baber/WOPTO huggingface dataset:
Patent GB-1490714-A (GB)
Title: Liquid ionography
IPC: G03G15/054
Filed: 1975-10-20
Abstract: 1490714 Deionizing liquids electrolytically ONTARIO CANCER INSTITUTE 20 Oct 1975 [31 Oct 1974] 47259/74 Heading C7B [Also in Division G2] Radiographic images are recorded as charge patterns on a dielectric foil 5 defining one surface of an electric field region 1 containing a liquid which is ionized by X or gamma radiation. Suitable liquids are tetra methyl lead, tetra methyl tin, tetra methyl bismuth, tetra-isobutyl tin or tetraethyl lead. Prior to use the liquid is stored in a purification chamber 7 where it is deionized by a field created between two electrodes 9a, 9b.
Patent GB-1489406-A (GB)
Title: Water-soluble dyes
IPC: C09B23/00
Filed: 1974-11-06
Abstract: 1489406 Water-soluble dyes IMPERIAL CHEMICAL INDUSTRIES Ltd 17 Oct 1975 [6 Nov 1974] 47972/74 Heading C4P Novel water-soluble dyes having the formula (where D is a chromophoric residue and the N atom is directly attached to a carbon atom in D; R<SP>1</SP> is H or lower alkyl; R<SP>2</SP> and R<SP>3</SP> independently are H, hal, lower alkyl, lower alkoxy, or nitro and n is 1 or 2) are prepared by reacting the dyes of formula with an acylating agent capable of introducing the radical of formula D is preferably a radical of a dye of the azo, anthraquinone, methine or nitro series. The dyes are used for colouring synthetic polyamide textile materials.
Patent GB-1240537-A (GB)
Title: Improvements relating to photographic apparatus
IPC: G03B17/52
Filed: 1969-09-30
Abstract: 1,240,537. Self-processing cameras. POLAROID CORP. Sept. 30, 1969 [Oct. 1, 1968], No. 48027/69. Heading G2A. Film units 22, of the self-processing type are passed, after exposure, between rollers 38, 40 which spread the processing liquid from a pod 28 between the film sheets 24, 26 by a film-advancing means which is disabled by the movement of the film unit after it has entered the bite of the rollers. The film sheets then remain stationary until removed manually from the camera through slot 100. As shown, the rollers are driven by a motor 61, the drive being transmitted to a gear 62 secured to roller 38. The film-advancing means comprises a pick arm 46, the forward end being shaped as a downwardly extending section 50 having a tooth 52 with a sloping edge 56. Thus when pick arm 46 moves towards the rollers, tooth 52 engages in a perforation at the edge of the film and thus carries the film with it. When arm 46 moves in the reverse direction, the tooth 52 slides out of the perforation because of the sloping edge 56. This reciprocating movement of arm 46 is derived from gear 62 which drives, via an intermediate gear 64, a further gear 66. This has an eccentrically mounted pin 68 coupled by a link 58 to a member 44 to which arm 46 is secured. On the exit side of the rollers a clockwise-biased plate 82 is mounted on a pivot 86, and above it is a deflecting plate 84. Plate 82 has an arm 90 ending in a bent portion 92. The intermediate gear 64 is mounted on a pin 65 carried by an arm 70 which is pivoted to the axle 72 of roller 38. An arm 78 mounted on a pin 80 is spring-biased so that it bears against arm 70, and thus urges gear 64 into engagement with gear 66, as in Fig. 2. As the film sheet passes between the rollers, its leading edge engages plate 82 and pivots it anti-clockwise. Its end 92 consequently engages arm 78 which is likewise pivoted anti-clockwise, and thus disengaged from arm 70. The peripheral force of gear 62 on gear 64 causes the latter to move out of engagement with gear 66, since it is no longer spring-urged by arm 78, Fig. 3, (not shown). Thus the reciprocating movement of pick arm 46 stops. The rollers continue to move the film sheet towards exit slot 100, and the drive is then stopped. The leading edge of the film can then be grasped, and pulled out of the camera by the user.
Patent GB-1243255-A (GB)
Title: Electrostatic copy paper and coating composition for such paper
IPC: G03G5/05
Filed: 1968-10-10
Abstract: 1,243,255. Polymer compositions. DESOTO Inc. 10 Oct., 1968 [24 Oct., 1967], No. 48135/68. Heading C3P. [Also in Division H1] A coating composition comprises an inert organic solvent having dissolved therein an insulating resin binder and containing from 250 to 4000 parts per million of manganese based on the weight of resin, in the form of manganous chloride and/or bromide. The composition may incorporate zinc oxide and be coated on paper to give an electrophotographic element. The solvent may be xylene, benzene, toluene, methyl ethyl ketone, butanol, propanol or mixtures thereof. The binder and is preferably a copolymer of styrene, 2 ethylhexyl acrylate and acrylic acid but may be a copolymer of vinyl acetate, methacrylic acid ester or crotonic acid or an alkyd resin formed from phthalic anhydride, glycerine and linseed oil fatty acids and copolymerized with styrene. The zinc oxide may be sensitized by a mixture of dyestuffs.
Patent GB-1116449-A (GB)
Title: Digital reading instrument
IPC: G01D5/243
Filed: 1965-11-12
Abstract: 1,116,449. Measuring temperature electrically. UNITED SYSTEMS CORPORATION. Nov. 12, 1965 [Nov. 16, 1964], No. 48160/65. Heading G1N. Apparatus for measuring temperature comprises a negative temperature coefficient thermistor 13 in a self balancing D.C. bridge circuit having a digital display 22. Potentiometer 16 is a linear potentiometer with a function shaping network consisting of resistors (41, 42, 43), Fig. 2 (not shown) connected across tapped portions of the potentiometer to match its output to the characteristic of thermistor 13. Resistor 12 is chosen to have a resistance which is midway between the extreme resistances of the thermistor. In Fig. 2 (not shown), four jacks for connection to four thermistor probes and also a calibration resistor or decade resistance box (70) may be selected by a switch (31). Dummy resistors (80, 81, 82, 83) are substituted in the absence of probes to protect the bridge circuit. A second potentiometer (not shown), which is linear, may be driven by the gear train 23 to provide an analogue signal for control or recording.
Patent GB-1335886-A (GB)
Title: Air conditioning apparatus
IPC: F24F1/037
Filed: 1971-10-18
Abstract: 1335886 Air conditioning FRITZ HAUGG KG 18 Oet 1971 [18 June 1971] 48322/71 Heading F4V An air conditioning apparatus comprises a housing which forms a vertical cabinet extending substantially from the floor to the ceiling of the room where it is installed. The housing contains a U-shaped channel 5, having two links 6, 7 which extend over the height of the housing. Room air is drawn in through an inlet 8 into channel 7 and can be mixed with fresh air drawn in through an inlet (10). The mixed air passes down channel 7 through an air humidifier 13 and is deflected into the channel 6 through a filter 14. In the channel 6 are situated an evaporator 18 of a refrigeration system, and a heat exchanger 16 in a heating chamber 12, which are operable independently. A blower 15 draws the air through the conditioning device and out into the room through an outlet 9.
Patent GB-1150348-A (GB)
Title: Mixed Esters and Foames Polymers therefrom
Inventor: SIKORA JOSEF
IPC: C08G2/00
Filed: 1965-11-15
Abstract: 1,150,348. Mixed esters and foamed polymers thereof. CANADIAN INDUSTRIES Ltd. 3 Nov., 1966 [15 Nov., 1965], No. 48327/65. Headings C3C and C3R. A mixed ester composition, suitable for the manufacture of polymeric foams, comprises an aromatic polycarboxylic acid residue linked by ester linkages to both a polyhydric alcohol residue and the residue of the hydroxyl groupcontaining alkaline condensation products of 2 - formyl - 3,4 - dihydro - 2H - pyran. The dihydropyranyl mixed ester products are prepared in three stages:-(a) 2-formyl-3,4-dihydro-2H-pyran is condensed, in the presence of an alkaline catalyst, to give dimeric and trimeric products; (b) part of the hydroxyl groups of the mixed condensate are interchanged with part of the alkyl ester groups of the aromatic polycarboxylic alkyl esters using an ester interchange catalyst; (c) the remaining alkyl ester groups on the aromatic polycarboxylic esters are ester interchanged, at least partially, with the hydroxyl groups of the polyhydric alcohol, using an ester interchange catalyst. Alternatively the process may be reversed, i.e. stage (c) becomes (1) in the alternative process, but the monohydric alkyl alcohol eliminated as a result of the ester interchanged must be removed as a by-product before addition of the dihydro pyranyl mixed esters. Typical aromatic polycarboxylic alkyl esters are dimethyl phthalate, diethyl phthalate, tetramethyl pyromellitate and trimethyl trimellitate. Polyhydric alcohols include polyalkylene glycols, particularly polypropylene glycol, ethylene glycol, castor oil, sugar alcohols, alkyl and acyl cellulose derivatives, polyether condensates of polyhydric alcohol and olefin oxides, 1,5-pentane diol, glycerol, 1,2,6-hexane triol, hydroxy-containing esters and polyesters obtained by the condensation of polyhydric alcohols and polybasic acids. The alkali metals and their alkoxides can be used as catalysts for both the ester interchange and condensation reactions. The dihydropyranyl mixed ester products may be foamed and polymerized in the presence of a foaming agent plus catalyst. It is general but not essential to add a surfactant and other additives such as flame retardants, e.g. pentachlorophenol, tris- (2,3-dibromopropyl)-phosphate, trichloroethyl phosphate, 2,2 - bis - (3<SP>1</SP>,5<SP>1</SP> - dibromo . 4<SP>1</SP> - hydroxyphenyl) propane, chlorendic acid and polyvinyl chloride with or without antimony oxide, and viscosity modifiers, e.g. polyvinyl chloride, vinyl acetate/vinyl chloride copolymers and rubbers; other additives mentioned are 3,4 - dihydro - 2H - pyran - 2 - methyl - (3,4 - dihydro - 2H - pyran - 2 - carboxylate), siloxane oxyalkylene copolymer as a surfactant and trichloromonofluoromethane as a foaming agent. Polymerization catalysts can be acidic, Lewis acids and other strong proton donors such as p-toluene sulphonic acid, or non-acidic such as iodine compounds and others.
Patent GB-1356620-A (GB)
Title: Purifying mixtures of aliphatic dicarboxylic acids
IPC: C07C51/44
Filed: 1971-10-19
Abstract: 1356620 Dicarboxylic acids BADISCHE ANILIN- & SODA-FABRIK AG 19 Oct 1971 [20 Oct 1970] 48511/71 Heading C2C Mixtures of adipic, glutaric, and succinic acids prepared by oxidizing mixtures of cyclohexanol and cyclohexanone, or cyclohexane with nitric acid at elevated temperature in the presence of copper and vanadium as catalyst are purified by distilling off the nitric acid and water and feeding into a falling film evaporator at 170 to 240‹ C. and a pressure from 1 to 20 mm. The catalyst may be recovered from the residue either by leaching with water or by burning with natural gas and precipitating as oxide from the flue gas by electrostatic methods or cloth filter.
Patent GB-1280864-A (GB)
Title: A process for mixing and a mixer for powdered nuclear fuels
Inventor: BEISSWENGER HEINRICH
IPC: B01F7/04
Filed: 1969-10-03
Abstract: 1280864 Mixing powdered material ALKEM ALPHA-CHEMIE UND METALLURGIE GmbH 3 Oct 1969 [5 Oct 1968] 48623/69 Heading B1C [Also in Division G6] A mixer for powdered nuclear fuels (e.g. plutanium and uranium of different isotope compositions) has a cylindrical container with a rotatable hollow inner shell 2 the diameter of which is greater than half that of the outer shell 1 and which carries plough blades 3 moving in the annular mixing space 7. The outer shell may be in separable halves and may be rotatable through 180 so that it may be filled from above, and discharged downwardly through the same aperture. The space between the inner shell 2 and the shaft 4 may be filled with reaction absorbing material (e.g. cadmium and boron) and hydrogen-containing reaction moderating material, either in admixture or with a layer of absorber (e.g. in the form of another cylindrical shell) surrounding the moderator. The annular shape of the mixing chamber also assists in avoiding criticality.
Patent GB-955328-A (GB)
Title: Improvements relating to multiple electrical-connection devices
IPC: H05K1/00
Filed: 1962-12-27
Abstract: 955,328. Mounting electrical equipment. ANCIENS ETABLISSEMENTS SUPLI. Dec. 27, 1962 [June 18, 1962], No. 48690/62. Heading H1R. [Also in Division H2] Circuit elements such as resistors 7, capacitors 8, transistors 9, are fixed mechanically and connected electrically by dipping their terminal wires between the turns of helical springs 4 soldered or welded by their ends on an insulating panel with a printed circuit on the reverse side. The springs are treated to reduce contact resistances and ensure good electrical connection. Circuit elements can also be connected together by wires 10 clipped between turns of the springs.
Patent GB-1161821-A (GB)
Title: Apparatus for Continuous Extrusion.
IPC: B21C23/24
Filed: 1966-11-01
Abstract: 1,161,821. Extruding. NATIONAL-STANDARD CO. 1 Nov., 1966 [2 Nov., 1965], No. 48835/66. Heading B3P. An extrusion press, particularly for sheathing a hard metal core such as steel, with soft metal such as aluminium, aluminium alloy or brass, comprises a pair of opposed chambers 31, 32 containing accumulator rams 55, 56 which act to maintain the extrusion process continuous. Metal billets 9 pre-heated in a furnace 260 are delivered to a billet transfer mechanism 266 which turns them into a vertical position during transfer into alignment with a billet chamber 10. The latter is heated by electric heaters disposed in bores 14 and controlled by thermocouples 40a. From chamber 10 the billet is extruded by a main ram 54, past a check valve 21 and into an extrusion chamber (43), Fig. 2 (not shown), formed between male and female dies (42), (41), Fig. 2 (not shown). During extrusion of the sheath, tension is applied to the sheathed wire (W) by a capstan. Simultaneously some of the extrusion metal passes through ducts (22), (23), Fig. 1 (not shown), into the accumulator chambers 31, 32. Main ram 54 is actuated on its extrusion stroke by piston 183<SP>1</SP> in cylinder 184<SP>1</SP> supplied with hydraulic fluid by a variable volume or variablespeed pump 188 through relief valve 200, check valve 191, accumulator 181 and main control valve 187. During any quick movement of the piston 183<SP>1</SP>, extra liquid is drawn directly from the reservoir 190 into the system by eductor 205. The accumulator rams 55, 56 are actuated by pistons 159 supplied with hydraulic fluid from accumulator 169 loaded by compressed air. During filling of the chambers 31, 32, the rams 55, 56 are loaded by low-pressure air admitted into the accumulator 169 through valve 221. At the end of the main ram stroke, high-pressure air is admitted through valve 222 into the accumulator 169 to move the rams 55, 56 inwardly and thus continue the extrusion whilst a fresh billet is recharged into chamber 10. The strokes of rams 55, 56 are synchronized during both their inward and outward movements by racks 302, 301, engaging a pinion 303. If the rams are out of synchronism, pinion 303 moves to the right or to the left and actuates a limit switch (313), (314), Fig. 10 (not shown), which causes low-pressure hydraulic fluid, supplied by a pump (316), Fig. 4A (not shown), to be admitted to the inside of the piston 159 of the leading ram during the instroke to effect its retardation; during the outstroke the low-pressure fluid is used to accelerate the trailing rain. The press is controlled automatically by limit switches 225, 264, 224 which operate solenoid valves in a compressed-air control system, Figs. 5, 6 (not shown).
Patent GB-1487584-A (GB)
Title: Lamp control circuit
IPC: G03G15/04
Filed: 1974-11-12
Abstract: 1487584 Automatic control of lamps XEROX CORP 12 Nov 1974 [19 Nov 1973] 48869/74 Heading G1A [Also in Divisions G3 and H2] Lamp control apparatus Fig. I comprises: a long multi-vapour arc lamp 2; a chopper 40 exposing a photo-cell 12 to light alternately from opposite ends of the lamp 2, and providing a reference signal at the frequency of alternation; means 10, 21, 22 responsive to the photo-cell to provide phaseopposed signals representing non-uniformity of lamp brightness; and means 50 responsive to the phase-opposed signals and the reference signal for providing an output representing the amount and sense of the non-uniformity. A 15" metal-halide vapour lamp 2, Fig. 1 in a photo-electrophoretic copier may undergo cataphoresis resulting in an end-to-end imbalance in its brightness, remediable by introducing a D.C. component into its A.C. supply. Light from opposite ends is guided by light pipes 11 to a rotary or vibratory chopper 40 which alternately presents the light-pipe outputs at 1KHz to a photodiode 12. Any A.C. component in the photodiode output is shaped by a tuned amplifier 21 of bandwidth 80- 100 Hz and applied to a phase-splitter 22 providing signals ° 1 , ° 2 . A 1 KHz signal from the chopper drive circuit 40 is filtered and applied to a phase converter 48 which provides a reference signal adjustable for phase conformity with the amplifier 21 output. The reference signal is squared and split at 47 to provide REF and REF signals which gate alternate pairs of amplifiers in a phase detector 50 receiving the signals ° 1 , ° 2 , whereby there is provided a train of full-wave rectified pulses representing in magnitude and polarity the light imbalance. The detector 50 output, smoothed in a timebase generator 70, controls the rise gradient of a sawtooth determining a variable first interval between pulses of a train, this variable first interval alternating with a fixed second interval (typically 5 ms) controlled by a monostable. These pulses are sorted by switching logic 80 into trains of α and # pulses which occur at the beginnings of the variable and fixed intervals respectively. In a lamp switch circuit 90, Fig. 6, to which the claims of Specification 1487585 are directed (see Division H2), pairs of SCRs 91/93 and 92/94 supply currents of opposite polarities to the lamp 2 in response to triggering pulses derived from the trains α and # which alternate in a variable duty cycle. Commutating capacitors Cl, C2 ensure that when one pair of SCRs is triggered on, a pulse is applied to the opposite pair to reverse its polarity and so turn it off. To avoid momentary shortcircuits, inductors L1-L4 are interposed between each lamp terminal and respective corresponding junctions of a capacitor with an SCR.
Patent GB-1425016-A (GB)
Title: Winch arrangement
IPC: B66D1/74
Filed: 1972-10-24
Abstract: 1425016 Winches DONKIN & CO Ltd 9 Oct 1973 [24 Oct 1972] 48878/72 Heading B8B A winch comprises two barrels 11, 12 arranged to receive a cable 18, the barrel 11 being driven, first receiving the cable 18 and being disposed with its axis normal to the direction of the cable 18. The axes of the two barrels 11, 12 are inclined to each other at an angle given by the formula tanα=P1/D, where P1 is the pitch of the grooves on the barrel 11 and D the diameter of the barrels, the pitch P2 on the idler barrel 12 being given by the formula P2=P1/cosα.
Patent GB-1435485-A (GB)
Title: Winch drum provided with side flanges and a separating flange
IPC: B66D1/30
Filed: 1974-11-12
Abstract: 1435485 Winches HYDRAULIK BRATTVAAG AS 12 Nov 1974 [13 Nov 1973] 48951/74 Heading B8B A winch drum having side flanges 11, 12 and a separating flange 13 dividing the drum into tension and storage parts 14, 15 for a hawser 16 being handled, includes a grooved hawser guiding device 17 mounted on the separating flange 13 and being formed as a circular disc or disc section. In the embodiment shown, the guiding device 17 comprises a peripherally grooved disc 17a rotatably journalled at 23 at an angle to the separating flange, and between lugs 24 and 25 formed on the separating flange 13, the latter being formed with sloping surfaces 21, 22 for guiding the hawser to and from the disc. In the embodiment of Figs. 3 and 4 (not shown) the guiding device comprises a disc section pivotally mounted in the separating flange for oscillation between limit stops. In the embodiment of Figs. 5 and 6 (not shown) the disc or disc section is located on the tension side of the separating flange and parallel thereto, the hawser being guided to and from the disc by pins or projections on the outer perimeter of the separating flange. In a final embodiment, the disc or disc section is permanently fixed to the edges of a slot in the separating flange.
Patent GB-1462447-A (GB)
Title: Key actuated electric switches and keyboards for use in communi cation devices
IPC: H01H13/12
Filed: 1974-11-13
Abstract: 1462447 Mechanical switches DEUTSCHE TELEPHONWERKE UND KABELINDUSTRIE AG 13 Nov 1974 [17 Nov 1973] 49185/74 Heading H1N In a key actuated electric switch a movable contact plate 7 Fig. 1, first moves on depression of the key 9 to engage one or more fixed contacts 82 and then tilts to engage at least one further contact 83. The plate 7 has apertures for slidably mounting on a central pin 36 of a platen 3 depressed by projections 91 on the key 9 which extend through a keyboard grid 2. Springs 4 beneath the platen 3 operate to retract the key 9 and springs 6 resiliently retain the contact plate 7 and take up excess movement of the key 9. Lamps 11 are mounted centrally of the keys 9 and have terminals 81 extending through the printed circuit board 8 carrying the contacts 82, 83.
Patent GB-1275330-A (GB)
Title: Amidothiol phosphoric acid esters, processes for producing them and compositions containing them
IPC: A01N57/28
Filed: 1970-10-16
Abstract: 1275330 Insecticides containing amidothiol phosphoric acid esters SUMITOMO CHEMICAL CO Ltd 16 Oct 1970 [23 Oct 1969] 49253/70 Heading A5E [Also in Division C2] An insecticidal composition comprises a compound of the formula I: where R 1  is methyl, ethyl or propyl, R 2  is. C 3-10  alkenyl or C 2-10  alkylthioalkyl, alkoxyalkyl or cyanoalkyl and A is C 1-3  alkyl or optionally halogen-substituted C 3-6  alkenyl or alkinyl, together with a suitable carrier and one or more known insecticides. Specified known insecticides are organo phosphorus compounds such as Sumithion and Dimethoate, pyrethroid insecticides such as allethrin and phthalthrin, organo-chlorine insecticides such as BHC and DDT and carbamate insecticides such as 3, 4-dimethylphenyl-, 2-secbutyl phenyl- or 3-methyl phenyl-N-methyl carbamate.