baber/WOPTO huggingface dataset:
Patent GB-1127402-A (GB)
Title: Improvements in or relating to dielectric heating equipment
Inventor: BAZIN RENE EUGENE
IPC: B29B13/02
Filed: 1965-02-26
Abstract: 1,127,402. Dielectric heating. STANDARD TELEPHONES & CABLES Ltd. 24 Feb., 1966 [26 Feb., 1965], No. 8357/65. Heading H5H. Dielectric heating apparatus comprises upper and lower electrodes 1, 2 connected to an r.f. generator 4 and, placed between the electrodes, a banner layer 8 of uniform thickness and having a dielectric constant varying in discrete steps in one direction. Thermoplastic material 6 is bonded or embossed if the top electrode is figured as at 7. The layer 8 is resilient and heat insulating and may comprise several plies including Al foil. The layer and an inductance 13 across the electrodes promote more uniform heating than would otherwise be achieved by the standing wave voltage pattern 14.
Patent GB-1029426-A (GB)
Title: Improvements in and relating to electric stepping devices
IPC: H02K37/00
Filed: 1963-03-01
Abstract: 1,029,426. Electric synchronizing. LICENTIA PATENT-VERWALTUNGS G.m.b.H. March 1, 1963 [March 1, 1962], No. 8364/63. Heading H2L. A stepping device comprises a polarized motor 13 in which incremental rotation is caused by pulses 16 from an electric source, an additional D.C. motor 14 being provided to produce an aiding torque, the motor 14 being controlled by pulses from the same source. A full-wave rectifying bridge 22 has its input connected through capacitor 23 and resistor 24 to the pulse source 16, output from the bridge rendering transistor 21 conductive and transistor 19 non-conductive so that motor 14 exerts maximum aiding torque. When there is no output from bridge 22, the motor 14 is short-circuited through transistor 19, and no aiding torque is applied to shaft 15. In another arrangement, the motor 14 is of the singlephase induction type, the supply to which is controlled by a saturable reactor having its control winding connected to the collector of the transistor 21, Fig. 4 (not shown). In a further embodiment, the aiding torque is provided by a coupling having an eddy current disc mounted on the rotor shaft of the motor 13. A constant speed servo motor rotates a frame of the coupling which carries windings energized in accordance with the pulse rate of source 16, Fig. 5 (not shown). The motor 13 has a four-pole rotor co-operating with four pole-pieces on the stator, the stator and rotor pole spans being similar. North and south poles are alternately arranged on both the stator and rotor. Opposite voltages are applied to the stator windings as a change-over switch is operated, each pulse causing rotation through 90 degrees, Fig. 1 (not shown).
Patent GB-767910-A (GB)
Title: Valve construction
IPC: H01J9/385
Filed: 1955-03-23
Abstract: 767,910. Making electric discharge lamps. SYLVANIA ELECTRIC PRODUCTS, Inc. March 23, 1955 [March 23, 19541, No. 8508/55. Class 39(2) [Also in Group XXIX] A turret machine for electric discharge lamps 1 comprises a number of head assemblies 20, only one being shown, on a spider 22 keyed to a driven shaft 24 mounted horizontally on a table 28 which is part of a base 30; a valve 34 (see also Group XXIX) is disposed on the shaft and consists of a movable plate 42 connected by tubes 38 to a head block 44, and a fixed plate 46 connected by tubes 47 to one or more vacuum pumps and if desired to a source of flushing and or filling gas not shown. Ports in the valve plates provide for continuous communication between each assembly and the source of vacuum or pressure gas without ever permitting intercommunication between any two assemblies. A frame 58 on the base 30 has a pair of arms 70 and 76 which, respectively, support two slip rings 72 engaged by fingers 74 and 75 on the various assemblies 20, and two cam tracks 78 and 80. Each assembly 20 is provided with a base 82 secured to the spider 22 whilst a rod 86 journalled in the base 82 supports a burner plate 88 and a cam follower 94 which rides on the track 80; a spring-loaded sleeve 106 also journalled in the base 82 incorporates an arm 108 on which is a cam follower 110 co-operating with track 78. Levers 182 and 188 are mounted on each block 44 and each plate 88 carries a burner 144 and a lamp supporting cradle 166; the lamp tubulation 7 which projects through the burner 144 and plate 88, enters the block 44 and is hermetically sealed therein by levers 182 and 188.
Patent GB-609636-A (GB)
Title: Variable ratio gear drive
IPC: F16H61/02
Filed: 1946-03-19
Abstract: 609,636. Variable-speed gears. COOMBES, H. C. March 19, 1946, No. 8514. Convention date, Nov. 6, 1945. [Class 80 (ii)] In a, variable-speed gear, driving and driven gears 11, 12 on coaxial driving and driven shafts 6, 13 respectively, are connected through planetary gears 15, 16 on shafts 17 mounted in cage plates 8, 9. Gears 18 also on shafts 17 gear with idlers 19, which in turn mesh with a control gear 20 on a sleeve 21 rotatably mounted on driving shaft 6. A ratchet wheel 22, pawl 23 on a worm-wheel 24, and a worm 25 connected to a brake, not shown, provide variable means to impede or prevent rotation of control gear 20, so that driving shaft 6, cage plates 8, 9, and driven shaft 13, all rotate in the same direction. A lever 34 engaging between collars 35 may be operated to move shaft 6 axially so that dogs 36 on the latter engage in recesses 37 in the driven shaft, thus constituting a direct drive. Pawl and ratchet means may be provided to prevent backward rotation of the cage 8.
Patent GB-211816-A (GB)
Title: Improvements in power plants
IPC: F02B33/02
Filed: 1923-03-26
Abstract: 211,816. Curtis, C. G., and Newton, E. R. March 26, 1923. Motor power plant. -In a. power plant comprising a twostroke internal-combustion. engine charged with precompressed air and a turbine or reciprocating engine to which the exhaust products pass at a pressure substantially above atmospheric pressure, additional exhaust ports 40 in the internal-combustion engine are arranged to be open after the primary exhaust ports 39 and inlet ports 37 have closed and to close when a point in the stroke is reached where engine compression is to begin. Fig. 4 shows a double piston engine and Fig. 6 a single piston engine. The air is prevented from mixing with the burnt gas by arranging the inlet ports to give a -whirl to the air or by means ot a lip 53 on the piston, Fig. 6. The whole internalcombustion engine power may be utilized to drive the compressor.
Patent GB-597948-A (GB)
Title: Improvements in or relating to testing and adjustment of radio systems
IPC: G01R27/32
Filed: 1945-04-09
Abstract: 597,948. Testing wireless receivers. PHILCO CORPORATION. April 9, 1945, No. 8722. Convention date, Oct. 31, 1944. [Class 40 (v)] An arrangement for testing and aligning radio-frequency circuits in a wireless receiver alternately produces a set of test frequencies, each of which is swept over a narrow range corresponding to the receiver pass-band, and a signal sweeping over the full tuning range. The test frequencies are produced by a set of oscillators 9 (Fig. 3) simultaneously frequencymodulated from a phase-shift oscillator 24. The outputs are combined on a line 18 connecting via an attenuator 19 to the receiver 20 under test. The oscillators 9 are rendered alternately operative and inoperative by means of a timing and blanking generator 15, which may comprise an electronic switch. During the blocking period a further oscillator 16 is energized and is swept by a control potential from the generator 15 over the full receiver tuning range. The generator 15 also supplies synchronized sweep potentials over a line 22 to a cathode-ray oscilloscope 21 on which the output of the receiver 20 is displayed. Each of the oscillators 9 comprises (Fig. 4) a balanced modulator 27 in which is combined the output of a fixed frequency oscillator 25 and that of a common variable-frequency oscillator 26. The oscillator 26 is tuned over the desired narrow range by variation of the potential applied to a line 23. The desired frequencies are selected from the output of the modulator 27 by a filter 28, being amplified by a switching amplifier 29 which feeds a common output line 30 and is controlled by the potential applied over the line 31.
Patent GB-1529394-A (GB)
Title: Refrigeration system and a method of reclaiming energy therefrom
IPC: F25B7/00
Filed: 1976-03-04
Abstract: 1529394 Refrigerating CARRIER CORP 4 March 1976 [30 May 1975] 08739/76 Heading F4H A heat pump system comprises a primary cooling circuit 11 having a compressor 15, a precondenser 20, a condenser 21, an expansion valve 25, and an evaporator 16, and a secondary heating circuit 12 having a compressor 35, a condenser 36, an expansion valve 45 and an evaporator 30. The precondenser 20 and the evaporator 30 are in indirect heat exchange contact with one another. The outlet temperature of a liquid medium leaving the condenser 36 via a pipe-line 40 is monitored by a temperature sensor 53 connected to a control regulator 54 for the compressor 35.
Patent GB-526678-A (GB)
Title: Improvements in or relating to inhalers and chemical vaporizers
IPC: A61M16/00
Filed: 1939-03-21
Abstract: 526,678. Vaporizers. HEADLAND, H. W., and HEADLAND, jun., H. W. March 21, 1939, No. 8887. [Class 81 (ii)] An inhaler and chemical vaporizer comprises three superposed chambers within a casing 1 respectively enclosing an electric fan, an electric heater and an evaporating vessel 28. Advantageously, the superposed chambers fit one into the other and are held in position by means of rods 13 secured at their upper ends, to the casing 1 A bottom plate 5 on which the electric fan is mountec and which is providec with apertures 11 is also secured to a flange at the bottom of the casing 1 by means of the rods 13 The fan is controlled by a switch 29 and the elements of the electric heater by means of switches 30. The upper chamber is close( by means of a lid 19 whicl is provided with a fitting 20 to take an air-inlet valve 23 and hose 21. A vapour or gas such as oxygen may be supplied by means of a pipe 34 having a nipple 33. To ensure lightness, the apparatus may be made of aluminium.
Patent GB-609879-A (GB)
Title: Improvements in and relating to fishing reels
IPC: A01K89/016
Filed: 1946-03-22
Abstract: 609,879. Fishing-reels. JORG, T. March 22, 1946, No. 8978. Convention date, March 23, 1945. [Class 48] In a fishing reel having handles 2 and a lever 7 for slow and rapid winding respectively, the lever operates a spring- loaded toothed-sector 8 geared to a toothed wheel 5, fixed to the spool 1, through an intermediate gear 10, 11 on a pivoted link 12. A damping spring 13 contacts the intermediate gear. Release of the lever 7 is followed by disengagement of the gears and rotation of the spool under its inertia. In a modification, the link 12 is pivoted on the axis of the sector.
Patent GB-756211-A (GB)
Title: A wire cutter
IPC: B21F11/00
Filed: 1954-03-29
Abstract: 756,211. Shearing. PETIG, H. March 29, 1954, No. 9036/54. Class 83 (4). A wire cutter comprises a rectilinearly movable blade 4 connected to a hydraulically or pneumatically actuated piston 2 in a cylinder 1 and a fixed blade 7 mounted in a member 6 secured to the cylinder and provided with a lateral U-shaped recess 8 to receive the wire. In a portable manually actuated wire cutter operation of a pump 15 by a lever 19 transfers oil from a reservoir 20 to the cylinder 1 to move the piston 2 to which the blade 4 is detachably secured. The piston 2 is retracted by a spring 39 when a relief valve 35 is opened by depression of a rod 36 by the lever 19. A movable stop 40 normally prevents the lever 19 engaging the rod 36. A carrying handle 42 is provided.
Patent GB-146611-A (GB)
Title: Improvements in or relating to tide-motors
IPC: F03B13/26
Filed: 1919-04-10
Abstract: 146,611. Whitehead, R. J. A. April 10, 1919. Tidal energy, utilizing.-In a tide motor comprising two or more chambers with floating pistons, the valve in one chamber controlling the flow of water is operated by the piston of the other chamber at or near one or both ends of its stroke. In the arrangement of three chambers shown, the piston 2 controls the valves 40, 60 by means of gearing including a rack 20 and pinions 21, 27 containing one-way clutches. The gearing operates in such a manner that one of the pistons 4 and 6, (say piston 4) remains stationary, while pistons 2 and 6 rise or fall with the tide. Near the end of the upstroke of the piston 2, the valve 40 opens and the valve 60 shuts, piston 4 begins to move, and piston 6 remains stationary during the next stroke of piston 2. Continuous motion is thus communicated in any known manner to a main shaft through the piston rods 7, 8 and 9. The Provisional Specification states that the chambers may be formed by locks in the course of a river.
Patent GB-104290-A (GB)
Title: Improvements relating to Rubbing Leathers for Condensing Slivers.
Inventor: MARSDEN ISRAEL
IPC: B24B21/00
Filed: 1916-06-29
Abstract: 104,290. Marsden, I. June 29, 1916. Sliver - rubbing apparatus.-To cause the rubbers A to participate in the longitudinal reciprocation of the rollers B, a guide C carried by the spindles of the rollers acts upon the edge of the rubber. The guide is bored at one end for the spindle b and slotted at the other e n d for the spindle b', and is secured in position by collars c<5>. The guide is at each end c<2> of greater diameter than the roller and extends along the edge of the rubber. The guides are cut away at c' to expose the active faces of the rubbers.
Patent GB-893750-A (GB)
Title: Polymerisation of ethylene
IPC: C08F10/00
Filed: 1959-03-17
Abstract: Anhydrous aluminium chloride crystallites having particle diameters of less than 2 microns are obtained from solutions of aluminium chloride in inert organic solvents (e.g. methyl or ethyl chloride), either by atomising the solution or by addition thereto of non-solvents, such as propane, butane or ethylene.  The aluminium chloride crystallites polymerize ethylene to waxy polymers.ALSO:Ethylene is polymerized to a solid polymer by bringing into contact with finely divided anhydrous aluminium chloride having a crystallite diameter of less than 2 microns.  Polymerization may be batchwise or continuous and may be in bulk or in an inert diluent such as an aliphatic hydrocarbon.  In examples ethylene may be added continuously and polymer recovery may be effected with isobutanol and water.  The products are waxy solids and may be formed into films or moulded articles.
Patent GB-646529-A (GB)
Title: Coaxial amplifiers
IPC: H03F3/54
Filed: 1948-04-02
Abstract: 646,529. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd. April 2, 1948, No. 9308. Convention date, April 19, 1947. [Class 39 (i)] A high-frequency thermionic valve has its anode 2 connected to a cylindrical conductor 9 within a cylindrical sleeve 18, an intermediate cylinder 11 overlapping cylinder 9 to the extent of a quarter of a wavelength, the cylinder 9 having an axially movable sleeve 21 to facilitate exact adjustment. A path of low impedance for high frequency is thus provided between points 23, 25 and feed-back to the anode supply 12 is avoided. The valve is preferably of the disc seal type, the electrodes being formed as cylinders to provide resonators tunable by pistons 15, 16.
Patent GB-1150086-A (GB)
Title: Improvements in or relating to Gas-Cushion Vehicles
Inventor: HUNT ROWLAND DELVILLE
IPC: B60V1/16
Filed: 1965-03-04
Abstract: 1,150,086. Air cushion vehicles. HOVERCRAFT DEVELOPMENT Ltd. 27 May, 1966 [4 March, 1965], No. 9360/65. Heading B7K. In a gas cushion vehicle 11 wherein the vehicle supporting cushion is contained at the sides thereof at least in part by a pair of spaced wall structures 2b depending from the vehicle body 13, each wall structure provides, when the wall deflects from the full to the dotted line position 12, for movement of the effective seal position from position 14 to position 15 along a slope #s (shown in the drawing as # applicable to any peripheral position) which is a function of the beam of the cushion, the height of the centre of gravity of the vehicle above the surface 3 and the desired stiffness in roll and which has a value:- where #s = slope of angle of locus of side seals relative to the plane of the bottom surface of the vehicle body. L<SP>1</SP># = basic roll stiffness, ignoring the effect of cushion end seals due to the movement of the centre of pressure of the cushion and the movement of the centre of gravity expressed as a percentage of the cushion beam for unit roll angle. h = height of centre of gravity of vehicle above surface in feet. b = beam of the cushion in feet. Values are specified also for the movement of cushion end seal positions, total roll stiffness and total pitch stiffness.
Patent GB-808136-A (GB)
Title: Improvements in or relating to high bending strength carbon contact elements for the current collectors of powered electric vehicles
IPC: B60L5/20
Filed: 1956-03-26
Abstract: 808,136. Current collectors for electric vehicles. CONRADTY, E. K., CONRADTY, P., CONRADTY, M., and CONRADTY, C. March 26, 1956 [March 28, 1955], No. 9425/56. Class 104 (3). A carbon contact strip or bow having high bending strength for current collectors of powered electric vehicles with bracing wires d introduced loosely or fixedly with or without pre-stressing is characterized in that a base b of curable plastic such as synthetic resin is applied to the carbon contact strip a. Longitudinal ribs may be formed on the surface of the strip and the wires may be in the surface of the strip or in the plastic base. The wires may be sealed in the strip before the plastic layer is applied.
Patent GB-236672-A (GB)
Title: Improvements in portable talking machines
IPC: G11B17/00
Filed: 1924-04-14
Abstract: 236,672. Columbia Graphophone Co., Ltd., and Mitchell, F. A. April 14, 1924. Cases; driving.-A portable talking machine is provided with a winding crank and handle so connected with the winding spindle that after winding it may be moved to a position such that the handle is substantially within the machine casing, and may be retained by a spring catch or other means. In Fig. 1 the winding crank m is connected by a pivot m<1> to a collar on the winding spindle l, and may be turned about the pivot to the position shown in dotted lines in which the handle n passes into the casing and is retained by a spring catch o. In one modification, the end of the crank is rolled into hinge sleeves engaging a pin on the collar on the winding spindle. In another modification, the crank m, Fig. 3, passes through a bifurcated lug m<3> on the winding spindle ! l and carries a pin l<1> between the bifurcations which permits rotation of the crank to bring the handle n within the casing. The Provisional Specification describes a modification in which the winding handle telescopes into a tubular winding spindle from which it can be withdrawn partially and turned about an intermediate joint into winding position.
Patent GB-1378001-A (GB)
Title: Conveyor belts
IPC: F16G3/00
Filed: 1972-03-01
Abstract: 1378001 Belt fastenings DUNLOP Ltd 12 April 1972 [16 April 1971 1 March 1972] 9676/71 and 9442/72 Heading F2Q A conveyer belt coupling comprises two sets of blocks 1 attached to wires 2 bonded into the ends of belt parts to be joined, and a tie bar formed by plates 3 which are adapted to be clamped over the blocks 1 and having surfaces 5 which are adapted to interengage with surfaces 7 on the blocks 1 when the belt is under tension, the plates 3 being held together by screws 6. The connecting wires 2 may alternatively be replaced by cords, fabric materials (either textile or wire) or flexible perforated metal plates. The interengaging surfaces 5, 7 may (as shown) be 'V' i.e. wedge shaped or, in Figs. 3 and 5 (not shown), cylindrically convex and concave or have locating lugs and corresponding grooves. As shown, the blocks 1 are oppositely arranged in pairs whilst in Figs. 3 and 4 (not shown) the blocks are staggered across the joint (Fig. 4) to reduce the width of the joint. Alternatively in the embodiment-of Figs. 7 and 8 (not shown) the coupling may be prefabricated, the blocks 1 being secured to the connecting wires 2 which are covered with a rubber composition 12 compatable with the belt material. Fig. 9 (not shown illustrates an arrangement in which the coupling is sealed to the belt ends to prevent ingress of foreign matter or corrosive materials into the joint. Various other modifications of this coupling joint are described, e.g. the tie barplates 3 may be flush with the surface of the belt and shaped to a surface contour, i.e. ribbed, of the belt surface, or the tie bar plates may be inset below the surface of the belt and covered by an insert of belting material.
Patent GB-828699-A (GB)
Title: An improved process for the treatment of tubes of iron, steel or iron alloys
IPC: H01J37/32
Filed: 1956-03-27
Abstract: 828,699. Electric glow discharge furnaces. ELEKTROPHYSIKALISCHE ANSTALT B. BERGHAUS. March 27, 1956 [Dec. 19, 1955] No. 9492/56. Addition to 810,802. Class 39(3) [Also in Group II] A process for treating the surface-of tubes of ferrous metals by bombardment with ions of carbon, silicon, or hydrogen, with or without an admixture of nitrogen, the ions being produced by glow discharge as claimed in parent Specification, comprises increasing, at least intermittently, the energy in the glow discharge and at the same time dncreasing the dissipation of heat from the tube. The energy may be increased periodically by increasing the pressure or the voltage. As shown, a tube 20 is supported in a jacket 21 having inlet and outlet pipes 27 and 28 for cooling medium. The ends of the tube 20 are covered by domes 29 and 30 and a counter electrode 31 passes through the tube being supported by insulators 32 and 33 in the domes 29, 30. The treatment gas e.g. nitrogen and hydrogen, or ammonia with ur without admixture with hydrogen or nitrogen, is fed into one dome, through the tube, and out of the other dome, A continuous potential of 400 volts may be applied and have superposed at intervals of 3 to 5 seconds impulses lasting one tenth second and of magnitude ten times that of the continuous potential, the coolant surrounding the tube preventing any increase in temperature. It is stated that the process is particularly suitable for treating the barrels of firearms.
Patent GB-1103073-A (GB)
Title: Gas burner
IPC: F23D14/10
Filed: 1965-03-05
Abstract: 1,103,073. Gas burners. KONINKLIJKE FABRIEKEN DIEPENBROCK & REIGERS N.V. 5 March, 1965 [7 March, 1964], No. 9538/65. Heading F4T. A gas burner has a slotted burner plate 18 provided with a longitudinally extending portion 20 pressed into the form of a segment of a cylinder, the slots extending across the cylindrical portion such that the planes tangential to the cylindrical segment at the ends of the burner slots enclose an angle α of less than 180 degrees with the adjacent horizontal plane of the burner plate. The vector 24 representing the velocity of the incoming secondary air has a component 25 in a direction opposite to the exit direction 26 of the gas-air mixture, and the resultant outflow velocity of this mixture is reduced thereby also reducing the tendency of the flame to blow-off. The burner comprises a gas inlet 9, primary air apertures in a portion 10 of a mixer tube 4, diffuser 11, and gas distributer 13 formed with vertical slots 16. The gas-air mixture leaving these slots is uniformly distributed to the burner plate through an apertured top of the burner tube 1.
Patent GB-1337889-A (GB)
Title: Phenothiazine derivatives
Inventor: FARGE D
IPC: C07D279/18
Filed: 1972-03-01
Abstract: 1337889 Phenothiazines RHONE-POULENC SA 1 March 1972 [3 March 1971] 9564/72 Heading C2C Compounds of the general formula (R 1 =H, Me, Et) are prepared by reacting 2,5- dihydroxythiophenol with an acid of the formula (X=reactive ester residue), reducing the nitro group in the resulting [3-nitro-4-(2,5-dihydroxyphenylthio)phenyl]alkanoic acid to an amino group, oxidizing the product to the corresponding quinone which cyclizes spontaneously to a 7-oxophenothiazinylalkanoic acid, and reducing the latter. The acids may be converted to esters of the formula R = C 1-4  alkyl by reaction with RY (Y = reactive ester residue).