baber/WOPTO huggingface dataset:
Patent GB-1220618-A (GB)
Title: Improvements in or relating to rotary follow-up apparatus
IPC: F16C21/00
Filed: 1968-04-24
Abstract: 1,220,618. Weapon mountings. MESSERSCHMIDT - BOLKOW - BLOHM G.m.b.H. 24 April, 1968 [25 April, 1967], No. 19386/68. Heading F3C. [Also in Divisions F2 and G2] In a rotary follow-up apparatus, viz. an apparatus such as a weapon or camera rotatably mounted so that the user can keep a line of sight trained on a moving object, the follow-up movement is damped by a frictional damper in which at least one of the frictional surfaces is of polytetrafluorethylene. At and above a critical velocity of relative movement over a P.T.F.E. surface, the coefficient of dynamic friction is substantially constant; below this velocity the coefficient rises with velocity. In the present application, the velocity will be subcritical in use, so that starting movement is not resisted but more rapid movement is damped. Fig. 1 shows the follow-up apparatus 10 rotarily mounted on a fixed support 7 by means of a bearing assembly 14. The relatively sliding surfaces 15, 17 carry respective ring inserts 16, 18, Fig. 2, which are in mutual contact and consist respectively of polished steel and P.T.F.E. The steel ring may be P.T.F.E. coated, e.g. by P.T.F.E. molecules " picked up " from the P.T.F.E. ring. The bearing. Fig. 4, is a self-adjusting cone bearing incorporating balls. In Figs. 5 and 6 (not shown), the P.T.F.E.-containing sliding bearing (34) corresponding to the sliding bearings 15, 17 of Figs. 1 and 2 is itself a selfadjusting cone bearing but without balls.
Patent GB-1383970-A (GB)
Title: Method of producing hologram arrays
IPC: G03H1/28
Filed: 1972-04-26
Abstract: 1383970 Hologram array PLESSEY CO Ltd 9 March 1973 [26 April 1972] 19404/72 Heading G2J A hologram array 6 having high diffraction efficiency and coincident reconstructions (thus enabling a single photo-detector to be used for read-out) is made by first forming a hologram 1 containing the information and spaced points 1a-c, illuminating this by read-out beams 3-5 and producing the second hologram 6 through lens 2 so that when read-out by parallel read-out beams anti-parallel to the reference beams (only one, 7, shown) coincidence of all margins is achieved at 8. The photo-detector may be displaced somewhat from 8 to enable lens 2 to be one having positional optics as explained in the Specification.
Patent GB-368179-A (GB)
Title: Method for destroying moths and their eggs in furs
IPC: A01N59/22
Filed: 1931-07-06
Abstract: A preparation to be applied to the leather side of furs so as to penetrate to the hair side to destroy moths and their eggs and to prevent mildew, consists of arsenic, green soap, common salt, water and methylated spirit, The prior use of a similar mixture, but without methylated spirit, to be applied to the hair side of a fur, is referred to.
Patent GB-470940-A (GB)
Title: Improvements in gas turbines
IPC: F23R3/30
Filed: 1936-07-13
Abstract: 470,940. Gas turbines. COUZINET, R. A. A. July 13, 1936, No. 19428. Convention date, July 17, 1935. [Class 110 (iii)] A turbine is fed by a nozzle or nozzles 20 from a combustion chamber 1 through an intermediate chamber 18; the combustion chamber has thin walls of rustless material and no refractory material is employed in its construction. An inlet 2 is arranged axially at the end of the chamber 1, and sparking plugs 4 are attached by screw rings 3. The chamber 1 has a polished outer surface and is arranged coaxially in a casing 6 which has a thin wall internally polished, and has a tube 8, Fig. 1, at its rear part for the admission of secondary air. The air is drawn in by the suction effect of the gases issuing from the combustion chamber, or may be forced in by a compressor. One or more deflecting walls 9 ensure a uniform distribution of the air in the space between the walls 1, 6. The external wall of the combustion chamber has ribs 12 which assist in keeping the chamber centred, and some of them extend past the narrow part 1b of the chamber. The entry tube 2 is screwed into an opening in the wall of the atomizing chamber 11 which contains a grid 35 for the passage of air admitted by the pipe 28 and fuel admitted by the pipes 26. The casing 6 is connected to a converging conduit 16 forming a mixing chamber, followed by a diverging conduit 17 attached to a nozzle 17a which directs the gases against a deflector 19 at the end of the chamber 18 remote from the nozzles 20. The outer casing 6 has ribs 23 formed by making longitudinal grooves in the casing and they may be covered with heat insulating packing. The fuel admitted by the pipes 26 enters an annular chamber 25 from which it passes into the main air stream through non-radial perforations in the wall 11. The perforations are distributed along a helix, the pitch of which may be constant or progressively variable.
Patent GB-430062-A (GB)
Title: Improvements relating to power transmission belting
IPC: F16G1/28
Filed: 1934-07-02
Abstract: 430,062. Driving-belts. WINGFOOT CORPORATION, 1144, East Market Street, Akron, Ohio, U.S.A. July 2, 1934, No. 19450. Convention date, Nov. 3, 1933. [Class 80 (i)] A driving-belt comprises a pulley-engaging part forming the principal tension element, and a wider belt-shifter-engaging part constructed to minimize wear of its edges. In the form shown, the contact side B of the belt comprises cords 11 and the outer side heavy square-woven bias-cut fabric 10, the whole being covered with a lighter bias cut fabric 13 overlapped at 17 on the contact face. The cord and fabrics are impregnated with rubber, and in addition the fabrics are covered with a skin-coating of rubber during manufacture. The belt is vulcanized after assembly.
Patent GB-957998-A (GB)
Title: Variable microwave phase shifter
IPC: H01P1/18
Filed: 1962-05-21
Abstract: 957,998. Waveguide phase - shifters. HUGHES AIRCRAFT CO. May 21, 1962 [Sept. 29, 1961], No. 19479/62. Heading H1W. A microwave phase-shifter comprises a transversely-movable longitudinal array of reactive elements. As shown, the elements consist of conductive cylinders 12 mounted upon a beam 14 which may be cast integrally with the cylinders. The cylinders increase uniformly in height to a maximum at the centre of the array and are spaced apart by a quarter-wavelength at the operating frequency, this spacing being physically less at the centre of the array than at the extremities because of the increase in height of the cylinders. The array is mounted upon conductive or dielectric rods 15, 16 and a lead screw 30 whereby the position of the array may be varied between the centre of rectangular guide 20, where it provides a phase lag, and one of the side walls 21, 22, where it provides a phase lead. In a modification (Fig. 6, not shown), the array is mounted within a circular waveguide. The H 11  mode propagated in the circular guide is orientated to provide an electric field parallel to the axes of the cylinders. The invention may also be applied to elliptical waveguides.
Patent GB-1178064-A (GB)
Title: Halogen-Substituted Alkenyloxy Aromatic Compounds and Resin Compositions Containing Halogen-Substituted Alkenyloxy Aromatic Compounds
Inventor: EVANS ANTHONY JOHN
IPC: C08F2/44
Filed: 1967-04-27
Abstract: 1,178,064. Alkenoxy-substituted aromatic bromides. MONSANTO CHEMICALS Ltd. 19 March, 1968 [27 April, 1967], No. 19492/67. Heading C2C. [Also in Division C3] The invention comprises haloaromatic compounds wherein an aromatic ring is substituted by at least one bromine atom and at least two alkenyloxy groups, each alkenyloxy group being in ortho or para relationship to a bromine atom are prepared by reacting the corresponding hydroxy aromatic compound or a salt thereof with an alkenyl halide. The preparations of 1,4 - bisallyloxy - 2,3,5,6 - tetrabromobenzene, 1,3 - bisallyloxy - 2,4,6 - tribromobenzene and 1,2 - bisallyloxy - 3,4,5,6 - tetrabromobenzene are exemplified. The novel compounds are used as flame retardants for synthetic resins, e.g. polystyrene.
Patent GB-1390369-A (GB)
Title: Pharmaceutical compound preparations with bactericidal action
IPC: A23K20/195
Filed: 1972-04-27
Abstract: 1390369 Pharmaceutical compositions CIBA-GEIGY AG 27 April 1972 [29 April 1971] 19568/72 Heading A5B A composition suitable for use in a pharmaceutical or veterinary preparation, or for an animal feed or additive to animal feed, comprises 1) a bactericidally active rifamycin compound and 2) a bactericidally active nitrofuran compound. The rifamycin compound is suitably a semi-synthetic derivative of rifamycin SV or S and the nitrofuran compound is suitably a 5-nitrofuran derivative. Preferred compounds include rifampicin, nitrofurantoin, furazolidone and furaltadone, but many others are specified. The compositions may be for oral use or in the form of suppositories or ointments.
Patent GB-201920-A (GB)
Title: Improvements relating to objectives for the taking of photographic views and for other purposes
IPC: G02B13/20
Filed: 1923-07-31
Abstract: 201,920. Polack, A. Aug. 1, 1922, [Convention date]. Drawings to Specification. Lenses.-Objectives not corrected for colour but in which the focal chromatism is increased are used with ortho or pan-chromatic plates to produce images in which perfection of outline and detail is not required. Optical data for a number of such objectives are given in the Specification.
Patent GB-554714-A (GB)
Title: Improvements relating to the supply of charged magazines to machine guns and to the removal of empty magazines
IPC: F41A9/34
Filed: 1939-07-05
Abstract: 554,714. Machine gun magazine-feed. BAKER, C. W., and BOULTON PAUL AIRCRAFT, Ltd. July 5, 1939, No. 19625. [Classes 92 (i) and 92 (ii)] Drum magazines 16 are fed to heavy machine guns 32, more especially aircraft guns, by a poweroperated lever 10 which raises the magazines from a supply position along guide rails 30 to the gun breech, the empty magazines, when released from the gun falling along additional guide rails 52 to a position 54 clear of the supply. Side pins 24, 26 on the magazines engage and move aside on the upward journey pivoted spring-pressed switch-levers 44 which return to provide a guide to the rails 52 on the return of an empty magazine. Laterally-curved surfaces 54 serve to roll the empty magazines to one side clear of the lever 10. Slots 38 in sector plates 36 fast with the gun trunnions 42, and a fixed arcuate guide surface 40, ensure the supply and release of the magazines at a predetermined gun loading angle. Specification 525,336 is referred to. Reference has been directed by the Comptroller to Specification 558,519.
Patent GB-240415-A (GB)
Title: Improvements in apparatus for cooling oil vapours
IPC: F28D7/16
Filed: 1925-08-04
Abstract: 240,415. Griscom-Russell Co., (Assignees of Price, J.). Sept. 29, 1924, [Convention date]. Surface condensers; rectifiers.-An apparatus for the fractional condensation or dephlegmation of oil or other vapours comprises a series of superposed condensers having cooling tubes 15 connected to floating headers 10 at one end and divided headers 11, 12 at the other for entry and discharge of the cooling medium which may be water or fresh oil on its way to the still. The vapours pass upwards or downwards through the series in divided paths formed by the double connections 13. Horizontal baffles 16 are placed among the tubes that give an elongated path. The vapour outlets may be arranged above the base of the condensers and the condensates discharged from the base so as to obtain a series of fractions.
Patent GB-808209-A (GB)
Title: Improvements in or relating to means for controlling the amplitude of vibration of an electromagnetically maintained tuning fork vibrator or the like
Inventor: GALL DONALD CRISP
IPC: H03B5/30
Filed: 1955-07-07
Abstract: 808,209. Automatic vibration amplitude control systems. TINSLEY, H., & CO. Ltd. Oct. 8, 1956 [July 7, 1955], No. 19679/55. Class 38 (4). [Also in Groups XXXVII, XL (b) and XL (c)] When the vibration amplitude of an electromagnetically maintained tuning fork exceeds a preset value, contacts are closed which, by electronic means, reduce the energy supplied to the electromagnetic means. In one embodiment, Fig. 6, a small magnet 17 fixed to one limb of the fork (Fig. 5, not shown) vibrates within a coil 18, inducing in it a sinusoidal voltage. This voltage is passed through a two-stage amplifier 19, the output stage being biased such that only halfwave positive pulses are passed to valve 20, a pentode having in its cathode circuit the tuning fork maintaining coil 21. The phase shift in amplifier 19 is such that the half-wave pulses of energy to coil 21 coincide with the inward swing of the fork limbs. Fixed to the other limb of the fork is a contact arm 23 which, when the vibration amplitude becomes excessive, touches fixed contact 22 and earths the grid of valve 27. Valves 26, 27 form a controlled multivibrator which, when triggered, produces a negative pulse on the grid of cathode follower 25: this in turn earths the screen and suppressor of valve 20, cutting it off and thereby removing energy from coil 21. The period of the multivibrator pulse is approximately one half cycle of fork vibration. In a further embodiment, Fig. 4, energy is supplied to the fork maintaining coil 4 through valve 9. This is switched on by contacts 15, 16 when the fork limb is in its medial position on an outward swing and remains on for one halfcycle, except when the amplitude is excessive. Then contacts 12, 13 make and earth the screen grid switching the valve off. It remains cut off for a half-cycle until capacitor 10 has re-charged through resistor 11. In Fig. 2 (not shown) is a simpler embodiment which removes energy from coil 4 only for the duration of excess amplitude, i.e. the time during which contacts 7, 8 are made. Further embodiments referred to dispense with the amplitude limiting contacts and increase the impedance of the electromagnetic circuit when the amplitude becomes excessive by inductive or capacitive means, e.g. mu-metal knife edges replace the contacts and their relative positions during excess vibrations so affect the reluctance of a magnetic circuit that corrective control is applied to the energizing means.
Patent GB-314443-A (GB)
Title: Improvements in the manufacture of urea
IPC: C07C273/04
Filed: 1929-06-27
Abstract: 314,443. Lamb, A. B., (Assignee of Krase, H. J., and Hetherington, H. C.). June 27, 1928, [Convention date]. Urea is produced by heating ammonium carbamate or compounds of ammonia, carbon dioxide and water such as ammonium carbonate or bicarbonate in an autoclave, in the presence of an excess of ammonia equal to at least 15 per cent of the weight of the combined ammonium, to temperatures of from 150 to 200‹ C. When the reaction has proceeded to the desired extent the temperature may be lowered, for example to 60- 100‹ C., and the uncombined ammonia distilled off and used again. The process may be made continuous, for example, by leading carbon dioxide and excess of ammonia into an autoclave, and working by the continuous process described in Specification 335,913. An example is given. Specification 241,123 also is referred to.
Patent GB-376016-A (GB)
Title: Improvements relating to cases for spectacles, eyeglasses and the like
IPC: A45C11/06
Filed: 1931-07-09
Abstract: 376,016. Cases for spectacles &c. ROBBINS, C. E., 425, Hale End Road, Woodford Green, Essex. July 9, 1931, No. 19766. [Class 18.] In a spectacle case comprising a box 14 and a lid 16 hinged together along one of their longer edges, the velvet &c. lining 10 is turned over the edges of the lid, or of the box, or both, and is stuck down on the outside at 18, and the outer covering 22 is taken up to, but not beyond, the edges over which the lining is turned and is stuck down to the turned-over portions of the lining. A make-up piece 20 of cardboard &c. is stuck on to the lid in the space unoccupied by the velvet &c. to produce an even thickness before the covering 22 is applied. The covering 22 extends over the outer surface of the lip 12 of the case and is turned over the edge thereof and stuck down to the inner surface of the lip.
Patent GB-498858-A (GB)
Title: Improvements in or relating to the manufacture of electrical apparatus
IPC: H01B3/28
Filed: 1937-07-16
Abstract: Electrical apparatus is insulated with a material obtained by chlorinating rubber until it contains not substantially more than 20 per cent of chlorine, and subsequently vulcanizing.  Highly chlorinated rubber may be mixed with the lightly chlorinated rubber before vulcanization, suitable proportions being 20-67 per cent lightly chlorinated to 80-33 per cent of highly chlorinated rubber. According to an example, 20 parts of rubber containing 4 per cent of chlorine and 80 parts of rubber containing 65 per cent of chlorine are rolled into sheets 1 mm. thick and vulcanized by immersion in a 3 per cent solution of sulphur monochloride for 10 min. at 25 DEG  C. The sheets are used for facing switch gear panels. Specification 487,168 is referred to.
Patent GB-202486-A (GB)
Title: Improvements relating to transmissions for odometers for motor and other vehicles
IPC: B60Q1/54
Filed: 1922-07-20
Abstract: 202,486. Emons, G. H. July 20,1922. Odomers.-The spindle of a star-wheel f engaging a spiral e on one of the steering-wheels b of a vehicle and transmitting motion to the odometer through a flexible shaft is supported in a bearing j carried on an arm i formed integral with the usual steering arm h. A grease cup k may be fitted to the bearing.
Patent GB-249736-A (GB)
Title: Improvements in and relating to the manufacture of gelatine
IPC: C09H1/02
Filed: 1925-08-08
Abstract: 249,736. Tod, A. H. Aug. 8, 1925. Gelatine.-Before the extraction of gelatine from osein, fragments of bone are removed from the bone material under treatment by immersing the bone material. in a fluid of a density which will float the fragments of bone to the surface. The fluid may be sulphurous or phosphoric acid. The fragments of bone are removed by a mechanical separator or by hand. The separation may be assisted by stirring. A mechanical separator comprises a ring 1, fitting closely within the vat in which the separation takes place, connected with a central stem 2 by radial rods 3 on each of which is hinged a perforated vane 4. The separator is lowered into the liquid in the vat while the vanes 4 are held open by catch-rods 5 secured on a rod 6 carried within the stem 2. The rod 6 is then operated by a rack and pinion 8 to release the vanes which close by gravity. The resulting eddying assists separation of the deleterious substances which are caught on the upper surface of the separator which is slowly raised. A hook 10 on the stem 2 is provided for supporting the separator on a tripod or runway over a series of vats.
Patent GB-819101-A (GB)
Title: Improvements in and relating to fastening devices
IPC: F16B5/12
Filed: 1957-06-25
Abstract: 819,101. Stud and socket fasteners; nails &c. UNITED-CARR FASTENER CORPORATION. June 25, 1957 [July 2, 1956], No. 20018/57. Classes 44 and 89(2) A fastener 10, Fig. 3, e.g. for securing a moulding 12 to a panel 14. is made of sheetmaterial and comprises a head 24, Fig. 4, and a shank 28 having a stem-part 30 and an end-part 32 bent from the free-end of part 30, and providing a shoulder 40 for snapping engagement with a panel-opening 16. A stop-portion 42 prevents the endpart from passing completely through the opening.
Patent GB-797367-A (GB)
Title: Improvements in or relating to pulse radar apparatus
Inventor: PARKER ERIC
IPC: G01S7/282
Filed: 1955-07-11
Abstract: 797,367. Radar. DECCA RECORD CO., Ltd. July 11, 1956 [July 11, 1955], No. 20063/55. Class 40 (7). Two pulse radar transmitters transmitting alternately on different frequencies have individual duplexers which feed the aerial via waveguide unit 23 incorporating two 3 db. branched guide directional couplers 24, 25. One arm of coupler 24 is connected to the aerial and the decoupled arm to dummy load 26; the remaining two arms are connected to two decoupled arms of coupler 25, these connections being of different effective lengths and one including adjustable phase-shifter 27. Display unit 41 may be fed with the combined received signals whilst display units 39, 40 may be fed respectively with the signals from the separate receiving channels and for this purpose the compiler video signal output is controlled from unit 31. One combined display for range stretch O to R and one for R to 2R (R corresponding to the combined recurrence frequency) may be provided. A blanking signal from unit 31 prevents undesirable bright spots on displays, the resulting fixed blind spots being avoided by varying the pulse repetition frequency of the modulator. Detector and bias control units 43, responsive respectively to the signals in the two receiving channels, bias off the associated I.F. amplifier if strong jamming signals are present. More than two transmitters may be used. If the radar coverage patterns are frequency-sensitive, appropriate choice of radiated frequencies can be made to give complementary coverage patterns.
Patent GB-1509195-A (GB)
Title: Agricultural and horticultural compositions and process
IPC: A01H/
Filed: 1974-05-07
Abstract: 1509195 Augmenting fruit production W W SCHWABE and G K GOLDWIN 2 May 1975 [7 May 1974 15 Oct 1974] 20071/74 and 44635/74 Heading C1B A composition for augmenting fruit production comprises an auxin, a gibberellin and a substituted urea R<SP>1</SP>NHCONHR<SP>2</SP>, R<SP>1</SP> being H, hydrocarbyl or heterocyclic, and R<SP>2</SP> being phenyl (R' and R<SP>2</SP> may contain further substituents). The weight ratios urea : gibberellin and auxin : gibberellin are preferably 0À5:1 to 20:1 and 1:100 to 10:1. The composition may be mixed with water or an organic diluent or with a solid diluent, e.g. as a tablet. In use it is applied to the sites of potential fruit formation.
Patent GB-903592-A (GB)
Title: Improvements relating to mixing machines
IPC: F42B33/02
Filed: 1959-06-12
Abstract: 903,592. Batch mixing machines. BAKER PERKINS Ltd. June 12, 1959 [July 10, 1958], No. 20158/59. Class 86. A batch mixing machine has two interacting stirrers which rotate on their own axes while moving in orbit about the centre of the mixing bowl. The apparatus has two helical stirrers 51, 52 on shafts 48, 50 journalled in bearings in dependent sections 40, 41 of a carrier C which is rotated about a fixed shaft 30 axial of the bowl B by means of the action of the driving-shaft gear 35, on the teeth 36 of the internally-toothed gear 37. The shafts 48, 50 are geared together by gears 59, 60 and the shaft 50 is driven by gear 58 meshing with gear 56 which is freely rotatable on shaft 48 and is in turn driven by the internal teeth 55a of the reaction gear 55 fixed on shaft 30. The helical stirrers 51, 52 are pitched to move material towards the bottom of the bowl and their paths intersect so that the whole area of the bottom of the bowl is swept to achieve uniform mixing throughout. The bowl B has jackets 63, 64 for a heating or cooling medium and may be raised and lowered by hydraulic gear, see Fig. 1 (not shown). It is located by studs 75. The machine is primarily intended for volatile high-energy fuels and explosive mixtures and seals are provided as at 80, 81 to prevent contamination of the mix.
Patent GB-201615-A (GB)
Abstract: 201,615. Benstead, A. G., and Rotax (Motor Accessories), Ltd. April 29, 1922. Systems, electric; indicating.-An indicator j such as a lamp, bell or buzzer is connected in circuit between the ignition switch d and the series coil g of a dynamo cut-out f. The indicator functions if the ignition switch is left in the closed position when the engine stops, and also when the switch is closed to start the engine; it continues to function until the voltage of the dynamo exceeds that of the battery.