baber/WOPTO huggingface dataset:
Patent GB-985984-A (GB)
Title: A process for the manufacture of thiophosphoric esters
Inventor: LEBER JEAN-PIERRE
IPC: C07F9/165
Filed: 1961-03-28
Abstract: Thiophosphoric esters of the formula <FORM:0985984/C2/1> in which R1 and R2 are C1 or C2 alkyl groups and Y is an O or S atom are obtained by reacting an acid (R1O)2P(: Y)SH with an alcohol of the formula HO.CH2CH2SR2 in the presence of a strong proton-acid containing combined oxygen but no combined nitrogen and/or of a Lewis acid such acid or acids being denoted by III. The acid (R1O)2P(: Y)SH may be used in the form of a salt thereof (e.g. an alkali metal salt), the free acid being liberated from the salt by means of an acid III of sufficient strength to liberate the free acid.  The reaction may be carried out at room temperature or elevated temperature and when water is formed during the reaction it may be removed by the use of reduced pressure, by azeotropic distillation or by the addition of a dehydrating agent which may be the acid III.  The process is generally carried out by adding the alcohol to the proton acid and/or Lewis acid if necessary in the presence of a solvent and then adding the phosphorus acid or alkali metal salt thereof. Specified solvents are chlorobenzene, ethylene dichloride, dioxane and a carboxylic acid di-(C1-C2 alkyl) amide, e.g. dimethyl formamide. Specified acids (III) are sulphuric acid, methane sulphonic acid, sulphuric acid anhydride and zinc chloride and specified dehydrating agents are sulphuric acid anhydride, phosphorus pentoxide and zinc chloride. The use of technical oleum as the acid III is particularly advantageous.  A suitable compound of the formula HO.CH2CH2SR2 is hydroxyethylethyl-sulphide and several examples in which this alcohol is used are given.
Patent GB-113762-A (GB)
IPC: A01K31/10
Abstract: 113,762. Watson, W. M. April 23, 1917. Feeding and drinking appliances for animals; poultry houses; cages, pens, and the like.-A device for timing the opening of a door or the like tc release or admit animals or to give access to a feeding-trough, comprises a vessel adapted to be gradually filled by the drip of a liquid or suitable substance, a movement resulting and serving to set free a weight which gathers impetus in its descent so as tc actuate forcibly the door &c fastening. The vessel a is hung on a lever c, normally balanced by a weight e retained by a catch f at the opposite end. Water or other readily flowing substance dripping from the reservoir g gradually fills the vessel causing the lever c to tilt. As the opposite end rises, the catch f is actuated by a fixed stop d<1> releasing the weight e which rolls through the opening d<2>, down the shoot h gathering impetus, and into a cup i on the end of a lever stop j which normally maintains the door fastening k in position. Tho impact of the weight e displaces the lever j releasing the catch k and allowing the door l to be raised by the counterweight m, thereby giving access to a feeding trough n. A light spring k<1> facilitates resetting. As the vessel a sinks, it is tipped over and emptied by a fixed stop a<2>. Specification 112,137 is referred to.
Patent GB-294968-A (GB)
Title: Improvements in life guards for motor and like vehicles
IPC: B60R21/34
Filed: 1927-04-29
Abstract: 294,968. Cole, T. H. April 29, 1927. Obstruction-removers.-A life-guard for vehicles comprises a flexible sheet or net d, Fig. 1, mounted on a preferably resiliently-mounted framework a at the front of the vehicle for the reception of any person with whom the vehicle has collided, the sheet or net being normally maintained in the rolled or collapsed position at the forward end of the framework a and automatically released when required for use. The framework a may be pivoted to horn-pieces b<1> and held against a rubber buffer b<2> by means of U-shaped straps b<3> secured together by bolts and interposed springs b<5>. The flexible sheet d may consist of parallel springs whose width preferably decreases from the front to the rear, and the sheet d preferably takes up in repose the same curvature as the framework a, or occupies a position above it. The parallel springs may be connected at intervals by transverse members, and the whole may be covered by an upper, or an upper and lower sheet of canvas, or the like, or a loose cover may be provided to protect the flexible sheet when rolled up. In some cases, the transverse members may be formed of wood battens. The horizontal brace bar c of the framework a carries a detent lever c<3>, Fig. 3, and a pivoted catch c<2> engaging therewith. The detent lever c<3> is connected by a link f<3> to a contact-bar f mounted by means of end-rods f<1>, Fig. 1, in the end members of the framework, and the catch c<2> engages a slip-ring c<5>, Fig. 3, connected to one end of flexible elements c<4> which are carried round the flexible sheet or net d and secured to the brace-bar c so that, when the contact-bar f is pressed inwards, on contacting an object, in opposition to springs f<2>, the catch c<2> and consequently the ring c<5> are released and the flexible sheet or net d is free to unroll. The rear transverse lath d<1> of the flexible sheet or net may be provided with slings or loops which, when the sheet or net is unrolled, engage hooks or projections on the framework a or on the chassis; or the transverse lath d<1> may be dispensed with and the parallel springs may then be formed at the ends with hooks for engaging a transverse member when the sheet or net is unrolled. The flexible sheet may be of netting &c. extended by springs, or spring wire, or of spring net-work with inserted spring wires, or the unrolling of the flexible sheet may be assisted by coiled springs carried upon the chassis and connected by means of flexible members passing over pulleys to the rear edge of the flexible sheet. A protective screen may be arranged in front of the radiator. The end arms of the framework a may be in the form of leaf springs or strip metal instead of being tubular, or may be provided with springs or rubber elements to act as cushions. The framework a may be provided with rollers or small wheels for contacting the ground when the front wheel springs are unduly depressed.
Patent GB-1170805-A (GB)
Title: Cathode Ray Tubes
IPC: H01J29/02
Filed: 1967-03-10
Abstract: 1,170,805. Cathode ray tubes. COMPAGNIE DE SAINT-GOBAIN. 10 March, 1967 [10 March, 1966], No. 11425/67. Heading H1D. The glass faceplate 6 of a cathode ray tube, having a flat ground or polished inner surface 8 and coated internally with luminescent material 13, is connected to the cone 5 of the envelope by at least one flat-ground intermediate member 10, made of insulating material, e.g. glass, ceramics or steatite, which has one face welded to the periphery of the cone and the other to the periphery of the faceplate. Particularly for colour television tubes, the mask or grid 14 associated with the screen may be supported by embedding it in the welding material between the intermediate ring 10 and cone 5, which since the faces 11, 12 of the ring and face 8 of the faceplate are all flat-ground, may thus be accurately positioned and aligned with respect to the luminescent material 13. The welding material may be a soft glass or a vitro-erystalline substance, e.g. ceramic glass, which may if required be rendered conductive by loading with silver. Further grids may be similarly supported adjacent the faceplate by using additional superimposed intermediate rings, Fig. 7 (not shown). The outer surface of the faceplate may be flat or curved and pincushion distortion may be reduced, for example, by an adjustable external magnetic field.
Patent GB-1137037-A (GB)
Title: Process for the extraction and the concentration of hydrogen fluoride
Inventor: NURY GEORGES
IPC: C01B7/19
Filed: 1967-03-10
Abstract: 1,137,037. Hydrogen fluoride. PRODUITS CHIMIQUES PECHINEY - SAINT - GOBAIN. 10 March, 1967 [11 March, 1966], No. 11464/67. Heading C1A. [Also in Division C2] Hydrogen fluoride in the vapour phase is extracted from a gaseous mixture by a continuous process which comprises simultaneously introducing the gaseous mixture into one end of a counter-current extracting apparatus, introducing a current of a water-insoluble amine which is not combined with any hydrogen fluoride into the opposite end of the apparatus, and introducing a current of the same amine partially combined with hydrogen fluoride into an intermediate part of the apparatus whereby the amine takes up hydrogen fluoride from the gaseous mixture, and part of the resulting current of hydrogen fluoride-combined amine is treated with an acid thus liberating HF and precipitating a compound of said acid with said amine, the uncombined amine is recovered from the said precipitated compound (e.g. by NaOH solution) and passed back to the opposite end of the counter-current apparatus, the remaining current of amine combined with HF is passed to a desorption apparatus which is maintained at a temperature just sufficient to cause part of the HF to separate from the current of amine containing it, the resultant amine partially combined with HF is passed back to the intermediate part of the counter-current absorption apparatus. The desorption apparatus is maintained at a temperature not exceeding 200‹ C. Amines which may be used include N-lauryl (trialkylmethyl) amines, trioctylamines, trinonylamines and trilaurylamines, and can be regenerated during the process with H 2 SO 4  or H 2 SiF 6  acid.
Patent GB-898214-A (GB)
Title: Improvements in or relating to a feeler device responsive to the position of the needle of a galvanometer
IPC: G03B7/12
Filed: 1961-03-29
Abstract: 898,214. Photographic exposure meters. PAILLARD, S.A. March 29, 1961 [March 29, 1960], No. 11490/61. Class 98(1). [Also in Groups XXXVI and XL(b)] An adjustable clamping device responsive to the position of a galvanometer needle 2, comprises a bearing member 3, over which the needle moves, and upon which a feeler wheel 6 rolls until it clamps the needle against the bearing surface. The wheel and bearing surface may be smooth or, as shown, toothed. As described, the wheel is carried on an arm 5 driven through a pinion 4 by a rack 7 which controls the aperture of a camera diaphragm 8. The galvanometer is in such a case photo-electrically operated, to form a semi-automatic exposure setting device.
Patent GB-115268-A (GB)
IPC: A01D57/26
Abstract: 115,268. McMullen, W. J. May 3, 1917. Mowing-machines; haymaking.-The finger-bar B of a mowing-machine has secured to it a curved plate A of steel, iron, zinc, or other suitable material into which the grass passes and by which it is completely turned over and left in regular windrows.
Patent GB-1353791-A (GB)
Title: Digital signal synchronizing system
IPC: H03L7/099
Filed: 1971-04-27
Abstract: 1353791 Digital synchronizing systems; synchronized oscillators XEROX CORP 27 April 1971 [1 May 1970] 11611/71 Headings H3A and H3T A digital synchronizing system comprises a first generator 10 for producing pulses at a frequency Nfb where fb is the mean bit rate of the received input data, a second generator 18 including an astable multivibrator and a first and a second differentiating circuit 54-65 (see Fig. 2) coupled to the output of the multivibrator for producing pulses at a frequency fc less than fb, a frequency divider 12 for producing local clock pulses having an instantaneous frequency of fbŒ(fc/n), a digital phase comparator 26 for comparing the phases of the data and the clock signals, a gating circuit including logic gates 16, 19-22 coupled to the outputs of the first and second generators 10, 18 and the comparator 26 for supplying signals at a frequency Nfb+fc to the divider 12 if the clock lagged the data and at a frequency Nfb-fc to the divider 12 if the clock led the data. In operation, the comparator 26 produces an output at a level 1 on lead 28 if the local clock signal led the input data and an output at a level 1 on lead 30 if the clock signal lagged the data. The correction oscillator 18 produces delete pulses on line 32 and add pulses on line 34 so that in response to the corresponding outputs on line 28 or 30, pulses are deleted or added respectively from the crystal oscillator 10 output applied to NAND gate 16 until the phase condition in respect of the clock and data signals is just reversed.  A synchronized oscillator comprises an astable multivibrator 40, 42 (see Fig. 2) coupled via a diode 50 to the output of a crystal oscillator (10, Fig. 1, not shown). The amplitude of pulses generated by oscillator 10 is selected to be much less the amplitude of pulses produced at the collector of 42. When transistor 42 is on, the diode 50 is reverse biased and when 42 is off, current flows via diode 50 and prior to the completion of the positive portion of the oscillator 40, 42 cycle, it is switched slightly earlier as to be in time synchronism with the leading edge of the oscillator 10 pulses.
Patent GB-1011309-A (GB)
Title: Improvements in or relating to magnetic tape apparatus
IPC: G11B15/28
Filed: 1964-03-19
Abstract: 1,011,309. Drive system for magnetic tape. AMPEX CORPORATION. March 19, 1964 [April 17, 1963], No. 11646/64. Heading G5R. A tape drive system comprises a capstan rotating at a first speed adjacent the tape and a pinch roller which, when disengaged, is driven at a slower speed. In the arrangement shown in Fig. 1 the pinch roller 18 in its disengaged position is driven by a roller 26 driven by a belt drive from the capstan 14 which is driven by a constant speed motor, the peripheral speed of the pinch roller being between 50% and 80% of that of the capstan. When the pinch roller is moved towards the capstan by an actuator 29 the tape 10 is first accelerated by the pinch roller and then by the capstan, thereby giving a smoother acceleration and avoiding tape stretch which occurs if the pinch roller is initially stationary or rotating at the same or a higher speed than the capstan. In a modification, Fig. 4 (not shown), the roller 26 is driven by an idler roller disposed between end rollers on the capstan and on the roller 26. The roller 26 may alternatively be driven by a separate motor. A pair of oppositely rotating capstans may be provided on a tape deck including vacuum chambers and supply and take-up reels and used for storing digital data, Fig. 2 (not shown).
Patent GB-1333182-A (GB)
Title: Method of preparing vinyl chloride polymers and copolymers
IPC: C08F2/18
Filed: 1971-04-27
Abstract: 1333182 Suspension polymerizing vinyl chloride SHINETSU CHEMICAL CO 27 April 1971 [30 Sept 1970] 11678/71 Heading C3P Vinyl chloride is polymerized in aqeuous suspension in the presence of a suspending agent, one or more initiators selected from dialkylperoxycarbonstes, azo-bis-2,4-dimethyl, or -2,4,4-trimethyl or -4-methoxy-2,4-dimethyl valeronitrile, and acetylcyclohexylsulphonylperoxide, one or more C 8 -C 18  fatty alcohols and one or more sorbitan oleates and when polymerization is at least 50% completed (including after completion) there is added one or more reducing agents selected from bisphenol A, hydroquinone and sulphoxylates of formaldehyde condensates.
Patent GB-754672-A (GB)
Title: A centrifugal electric switch
IPC: H01H3/60
Filed: 1954-04-22
Abstract: 754,672. Centrifugal switches; magneticswitches. DUURKOOP, H. J. April 22, 1954 [April 24, 1953], No. 11700/54. Class 38(5) A centrifugal electric switch comprises a permanent magnet 18 which forms part of two parallel magnetic paths, there being an armature and an air gap in each path, the width of the air gap in one path being dependent on the centrifugal forces acting on the armature in that path. When the rotational speed of a motor shaft 15 is low the armatures 19 in a first magnetic path are positioned towards the shaft 15, thus the air gap between the armatures 19 and the members 16, 17 is large and most of the flux emanating from the permanent magnet 18 takes a second magnetic path formed by the members 16, 17 and an armature 13 which is secured to a plate 8. The armature is thereby attracted towards the members 16, 17 and in moving causes a contact 11 to close on a fixed contact 12 by means of a rivet 7 connecting the plate 8 and a member 6 carrying the moving contact 11. When the rotational speed of the shaft 15 increases the air gap between the armatures 19 and the members 16, 17 disappears so that now the majority of the flux from the permanent magnet 18 takes this path. The weakened flux flowing in the second magnetic path is now no longer sufficient to attract the armature 13, thus the armature moves away from the members 16, 17 under the influence of a spring 10 thereby opening the contacts 11, 12. The movement of the armatures 19 is controlled by a screw 23 and a spring 22. The arrangement of the switch is such that the transfer of flux from one magnetic path to the other occurs suddenly thus the movement of the armature 13 is very rapid. In a further embodiment the armature 13 is arranged to move radially.
Patent GB-1188342-A (GB)
Title: Fiber Filler Matter and process of manufacture
IPC: G03C1/775
Filed: 1967-03-13
Abstract: 1,188,342. Coated paper. WEST VIRGINIA PULP & PAPER CO. 13 March, 1967 [16 March, 1966; 17 June, 1966], No. 11756/67. Heading B2E. [Also in Divisions B5 and D2] A particulate material for paper manufacture comprises blushed fine fibres of a cellulose ester. These fibres are white and opaque 0.03 m.m to 1.86 m.m long, 2 to 51 microns wide, interlock to form self-supporting waterleaves, and have a Williams freeness for 1 gram of 23 to 573 seconds at a consistency of 0.1%. They may contain a mineral pigment, particularly clay, calcium carbonate, aluminium silicate, hydrated alumina or titanium dioxide or mixtures. They may be made by spraying a solution of a cellulose ester into a first non-solvent miscible with the solvent of the solution, the solution also including a second non-solvent miscible with both the solvent and the first non-solvent. Solvents referred to are acetone, methoxy-ethyl acetate and ethyl lactate; first non-solvents are water and water-acetone mixtures; and second non-solvents are water, methanol and ethanol. The solution may also contain a wetting agent, e.g. a fatty-acid soap, trisodium phosphate, sodium phosphate, nonyl-phenoxypoly (ethyleneoxy)-ethanol, a polyalkylene glycol or a polyoxyethylenatedalkyl amino-amide, or a plasticizer, e.g. di-n-butyl sebacate. Waterleaf sheets of high opacity may be made from the blushed fibres alone or mixed with conventional wood pulp, with or without a clay filler, and may be coated with an aqueous composition comprising titanium dioxide, clay, starch and latex. The spray solutions used in the Examples comprise (1) acetone, water, sodium stearate and scrap cellulose acetate butyrate containing 20% of plasticizer; (17) cellulose acetate, di-n-butyl sebacate and acetone; (18) acetone, water, cellulose acetate butyrate and sodium stearate; (19) cellulose acetate butyrate, acetone and water; (20) acetone, water, soap, cellulose acetate and plasticizer (di-n-butyl sebacate) in various proportions; (21) acetone, water, sodium stearate, cellulose acetate butyrate scrap, and cellulose acetate containing 6% TiO 2 ; (22) acetone, water, sodium stearate, titanium dioxide and scrap cellulose acetate butyrate; (26-30) acetone, water, sodium stearate, cellulose acetate butyrate and mineral filler, which was titanium dioxide alone (Example 26), or mixed with aluminium silicate (Example 27), clay (Example 28), calcium carbonate (Example 29), or calcined clay (Example 30); (31) acetone, water, sodium stearate, TiO 2  and cellulose acetate.
Patent GB-372535-A (GB)
Title: Improvements in or relating to vehicles
IPC: B60P1/64
Filed: 1931-04-21
Abstract: 372,535. Vehicles with removable bodies ; fastenings. BURGESS, S., 41, St. Vincent Place, Glasgow.-(Athey Truss Wheel Co. ; 130, North Wells Street, Chicago, U.S.A.) April 21, 1931, No. 11762. [Class 108 (i).] A trailer vehicle for use in harvesting comprises a frame supported on wheels 13 having an endless belt tread 14, a tiltable cradle or floor up which a removable loaded body may be drawn by means of a cable and capstan and means locking the removable body in position. The tiltable cradle comprises longitudinal spaced bars 31 shaped at the end as at 30, Fig. 1, so as to rest in the inclined position on the ground. The removable body comprises longitudinal members 42 provided with skids and transverse shafts 44 provided with rollers 45 adapted to run on the members or rails 31. The body is adapted to be drawn up the tiltable cradle by means of a cable 56 and capstan 58 operable from the engine of the tractor. Latches 71, 72 pivoted at 73, 74 are provided with lateral offset projections 76 adapted to engage projections 77 on the body to lock it in position. The latches are simultaneously operable by a rod 75. In another form of latch the rollers 45 are adapted to press down spring-controlled member 89 having cam faces 90, the members springing again in.position to lock the rollers 45 in hookshaped members 84 secured to the trailer frame. The latches may be unlocked by lever 96 by means of a chain 96a from the driver's seat.
Patent GB-566404-A (GB)
Title: Improvements in and relating to control systems for electrically driven cranes, hoists or the like
IPC: B66C13/26
Filed: 1943-07-22
Abstract: 566,404. Control of motors. BRITISH THOMSON -HOUSTON CO., Ltd., and HASTINGS, H. C. July 22, 1943, No. 11925. [Class 38 (iii)] In a control system for a three-phase induction motor used for operating a crane or hoist, and particularly a control system in which, when the crane is lowering its load, the motor is so connected to the line as to produce a torque tending to raise the load, but insufficient to do so, means are provided for automatically applying an electrically-controlled brake in the event of the supply to one of the phase lines of the motor failing. For this purpose a relay may open the circuit of the brake coil when the line currents become unbalanced ; alternatively, an undercurrent relay may be inserted in each phase line, the relays having contacts connected in series both with one another and the brake coil, so that the circuit of the latter is opened when the current in any phase line falls below a predetermined value.
Patent GB-768807-A (GB)
Title: A weaving loom
IPC: D02H13/28
Filed: 1955-04-26
Abstract: 768,807. Warp beams for looms. VYZKUMNY USTAV TVARECICH STROJU A. TECHNOLOGIE TVARENI. April 26, 1955 [July 28, 1954], No. 11983/55. Class 142 (2). The brake drums 3 of a warp beam 4 are detachable and are mounted for rotation in the sides of the loom so that when the beam is removed the drums remain on the loom. A semi-circular extension 5 on the drum and a semi-circular yoke 6 which are hinged to each other and encircle the end of the beam are tightened together by a bolt. The beam has four depressions 10 on its circumference, one of which is engaged by a projection 9 on the inside of the yoke 6 whereby the beam and the drum are locked together.