baber/WOPTO huggingface dataset:
Patent GB-1427836-A (GB)
Title: Dynamic brake and power supply for dc-motors
IPC: H02P3/12
Filed: 1973-08-15
Abstract: 1427836 Control of D.C. motors KOLLMORGEN CORP 15 Aug 1973 [31 Jan 1973] 39549/73 Heading H2J A D.C. motor is driven in one or other direction by firing one or other of pairs of silicon controlled rectifiers 5, 7; 6, 8 whose gates are connected to a firing control network (not shown) and also to the firing control network shown in Fig. 3, the arrangement being such that the SCR pair not being used to supply the motor is used to brake the motor when the latter is de-energized, the motor back EMF being applied to a closed circuit including a smoothing inductance 11 or 12, the appropriate pair of SCR's and the secondary winding of power supply transformer 1. Thus no additional circuit components are required to brake the motor. In a typical drive and braking cycle, energization of the transformer 1 produces a voltage at terminal 14 of Fig. 3, so that transistors 19, 20 are switched on by a charged capacitor 18 to prevent operation of an oscillating circuit 21-24. Hence no firing signal for the SCR's 5-8 is produced at terminal B, although the other firing control network (not shown) produces signals to fire the appropriate pair of SCR's to drive the motor in the desired direction. De-energization of the transformer 1 causes transistors 19,20 to switch off, whereupon the oscillating circuit 21-24 produces firing pulses at terminal B to fire all the SCR's and allow the pair having the appropriate polarity to establish the closed circuit for the motor back EMF and so brake it. Application of the invention to a half-wave rectifier system and/or a polyphase supply is envisaged.
Patent GB-975939-A (GB)
Title: Process for the manufacture of photographic colour images and colour correction
IPC: G03C7/34
Filed: 1960-11-18
Abstract: N - (31 - Carboxy - 41 - cetylsulphonylphenyl) -1-hydroxy-2-naphthamide is prepared by reacting 2-chloro-5-nitrobenzoic acid with cetyl mercaptan in the presence of potassium hydroxide, dissolving the 2-cetylmercapto-compound formed in acetic acid and oxidizing it with hydrogen peroxide to give 2-cetylsulphonyl - 5 - nitrobenzoic acid, reducing this to the corresponding amine with catalytic hydrogen, and condensing the amine with phenyl 1-hydroxy-2-naphthoate and distilling off the phenol formed.  Specifications 831,731, 880,862, 906,908, 939,030 and 975,930 are referred to.
Patent GB-1443234-A (GB)
Title: Method of treating a gas containing one or more nitrogen oxides
IPC: B01J23/00
Filed: 1973-08-22
Abstract: 1443234 Treating exhaust gases HITACHI Ltd 22 Aug 1973 [25 Aug 1972] 39884/73 Heading C1A [Also in Division B1] Nitrogen oxides in exhaust gases, e.g. from I.C. engines or boilers, are reduced by contact with a oxidic composition having a K 2 MgF 4 - type crystal structure and the formula wherein A= at least one of the lanthanides of At. No. 59-71, yttrium or alkaline earth metals; B is at least one of Li, Al, Ti, V, Cr, Mn, Fe, Co, Ni, Zn, Ga, Zr, Sn, Mo and W; x is from 0 to 2; y is from 0 to less than 1; and 8 is from -0À5 to +0À5. The reaction may be carried out at 200- 1000 C. The examples describe the treatment of gas mixtures containing NO, CO, O 2  and N 2 ; NO, CO, O 2 , NU 3  and N 2 ; NO, CO 2 , O 2 , NU 3 , SO 2  snd N 2 ; and NO and N 2 .
Patent GB-1406203-A (GB)
Title: Grinding disc
IPC: B24D5/04
Filed: 1973-08-24
Abstract: 1406203 Abrasive wheels TYROLITSCHLEIFMITTELWERKE SWAROVSKI KG 24 Aug 1973 40235/73 Heading B3D A grinding disc comprises a region of increased strength adjoining the hole 6 of the disc, the region having zones of different strength material overlapping one another, at least one zone having the strength and composition of the grinding layer, and at least one zone 3 having the same type of bond as the grinding layer 2 but a different filler, the radius of the region being up to <SP>2</SP>/ 3  of the radius of the disc. A single zone 3 may be disposed centrally or to one side of the disc or two or more zones 3 may be spaced apart through the disc. The peripheries of the zones may have cut-outs 5 so as to key with the layer 2. The zones 3 may also be joined to a hub-like coating within the bore. The zones of increased strength are of ceramically bound fine grain, and have a different coefficient of expansion to that of the layer, and may be prestressed.
Patent GB-861913-A (GB)
Title: Transistor counter
Inventor: KUTSCHBACH ROLF
IPC: H03K23/00
Filed: 1957-12-30
Abstract: 861,913. Electronic counting-apparatus. ELEKTRONISCHE RECHENMASCHINEN, WISSENSCHAFTLICHER INDUSTRIEBETRIEB VEB. Dec. 30, 1957, No. 40276/57. Class 106 (1). In an electronic decimal counter comprising four series-connected, binary, transistor flip-flop stages, a potential fed back from a later stage converts the stage to which it is applied from a bi-stable to a monostable stage. As shown, four pairs cf transistors T5 ... T12 are connected to operate as a decimal order in accordance with the table, Fig. 2, in which columns 15 ... 22 correspond to transistors T5 . . .T12 respectively; O= "cut-off," and L=" conducting." The second negative input pulse sets the stages as in row II, but a potential applied from the collector of transistor T11 to the base of transistor T8 renders the second stage unstable and it flips back, causing changeover of both succeeding stages. Counting continues in conventional fashion until at the tenth pulse, the third stage is rendered unstable by a potential from transistor T12 to transistor T9 and flips back. Thus all the transistors are returned to their initial conditions.
Patent GB-1116744-A (GB)
Title: Improvements in or relating to electromechanical selection systems for the needles of knitting machines
IPC: D04B15/78
Filed: 1965-09-22
Abstract: 1,116,744. Knitting-machines. EDOUARD DUBIED ET SIE, SOC. ANON. 22 Sept., 1965 [22 Oct., 1964], No. 40367/65. Heading D1C. In a circular machine an electromechanical needle selection system comprises two superposed electro-magnets 5, 6, having flat pole surfaces, and needle jacks 4 selectively pivotable about either of two "floats" 9, 10 held against one of said energised magnets, into an operative or inoperative position. Each jack is pivoted about a ramp face 23, and maintained in position by cams engaging the projecting ends 16, 17 of the jacks. The end surfaces 13, 15 of operative jacks are pivoted into the range of a lifting cam (14, Fig. 4, not shown) and of the needles respectively. Inoperative jacks are pivoted clear of the lifting cam.
Patent GB-1537047-A (GB)
Title: Eye ointment
IPC: A61K9/00
Filed: 1975-10-03
Abstract: 1537047 Eye ointment FISONS Ltd 17 Sept 1976 [3 Oct 1975 21 Oct 1975] 40507/75 and 43049/75 Heading A5B A sterile ointment, suitable for use in the eye, comprises, as active ingredient, 1, 3-bis (2-carboxychromon-5-yloxy) propan-2-ol, 1, 3- bis (2-carboxychromon-7-yloxy) propan-2-ol, or a pharmaceutically acceptable salt thereof, in a base comprising a wax, a fat, a protein, a paraffin or a polyalkylene glycol, or mixtures thereof. The salt may be the disodium salt. The base may comprise hard or soft paraffin waxes, wool fat, glycerol, gelatin, liquid paraffin or polyethylene glycol. The ointment may also contain a preservative or sterilising agent, and water. The ointment may be used to treat conditions of the eye in which allergy or immune reactions play at least a contributory part.
Patent GB-1324860-A (GB)
Title: Control system for hydraulic motor
IPC: F15B11/17
Filed: 1970-08-24
Abstract: 1324860 Hydraulic pressure system CATERPILLAR TRACTOR CO 24 Aug 1970 [29 Sept 1969] 40668/70 Heading F1P A pair of pumps 11, 12, e.g. on articulated earth moving equipment, for selectively driving a remote motor M at one of two speeds, each has its output 23, 31 connected via an orifice 63, 73 in a movable member 61, 71 of a pilot valve 14, and a pilot flow passage 19, 21, to an annular chamber 51, 52 in a main control valve 16 which has a spool 41 movable to connect one, 51, both, or neither chambers 51, 52 to a drain line 22. Each movable member 61, 71, when its pilot flow passage 19, 21 is'connected to drain line 22, moves upwardly to connect the associated pump outlet 23, 31 to a drain passage 27 via orifices 64, 76. When its pilot flow passage 19, 21 is closed, the movable member 61, 71 moves downwardly as shown, and the output of the associated pump 11, 12 is directed via line 33 to the motor M which has a single supply line and drain line. A by-pass 38 prevents cavitation in the motor during over-run, and the valve 14 has a pressurerelief valve 81. Additional pressure fluid may be supplied to the motor via a line 32.
Patent GB-1479641-A (GB)
Title: Superconductive ac dynamoelectric machines having two rotors
IPC: H02K55/00
Filed: 1974-09-18
Abstract: 1479641 Dynamo-electric machines WESTINGHOUSE ELECTRIC CORP 18 Sept 1974 [24 Sept 1973] 40722/74 Heading H2A An A.C. dynamo-electric machine comprises a stator 13 and two rotors 17, 35, rotor 17 being connected to a drive shaft 19 and carrying a winding 29 operating at ambient temperature and rotor 35 carrying a superconducting winding 39 and being disposed between the stator and rotor 17. The machine shown is a motor. A.C. is fed to stator winding 15 and interacts with a conductive coating on the outer surface of rotor 35 to bring this rotor quickly to near synchronous speed, there being no load on shaft 31. D.C. is then fed to superconducting winding 39 and the field interacts with squirrel cage winding 29 to drive output shaft 19. This construction is said to reduce A.C. losses in the superconducting winding.
Patent GB-1240683-A (GB)
Title: Films and foils and process for their production
Inventor: WEBER KARL ARNOLD
IPC: B29C70/50
Filed: 1968-08-26
Abstract: 1,240,683. Coated products. FARBENFABRIKEN BAYER A.G. 26 Aug., 1968 [26 Aug., 1967], No. 40730/68. Heading B2E. Films and foils may be obtained from high molecular weight compounds by applying a high molecular weight compound or components from which it may be produced to a smooth or grained, or flocked support, which may if desired be removable, embedding short flock fibres in this layer by electrostatic and/or mechanical means, applying a further layer of the high molecular weight compound, applying unstretched synthetic fibres by mechanical means calendering the product, repeating this process if desired, and finally applying a covering layer of a high molecular weight compound which may or may not be the same as the previously used high molecular weight compound. The high molecular weight compounds may be polyurethanes, polyimides, polyamides, polyesters, methylacrylate or methylacrylate polymers, polyvinyl and polyvinylidene compounds or polyolefines such as polyethylene or polypropylene. Examples of suitable compounds are given. Flock fibres which may be used may be of natural or synthetic fibres such as wool, cotton, rayon, polyesters, polyamides, polyurethanes or polyacrylonitrile. The unstretched synthetic fibres may be obtained from polyurethane, polyamides, polyesters or from polyacrylonitrile. The fibres may have staple length of 1-60 mm. and may be scattered by mechanical means or applied to the surface in the form of a fleece.
Patent GB-1448816-A (GB)
Title: Vehicle coupling
IPC: B60D1/00
Filed: 1972-09-02
Abstract: 1448816 Tractor/trailer couplings W H DAVIS & SONS Ltd 7 Nov 1973 [2 Sept 1972] 40808/72 Heading B7T In a vehicle coupling wherein a tongue 11 (preferably part of a swan neck carried by a tractor vehicle) engages in a socket 12 (in a load-carrying trailer vehicle), a tongue locating assembly associated with the socket 12 comprises a pair of tongue engaging elements (rollers 18) movable in a lateral direction (along guideways 19) transverse to the direction of insertion of the tongue 11 relative to the socket 12, and a tongue engaging member 23 responsive to relative tongue/socket movement in a direction transverse both to the direction of insertion and to the lateral direction (that is vertical movement of the tongue 11 from its dotted position 11a in Fig. 1 to the full line position) for displacing the elements 18 towards one another so that they engage lateral sides of the tongue 11 to laterally centralize and retain the tongue relative to the socket 12. The vertically guided member 23 is a weighted block which is gravity biased downwards and is connected to the horizontally guided rollers 18 by respective links 21.
Patent GB-974788-A (GB)
Title: Apparatus for opening and closing the door of an engine-driven vehicle
IPC: E05F15/04
Filed: 1960-11-30
Abstract: 974,788. Valves. IKEGAMI KOGYO KABUSHIKI KAISHA. Nov. 30, 1960 [Feb. 12, 1960], No. 41195/60. Heading F2V. [Also in Division E2] A valve 23 for controlling a piston and cylinder device mounted in a vehicle door and adapted to open and close the door by the suction from the intake manifold of the vehicle engine (see Division E2) comprises a valve member 36 formed with a recess 46 and urged towards a central position by a spring 42, and two push buttons 47, 48 adapted to be depressed to tilt the valve member to the right or left and place the pipe 24 leading to the intake manifold in communication with one of the pipes 25, 26 leading to the two ends of the cylinder, the other pipe being opened to the atmosphere through a hole 49. In the central position of the valve member both of the pipes 25, 26 are open to the atmosphere.
Patent GB-975357-A (GB)
Title: 1 substituted isatin-ª‰-thiosemicarbazones,their preparation and pharmaceutical preparations containing them
Inventor: BAUER DENIS JOHN
IPC: C07D209/40
Filed: 1959-12-04
Abstract: The invention comprises 1-substituted isatin b -thiosemicarbazones of the formula <FORM:0975357/C1/1> with the exception of 1-methylisatin, b -thiosemicarbazone, wherein R1 is an acetyl group or an alkyl, alkenyl or alkynyl group of not more than 5 carbon atoms which may carry one or more substituents each of which is a halogen atom or a hydroxy group which may be esterified with an aliphatic carboxylic acid radical containing a total of not more than 5 carbon atoms, R2 is a hydrogen or a halogen atom or a methyl or ethyl group, or R1 and R2 form a trimethylene chain, and R3 and R4 are hydrogen or fluorine atoms, at least 2 of R2, R3 and R4 being hydrogen atoms, and the preparation thereof and of the extruded compound by converting an appropriately substituted isatin into its thiosemicarbazone by known methods of thiosemicarbazone formation.  1-Ethyl-, 1-butyl-, 1-pentyl-, 1-isopropyl-, 1-prop -21- ynyl-, and 1-allyl-isatin are prepared from sodioisatin and the appropriate alkyl, alkenyl or alkynyl halide.  1-(21-Hydroxyethyl)-isatin is prepared from sodioisatin and 2-chloroethanol.  1-Acetoxymethyl- and 1-(21-acetoxyethyl)-isatin are prepared from acetyl chloride and the corresponding 1-hydroxyalkylisatin.  1-(21-Bromoethyl)-isatin is prepared from 1,2-dibromoethane and sodioisatin.  5-Fluro -1- methyl- and 5-fluoro -1- ethyl)-isatin are prepared from 5-fluoro -1- sodioisatin and methyl and ethyl iodide.ALSO:Pharmaceutical preparations comprise a compound of the general formula <FORM:0975357/A5-A6/1> wherein R1 is an acetyl group or is an alkyl, alkenyl or alkynyl group having not more than 5 carbon atoms which may carry one or more substituents, each of which is a halogen atom or a hydroxy group which may be esterified with an aliphatic carboxylic acid radical having a total of not more than 5 carbon atoms, R2 is a hydrogen or a halogen atom or a methyl or an ethyl group or R1 and R2 form a trimethylene chain, and R3 and R4 are hydrogen or fluorine atoms, at least two of R2, R3 and R4 being hydrogen atoms, and an acceptable carrier therefor, other than simple solutions of 1-methylizatin b -thiosemicarbazone in water, acetone, methanol, ethanol, acetic acid, aqueous ethanol or aqueous ethanolic caustic soda solutions and suspensions of the compound in those liquids of the above list which might be suitable pharmaceutical vehicles, unless other pharmaceutical ingredients or carriers are also included.  The compositions may be formulated as tablets, capsules, cachets, ampoules, suppositories, powders, granules, solutions, suspensions, emulsions or ointments.  The compositions are active against vaccinia virus and human smallpox.
Patent GB-1131251-A (GB)
Title: Alkali metal salts of carboxymethyl cellulose
Inventor: EVANS RICHARD LAIGHTON
IPC: C08B11/20
Filed: 1965-09-29
Abstract: 1,131,251. Carboxymethyl cellulose. E. I. DU PONT DE NEMOURS & CO. 29 Sept., 1965, No. 41392/65. Heading C3A. An alkali metal salt of carboxymethyl cellulose (CMC) is made by etherifying alkali cellulose in a 2-phase liquid system containing a water miscible aliphatic alcohol, e.g. ethanol, one phase containing aqueous alcohol and the other containing an inert water-immiscible liquid (e.g. benzene)/alcohol mixture, treating the resulting CMC with a bleaching agent to reduce its viscosity, and recovering the alkali metal CMC salt product. Etherification may be effected using wood pulp made alkali with NaOH, and treated with monochloracetic acid. Bleaching agents listed are hydrogen peroxide and the free acid or alkali metal salt forms of peroxides, perborates, periodates, hypohalites or chlorites and they may be used singly or in admixture. Chlorites may be prepared in situ by passing gaseous Cl 2  through the alkaline etherified slurry.
Patent GB-1313568-A (GB)
Title: Hard crystal tools
IPC: B23B27/20
Filed: 1970-08-28
Abstract: 1313568 Diamond tools INDUSTRIEDIAMANTEN GmbH 28 Aug 1970 [28 Aug 1969] 41489/70 Heading B5E A holder for hard crystals, such as diamonds used for machining, comprises a chamfered front face 3 and is adapted to hold a setting 5 for a crystal such that the crystal projects from the holder with its face 12 inclined to its longitudinal axis by a predetermined angle. The holder is formed with a cylindrical part 1 provided with three slots 9 and can be expanded by a screw 2 so as to be fixable in a lathe. The front face 3 of the holder is chamfered and the setting can be secured in a bore 7 in the holder by a screw 8. The crystal 6 is secured by sintered metal 10 in the setting and has a cutting face 12 and its axis is at an angle to the axis of the holder. To vary the angle, different holders may be provided having the bores 7 at differing angles to the parts 1.
Patent GB-1048791-A (GB)
Title: Rear-axle suspension system
IPC: B60G13/00
Filed: 1964-10-12
Abstract: 1,048,791. Motor vehicle rear axle suspensions. SIMCA AUTOMOBILES. Oct. 12, 1964 [Oct. 28, 1963], No. 41558/64. Heading B7D. In a suspension for a motor vehicle rear axle which includes a differential housing 2 and axle housings 3, 3a enclosing drive shafts for the rear wheels 24, shock absorbers 17, 17a are connected to arms 5, 5a rigid with the axle housing at points located in front of the axle so as to damp rotational movement of the axle under driving torque reaction. The shock absorber 17, 17a are connected by ball-joints 18, 18a to the vehicle frame and by ball-joints 19a to members 20, 20a extending forwardly from the arms 5, 5a. Upper and lower links 10, 11 extend between pivots 12, 12a, 14, 14a on the frame and pivots 6, 6a, 8, 8a on arms 4, 4a projecting upwardly from the axle and on the arms 5, 5a or additional downwardly projecting arms. Apertures 21, 21a are provided in the lower links 11 for the shock absorbers 17, 17a, and coil springs 22, 22a coaxial with the shock absorbers abut the lower links 11 and the vehicle frame. A panhard rod 16 may be provided.
Patent GB-1132691-A (GB)
Title: Improvements in or relating to the production of cutting edges
Inventor: MARTIN COLIN EDWARD
IPC: B23H9/08
Filed: 1964-10-13
Abstract: 1,132,691. Razor blades. WILKINSON SWORD Ltd. 7 Dec., 1965 [13 Oct., 1964], No. 41662/64. Heading B4B. [Also in Division C7] In making razor blades, e.g. of stainless steel, the cutting edges are formed, at least partly, by an electrolytic metal removal process (see Division C7). An edge may be partly formed abrasively and finished electrolytically. The electrolytic processing may be with the blades as a stack or in strip form.
Patent GB-1232879-A (GB)
IPC: B26B19/04
Filed: 1968-09-03
Abstract: 1,232,879. Dry shavers. GILLETTE CO. 3 Sept., 1968 [18 Sept., 1967], No. 41840/68. Addition to 1,189,717. Heading B4B. The shearing head of the parent Specification is modified in that the cutting teeth 2 thereof have recesses 24, Fig. 4. As described, the clearance between the ends of the teeth 2 and the inside of the outer cutting foil a, Fig. 3, is less than 0À3 mm, preferably less than 0À1 mm. and the cutting edges 23, Fig. 4, of the teeth form an angle of more than 5 degrees, preferably 20 degrees, with the cutting edges of the slots with which they cooperate in use.
Patent GB-1164833-A (GB)
Title: Improvements in or relating to Valves
Inventor: ALDERTON HOWARD KENNETH
IPC: F16K3/26
Filed: 1966-09-20
Abstract: 1,164,833. Valves. CAM GEARS (LUTON) Ltd. 14 Sept., 1967 [20 Sept., 1966], No. 41969/66. Heading F2V. In the core 5 of a spool valve housing 4, there is disposed a multi-landed spool 1 one end of which is connected via a link 24 to an actuator unit and the other end of which is acted upon by a spring arrangement 15. The spring arrangement comprises an externally screw threaded sleeve 16, having intermediate its ends an inwardly projecting flange 17, and two springs 20, 21, the first extending between a shoulder 10 on the spool and one side of the flange 17 and the second between the other side of the flange and an abutment unit 13 screw threaded on to an extension 12 of the spool. In operation the springs progressively resist displacement of the spool in either direction, and the spring arrangement permits adjustment of the spool relative to the housing to alter the position about which displacement of the spool tubes place without disturbing the preload of the springs, this being so as the spring arrangement undergoes the same axial adjustment as the spool. In an alternative embodiment (Fig. 2, not shown), the abutment unit 13 is modified to provide an arrangement whereby both the position of the spool relative to its housing and the preload on the springs can be altered.
Patent GB-1322134-A (GB)
Title: Laying of pipelines
Inventor: VAN ZUTPHEN A
IPC: E02F5/10
Filed: 1971-09-09
Abstract: 1322134 Laying pipes INDUSTRIEELE HANDELSCOMBINATIE HOLLAND NV 9 Sept 1971 [14 Sept 1970] 42139/71 Heading F2P In laying a pipe-line, the pipe-line or excavating nozzles associated therewith is/are provided with clinometers. The measurements of the clinometers relative to some datum are fed back to a remote location and the information used to determine the bend in the pipe to prevent undue strains thereon. The information can be used to control excavating nozzles straddling the pipe so as to determine the depth and curvature at which a pipe is being buried. A series of spraying devices 3 each carrying a clinometer 6 and joined together can be pulled along the pipe-line in a laying operation.