baber/WOPTO huggingface dataset:
Patent GB-1536480-A (GB)
Title: Divinyl stilbene derivatives processes for their preparation and their use as optical brightening agents
IPC: D06L3/12
Filed: 1976-02-02
Abstract: 1536480 Dialkenyl stilbenes SANDOZ Ltd 2 Feb 1976 [5 Feb 1975] 3930/76 Heading C5E [Also in Division C2] The invention comprises compounds of the general Formula I wherein R 1 , R 2 , R 4  and R 5  are hydrogen, alkyl or alkenyl; R 3  and R 6  are hydrogen or alkyl, or R 2 +R 3  and/or R 5 +R 6  signify an alkylene bridge; R 7  and R 8  are hydrogen or, when R, is in the 3-position and/or R 8  is in the 3<SP>1</SP>-position, R 7  + R 2  and/or R 8 +R 5  signify an alkylene bridge; with the proviso that no more than one of R 1  and R 2  and no more than one of R 4  and R 5  signify hydrogen. In Example 12 dipropenyl stilbene is prepared by reacting stilbene 4,4<SP>1</SP>- dialdehyde and triphenylethyl phosphonium bromide.
Patent GB-328335-A (GB)
Title: Improvements in or relating to welded-on flange joints
IPC: F16L13/06
Filed: 1929-01-28
Abstract: 328,335. Stewarts & Lloyds, Ltd., and Downing, I. Jan. 28, 1929. Divided on 327,785. Joints formed by welding.-In a joint for pipes 2, 2, the adjacent ends of the pipes are held together by flanges 1, which are secured thereto by electric or acetylene welding 3 applied at the back of the flanges, and are sealed by an electric or acetylene weld 8, rims or grooves 9 being provided on the pipe ends for this purpose. The flange is preferably positioned on each pipe so that a part 6 of the latter projects therethrough, this part being heated and turned up, or turned up and welded, against the face of the flange or into a recess in the same, after which the pipe end and flange may be raised to a welding heat and mechanically welded together.
Patent GB-284478-A (GB)
Title: Garment support
IPC: A41F9/02
Filed: 1927-02-14
Abstract: 284,478. Harsh, G. M. Feb. 14, 1927. Fastening wearing-apparel; skirts; belts, outer. -Relates to garment supports of the kind comprising a strip of thin sheet rubber 1 and a covering of stretchable textile fabric 2 connected by stitching allowing stretch, and consists in an arrangement of stitching comprising lines of stitches extending at an angle to the length of the band. The stitching may comprise disconnected sections 7 inclined to the length of the band, or a continuous line of stitching passing zig-zag along the length of the band and across,- substantially, its whole width.
Patent GB-695898-A (GB)
Title: Improvements in or relating to guide systems for magnetic sound-recording and sound-reproducing tapes
IPC: G11B15/62
Filed: 1951-02-20
Abstract: 695,898. Magnetic recording apparatus. KLANGFILM GES. Feb. 20, 1951 [Oct. 1, 1948], No. 4152/51. Drawings to Specification. Class 40 (ii). In a magnetic recording apparatus the recording medium is made to follow a path which curves away from the transducer for the purpose of reducing the effect of leakage flux. The transducer may be pressed against the medium as it passes around a roller, or the medium may be driven around a pair of small rollers so that the medium, by its own elasticity and stiffness is flexed outwardly in a curve towards the transducer.
Patent GB-229851-A (GB)
Title: Improvements in the lock and safety mechanism of small-arms
IPC: F41A17/46
Filed: 1924-02-19
Abstract: 229,851. Johnstone, D. V., and Fearn, J. W. Feb. 19, 1924. Pneumatic safety appliances.-A safety device adapted to lock the trigger while leaving the sear free, comprises a transverse bolt capable of being rotated to bring it into the locking or unlocking position and of sliding axially to lock it in either position. The invention is shown applied to an air gun having a sear a with a tail part overhanging a rearward extension g' of the trigger. The safety bolt h has a flat surface h<1> which can be turned to engage and lock the trigger. The bolt is normally pressed outwards by a spring h<4> and is formed at the edge with two notches h<5>, h<6>, Fig. 2, one of which, when the bolt is pressed outwards, engages a fixed screw head j. To free the bolt for rotation, it is pressed inwards against the pressure of its spring.
Patent GB-562499-A (GB)
Title: New or improved apparatus for use in transferring lines to and producing templates for ships, boats, aircraft and the like
IPC: B63B9/00
Filed: 1943-03-16
Abstract: 562,499. Making templets. SIMPSON, C. E. March 16, 1943, No. 4234. [Class 61 (ii)] A device referred to as spiling tongs, a number of which are used to expedite the transfer of lines drawn on the mould loft floor or on a base board to a sheet of wood, synthetic resin, metal, &c. to enable it to be cut to the shape of the line for use as a templet for making parts of boats, flying boats, aeroplanes, &c. comprises a base 1 with pins 2 for fixing it on the mould loft floor &c. and an arm 4 secured thereto as by means of a spacing member 3 so that when a number of the devices are arranged spaced along the line, say at right angles thereto with the tips of the arms lying on the line, the templet sheet may be located under the arms and a line drawn thereon by using a batten or spline held in contact with the tips of the arms. Modifications are described having the arm movable about a vertical pivot on the base or folding in a, vertical plane.
Patent GB-328355-A (GB)
Title: Improvements in or relating to steering gears for automobiles
IPC: B62D7/22
Filed: 1929-02-08
Abstract: 328,355. Moller, W. Feb. 8, 1929. Steering-gear. - Vibration-dampers comprise a system of at least three links, such as 7 - - 10, connecting the front axle 1 and the track rod 6, the two coupling joints 14 of the system being friction producing in a known manner. The members 7 is fixed to the axle and the rod 10 is attached by a clip 11 to the track rod. The rod 10 is adjustable axially in the member 9 which is slit so as to grip the rod in the adjusted position. The friction joints 14 comprise fibre or other discs and star-shaped spring washers 16.
Patent GB-654922-A (GB)
Title: Improvements in and relating to machine parts
Inventor: OLIVER DONALD ARTHUR
IPC: C22C38/52
Filed: 1944-03-08
Abstract: Machine parts which when in use are subjected to high temperatures and which comprise a body more nearly adjacent the source of high temperature welded to a body situated more remotely from the said source, have the first mentioned body formed of an alloy of the following composition: C 0.08-1.0 per cent; Si 0.1-2.0 per cent; Mn 0.1-5 per cent; Ni 5-30 per cent; Cr 5-21 per cent; W and/or Mo 1.5-15 per cent; Nb 0.25-15 per cent, the Nb being partly replaceable by Ta, the minimum quantity of Nb being 0.05 per cent when Ta is present, with the optional presence of V in substitution for part of the Nb or Ta and Nb, the quantity of Nb or Ta and Nb not falling below 1.0 per cent when V is present; Co 3-30 per cent; N 0-0.3 per cent; Cu 0-6 per cent; Fe not less than 33 per cent and constituting, with unavoidable impurities, the balance, the total content of Ni and Cr being not less than 24 per cent.  A steel of like composition may be used in which Ti wholly or partially replaces Nb.  The second mentioned body is formed of a steel of the following composition: C 0.03-0.25 per cent; Si 0.2-2 per cent; Cr 15-25 per cent; Ni 7-16 per cent; one or more of the metals Nb, V, Zr, Ta 5-30 times the weight of the carbon content; Fe, and unavoidable impurities, the balance. The first mentioned body may be formed with a boss to which the second mentioned body is welded, e.g. by flash butt welding.  The welded machine part may then be stress relieved by heating at about 500 DEG C.  The production of valves for high duty internal combustion engines, and rotors and bearing shafts for high temperature gas turbines and compressors is referred to. Specifications 647,701 and 653,311 are referred to.
Patent GB-661902-A (GB)
Title: Improvements in copolymers
IPC: C08F22/28
Filed: 1949-02-17
Abstract: Soluble, unsaturated copolymers are obtained by heating a tris-2-propenyl aconitate and a 2-propenyl chloride in the proportion of at least 0.3 mols. of the chloride to 1 mol. of the aconitate. Suitable aconitates are those of allyl, 2-methallyl, 2-ethallyl, 2-chlorallyl- 2-hydroxymethyl - allyl, 2 - (chloromethyl) - allyl, tiglyl, crotyl, 4-chlorocrotyl and cinnamyl alcohols, triallyl and trimethallyl aconitates being preferred.  Specified chlorides are those having any of the above propenyl groups, and 2,3-dichloropropene.  Heating is effected at 25 DEG  to 120 DEG  C. for from 2 to 200 hours and a catalyst, e.g. acetyl peroxide, benzoyl peroxide and tert.-butyl hydroperoxide, is preferably used.  When constant viscosity of the mixture is obtained, the copolymer may be isolated by the addition of a non-solvent, e.g. diethyl ether or n-hexane, or by removal of the unreacted starting materials by extraction or distillation. Further purification may be effected by dissolving in a solvent, e.g. acetone, and reprecipitation.  The products may be used as moulding powders and, dissolved in solvents, as coating and impregnating agents.  For this purpose, the crude reaction mixture may be employed by adding a higher boiling solvent, e.g. xylene or the monomethyl or monomethyl ether of ethylene glycol, and then distilling off unreacted propenyl chloride.  The copolymers may be dissolved in polymerizable compounds, e.g. methyl, benzyl, tolyl and allyl acrylates, butyl methacrylate, vinyl butyrate, diethyl and diallyl fumarates, and completely polymerized to an insoluble state.  Heating the unsaturated copolymers at 60-120 DEG C., particularly in the presence of a peroxide catalyst, also renders them insoluble.  Specification 655,524 is referred to.
Patent GB-983387-A (GB)
Title: Web decurling apparatus
IPC: B65H23/34
Filed: 1964-02-03
Abstract: 983,387. Friction clutches. ZERAND CORPORATION. Feb. 3, 1964 [Feb. 4, 1963], No. 4416/64. Heading F2C. [Also in Division B6] A clutch C, driving a web-feed roller 15, is mounted by its hub 64 and bearing assembly 65, 66 on the shaft 63 of roller 15. Gears 60 and a vented drum 61 are rigidly secured to this hub by bolts 67 and 68. Mounted within the drum 61 is an inner member of the clutch in the form of a cylindrical element 70 keyed to the shaft 63. An expandable and pressurizable chamber member 72 is fixed around the periphery of the element 70 and a friction band 73 surrounding this chamber member and is urged thereby into engaging contact with the inner surface 69 of the vented drum 61. Air is supplied under pressure via a manually-adjustable control valve 79, Fig. 2, to the control member 72 via conduits 78 and 74, which permits the clutch to slip to produce the required tension in the web fed by the roller.
Patent GB-908963-A (GB)
Title: Improvements in small-scale gunnery practice apparatus
IPC: F41G3/28
Filed: 1959-02-09
Abstract: 908,963. Miniature artillery ranges. BARANOFF, A. V. Feb. 9, 1959 [Feb. 25, 1958], No. 4422/59. Class 119. Apparatus for simulating artillery fire on a small scale comprises a relief map of the target zone, a battery fire device simulating the shots from the guns mounted for pivotal movement at the point of origin of the shots and including a mounting rotatable about a vertical axis, the mounting having a vertical pivot and being actuated by a direction aiming means, a cradle carried on the mounting and arranged for tilting, a sliding carriage on the cradle, a vertically movable beam connected to the carriage and carrying a range slider, mounting elements representing projectiles which contact the map when the carriage and beam are moved to represent the termination of trajectory of the shot and an adjustable frame for supporting the relief map. A horizontal relief map 9 of wire-gauze coated with a smoke-producing paint represents a target area and is housed on a frame 8. The map can be moved along, traversed across, or raised and lowered above a slideway 4 to position it to scale relative to a box 39 rotatable with a support 2 on a fixed base 1 representing a gunbattery position. A telescope sight 18 representing an observation post can be also positioned to scale along an arm 15 rotatable around base 1. Cheek-plates 26 can be elevated to a slope relative to the horizontal equal to the terminal angle appropriate to a chosen gunrange. Sliders 29 on the cheek-plates 26 carry on a pivot the box 39 which has a rod-assembly 30 radiating from it to under the map 9. The assembly 30 comprises guide-rods 25 along which a carriage 31 is adjusted to the scaled mean fall-of-shot range along a worm 32. The carriage supports electrical contacts 37 whose position relative to each other can be adjusted by rods 36 to reproduce any chosen lay-out of a battery of guns at the firing battery position. When a firing lanyard is pulled the sliders 29 move up the cheek-plates 26 so that the heads of the rods 37 move up the terminal trajectory path to contact the wire gauze of the target map and by making electrical contact produce puffs of smoke to represent shell-bursts. Additional movement to include extra dispersion due to random errors is imposed on the heads by motordriven cams (Fig. 11, not shown) connected to the carriage 31. Appropriate hand wheels and measuring scales are provided for the necessary operations. A way of demonstrating air-burst ranging is also described.
Patent GB-607842-A (GB)
Title: Improvements in or relating to light trailers for connection to motor road vehicles and for like purposes
IPC: B62D63/06
Filed: 1946-02-12
Abstract: 607,842. Vehicle suspensions; trailer vehicles. DAVIES, A. R. Feb. 12, 1946, No. 4424. [Classes 108 (i) and 108 (ii)] A wheeled - support for a trailer vehicle or the like comprises a vertical stem 10 carrying at its lower end the axle of the road wheel and journalled in a bearing 17a formed in the lower part of a substantially cylindrical housing 2, which is carried by the vehicle chassis and accommodates a plunger 18 fixed to the stem 10; the plunger, which is free to rotate in the housing 2, is engaged by a resiliently-pressed friction element 28 adapted to move with the plunger axially within the housing. The housing 2, which has a liner 9, is closed at its upper end by a screw-cap 27, and at its lower end by a cover 15, the flange 14 of which is secured to the housing by bolts 12 welded to the housing. The cover 15 has a stepped boss 16, 17 adapted to fit within the liner 9 and to accommodate the bearing 17a. Springs 29 are fitted in holes 30, 31 in the friction element 28 and the screw-cap 27, respectively. A through-bolt 19 and nut 21 secure the plunger 18 to the stem 10, and the lower end of the latter is welded to a horizontal plate forming the bridge of a sheet-metal fork which carries the wheel at its lower end; each limb of the fork consists of two angle members welded together to form a T-section. If desired, the housing 2 may be charged with oil to provide an hydraulic damping effect, the plunger 18 then being provided with grooves 18a to allow the passage of the oil. The frame of the trailer comprises longitudinal and transverse members 3, 4, Fig. 2, of angle-iron, supporting the sheet-metal floor and sides 35. The frame is stiffened by bracing members 5, 7, 8 fixed to the housing 2 and to the frame members, and by an additional transverse member 6. The bracing members may be of T-section formed from angle-iron sections welded back to back. The corners of the body are stiffened by angle-iron corner pieces 34, which, at the front of the trailer, extend downwards to form legs which terminate in hemispherical feet.
Patent GB-621308-A (GB)
Title: Overedge sewing machine
IPC: D05B1/20
Filed: 1947-02-17
Abstract: 621,308. Hinges. SINGER MANUFACTURING CO. Feb. 17, 1947, No. 4479. Convention date, Sept. 10, 1946. [Class 65 (ii)] [Also in Group VII] Spring-action knuckle-jointed hinges; pivoting adjustments, single.-An arm 56, carrying a folding device in a sewing-machine (see Group VII), pivoted at 58 to a support 59 provided with a, detent lever 61 pivoted at 63 and carrying a pin 65 which engages notches 56a in the hinge lugs of the arm 56 ; the detent is urged into engagement with the member 56 by springs 67 acting against the pin 65. When the detent is released the arm 56 is turned upwards by a spring-pressed plunger 70, the movement being completed, on release of the detent, by the pin 65 bearing on cam surfaces on the lugs of the member 56.
Patent GB-682303-A (GB)
Title: A machine for regulating a moving stream of objects
Inventor: COPPING GEOFFREY PERCY
IPC: B07C1/02
Filed: 1949-02-18
Abstract: 682,303. Letters sorting. POSTMASTER GENERAL. Feb. 18, 1949. No. 4492/49. Class 78 (i). [Also in Group XL (b)] Before being fed to a facing machine as described in Specification 675,556, [Group XL (b)], letters longer than a pre-determined maximum and following the previous letter with less than a predetermined minimum spacing are rejected photoelectrically. As shown letters follow each other along a route 10 successively interrupting light beams to the photo cells AP, BP and CP. Distance AB represents the minimum letter spacing and distance AC the maximum letter length. Each interruption and restoration of the light beam produces a negative pulse from the photo cell which is used to reverse the condition of an electronic device such as that shown in Fig. 2 which has two stable conditions. If VI conducts a negative pulse its suppressor grid blocks it and V2 conducts until a negative pulse is applied in turn to its suppressor. In a modification, Fig. 3 (not shown), the circuit has only one stable condition which is reversed by a pulse but the system restores automatically when the charge on a condenser connected between the anode of V2 and the grid of VI has leaked away. Each reversal produces a positive pulse at P. The two operations which the apparatus performs are described with reference to Figs. 5 and 6 which must be read by means of the key forming part of Fig. 6. Rejecting a letter following too closely the previous one (Fig. 5). As a first letter interrupts the light to photo-cell B the negative pulse produced reverses the condition of a device 15 as described above and the positive potential 17 resulting is applied to a known gating valve 14 (Fig. 4, not shown). The next letter interrupts light to a cell A reversing a device of the modified self-restoring type which also supplies a pulse to the gating valve. Unless the first letter has left beam B, the negative pulse produced as it leaves restoring the device 15 and cutting off positive potential 17, positive potentials 17 and 18 together cause gating valve 14 to conduct and operate a further electronic device 20 and the positive potential 21 produced is used to operate a diverter (not shown) which pushes the letter out of the stream. As the second letter leaves photo-cell A, device 20 restores to normal. Device 16 restores automatically. Rejecting a long letter (Fig. 6). As the start of the letter passes photo-cell B device 24 operates and applies a positive pulse to gating valve 23. Subsequent darkening of photo-cell C and operation of device 25 applies a further positive pulse to gating valve 23 which will operate unless the trailing edge of the letter has passed A restoring device 24 to normal. The gating valve operates device 29 and the positive pulse produced actuates a diverter to reject the letter. As its trailing edge leaves devices A, B and C, devices 24, 25 and 29 restore.
Patent GB-336921-A (GB)
Title: Improvements in the manufacture of cast glass plates and sheets
IPC: C03B13/02
Filed: 1930-02-10
Abstract: 336,921. Brancart, Y. Feb. 14, 1929, [Convention date]. Rolling. - Relates to the method of producing glass plates or sheets by forming them, or treating them immediately after formation, with a rough roller. The impressions formed on the plates by the rough roller disappear at once, and leave the plates free from undulations. The present invention consists in rotating the rough roller at a slightly higher speed than if it were rolling on the plate, so that the glass is driven backwards slightly towards the beginning of the plate.
Patent GB-395068-A (GB)
Title: Improvements in electric control systems for electric motors
IPC: H02P1/20
Filed: 1932-02-16
Abstract: 395,068. Master control of motors; electromagnetic relays. FLETCHER, G. H., Tapton Close, Tapton House Road, Sheffield, BROOKS, R., Ivyhurst, Charlton Drive, Sale, Cheshire, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Feb. 16, 1932, No. 4613. [Classes 38 (iii) and 38 (v).] A motor current-limit relay L, controlling the sequential operation of resistance contactors OCR1 .. OCR4, has, in addition to a main operating coil OCL, an auxiliary operating element AOCL which varies the relation between the magnetic flux and the current in the coil OCL to an extent which may be varied. As shown the auxiliary operating element AOCL is a coil on the relay L opposing the main coil OCL, and its. energization is varied by means of a controller MC which removes or inserts steps of a series resistance RS. In a modification the auxiliary element is a magnetic member adapted to be moved in proximity to the core of the relay L by means of a pedal. In a further modification the relative positions of the core of the relay L, and a sleeve carrying its winding OCL, can be varied.
Patent GB-1528153-A (GB)
Title: Technetium-99m
IPC: G21F9/12
Filed: 1975-02-03
Abstract: 1528153 Radio-active materials RADIOCHEMICAL CENTRE Ltd 27 Jan 1976 [3 Feb 1975] 4618/75 Heading G6R An aqueous solution containing Tc99m as pertechnetate ion is concentrated by acidifying the solution if necessary, contacting with a bi-functional ion exchange material which retains the pertechnetate under acid conditions. removing the Tc99m from this ion exchange material by contact with aqueous alkali of smaller volume than the original solution, and neutralizing the alkaline extract obtained. The ion exchange material may be a chelating resin, alumina, zirconia, or hydrated ferric oxide. The acid solution treated may be obtained by elution of Mo99 with dilute HCl, or by using aqueous saline as the eluant and contacting the eluate with cation exchange resin to reduce the pH of the solution. The acid solution after contact with the bifunctional ion exchange material may be made alkaline and used for the removal of Te99m from the ion exchange material. For this purpose, NaOH as solid or aqueous solution and a phosphate buffer may be added, or the acid liquid may be contacted with an anion exchange resin in hydroxyl form. The alkaline extract may be neutralized by contact with a cation exchange resin which may be the same as that used to reduce the pH of the original solution. Details are given of the types of ion exchange materials used. A device for carrying out the process is described with reference to a drawing.
Patent GB-764580-A (GB)
Title: Improvements in or relating to gas refrigerators operating on the reversed hot gas engine principle
IPC: F25B9/00
Filed: 1955-02-16
Abstract: 764,580. Refrigerating. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Feb. 16, 1955 [Feb. 18, 1954], No. 4652/55. Class 29. Upon starting up of a reversed hot gas engine, the motor 28 is unloaded by venting the working space 11 through a connection 22 to an auxiliary space such as the crank-case. This venting also occurs when the motor is stopped to prevent the machine running as a hot gas engine. The connection includes a non-return valve 24 and is controlled by a slide valve 23. This valve is normally held open by a spring 26 when the motor is stopped and when it is in star connection for starting. When the motor changes to its delta connection a solenoid 27 is energized to close the valve. The working medium can flow from the crank-case to the working space through non-return valves 14, 18 and a lubricant separator 16, the lubricant being returned to the crank-case through a valve controlled by a float 21.