baber/WOPTO huggingface dataset:
Patent GB-1022330-A (GB)
Title: Improvements in acoustic wave generators
IPC: B06B1/06
Filed: 1960-07-25
Abstract: 1,022,330. Acoustic transmitters. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. July 25, 1960 [Aug. 10, 1959], No. 25884/60. Heading H4J. A device for generating bending vibrations in a flexible strip having two sides comprises at least one electroacoustic vibrator extending on one of the sides and means for applying it normally to the strip. The vibrator is preferably of the magnetostrictive type coupled to the strip by an acoustic impedance matching unit which fits into a slot on the strip. In Fig. 5, there are four vibrators 101-104 spaced apart at intervals of half a wavelength along the strip 22; the strip may be rigidly attached at nodal points N 1 , N 2  and N 3 .
Patent GB-1368198-A (GB)
Title: Method for fabricating moulded elements by bonding solid particles with a resin
IPC: C04B38/08
Filed: 1972-06-05
Abstract: 1368198 Resin bonded artificial stone CONTRAVES AG 5 June 1972 [7 July 1971] 26044/72 Heading C1H [Also in Division C3] Construction elements are made by mixing loose mineral grains with at most 5 wt. per cent granular synthetic plastics material (e.g. polystyrene) which can expand into voluminous dimensionally elastic foamed grains spaced 1-3 mm. apart within a given temperature range while internally developing pressure and at most 10% by wt. non-hardened synthetic liquid thermosetting resin gellable within the above temperature range and completely hardenable at higher temperatures until a homogeneous distribution is obtained, the mixture then being filled into a mould, which mould is then sealed to make it pressure-tight and finally heated to the above temperature range and above. The resin may be a liquid resole type phenol formaldehyde resin or a polyurethane. Mineral fibres (e.g. asbestos, glass) may also be present in the mixture. Specified mineral grains are sea sand, quartz, feldspar, lime, expanded clay, and gravel. Mixture compositions with particle sizes, details of mineral grains and plastics materials are exemplified in the Specification.
Patent GB-1432106-A (GB)
Title: Dual spec-rum infrared fire detector
IPC: G08B17/12
Filed: 1974-06-12
Abstract: 1432106 Detecting a fire or an explosion HUGHES AIRCRAFT CO 12 June 1974 [29 June 1973] 26129/74 Heading G1A In a device for detecting a fire or an explosion, a short wavelength radiation (0À7-1À2 micron infrared) channel 12 and a long wavelength radiation (7-30 microns) channel 14 are coupled to a NOR gate 28 including threshold circuits arranged so that a monostable multi-vibrator 42 is only activated when radiation above predetermined thresholds and within both the wavelength ranges is present. The long wavelength channel may comprise a filter 30 a thermopile 32 and a frequency compensating amplifier 34. The short wavelength channel may comprise a filter 20 a photo diode 12 and an amplifier 24. The output of the monostable multi-vibrator 42 may trigger a fire suppression mechanism such as a plurality of pressurized Freon gas bottles each of which is electromagnetically driven by a countdown register. A detailed circuit of the Fig. 1 arrangement is disclosed Fig. 3 (not shown).
Patent GB-998185-A (GB)
Title: Improvements in devices for smallpox vaccinating and the like
IPC: A61B17/20
Filed: 1961-07-19
Abstract: 998,185. Vaccination appliances. H. KRAVITZ, and N. LETTVIN. July 19, 1961 [Aug. 1, 1960; Aug. 8, 1960], No. 26169/61. Heading A5R.  A device for applying  a substance, such as vaccine, by puncturing the skin, comprises a number of spaced pointed members mounted on a rigid base, the rear side of which is of greater area than the area covered by the pointed members and the members are spaced not more than 1À5 mm. from each other, so as to retain a viscous liquid. In one form, nine pyramidal spikes 22 on a square raised portion 20 are mounted on a base 18 of such shape that the border portion 19 is approximately as wide as the side of the portion 20. Such a device may be mounted on a strip of adhesive tape for attachment to the practitioner's thumb. Alternatively, the base may be extended to a rectangular form and held on the thumb by a rubber band or the base may be further extended and curved round to form a split ring for fitting on the thumb.
Patent GB-1277423-A (GB)
Title: Improvements in or relating to analogue to digital converters
Inventor: KANDIAH KATHIRKAMATHAMBY
IPC: H03M1/00
Filed: 1968-05-31
Abstract: 1277423 Analogue digital converters UNITED KINGDOM ATOMIC ENERGY AUTHORITY 30 May 1969 [31 May 1968] 26310/68 Heading G4H In an analogue to Gray coded binary converter of the type comprising a plurality of stages, each stage comprises two operational amplifiers 1, 10 (Fig. la) the first one delivering an output bit in accordance with the level of the input V in  to the stage relative to a predetermined datum and feeding a signal to the second amplifier which after amplification is fed as the input to the next stage. In the embodiment of Fig. la the output bit depends on the polarity of the signal at terminal 5 this being determined by a long tailed transistor pair 17, 18 delivering an output on either lead 19 or 20. The signal |V in | at terminal 9 is fed to the second amplifier 10 which delivers a signal 2 |V in |-E 0  to the next stage. In a modification (Fig. 2, not shown) the output bit is determined in dependence on whether the input is less than or greater than -E 0 , the first amplifier (1) feeding a signal |V in +E 0 |-E 0  to the second amplifier (10) which supplies a signal (2 |V in +E 0 |-E 0 ) to the next stage. In a further modification (Fig. 3a) which prevents overloading in the operational amplifier 1, the amplifier has push pull outputs at 5, 23 and an additional negative feedback via diode 26 to input terminal 4.
Patent GB-235081-A (GB)
Title: Improvements in universal joints
IPC: F16D3/202
Filed: 1924-11-07
Abstract: 235,081. Barnett, W., and Florendine, J. Nov. 7, 1924. Universal joints of the kind comprising a sphere 4, Fig. 3, on one shaft 3 inside a divided internal sphere 6 on the other shaft 7, the spheres being connected by members 9 which pivot in recesses in one sphere and slide in arcuate slots 8 in the other. The intermediate members 9 are shaped as shown in the other figures with a hemispherical part 1 for the pivoted movement. The part 2 which slides is semi-cylindrical, triangular, or rectangular.
Patent GB-1473337-A (GB)
Title: Dorno ray transmitting sheet
IPC: B29C41/26
Filed: 1974-06-14
Abstract: 1473337 U.V. transparent films KUREHA KAGAKU KOGYO KK 14 June 1974 [16 June 1973] 26605/74 Headings B5B and B5A [Also in Division G2] Polyvinylidene fluoride and polymonochlorotrifluoroethylene films and sheets are prepared by melt-extrusion at a temperature of 180 to 270 C., cooling to a temperature of from 10 to 150 C. to permit spherulite growth to a size of from 10 to 100 Á and subsequently heating the sheet to a temperature of from 80 to 180 C. whilst stretching it at least uniaxially to up to 1À8 times the spontaneous stretch magnification (as defined), The sheet is preferably biaxially stretched and heat set afterwards at a temperature of from 100 to 160 C. Alternatively, the sheet may be stretched during the cooling step and simultaneously with spherulite formation at a temperature of from 160 to 180 C. The products must have a thickness of from 20 Á to 2 mm. and a spherulite size of less than 10 Á and are capable of transmitting more than 40% of incident rays of wavelength 2800 to 3300 .
Patent GB-1432348-A (GB)
Title: Control means for electric motors of battery-operated vehicles
IPC: H02P7/28
Filed: 1972-06-08
Abstract: 1432348 Control of D.C. motors CABLEFORM Ltd 6 June 1973 [8 June 1972] 26671/72 Heading H2J A D.C. compound motor A of an electric vehicle is driven by closure of an accelerator pedal switch MS and a tripswitch TS to energize a relay C1/3 whose contacts C1.1 change over to connect the motor and its series field winding SF to a battery B through a pulsing thyristor switch S, the other relay contacts C1.2 and C1.3 respectively energizing forward or reverse contactors CF, CR for winding SF and de-energizing a relay C2/1 whose contacts C2.1 open to switch out the shunt field winding AF of the motor. To brake, switch MS is opened to cause contacts C1.1 to connect the armature A across a resistor R and contacts C1.3 to energize the relay C2/1 to connect the winding AF across the battery B through an adjustable resistor VR whose value determines the degree of braking. If contactors CF, CR are reversed during driving without opening switch MS, braking is effected by reverse energization of the motor. A normally-open switch 55 is closed when the vehicle driver's seat is occupied.
Patent GB-158330-A (GB)
Title: Improvements in stropping or sharpening devices for razors, knives and the like
IPC: B24D15/08
Filed: 1919-10-30
Abstract: 158,330. McGown, R. O., and Scott, W. H. Oct. 30, 1919. Stropping. apparatus. -A razor, knife, or other blade 9 to be sharpened or stropped is mounted in a holder 4 located between, and parallel to, two rollers 1 journaled in a casing 2. The rollers are adapted to be rotated, through an endless belt 11 and pulleys 12, by a handle 3; the belt also engages a pulley 10 on the holder 4, whereby the blade is rocked into contact with the rollers. The rollers are reciprocated axially in opposition to springs 7 by the engagement of cams 6, carried by the rollers, with fixed cams 5. The blade-holder comprises a split tube 4<a> journaled in the casing and adapted to receive a split cylinder comprising two parts hinged together and provided with studs, which enter the perforations in the blades. Specification 136,673 is referred to.
Patent GB-1425470-A (GB)
Title: Fluid pressure operated clutch release mechanism
IPC: B60T11/10
Filed: 1972-06-08
Abstract: 1425470 Clutch/brake combinations; master cylinders AUTOMOTIVE PRODUCTS Ltd 8 June 1973 [8 June 1972] 26791/72 Headings F2L and F2F In a clutch/brake combination for a motor vehicle in which, after release of a fluid-pressure operated clutch 10 a brake 35 can be operated by fluid pressure to brake the driven shaft, the clutch and brake are operated by a tandem master cylinder 18. Initial depression of a clutch pedal acts on a piston 14 of the master cylinder through a rod 13, this piston moving a piston 15 through a spring 19 so that fluid under pressure passes through a port 25 to a slave cylinder 28 which pivots a lever 29 to disengage the clutch 10, which is a friction clutch. When clutch 10 is disengaged the piston 15 comes against an abutment 21 and further depression of the pedal causes the spring 19 to yield and fluid to pass from between pistons 14 and 15 out of port 24 to engage the brake, which may have a drum 36 acted upon by shoes, or it may be a disc brake 49 (Fig. 3). A relatively weak spring 22 is provided between piston 15 and the end of the chamber 16 of the master cylinder. A spring 34 in the slave cylinder 28 ensures that the clutch is self-adjusting. In an alternative construction the stronger spring, spring 19, is between the piston 15 and the end of chamber 16 so that initial clutch pedal movement causes the pistons to come together, the connections to outlets 24 and 25 being reversed. The disc brake shown in Fig. 3 comprises a disc 50 splined to, and axially movable on, the clutch driven shaft 41. The bell housing 43 of the clutch 40 supports a body 52 which includes a brake-operating piston and cylinder 57, 56, the piston having a brake pad 58 and pressing the disc 50 against a further brake pad 55 in the body 52.
Patent GB-1401909-A (GB)
Title: Flame retardant acrylonitrile-butadiene-styrene polymeric compositions
IPC: C08K5/18
Filed: 1973-06-05
Abstract: 1401909 Flame retardant compositions MICHIGAN CHEMICAL CORP 5 June 1973 [6 June 1972] 26868/73 Heading C3P The invention comprises a flame retardant acrylonitrile-butadiene-styrene polymeric composition containing, as flame retardant agent, a compound of the formula wherein each of the M groups, which may be the same or different, represents an oxygen or sulphur atom; each of the substituents Z, which may be the same or different, represents a chlorine or bromine atom; each of the substituents A, which may be the same or different, represents a fluorine atom or a C 1 -C 4  alkyl, phenyl, methoxy or cyano group; each of m and m<SP>1</SP>, which may be the same or different, is an integer of 1 to 5; and each of i and i<SP>1</SP>, which may be the same or different, is 0, 1 or 2 and m + i and m<SP>1</SP> + i<SP>1</SP> do not exceed 5 provided that when m= 1, is is 0 or 1 and when m<SP>1</SP>= 1, i is 0 or 1 and when m=m<SP>1</SP>= 1, both Z groups represent bromine atoms and both M groups represent oxygen atoms; and R represents a group of the formula (wherein n is an integer of 1 to 6, and each R<SP>1</SP> group, which may be the same or different, represents a hydrogen atom or a C 1 -C 4  alkyl group) -CH 2 -CH(OH)-CH 2 -, -(CH 2 ) w -O-(CH 2 ) w - (wherein each w represents 1 or 2) (wherein each X group, which may be the same or different, represents a chlorine or bromine atom and p is 0 or an integer of 1 to 4) or The flame retardant additive is usually 5 to 25% by weight of the composition. The final composition may also contain preferably up to 5% by weight of the composition of a synergist selected from antimony, arsenic or bismuth containing compounds.
Patent GB-1088036-A (GB)
Title: Discharge valve
IPC: F16K5/00
Filed: 1964-10-02
Abstract: In the continuous polymerization of 1-olefins to form a slurry of particulate polymer in liquid monomer, the slurry is discharged from the reactor by valve means comprising parts relatively movable to positions opening and closing said valve and a thin layer of particulate polymer between said parts for lubricating the same.  The discharge system may comprise two valves, in series and operated sequentially, with a chamber between.  The invention is illustrated by the polymerization of liquefied propylene in the presence of a catalyst formed from titanium trichloride, ethyl aluminium dichloride and hexamethyl phosphoric triamide to produce polymer particles of suitable size to function as lubricant, which particles replace the original grease lubricant in the valves and allow continuous subsequent operation.
Patent GB-542589-A (GB)
Title: New or improved composition for use in decarbonising internal combustion engines
IPC: C11D7/26
Filed: 1939-09-30
Abstract: 542,589. Detergents; decarbonizing internalcombustion engines. JOHNSTON, D. Sept. 30, 1939, No. 26959. [Class 91] A liquid for decarbonizing internal-combustion engines consist of methylene chloride. acetone, and cellulose acetate. There may be added: stearine. and/or magnesium silicate to reduce evaporation ; benzaldehyde to improve the smell; and colouring matter, e.g. methylene blue. The Provisional Specification states that amyl acetate may replace acetone, and also specifies aniline yellow, aniline red, aniline blue and aniline black as suitable colours.
Patent GB-1197259-A (GB)
Title: Starter-Grower Cage for Chicks
IPC: A01K31/00
Filed: 1968-06-06
Abstract: 1,197,259. Chick-cages. DIAMOND INTERNATIONAL CORP. 6 June, 1968 [9 June, 1967], No. 27023/68 Heading A1M. A cage for chicks consists of a floor merging with a forwardly-upwardly sloping ramp 32, and an extension 40 having a wire mesh floor 42 and an inclined top 44 covering a slot 38 in the front wall 24 so that the chicks can climb up the ramp 32 to a convenient height to feed from a trough 50 running laterally along the cage. The feed in the trough 50 is covered with a wire-mesh strip 60 to prevent feed-waste; a vertically adjustable water cup 70 is arranged well behind the trough to prevent splashing of water in the feed. A flexible curtain 100 covers the hind half of the cage and also hangs downwardly in the cage through a slot in the roof to divide the cage into two zones, the rear zone being heated by a heating pipe 96. The cages are arranged as a battery in two tiers, Fig. 1, spanning a droppings pit 14 and supported on a framed structure 10, 12. Guard plates 98 shield the lower cages from droppings from the upper cages.
Patent GB-902763-A (GB)
Title: Method of extracting alkaloidal constituents from plant material
IPC: C07D489/00
Filed: 1958-08-22
Abstract: Water-soluble alkaloidal constituents of plants are extracted from disintegrated plant material by a process which comprises the steps of filling an extractant vessel to more than one half but less than completely full with the plant material, introducing into the vessel an alkaline aqueous extractant the pH of which is adjusted to substantially the known minimum solubility of said alkaloidal constituent in water, maintaining the level of the extractant above that of the plant material, passing through from below an immiscible organic solvent which is a known solvent for the alkaloidal material and which is of lower density than the aqueous extractant, drawing off from above the level of the aqueous extractant the solvent containing dissolved alkaloidal constituents, separating these constituents and returning the organic solvent to the extraction vessel.  In a preferred feature of the process a minor proportion of the aqueous extractant is withdrawn from the vessel, emulsified with an equal volume of the organic solvent and the emulsion introduced into the base of the vessel at a rate substantially equal to the rate of withdrawal of the said proportion and the organic solvent containing the dissolved alkaloidal constituents.  A suitable extraction apparatus for continuous operation is described and the process is illustrated by the extraction of raw morphine from ground poppy capsules.  The preparation of cocaine from coca leaves and quinine from cinchona bark is also mentioned, the pH of the alkaline solution being between 9 and 10 in each instance.
Patent GB-426485-A (GB)
Title: Improvements relating to the stringing of tennis and like racquets
IPC: A63B51/14
Filed: 1933-10-02
Abstract: 426,485. Rackets; stringing. SIEFF, S. H., 30, Mildmay Park, and PRITCHARD, A., 48, Peartree Street, St. Luke's, both in London. Oct. 2, 1933, No. 27065. [Class 132 (ii)] In stringing tennis and like rackets, a string is looped round a slidable wedge member 2 and gripped between the edges 5, 6 thereof and abutments 3, 4 on a base member 1, as the latter is retracted to tension the string, the abutments 3, 4, the edges 5, 6 and the rear edge of the wedge being preferably grooved as at 7 to receive the string. The wedge is integral with or attached to a tongue 8 slidable in an inclined slot 9 in the base 1 and a plate 11 is secured to the tongue by a bolt 10. When used as a hand tensioning device, the wedge is retracted from the abutments to release the string by pulling on the bolt 10, but when used with a machine, for example, as described in Specification 388,793, the base member 1 is bolted at 15 to an arm 16 carried by a head 13 through which tension is applied, and a catch lever 17 is provided to release the string automatically. The lever 17 is mounted on pins 18, 19 slidable in slots 21, 22 in skirting plates 20 depending from arm 16, and is biassed by a spring 23 tending to move the catch lever to the left in Fig. 4. When tension is applied, the pins 18, 19 are both in the slot 21 and the catch lever 17 is in the " dotted position engaging a catch 12 on plate 11. When the tension is released, the arm 16 moves inwards and a projection 17<a> on the catch lever engages a fixed abutment 14 whereupon continued inward movement of arm 16 causes retraction of the wedge until the pin 19 enters the inclined slot 22 when the catch lever is rocked to the position shown to release the wedge. Alternatively, the wedge may be retracted through Bowden wire mechanism actuated through a foot or hand lever.
Patent GB-195668-A (GB)
Title: Improvements in or relating to dolls, puppets and like toy figures
IPC: A63H11/06
Filed: 1921-10-12
Abstract: 195,668. Plantation Rubber Manufacturing Co., Ltd., and Dessau, M. M. Oct. 12, 1921. Animals; figures; mechanical and like toys. -A toy figure has attached to it a strip a of resilient material representing a walking-stick so that when the figure is moved or shaken, the strip swings and becomes looked in different positions. In another construction, the figure is mounted on a ball or pad of resilient material, such as smoked sheet rubber, at or near its feet, or the figure may be attached to the ball by a pogo-stick. When the figure is pressed and suddenly released, it is caused to jump.
Patent GB-325466-A (GB)
Title: Improvements in or relating to variable friction gearing
IPC: F16H15/08
Filed: 1929-09-06
Abstract: 325,466. Robertson, J. H. Sept. 6, 1929. Variable - speed friction gearing of the kind in which a driven friction wheel is moved eccentrically with respect to a driving disc, comprises a driving disc b which is relatively thin and is cooled by a centrifugal current of air behind it. The gear face of disc b is coned, and the rear frame carries circular or radial fins or ribs g, which assist the cooling and stiffen the disc. The disc b is secured by studs c<1> to a back-plate c, and has peripheral openings e. Into a central aperture d is screwed from the rear a centrifugal fan h. Cooling air driven by the fan enters aperture d, is deflected by a boss c<2> on plate c, passes over the fins g, and is thrown out at the apertures g. The air may be circulated by vanes attached near the apertures e.
Patent GB-685339-A (GB)
Title: Improvements in or relating to fluid-pressure servo braking systems for vehicles
Inventor: SIMPSON JOHN KEITH
IPC: B60T13/565
Filed: 1950-11-07
Abstract: 685,339. Fluid pressure brakes. AUTOMOTIVE PRODUCTS CO., Ltd. Oct. 18, 1951 [Nov. 7, 1950], No. 27214/50. Class 103 (i). A fluid pressure servomotor for operating the hydraulic master cylinder 13 of a vehicle brake system, which as shown is of the vacuum suspended type comprising a servo - piston 21 within which is mounted a slide valve 27 for connecting the chamber 36 either to atmosphere or a vacuum source according to the movement of a manual control rod 28, is characterized in that " feel " is given to the operator by use of a plunger for the master cylinder, which is hollow, and contains a thrust rod 41 subject at one end to the pressure in the master cylinder and which transmits force to the valve member 27 at the other end against the resistance of a spring 43. The master cylinder.13 has a replenishing valve 48 tilted to open position when the plunger is in its rearward position. Reference has been directed by the Comptroller to Specification 678,248.
Patent GB-1142602-A (GB)
Title: Improvements in or relating to stripping and cutting tool
IPC: H02G1/12
Filed: 1965-06-28
Abstract: 1,142,602. Stripping cables. P. T. ENRIGHT. 28 June, 1966 [28 June, 1965], No. 27220/65. Heading H2C. As the handles 8 of the stripping tool shown are pressed together gripping jaws 3, 5 and cutting jaws 4, 6 are first closed on to the wire and the two pairs of jaws are then moved apart to remove the severed insulation, sets of notches being provided in the jaws for dealing with different sizes of cable. As the jaws are closing the plates 1 which carry them are held together by a latch controlled by a spring 13 which is over-ridden by continued pressure on the handles after the jaws have closed. The latch then moves to a position where the plates 1 are held apart until the jaws have re-opened.