baber/WOPTO huggingface dataset:
Patent GB-1115029-A (GB)
Title: Improvements relating to battery-charging installations
Inventor: HOBBS EDWIN DANIEL
IPC: H02J7/16
Filed: 1965-06-02
Abstract: 1,115,029. Battery charging systems. J. STONE & CO. (DEPTFORD) Ltd. 2 May, 1966 [2 June, 1965], No. 23536/65. Heading H2H. [Also in Division G3] A battery-charging installation comprises an A.C. source such as an alternator 1 which supplies a battery 2 over a rectifier 4 and another load 3 over a separate rectifier 5, the alternator 1 being controlled by a field regulator 6, e.g. of the saturable reactor or transistor type, having a single control winding to which are applied, in parallel, three control voltages, the regulator responding solely to that one voltage which is the largest at the time. One control voltage is the battery voltage which is applied directly to the regulator 6 by way of leads 7; another is dependent upon the alternator output current and is applied to the regulator by way of a transformer 9 and a rectifier 12; the third control voltage is dependent upon the battery charging current, and is derived from a transformer 8 and a rectifier 11. A blocking diode 13 permits the battery to discharge into the load 3 but prevents the battery from being charged through the load rectifier 5. The arrangement is such that control at constant voltage is superseded, at a predetermined value of current, by constant current control, so that the alternator is protected against excessive output current and the battery against excessive charging current. Compounding to effect drooping generator and battery-charging characteristics may be introduced by the provision of a transistor, acting as a variable resistance in a voltage divider associated with the battery 2 (Figs. 2, 2a, not shown). The battery 2 and the load 3 may be supplied through a common rectifier, the current signal to the regulator being derived by way of a transformer/rectifier circuit connected across the A.C. windings, in the alternator output circuit, of a saturable choke whose control winding is arranged to carry the current supplied to the load 3 but not the battery-charging current. The source of A.C. may be the mains supply, in which case the regulator 6 is arranged to control an input from said supply.
Patent GB-518870-A (GB)
Title: Improved method and means of operating machine guns with miniature cartridges for instructional purposes
IPC: F41A33/00
Filed: 1938-08-10
Abstract: 518,870. Machine guns. PARKER-HALE, Ltd., and HALE, S. C. Aug. 10, 1938 No. 23543. [Classes 9 (i) and 92 (ii)] A gas-operated machine gun is,adapted for practice fire with miniature ammunition by providing the barrel 6 with a sub-calibre tube 12 and feeding the gun with carrier cartridges 55, Fig. 4, for the sub-calibre ammunition 54, the gun being operated by gas pressure from an external source applied to the gas piston. In the arrangement shown, gas pressure from a bottle 29, Fig. 3, is applied to the gas piston 10 past a valve 20 which is automatically opened on the return movement of the gas piston by a member 46 thereon. The normal gas port 15 is closed by the practice tube 12 and a special chamber 16 is attached as shown to the gun barrel 6 and gas cylinder 9. The chamber contains the spring-pressed ball valve 20 for admitting pressure .air to the gas cylinder through a pipe line 28 which leads from the bottle 29 through a reduction valve 39. The gas piston 10 is mounted with play, upon its rod 11 and moves under the initial pressure impulse against the action of a spring 51 into engagement with the flange 49 to seal the channel 53 through which the air escapes on the return movement of the' piston. The valve 20 is opened automatically by the stem 46 each time the piston completes its forward movement under the action of the return spring of the gun, provided that the gun trigger is kept pressed. The reducing valve 39 is controlled by a diaphragm 41 subjected to the action of an adjustable spring 42. Fig. 4 shows the cartridge carrier member 55 for miniature ammunition 54 used in conjunction with the practice tube 12. The carrier is adapted for rim fire ammunition by the provision of a sliding plug 61 which is actuated by the normal striker 47 of the gun. The plug is retained by a spring pin 65 engaging an elongated slot 59 in the carrier. The cartridge carriers 55 are fed to the gun from a magazine in the usual manner.
Patent GB-1351019-A (GB)
Title: Gas lasers
IPC: H01S3/10
Filed: 1971-04-19
Abstract: 1351019 Lasers HEWLETT-PACKARD CO 19 April 1971 [24 Feb 1970] 23816/71 Heading H1C A gas laser is frequency stabilized throughout the temperature change which occurs after switching on by a system which keeps the resonator mirror spacing constant as the laser body expands. In Fig. 1 mirrors 20 and 56 are mounted at opposite ends of the bore through body 24; mirror 56 is attached to this body by piezoelectric disc 42 so that the mirror spacing may be varied electrically. A control circuit 68 gives a signal which alters the spacing so as to maintain equal the intensity of the left and right circularly polarized outputs produced by a coil or magnet 60a, 60b, 60c around the discharge bore 26. The discharge is produced by anode 12 and cathode 32. The latter is a hollow annulus connected to ground by a pin 14 passing through the envelope of the laser and by spring contact 36. The cathode is held in position by a spring 30-30c which also serves to electrically connect the cathode to a metal layer 48 on body 24, and thence to one contact of the piezoelectric disc. The other contact of the disc is connected to the control circuit 68 by spring 50 and contact 16. Radiation for the control circuit passes inside spring 50 and through window 10h as shown at 66. Suitable materials for the components of the laser are given; with these materials the warm up temperature range of 50 C. is countered by charging the potential across the piezoelectric disc from zero to some 1200 volts. A similar arrangement using a metal outer envelope to support the laser components is described, Fig. 2 (not shown). In both embodiments the mirrors may be held in place by the pressure difference between the discharge region and the ambient atmosphere rather than by the spring of Fig. 1.
Patent GB-783785-A (GB)
Title: Improvements in or relating to the production of laminated sheet materials
Inventor: BERRY WILLIAM
IPC: B32B27/00
Filed: 1954-08-16
Abstract: An aqueous copolymer dispersion, suitable on cooling as an adhesive for joining dry regenerated cellulose films, is formed by heating together at 40 DEG  C. until polymerization is complete a mixture comprising by weight 94 parts vinylidene chloride, 6 parts methyl methacrylate, 1 part itaconic acid, 1 part sodium salt of condensation product of naphthalene sulphonic acid and formaldehyde, 0.5 part long-chain alkyl aryl sulphonate, 0.6 part ammonium persulphate, 0.3 part sodium metabisulphite, and 150 parts distilled water.
Patent GB-597970-A (GB)
Title: Improvements in or relating to gas governors
IPC: F16K31/10
Filed: 1945-09-17
Abstract: 597,970. Fluid-pressure servomotorcontrol systems. METERS, Ltd.. BARNES, H. V., and MITCHELL, H. H. Sept. 17, 1945, No. 23912. [Class 135] In, e.g. a gas governor of the kind described in Specification 596,168, in which a butterfly vaive b in a gas main is controlled by a pilot valve a, actuated through a lever r by a diaphragm a<1>, the diaphragm is variably loaded by a chain d normally stored on a fixed platform k, but which is fed on to, or removed from, a floating platform c by an electrical impulse motor controlled by remote pushbutton switches o. The motor comprises a pair of electromagnets h, i, having armatures l actuating pawls m which engage a pawl wheel j fixed to a chain wheel e. The motor rotates the chain wheel stepwise in either direction as one or other of the electromagnets h, i is energized, stops (not shown) being provided for limiting the rotation of the chain wheel, whilst a spring brake engages the pawl wheel to prevent the chain wheel from over-running in the event of an undue preponderance of chain on one side. The fixed platform k may be replaced by a platform on the lever r on the opposite side of its fulcrum from that of the platform c, so that weight is applied to the lever on one side of its fulcrum, simultaneously with its being removed from the other side.
Patent GB-374701-A (GB)
Title: Improvements relating to transmission gearing for actuating the valves of locomotiveengine cylinders
IPC: F01L31/16
Filed: 1931-08-25
Abstract: 374,701. Lubricating by mechanical means. LINDARS, H., 54, Victoria Street, London. Aug. 25, 1931, No. 23913. [Class 12 (iii).] An oil-containing casing g for the bevel gear conveying motion from a driving axle a to the valve-operating shaft of a locomotive is provided with a gutter j carrying stripper plates m extending close to the periphery of the bevel wheel b, so that when the bevel wheel rotates one or other of these plates, according to the direction of rotation, will collect oil from the wheel and conduct it to the gutter. The oil passes from the gutter through passages n to bearings o through which the axle a passes. Oil escaping from the outer ends of these bearings is caught in spaces p from which it returns to the sump through passages q. As a further guard against escape of oil bushes r rotating with the axle are provided with flanges s lodged in recesses in end-plates t, these recesses communicating with the spaces p.
Patent GB-1042778-A (GB)
Title: Improvements in or relating to reversible gear pumps and motors
Inventor: BURCH EDWARD JOSEPH WILLIAM
IPC: F04C14/26
Filed: 1964-06-09
Abstract: 1,042,778. Gear pumps and motors. B. & G. HYDRAULICS Ltd. June 9, 1965 [June 9, 1964], No. 23940/64. Heading F1F. A gear motor (or pump) comprises a number of pinions 21, Fig. 1, rotatable on fixed spindles 20 and positioned between a control gear 11 splined to a drive (or driven) shaft 10 and a ring gear 22. The spindles 20 are carried in an annular pressure pad 19, Fig. 2, stepped on its outer and inner peripheries to provide with corresponding steps on a casing part 14 and an annular pad 9 surrounding the shaft 10 annular pressure chambers 29, 30, 29a, 30a communicating through passages in the pressure pad 19 with diagonally disposed inlet ports 37, 38 and diagonally disposed outlet ports 39, 40 opening into chambers in which the pinions rotate. Each spindle 20 is formed with a transverse relief passage 24 and an axial relief passage 25 which opens at one end through a passage, 32 with a chamber 33 surrounding the ring gear 22 and at its other end through passages 26, 34 with chambers 35, 36 surrounding the shaft 10. The passage 26 is connected by cross passages 27, 28 each provided with a pressure relief valve (not shown) with the annular pressure chambers 29, 29a and 30, 30a respectively so that it is relieved into the annular chambers at pressure lower. In operation as a motor, working fluid is supplied to one of the supply passages in the casing part 14 and passes into the annular pressure chambers 30, 30a to press the pad 19 which is freely movable into sealing engagement with the pinions, control and ring gears. Pressure fluid also passes through passages 37a, 38a and inlet ports 37, 38 into the pinion chambers to rotate the pinions which intermesh with the control and ring gears to drive the shaft 10. The pressure fluid afterwards escapes through the outlet ports 39, 40 and passages 39a, 40a to exhaust. The operative surfaces of the annular pressure chambers and the chambers within which the pinions rotate are arranged so that should excess pressure occur within the latter the annular pressure pad will move to allow fluid to escape across the faces of the gear wheels to prevent damage to the motor (or pump).
Patent GB-1456513-A (GB)
Title: Derivatives of cyclopentaneacetic acid
IPC: C07D257/04
Filed: 1973-11-07
Abstract: 1456513 Cyclopenta[b]furan derivatives PFIZER Inc 7 Nov 1973 [8 Nov 1972] 23950/76 Divided out of 1456512 Heading C2C The invention comprises cyclopenta[b]furan derivatives of the Formulµ III, IV and V wherein Ar is 3,4-dimethoxyphenyl, 3,4-methylenedioxyphenyl, 3,4,5 - trimethoxyphenyl, 1- or 2-naphthyl or phenyl optionally monosubstituted by halogen, trifluoromethyl, phenyl C 1-6  alkyl or C 1-6  alkoxy; m and n each are 0 to 3 with the proviso that the sum of n and m does not exceed 3; Q is p-biphenylylcarbonyl; Z is a single or trans-double bond; R is H or C 1-6  alkyl; Q<SP>1</SP> is H or p-phenylylcarbonyl; and Y is oxo, with the proviso in compounds of Formula IV that when R and Q<SP>1</SP> are both H, Z is a trans double bond, n and m are 0, Ar is 3,4-methylenedioxyphenyl, 3,4,5 - trimethoxyphenyl, 1- or 2-naphthyl or biphenylyl; and with the proviso in compound of Formula V that when R is H Z is a trans double bond, m and n are 0, Ar is as defined immediately above; and their preparation. The compounds are obtained by known methods used to obtain analogous compounds.
Patent GB-265881-A (GB)
Title: Improvements in and relating to shifting mechanism for gears, dental clutches and the like
IPC: F16H63/38
Filed: 1925-08-26
Abstract: 265,881. Ahlm, C. E. F. Aug. 26, 1925. Controlling variablespeed gearing in an auxiliary two-speed gear upon a vehicle. As shown in Fig. 1, a splined member 11 fast on a driven shaft 3 is connected through a sleeve 7 to a toothed member 10 fast on a driving-shaft 2, yielding a direct drive. The sleeve 7 in moving to the right, passes through a neutral position, and then picks up clutch teeth 25 driven at reduced speed through a non-epicyclic eccentric train P, P<1>, P<2>. <p3> from the shaft 2. The sleeve striker fork 53 is integral with a carriage 52 slidable on a guide bar 50. A control lever 65 has a ball end 67 engaging in a head 60 slidable within the carriage 52 and normally held in mid position by two springs 63. A spring-pressed pointed plunger 34, Fig. 4, is adapted to engage the side of the carriage, which is formed with two angular recesses 55, 56 joined by a wedge point or edge 57. When the control lever 65 is actuated, one of the springs 63 and the spring 36 of the plunger 34 are compressed. When the wedge edge 57 passes under the plunger edge, these springs expand and shoot the carriage over, carrying the sleeve 7 to its extreme or gear position. It is thus impossible to leave the twospeed gear in undesired neutral. To facilitate the shifting of the sleeve 7, the ends of the teeth of the clutch ring 25 are preferably staggered, alternate teeth projecting, as shown in Fig. 2, and alternate teeth of the shifted ring of clutch teeth 8 upon the sleeve are omitted.
Patent GB-1021148-A (GB)
Title: Racquets for tennis, badminton, squash or like games
IPC: A63B49/08
Filed: 1963-06-17
Abstract: 1,021,148. Racquets. J. R. LACOSTE. June 17,1963 [June 19,1962], No. 24038/63. Addition to 955,732. Heading A6D. A games racquet comprises a resilient, indented, annular member 17 attached by binding 18 to the inner periphery of the frame of the racquet for the attachment of stringing thereto, the indentations being shaped mainly as shown at 19 but in some zones of the member being shaped as at 20 for the purpose of rendering the stringing mesh uniform.
Patent GB-440631-A (GB)
Title: Improvements in or relating to bicycle-stands
IPC: B62H1/00
Filed: 1935-08-28
Abstract: 440,631. Bicycle supports. KIRCHHOFF, F., Schnathorst, near Lohne, Westphalia, Germany. Aug. 28, 1935, No. 24040. [Class 136 (i)] In a bicycle support of the type which is pro - vided with laterallyspaced ground-engaging legs and is pivoted so as to swing upwards in the longitudinal plane of the cycle into an inoperative position, the support is also pivoted so that it can be swung transversely and secured in any angular position, according to the transverse slope of the ground. The support proper, comprising spaced legs c, swings transversely about a pivot f on a member e, which is mounted on transverse pivots p in a casing a secured to the chain stay near the crank bracket, the support swinging back about the pivots p from the operative to the inoperative position under the action of a tension spring d when the cycle is pushed forward. The spring d acts on an extension g of the support c, and the lower end k of the spring is adapted to engage one of several notches i in an extension h of the casing a in order to retain the support c in laterally-adjusted position.
Patent GB-664011-A (GB)
Title: Improvements in or relating to ventilating fans
IPC: F04D29/64
Filed: 1949-09-19
Abstract: 664,011. Screw fans. DAVIDSON & CO., Ltd., and MACFARLANE, D. Sept. 19,1949, No. 24053/49. Class 110(i) In a ventilating unit comprising a fan unit pivotally mounted on trunnions within a casing so that it can be turned relative to the casing. through an angle of 180 degrees about an axis transverse to the axis of the fan unit and casing, the casing is provided with one or more doors to allow the fan unit to be turned. The fan unit, Figs. 1 and 2, comprising a motor 10 and impeller 12, is mounted on trunnions 24 pivoted in bearings 25. The unit is secured in either of its two positions by a locating ring 27 which is fixed to one trunnion 24 and carries a bolt which engages one of two diametrically opposed sockets 29. Current is supplied to the motor cable 33 by way of slip rings 32 contacted by stationary brushes. Alternatively, a flexible cable is used. The fan casing 14, which has flanged ends 15 for bolting to the ducts of a ventilating system, has hinged doors 19 which are opened as shown when a reversal is to be made. Alternatively, the doors may slide longitudinally. In a modified construction (not shown), the trunnions 24 are located nearer to the tip of the motor fairing 11, so that the latter swings entirely within the casing 14 when a reversal is being made, so that only one door 19 is required. Fig. 5 shows an embodiment in which two contra-rotating impellers 39, 40 are driven by separate motors 36, 37 mounted in a common carcase 38. A bearing bracket 41 may be integral with or attached to the trunnions 24 and/or the carcase 38.
Patent GB-870557-A (GB)
Title: Improvements in or relating to optical device
IPC: B64F1/20
Filed: 1958-07-25
Abstract: 870,557. Visual landing aids for aircraft. BURROUGHS CORPORATION. July 25, 1958 [July 25, 1957], No. 24071/58. Class 118. [Also in Group XI] A visual landing aid for aircraft comprises a plurality of optical systems arranged in a substantially vertical array and a horizontally-disposed reference marker adjacent thereto, each optical system comprising a lens and a light source arranged within the focal distance of the lens and the optical system being so arranged that the axes of the beams of adjacent systems diverge in the vertical plane, that of the uppermost system being at a steeper angle and that of the lowermost system being at a shallower angle than the desired glide plane, whereby the pilot of an approaching aircraft sees a virtual image of one of the light sources whose position relative to the reference marker indicates his angular position with respect to the desired glide plane. As shown in Fig. 2B, the reference marker comprises a plurality of lamps 20, the apparent position of the image 25b as seen by the pilot of the approaching aircraft indicating in this instance that the aircraft is above the glide plane. The vertical array of optical systems is mounted as an assembly 30, a lenticular spreader 60, Fig. 5, being arranged in front of the optical system to spread the image out into a horizontal band. The assembly 30 comprises five optical systems, each comprising a fresnel lens 50 and four lamps 40, lying along a horizontal arc conforming with the curvature of the field of the lens 50. The different optical systems are all so arranged, either by inclination of the axes of the lenses 50 or by displacement of the lamps 40 therefrom that the virtual images produced thereby all coincide. Hence an observer in front of the array sees only one image, whose position with respect to the array appear to depend on his angular disposition with respect thereto. The vertical positions of the filaments of the lamps may be individually adjusted by screws 68 and when the apparatus is to be used on an aircraft carrier the lamps are all mounted on a common support which may be moved vertically by a gyroscopically controlled motor 43 for stabilizing the beams of the optical systems. When the support moves vertically cam followers 64 move over corresponding cam surfaces 66 to alter the spacing between the corresponding lamps 40 and lenses 50 in accordance with the curvature of the field of the lenses. The inclination of the array in the vertical plane may be adjusted by hand wheel 39 operating through gearing 38; alternatively the gyroscopic stabilizing means may operate on gearing 38 in which case motor 43 may be dispensed with. Specification 758,273 is referred to.
Patent GB-1385503-A (GB)
Title: High tenacity phenolic resin fibres
IPC: C08L61/10
Filed: 1972-05-23
Abstract: 1385503 Phenolic resin fibres CARBORUNDUM CO 23 May 1972 [1 June 1971] 24098/72 Heading B5B An infusible cured phenolic resin fibre is subjected to sufficient longitudinal tension to cause at least 30% permanent elongation, whereby its tenacity and Young's modulus of elasticity are improved. The cured phenolic resin may be a cured novolac, and the phenolic hydroxyl groups of the resin may be unblocked or blocked, suitably to the extent of at least 50%. The fibres are made by melt-spinning, and may be cured in a solution of paraformaldehyde and hydrochloric acid. Blocking may be effected by acetylation in a mixture of acetic anhydride and concentrated sulphuric acid, and before subjection to tension the fibres may be swelled by a polar organic liquid, e.g. dimethylformamide, in which the fibres may be immersed during stretching. Stretching may be carried out at temperatures up to 200‹ C. Fibres so made have a tenacity of at least 4 g/den.
Patent GB-944625-A (GB)
Title: Improvements relating to rotary scrapers for sedimentation tanks
Inventor: HARTLEY AUGUSTINE JOSEPH
IPC: B01D21/06
Filed: 1961-07-06
Abstract: 944,625. Gravity-separation apparatus. HARTLEYS (STOKE-ON-TRENT) Ltd. July 5, 1962 [July 6, 1961], No. 24392/61. Heading BID. A ring 20, Fig. 2, to which scrapers 42 and chains 43 are attached, is of circular section and is driven by rollers 29, 37, Fig. 4.
Patent GB-1127347-A (GB)
Title: Manufacture of diaminodiarylmethanes
Inventor: HALL JOHN ALWYN
IPC: C07C209/68
Filed: 1966-06-01
Abstract: 1,127,347. Diaminodiaryl methanes. IMPERIAL CHEMICAL INDUSTRIES Ltd. 23 May, 1967 [1 June, 1966], No. 24453/66. Heading C2C. Diaminodiaryl methanes are obtained when a polyaminopolyaryl methane containing more than two amino groups and more than two aryl nuclei is heated with the corresponding primary aromatic amine and a hydrohalide thereof. The process is particularly applicable to the mixture of diaminodiaryl methanes and higher polyaminopolyaryl methanes obtained by treating a primary aromatic amine with formaldehyde under acid conditions, and is exemplified by reference to the treatment of the mixture of diaminodiphenyl methanes and higher polyaminopolyphenyl methanes obtained by reacting aniline with formaldehyde in the presence of hydrochloric acid. This mixture is treated with aniline and an aniline hydrohalide, preferably at 150-250‹ C. and optionally under pressure, with or without preliminary removal by distillation of the diaminodiphenyl methanes (mostly 4,41-diaminodiphenyl methane) also produced in the reaction. The product contains more 2,41-diaminodiphenyl methane and less 4,4<SP>1</SP>-diaminodiphenyl methane than the product of the initial aniline-formaldehyde reaction.