baber/WOPTO huggingface dataset:
Patent GB-1169925-A (GB)
Title: Improvements in and relating to Cameras
IPC: G03B7/085
Filed: 1966-11-18
Abstract: 1,169,925. Exposure control apparatus. AGFA-GEVAERT A.G. Nov.18, 1966 [Nov. 23, 1965], No.51831/66. Headings G2A and G2E. A diaphragm aperture provided between blades 4, 5 carried by flexible arms 2, 3, is adjusted by varying the amplitude of oscillation of arms 2, 3 produced by coils 8, 9, energized by an A.C. generator 10. The amplitude is varied according to the resistance of a photo-resistor 11 subject to scene light. In a modification Fig. 2 (not shown) a single coil (15) is provided. As applied to a cine camera having a rotary shutter driven by a motor 24, Fig. 3, a coil 18 vibrates a resonator 20 of magnetic material or carrying a magnetic armature. The coil 18 is connected to a circuit (16, Fig. 4, not shown) which includes a transistor (27) rendered periodically conductive to supply a coil (18a). Reduced scene light produces, through a reduction in amplitude of the blades 21, 22, Fig. 3, an increase in aperture. In another modification, an A.C. generator (32 Fig. 6 not shown) supplies an electromagnet (33). Alternatively, the electromagnet (33, Fig. 7, not shown) is supplied with pulsed current through a switch (34) by a photo-voltaic cell 17. Another means of producing a pulsed supply is to position a photo-voltaic cell (36, Fig. 8, not shown) behind a rotating shutter blade (25) or so as to receive reflected light Fig.9 (not shown). Diaphragm blades 38, 39, Fig. 12, loaded by spiral springs 40, 41 are actuated by a leaf spring 42 vibrated by an electromagnet 43 supplied with A.C. the amplitude of which is varied according to the intensity of illumination. A stationary blade (14, Fig. 14 not shown) co-operates with an oscillating blade (22). In another embodiment, the frequency of the supply to coils (47, 48, Fig. 15 and 16, not shown) may be modulated by a photo-resistor included in an R.C. circuit. Changes in the output frequency of the multi-vibrator cause the desired change in amplitude for phase oscillation of the diaphragm blades. Alternatively, magnets (67, 68, Fig. 18, not shown) are supplied with out of phase currents by a circuit Fig. 19 (not shown) including multivibrators (69, 70, 71) and a differentiating circuit having diodes (81, 82). A testing key (not shown) may be provided to switch-in fixed resistors in phase of the photoresistors for testing the battery voltage.
Patent GB-1113833-A (GB)
Title: Pulse width discriminator circuit
IPC: H04N1/409
Filed: 1965-12-09
Abstract: 1,113,833. Noise suppression in pulse circuits; video signal circuits. XEROX CORPORATION. 9 Dec., 1965 [30 Dec., 1964], No. 52191/65. Headings H3T and H4F.. Short duration level excursions for example of the video signal in a facsimile transmitting system, are eliminated by passing the signal through two channels respectively responsive to negative and positive changes exceeding a given duration and utilizing the output of the channels respectively to set and reset a bi-stable circuit. Negative-going excursions of the video signal waveform (A of the waveform diagrams in Fig. 3, not shown) from amplifier 3 charge a capacitor 14 through resistors 7 and 9 (waveform B). If the excursions last long enough the capacitor voltage reaches a value sufficient to cut off transistor 20. The output of the transistor is differentiated at 44 and the resulting positive pulse is passed by diode 42 and sets a bi-stable circuit 100. At the end of the positive signal the capacitor discharges rapidly through diode 4. Positively-going excursions exceeding a given length are similarly processed in the lower channel and reset the bi-stable circuit. Thus the output signal (J) follows the input signal excursions after a delay and unwanted short duration excursions (V, W, X in waveform A) are eliminated.
Patent GB-1078020-A (GB)
Title: Activation of alumin um
Inventor: WILLIAMS BILLY JOHN
IPC: C07F5/04
Filed: 1965-12-09
Abstract: In the process for preparing organoaluminium compounds of the formula AlR1R2R3, wherein R1 and R2 are hydrocarbon radicals containing at least 2 carbon atoms and R3 is H, halogen or a hydrocarbon of at least two carbon atoms, from aluminium, a halide of Ti, Zr, Nb, V, Sc, U or Hf is present as catalyst preferably in amount 0.01 to 2% by wt. of the Al.  Preferably the metal halide is added to the Al powder which may be reacted with trialkyl aluminium compounds and hydrogen to give a dialkylaluminium hydride, or with hydrogen and an olefin (e.g. C2-C6) and where appropriate an aluminium halide to give trialkyl aluminium compounds of dialkyl aluminium halides, the reactions being carried out at elevated temperatures and pressures, e.g. 80-200 DEG  C. and 60-350 atmospheres.
Patent GB-1401483-A (GB)
Title: Film winding mechanism
IPC: G03B17/42
Filed: 1972-11-13
Abstract: 1401483 Film wind-on EASTMAN KODAK CO 13 Nov 1972 [12 Nov 1971] 52326/72 Heading G2A Film wind-on mechanism comprises push member 1, spring-biased rack 2, toothed segments 4, gear wheels 5 and 7 (toothed segment 4 and gear wheel 5 being coupled during forward movements only), spool 9a, pawl 6 in the form of an angular leaf-spring having two spring legs 6b and 6c with staggered ends and a housing 10 against which pawl 6 abuts at the end of the wind-on stroke of member 1 due to slackening of the wound-on film.
Patent GB-1256103-A (GB)
Title: Improvements in ultraviolet light stabilized polycarbonate article
IPC: C08J7/04
Filed: 1969-10-27
Abstract: 1,256,103. Ultraviolet light stabilized polycarbonate laminates. GENERAL ELECTRIC CO. 27 Oct., 1969 [28 Oct., 1968], No. 52542/69. Heading B5N. A laminate is produced by bringing together an aromatic carbonate polymer substrate and an acrylic copolymer film of 1-10 mils thickness and containing uniformly dispersed throughout 0À25-5% by weight of an ultraviolet light absorbent, e.g. a benzophenone, substituted benzophenone or benzotriazole, based on the weight of the acrylic copolymer film, an elevated pressure and a temperature of at least 325‹ F., the temperature being sufficiently high to ensure bonding but not sufficiently high to result in substantial degradation or discoloration of the aromatic carbonate polymer, and cooling the resulting laminate to room temperature. The aromatic carbonate polymer substrate which may be of at least 10 mils thickness may also contain an ultraviolet light absorbent and may be prepared by the reaction of a dihydric phenol with a carbonyl halide, carbonate ester or haloformate. The acrylic copolymer may be a copolymer of acrylic acid, a substituted acrylic acid, an ester of acrylic acid or a substituted acrylic acid with an alcohol containing 1-18 carbon atoms or acrylonitrile or a mixture thereof. The acrylic copolymer film and an aromatic polymer sheet may be bonded together in a press equipped with heated platens or may be contacted through the nip of a pair of rolls which may be heated. The aromatic carbonate polymer may be clear or pigmented and may be in the form of sheets for window glazing or in the preparation of signs.
Patent GB-1215923-A (GB)
Title: Temperature sensing apparatus
Inventor: PALMER KENNETH PERCIVAL
IPC: G01K11/22
Filed: 1966-11-24
Abstract: 1,215,923. Measuring temperature electrically JOSEPH LUCAS (INDUSTRIES) Ltd. Feb. 13, 1968 [Nov. 24, 1966], No. 52642/66. Heading G1N. The temperature of a fluid, e.g. that of the gases flowing through the jet pipe of a gas turbine engine, is measured using apparatus in which the flow of gas from a nozzle 17 interferes with the flow of gas between nozzles 10, 14, the nozzle 10 being connected to an inlet 12 from the jet pipe and the nozzle 14 being connected via a device 18 with the nozzle 17. The device 18 is such that it produces a time dependent on the temperature of the gases in the gas flow between the nozzles 14, 17 so that the flow of gas between the nozzles 10, 14 is interrupted at a frequency dependent on the temperature of the gases. The pulses produced in the flow into nozzle 14 are transmitted via passage 15, diaphragm 21 to an electrical pressure sensitive transducer 23 from which a signal is derived which is indicative of changes in frequency of the pulses and therefore of the temperature of the gases. This signal may be used to control the fuel supply to the engine. The nozzles 10, 14, 17 are located in a chamber 13 connected to the inlet pipe 12, passages 11, 27 being connected across a restriction 28 in the pipe 12 across which a constant pressure difference, independent of temperature changes in the gas, is maintained by the provision of a further venturi restriction 29 through which the gases pass at sonic speeds.
Patent GB-1513650-A (GB)
Title: Surgical clip
IPC: A61F6/20
Filed: 1976-12-22
Abstract: 1513650 Clamps RESEARCH CORP 22 Dec 1976 [26 Jan 1976] 53500/76 Heading E2B A surgical clip for occluding tubes in a living animal comprises first 14 and second 12 jaw members, the first jaw member having two side flanges 50, 52, Figure 2, and a recess 54, Figure 1, extending between the flanges, the recess having a uniform arcuate crosssection in a direction perpendicular to the flanges, the flanges having bores 56 therethrough, the second jaw member being received between the flanges and having an arcuate bearing portion 60 and a journalling arrangement, preferably comprising a bore, a pivot pin 18 passing through the bores, and a generally U-shaped spring member 16 engaging remote major surfaces of each jaw member and being slidable from a first position where it urges the jaw members open and a second position where it urges the jaw members together. The bridge portion 21 of the spring member in conjunction with the side flanges provides a smoothly contoured hinge end thereby reducing to a minimum zones for the entrapment of tissue. The jaw members are each provided with projections 20a, b, c, d, 26a, b, c, d, which cooperate with bores in the opposite member when the jaw members are closed. The ends of legs 17, 19 of the spring member have turned-in portions 46, 48 which in the second position are received in slots 40, 36 in the jaw members. The legs 17, 19 slide in grooves 30, 38 in the jaw members. The jaw members are preferably made of polycarbonate.
Patent GB-1488485-A (GB)
Title: Method of treatment of sugar-cane
IPC: A01N47/24
Filed: 1973-11-20
Abstract: 1488485 Asulam for regulating sugar cane growth MAY & BAKER Ltd 18 Nov 1974 [20 Nov 1973] 53734/73 Heading ClB Asulam or a salt thereof is applied to sugar cane after the time of close in, to increase the sucrose, content thereof. Application is preferably made 2 to 11 weeks before harvesting, and may be made to the foliage of the cane in an amount of 0À05 to 12 kg. per hectare. The asulam may be applied as a composition comprising a liquid or solid carrier, and a surface active agent, another growth regulator, a fertilizer, trace elements, or an insecticide, the composition containing 0À01-95% by weight asulam.
Patent GB-1442060-A (GB)
Title: Dry shavers
IPC: B26B19/10
Filed: 1974-12-12
Abstract: 1442060 Dry shavers RONSON PRODUCTS Ltd 12 Dec 1974 53886/74 Heading B4B A dry shaver I comprises a housing 1 enclosing a motor 6 wihch operates an output member 10 having a drive pin 26 and a clutch mechanism for selectively connecting the drive member with the movable cutter 25 of a long hair trimmer 14, the clutch including a driven member 28 coupled with the trimmer cutter and is arranged for manual rotation relative to the drive member between a first angular position in which it is drivingly engaged by the drive member and a second angular position in which the drive member is free to reciprocate relative to the driven member. The driven member 28, e.g. of nylon, is formed with a circular portion 30 and an integral square portion 31, a slot 29 passing through both parts for engagement with the drive pin 26. The square portion 31 is adapted to engage in an elongated slot 32 formed in a manually-operated rotatable lever 33, 34 and the circular portion 30 in a fork 27 provided on the movable trimmer cutter 25. With the lever in the position a shown in Fig. 3, the drive pin 26 moves freely on the slot 29 without transmitting movement to the cutter 25. When the lever is rotated to position b the pin moves the driven member together with the cutter, the square portion 31 being free to move in the elongated slot 32 In the modification shown in Fig. 4, the driven member 28 is rotated by means of a reciprocable slide 41 connected to the driven member by a flexible arm 43. In other modifications, the driven member may be formed with a slot (47), Fig. 5 (not shown), of varying width and may be defined by a through opening, a depression or by raised walls, Fig. 6 (not shown). In further modifications the driven member may be provided with a pair of drive dogs (56, 57), Fig. 7 (not shown), or a cam abutment, Fig. 8 (not shown), engageable with a pair of drive pins.
Patent GB-1092649-A (GB)
Title: Method and apparatus for forming composite electrical contact elements
IPC: H01H11/04
Filed: 1965-12-20
Abstract: Ductile silver mixtures for switch contacts include:-  85% silver - 15% nickel 90% silver - 10% iron 97% silver - 3% carbon 88% silver - 12% cadmium oxide 75% silver - 25% tungsten.
Patent GB-1377993-A (GB)
Title: 6alpha, 16alpha-dimethyl-steroids
Inventor: KIESLICH K
IPC: C07J7/00
Filed: 1971-11-22
Abstract: 1377993 6α,16α - Dimethyl - #<SP>1,4</SP> - pregnadienes SCHERING AG 22 Nov 1971 [28 Nov 1970] 54050/71 Heading C2U Novel steroids of the formula (wherein R is H or acyl, X is F, Cl or Br, and Y is #-halogenomethylene the halogen atom of which has an atomic weight equal to or smaller than that of X, or Y is #-hydroxymethylene or carbonyl) are prepared from corresponding #<SP>9(11)</SP>-steroids or their #<SP>4</SP>-analogues by adding 2 halogen atoms or HOCl or HOBr across the 9(11)-double bond followed when required by (a) conversion of a 9α-bromo- or chloro-11#-ol to a 9,11#-epoxide and conversion of this to a 9α - fluoro- or chloro - 11# - ol; (b) microbiological #<SP>1</SP>-dehydrogenation; (c) oxidation of an 11#-ol to an 11-one; (d) hydrolysis of a 21- acylate to a 21-ol; and/or (e) esterification of a 21-ol. #<SP>1</SP>-Dehydrogenation may for example be effected with Bacillus lentus or Arthrobacter simplex. 21 - Acetoxy - 6α,16α - dimethyl - #<SP>1,4,9(11)</SP>- pregnatriene - 3,20 - dione is prepared by converting 11α - hydroxy - 21 - acetoxy - 6α,16α- dimethyl - #<SP>1,4</SP> - pregnadiene - 3,20 - dione (prepared by acetylation of the corresponding 21-ol) to 11α-mesyloxy-21-acetoxy-6α,16α- dimethyl - #<SP>1,4</SP> - pregnadiene - 3,20 - dione and then heating this with glacial acetic acid and sodium acetate. 21-Acetoxy-6α,16α-dimethyl - #<SP>4,9(11)</SP> - pregnadiene - 3,20 - dione is prepared by heating 11#-hydroxy-21-acetoxy- 6α,16α - dimethyl - #<SP>4</SP> - pregnene - 3,20 - dione with pyridine, DMF and methanesulphonyl chloride.  The novel steroids are stated to be antiphlogistic agents with a lesser thymolytic side effect than comparable known steroids. They may be made up into pharmaceutical compositions with suitable carriers. Reference has been directed by the Comptroller to Specification 990,384.
Patent GB-1487327-A (GB)
Title: Fuel injection pumping apparatus
IPC: F02D1/02
Filed: 1973-11-23
Abstract: 1487327 Fuel injection pumps; starting fuel injection engines CAV Ltd 8 Nov 1974 [23 Nov 1973] 54412/73 Headings F1A and F1B In fuel injection apparatus wherein a feedpump 25 supplies fuel to the pumping chamber 11 of a fuel injection pump, the latter having a cam 13  angularly adjustable by a pressure responsive piston 38 to vary the timing, during starting the piston 39 is spring urged to its maximum retard position by being isolated from the pressure supply which normally effects its adjustment and simultaneously an excess of fuel is supplied to the chamber 11. A spring-loaded servovalve 38 controls the application of pressure to the piston 39, the valve being subjected to speed dependent pressure established in a passage 36 by metering valve 33 supplied by the feedpump 25. At start-up a valve 59 is closed to prevent the feedpump pressure from moving the piston 39 in the advancing direction or, alternatively, a valve 60 is closed to prevent fuel from the passage 36 operating the servovalve 38. A latch 58 is operated in conjunction with the valve 59 or 60 and this allows a piston 35 controlling the maximum excursion of a metering shuttle 19 to move to an excess fuel position in which the shuttle is able to enter a recess (not shown) in the piston instead of abutting a cam surface 34. Thus, at start-up the bore containing the shuttle 19 receives, through a passage 21 and a rotary valve 22, an excess amount of fuel which is subsequently displaced through a rotary valve 20 into the pumping chamber 11 by fuel admitted to the opposite end of the bore through a valve 23. The metering valve 33 is centrifugally controlled and throttles the fuel supply from the feedpump 25 to the passage 21. The valve 33 also co-operates with a valve 52 to establish a pressure in the passage 36 which is proportional to the square of the speed of the centrifugal weights 43. Pressure in the passage 36 moves the piston 35 whereby the maximum delivery is speed dependent. The valves 59 or 60 may be in the form of two ports (61, 62) which become interconnected by a groove (63) in the piston 35 when the latter is released by disengagement of the latch 58. In order to delay movement of the piston 35 after start-up, the pressure in the passage 36 may be prevented from acting over its complete end surface until displaced from its end position.
Patent GB-549820-A (GB)
IPC: C02F1/04
Abstract: 549,820. Distilling water; feed water boiler, supplying. MEURK, B. E., NOLAND, B H., and DELAHANTY, P. J. March 6, 1941, No. 3065. [Class 32] [Also in Group XIII] In steam raising and utilizing plant particularly for marine work of the kind described in Specification 549,821 in which make up feed and distilled water are obtained by evaporating sea or impure water by waste steam from the plant, the latent heat of the steam obtained from the sea water is conserved by passing the steam through a heat exchanger, in heat exchange with the condensate from the boiler, on its way to the hot well. The plant comprises a steam boiler 10, a prime mover 9 and other steam utilizing appliances 11, a condenser 12, a hot well 13 and a pump 14 returning feed water through a heater 15 to the boiler. Make up feed and distilled water are obtained by passing impure water preheated in the condenser 12 into an evaporator 17 in which it is distilled by heat exchange with exhaust steam from the appliances 11 passed through a coil 20. The improvement comprises condensing the steam thus formed and led off through line 19 in a heat exchanger 41 by heat exchange with condensate from the condenser 12 fed through a coil 42 and thence to the hot well 13. A vacuum is maintained in the heat exchanger 41 by means of a steam jet pump 45 the jet being operated by steam from the boiler 10. A vacuum is also maintained on the condenser 12 through the line 50, the jet discharging into the hot well 13. The coil 20 discharges into a separator 54 from which condensate is fed through line 55 and coil 42 to the hot well. The separator 54 and coil 20 are vented through lines 57, 58 to the line 19. In a modification a second steam jet pump is provided to create a vacuum in the heat exchanger 41 and is operated by exhaust steam from line 21 which then discharges into coil 20. The steam may also be condensed by direct discharge of condensate in a spray into the exchanger 41, Fig. 3. Reference has been directed by the Comptroller to Specification 272,693, [Class 123 (ii)].
Patent GB-1381484-A (GB)
Title: Method of producing bodies with electrolytically coated surface portions and bodies produced by such method
IPC: C25D5/02
Filed: 1971-12-01
Abstract: 1381484 Selective electro-coating of metal components RAPENA PATENT-UND VERWALTUNGS AG 1 Dec 1971 [9 Dec 1970] 55827/71 Heading C7B A body formed from at least two hollow metal components, e.g. 100, 101, separated by an electrically insulating separator 103 which is positioned in the interior of at least one of the hollow components, is partially electro-coated e.g. by electro-plating or anodizing, for instance using A.C. current, by connecting one only of the hollow components to the electric current source during electro-coating. The components may be e.g. both of aluminium or one of aluminium and one of iron or steel. The separate components may be coated sequentially as above, e.g. to provide anodizing of aluminium parts and plating with copper or chromium for ferrous parts, or to anodize different parts to different colours.
Patent GB-1122354-A (GB)
Title: Method of preparing a wax dispersion and wax dispersion prepared by such method
IPC: C09K23/00
Filed: 1966-12-19
Abstract: A wax-in-water emulsion consists essentially of 10% to 60% by weight of wax, from 0.5% to 5% by weight of water-insoluble organic particles, a major proportion of which consist of b -1, 4 glucan or its derivatives, at least 1% by weight of the particles having size no greater than 1 micron and length to diameter ratio from 2:1 to 15:1; and water.  The emulsion may be used to coat metal, paper or glass.  The water insoluble organic particles may be combined with a minor proportion of sodium carboxymethyl cellulose.  The wax may be a natural or synthetic wax; examples are given.  The emulsion may contain triethanolamine, sorbitan mono-oleate, polyoxyethylene derivatives of esters of fatty acids and alcohols, borax.  In preparing the emulsion, the molten wax may be added to the aqueous dispersion of water-insoluble organic particles, or the heated aqueous dispersion may be added to the molten wax to give first a water-in-wax and then a wax-in-water emulsion, or the wax may be dissolved in an organic solvent, the solution mixed with the aqueous dispersion and the resulting emulsion heated to remove the organic solvent.  The emulsions may be diluted with alcohols.ALSO:Paper is coated using an aqueous wax dispersion containing 10% to 60% by weight of wax and from 0.5% to 5% of finely divided water-insoluble organic particles a major proportion of which consists of b -1, 4 glucan or its derivatives, at least 1% by weight of the particles having a size no greater than one micron and a length to diameter ratio of from 2:1 to 15:1.  On paper, the wax coating is caused to melt and is blended into the paper web to form waxed paper