baber/WOPTO huggingface dataset:
Patent GB-1482644-A (GB)
Title: Digital beam deflector
IPC: G02F1/31
Filed: 1974-10-24
Abstract: 1482644 Deflecting light PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 24 Oct 1974 [27 Oct 1973] 46013/74 Heading G2F In a digitial deflection system comprising a plurality of stages each of an electro-optic polarization switch and birefringent element, the final stage provides a deflection greater than that provided by all the preceding stages together and is followed by a lens, whereby the desired beam and most undesired light, if orthogonal polarization to the desired beam and produced for example by incorrect voltages at the polarization switches or faults in the arrangement of birefringent elements, are directed into opposite one of two distinct spatial regions according to polarization, and a subsequent device is controlled in cooperation with the polarization switches to allow only light in the region containing the desired beam to propagate in the intended direction of use. As described, this subsequent device comprises two similar elements, one in each region, which are naturally transparent to the light being used. Each element may be a CdS monocrystal with an electric heating element for shifting the absorption edge thereof, or a PLZT plate or liquid crystal cell for scattering light in response to an applied voltage, or an acoustic-optic deflection cell. The deflection angle may double from stage to stage.
Patent GB-1494017-A (GB)
Title: Dismutation of trichlorosilane
IPC: C01B33/04
Filed: 1975-11-06
Abstract: 1494017 Dichlorosilane RHONE-POULENC INDUSTRIES 6 Nov 1975 [7 Nov 1974] 46105/75 Heading C1A Dichlorosilane is made by the disproportionation of trichlorosilane in the presence, as catalyst, of an α-pyrrolidone which is N-substituted by a hydrocarbon radical. Preferably, N-methyl pyrrolidone or N-vinyl pyrrolidone is used in an amount of 3 to 20% by weight based on the weight of trichlorosilane, disproportionation being effected at from 30 to 120 C. at a pressure up to 3 bars absolute. The produce may be isolated from the reaction mixture by distillation at the rate at which it is formed.
Patent GB-1033328-A (GB)
Title: Pattern attachment for tufting machines
IPC: D05C15/32
Filed: 1964-11-17
Abstract: 1, 033, 328. Tufting machines. SINGER CO. Nov. 17, 1964 [Nov. 21, 1963], No. 46702/64. Heading D1G. A tufting machine is provided with yarn-feeding means comprising a pair of parallel shafts rotated in opposite directions at different speeds, a plurality of yarn-feeding elements mounted on each of said shafts and defining pairs of co-operating elements, one element of each pair being a driven element rigid with one shaft and the other element being an idler element journalled on the other shaft, the elements on each shaft being alternately driven and idler elements, and guide means for directing a yarn selectively between the elements of adjacent pairs for feeding the yarn at different rates. A shaft 25 driven via a chain 27 form the main shaft 6, drives a shaft 22 at the same speed via a chain 29, and drives a shaft 23 at a lower speed via reduction glaring 33, 34 and a chain 35. Driven gears 38, rigid with both shafts 22 and 23, mesh loosely with idler glass 39 journalled on shafts 22 and 23, each of the latter having a plurality of glass 38 and 39 arranged alternatively thereon. A yarn guide 17 is rigid with a pivoted rod 42 having an arm 44 connected to the armature of a solenoid 45. On energization of the latter, guide 17 shifts a yarn 16 between a pair of meshing gears 38, 39 for feeding at one speed, and, on deenergization of solenoid 45, yarn 17 is turned by spring means to shift the yarn between an adjacent pair of gears 38, 39 for feeding at a different speed. The number of guides 17 equals the number of tufting needles 12. Each solenoid 45 is connected by a wire 50 to a finger 49 engaging a pattern drum 47, the conducting surface of which is interrupted by insulating segments 48 for de-energizing the required solenoids 45.
Patent GB-921212-A (GB)
Title: Improvements in apparatus for cutting thin, limp foils or sheets
IPC: B65H35/04
Filed: 1961-12-29
Abstract: 921,212. Cutting-apparatus. W. R. GRACE & CO. Dec. 29, 1961 [Jan. 12, 1961], No. 46771/61. Class 31 (1). [Also in Group XVII] Thin limp webs are cut by a cutting wheel 10 which is freely mounted to rotate about the axis of an arm 9 and is arranged to run against a cutting bar 6 disposed in a base 5 when a carrier 8 holding the arm is moved along a guide red 7 supported above the base; the carrier can also be swung about the axis of the guide rod. The outer rim of the cutting wheel 10 is mounted on the arm 9 by means of ball bearings. The web, which is drawn from a roll 1 freely rotatable on a pair of rollers 3, 4, is drawn across the bar 6 of hard material such as glass and severed by the cutting wheel 10 as the latter is moved across the web by means of a handle 11.
Patent GB-1095960-A (GB)
Title: Sealing compositions
IPC: C08L61/10
Filed: 1966-10-20
Abstract: A sealing composition comprises a block copolymer of the formula A-B-A, where each A is a polymer block of a vinyl substituted aromatic hydrocarbon having an average molecular weight of 8,000 to 45,000 and B is a polymer block of a conjugated diene having an average molecular weight of 35,000 to 150,000, or a hydrogenated derivative thereof, together with, based on 100 parts by weight of said copolymer, (a) 75 to 200 parts by weight of a liquid hydrocarbon boiling between 100 DEG  and 175 DEG  C., (b) 50 to 175 parts by weight of a resin which is a hydrogenated rosin, terpene resin, polymerized rosin, pentaerythritol ester of rosin, polyalkene, or a mixture thereof, (c) 15 to 50 parts by weight of an alkylated dimethylol phenol-formaldehyde resin, (d) 150 to 400 parts by weight of a filler selected from alkaline earth metal carbonates, oxides and clays having average particle diameters between 5 and 75 microns, (e) 10 to 300 parts by weight of a filler selected from silicas, alkaline earth metal oxides and carbonates having average particle diameters between 0.005 and 1 micron, and (f) 0 to 50 parts by weight of a mineral oil. Optionally, the composition may contain antiozonants, antioxidants, colouring materials, and masking agents.  The compositions may be used for sealing the joints between concrete slabs of a curtain wall building.
Patent GB-1329667-A (GB)
Title: Two-terminal two-colour indicator lamp assembly
IPC: H01K1/62
Filed: 1971-10-08
Abstract: 1329667 Electric incandescent lamps WAGNER ELECTRIC CORP 8 Oct 1971 [12 Oct 1970] 46941/71 Heading H1F An indicator lamp has an envelope 12 with an uncoloured portion 14 and a coloured portion 16, and two filaments 18, 20 are supported within the envelope by members 22, 24, 26, 28 opposite respective envelope portions, and the support members extend through the envelope to be connected to first and second terminals 48, 50, which are mechanically connected to the lamp envelope, through a polarity-responsive circuit such that the direction of current flow determines which one filament is energized. This circuit comprises a pair of diodes 44, 46 connected between terminals 48, 50 and the leads 36, 38, 40, 42 extending through the envelope, in the manner shown in Fig. 2. The terminals 48, 50 wrap around the lamp envelope to engage it and an insulating cement (54), Fig. 4 (not shown), spaces the terminal portions 48d and 50d and supports the common diode/ filament junction.
Patent GB-1095113-A (GB)
Title: Improvements in or relating to pulse generators
Inventor: CLARKE STANLEY FREDERICK
IPC: H03K3/284
Filed: 1964-11-18
Abstract: 1,095,113. Pulse generators. MARCONI CO. Ltd. Sept. 30, 1965 [Nov. 18, 1964], No. 47039/64. Heading H3T. A pulse generator comprises two triggerable monostable circuits in cascade, arranged so that the rates of charge of the two timing capacitors can be varied while maintaining constant the sum of the reciprocals of the two charging currents. In Fig. 1 the two monostable circuits have capacitors C1, C2 charged via a potentiometer RV2 which has a differential effect on the respective charging currents. An input trigger pulse t 0  generates an output pulse as shown where the instant t 1  depends on the constants of the first monostable circuit and the instant t 2  depends on the second circuit. If C2 is twice the value of C1 it can be shown that alteration of RV2 will vary the width of the output pulse without affecting the timing of the centre point t m , while alteration of RV1 varies the timing without affecting the pulse width. If C1 and C2 are of equal values, RV2 and RV3 will control the timing of the leading and trailing edges respectively, each without affecting the other. For other relative values of C1 and C2 this independence of settings will not be obtained. The variable resistors may be at a remote point (Fig. 2, not shown) in which case the emitter-collector path of a transistor is included in each of the branches, between X and r1 and between Y and r2 respectively. The bases of the transistors are returned to +V, and an auxiliary battery is included between this point and the tap on RV2.
Patent GB-1425210-A (GB)
Title: Heat exchanger employing condensation
IPC: F28C1/00
Filed: 1973-10-09
Abstract: 1425210 Scrubbing gases L'INDUSTRIELLE DE CHAUFFAGE 9 Oct 1973 [19 Oct 1972] 47116/73 Heading B1R [Also in Division F4] In a tower 31 comprising one or more perforate baffles 36, 37 and an inclined non- perforate baffle 38, heat is recovered from upwardly flowing combustion gases entering the tower via an inlet 32 by direct contact with downwardly flowing liquid, e.g. water, sprayed horizontally into the upper part of the tower from spray means 34 and 35. Heated liquid together with entrained dust etc is collected at the bottom of the tower in a sedimentation vessel 41 which is provided with a baffle 42 to ensure an extended flow path for the liquid before it enters a second vessel 43 incorporating a filtering unit 44 for removing any remaining dust not separated from the liquid in the first vessel 41; the dust free heated liquid is taken from the tower 31 to a point of utilization e.g. a heat exchanger where heat is removed from the liquid, the cooled liquid thereafter being returned to the spray means 34, 35 in the tower for reuse. Partitions or weirs 39, 40 subdivide the upper surface of the inclined baffle 38 into a series of collection zones. The upper edge of the lowermost weir 40 is of serrated form to ensure an even flow of liquid therefrom into the vessel 41. The combustion gases may originate from a boiler external to the tower and/or from a gasfired combustion unit immersed in the liquid collected at the bottom of the tower.
Patent GB-1274207-A (GB)
Title: Improvements in and relating to synthetic filamentary materials
Inventor: HEWITT MAXWELL JAMES
IPC: D01F2/10
Filed: 1968-10-07
Abstract: 1,274,207. Coloured cellulose triacetate filaments. COURTAULDS Ltd. 6 Oct., 1969 [7 Oct., 1968], No. 47366/68. Heading C3F. Coloured filaments of cellulose triacetate are prepared by extruding a solution of cellulose triacetate containing a colouring medium (comprising a pigment which has been pre-dispersed in ethyl cellulose) through a jet into a coagulating medium. Preferably the colouring medium contains equal parts by weight of pigment and ethyl cellulose. The solvent used may comprise a mixture of methylene chloride and methanol or ethanol.
Patent GB-1166179-A (GB)
Title: System for Measuring Temperature
IPC: G01K11/26
Filed: 1967-10-20
Abstract: 1,166,179. Acoustic measurement of temperature. CORNING GLASS WORKS. 20 Oct., 1967 [25 Oct., 1966], No. 47762/67. Heading H4D. The temperature of a region is measured by passing gas from a constant pressure source through the region to actuate a sound generator and measuring the generated sound frequency. As shown, a sheath 10 closed by end 11 and by finned housing 20 is disposed in the region and contains a resonant cavity 14 with a tubular lip 16 over which the gas is blown to generate sound waves which are detected by dynamic microphone 37. The gas is supplied via flow regulator 28, pressure regulator 29, heat exchanger 31 and pressure reducing nozzle 32 to tube 18 in which its temperature reaches that of the region. An oven 30 is maintained at a temperature at least as high as the highest ambient temperature and prevents ambient temperature variations in the region of nozzle 32 from affecting the nozzle output pressure. Frequency counter 42 indicates the microphone output frequency or may be calibrated directly in temperature units. Examples of gases, dimensions and materials for constructing units 10, 13, 18 and 20 are given for use in measuring furnace temperatures up to 2000‹ C. In a modification the opening of the resonant cavity 14 is arranged to face the wall of sheath 10 instead of the end 11.
Patent GB-1093346-A (GB)
Title: Improvements in or relating to fluid valves
IPC: B60T1/08
Filed: 1965-11-11
Abstract: 1,093,346. Fluid-pressure brakes. H. TEVES, E. A. TEVES and M. TAUSEND, [trading as ALFRED TEVES MASCHINENUND ARMATURENFABRIK KOMM GES]. Nov. 11, 1965 [Feb. 20, 1965], No. 47906/65. Heading F2F.  A valve forming part of a vehicle hydraulic braking system which includes both friction brakes and a hydrodynamic retarder comprises a piston 14 acted on both by a spring 18 and by pressure at an inlet 15 from a master cylinder 4 (Fig. 1, not shown) to urge it against a stop member 30 which as a result props open a spring- loaded valve 26 in the piston allowing the fluid to flow via outlet 16 to brake cylinders associated with the rear axle 2 of the vehicle (the valve being marked 12 in Fig. 1, not shown), and further comprises a plunger 17 in contact with the piston and which is acted on by the torque reaction of the hydrodynamic retarder 7 (Fig. 1, not shown) via a lever 11 (Fig. 1), so that when the retarder reaction is high plunger 17 moves the piston 14 to the left in opposition to the inlet pressure and spring 18 to cause valve 26 to close and limit the pressure supplied to the rear brakes. The brakes of the vehicle front axle 1 (Fig. 1, not shown) are supplied direct from the master cylinder, the latter also being connected by a line 10 to the control chamber of a relay valve 10a which controls the flow of fluid from an accumulator 9 to the retarder 7. The valve 10a can also be manually operated to operate the retarder without the friction brakes being operated.
Patent GB-1413133-A (GB)
Title: Method and apparatus for electrochemical analysis of small samples of blood
IPC: G01N27/27
Filed: 1972-10-20
Abstract: 1413133 Electro-chemical analysis CORNING GLASS WORKS 20 Oct 1972 [21 Oct 1971] 48398/72 Heading G1N An electrode system of a pH flow through electrode, a pH reference electrode, a pCO 2  electrode and a PO 2  electrode enable pH, base  excess, HCO #3 , total CO 2 , PCO 2  and PO 2  of a sample of blood to be obtained. The electrodes are mounted in an overall measuring chamber in a stainless steel housing 32 the chamber being made up of parts 3-3a-3a'-3b. A blood sample is introduced into the port 1 either by a syringe or a capillary in which case the blood is drawn into the measuring chamber by means of a peristallic pump Fig. 1 (not shown) until it fills the whole chamber as viewed through viewer 47 positioned over the exit 10 of part 3b. After the measurements have been made the sample is withdrawn and the chamber flushed by fluid entering at 23. The chamber is maintained at a constant temperature by heating aluminium transfer blocks 31 by heating elements 33 the temperature being sensed by thermistor 49. In addition a further thermistor 49a measures the temperature of the sample and its output is used to control its temperature. pH measuring electrode assembly 4 is mounted in the housing 32 and is of the flow-through type of a vanadium clad pH sensor glass capillary tube 5 with a solid fused crystalline layer of silver halides through which is coiled a silver wire. The silver wire is connected with contact 27 to provide an output. pH reference electrode assembly 35 includes a semi-permeable membrane 37 in contact with the sample in capillary 3a and a sodium chloride electrolyte bridge, the area of the electrolyte in contact with the membrane being less than the area of the membrane in contact with the sample to form a wick.  PCO 2  electrode Capillary tube 3a' interconnects the tube 3a with a cylindrical chamber 3b coated with plastics material. One of the ends of the chamber 3b is closed by the membrane of the PCO 2  electrode. The membrane is spaced from a pH sensitive glass electrode by a fibre spacer and the space filled with a buffered bicarbonate electrolyte. PO 2  electrode The semi-permeable membrane of the electrode closes the other end of the chamber 3b and also an outer tube constituting an electrolyte reservoir. Within the tube are two concentric half cells consisting of a Ag/Ag Cl anode and a platinum cathode. Circuitry Fig. 1 (not shown). The outputs of the pH and pH reference electrodes are applied to a differential amplifier the output of which expresses pH on a digital meter. Similarly the outputs of the PCO 2  and PO 2  electrodes are expressed on respective digital meters. In addition an analogue calculator is provided to give HCO #3  from the outputs of the pH and PCO 2  electrodes. The total CO 2  is obtained from a further calculator to which is applied the HCO 3  value and the output of the PCO 2  electrode. Base excess is also calculated from the values of HCO 3  and pH.
Patent GB-1380084-A (GB)
Title: Magnetic printing bases and methods of making same
IPC: B41F27/02
Filed: 1971-11-09
Abstract: 1380084 Moulding printing cylinders MONARCH MARKING. SYSTEMS Inc 9 Nov 1971 [9 Nov 1970] 48419/71 Heading B5A [Also in Division B6] A method of making a cylindrical magnetic base for mounting a printing plate, comprises the steps of providing a cylindrical member 15, Fig. 6, placing at least two magnetic circuit means 13<SP>1</SP>, 12 on the member, each circuit means including annular magnet means disposed between a pair of annular magnetizable plates 12, said plates having a greater diameter than said magnet means and placing said cylindrical member with said magnetic circuit means in a mould 31, 32, 33, 34, Fig. 5. Non-magnetic mouldable material is flowed between the plates of each magnetic circuit means around the associated magnet means, and beyond the final desired diameter of the base and the portions of all the plates and non-magnetic material beyond the final desired diameter of the base are trimmed off.
Patent GB-1240274-A (GB)
Title: Method of impregnating porous ceramics
Inventor: NELL DAVID J
IPC: C04B41/87
Filed: 1968-10-15
Abstract: 1,240,274. Impregnated porous ceramics. DRESSER INDUSTRIES Inc. 15 Oct., 1968 [30 Oct., 1967], No. 48765/68. Heading C1J. A porous ceramic is impregnated with non- colloidal ceramic particles by immersion in a liquid suspension of the particles which is vibrated at a frequency of at least 20 cycles per sec. Specified impregnants are Al 2 O 3 , Cr 2 O 3 , SiO 2 , ZrO 2  and TiO 2 ; the liquid is water or alcohol and a dispersant is preferred. Zircon discs are exemplified.
Patent GB-1268490-A (GB)
Title: Method of controlling fungal diseases in potato tubers
Inventor: GRAHAM DENNIS COULTHARD
IPC: A23B7/154
Filed: 1968-10-15
Abstract: 1,268,490. Treating potatoes. NATIONAL RESEARCH DEVELOPMENT CORP. 13 Oct., 1969 [15 Oct., 1968], No. 48824/68. Heading A2D. Fungal diseases in potatoes are controlled by treating the tubers with an alkyl amine or salt thereof, to kill or inhibit fungal growth. The amine or salt thereof may be applied in a solid, liquid or gaseous phase. The preferred treatment is the use of gaseous secondarybutyl amine.
Patent GB-1026379-A (GB)
Title: Process and apparatus for the drying of grain
IPC: F26B17/12
Filed: 1964-12-02
Abstract: 1,026,379. Drying grain. G. M. G. COUTEAU. Dec. 2, 1964 [Dec. 21, 1963; Nov. 9, 1964], No. 48956/64. Heading F4G. [Also in Division A2] In apparatus for drying grain, a portion of the moisture extracted by hot air introduced through the perforated wall 11 of a container 1 for passage through grain falling downwardly adjacent the wall 11 is reintroduced into the grain in a continuous process as it is elevated by an Archimedean screw 7 along the axis of the container by passing the hot, damp air therethrough. The air is finally extracted through an aperture (not shown) at the top of the container and the grain after successive recycling until dried is removed through a lower gate 4.
Patent GB-1119685-A (GB)
Title: Track-laying vehicle
IPC: B62D11/08
Filed: 1966-11-02
Abstract: 1,119,685. Steering tracked vehicles. KLOCKNER-HUMBOLT-DEUTZ A.G. 2 Nov. 1966 [17 Dec., 1965], No. 49093/66. Heading B7H. For a tracked vehicle having hydraulically actuated steering brakes 3 and 4 and steering clutches 1, 2 and also one brake and clutch for each track operable by a foot or hand lever 47, 48, there is provided a control unit 5 provided with a pressure fluid from a pump 6 through a filter 8, the control unit having one of the spool valves 12, 13, 20, 21 for each clutch and brake, and associated with each spool valve a pressure regulating valve 26, 27, 24, 25 respectively so that the maximum fluid pressure for disengaging the steering clutches is reached before the valves 24, 25 respond. The spool valves are held in the closed position by resilient stops 51 and the brake spools 20 and 21 may be moved independently from their adjacent clutch spools to allow braking without de-clutching. If all the spool valves are closed fluid flows through a relief valve 17 to a sump via pipe 18. In operation if for example the spools of valves 13 and 21 are moved from a closed position, pressure fluid flows through pipe 10, past the spool of valve 13, through pipe 15 to partially operate clutch 2. Fluid also passes to a cylinder 46 loading spring 40. Further displacement of valve 13 brings about a stronger loading of spring 40 so that there is a corresponding pressure rise in pipe 15. When the clutch is completely disengaged the upper end of spool 21 is contacting sleeve 38 of a spring 36. Further displacement of the spools has no effect on the clutch but pressure buildup in pipe 15 causes valve 9 to open allowing pressure fluid to pass through pipes 19 and 23 to the brake 4. Fluid also passes through pipe 33 thereby causing spool 29 of valve 25 to load spring 36 Further displacement of the spools 13 and 21 eventually causes the spring 36 to reseat spool 29, the brake 4 then being fully operated.
Patent GB-1085315-A (GB)
Title: Improvements in or relating to amplitude modulated transmitters
IPC: H03C1/06
Filed: 1964-12-03
Abstract: 1,085,315. Amplitude modulation. C.S.F. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Dec. 3, 1964 [Dec. 4, 1963], No. 49251/64. Heading H3R. Modulating signals from source 28 which are applied via amplifier 27 to modulate the output of a modulated amplifier 30 supplied with a carrier signal from U.H.F. oscillator 29, are also applied via amplifier 31 to further modulate the signal in the output modulating amplifier stage 20. A negative feedback signal derived from the output signal via pick-up 22 and detector 23 is fed back to the amplifier 27. The output stage 20 is a multiple cavity klystron having the modulating signal fed to its modulating anode and the amplifiers 27, 31 may operate in Class A and B, respectively.