baber/WOPTO huggingface dataset:
Patent GB-995746-A (GB)
Title: A frequency modulation system
IPC: H03G1/04
Filed: 1961-12-19
Abstract: 995,746. Frequency modulation. MINNESOTA MINING & MANUFACTURING CO. Dec. 19, 1961 [Dec. 19, 1960], No. 45485/61. Heading H3R. In an FM system of high signal to noise ratio, a video signal is applied through a low pass filter 12 and through a delay line 14 producing an equal delay to the filter 12 and the two outputs applied to a differential amplifier 16 so that only an upper and noisier frequency band, e.g. 1À2-4 mc/s. passes to a non-linear amplitude compressor 18. The two bands are then recombined at 20 before frequency modulating at 32 a carrier which is then non-linearly amplitude modulated in a power amplifier 36 increasingly in relation to the instantaneous amplitude of the noisier upper band before transmission or recording on tape. The amplitude modulation voltage may be derived by full wave rectifying at 46, 48, an output of the compressed highs taken through a cathode follower 40 and the amplifier 36 biased so that the output is small in the absence of amplitude modulation voltage. The compressor 18 may produce, as in Specification 953,135, a fractional index power of its input. At a receiver (or recording reproducer) the FM carrier is limited and demodulated in a discriminator, then the two bands separated by a filter, delay line and differential amplifier (arranged as circuits 12, 14, 16); and the compressed band expanded inversely in relation to its previous compression, e.g. by an amplifier with output including a pair of oppositely directed diodes connected in parallel and in series with a resistor.
Patent GB-1184492-A (GB)
Title: Improvements in Power-Assisted Hydrostatic Braking Systems for Tractor Vehicles and their Trailers.
IPC: F16D65/28
Filed: 1967-10-06
Abstract: 1,184,492. Servo-assisted braking systems. REGIE NATIONALE DES USINES RENALT. 6 Oct., 1967 [24 Nov., 1966], No. 45930/67. Heading F2F. An hydraulic braking system has a pair of pedals for operating valves to control tractor brakes unilaterally, the pedals being both solid with the plunger of a master cylinder and also controlling a servo actuator for the master cylinder, this actuator operating the trailer brakes directly. Fig. 1 shows one of the pedals 7, the lower part of which operates a push-rod to control the passage of fluid from the master cylinder 1 through line 5 to the brakes on one side of the tractor. The pedals are linked by a pivot pin 13, and when one pedal is depressed, this pin and the plunger 16 of the master cylinder 1 at first move to the right against a spring 18; subsequently the depressed pedal pivots about the pin 13 to hold the push-rod in, while the other pedal is drawn out by the pin 13 and releases its push-rod to shut off its brake cylinder from the master cylinder. When the plunger 16 moves to the right, a piston 22 attached thereto causes a rubber O-ring 50 to engage the end of another piston 24, thus cutting off the master cylinder from the reservoir R. Increase in volume of the chamber 23 permits fluid to flow thereto from the servo-actuator 2 via a non-return ball-valve 41. Pivoting of the pedal about the pin 13 causes a stop 48 to press on a hollow rod 43 against a spring 44 and move a slide member 30 to the left in the servoactuator 2. This breaks the connection between the chamber 38 and the duct 27 leading to the reservoir, and connects the chamber to a groove 33 which receives oil from a pump P on the way to other utilization devices U on the vehicle. At the same time, the fluid flow between the groove 33 and the outlet chamber 35 is throttled, so that the pressure in groove 33 rises. This increase is communicated via chamber 38 and duct 28 to give servo assistance to the master cylinder, and via duct 39 to the trailer brakes. The pressure in the inner chamber 51 of the servo actuation rises until it balances the force of the spring 44, when the slide member 30 reaches an equilibrium position. The maximum pressure is limited by the rod 43 touching an abutment 52, when the spring 44 determines the force on the member 30. If other devices are in use such that the hydraulic pressure is greater than necessary to operate the brakes, the member 30 moves to the left to isolate the chamber 38 from the pump.
Patent GB-1280145-A (GB)
Title: Improvements in or relating to detection of submarine objects
Inventor: WHITE ERIC LAWRENCE CASLING
IPC: G01V3/08
Filed: 1968-09-27
Abstract: 1280145 Detecting submarines EMI Ltd 29 Sept 1969 [27 Sept 1968] 46124/68 Heading G1N Submarine objects are detected by sensing, in an aircraft, the local strength and/or spatial phase of the earth's magnetic field and comparing the value so sensed with a stored value of the field value appropriate to the location, a change in the value indicating the presence of a submarine. The stored values may be obtained from a sensor in an aircraft flying a maintained fixed distance ahead of a second aircraft or a towed glider which carries another field sensor. The second aircraft or glider is maintained a fixed distance and height behind the aircraft.
Patent GB-993449-A (GB)
Title: Compactly stackable chairs and chair rows
Inventor: ROWLAND DAVID L
IPC: A47C5/04
Filed: 1963-11-22
Abstract: 993,449. Stackable chairs and chair rows. D. L. ROWLAND. Nov. 22, 1963 [Nov. 28, 1962], No. 46156/63. Headings A4J, A4U and A4W. Stackable chairs 50 are adapted to be joined together in rows by six connection members secured to each chair frame 51 and mounted three on each side of the chair, two connection members being secured to each rear leg 62, 63 one above and one below. The connection of the rear leg to its associated side rail 70, 71 and a third connection member 85 or 86 being secured to a forward portion of each bottom rail 60, 61. The connection members on the rear legs 62, 63 of the chair may comprise co-operating projections 103, 104 and openings 105, 106, Fig. 16, formed in stiffening members 66 and 67 respectively, and connection members 85, 86, Fig. 22, on the bottom rails 60, 61 may comprise male and female members which snap-lock together. Alternatively the stiffening members 66, 67 may be formed with bent fastening members 144-147, Fig. 38, which snap-lock together and connection members 150, 151, Fig. 41, on the bottom rails 60, 61 formed with co-operating projections and recesses. The connection members 85, 86 and 150, 151 form glides which, when the chairs are stacked, rest upon one another. Glides 87, 88 may also be secured to the rear of the bottom rails 60, 61. The seat and back, which are of plywood or fibre glass, may be an integral unit or formed in separate parts 52, 53. The seat 52 is attached to the frame members 70, Fig. 30, by inserting a rolled edge 81 into a bracket 80 welded to the frame member 70 and crimping the bracket to encircle the rolled edge 81. Alternatively, Fig. 32, the edge of the seat or back may be welded to a bracket 243 or attached by a screw 233 or by rivet 236 to a bracket 234, or by a hook and groove to a bracket 237. The frame members may be made from metal, wood, reinforced plastics. or glass fibre rods.
Patent GB-1344908-A (GB)
Title: Electrophotographic method
IPC: G03G15/02
Filed: 1971-10-05
Abstract: 1344908 Electro-photographic processes FUJI PHOTO FILM CO Ltd 5 Oct 1971 [5 Oct 1970] 46357/71 Heading G2H A web 1 comprising a photo-conductive layer on a conductive substrate is electrostatically charged by means of a main corona discharge device 40 facing the photo-conductive layer and held at one polarity, and auxiliary corona discharge devices 41, 42 facing the edges of those parts of the web wound on supply and take-up rollers 45, 44 and held at the opposite polarity. This obviates the need for earthing the conductive substrate during charging. Also there is no need to earth the substrate during developing, which may be carried out by pumping developing liquid through an earthed grid electrode (84, Fig.8, not shown). The charging currents can be controlled to produce positive or reversal development.
Patent GB-1300543-A (GB)
Title: Process for preparation of diamond
Inventor: GRENHALGH GEOFFREY HARVEY
IPC: B01J3/06
Filed: 1968-09-30
Abstract: 1300543 Diamond synthesis G H GREENHALGH 30 Dec 1969 [30 Sept 1968] 46377/68 Heading C1A Synthetic diamond is produced by reducing a carbon compound which is substantially free of hydrogen at 500-1500‹ K. and 20,000- 70,000 atmospheres. Reduction of hexachloro - ethane with sodium metal dispersed on NaCl and reduction of hexachlorobenzene with lithium dispersed on LiCl are exemplified.
Patent GB-1025757-A (GB)
Title: Improvements in or relating to copying processes and sheets
IPC: B41M5/10
Filed: 1962-12-12
Abstract: Compositions used in making record sheets (see Division D2) comprise: (Examples IV and V) polyvinyl chloride, titanium dioxide, aluminium silicate and water; and (Example VIII) chlorodiphenyl resin and polyvinyl methyl ether.ALSO:A copying paper comprises a white or lightly coloured paper sheet or foil having on the side to be written upon a coloured layer consisting of polyvinyl acetates or acetals and a superposed white or pale-coloured layer of polyvinyl chloride and on the reverse side a layer of an adhesive synthetic resin.  This adhesive synthetic resin may be polyethylene or chlorodiphenyl resin or a mixture of these and may also contain a polyvinyl ether.  It may be white or pale-coloured.  When superposed sheets of the invention are written upon, the adhesive layer of each sheet lifts off the cover layer of the next sheet to reveal the coloured layer beneath. The cover layer of the top sheet is also removed by the action of the writing instrument or typewriter. Alternatively, the first two layers can be omitted from the top sheet and the adhesive layer from the bottom sheet of the set. The layers may be applied to the whole surface of the base sheet, or only in certain areas.  Pigments referred to are: in the coloured layer, carbon black and titanium dioxide (used together), ultramarine and cadmium red; in the washing layer titanium dioxide and aluminium silicate (used together), and in the adhesive layer titanium dioxide or none.
Patent GB-959641-A (GB)
Title: A unit for causing an auxiliary telephone to ring if a main telephone is not answered
IPC: H04M19/04
Filed: 1962-12-12
Abstract: 959,641. Automatic exchange systems. TELEFONAKTIEBOLAGET L.M. ERICSSON. Dec. 12, 1962 [Dec. 12, 1961]. No. 47017/62. Heading H4K. In a unit for connecting an extension telephone to a line if a call is not answered at the main telephone, a capacitor is charged by rectified ringing current and is discharged through mechanically latching relays which connect the extension set to the line at the end of the second burst of ringing current, an electromagnetic device being incorporated to release the latched relays. As shown, rectifier L is connected across the bell of main telephone set A so that on receipt of ringing current relay R1 pulls in and capacitor C is charged. At the end of the burst of ringing current R1 releases and C discharges through relay R2 provided with mechanical latch h2 and connects relay R3 to C. Circuit values are selected so that R3 cannot operate until C has been recharged by the second burst of ringing current. R3 has a mechanical lath h3 and connects extension set B to line La, Lb. When the hand-set of A is next lifted relay R4 operates, releasing the latches h2, h3 of R2, R3, a break contact of R2 then shorting out R4 so that it does not present a high impedance to speech currents. Diode L1 is incorporated in the charging circuit of C to prevent C discharging through R1 at the end of the bursts of ringing current.
Patent GB-1126661-A (GB)
Title: Improvements in or relating to gas-filled electric discharge devices
IPC: H01J17/40
Filed: 1964-11-19
Abstract: 1,126,661. Cold cathode tubes. M-O VALVE CO. Ltd., and R. W. YOUNG. 12 Nov., 1965 [19 Nov., 1964; 29 June, 1965], Nos. 47157/64 and 27507/65. Heading H1D. In a gas-filled electric discharge device of the kind including a trigger electrode interposed between an anode and a cold cathode, the cold cathode comprises a mass of solid material adhering to an electrically insulating support, e.g. part of the envelope, at least 30 atomic per cent of which material consists of a metal having a latent heat of vaporization not greater than 50 kilocalories per mole and a vapour pressure at 1000‹ C. of not less than 0À1 torr. The solid material may be a metal which may be incorporated in an alloy and may, for example, comprise Cd, Zn, Mg, Bi, Cs, K or Ba. As shown, the cathode 2 comprises 2 c.c. of Cd, Zn or a Cd-Zn alloy in contact with a W rod 6, and is used in a surge diverter comprising trigger electrode 4 and anode 3. The tube contains argon at a pressure of 0À29 torr. The ready production of Cd and/or Zn vapour upon initiation of a discharge permits the use of lower triggering voltages. Specific dimensions and operating voltages are given. The cathode may alternatively comprise a low melting point alloy of 33À6 Atomic per cent Cd and 66À4 Atomic per cent Sn.
Patent GB-1208373-A (GB)
Title: Apparatus for obtaining the product of a first magnitude and a second magnitude which is a function of a variable parameter
IPC: G01F15/02
Filed: 1968-10-04
Abstract: 1208373 Electric selective signalling COMPAGNIE DES COMPTEURS 4 Oct 1968 [16 Oct 1967] 47219/68 Addition to 1115749 Headings G4D D6Y and D7X The apparatus of the parent Specification 1115749 is modified in that for each unit of fluid recorded by a meter 1, Fig. 1 a contact 19 is closed to energize synchronous motor 14 driving via a shaft 15 the slider 11a of a potentiometer 11 and the toothed wheel 10a of a pulse generator, the motor being kept energized for one rotation of the shaft by a cam disc 21 and associated contact 20, the motor stopping at the end of the rotation until another unit of flow is recorded. As in the parent Specification the sawtooth output voltage from potentiometer 11 is compared with the voltage representing the density of the fluid, pulses being accumulated from the pick-up 10b of the toothed wheel 10a in a counter 13 during each cycle of the sawtooth until equality between the two voltages is detected, the count hence representing volume x density.
Patent GB-1089837-A (GB)
Title: Process for preparing tetra alkyl ammonium alkyl sulfates
Filed: 1965-11-08
Abstract: Tetraalkylammonium alkylsulphate salts having one to eight carbon atoms per alkyl group are prepared by reacting a di-(C1- 8 alkyl)-sulphate with a tri-(C1- 8 alkyl)-amine in the absence of substances other than the above-specified reactants and product.
Patent GB-1084444-A (GB)
Title: Process for moulding thermoplastic resins
IPC: B29C35/16
Filed: 1964-11-20
Abstract: 1,084,444. Moulding plastics. RUBBERMAID Inc. Nov. 20, 1964 [Nov. 22, 1963], No. 47344/64. Heading B5A. Thermoplastic resin material is moulded by heating the material to a viscous mass, preheating a separable mould to about the temperature of the viscous material, a mould part receiving the material to an amount exceeding the volume of the mould cavity, closing the mould under a pressure sufficient to conform the material to the mould cavity, cooling the mould until the material is below its distortion temperature, and opening the mould and removing the formed article. The material may be polyethylene, polyvinyl chloride, polystyrene, polypropylene, or acrylonitrile-butadiene-styrene. The material in the form of dry powder or granules may be mixed and heated in a mill or extruder to form a soft viscous mass. Globs of the mass are delivered to the mould cavity in an amount about 10% greater than the cavity capacity. The cavity is formed in a two-part mould, the parts being mounted in the platens of a standard press and being preheated to about 30‹ F. less than the temperature of the viscous mass. The mould is then closed under sufficient pressure, for example 100 to 500 p.s.i., to cause the material to fill the mould cavity, excess material being forced out along the parting line in the form of flash. The mould is then rapidly cooled, preferably by circulating cooling medium through the mould parts, to a temperature to about 14'0‹ F. or at least 140‹ F. below the moulding temperature. In forming certain articles, for example deep drawn containers, an increased follow-up pressure, for example 500 to 2000 p.s.i., to compensate for decreased volume of the material as it cools is applied until the material is cooled below its distortion point. Temperatures quoted for the materials are in the range 300‹ to 380‹ F., for the mould 270‹ to 330‹ F., and for the cooled material 120‹ to 210‹ F. It is stated that the time cycle for each moulding operation is about 2 minutes.
Patent GB-1098146-A (GB)
Title: Travel gear for cranes and trolleys
IPC: B66C7/00
Filed: 1966-10-21
Abstract: 1,098,146. Vehicle driving gear; securing wheels on shafts. DEMAG-ZUG G.m.b.H. Oct. 21, 1966 [Jan. 13, 1966], No. 47405/66. Headings B7C and B7H. In travel gear for travelling cranes and trolleys having track-wheel girders of box-type construction, the driving torque is transmitted to the track-wheel 1 by a track-wheel shaft 2 mounted in roller bearings 5, all the gear-wheels of the drive gearing are enclosed in a gear-box 16 flanged to one side-wall 12 of the girder 11, and the torque-transmitting connection between the output from the gearing and the shaft 2 is disposed internally of the shaft 2 or internally of the gear-box 16. As shown, the gear-box 16 forms part of a geared motor, and an output shaft 15 carrying the final gear-wheel of the drive gearing extends into a bore 14 in the shaft 2 and is coupled to the shaft 2 by a key 17. In Figs. 2, 3 (not shown), the final gear-wheel is keyed to the shaft 2 within the gear-box. The gear-box flange is bolted to the side-wall 12 or to a ring 18 welded thereon. The roller bearings 5 are mounted in bushes 9, 10 welded into the side-walls and/or into web plates 13 extending parallel thereto. The track-wheel 1 is adjustably secured on the shaft 2 by compressed spring washers 3, or in Fig. 2 (not shown), the trackwheel 1 is slidably keyed to the shaft 2 and adjustably positioned between collars on the shaft by removable C-shaped spacers slipped on to the shaft and each prevented from rotating by a pin (Fig. 4, not shown) engaging one of several recesses in the adjacent spacer. In Fig. 3 (not shown), the track-wheel 1 is mounted on the shaft 2 in an overhung position externally of the bearings 5.
Patent GB-1277599-A (GB)
Title: Cleaning tool having a sponge element
Inventor: WRIGHT ARTHUR
IPC: A47L13/22
Filed: 1969-09-26
Abstract: 1277599 Self wringing mops; reservoir mops A WRIGHT 22 Dec 1970 [26 Sept 1969] 47466/69 Headings A4F and A4K A sponge mop particularly for lavatory cleaning comprises a sponge cleaning element 12 at one end of a handle 10 and which is slidably mounted a generally cup-shaped housing 15 movable between an operating position in which the element 12 is fully exposed and a storage position in which the element 12 is wholly contained within the housing 15 and is at least partially compressed against the interior wall thereof so that any excess of liquid in the sponge element 12 is squeezed therefrom. Holes 18 are provided in the housing 15 for the passage of liquid squeezed from the element 12. The latter is retained in its storage position by the engagement, with an annular shoulder 19 within the housing 15 of a rubber washer 14 secured to the handle 10. The rubber washer 14 can serve as a scraper. Powdered or liquid detergent may be placed in a compartment 21 in the wall of the housing 15 for passage through holes into the sponge element 12 when the latter is compressed within the housing. Alternatively the handle 10 may be hollow to provide a reservoir for detergent. In a further embodiment the handle 10 and an extension 16 of the housing 15 have co-operating screwthreads so that the sponge element 10 is rotated when it is moved to its operating position. As a further alternative the washer 14 may be omitted and a spring-biased hinged flap provided to close the end of the housing when the sponge element is within it.
Patent GB-1498938-A (GB)
Title: Composting
IPC: C05F3/00
Filed: 1973-10-11
Abstract: 1498938 Composting slurries NATIONAL RESEARCH DEVELOPMENT CORP 8 Jan 1975 [11 Oct 1973] 47491/73 Heading C1B Organic waste (e.g. excrement) in the form of a slurry is composted in admixture with vegetable matter in a form such as to provide a porous, air permeable matrix, the drainings from the bed being passed repeatedly through composting organic matter to reduce the B.O.D. and also the volume of liquor (by evaporation). The slurry may be added to the matrix, e.g. straw or straw and wood shavings, twigs, or hay or the two may be added together, or layered. The drainings may be recirculated through the same bed to reduce B.O.D. &c. or through one or more previously built beds. The method may be operated with no net liquid outflow, fresh drained liquor being added to recirculating liquor to replace that lost by absorption and evaporation (i.e. with a slurry of 7% or more solids) or the drainings, where B.O.D. has been reduced to a minimum, may be passed to a biological filter for further B.O.D. removal (e.g. when slurry has 4% or less solids). The composting preferably takes place at 60 C. or more and air may be passed through the bed.
Patent GB-1512537-A (GB)
Title: 2-(2'-aryl-6'-chromonyl) propionic acids and analgesic and anti-inflammatory derivatives thereof
IPC: C07D333/22
Filed: 1975-11-19
Abstract: 1512537 2 - (2<SP>1</SP> - Aryl - 6 - chromonyl)- propionic acids LIPHA LYONNAISE INDUSTRIELLE PHARMACEUTIQUE 19 Nov 1975 [20 Nov 1974 10 Oct 1975] 47707/75 Heading C2C Novel compounds of the Formula I wherein X is phenyl, halophenyl, polyhalophenyl, C 1-4  alkylphenyl, trihalomethylphenyl, aryloxyphenyl, furyl or thienyl and R is hydrogen, C 1-4  alkyl, #-hydroxy- C 2-4  alkyl, morpholinoethyl or dialkylaminoalkyl in which each alkyl group has up to 4 carbon atoms, and where appropriate, salts with pharmaceutically acceptable acids or bases, may be prepared by esterifying a compound of the Formula II with methanol, treating the resulting ester with sodium hydride and ethyl carbonate to produce a compound III α-methylating the malonic acid ester and then hydrolysing and decarboxylating the resulting 2-methyl malonate under acid conditions to yield a compound I in which R is hydrogen optionally followed by esterification and/or salt formation. The intermediates of the Formula III are prepared by converting 2-aryl-6-bromomethylchromone to 2 - aryl - 6 - cyanomethylchromone and hydrolysing the cyano group to the free acid. The 2 - aryl - 6 - bromomethylchromones are prepared either by reacting 5-methyl-2-hydroxy acetophemone with an ethoxycarbonyl substituted aryl group in the presence of sodium hydride to yield a 1-(2-hydroxy-5-methylphenyl)- 3 - aryl - 1,3 - dioxopropane which is cyclized to a 6 - methyl - 2 - aryl - chromone and then brominated or condensing 2-hydroxy-5-methoxymethyl acetophenone with a cheorocarbonyl substituted aryl group in the presence of sodium hydride to yield a 1-(2-hydroxy-5-methoxymethylphenyl) - 3 - aryl - 1,3 - dioxopropane which yields the required compound on cyclization with hydrobromic acid. 5 - Methoxymethyl - 2 - hydroxyacetaphenone is prepared by reacting 5-chloromethyl-2- hydroxy acetophenone with methanol in the presence of hydrochloric acid and iron. Pharmaceutical compositions of the compounds I with the usual excipients show analgesic and anti-inflammatory activity when administered orally or parenterally.