baber/WOPTO huggingface dataset:
Patent GB-1389530-A (GB)
Title: Water purification
IPC: C02F1/76
Filed: 1973-07-12
Abstract: 1389530 Ion exchange water softeners STANDARD TELEPHONES & CABLES Ltd 12 July 1973 33184/73 Heading C1C [Also in Division C7] Fungal and bacterial growth in ion exchange resin water softeners is prevented by including an electrolysis cell in the water inlet, in which, when said resin is regenerated by flushing with an aqueous solution of NaCl the cell is energized so that electrolysis takes place to produce sodium hypochlorite in an antiseptic concentration.
Patent GB-1110714-A (GB)
Title: New styryl dyestuffs
Inventor: MARRABLE CHRISTOPHER DAVID
IPC: C09B23/14
Filed: 1965-08-04
Abstract: The invention comprises water-insoluble dyestuffs of the general formula <FORM:1110714/C4-C5/1> wherein A is a C1-C6 alkylene radical; Z is a C1-C4 alkyl radical or is hydrogen; R is a C1-C4 alkyl radical and the benyene ring T is substituted by a phenyl or phenoxy radical and optionally by a chlorine atom.  They are prepared by reacting the corresponding benaldehyde compound with malondinitrile preferably in presence of a solvent e.g. methanol, and a basic compound e.g. ammonia, secondary amine or an alkali metal alcoholate at temperatures between 20 DEG  C. and the boiling point of the solvent. The dyestuffs dye cellulose acetate, polyamides and polyesters by disperse dyeing processes in yellow-green shades.ALSO:Derivatives of p-aminobenzaldehydes of the general formula <FORM:1110714/C2/1> wherein A is a C1-C6 alkylene radical, Z is hydrogen or a C1-C4 alkyl radical; R is a C1-C4 alkyl radical and the benzene ring T is substituted by a phenyl or phenoxy radical and optionally by a chlorine atom are prepared by reacting a compound of general formula <FORM:1110714/C2/2> wherein A, R, T and Z are as defined above with phosphorus oxychloride in dimethyl formamide.
Patent GB-674102-A (GB)
Title: Improvements in or relating to cooling units
IPC: H01J19/36
Filed: 1949-12-30
Abstract: 674,102. Discharge apparatus. RADIO CORPORATION OF AMERICA. Dec. 30, 1949 [Dec. 30, 1948], No. 33376/49. Class 39 (i). A cooling fin for positioning in a stream of coolant round an electric discharge device comprises a plurality of elongated heat transfer members and discontinuous means at the upstream end of the body portion of the fin and transverse to the flow of the coolant for forming turbulence in the streams. An electron discharge tube 15 is surrounded by a radiator 16 comprising a core 17 and a number of radially-disposed fins 18. Each fin 18 has a body portion 19 with a mounting flange 20 and a spacer flange 21. Ribs 22, 23, 24 are formed in the member 19 by slitting and pressing out alternate strips, the ribs increasing in length outwardly in accordance with its position in a downstream direction. To prevent the formation of organ pipe tones in the cooling system, the ribs have a U-shaped tab 26 formed integral with or welded to the body portions at the upstream end. The dimensions and positions of the ribs and tabs giving maximum cooling are discussed. In one modification, the turbulence former is a bentup tongue portion in a fin in which the ribs start close to the upstream end of the fin. In another modification, a lip bent up on a diagonal line causes the turbulence.
Patent GB-1207012-A (GB)
Title: Overhead projector
IPC: G03B21/132
Filed: 1968-07-12
Abstract: 1,207,012. Lamps. CHARLES BESELER CO. 12 July, 1968 [14 July, 1967], No. 33384/68. Heading F4R. [Also in Division G2] An overhead projector for projecting a transparency 13 comprises a projection head 16 on a post 17 vertically movable by focusing means 18; and a lamp assembly 14 connected by linkage to the focusing means for moving the lamp in response to, and in the same direction as, movement of the post 17 to maintain the image of the lamp filament in a desired position relative to the head 16. The focusing means comprises a knob 18 which turns a shaft 24 carrying a pinion 23, engaging a rack 22 on the post 17. The linkage comprises a lever 19 pivoted to a bracket 52 and having a slot 55A in which rides a pin 53 when the post 17 is raised. The other end of lever 19 therefore drops and allows an arm 46, to be pulled down by a spring 48, to raise the assembly 14 through pivoted arms 40, 41. When the pin 53 reaches a slot 55B, the assembly 14 remains still while the post 17 rises and operates mechanism (Figs. 4, 5, not shown) to release a catch and slightly raise a lid 12 for access to the projector 13. The projection head 16 comprises lens housings 70, 71 which are connected by an airtight bellows 77 and are pivoted to each other and to a mirror (74, Figs. 7, 8, not shown) therein so that the mirror pivots to keep the optical system coaxial when the housing 71 is pivoted to elevate the image. Change in volume produced by moving housing 71 is compensated by providing a dust filter or bellows (78) at an opening (80) in housing 70. The lamp assembly 14 comprises a frame 35 hinged to a housing 36 and supporting a lamp 30, which plugs into a socket 37 in the housing 36 when the frame 35 is closed.
Patent GB-1482664-A (GB)
Title: Method for preparing polyetherimides
IPC: C08G65/00
Filed: 1974-07-29
Abstract: 1482664 Polyetherimides GENERAL ELECTRIC CO 29 July 1974 [28 Sept 1973] 33388/74 Heading C3R A method of making polyetherimides consisting essentially of combined units comprises reacting substantially equimolar amounts of an alkali metal salt of a dihydric phenol MOROM and a bis-imide in the presence of a "dipolar aprotic organic solvent" (defined as having a dielectric constant greater than 20) at up to 100 C. and thereafter recovering the polyetherimide. In the formulµ M is an alkali metal ion; R is a C 6-30  divalent organic radical; and R<SP>1</SP> is alkylene, C 3-20  cycloalkylene, a C 6-20  aromatic hydrocarbon radical or an alkyl, alkoxy or halo-derivative thereof, a C 1-5  alkylene-terminated polydiorganosiloxane, or where Q is -O-, -CO-, -SO 2 -, -S- or -C x H 2x -; x is 1 to 5 and m is 0 or 1. It is stated that the use of the bis-(fluorophthalimide) enables the polyetherimides to be obtained in considerably less time and to attain significantly higher intrinsic viscosities than when using a bis-(chlorophthalimide). Reference has been directed by the Comptroller to Specification 1,392,649.
Patent GB-1253580-A (GB)
Title: Improvements in or relating to yarn feeding arrangements for circular knitting machines
Inventor: BURDETT HENRY SIDNEY
IPC: D04B9/26
Filed: 1969-07-02
Abstract: 1,253,580. Knitting-machines. S T I B B E MACHINERY Ltd. 16 June, 1970 [2 July, 1969], No. 33421/69. Heading D1C. In a multi-feed cylinder and dial knitting machine having a plurality of pattern controlled side-by-side yarn guides. 27 at each feed, at least one dial needle is replaced by a yarn catch hook 32 which co-operates with the yarn guides to facilitate introduction of the yarn and is actuated in time with the yarn changing and knitting movements of the machine by an independent cam system 33 at each feed located further towards the centre of the dial than the normal dial needle cam systems. The dial needles have one or two butts acted on by cam tracks 20 or 20 and 19 respectively in dial cam cap 18. At each feed are pivoted the five yarn guides 27 of a striper unit 28 which includes a yarn trapper 31. Each guide 27 has a guide eye 28a and an actuator arm 30. Each hook 32 has a butt 32b engaging a track 36 in cam system 33 which is inside tracks 19 and 20. Hook 32 is operated to engage the yarn being inserted to ensure that it is taken by the needles, see paths (DL) and (CL) of the hook and needles, Fig. 2 (not shown). When the feeds, are placed closer together, catch hooks 32' and 32" of different lengths and having butts 32c, 32d occupy needle tricks 11a close to one another. Two cam systems are provided having tracks 49, 50 for butts 32c, 32d so that hooks 32', 32" operate at alternate feeds.
Patent GB-988980-A (GB)
Title: A chain counter
IPC: H03K23/54
Filed: 1963-08-23
Abstract: 988,980. Electronic counters. OLYMPIA WERKE A.G. Aug. 23,1963 [Oct. 1,1062], No. 33436/63. Heading G4A. To prevent misoperation due to the occurrence of spurious pulses a ring counter restarts its cycle only when an AND gate controlled by a combination of the ring stages passes a stepping pulse. As shown, only one stage 1 is set at any time, and the reception of an input pulse at 3 influences the adjacent AND gate 2 to transfer the condition to the next stage, the former stage then restoring. When all stages have reverted AND gate 4 opens to pass the next pulse to stage 1a to restart the cycle. An output is simultaneously produced at 6. The loop 2a restores 1a at the next stepping pulse.
Patent GB-624924-A (GB)
Title: Improvements in or relating to filtering apparatus for liquids
Inventor: BUFFLE JEAN PHILIBERT
Filed: 1946-11-11
Abstract: 624,924. Filtering apparatus. SERVICES INDUSTRIELS DE GENEVA. Nov. 11, 1946, No. 33480. Convention date, June 17. [Class 46] [Also in Group X] The apparatus comprises a tank in which is placed a slab of porous substance of which the upper face is flat and smooth and on which the granular filter mass lies, while its lower face comprises separate cells, the slab being supported by a watertight floor forming a closure for the cells and being traversed by waste-flow tubes opening into the cells and by tubes opening into cavities in the, lower surface of the slab, which latter tubes serve for escape of gas during cleaning of the apparatus. In a tank 1 is disposed a slab 2 of porous concrete made up of contiguous units 4, each of which defines a cell 5 on its undersurface, each cell having a regular series of circular depressions 6. The slab 2 is supported on a watertight false bottom also made up of units 8, which is, in turn, supported on ledges 11. Hollow pipes 14 extend from the upper surface of the false bottom into the lower part of a collector chamber 18, and pipes 12, packed with porous concrete 13, lead from the depressions 6 into the upper part of the chamber 18. A layer of loose material 15 is supported by the slab 2. Means for ensuring watertightness are provided between the edges 7 of the units 4 and the false bottom, and between the upper parts of the adjacent faces of the units 8; also between the outermost units 8 and the wall . 1 and ledge 11. Liquid to be filtered is distributed evenly over the sand 15 and percolates through the porous slab 2 and pipes 12 and 14, reaching the chamber 18 mostly by the pipes 14. For cleaning the bed 15, the outlet 17 is closed and unfiltered liquid is withdrawn from the bed 15. Compressed air is then supplied to the chamber 18, and rises first through the porous concrete 13 in the pipes 12 and then through the slab 2 to agitate the bed 15. Then filtrate is supplied under pressure to the chamber 18 and passes up the pipes 14 into the cells 5, through the slab 2 and into the mass 15, the air continuing to pass up the pipes 12. When the required level is reached in the region above the mass 15, the intake of air is stopped, and after a short period during which the mass 15 settles, the pipes 16 are opened and the backwash liquid siphoned off, the siphoning operation drawing more liquid through the bed. The operation is stopped when the cleansing liquid is limpid. The filter mass 15 may consist of any granular substance hard enough to resist wear due to regeneration. The particle diameter may be in the range 0.5mm. to 1.2mm., but the variation from the chosen diameter should not exceed Œ 15 per cent.
Patent GB-1242950-A (GB)
Title: Mechanical linkage
Inventor: WILKINS RALPH GODFREY
IPC: F16H21/04
Filed: 1969-07-02
Abstract: 1,242,950. Dental chairs. WESTING- HOUSE BRAKE & SIGNAL CO. 2 July, 1970 [2 July, 1969], No. 33483/69. Heading B8J. [Also in Division F2] A linkage particularly to provide vertical movement for a dental treatment support comprises a base 10 and spaced pivots 11, 12 to which a link 13 and strut 14 are respectively pivoted. An arm 15 is pivoted to the other end of the link 13 and a further arm 17 is pivoted at an intermediate point to the strut 14 the two arms being pivotally joined to a further link 18. The strut 14 is pivotally connected to an intermediate point on the arm 15. Drive means are connected between pivots 20, 22 and comprise a worm and nut drive 25, 26 driven by a motor 23 through a toothed belt 24 as shown or may comprise an hydraulic ram or manually operated mechanical means. The arrangement is such that the further link 18 moves perpendicularly to the base 10 and at a constant inclination to it. The dental treatment support may be in two pivoted parts or the linkage may be used for other applications such as camera trolleys.
Patent GB-1190304-A (GB)
Title: Three-Terminal Piezoelectric Resonator
IPC: H03H9/54
Filed: 1968-07-12
Abstract: 1,190,304. Electromechanical resonators. NIPPON TOKUSHU TOGYO K.K. 12 July, 1968 [19 July, 1967], No. 33497/68. Heading H3U. A filter element comprises a lead-zirconatetitanate ceramic disc 11 having on one face a dot electrode 12 and a concentric annular electrode 13 and on its other face a disc electrode 14. The electrode 12 is provided with a groove 12a and the electrode 13 is provided with a projection 13a, the inner end of the groove and the extremity of the projection lying to either side of the centre 11a of the disc 11. Input and output leads 15, 16 are connected, respectively, to the inner end of the groove 12a and the extremity of the projection 13a and an earth lead 17 is connected to the centre of the electrode 14. The disc 11 resonates at its fundamental frequency having its node at the centre 11a.
Patent GB-618926-A (GB)
Title: Improvements in or relating to the removal of solvents from chlorinated paraffin wax
IPC: C10G73/38
Filed: 1946-11-13
Abstract: Solvent such as carbon tetrachloride is removed from chlorinated paraffin wax by vaporizing the solvent while maintaining the wax in a molten condition and in the form of a film on a heated surface.  The process may be carried out by allowing the molten wax to flow down a flat, electrically-heated, aluminium trough, the time of contact and the thickness of the film being controlled by varying the slope of the trough.  An inert gaseous fluid, such as air, may be passed continuously over the film.  In an example, a 40 per cent solution of a 70 per cent chlorinated paraffin wax in carbon tetrachloride was fed, at a constant rate of 600 ml./hr., to an aluminium trough, 4 feet long and 1 1/2 inches wide, which was uniformly heated electrically.  By means of an energy regulator the temperature of the trough was maintained at 180 DEG  C. and the slope was so arranged that the time of contact was 5 minutes.  The wax collected at the lower end of the trough contained 2.4 per cent carbon tetrachloride.
Patent GB-833258-A (GB)
Title: Improvements in socket type screws
Inventor: ANSINGH CARL HERMAN
IPC: F16B23/00
Filed: 1956-11-05
Abstract: 833,258. Screwdrivers. ROBERTSON MFG. CO. Ltd., P. L. Nov. 5, 1956, No. 33760/56. Class 61. [Also in Group XXV] A screw-driver for a sockethead screw has a screw-engaging tip 24 with a portion 25 in the form of a pyramid of square cross-section, the sides 28 tapering towards the conical end 26. The junctures 27 between the end and the sides are arcuate. Specification 833,257 is referred to.
Patent GB-912755-A (GB)
Title: Improvements in or relating to circuit arrangements for automatic signalling systems
IPC: H04Q1/442
Filed: 1959-10-07
Abstract: 912,755. Valve and transistor amplifying circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. Oct. 7, 1959 [Oct. 10, 1958], No. 34006/59. Class 40 (6). [Also in Group XXXIX] Signalling tone is passed over the cathode or emitter circuit of a valve or transistor amplifier to a line across which a variable number of load circuits may be connected in parallel, each load being connected in series with a resistor shunter by a capacitor such that a change in the number of load circuits produces a change in D.C. over the line which equals the resulting change in amplitude of the tone signal. As shown in Fig. 1, a tone source SB drives the base of a transistor T, the emitter circuit of which is loaded by subscribers' lines B1, B2 . . ., in series with resistors S and capacitors C in circuits coupled to the lines by transformers TR. Fig. 3 shows the static characteristics L11, L21, L31 ... of emitter current against the bias and signal potential V between ground and the transistor base. Provision of series resistors S shunted by capacitors C gives a set of dynamic characteristics L12, L22, L32 . . ., which have a common intersection G on the V-axis. By making the bias V1 exceed the co-ordinate value of G by the amplitude of the tone source the required relation between A.C. and D.C. in the emitter path is achieved. The load circuits are connected up by switches K which may comprise the diode arrangement of Fig. 4 where a flip-flop FF controls diodes G1 and G2. In this arrangement a rectifier G3 provides the voltage necessary between collector and base of transistor T.
Patent GB-1148662-A (GB)
Title: Chromatographic process and apparatus therefor
Inventor: HAHN HANS HELMUT
IPC: G01N27/447
Filed: 1966-05-09
Abstract: 1,148,662. Chromatographic process using. expanding bed of particles. V. PRETORIOUS and H. H. HAHN. 9 May, 1966 [11 May, 1965], No. 34033/68. Divided out of 1,148,661. Headings B1L and B1X.  A chromatographic separation is carried out with the retarding phase present as a layer on or the surface of the particles of a bed of a particulate packing material and the bed maintained in an expanded state by the turbulent flow of the forwarding phase therethrough. The separation preferably takes place in an upright tubular column 11 which contains the expandable bed on a support 13. An outlet 23 for the forwarding phase has means for preventing the escape of expanded bed. The column may be subdivided by means 29 with a plurality of such columns connected in series by booster pump means 28. The bed may be free flowing and may be withdrawn through adjustable outlet 16 (Fig. 2) for recirculation after stripping with a medium introduced through lower inlet and withdrawn through outlet 24. The forwarding phase may be liquid or gas.
Patent GB-777025-A (GB)
Title: Improvements in or relating to commutator manufacture
IPC: H01R43/08
Filed: 1955-11-30
Abstract: 777,025. Making commutators; deforming rings; corrugating. BOSCH GES., R. Nov. 30, 1955 [Dec. 31, 1954], No. 34227/55. Classes 83 (2) and 83 (4). Commutator blanks are formed with the segments spaced widely apart and interconnected by thin bridges which are subsequently deformed to bring the segments to the required spacing for moulding on to a hub and are then removed. In one example a blank extruded with cylindrical segments 11, Fig. 3, and interconnecting bridges 12 is deformed in a conical die sleeve 20 by segments 17 which are driven into the sleeve 20. Guides 18 maintain the segments 17 in alignment. The deformed commutator is subsequently provided with anchoring hooks 21, Fig. 6, for moulding over a hub of insulating material and the bridges are removed by machining the outer surface. In another example a disc commutator is formed by embossing a disc with radial segments 31, Fig. 7, spaced by grooves 25 which are subsequently closed up by applying radial forces to produce a ring having narrow grooves 26, Fig. 10, and radial ribs 34 for subsequent removal by machining the face. Anchoring hooks 27, 28, Fig. 11, are formed on the back of the ring for moulding on to a plastic hub 30.
Patent GB-1389155-A (GB)
Title: Engine carburettor having a throttle valve positioner
IPC: F02M17/38
Filed: 1973-07-19
Abstract: 1389155 Spray carburetters FORD MOTOR CO Ltd 19 July 1973 [7 Aug 1972] 34445/73 Heading F1B A carburetter is substantially identical with Fig. 1 of Specification 1342566 but the claims are directed to positioning the throttle to a position beyond engine normal idle speed conditioning the engine for hob starting with leaner fuel/air ratio. In an alternative arrangement the invention is applied to a conventional idle system 26', Fig. 2.
Patent GB-1439023-A (GB)
Title: Flow device
Inventor: NYSTROM K S
IPC: F15C1/00
Filed: 1973-06-08
Abstract: 1439023 Fluid elements SKEGA AB 8 June 1973 [12 June 1972] 34475/75 Divided out of 1439021 Heading G4P In a flow control device comprising a rigid inlet tube and at least two outlets 4, 5, the tube is connected to a flexible portion of the body of the device so that it can be moved to positions coaxial with any of the outlets and thereby divert the fluid flow through the device. The tube is moved by delivering pressure medium to flexible chambers 13, 13<SP>1</SP>. A shoulder adjacent the mouth of the inlet tube in cavity 2 produces the Coanda effect. The device may comprise rubber or the like or wear or corrosion resistant material.
Patent GB-1379335-A (GB)
Title: Nonionic monomeric emulsion stabilizers
IPC: C09K23/00
Filed: 1973-07-19
Abstract: 1379335 Polyethers KENDALL CO 19 July 1973 34496/73 Heading C2C [Also in Division C3]  Novel nonionic monomeric emulsion stabilizers of the formula R-O-V, wherein V denotes acryloyloxyethyl, methacryloyloxyethyl, acryloyloxy - 2 - hydroxypropyl, methacryloyloxy - 2 - hydroxypropyl, allyl, methallyl, allyloxy - 2 - hydroxypropyl or methallyloxy-2-hydroxypropyl, R denotes L-O-(CH 2 CH 2 O) n -CO-Y-CO- or R<SP>1</SP>(CH 2 CH 2 O) n -CO-CH 2 -CHL<SP>1</SP>-CO-, Y denotes a C 2-3  alkylene group, a phenylene group or a phenylene group in which one or more of the hydrogen atoms is replaced by a C 1-4  alkyl group or by a halogen atom, with the proviso that the number of ring carbon atoms between the two carbonyl groups is 2, n is an integer from 9 to 50, L denotes a lipophilic radical, preferably a C 8-28  aliphatic hydrocarbon group optionally bonded through a phenylene linkage, or a group of the formula (where m is an integer of from 10 to 30), L<SP>1</SP> denotes a lipophilic aliphatic hydrocarbon group, and R<SP>1</SP> denotes methoxy, ethoxy, acetoxy, proprionoxy or hydroxyl, are prepared (1) by reacting a non-ionic surfactant  with an appropriate dicarboxylic acid anhydride to form an intermediate reaction product, and either reacting subsequently with glycidyl acrylate or methacrylate or with allyl or methallyl glycidyl ether, or by reacting subsequently with hydroxyethyl acrylate or methacrylate or with allyl or methallyl alcohol in the presence of an esterification catalyst; or (2) by reacting a suitable substituted succinic anhydride containing a lipophilic aliphatic hydrocarbon group L<SP>1</SP> either with a glycol R<SP>1</SP>-(CH 2 CH 2 O) n H followed by further reaction with glycidyl acrylate or methacrylate, or allyl ormethallyl glycidyl ether, or with allyl or methallyl alcohol, hydroxyethyl acrylate or methacrylate, or 2-hydroxypropyl acrylate or methacrylate followed by further reaction with ethylene oxide or a glycol of the formula R<SP>1</SP>-(CH 2 CH 2 O) n H.
Patent GB-1327691-A (GB)
Title: Phenyl cyclohexenylamines and the preparation thereof
IPC: C07C271/06
Filed: 1971-07-22
Abstract: 1327691 Phenylcyclohexylamines UPJOHN CO 22 July 1971 [31 Aug 1970] 34510/71 Heading C2C The invention comprises compounds of the formulµ where R is CH 3 , C 2 H 5 , F, Cl, Br, CF 3  or C 1-4  alkoxy, R<SP>1</SP> is H or C 1-4  alkyl; R<SP>2</SP> is H, C 1-4  alkyl, C 1-3  alkanoyl, C 1-3  alkylsulphonyl, C 6-10  arylsulphonyl, C 1-4  alkyl-carbamoyl, C 1-6  alkoxycarbonyl, ring-R-substituted C 7-11  aroyl, C 1-6  alkyl-, or bis-(ring-R-monosubstituted) C 6-10  aryl-C 1-6  alkyl, or R<SP>1</SP> and R<SP>2</SP> when taken together with -N< is an unsubstituted or substituted pyrrolidino, piperidino or hexamethylenimino radical, R<SP>4</SP> and R<SP>5</SP> are C 1-4  alkyl, one of the 3(4)- and 4(5) carbon linkages of the cyclohexane ring is a single bond and the other a double bond, and # is a generic expression denoting cis and trans stereoconfiguration and mixtures thereof, and their acid addition salts. The compounds may be obtained by the following processes Pharmaceutical compositions useful as central nervous system depressants and as hypotensive agents comprise compounds of the Formulµ 1, la or 1b together with a diluent in forms suitable for oral or parenteral administration.