baber/WOPTO huggingface dataset:
Patent GB-1503174-A (GB)
Title: Electromedical apparatus
IPC: A61B5/0402
Filed: 1975-06-26
Abstract: 1503174 Heart defibrillation MEDTRONIC INC 26 June 1975 [10 July 1974] 27115/75 Heading A5R In an implantable apparatus for preventing heart fibrillation a plurality of heart stimulation electrodes are connected spaced apart to the heart. If the heart becomes unequally depolarised, that is, a pulse from an electrode occurs outside a predetermined period associated with the QRS pulse, as is the case at the onset of fibrillation, a circuit associated with the electrodes will sense this. The associated circuit causes a pulse to be simultaneously applied to the heart at several locations in order to shock the heart back into synchronous action. The electrodes 10-14 supply an "astable multivibrator-type" timing circuit 26 also Fig. 2 not shewn via amplifiers 20-24 and an OR gate 25. The timing circuit 26 provides an asymmetrical square pulse comprising a 840 mille second "off" or high portion and a 160 mille second "on" or low portion. If any further pulses occur (after the initial QRS pulse) in the "on" portion of the square wave an output pulse circuit 27 is not activated, but if a pulse occurs in the "low portion" then the output pulse circuit 27 is activated causing a pulse to pass via amplifiers 50-54 to the electrodes 10-14. This causes the heart to be repolarised and prevent the fibrillation increasing. A further embodiment is described (Fig. 3 not shewn) whereby the heart's electrical activity sensing electrodes are separate from electrodes which apply the "shock pulse".
Patent GB-1202509-A (GB)
Title: Production of terephthalic acid diesters
IPC: C07C69/82
Filed: 1969-05-29
Abstract: 1,202,509. Terephthalic acid diesters. CELANESE CORP. 29 May, 1969 [3 June, 1968], No. 27271/69. Heading C2C. The invention relates to the manufacture of bis - (2 - hydroxyalkyl) terephthalates by a method wherein terephthalic acid is suspended in a reaction medium comprising an alkylbenzene or an inert halohydrocarbon and is treated at 110-200 C. with an alkylene oxide of 2-6 carbon atoms in the presence of a catalyst, whereafter the product is separated into a liquid portion containing the bis - (2 - hydroxyalkyl) terephthalate and a solid portion, still wet with liquid portion, which is mixed with fresh reaction medium to form a slurry which is pumped back to the reaction zone. The passage of the mixture back to the reaction zone may clog the pipe through which the mixture is conveyed but, according to the invention, this difficulty is overcome by avoiding the maintenance of a temperature between 80 and 105 C., during the separation, mixing and pumping operations. This may be effected by applying sufficient heat to the fresh reaction medium or by cooling the mixture to below 80 C. so rapidly that clogging does not occur. A number of suitable reaction media are specified, as also are a number of catalysts. An example is given of the manufacture of bis - (2 - hydroxyethyl) terephthalate. Apparatus is described.
Patent GB-857784-A (GB)
Title: Improvements in or relating to continuously variable mechanical transmissions
Inventor: BAINES FREDERICK
IPC: F16H61/662
Filed: 1956-09-06
Abstract: 857,784. Change-speed control. PLESSEY CO. Ltd. Sept. 6, 1957 [Sept. 6, 1956], No. 27340/56. 80 (2). A continuously variable ratio mechanical gear b, such as expanding pulley gearing used in a motor car, has its ratio adjusted by a hydraulic control system admitting fluid under pressure through a valve system d incorporating selectively opened individual flow passages allowing flow at different rates to a piston-type servomotor a. Upshifts and downshifts are thereby effected quickly or slowly, as desired. In the ratio maintained position shown, fluid under pressure is supplied from a pump (not shown) through a pipe c to a pipe m leading to a space l in a flow control valve g, and to a pressure-maintaining valve e. Fluid passing the pressure-maintaining valve e enters a pipe f through which it is returned to the pump, and the fluid in the valve space l, leaks slowly through a restricted passage o to passages n, r whence it, too, passes to the return pipe f. To produce a gradual upshift in the ratio of the gearing b, a cam k is turned slightly anticlockwise by hand so that it depresses a plunger h against spring bias and thereby moves a piston valve q downwards to close the passage r. The fluid entering the passage n through the restricted passage o is then unable to escape to the return pipe f, and instead passes through a hole s to a one-way valve v spring biased to its closed position. When sufficient pressure has been built up to open the one-way valve v, fluid passes through a pipe w to the servomotor a, and the upward shift is effected, the rate at which this shift takes place being limited by the rate of flow of the fluid through the restricted passage o. If a quick upshift in ratio is desired, the cam k is turned further anticlockwise so that the piston valve q, while still closing the passage r, is further depressed to open a large passage p, around its stem, by-passing the restricted passage o. A quick flow of fluid to the servomotor a is thus obtained. On returning the cam k to the position shown, the oneway valve v is closed by its spring so that the fluid supplied to the servomotor cannot escape and the ratio is maintained in the gear b. To effect a gradual downshift in ratio, the cam k is turned slightly clockwise to depress a plunger j which opens a valve x against spring bias so that the fluid under pressure in the pipe w &c. can escape slowly through a restricted passage y to the passages s, n, r and the return pipe f. For a quick downshift in ratio, the cam k is turned further in the clockwise direction and the oneway valve v is opened to provide a relatively free flow path, by-passing the restricted passage y, to the passages s &c.
Patent GB-1387029-A (GB)
Title: Printing machine
IPC: B41L11/02
Filed: 1972-06-12
Abstract: 1387029 Duplicating apparatus L F FRITTELLI 1 June 1973 [12 June 1972] 27359/72 Heading B6C A spirit duplicating machine includes a spring-mounted sliding carriage 18 bearing a wetting roller 22 and a resiliently-mounted frame 46 bearing an impression roller 45. A copy sheet is placed on base plate 12 and a master card is placed on inclined plate 20. Rearward and downward movement of handle 49 causes the wetting roller 22 to pass over the copy sheet and the impression roller 45 to pass over the master card and copy sheet, so that the wet copy sheet receives an imprint. Preferably the wetting roller 22 is fed with methyl alcohol from a fixed reservoir 30 by means of a two-part neck, one part of which is mounted on the carriage 18 and one part of which dips into the methyl alcohol. The two parts are biased into contact by a spring 36, and a second spring 43 forces the moving part of the wick against the wetting roller.
Patent GB-761140-A (GB)
Title: Apparatus for use in testing the alignment of vehicle headlamps
Inventor: JEHU VICTOR JAMES
IPC: G01M11/06
Filed: 1953-10-06
Abstract: 761,140. Optical testing apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Jan. 6, 1955 [Oct. 6, 1953], No. 27470/53. Class 97(1) A parallelogram linkage 11, 14, 15, used to adjust the optical axis of head-light testing equipment, comprising a projector lens and a screen, so that it is parallel to the longitudinal axis of a motor vehicle, is characterized in that one link 11 is adapted to contact a pair of vehicle wheels 10 and is raised off the ground, and in that the opposite link 14 serves as a stop against which the appropriate part of the equipment is abutted. Preferably, link 11 which may be an aluminium tube, is releasably secured to pedestals 12 and links 15 are connected to pedestals 12 and link 14 by pegs in holes 16. The height of link 11 above the ground may be adjustable.
Patent GB-929398-A (GB)
Title: Process for dyeing and printing cellulose or protein fibres
IPC: D06P1/30
Filed: 1960-08-08
Abstract: Dyeings or prints of good wet-fastness properties are produced on cellulose and/or protein fibres by applying a water-soluble dyestuff, other than a sulphur dyestuff, which contains at least one thiosulphuric acid group, also applying, before, during or after dyeing or printing, elementary sulphur or a compound containing a thiocarbonyl or mercapto group, and finally heating or steaming. Dyestuffs of the azo, anthraquinone, vat, acridone, phenazine, dioxazine, diphenyl-methane, triphenyl-methane, nitro or phthalocyanine series may be employed and they may contain further solubilizing groups, such as sulphonic or carboxylic acid groups. Specified compounds containing thiocarbonyl or mercapto groups are thioacetamide, alkali metal alkyl-xanthogenates, thiourea, N-alkyl- or N:N1-dialkyl thioureas, 2-mercaptobenzothiazole or a metal salt thereof, dithiocarbamic acid derivatives, such as N-cycloalkyl-alkyl-ammonium dithiocarbamates, and thiuram compounds, such as dialkyl-diphenyl-thiuram-disulphides.  Elementary sulphur is applied in the finely-ground or colloidal condition.  The sulphur or thiocarbonyl or mercapto compounds are preferably applied in the presence of a substance which has an alkaline reaction or yields hydroxyl ions in aqueous solution, such as sodium hydroxide, sodium bicarbonate or sodium trichloroacetate. Examples are given. Specification 927,774 is referred to.
Patent GB-1034656-A (GB)
Title: Improvements relating to divans
Inventor: BASNETT JOHN COOPER
IPC: A47C17/14
Filed: 1962-07-18
Abstract: 1,034,656. Bed-settees. DUNLOP RUBBER CO. Ltd. June 25, 1963 [July 18, 1962], No. 27525/62. Heading A4J. A divan of the kind which comprises a mattress 13 supported on a mattress base 12 provided with legs and is convertible into a settee, has a pivotally-mounted backrest 11 whose pivotal axis 14 is disposed longitudinally with respect to the base 13 and at a level corresponding with the upper surface of the mattress 13, the backrest 11 being carried at a distance from the pivotal axis 14 sufficient to allow it to be swung underneath the mattress base when the divan is not in use as a settee. The back-rest 11 is provided with a pair of struts 15 which turn about the axis 14 on pivots mounted in the inner face of assemblies 16, Fig. 1 (not shown), which comprise both legs and end-boards.
Patent GB-731809-A (GB)
Title: Improvements relating to electric motor control systems of the ward leonard type
Inventor: WELLS NORMAN SIMPSON
IPC: H02P7/34
Filed: 1951-11-23
Abstract: 731,809. Automatic current control systems. ENGLISH ELECTRIC CO., Ltd. Feb. 23, 1953 [Nov. 23,1951], No. 27637/51. Class 38 (4). [Also in Group XXXVH] The current passing between the generator and motor of a Ward-Leonard set, in which the motor may be regeneratively braked, is limited by controlling the excitation of the generator in accordance with the output of a pair of selfsaturating magnetic amplifiers. The amplifiers 6, 16. are connected via oppositely poled rectifiers 7, 17 across a shunt 3 which may be the commutating pole winding of either the generator 1 or the motor 2 of the Ward- Leonard set. The control winding of amplifier 6 is energized under normal motoring conditions ; that of amplifier 17 when the motor 2 is acting as a generator for regenerative braking. The amplifiers control windings 4, 14 of a further self-saturating magnetic amplifier 9 which controls the energization of the field 1a of the generator 1. A further field winding 1b opposes and annuls the field set up by winding 1a due to the standing value of output current of amplifier 9. The amplifiers 6, 17 are so biased that they normally operate below the first knee of their characteristic and if the current in their control windings exceeds a predetermined maximum they saturate heavily and by reducing or increasing respectively the excitation of the machine 1 limit the current flowing under generating or braking conditions. In a modification, rectifiers 7, 17 are omitted. Specification 630,124 is referred to.
Patent GB-859812-A (GB)
Title: Plasticised synthetic elastomers
Inventor: COOPER WILFRID
IPC: C08L57/04
Filed: 1956-09-08
Abstract: A synthetic elastomer composition comprises a reaction product of a polymer containing terminal hydroxy groups and a polyisocyanate or polyisothiocyanate plasticized with a liquid copolymer of a diolefine and an unsaturated ketone.  The amount of liquid copolymer is usually 5 to 20% of the weight of the reaction product.  The liquid copolymer is preferably prepared from a monomer mixture containing 20% to 60% by weight of the ketone. This may have the general formula R1.CR2=CR3CO.R4 where R1, R2 and R3 each represent a hydrogen atom or a methyl group and R4 represents an alkyl group containing 1 to 4 carbon atoms. Preferred olefines are the conjugated diolefines especially butadienes or substituted butadienes.  The reaction products can be prepared from polyesters, polyethers, polyamides or polyesteramides and polyisocyanates or isothiocyanates (p-phenylene, naphthalene and toluene diisocyanates are preferred) and can be cross-linked with a glycol, a polyhydroxy compound such as trimethylol propane, a diglycol such as diethylene glycol, or tetra-(2-hydroxy propyl) ethylene diamine. In an example a plasticizer is prepared by reacting butadiene and methyl isopropenyl ketone in an emulsion containing sodium oleate, sodium hydroxide, potassium persulphate and tertiary dodecyl mercaptan as modifier. Methyl vinyl ketone, ethyl isopropenyl ketone, methyl isobutenyl ketone or ethyl vinyl ketone may replace the methyl isopropenyl ketone in the preparation of other plasticizers.  Two polyesterpolyisocyanate reaction products are prepared from polyethylene glycol adipate, p-phenylene diisocyanate and 1 : 4-butylene glycol and trimethylol propane, respectively, as cross-linking agents.  Mixtures of the reaction products, together with one of the plasticizers and toluene diisocyanate dimer are milled together and the mixtures are cured in a mould by heating under pressure.  In comparison experiments a butadieneacrylonitrile polymer is used as plasticizer.
Patent GB-387631-A (GB)
Title: Improvements in or relating to apparatus for evaporating solutions and particularly for obtaining salt
IPC: B01D1/12
Filed: 1932-10-04
Abstract: <PICT:0387631/III/1> In evaporators for obtaining salts from their solutions in which the solution is circulated through a bank of heating tubes 2 by a propeller 3, the heater tube bank 2 is located centrally in an evaporator 1 the upper part of which is wider than the lower and the outlet of the guide cylinder 4 containing the propeller 3 is of the same diameter as the bank 2.  The diameter of the guide member 4 is gradually constricted as it approaches the propeller 3 carried on a shaft 5 supported by guide members 6 and protected from salt deposits by a tube surrounding the propeller shaft. Connections 10, 11 provided for the admission of steam and removal of condensate and air also serve to support the heater 2 in the shell 1.  A baffle 14 aids the removal of salt deposits from the circulating liquid.
Patent GB-1361992-A (GB)
Title: Crimping apparatus and method for multifilament yarns
IPC: D02G1/12
Filed: 1971-06-11
Abstract: 1361992 Crimping yarns JOSEPH BANCROFT & SONS CO 11 June 1971 [11 June 1970] 27551/71 Headings D1F and DIW A stuffer crimper comprises a pair of feed rolls and a crimping and setting chamber including a saddle spanning the nip of the rolls and having planks extending over the end surfaces of the rolls, and a guide for traversing multifilament yarn along the nip, the minimum distance between the filaments at the ends of their traverse and the ends of the rolls being 0.05 inches. As shown, Fig. 3, a traverse roll 17 traverses yarn 16 along the nip between rollers 14 (not shown) and 15. A tube forming the crimping chamber connects with tubular saddle 30, Fig. 4, having flanges extending over the end faces of rolls 14, 15, and which may have an internal diameter of at least 0.27 inches. The angles 'A' between the roll radii to the nip and to the wiping edge of saddle 30 may be at least 29. The diameter of the rolls may lie in the range of 1.0 to 1.26 inches. A back weight may rest on the core of crimped yarn on the crimping chamber, and may be connected to a microswitch so that its positions controlls the rate of rotation of the feed rolls.  The crimper, having a back weight and a crimping chamber whose length is at least twenty times its width, may be used to produce a crimped 40 to 200 denier nylon yarn being less than one turn of twist per inch and a bulk level of 18%-35%. The back weight may contribute 45% to 60% of the total bulk level. The same crimper may also be used to produce a crimped 40 to 200 denier polyester yarn having less than one turn of twist per inch and a bulk level of 10% to 28%. The back weight may contribute 33% to 50% of the total bulk level.
Patent GB-1189703-A (GB)
Title: Electromagnetic Fluid Pump.
IPC: F04B53/10
Filed: 1967-06-15
Abstract: 1,189,703. Transistor oscillator circuits. BENDIX CORP. 15 June, 1967 [13 July, 1966], No. 27608/67. Heading H3T. [Also in Divisions F1 and H2] A transistor oscillator circuit for controlling a solenoid-actuated pump (see Division F1), comprises a PNP transistor 50, Fig. 3, with the pump solenoid coil 18 connected between its emitter and an electrical source 56, e.g. a battery or rectified A.C. source, a signal coil 20, magnetically linked with coil 18, being connected between the emitter and base, and a Zener diode 54 being connected between the base and collector to protect the transistor against breakdown voltage surges. Transistor 50 alternatively may be an NPN type, diode 54 then being reversed. In Fig. 4, a negative temperature coefficient resistor 7511 is provided in series with signal coil 320, to ensure full travel of the pump piston over a broad temperature range and at high pressures.
Patent GB-740943-A (GB)
Title: Improvements in shunting systems for track-bound vehicles
IPC: B61L17/00
Filed: 1953-10-08
Abstract: 740,943. Shunting systems. ALWEGFORSCHUNG GES. Oct. 8, 1953 [Oct. 8, 1952], No. 27642/53. Class 20(1). A shunting system for vehicles running on tracks comprises a flat area b, e.g. of concrete, branch tracks c connected to main lines e, f, and terminating in the area b, and a plurality of transportable track sections d movable over the area b and adapted to transport vehicles to and from branch tracks c and to and from loading and unloading zones. A number of sections d may be coupled together and each section d is adapted to be connected to the terminal point of a branch track c. The system is applicable to mono-rail tracks.
Patent GB-339632-A (GB)
Title: An improved soil drainage device or well-point
IPC: E03B3/12
Filed: 1929-09-11
Abstract: 339,632. Moore, T. F. Sept. 11, 1929. Sinking by jetting. - A wellpoint for draining water-bearing soil to facilitate excavation comprises a tube 2 and a wooden backing 3 with one or more drainage channels covered by a wire wrapping 4; the tube 2 and backing 3 are secured in the polygonal upper end of a valve case section as in Specification 339,634. The device is driven into the soil by forcing water under pressure through the pipe 2.
Patent GB-840988-A (GB)
Title: Improvements relating to foam towers
Inventor: HENSHAW THOMAS ANTHONY
IPC: A62C5/00
Filed: 1957-09-03
Abstract: 840,988. Foam towers. PYRENE CO. Ltd. Sept. 2, 1958 [Sept. 3, 1957], No. 27793/57. Class 47. An apparatus for use in delivering fire-extinguishing foam from a height comprises the combination of a mechanical foam generator 2, Fig. 8, with a telescopic tower 1 that is adapted to receive foam at its lower end and to discharge foam at its upper end, and that has a valve at its upper end which can be operated from the ground, the connection between the generator 2 and the base of the tower comprising not only a pipe leading to the tower but also a pipe branching from this to waste and means for diverting the foam along either pipe. The means for diverting the foam comprise a valve 69, Fig. 7 in the branch 68 leading to the tower and a valve 73 in the branch 72 opening to waste, the valves being mechanically interconnected so that one is open whilst the other is closed. The valve at the upper end of the tower has a lever 42 extending away from the tower to receive a rope 43 whereby the valve can be opened or closed and the tower rotated from the ground, this valve when closed being adapted to receive a thrust from foam introduced into the tower whereby the tower is extended, and when open allowing the foam to be discharged. Each section of the tower carries an internal gland at its upper end to seat against innermost section. One of the sections has a bogie 48 arranged so that its wheels 58 can rest against the wall 57 of a tank &c. into which the foam is to be delivered. For transport purposes the tower is attached to a wheeled chassis 4, Fig. 1, which can be disconnected at 7 and after removal of the wheels 5 can be staked to the ground and used as a support for the tower during and after its erection into the operating position.
Patent GB-861455-A (GB)
Title: Manufacture of new graft copolymers
Inventor: SMITH ROBERT ROY
IPC: C08F259/04
Filed: 1957-09-04
Abstract: Graft copolymers are prepared by subjecting polyvinyl chloride or a copolymer of vinyl chloride, preferably with vinylidene chloride or vinyl acetate, to ionizing radiation, particularly gamma rays, while in contact with ethyl acrylate.
Patent GB-715062-A (GB)
Title: Improvements relating to devices for use in aiding bricklaying
IPC: E04G21/18
Filed: 1951-11-30
Abstract: 715,062. Bricklayers' lines. LOVATT & SONS, Ltd., W., and GREAVES, M. S. Nov. 26, 1952 [Nov. 30, 1951], No. 28093/51. Class 20 (2) Flexible lines 8 for levelling off bricks during laying are supported on bars 2 which are adjustable in two planes on supporting stakes 1. Slots are provided in the bars at right angles to slots in the stakes to accommodate clamping screws 5. The bar 2 is notched to locate the lines.
Patent GB-1066744-A (GB)
Title: Fastener discharge means for a fastening device
IPC: B25C5/16
Filed: 1964-07-08
Abstract: 1,066,744. Stapling machines. P. DEMASE, and D. PEASLEE. July 8, 1964 [March 16, 1964], No. 28148/64. Heading B4C. A fastening discharging means for a stapling machine 11 comprises a member 24 pivoted on a housing 18 between an open position and a normally closed position, the member and housing having faces 28, 20 which together define a discharge channel (34, Fig. 1) and means 31 for locking the member in its normally closed position. The member 24 is pivoted on a pin 26 fitted in the housing 18, the locking means 31 being pivoted on the member 24 via a pin 30. The locking means is provided with slots 33 which co-operate, in the closed position (Fig. 1), with abutments 23 formed on the housing 18. In the event of a staple becoming jammed in the discharge channel (34) the member 24 may be opened by raising a handle 32 formed on the locking member. A cartridge 12 for a roll of staples is held on the stapling machine by means of a strap 13.
Patent GB-228634-A (GB)
Title: Improvements in and relating to dyeing processes
IPC: D06P3/14
Filed: 1923-11-08
Abstract: Wool is dyed by means of aqueous solutions of aminoanthraquinones; 1-methylamino-2-amino-, 1-amino-2-methyl-, 1-chlor-2-amino-, 1 : 4-diamino-, 1-methylamino-4-amino-, and 1-methylamino-4-amino-2-brom-anthraquinone are specified as suitable; in an example, wool is dyed red with 1-methylaminoanthraquinone. Alcohol, cresol, or other substance which promotes the solubility of the aminoanthraquinone may be added to the bath.  Specification 214,765, [Class 2 (iii), Dyes &c.], is referred to.
Patent GB-395337-A (GB)
Title: Improvements in processes for hardening iron, steel, and cast iron, alloys by nitrogenising
IPC: C23C8/26
Filed: 1931-10-10
Abstract: In a process for nitrogenizing iron, steel, and cast iron alloys, the process is carried out in the presence of one or more substances which act as catalyst poisons in the manufacture of ammonia such as sulphur compounds, oxygen, oxygen compounds, water vapour and carbon compounds.  In an example, the articles to be treated are sprinkled with a thin layer of cobalt oxide and then nitrogenized in the usual manner.  Specification 366,838 is referred to.