baber/WOPTO huggingface dataset:
Patent GB-1054490-A (GB)
IPC: H01S3/223
Abstract: 1,054,490. Lasers. WESTERN ELECTRIC CO. Inc. Oct. 28, 1965 [Nov. 9, 1964], No. 45642/65. Heading H1C. In a gas laser system a first gas is excited separately from and prior to mixing with a second gas which latter gas is consequently pumped by interaction with the first gas to produce a population inversion. In the embodiment of Fig. 2 (not shown) nitrogen is introduced for continuous flow into a discharge region comprising a multi-section glass tube 12 and a D.C. discharge is initiated between two spaced anodes and a cathode. The thus excited nitrogen molecules in their vibrational levels of their ground electronic state are made to flow into an interaction region comprising an elongated gas tube 20 through a plurality of inputs spaced along the tube. Carbon dioxide in which the inverted population is to be produced is introduced into tube 20 at separate inlets and due to collisions of the second kind with the excited nitrogen molecules the ground state molecules of carbon dioxide are excited to the upper vibrational lasing level, Fig. 2 (not shown), the nitrogen 2330À7 cm.<SP>-1</SP> level being nearly in coincidence with the 2349À16 cm.<SP>-1</SP> vibrational level of carbon dioxide. The gases after transfer of energy and subsequent lasing are withdrawn through outlet ports by a pump and separated for subsequent re-circulation. If the laser is to operate as an oscillator the ends of the tube 20 are closed by confocal concave mirrors or alternatively the ends of the tube may be closed by Brewster angle windows and mirrors positioned outside. Mirrors are omitted if the laser is to operate as a straightthrough amplifier. The walls of the interaction tube 20 may be treated to minimize their effect on the lifetimes of incident excited particles. The nitrogen may be excited by an R.F. discharge, chemical reaction, or merely passed over a heating element. The gaseous system may be N 2 -N 2 O or O 2 -CS 2 , the first gas in each case being the exciting gas.
Patent GB-1098495-A (GB)
IPC: A01D34/04
Abstract: 1,098,495. Mowing machines. KUHN FRERES & CIE. April 15, 1965 [April 20, 1964], No. 16259/65. Heading A1F. A tractor-mounted mowing machine comprises a tube 2 housing a drive-transmission shaft, the tube being attached to the tractor-chassis along the forward part of that side of the chassis which is adjacent to the cutter-bar 4, the shaft being driven at the front by the tractor-engine and carrying at its rear end an element 9 drivingly connected to the cutter-bar. The drive to the front end of the shaft comprises a belt, which can be adjusted to slacken or completely to interrupt, the drive, by moving the tube 2 bodily in its mountings (Fig. 5, not shown). The element 9 comprises a crank-disc connected to the knife-bar by a pitman 20 and rocking link 21. The tube 2 carries a break-back linkage which may include a connection 47 to the clutch of the tractor. The tube also carries a lifting device for the mower comprising a hydraulic ram 41 pivoted between the tube 2 and the inner mower-shoe 13.
Patent GB-1143859-A (GB)
IPC: H01B13/30
Abstract: 1,143,859. Unsaturated polyester resins. MASCHINENFABRIK OERLIKON. 15 June, 1967 [28 June, 1966], No. 27663/67. Heading C3P. [Also in Division H2] In a process for the production of heat resistant, high voltage insulation for armatures of electrical machines a base material in the form of an insulating tape is impregnated with a solution of an unsaturated polyester resin containing a cobalt compound as accelerator and is dried, the impregnated material is wound round the armature conductor, melted with a styrene solution containing 0À5 to 10 weight per cent of a peroxide, and the assembly is cured at room temperature. The tapes may be glass fibre/mica or polyester fibre/mica strips. The assembly may be wrapped in a paper, polyester webbing or felt, or fibre-reinforced thermoplastic foil to prevent leaching of the polyester resin during wetting. The cobalt accelerator may be cobalt octoate, and the peroxide methyl ethyl ketone peroxide or cyclohexanone peroxide.
Patent GB-1225613-A (GB)
IPC: F15B5/00
Filed: 1967-09-26
Abstract: 1,225,613. Data transmitters. INTERNATIONAL COMPUTERS Ltd. 29 Nov., 1968 [26 Sept., 1967], No. 43777/67. Heading H4K. [Also in Division G5] A V.F. tone generator for transmitting data from a telephone subscriber's station to a central computer, comprises a pneumaticallyoperable oscillator whose output frequency is controlled in dependence on the punchings in a punched card. The latter 15 is placed on a perforated tray 35, 36 in an opened drawer 11 and is held in position by another perforated plate or, as shown, a spring clip 16. The drawer is closed automatically by means of springs 17 and in so doing drives a piston into a cylinder. Compressed air from the latter enters chest 50 so that whenever a row of "holes " in the punched card passes below the pipes 52, jets of air pass through orifice 36 or into pipe 54, depending on whether a perforation is or is not there and hence do or do not actuate respectively organ-type pipes 40. A common reservoir 51 normally supplies a continuous air stream to the pipes 40, the stream being disturbed by air deflected into pipes 54 by imperforate parts of the punched card so as to prevent a tone from being generated. The audio output of the pipes is passed via aperture 12 in the generator housing into a telephone mouthpiece. The computer may return data to the set which is coupled to the telephone earpiece via aperture 13. Fluid logic may be incorporated in pipes 54 so as to generate parity signals or convert the initial 1 out of 10 code into m-out-of-n code.
Patent GB-1226613-A (GB)
IPC: D06N7/06
Filed: 1968-07-01
Abstract: 1.226,613. Highly glossy coatings. KURASHIKI RAYON K.K. 1 July, 1968 [30 June, 1967], No. 31305/68. Heading B2E. Highly glossy sheet materials are obtained by applying a layer of solution comprising a polyurethane elastomer in a solvent therefor to a smooth-surfaced body which is at a temperature sufficient to cause evaporation of the solvent, superimposing the substrate which has a substantially smooth surface and is permeable to gas and vapour on to the layer of solution before it solidifies, coagulating the layer of solution sandwiched between the body and substrate by removing solvent from the layer of solution through the substrate and thereafter peeling off the substrate to which the coagulated polyurethane layer is attached. The smooth-surfaced body may be a and the substrate may be a fibrous base or a polymer film which may be treated by painting and embossing. The solution applied to the smooth-surfaced body may have a concentration of 10-25% and the substrate may be superimposed thereon when it has a concentration of 30-40%. Heat may be applied to the back of the substrate by hot air or electric heaters. A polyurethane elastomer may be blended with less than 50% of another polymer such as polyvinyl chloride.
Patent GB-1228136-A (GB)
IPC: F16H61/42
Filed: 1967-06-06
Abstract: 1,228,136. Controlling hydrostatic transmissions; linkwork. DOWTY HYDRAULIC UNITS Ltd. 5 June, 1968 [6 June, 1967], No. 26002/67. Headings F2D and F2K. The claims relate to the manual neutralizing valve 34 of Specification 1,228,135. The present Specification additionally includes an alternative arrangement whereby pressure is shortcircuited instead of being dumped.
Patent GB-1228534-A (GB)
IPC: D01H4/24
Filed: 1969-08-05
Abstract: 1,228,534. Open end spinning. VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY INSTITUT LEGKOGO I TEXTILNOGO MASHINOSTROENIA. 5 Aug., 1969, No. 39039/69. Heading DID. An open end spinning device comprises a spinning chamber 5 with a fibre deflector 8 in the throat, the chamber being axially movable to the position shown in Fig. 2 when a transducer 12 indicates a drop in tension in the yarn leaving the chamber (i.e. a thread breakage or slackening) so that the incoming fibres 22 pass over the upper edge of the spinning chamber to be carried away along a suction duct 2. The chamber 5 is mounted on a driven spindle 10 carried in bearings 17 in a frame 16; an electromagnet 13 is linked to frame 16 and when transducer 12 indicates a drop in yarn tension it is energised to pull down frame 16 together with chamber 5 against springs 14 mounted in a fixed part of the frame. When the break is repaired yarn 23 is tensioned once more so that transducer 12 de-energises electromagnet 13 and springs 14 lift the spinning chamber into its working position.
Patent GB-1228601-A (GB)
IPC: H04L25/48
Filed: 1968-05-24
Abstract: 1,228,601. Frequency multiplex systems. WESTERN ELECTRIC CO. Inc. 24 May, 1968 [26 May, 1967], No. 24995/68. Heading H4R.  In a system for the parallel transmission of data signals the data signals are arranged to modulate carrier waves in quadrature pairs, each pair spaced from adjacent pairs by a frequency equal to the data signalling rate. All the carriers are derived from one oscillator so as to be phase locked one with another. Fig. 1 shows a transmitter system in which a master oscillator 10 provides a frequency equal to twice the data input signal rate which is halved in dividers 24 and 26 to provide quadrature sampling frequencies on lines 13 and 14 which are used to sample the incoming data streams, a to f, and to synchronize phase locked oscillators 16, 17, and 18, from which carriers for the data signal modulators are derived via the pairs of divider circuits, each pair providing carriers in quadrature. A pilot signal is also derived from divider 12 via the phase locked oscillator 61, the output from which is modulated by the sampling signal on line 13 after it has been halved in divider 58. At the receiver, Fig. 2, the pilot signal is extracted by filter 63, envelope detected, and used to synchronize an oscillator at twice the data bit rate. From the output of this oscillator data bit sampling signal carriers for the demodulators are derived in a similar manner to that used at the transmitter. The data is recovered using synchronous detectors, 85-91, low pass filters, 99-106, and samplers 114 to 121. The advantage of the system is that interference components from adjacent channels on the wanted channel are all of double the data signalling rate and can easily be removed by simple low-pass filter. By suitable choice of filter characteristic the overlapping signals can be made symmetrical relative to the "dotting" frequency (a) so that the interfering signals all pass through zero at the same time.
Patent GB-1232554-A (GB)
IPC: B22D11/00
Filed: 1970-01-23
Abstract: 1,232,554. Lactulose. LAEVOSAN-GES. CHEM. PHARM. INDUSTRIE FRANCK & DR. FREUDL. 23 Jan., 1970 [7 Feb., 1969], No. 3306/70. Heading C2C. Lactulose is prepared by heating a saturated aqueous solution of lactose (containing 60- 65% by weight of lactose) at 80-110‹ C. with the addition of 0.05 to 0.5 mole of an alkali metal or alkaline earth metal sulphite per kg. of lactose monohydrate until the optical rotation of the reaction mixture is constant. The reaction is preferably performed at the boiling temperature (about 102‹ C.) using sodium sulphite. The reaction mixture may be cooled, seeded with lactose and the lactose which crystallizes out is removed. The remaining solution may be treated with an ion exchanger to remove the sulphite and any organic acids formed and the solution is then concentrated to crystallize residual lactose.
Patent GB-1239048-A (GB)
IPC: F16K3/02
Filed: 1968-12-23
Abstract: 1,239,048. Valves. GROVAG GROSSVENTILTECHNIK A.G. 23 March, 1970 [23 Dec., 1968], No. 60994/68. Heading F2V. An isolating valve comprises a pair of frame members 1 connected by bridge pieces 12 to have a peripheral gap therebetween and each formed with a fluid flow opening. A plate 11 which is movable by a motor through a chain or screw mechanism has an aperture therein which is aligned with the openings to open the valve. Self-adjusting closed-loop leaf springs 10 seal the gap between each frame member and the plate in all positions of the plate. The chambers containing the seals may be closed with plates 9 which may be coated with a P.T.F.E. anti-deposit lining. Bars 13 can be extended by screw means to release the leaf springs from the plate if the springs are to be withdrawn for servicing. The plate aperture may have a leading edge which is wedge shaped or inclined to remove deposits on actuation. The plate may be periodically reciprocated to prevent deposit formation.
Patent GB-1251642-A (GB)
IPC: B65F1/08
Filed: 1967-10-31
Abstract: 1,251,642. Domestic refuse installation. H. MONK. Jan.28, 1969 [Oct. 31, 1967], No.49307/67. Heading A4A. An installation for a domestic refuse container, i.e. for metal or plastics bins, or sack holders for disposable sacks, comprises an open-topped outer container 10 suitable for installation in the ground up to a wide lip 11, an open-topped inner container 13, and a movable lid 12 for closing both containers simultaneously, the lid being operable by a pedal 18. The lid may be of composite form, the inner lid 12b closing the top of the inner container, and pivotable about the lip 11 by the pedal 18 which is depressable into a pocket 19. The upper edge of container 13 may rest upon the lip 11, and wheels 14 may be provided to engage the side of container 10 when container 13 is tilted to ease its removal. In an alternative embodiment, Fig. 2 (not shown), a lid (22) has a plurality of inwardly directed lips (36) to engage corresponding lips (35) on an inner container (23), to enable container (23) to be removed by the lid (22).
Patent GB-1251819-A (GB)
IPC: B65G1/08
Filed: 1968-11-20
Abstract: 1,251,819. Conveyers. SERVICE D'EXPLOITATION INDUSTRIELLE DES TABACS ET DES ALLUMETTES. 20 Nov., 1968 [20 Nov., 1967], No. 54955/68. Heading B8A. A device for isolating one or more objects following one another on a conveyer track comprises a gravity roller conveyer having an element 4 movable in the direction 18, an element 6 movable in the direction 19, and an upstream element 2. The element 4 is supported on a horizontally movable shaft 11 of which collars 12, 13 are engageable by a block 20 carried on an arm 10. This arm carries a ramp 8 engageable with a support 7 which, together with the conveyer element 6, is vertically movable. When objects la, 1b, 1c &c. are fed to the apparatus, Fig. 3, object la is stopped at 5 on the conveyer element 4 which is held in position by engagement of collar 12 with the arm 10. A ram 9 connected to the arm 10 then moves to the right, allowing the conveyer element 6 to drop and, by engagement with the collar 13, moves the element 4 away from the element 6 to isolate the object 1a, Fig. 5 (not shown), which is then removed. The object 1b is prevented from movement to the right by a stop 14. When the ram 9 is moved to the left, the support 7 is raised and the conveyer element 4 is returned to its starting position, Fig. 7 (not shown). The object 1b is now clear of the stop 14 and a new cycle begins. The conveyer may be non-inclined, the objects being propelled by push-rod devices or endless belts. The stop 5 may be replaced by a detector which detects the position of the first object and governs the movement of the intermediate element 6.
Patent GB-1253055-A (GB)
IPC: H01K9/08
Filed: 1968-10-08
Abstract: 1,253,055. Vehicle headlamp. PROJECTEURS CIBIE. 8 Oct., 1968 [10 Oct., 1967],No. 47631/68. Heading F4R. A lamp comprises a reflector constituted by a series of parabolic surfaces of revolution disposed about a central axis and a cylindrical illumination source lying tangential at its lower surface to the central axis, the surfaces comprising a main paraboloidal mirror limited by two axial planes and having its focus on the central axis and an upper and a lower recuperative mirror. The light source 2 lies touching the central axis AA and the focus F of the paraboloidal main mirror 1 lies on the axis in the vicinity of the centre of the source 2. The main mirror 1 is limited by a horizontal plane (P 1 ) and an inclined plane (P 2 ) both passing through the axis AA and inclined to one another at 15 degrees (Fig. 2, not shown). The recuperative mirrors 3 and 4 are both paraboloidal having foci F 3  and F 4  respectively. The inclination of the two planes (P 1 , P 2 ) is determined according to whether the headlamps are used for left-hand or right-hand drive. In another embodiment (Figs. 4, 5 and 6, not shown) the two paraboloidal recuperative mirrors (13, 14) are described by the generation of parabolae whose respective foci do not lie on the central axis but form focal rings (f 13 , f 14 ) on generation. The focal rings lie respectively above and below the central axis and quarter-cup shaped masks (13a, 14a) are provided which respectively lie on and behind one of the rings and on and in front of the other. The sides of the masks are limited in accordance with the inclination of the planes which limit the main mirror.
Patent GB-1256498-A (GB)
IPC: F02M13/02
Filed: 1968-05-13
Abstract: 1,256,498. Whistles. LES LESTON PRODUCTS: Ltd. 18 March, 1969 [13 May, 1968], No. 22688/68. Heading G5J. [Also in Divisions F1 and G1] A device for balancing the carburetters of an I.C. engine comprises a chamber 1 with two air inlets 6 and 7 and an outlet 5, a mask 8 to vary the area of the inlet 7 and a whistle 9 within the chamber operated by air from the inlet 6. In operation, the device is placed on a carburetter intake, which intake surrounds the outlet 5, and the mask 8 is adjusted until the whistle 9 emits a loud note. With the mask 8 in the adjusted position the device is placed on the intake of the or each remaining carburetter which is adjusted to produce the loud whistle note. The device may be formed of opaque plastics material and the base-plate 3 covered with a layer of felt, plastics foam or rubber. The mask 8 may be retained on the device by a projection, e.g. a ring, fastened to the device above the mask.
Patent GB-1258253-A (GB)
IPC: B66F9/10
Filed: 1968-02-16
Abstract: 1,258,253. Masted lift trucks. LANSING BAGNALL Ltd. 5 Feb., 1969 [16 Feb., 1968], No. 7789/69. Heading B8H. Straddle legs 13, 14 of a lift truck are pivotally connected by means of transverse spindles 43, 44 to the body portion 12 of the truck and are interconnected in such a manner that upward pivotal movement of one leg is accompanied by downward pivotal movement of the other leg. The legs consist of channel sections 21, 22, provided with brackets 41, 42 having bearings for the spindles 43, 44, and lever sections 36, 37. The ends of the lever sections are pivotally connected to the ends of a link 45 which is connected at its centre to the body portion 12 of the truck by means of a ball-joint 46. The channel sections 21, 22 support the forward rollers 19 of a reach carriage 16 supporting the mast assembly, the rear rollers 23, 24 of the carriage being supported on channels mounted in the body portion 12. In a modification, Fig. 4 (not shown), the straddle legs are provided with modified lever sections 36, 37 whereby the channel sections 21, 22 are located outside the width of the truck, lateral extensions carrying the carriage rollers 19 being provided.
Patent GB-1258280-A (GB)
IPC: G11B23/20
Filed: 1969-12-05
Abstract: 1,258,280. Splicing record tapes. MULTICORE SOLDERS Ltd. 26 Nov., 1970 [5 Dec., 1969], No. 59599/69. Heading G5R. Selected sections of two lengths of tape are joined end-to-end by pressing a pointed instrument into the magnetic side of each length to mark, by an indentation or preferably a hole, the relevant end of the selected section, overlapping the two tape lengths with the two marks substantially in registry and the magnetic side of one tape facing the non-magnetic side of the other, cutting the tapes at the marks and splicing them together with adhesive tape applied to the non-magnetic sides. As described, at least one of the lengths of tape is contained in a cassette.
Patent GB-1258305-A (GB)
IPC: F16L17/073
Filed: 1969-03-21
Abstract: 1,258,305. Pipe couplings. NYLEX CORP. Ltd. 21 March, 1969, No. 14992/69. Heading F2G. A pipe coupling comprises aligned annular recesses 32 in the end faces of pipe flanges 23, a rubber or neoprene sealing ring 33 of generally U-shaped section accommodated in each recess with the mouths of the Us opening radially inwardly, and a two-part bolted collar 24 retaining the flanges with adjacent legs of the rings in engagement and with the rings being in open communication with the interior of the pipes. The abutting legs of the sealing rings are shorter than the legs engaging the bases of the recesses. The pipes may be of synthetics plastics.
Patent GB-1258531-A (GB)
IPC: B41F21/10
Filed: 1969-03-26
Abstract: 1,258,531. Printing apparatus. HEIDELBERGER DRUCKMASCHINEN A.G. 26 March, 1969, No. 15775/69. Heading B6C. To ensure that successive impressions by printing units of a sheet-fed rotary printing machine are in register, in spite of the changes in shape imposed on a sheet in passing through a printing unit, the leading edge of the printed sheet is deformed between printing operations. A transfer cylinder is equipped with grippers of three kinds, all of which initially engage the leading edge of the sheet. At the edges of the sheet there are grippers which remain closed throughout deformation and at its centre-line there are grippers which are mounted so that while remaining closed they can be moved in or opposite to the movement of the sheet. The central grippers are flanked by further grippers which relax during deformation, so that the movement of the central grippers deforms the whole leading edge of the sheet. These further grippers may be actuated by the same mechanism as the edge grippers, the difference between relaxation and remaining closed being due to the provision of varying amounts of play in their actuating mechanisms. The central grippers may be mounted on a rockable member in the centre line of the impression cylinder, and are displaceable circumferentially of the cylinder to a variable, preset amount. Both the displacement of the central grippers and opening and closing of all the grippers may be controlled by rollers running on fixed cam plates as the cylinder revolves.