angle irons (17, Fig. 7) are provided at the upper and lower end of each element 8, between the uppermost element and the cover 9 and between the bottom element and the portion 12 to provide a fixed connection between the said various parts of the chimney structure.
Patent GB-1169926-A (GB)
Title: Improvements in or relating to Emitter Follower Transistor Circuit arrangements
IPC: H03F3/50
Filed: 1966-11-22
Abstract: 1,169,926. Transistor amplifiers. TELEFUNKEN PATENTVERWERTUNGSG.m.b.H. 22 Nov., 1966 [28 Dec., 1965], No. 52306/66. Heading H3T. In an emitter follower amplifier a tap on the base voltage divider 2, 3, 7 is connected to the base of the transistor 1 via a resistance 5 and via a diode or diodes 7, which in operation is forward biased, to the emitter of the transistor, the diode or diodes 7 in series with the emitter resistor 2 constituting part of the base voltage divider. The connection of the diode or diodes in the biasing arrangement ensures that the input impedance of the emitter follower transistor, which could be undesirably decreased by the effect of a base voltage divider, remains high. The diode or diodes and transistor 1 can be formed as an integrated circuit.
Patent GB-1182650-A (GB)
Title: Dual Detent Mechanism for a Portable Recorder-Reproducer
IPC: G11B3/04
Filed: 1967-11-17
Abstract: 1,182,650. Portable disc recording-reproducing devices. GENERAL ELECTRIC CO. 17 Nov., 1967 [25 Jan., 1967], No. 52350/67. Heading G5R. The device comprises a support, a turntable arranged on it for carrying a record member, driving means for rotating the turntable and thereby the record member, a stylus-carrying recording arm for forming a sound-responsive impression in the record member, this arm being movable from its operative position to a rest position above and adjacent the centre of the turntable, a stylus-carrying playback arm for reproducing sound from record grooves, and a unitary detent element secured to the support and co-operating with the arms either singly or together for positively biasing them into their rest position. The two arms are thereby maintained in their rest position while the apparatus is being transported. As shown in Fig. 1, the recording arm 19 and the playback arm 21 are both in their rest position, where they are urged by the detent element (to be described) against the underside 75 of part of the supporting housing 13. As shown in Fig. 3, each arm is of one-piece moulded plastics construction and is hollow underneath. In the rest position of arm 19, the lower surface of the inner wall of its enlarged (head-accommodating) portion 35 rests on the horizontal surface 65 of a tongue 53 extending outwards from and integral with the front wall 47 of a detent element 33, also of one-piece moulded plastics construction, e.g. nylon. To bring arm 19 to the (operative) position shown in Fig. 3, it is moved radially outwards, thereby depressing slightly the tongue 53 (which is resilient), by engagement of the arm with the cam surface shown to the right of cam surface 61. As the arm is moved further outwards, and along cam surface 61, the tongue 53 rises again to its normal position. During this movement the arm is prevented from rising by its continued contact with the underside 75, Fig. 1, and it is for this reason that the tongue 53 is constrained to yield downwards. A complementary tongue 55, with cam surfaces, extends from the front wall 47 of detent element 33 to support the playback arm 21. Detent element 33 is secured to the underside of the top of part 82 of the housing 13. Element 33 may be of nylon.
Patent GB-1020380-A (GB)
Title: Circular particle accelerators
IPC: H05H7/10
Filed: 1964-12-31
Abstract: 1,020,380. Particle accelerators. C.S.F.-COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Dec. 31, 1964 [Jan. 9, 1964], No. 52967/64. Heading H1D. An arrangement for extracting particles from a circular particle accelerator, e.g. cyclotron, comprises a magnetic channel arranged along a part of the last orbit of the accelerated particles, the channel, at least over a part of its length, being open in the direction toward the interior of the circular accelerator. The channel is in the form of a trench over a part of its length, the open sides of the channel being bounded by bevelled edge portions. The parts of the channel not open towards the interior may be of the form of a hollow rectangular tube or open in the direction of the magnetic field, viz. perpendicular to the plane of the accelerator structure.
Patent GB-1246968-A (GB)
Title: Improvements in or relating to support means for optical projection systems
Inventor: SUTTON DENNIS ARTHUR
IPC: G03B27/62
Filed: 1967-11-24
Abstract: 1,246,968. Photographic apparatus. CAPS RESEARCH Ltd. Nov. 19, 1968 [Nov. 24, 1967], No.53544/67. Heading G2A. The original support of a photographic projection apparatus comprises a base 31 and a cover 33 sealed all round by a rubber gasket 51 between them; two parallel plates 21 spaced by spacers 55 extending along two opposed sides of the plates, the plates transmitting ultraviolet radiation and forming central windows in the base 31 and cover 33 to which they are sealed all round by seals 57. Liquid is provided between the plates and between the base and the cover on either side of the plates, a flow of liquid for cooling the plates being set up due to convection currents when the apparatus is in use. Cooling fins 29 are provided on the outer surfaces of the base 31 and fans (59) Fig. 1 (not shown) help cool the fins. In use, radiation from mercury vapour lamps (1) illuminate a book (5) on the support and an image thereof is reflected by a mirror (9) through a lens (11) on to photographic material (13).
Patent GB-1069590-A (GB)
Title: Power transmission
IPC: F16H39/02
Filed: 1965-12-21
Abstract: 1,069,590. Hydrostatic transmissions. BRAUNSCHWEIGISCHE MASCHINENBAUANSTALT. Dec. 21, 1965 [Dec. 22, 1964], No. 54132/65. Heading F2C. A drive arrangement for large rotary bodies, such as the inner cylinders of sugar diffusion towers, comprises a ring gear drive wheel 1 carried by a stationary plate 2 on which are mounted a circumferential series of hydraulic motors 3 supplied through lines 8, 9 by a common pump 5 driven by an electric motor 7, and each driving a pinion 4 meshing with the ring gear 1. The drive to each pinion may be direct as shown, or through a reduction gear.
Patent GB-1205019-A (GB)
Title: Improvements in or relating to oral dosage forms
Inventor: LEIGH STEVEN
IPC: A61J3/00
Filed: 1966-12-07
Abstract: 1,205,019. Oral dosage forms. STERWIN A.G. 7 Dec., 1967 [7 Dec., 1966], No. 54875/ 66. Heading A5B. A solid oral unit dosage form comprises a medicament, and 50-85% by weight of a pharmaceutically acceptable base material and 1-30% by wt of a plasticiser for said base material, the plasticiser and base material forming a mixture which is water-soluble, has a m.p. without charring or other decomposition between 35‹ and 90‹C and acts as a solvent for the medicament when in the molten state. The dosage forms may be prepared by dissolving the medicament in a melt of the base and plasticiser and allowing drops to fall through a cooling atmosphere on to a cool surface and allowing the mixture to solidify, usually yielding a form that is flat on one side and curved convexly on the other. Medicaments referred to are isoprenaline and its salts, alkaloids e.g. caffeine, glyceryl trinitrite, vitamins e.g. A, D or riboflavin, an aromatic mixture acting as a breath freshener and a sugar substitute e.g. saccharin. Suitable base materials include polyethylene glycols, and polyoxyethylene esters and ethers.
Patent GB-1378827-A (GB)
Title: Piston for rotary piston machines and a die-casting tool for its manufacture
IPC: F02B55/04
Filed: 1972-11-30
Abstract: 1378827 Casting moulds and cores AUDI NSU AUTO UNION AG and WANKEL GmbH 30 Nov 1972 [24 Dec 1971] 55395/72 Heading B3F [Also in Division F1] A die for casting a substantially triangular rotary piston has outer parts 14, 14a, 14b and cores 15, 16 located by bushes 23, 30. To form cooling passages in the regions of the piston's apices the cores include portions 17, 24 with tapered projections 18, 25, these portions cooperating with further portions 19, 26 to form annular grooves from which the passages extend. An extension 31 of a hub 29 of the core 16 forms a bearing opening and abuts a hub 22 of the core 15. When the casting has been made the cores are dismantled by removing first the hubs, then the portions 17, 24 as indicated by arrows a and finally the portions 19, 26 in accordance with arrows b. The core 15 may be dispensed with and the corresponding passages and annular groove formed by machining.