baber/WOPTO huggingface dataset:
Patent GB-882444-A (GB)
Title: Means of converting a mechanical force into an electrical current
Inventor: FIELDEN JOHN ERNEST
IPC: G01R17/08
Filed: 1958-11-18
Abstract: 882,444. Measuring electrically. FIELDEN ELECTRONICS Ltd. Nov. 9, 1959 [Nov. 18, 1958; July 27, 1959], Nos. 37025/58 and 25638/59. Class 40(1). A transducer means for converting a force into an output current comprises a balanceable member such as the beam 4 to which the force is applied, as at 14, a movable condenser element 6, integral with the beam 4 and a stationary condenser element, which together with circuit means 11 provide an output current which energizes electromagnetic means to apply to the beam a balancing force dependent on the output current to restore the beam to a predetermined balance condition. The electromagnetic means comprise a cylindrical permanent magnet 2 and an annular coil 1 energized by the current, the magnet 2 being integral with the beam 4 and movable along the axis 3 of the core, the condenser elements 6, 7 being discs positioned perpendicularly to that axis within a cup-shaped body 8, charged with electrically insulating liquid, whereby the movable element 6 and the cup 8 coact to damp oscillation of the beam 4. The magnet 2 may itself comprise the movable element 6 and co-operate with the cup 8 in a piston-dashpot manner. Embodiments are described wherein the force to be measured may be a high-pressure difference or a lowpressure difference. The balanceable member may be a vertical spring-loaded rod.
Patent GB-1012876-A (GB)
Title: Improvements in hermaphrodite electrical connectors
IPC: H01R13/28
Filed: 1964-09-10
Abstract: 1,012,876. Two-part couplings. AMP. Inc. Sept. 10, 1964 [Sept. 26, 1963], No. 37054/64. Heading H2E. A hermaphroditic electrical connector comprises a pair of substantially parallel contact arms 5 and 6 arranged in an opposed convex manner and of V-shaped cross section integrally joined along part of their length by a web portion 4 which, by bending, permits relative transverse movement of the arms. The free end of each arm is partly spherical. Before engagement, the arms of each contact are slightly convergent towards their free end. The contacts are assenbled in orthogonal relationship, and are moved towards each other until the forward sections of web portions 4 abut.
Patent GB-429088-A (GB)
Title: Improvements in and relating to granules of carbon black
IPC: C09C1/58
Filed: 1934-05-02
Abstract: In the formation of granules of carbon black, droplets of a suspension of carbon black in a liquid are introduced into an atmosphere which partially dries the droplets while suspended therein.  In operation, the carbon black is made into a suspension in water which may contain a protective agent or an agent serving to depress the surface tension, or both; e.g. 15 to 25 parts by weight of carbon black may be suspended by means of a colloid mill in 85 to 75 parts of water containing a little triethanolamine soap, &c.  A stream of the suspension is caused to impinge on the surface of a rapidly rotating, horizontal disc mounted near the top of a tall cylindrical drying chamber through which an upward current of air passes, air inlets being provided at about the middle of the wall and arranged tangentially.  The floor of the chamber may be heated, inclined and given a vibratory movement to cause the particles to accumulate round a delivery opening.  A conveyer may carry the granules through a further drying apparatus after which they may be screened.
Patent GB-762845-A (GB)
Title: Miticidal compositions and formulations
IPC: A01N41/04
Filed: 1954-12-23
Abstract: A miticidal composition comprises a mixture of p-chlorophenyl p-chlorobenzene sulphonate and p-chlorophenyl benzene sulphonate in the proportions of approximately 10 per cent to 60 per cent, preferably 40 to 50 per cent, by weight of the former substance and approximately 90 per cent to 40 per cent, preferably 60 to 50 per cent, by weight of the latter substance, the mixture having a melting point below about 50 DEG C. and a toluene solubility exceeding that of either pure substance.  The composition may be in an emulsifiable or emulsion or paste concentrate form by using suitable solvents and emulsifying agents.
Patent GB-1366588-A (GB)
Title: Apparatus for cultivating cells and microorganisms
IPC: C12M3/04
Filed: 1972-08-10
Abstract: 1366588 Mixing and agitating apparatus H MULLER 10 Aug 1972 [13 Aug 1971 6 April 1972 28 April 1972] 37422/72 Heading B1C [Also in Division C6]  Apparatus for cultivating tissue cells and micro organisms comprises a surface 1 wound as a spiral between end discs 7 and mounted in a rotatable horizontal shaft 4 in a cylindrical housing 9; on rotation nutrient solution and gas alternately enter the spiral through the end slot 2 and are discharged through orifices 3. The surface may be of a polycarbonate vitreous enamelled steel or other metal, or spirals of glass tube or rod fused together side by side. The housing 9 is preferably of glass. The shaft 4 has a cavity for heating or cooling fluid and may be withdrawn through a bearing 5 having a sterile seal. The cells grown on the surface may be detached and harvested by increasing the speed of rotation and/or introducing quartz sand or granular plastics material, which may also be used to clean the apparatus without dismantling.
Patent GB-1388001-A (GB)
Title: 2-pyridones and preparations comprising them
IPC: C07D213/69
Filed: 1972-08-11
Abstract: 1388001 Pyridones CHEM PHARMAZ FABRIK DR HERMANN THIEMANN GmbH 11 Aug 1972 [13 Aug 1971] 37650/72 Heading C2C Novel compounds (I) (including salts thereof) wherein R<SP>1</SP> denotes a C 1 -C 6 -alkyl, a cycloalkyl or an unsubstituted or substituted aryl radical, R<SP>2</SP> denotes a C 1 -C 6 -alkyl, aralkyl or acyl radical, R<SP>3</SP> denotes a hydrogen atom or a free or esterified carboxyl radical, and R<SP>4</SP> denotes an alkyl, substituted or unsubstituted 2-arylethenyl, substituted or unsubstituted 2-arylethyl, substituted or unsubstituted 4-arylbutadienyl, substituted or unsubstituted 4-arylbutyl, 2- (C 1 -C 4  alkyl)-ethenyl, 2-(C 1 -C 4 -alkyl)-ethyl, 2 - (aryl - alkyl) - ethenyl or 2 - (aryl - alkyl)- ethyl radical, are made by standard methods. Pharmaceutical preparations having analgesic, antiphlogistic and muscle relaxing effect contain (I) as active ingredient. Administration may be orally, rectally and parenterally.
Patent GB-791236-A (GB)
Title: Improvements relating to bridge circuits particularly for stabilising a.c. voltages
IPC: G05F1/32
Filed: 1954-12-30
Abstract: 791,236. Automatic voltage control systems. GENERAL ELECTRIC CO. Dec. 30, 1954 [Dec. 30, 1953], No. 37680/54. Class 38 (4). [Also in Group XXXVI] In an automatic A.C. voltage control system of the kind in which a controlled self-saturating magnetic amplifier is connected in series between the input and output terminals, the output voltage error is detected by a demodulator bridge. In one embodiment, the bridge consists of tungsten filament lamps 11 in two arms, and, in the other arms, linear resistors 12 in series with transformer secondaries 14 which produce a circulating alternating current round the bridge proportional to the system output voltage (from terminal 5). A D.C. bias obtained by rectifying at 17 a portion of the output voltage tapped off the output transformer at 8 is applied to the bridge across diagonal 18. The circulating current due to transformers 14 does not produce any signal across diagonal 25 because of the symmetry of the circuit, but it does control the effective resistance of the lamps 11. The D.C. bias at 18 is adjusted so that for a desired value of output voltage (and corresponding circulating current) the total current both A.C. and D.C. through the lamps 11 causes the bridge to balance. Then any change in output voltage changes the A.C. circulating current (changes in D.C. bias are neglected) thereby changing the effective resistance of the lamps so that the bridge is unbalanced and produces a D.C. output signal across diagonal 25. This voltage controls the main magnetic amplifier 44 which is in series between the input 1 and the output auto-transformer 6 via magnetic amplifiers 28, 29. In a modification, Fig. 2 (not shown), the A.C. control voltage is applied to all bridge elements in parallel via blocking condensers.
Patent GB-1318054-A (GB)
Title: Telephone set arrangements
IPC: H04M5/04
Filed: 1970-08-04
Abstract: 1318054 Telephone set amplifiers; auto matic gain control; limiters; muting TELEFONAKTIEBOLAGET L M ERICSSON 4 Aug 1970 [5 Aug 1969] 37692/70 Headings H3T H4K and H4R Amplifying arrangement for a telephone set, particularly an operators set, includes a receiver amplifiers with agc to reduce level variations, followed by a peak limiter circuit to eliminate impulsive interference, and a microphone amplifier with a muting circuit to prevent low level background noise being transmitted. The gain controlled receive amplifier, 1, Fig. 1, comprises a two stage transistor amplifier T1, T2, connected to the line at terminals CD and having a gain controlling circuit including transistors T3 and T4, the impedance of T4 being varied with signal level to vary the base bias on T1 and hence the gain of the amplifier to tend to keep the output constant. The amplifier output feeds a limiter stage, 2, comprising diodes D1, D2, biased into their conductive condition by current through the resistors R5, R6, and R15, and driven to cutoff by signal peaks exceeding predetermined levels to provide limiting of those peaks. The microphone amplifier 5, Fig. 2, comprises a single transistor T7 whose base bias is controlled by the rectified input signal via transistors T51, T6 and diode D7 so that T7 is cut off for low level signals, such as from background noise, and conducts only for normal speech signals. Two arrangements for connection of the amplifiers to the line via hybrid transformers are described with respect to Figs. 4 and 6 for either local or central battery operation, with a local supply circuit supplying regulated power to the amplifiers.
Patent GB-1188340-A (GB)
Title: Magnetic-Coil Windings Employing Strip-Form Current Conductors
IPC: H01F6/06
Filed: 1967-08-17
Abstract: 1,188,340. Superconductors; magnetic coil windings. SIEMENS A.G. 17 Aug., 1967 [18 Aug., 1966], No. 37882/67. Headings H1K and H1P. In a magnetic-coil winding having a strip conductor, there is arranged a strip of hightensile strength adjacent the conductor with its longitudinal axis extending at a uniform distance from that of the conductor, the hightensile-strength strip being adapted to limit the magnitude of tensile forces in the conductor in use. Cryoconductors 3 of Al or Cu, are wound in face-to-face contact with a strip 4 of glass-fibre, the conductors 3 and strips 4 being mounted within a heat insulating housing 1. The conductor 3 has transverse grooves 5 therein to allow passage of a cooling liquid at 20K. Cooling of the windings is also assisted by the capillary action of the fibres. In an embodiment (Fig. 2, not shown) using superconductors of the kind having superconductor wires (7) coated with In, Ag, Sn or Cu and covered by a strip of Al or Cu (8), a glass-fibre strip (9) is impregnated with semiconductor material at selected positions (10) thereby shunting the windings in the event of a transition. In another superconductor embodiment (Figs. 3 to 6, not shown) either the strip conductor (8) or a resin-impregnated glassfibre strip (9) has a glass-fibre strip (11) wound helically about it which provides coolant passages (12). The glass-fibre strip (9) may be replaced by stainless steel, Be, Cu, Ti or carbon-fibre. 1,188,369. Magnetic compositions. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 18 Aug., 1967 [23 Aug., 1966], No. 38109/67. Heading H1H. A sintered ferrite has the composition in mole per cent Fe 2 O 3  48-50 NiO 22-A9 ZnO 0-27 CoO 0À7-1À5 V 2 O 5  0À1-0À5 The NiO/ZnO ratio may be 0À9-12. The ferrite is prepared by sintering at 1000-1400C. a mixture of the oxides or oxide-yielding compounds or reaction products of 2 or more of the oxides. V may be added as NH 4 VO 3  or V 2 O 5 , either to the initial mixture or to the ground presintered product. Values are given for various ferrite of the initial permeability Á 1 , the loss factor quotient tan#/Á 1 , and the temperature factor #Á 1 /Á 1 <SP>2</SP>(t 2 _t 1 ), and the insensitivity of tan#/Á 1  to a strong constant magnetic field is illustrated.
Patent GB-979758-A (GB)
Title: Improvements in expansion joints for cast iron soil stacks
IPC: E03C1/122
Filed: 1962-10-08
Abstract: 979,758. Expansion joints for pipes. BROADS MANUFACTURING CO. Ltd., and G. V. CARPENTER. Oct. 8, 1963 [Oct. 8, 1962], No. 38023/62. Heading F2G. An expansion joint for interposition between two adjacent lengths A and B of soil pipe in a stack comprises a tube 1 of non-corrodible material having a smooth outer surface and caulted at one end 3 to one of the soil pipes and a second tube 2 caulked at one end 4 to the other soil pipe, the other ends of tubes 1 and 2 fitting into each other with a ring 5 compressed between them so that it is in sliding engagement against the smooth outer surface of the tube 1 to form a gas seal. 0-rings 9 are provided in the caulked joints 3 and 4. The tube 1 is of brass and the tube 2 of cast-iron. A nut 6 compresses the ring 5, which is of graphite, by way of a steel ring 7 to degree which still allows the tube 1 to move axially due to changes in temperature. A groove 8 is provided to indicate the position of the tube 1 at normal temperature.
Patent GB-1502977-A (GB)
Title: Multilayer printed circuit boards
IPC: H05K1/00
Filed: 1975-09-19
Abstract: 1502977 Printed circuits INTERNATIONAL COMPUTERS Ltd 26 July 1976 [19 Sept 1975] 38462/75 Heading H1R A printed circuit board (Fig. 1) comprises an insulant substrate of, e.g. phenolic or epoxy resin, ceramic or glass with an array of circuit conductors 4 on face 2 for formed or mounted components (not shown) and a ground or power supply screen 5 having retriculated apertures is mounted on opposed face 3. The screen (Fig. 2, not shown) may be formed as an openwork lattice with apertures and conductors proportional to provide a continuous conductive plane effective to match the natural characteristic impedence of conductors 4 (forming transmission lines) to the requirements of the circuit. Alternate apertures of the rows and columns of the lattice may be omitted (Fig. 3, not shown) and the apertures may be rectangular or diamond shaped (Fig. 4, not shown) to provide a trellis configuration. Circular apertures may also be used, and they are disposed in a regular pattern to provide even distribution of conductive material over the area of the screen providing the required impedance matching. The screen may be continuous over some areas of the board and omitted over others, e.g. those on which a discrete component is mounted. In a multilayer printed circuit board (Fig. 5) a central insulant substrate 13 carries orthogonal strip conductor patterns 14, 15 on either face with interconnection over through holes (not shown). Insulant layers 16, 18 over conductors 14, 15 carry lattice screens 17, 18 acting as power and ground planes with connections to the circuitry of conductors 14, 15 over through holes (not shown) and covered by external protective layers. Alternatively (Fig. 6) the screens may be positioned interiorly of a multilayer board; screens 20, 21 with circular apertures 23 acting as power and supply planes on each face of a central insulant substrate 22; the circuit conductors 24, 26 being carried by insulant layers 25, 27 over screens 20, 21 with interconnections through plated through holes (not shown) traversing clearance apertures of the insulant layers and of the screens. External protective layers may be provided. Different aperture patterns may be employed for different screens, and selected screens may be imperforate, to provide required impedence matching. The spacings between conductor layers and screens may be varied in different areas.
Patent GB-887898-A (GB)
Title: Apparatus for periodically determining the carbon dioxide content of a carbon dioxide containing liquid flowing through a conduit
Inventor: DIJKEMA LEENDERT FREDERIK WILL
IPC: G01N7/14
Filed: 1959-11-16
Abstract: <PICT:0887898/III/1> An apparatus for periodically determining carbon dioxide in a flowing stream of liquid comprises a chamber (1) connected into a bypass line (3a, 3b) in the conduit (5) carrying said liquid, said p  bypass line having a pump (4) at its inlet end and having stop valves in the supply and discharge branches; further valved inlet and outlet lines (6a, 6b) for gas in the upper part of said chamber, the inlet line being connected to a source of carbon dioxide (conduit 9); and a pressure responsive device (8) (which if desired may be linked to a recorder, or a controller for the carbon dioxide content of the liquid stream) said device being connected to said container by means of a line also having a stop valve.  As illustrated in the drawing (to which the above numerals relate) the stop valves are combined in a single plug valve 10, which may be rotated by a motor 13, and the passages in the valve are so arranged that in each revolution of the plug, (1) the container is completely filled through line 3a with the liquid to be tested (line 3b also being open), (2) the upper part of the container is filled with carbon dioxide from conduit 9 through line 6a while liquid in the upper part of the container is expelled through line 6b, (3) the gas space is placed in communication with the atmosphere through line 6a and branch line 7 and (4) the gas space is placed in communication with the pressure gauge 8 through line 6a and the lower-most branch line. The lines or branch lines referred to are closed after each operation and between operations (3) and (4), a vibrator 14 is set into motion to assist in establishing equilibrium between the gas and the liquid.  A thermometer 15, also linked to recording device 16, is provided, whereby said device may read the carbon dioxide content (which is a function only of temperature and equilibrium pressure) directly.  If the apparatus is placed in a thermostat, no thermometer recording is necessary.  If so desired, the plug valve may be operated manually to obtain non-repetitive results.
Patent GB-362703-A (GB)
Title: Improvements relating to safety razors
IPC: B26B21/18
Filed: 1930-12-24
Abstract: 362,703. Safety razors. PAGE, W. L., Forward Works, Golden Hillock Road, Sparkbrook, Birmingham. Dec. 24, 1930, No. 38810. [Class 30.] A safety razor comprises in combination a toothed guard-plate a carried by a tubular handle a<1>, a clamping plate b having a stem b<1> slidable within the handle and permanently or separably connected thereto, a blade d having a slot d<2> extending from one edge to receive the stem bl so that it can be slidden into position without separating the clamping plates, and fastening means on the stem operating within a slot a2 in the handle to maintain the parts in the open or closed positions. In the form shown in Fig. 2, the stem b<1> carries in a tapped aperture at its lower end a screw c slidable in the handle slot a<2> and having a reduced end engageable with either of two blind apertures in the handle, corresponding to a clamped or extended position of the clamping plate. In modifications, also shown, the screw is replaced by a spring plunger with or without an enlarged end, a helical spring being housed either in a recess in the inner side of the stem b<1> or in a casing attached to its outer side and sliding in the slot a<2>. Alternatively a bayonet or L-slot catch may be used. The blade, which may be clamped transversely curved or flat, has a manipulating tab d<3> and is located by a rib a<4> on the gaard or clamping plate.
Patent GB-1406748-A (GB)
Title: Method for preparing cigarette filter of cellulose acetate  fibres
IPC: D06M101/00
Filed: 1973-08-17
Abstract: 1406748 Plasticised filters DAICEL LTD 17 Aug 1973 [17 Aug 1972] 38981/73 Heading A2C [Also in Division D1] Cigarette filters are prepared from a tow of continuous cellulose acetate filaments plasticised with 1 to 20% by wt. of the fibres of a plasticiser comprising the diacetate dipropionate and/or dibutyrate ester of 1-3 butylene glycol. Exemplified plasticisers are 1, 3 butylene glycol diacetate alone or mixed with equal amounts of triacetin or triethylene glycol diacetate and (for comparison) triethylene glycol dipropionate and tetraethylene glycol dipropionate. The plasticiser is mixed or sprayed uniformly onto an opened tow of 5000 to 100000 continuous filaments of 1-16 denier and 10-30 crimps/inch. The hardness and air permeation resistance of the plugs are specified.
Patent GB-1317485-A (GB)
Title: Foamed fertilizers
IPC: C05C9/00
Filed: 1970-08-14
Abstract: 1317485 Pesticide/foamed fertilizer compositions O M SCOTT & SONS CO 14 Aug 1970 [15 Aug 1969] 39215/70 Heading A5E [Also in Divisions C1 and C3] Pesticidal compositions comprise a foamed urea-formaldehyde fertilizer. In examples the pesticides used are 2, 4-D; dicamba; diphenamid; neburon; carbaryl; phenylmercuriacetate; thiram and ethion.
Patent GB-1331985-A (GB)
Title: Process for removing cyclopentadiene from c5 fractions
IPC: C07C7/10
Filed: 1970-08-14
Abstract: 1331985 Removing cyclopentadiene from C 5  fractions ERDOLCHEMIE GmbH 14 Aug 1970 [16 Aug 1969] 39238/70 Heading C5E A C 5  fraction containing paraffinic, olefinic and diolefinic hydrocarbons and cyclopentadiene is worked up by: (i) heating to dimerize the cyclopentadiene; (ii) extracting with a selective solvent for diolefines, leaving dicyclopentadiene in the paraffin-olefine phase; (iii) separating the dicyclopentadiene from solvent and from paraffins and olefines by distillation. The starting material may be a fraction of a cracked gasoline, the solvent may be N-methyl-pyrrolidone, 1-phosphacyclopentene or its 1-oxo-1- methyl derivative, N-methyl-oxazolidone, acetonitrile, dimethyl sulphoxide, furfurol, dimethylacetamide, dimethylformamide or sulpholane, and may contain water. The raffinate from the solvent-extraction step may be washed with water, before distillation, the washings added to the extract and distilled to separate solvent from hydrocarbons and excess water.
Patent GB-1325239-A (GB)
Title: Magnetic head and method of manufacture thereof
IPC: G11B5/255
Filed: 1971-08-23
Abstract: 1325239 Magnetic heads AMPEX CORP 23 Aug 1971 [28 Aug 1970] 39357/71 Heading G5R Magnetic heads 10 having a non-magnetic gap 11 in a magnetic core 13, 14 are formed with glass islands or pockets 15, 16 at each end of the gap 11 to reduce edge erosion 18, 19. A plurality of such heads 10 are manufactured from two blocks 26, 27 of magnetic material, e.g. ferrite, by (a) forming a plurality of spaced notches 29 in an edge 28 of the block 26, to define lands 39; (b) forming an elongate groove 40 in a plane surface 41 of the block 27; (c) holding the blocks 26, 27 together, Fig. 4 (not shown) with the groove 40 overlying part of the notches 29 and with a non-magnetic spacer (53) interposed between lands 39 and confronting strip 51 of the block 27; (d) bonding the blocks 28, 27 together by placing one or more rods (56), Fig. 4 (not shown) or (72), Fig. 9 (not shown) of glass material in the groove 40, and heating to a temperature at which the glass melts and flows by capillary action into the notches 29, and out of the groove 40 so that a winding window 21 is formed in the head 10; (e) slicing the blocks 26, 27 along planes (64), Fig. 7 (not shown) parallel to and bisecting the notches 29. Glass also flows into the gap formed below spacer (53) between lands 39 and the strip 51, and a top portion (61), Fig. 6 (not shown) of both blocks 26, 27 is lapped off, thereby removing spacer (53) and leaving a glass-filled gap 11. Spacer (53) may be formed by a particle deposition process. Alternatively, Fig. 9 (not shown), the spacer may be a shim (71) of a glass of higher melting point, which is not caused to melt.