baber/WOPTO huggingface dataset:
Patent GB-1499687-A (GB)
Title: Apparatus for dry forming a layer of fibre
IPC: D01G25/00
Filed: 1976-10-20
Abstract: 1499687 Fibre layer former KARL KROYER ST ANNE'S Ltd 20 Oct 1976 [24 Oct 1975] 43945/75 Heading DIN Apparatus for dry forming a fibre layer comprises a distributor box with a perforate bottom wall 12 and an inlet 11 for airborne fibres which form a fibre bed which is agitated and whose height is adjustable by varying the distance between the bottom wall 12 and an excess fibre outlet 16, there being a foraminous forming surface 20 below the box under which suction is applied. The height of outlets 16 is adjusted by raising/lowering a sleeve 40 which acts as a weir to the fibre bed. Alternatively a top section of the box containing the outlets may be telescopically engaged with the lower part and adjustable in its height position. Also an adjustable obturator can be positioned at the outlet. The fibre bed is agitated by rotors 13 and the airflow induced between the box and the forming surface may be modified by adjustable flaps 35. Specification 1497808 is referred to.
Patent GB-1366568-A (GB)
Title: Driving arrangement for tape shaped record carriers
IPC: G11B15/43
Filed: 1972-09-22
Abstract: 1366568 Control of D.C. motors PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 22 Sept 1972 [25 Sept 1971] 43953/72 Heading H2J Two D.C. motors driving the reels of a recording tape transport arrangement have one end of their windings M1, M2 connected via a common impedance to one supply terminal UB and the other end of their windings connected to the other supply terminal, one motor winding directly and the other motor winding through a voltage dependent element Z, e.g. a Zener diode, whose impedance above a given voltage decreases with increasing voltage. The action of this circuit during fast winding is to keep the sum of the back e.m.f.s. E1 and E2 constant at the Zener voltage and thus the winding speed is kept constant. A changeover switch S is used to reverse the connections and thus the winding direction. The single Zener diode can be replaced by a pair of oppositely poled series connected Zener diodes permanently connected between the windings and the changeover switch simplified. In the full control circuit shown in Fig. 4, the direction of winding is ordered by energization of a respective one of terminals 2 or 3. Energization of terminal 2 or 3 above also causes a fast winding condition and the motor windings are supplied through normally conductive transistor T4 and Zener diodes Z1, Z2 to provide speed stabilization. Energization of terminal 4 causes transistor T5 to conduct and short circuit the windings through their respective Zener diodes thus stoppping the tape. For playing or recording (i.e. running at a lower speed) transistor T3 is made conductive to switch off transistor T4 so that the windings are supplied either from a lower voltage source through R3, D2 or from the single high voltage source through R2, R9. Under the stop condition tension is maintained by supplying the motor windings through R7 and R8. During fast winding an additional torque is required when the reel is nearly full to maintain the winding speed and this is obtained by the eventual conduction of diode D2.
Patent GB-1178447-A (GB)
Title: Gasketed Closures for Containers.
IPC: B65D41/04
Filed: 1967-09-29
Abstract: 1,178,447. Caps for bottles &c. W. R. GRACE & CO. 29 Sept., 1967 [29 Sept., 1966], No. 44488/67. Heading B8T. [Also in Division C3] A thermoplastic bottle closure contains a gasket formed from resin composition comprising (a) 50-100% of a dispersion grade vinyl chloride copolymer containing at least 5% of an ethylenically unsaturated comonomer and (b) 0-50% of a suspension grade vinyl chloride polymer and/or copolymer, the latter containing not more than 15% of an ethylenically unsaturated comonomer, together with a liquid non-volatile plasticizer having a #CED (cohesive energy density) of at least 8À6. Exemplified comonomers are for (a) vinyl acetate and maleic anhydride and for (b) vinyl acetate and vinylidene chloride. The plasticizer may be di-n-butyl adipate, di-2-ethylhexyl phthalate, di-isodecyl phthalate, di-n-butyl phthalate, butyl benzyl phthalate, tricresyl phosphate, octyl diphenyl phosphate, di-nhexyl adipate or acetyl tributyl citrate. Also added in the examples are titanium dioxide, paraffin wax and calcium/zinc stearates. The gaskets formed from these compositions are used in screw cap bottle closures made from polystyrene, polypropylene or other thermoplastic material. They are formed in situ, preferably being shaped by spinning to distribute the composition, then fluxed by heating to 79-82‹ C.
Patent GB-957788-A (GB)
Title: Polymerization process
IPC: C08F4/30
Filed: 1960-12-29
Abstract: Vinylidene monomers and monomers containing more than one ethylenic double bond are polymerized at at least 100 DEG C. using aqueous hydrogen peroxide as catalyst in the presence of at least sufficient solvent to maintain a homogeneous liquid phase between the monomer and the aqueous hydrogen peroxide. Specified vinylidene monomers are styrene, alpha-methyl styrene, divinyl benzene, vinyl chloride, vinyl acetate methyl methacrylate, ethyl acrylate, methyl acrylate, trialkyl cyanate, phenyl maleic acid and acrylonitrile while butadiene, isoprene, piperylene, hexadiene and 2-chlorobutadiene are specified dienes. Specified solvents are acetone, methyl ethyl ketone, methanol, ethanol, or propanol, isopropanol, dimethoxy ethane, methyl cellosolve dioxide or an azeotropic boiling mixture of a hydrocarbon liquid e.g. toluene and a C1- 4 alcohol or of an alcohol e.g. methanol and a ketone e.g. acetone.  A hydrogen peroxide stabiliser e.g. boric acid, a chain transfer agent, a modifier and an antioxidant may also be present. Part of the aq. hydrogen peroxide may be added initially and part later e.g. intermittently.
Patent GB-1398542-A (GB)
Title: Web holding apparatus
IPC: G11B23/02
Filed: 1972-09-27
Abstract: 1398542 Web storage device LANIER ELECTRONIC LABORATORY Inc 27 Sept 1972 [29 Oct 1971] 44618/72 Heading B8M A web holder 45 for storing a length of flexible web comprises first and second side members 47, 48 in substantially co-planar relationship, both said members being formed of resiliently flexible sheet material, e.g. plastics sheet, and being substantially rectangular, the members 47, 48 being joined together at their shorter sides 49, 50 by flexible interconnection means 51, 52 the resilience of the interconnected side members causing or allowing the web holder to assume a normal configuration in which the members are substantially co-planar and flat and are deformable to a configuration in which the holder 45 is substantially cylindrical. The side members are joined by flexible strips strips 51, 52 at their ends 49, 50. In a preferred embodiment the holder comprises web retaining means in the form of projections 53 at the ends of the members. When the holder assumes the cylindrical configuration the projections 53 are received in complementary recesses 54 in the opposite side member. In operation, the holder is deformed to cylindrical configuration and placed on a hub to receive the web; at the end of winding, the holder is removed and stored flat.
Patent GB-1021174-A (GB)
Title: Improved machine for manufacturing coin wrappers
IPC: B31B17/00
Filed: 1963-11-12
Abstract: 1,021,174. Coin wrappers. G. J. O. WELIN-BERGER. Nov. 12, 1963 [Nov. 22, 1962], No. 44672/63. Heading B8K. [Also in Division B5] A coin wrapper, Fig. 9, comprises a seamed tube with a bottom heat sealed to it. The wrappers may be slightly conical so that they will nest as shown.
Patent GB-1073740-A (GB)
Title: Improvements in or relating to systems for radio transmission between a plurality of stations
IPC: H04W99/00
Filed: 1964-11-03
Abstract: 1,073,740. Pulse modulation systems. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Nov. 3, 1964 [Nov. 6, 1963], No. 44746/64. Heading H4L. In a random access discrete address system of the type in which communication is effected by modulated pulses consisting of combinations of pulses of radio-frequency oscillations in the same wideband channel, means being provided for establishing and locking a connection between any two stations of a plurality of stations, such as that described in Specification 1,068,861, each transmitter includes means for monitoring the presence or absence of a modulating signal and for reducing the repetition frequency of the pulses to a sub-harmonic frequency in the absence of modulation. Each receiver includes a gate which is operated in synchronism with the transmitted pulses and may include similar monitoring means which in the absence of modulation reduces the frequency of operation of the gate to a sub-harmonic of its normal operating frequency. This reduces the possibility of interference between stations. In a transmitting station a generator G provides pulses with a repetition frequency of 9 kc/s. which are supplied via a gate P to a transmitter S. The pulses from generator A are reduced to a repetition frequency of 4À5 kc/s. by a multivibrator M whose output is supplied via an amplifier A1 to the gate P as blocking pulses which in the absence of speech signals from microphone C suppress alternate pulses through the gate from the generator G. When a speech signal is present a rectifier D provides a control signal which is supplied via amplifier A2 and cancels the effect of the blocking pulses so that all the pulses from generator D are passed by the gate P.
Patent GB-1528206-A (GB)
Title: Electric cigar lighter
IPC: B60N3/14
Filed: 1975-10-30
Abstract: 1528206 Electric cigar lighter SCHOELLER & CO ELEKTROTECHNISCHE FABRIK GmbH & CO 30 Oct 1975 [6 Aug 1975] 44868/75 Heading F4F An electric cigar lighter comprises a sleeve 2 insertable in a socket sleeve 1 locatable in a vehicle, a glow coil 3 being connected to a knob 4 by a shaft 15 which is displaceable axially in a disc 14 which is in turn displaceable axially in the sleeve 2, the coil when displaced into an operative position B (in which it is electrically heated) being held, against the force of a coil spring 17, by bimetallic springs 5 which when heated release the coil 3 so that it is urged by the spring 17 into a removal position A, in which the knob 4 projects from the sleeve 2, and is retained in this position by springs (43), Figs. 4, 5 (not shown). These springs prevent the coil from accidentally protruding from the sleeve 2 when this has been withdrawn from the socket sleeve 1 for use of the lighter. The springs (43) are formed as part of the sleeve 2 and engage in recesses (44), Figs. 2-4 (not shown) of the disc 14. After use the knob 4 may be depressed so that the lighter is in an intermediate inoperative position in which the coil 3 is level with the end of the sleeve 2.
Patent GB-1209712-A (GB)
Title: Pipe for heating installations and water supply systems, particularly hot water systems
IPC: F16L9/21
Filed: 1968-09-24
Abstract: 1,209,712. Corrosion resistant steel pipes. BENTELER-WERKE A.G. 24 Sept., 1968 [29 Sept., 1967], No. 45372/68. Heading F2P. A pipe, e.g. for heating installations, comprises a flexible steel pipe 2 having an internal layer of corrosion resistant material 1, preferably a homogeneous plastics material such as polyolefine, and an external sheath 3 of expanded plastics material having a volumetric weight of less than 0À7 pond/cub. cm. The layer 2 may comprise an acid and alkaliresistant chrome-nickel steel, or copper, the sheath 3 preferably consisting of a polyolefine expanded by azodicarbonamide as the propellant. Before being shaped into a tube and longitudinally welded a sheet of steel can be roll plated on one side with a thin chrome-nickel steel sheet. A tube of copper may be telescoped into the steel tubing both tubes being drawn down to a reduced cross-section and bonded together by pressure diffusion on a mandrel and finally heated to a temperature of about 930‹ C. It is preferable to expand the plastics external sheath by means of a propellant to a volumetric weight below 0À5 pond/cub. cm., and to add to the sheath about 6-15 parts by weight of light weight heat insulating material, e.g. asbestos or powdered diatomite.
Patent GB-1284938-A (GB)
Title: Linear hydraulic motor
IPC: F15B15/14
Filed: 1969-09-15
Abstract: 1284938 Pistons PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 15 Sept 1969 [18 Sept 1968] 45397/69 Heading F2T A liquid actuated piston 8 having a pistonrod 9, has a liquid seal provided between a cylinder 1 and itself by two grooves 11, 13, communicating by passages 35, 36 with the chambers 22, 23 formed between discs 18, 19, 20 of a spool valve, the end face of the disc 18 being acted upon by the same pressure as that acting on the face 10 of the piston 8 and slots 31 being provided in the disc 19 communicating the chamber 23 with an annular chamber 28 having a liquid outlet passage. A chamber 24 is provided adjacent the end face of the disc 20 so that when the spool valve is in equilibrium the pressure in the chamber 24 is equal to that in a chamber A acting on the face 10 of the piston, and the end face of the disc 18. However, the chamber 24 communicates with the annular groove 11 through a passage 27, an aperture 26, the chamber 22 and the passage 35, so that pressure in the groove 11 is maintained at the same pressure as that in the chamber A. Shallow chambers 32 are provided around the piston 8 and each of these communicates with a chamber B via a passage 33 having a throttle 34. The chambers A, B are supplied with liquid, e.g. oil, from ports 4, 5. If the pressure in the chamber A is increased the spool valve moves to the right until the pressure in the groove 11 is equal to that in the chamber A, and this movement reduces the openings between the slots 31 and the chamber 28, consequently throttling the liquid flowing through the passage 36, increasing the pressure in the groove 13 and hence in the chambers 32 due to leakage. Consequently, the overall leakage along the piston 8 is reduced which allows the piston to maintain a constant speed hence it is used in lathes, milling machines, grinding benches &c.
Patent GB-1528784-A (GB)
Title: Method for developing silver halogenide light-sensitive materials
IPC: G03C5/31
Filed: 1975-10-31
Abstract: 1528784 Development process; holograms CENTRALNA LABORATORIA PO OPTICHESKI ZAPIS I OBRABOTKA NA INFORMATZIA PRI BAN 31 Oct 1975 45474/75 Headings G2C and G2X A method of exposing and developing a silver halide light-sensitive material, comprises: (a) exposing samples of the light-sensitive material for different exposure times in the range of light sensitivity of the material; (b) developing the exposed samples with developers each comprising at least three agents, one of  which agents is an agent for_reducing the silver halide to silver, another of which agents is an agent for dissolving unexposed silver halide and another of which agents is an agent for controlling the pH of the developer, the developers containing at least one of said three agents in varying concentrations: (c) determining the diffraction efficiency of each developed sample; (d) determining from these diffraction efficiencies the concentration of said at least one agent, and the exposure time, necessary to give a maximum diffraction efficiency; (e) exposing said silver halide light-sensitive material for the determined exposure time, and developing the exposed material using a developer comprising said at least three agents and containing said at least one agent in the determined concentration. Diffraction efficiency is defined as the ratio of the diffracted light to the light incident on the test plate. Conventional reducing agents, pH adjusters and silver halide solvents are specified. The method is used in the recording of holograms.
Patent GB-1403072-A (GB)
Title: Speech analysers and synthesisers
IPC: G10L25/00
Filed: 1972-10-03
Abstract: 1403072 Speech analysers PLESSEY CO Ltd 3 Oct 1972 45502/72 Heading H4R In a formant tracking system including two parallel paths each including an inverse filter and a formant tracker, the output of the formant tracker in each path being fed back to control the inverse filter in the other path, the absence of voiced speech is detected and used to set the formant trackers to specific rest conditions, as through they still has a speech input. As described the formant tracking system is of the type described in Specification 1,303,808 and the absence of voiced speech is detected in 2 by determining the level and frequency of the incoming speech signals and giving an output when the level is below a predetermined value and the frequency of the speech components above a predetermind frequency. The output of the voiced speech detector operated a switch 4 which disconnects the real speech signal input and replaces it with synthetic speech from synthesiser 6 having fixed formants F 1 , F 2  and F 3 . Alternatively the switch can connect voltage sources to the formant trackers to make them assume a particular output condition. If the trackers are of the ratio measuring type of Specification 1,337,254 a voltage source can be connected via respective resistors to the integrator amplifiers of the formant tracker.
Patent GB-1484684-A (GB)
Title: Turbofan engine incorporating a blade pitch sensor
IPC: B64C11/32
Filed: 1974-10-01
Abstract: 1484684 Axial-flow fans GENERAL ELECTRIC CO 1 Oct 1974 [1 Oct 1973] 45518/76 Divided out of 1484683 Heading F1C The subject-matter of this Specification is identical with part of that described in Parent Specification 1484683, but the claims are concerned with a turbofan engine comprising a variablepitch fan in which actuating means for varying the pitch include a first member, e.g. a cylinder, secured in a predetermined relationship with respect to the rotor disc of the fan, and a second member, e.g. a piston, movable relative to the first member, and a position sensor comprising a variable output signal means for producing a detectable signal as a function of the relative positions of the first and second members.
Patent GB-1059059-A (GB)
Title: Bonded abrasive grade checking apparatus
IPC: B24D18/00
Filed: 1965-10-28
Abstract: 1,059,059. Abrasive grading apparatus. MICROMATIC HOWE CORPORATION. Oct. 28, 1965 [Dec. 31, 1964], No.45705/65. Heading G1S. An abrasive grading apparatus comprises a support 13 having a carriage 33, Fig. 4 (not shown), disposed thereon, a fixture 61 carried by the carriage and adapted to receive an abrasive specimen 64, dressing tool means 99, Fig. 2 (not shown), adapted to dress an exposed surface of the specimen during movement of the carriage, grading means 101 including a grading tool 183 adapted to interferingly engage the dressed surface of the specimen to a predetermined depth during movement of the carriage and also including flexible means 181 supporting the grading tool, whereby the grading tool is deflected during engagement with the specimen to an extent reflective of the hardness of the specimen. In use the specimen 64 is mounted to a set position between jaws 63, 65 and the relative elevations of the dressing tool 109 and the grading wheel 183 are gauged and adjusted by operating a spindle 107 and screw 163 respectively. The grading wheel is then swung out of position and the specimen is slid along the carriage until positioned under the dressing tool 109. The carriage is then traversed along the base 13 by motor 17 thereby dressing the specimen. The carriage is returned to its initial position before the grading means is pivoted downwards and the carriage traversed again with the specimen engaging the grading wheel. The deflections of the wheel 183 and beam 181 are monitored to the gauge head 197 to indicate the specimen hardness.
Patent GB-1277805-A (GB)
Title: The supplying of water to an animal
Inventor: AKESSON AKE
IPC: A23K1/00
Filed: 1969-09-18
Abstract: 1277805 Animal feeds A AKESSON and A S DAHLGREN 18 Sept 1969 [25 April 1969] 46156/69 Heading A2B [Also in Division B8] Relatively dry animal feedstuffs, e.g. fodder tablets and cakes, have incorporated therein water in encapsulated form, the capsule walls being of a material which is destructible by the animal's digestive processes, e.g. gelatin, a hard fat or wax. The invention also comprises the method of supplying water to an animal by feeding the animal such feedstuffs.
Patent GB-1524259-A (GB)
Title: Turbines
IPC: F02C3/16
Filed: 1976-11-12
Abstract: 1524259 Gas turbine plant; combustion chambers V D Lewis 12 Nov 1976 [14 Nov 1975 22 Dec 1975] 46966/75 and 52298/75 Headings FIG and F1L [Also in Division F4] A turbine plant comprises an inward flow compressor 3d supplying air to a rotating combustion chamber 7 into a port-combustion region of which water is injected through ducts 23, the combustion gas/water mixture flowing outwardly to reaction jets so as to drive turbine 2d. As shown, the latter drives compressor 3d via chains and sprockets 75 77 etc., but in a modification Fig. 1, (not shown) the compressor and turbine are rigidly connected. In a further arrangement Fig. 4, (not shown) a separate power output turbine is provided. The turbine exhaust stream pre-heats the water in a direct contact heater (20), Fig. 3, (not shown).
Patent GB-1464166-A (GB)
Title: Continuously operable screw machine for treating plastic
IPC: B29C48/395
Filed: 1974-10-30
Abstract: 1464166 Feeding additives to screw extruders WERNER & PFLEIDERER 30 Oct 1974 [21 Nov 1973] 47001/74 Heading B5A [Also in Division B1] A screw extruder comprises a barrel opening from which material is delivered by the screw 3 in the direction 9, Fig. 4, to a further barrel opening 30 at which an additive is fed into the extruder, and upstream of which the extruder screw 3 is provided with a back pressure device causing the material to be by passed from the screw to a screw location downstream of the opening 30, via an extruder barrel channel or channels 31 which, at least at their ends, extend around more than half the periphery of the screw shaft. The apparatus enables the gravity feeding to the opening 30 of a particulate additive, or additives, from one or more belt weighing metering devices, Fig. 1 (not shown), with the feeding pressure being developed by a plurality of screw threads, e.g. 4, in the region 22 spanning the opening 30. The material comprises plastics or vulcanized or unvulcanized rubber, and the additive preferably comprises vulcanizing agent. The screw may have one or more threads 12, 13, and the back pressure device comprises either a cylindrical worm portion 23 provided with a peripheral sealing ring 24, and optionally upstream thereof threads of opposite hand to that of threads 12, 13, or comprises a plurality of opposite hand threads 25. Preferably a pair of the by pass channels 31 is provided, each extending around one exterior side of and between webs 26, 27, of a barrel member 21 which is secured between rings 29 and by a guide wedge 28. The upstream and downstream ends of the webs 26, 27, are tapered. The screw may be subjected to temperature control in the region of the opening 30, which may be provided with a dustproof cover. The extruder barrel is preferably of enlarged internal diameter in the region at which the material is fed to the screw, and downstream of the opening 30 the screw may be provided with webs extending traversely of the channels between the threads 12, 13, Fig. 1 (not shown).