baber/WOPTO huggingface dataset:
Patent GB-1225575-A (GB)
IPC: C07C51/367
Filed: 1969-05-20
Abstract: 1,225,575. Aryloxyalkanoic acids. PARKE DAVIS & CO. 20 May, 1969 [21 May, 1968; 24 April, 1969], No. 25760/69. Heading C2C. Novel compounds I in which n is 3, 4, 5 or 6; R is H, a salt forming cation, or C 1-6  alkyl; and Ar is phenyl or a group II: in which R 2  is C 1-6  alkyl or halo in the 2- or 3- position and R 3  is C 1-6  alkyl or halo are prepared (1) by reaction of an alkali metal derivative of compound with a compound (2) by esterification of the compound I where R is H to give a compound where R is alkyl; (3) by hydrolysis of the compound I where R is alkyl to give a compound where R is H or a cation. Intermediates isolated are 3-(carvacryloxy). propyl bromide, prepared from carvacol and 1- bromo-3-chloro-propane; 3-(2-t-butyl-6-methylphenoxy) propyl chloride; 3-(2,5-di-t-butyl-phenoxy) propyl chloride; 3-[(5-chloro-o-tolyl) oxy]- propyl chloride; 3-(3,5-dichlorophenoxy) propyl bromide; 4,(2,5-xylyloxy) butyl bromide; 5- (2,5-xylyloxy) pentyl bromide; 6-(2,5-xylyloxy)- hexyl bromide and 6-(2,5-dichlorophenozy)-hexyl bromide, all prepared similarly to the first-named intermediate. Pharmaceutical compositions comprise a compound I together with a suitable carrier, are administered orally or parenterally and are effective in reducing the serum triglyceride level.
Patent GB-1439358-A (GB)
Title: Electric circuits
IPC: G01R19/00
Filed: 1973-05-30
Abstract: 1439358 Centrifugal analyzer; determination of glucose UNION CARBIDE CORP 30 May 1973 [31 May 1972] 25805/73 Heading G1B [Also in Division G4] A centrifugal analyzer comprises a rotory PTFE disc having cavities 3, 5 into which reagents are placed and chambers 302, into which the reagents are forced on rotation, connected by passages 306 with cuvettes 9. The course of the reaction is followed by measurement with a photo-multiple 13 of light from lamp 11 transmitted through the curvettes. The determination of glucose in blood serum in the above apparatus is described using a reagent containing NADP (nicotineamide adernine dinucleotide phosphate), hexokinase, glucose-6- phosphate dehydrogenase and MgSO 4  in a triethonolamine buffer at pH 7À5. The resulting reduction of NADP is followed at a wavelength of 340 nm.
Patent GB-984610-A (GB)
Title: Improvements in or relating to cutting tools
Inventor: WALLER DENIS EDMUND
IPC: B23K11/30
Filed: 1963-06-28
Abstract: 984,610. Facing-cutters. A. E. WALLER ENGINEERS Ltd. June 28, 1963, No. 25857/63. Heading B3C. An electrode &c. resurfacing tool comprises a holder 6 and two cutters 7, 8 removable for resharpening. The cutters are received in slots 13 in the holder and have curved cutting edges 9, 10.
Patent GB-971276-A (GB)
Title: Optical comparison apparatus
IPC: G01N21/956
Filed: 1962-07-05
Abstract: 971,276. Optical comparators. E.SICK. July 5, 1962 [Aug. 9, 1961], No. 25878/62. Heading G2J. A device for visually compairing a test object 1 with a master object 2 comprises means for illuminating them through an apertured support 11 and passing light from object 1 via mirrors 14, 4, lens 6, and mirror 10 to a viewing screen and light from object 2 via mirrors 15, 16, lens 6 and mirror 10 to said screen, the two light paths being equal. The images formed on the screen appear to be superimposed but are formed alternately by a semicircular mirror 4 being rotated at a speed greater than 16 cycles per second.
Patent GB-518795-A (GB)
Title: Improvements in or relating to compressed air operated trailer brakes
IPC: B60T13/58
Filed: 1938-09-05
Abstract: 518,795. Fluid-pressure brakes. KNORR BREMSE AKT.-GES., and JANDER, H. Sept. 5, 1938, No. 25915. [Class 103 (i)] Compressed air brakes on a trailer vehicle are controlled by the pressure in a hydraulic brake system on the tractor vehicle by a valve which releases compressed air from 'the trailer' brake pipe to apply the brakes, the application being graduated in dependence on the hydraulic pressure. The system shown comprises hydraulic brakes on the tractor applied by a pedal operated master cylinder and a trailer brake valve, Fig. 2, connected to the hydraulic pipe line at 11, 12, to the compressed air trailer brake pipe at 14 and to a compressed air reservoir at 13. The valve comprises a piston 23 connected through a lever 22 and spring 21 to a piston 19 subject to the pressure in the brake pipe 14, and to that of a spring 24. The valve 16 by which the reservoir supplies the brake pipe is normally open as shown. When the hydraulic pressure on the piston 23 is initially increased the piston 19 is moved to the right seating the valve 16 and moving away from the valve 17 to connect the, pipe 14 to atmosphere through the piston bore 18 thus applying the trailer brakes. When the pressure in the pipe 14 has fallen to a value corresponding to the hydraulic pressure the piston 19 moves to seat the valve'17 without re-opening the valve 16 The piston 23 has a relatively large area and the resistance to movement of the piston 19 is small so that the trailer brakes are 'initially applied before the tractor brakes. The resistance to movement of the piston 23 subsequently increases by the engagement of a tappet 25 with a spring-urged plate 28 and the tractor brakes are then applied. The position of the plate 28 and the pressure of the spring 29 are adjustable.
Patent GB-1247416-A (GB)
Title: Electromechanical transducer
IPC: B64D45/00
Filed: 1969-05-21
Abstract: 1,247,416. Measuring angular displacement electrically. BENDIX CORP. May 21, 1969 [May 29, 1968; Aug. 23, 1968], No. 25916/69. Heading G1N. A trandsucer for measuring the angle of attack of an aircraft comprises a rotary differential transformer whose rotor is a cylindrical iron core with an axial flat, attached to a wind vane, and located inside a wound stator, the circuitry including a servomotor which causes the stator to follow angular displacement of the rotor and also drives an output synchro element. As shown Figs. 2, 6 , the stator 16, mounted on bearings 13, has four poles 17 on each of which is wound a primary winding a -d and secondary winding A-D. The rotor 18, mounted on bearings 19 and attached to the wind vane 21, comprises a ferromagnetic cylindrical rod with a flat 20. The primary windings a-d are connected in series and fed with A.C. from a source 41, Fig. 7: the secondary windings A-D are connected in pairs in opposition to give no resultant output signal when the flat 20 is as shown. When the wind vane 21 and rotor 18 are displaced by a change in wind angle the secondary windings produce an output signal which is amplified at 42 to energize motor 39 and drive the stator 16 via gearing G until the output signal is again zero. The angular movement of motor 39 is also used to drive output potentiometers or synchros. In another embodiment the rotor has two diametrically opposite poles and the stator has eight poles of which alternate ones are wound with a coil, the four coils being connected in series and centre tapped to form one branch of a bridge network. Angular displacement of the wind vane and stator produces an unbalanced signal which is used to energize a servomotor to restore bridge balance. As shown, Fig. 2, the rotor of the transducer is attached to a wind vane 21 by two V-shaped crossed groves 23, 24 carrying metal dowels 25, 26 to ensure accurate alignment. The wind vane elements 28, 29 have a triangular cross-section.
Patent GB-924587-A (GB)
Title: Acoustic transducer
IPC: H04R17/00
Filed: 1961-07-18
Abstract: 924,587. Piezo-electric transducers. CLEVITE CORPORATION. July 18, 1961 [July 27, 1960], No. 25976/61. Class 40 (4). In a piezo-electric transducer, intended primarily for sub-aqueous use, two dish-shaped housing sections 10, 11 are held together by a bolt 30, preferably of nylon, to apply a compressive bias to an expander element 20, which element prevents the two housing sections from coming into contact with each other during operation. The element 20 preferably consists of two annular rings 21, 22 of barium titanate or lead zirconate titanate mounted end to end and connected electrically in series or in parallel, as desired. The housing sections are of relatively stiff material such as aluminium or plastics material and the bolt 30 is less stiff than the element 20. The housing sections move as pistons for frequencies up to 15 kc./sec. Sealing means 36, such as a rubber band, excludes dirt and water.
Patent GB-743644-A (GB)
Title: Improvements in or relating to ore cutting, shearing or loading machines
IPC: E21C29/04
Filed: 1951-11-07
Abstract: 743,644. Mineral-mining apparatus. SUTCLIFFE, Ltd., R., and BAINES, L. Oct. 30, 1952 [Nov. 7, 1951], No. 26104/51. Class 68(1) To advance an ore-cutting or loading machine 1 there is provided on the machine a double-acting piston cylinder unit 5, 6, the piston rod 6 of which projects from either end of the cylinder and is connected either directly or indirectly by a chain 7 to an endless cable that extends the length of the face. At each end of the face the cable passes about a pulley wheel, 8. 9 provided with a pawl and ratchet mechanism, the mechanisms being so arranged that the endless cable can move in one direction only. The pulley wheel mountings are adjustable to enable the tension in the cable to be varied. Depending upon the setting of the pawl and ratchet mechanisms, movement of the piston relative to the cylinder results in the advance of either the machine with respect to the then stationary rope or vice versa, so that the machine intermittently along the face. An automatically-actuated reversing valve alternately supplies fluids under pressure from a high-pressure pump to the cylinder to cause movement of the machine and from a low-pressure pump to cause movement of the cable, the pumps being incorporated in the machine. Reversing the direction of motion of the machine is carried out by adjusting the pawl and ratchet mechanism so that the cable can move in the reverse direction only.
Patent GB-265507-A (GB)
Title: Rotary deep well drilling apparatus
IPC: E21B10/34
Filed: 1925-11-02
Abstract: 265,507. Reed, C. E. Nov. 2, 1925. Borehole apparatus.-A rotary well drill comprises a cage mounted in a recess in the body of the apparatus and carrying a rotary reamer, and means for holding the cage in position. The drill head 1, Fig. 1, is provided with rolling cutters 6, 16 and a core tube 27 which may be removed if desired, and is threaded to a reamer block 46 provided with lateral recesses receiving cages 45, the ends of the cages having grooves which slidably receive bearing pins 49, 50 for rolling reaming-cutters 44; a plug 52 holds the pins 49 and similar plugs may be provided for the pins 50. A sleeve 58 holds the cages and the core tube in position. Flushing fluid passes round the core tube and through ports 3<x>. In the modification shown in Fig. 2, the sleeve 58 and core tube are omitted, and the cages 45 are pressed into operative position by a block 53 pressed by a spring 54 bearing against an adjustable abutment 55, the cages having dovetail dowels 56 engaging grooves in the block 53 or having at their upper ends fins engaging guide grooves in the reamer block; in this arrangement, when the tool is being withdrawn from a well, on engagement of the cutters 44 by the well casing, the cages recede into the reamer block to permit passage of the tool through the casing. Specifications 265,274 and 265,505 are referred to.
Patent GB-430648-A (GB)
Title: Improvements in or relating to cameras with focal plane shutters
IPC: G03B9/44
Filed: 1933-09-22
Abstract: 430,648. Photographic cameras. MAYO, A. C., 28A, Onslow Road, Richmond, Surrey. Sept. 22, 1933, No. 26158. [Class 98 (i)] A photographic camera with a focal plane shutter comprises a back - plate with a picture aperture, means to hold a light sensitive surface against the back of the picture aperture, a shutterplate having an exposure aperture therein slidable in front of the back-plate, a cover-plate slidable on the shutter-plate to cover the exposure aperture, and means to move the cover- and shutter-plates together with the exposure aperture closed across the picture aperture into a set position, to uncover the cover-plate from the exposure aperture, and to return the plates together to make the exposure. As shown in Figs. 3 and 4, the shutter comprises a curved shutter plate 40 slidable over the back-plate 13 having the exposure aperture 16 therein and provided with an aperture 45. A curved cover-plate 41 slidable over the plate 40 has an aperture 46. The setting knob 50 on a spindle 51 is connected to a setting lever 52 comprising a yoke portion 53 and lever arms 54, 55, carrying forks 56, 57 engaging ears 58, 59 on the plate 41. Attached to the lever 55 is a spring 60. Ears 61, 62 on the plate 40 lie behind the forks 56, 57. The catch 48 is operated by a trigger 66 pivoted on the side wall of the camera. The trigger-plate 68 has an arm 69 carrying an auxiliary safety shutter 70 spring urged to cover the opening 37. Rotation of the knob 50 moves the plate 41 to bring the apertures 45, 46 out of register whereon the plates 40, 41 move together across the aperture 16. The speed is set by pressing inwardly the knob 50 against the spring 63 so that the face 65 engages the ear 62 and prevents the plate 41 being retracted by the spring 60 when the knob 50 is released. For a longer exposure the knob 50 is not pressed inwardly. On pressing the trigger 66 the plates 40, 41 slide together across the aperture 16. The spring 49 is provided to keep the plates out of register during setting. A view-finder pivoted to the side of the camera engages the trigger 66 when folded to prevent operation. Slidable in a lens-mounting 31 fixed to the front plate 25 is a lens-tube 32 carrying a lens 33. The tube 32 is normally held retracted against the spring 34 by a lens cap 35. A diaphragm 36 is provided. The film spools are mounted in slotted lugs 17, 18, and the film is held against the plate 13 by springs 23, 24. Two number windows 21, 22 are provided. The parts are held together by two long screws 86, 87. A shutter of a similar kind with flat plates is described in the Provisional Specification. Specification 128,938, [Class 98 (i)], is referred to.
Patent GB-485520-A (GB)
Title: Improved device for determining the height of heels for shoes
IPC: A43D1/02
Filed: 1937-09-28
Abstract: 485,520. Measuring feet for height of shoe heel. MATTHIAS, E. Sept. 28, 1937, No. 26266. Convention date, Oct. 15, 1936. [Class 17 (iii)] The heel height for a foot is determined by placing the heel of the foot in the relaxed condition on the top of a plunger 2 which is pressed upwards, e.g. by means of a spring, to project normally a certain distance above the top of a casing 1, the forward end of the foot resting on a spring-supported abutment 13 which may be fixed or floating. Consequent depression of the plunger 2 causes a rack 3 depending therefrom to turn a pinion 5 fast on a shaft 7 supported in a bush inside the casing, both the shaft 7 and bush carrying, outside the casing 1, hands, which are moved thereby over a calibrated dial to indicate the extent of downward movement of the plunger 2. If the abutment 13 is movable it may, when the foot is in measuring position with the plunger depressed to correct heel height, close an electric circuit to give a visual or audible signal of the completion of the measurement.
Patent GB-146766-A (GB)
Title: Improvements in and connected with hand operated starting devices for internal combustion engines
IPC: F02N1/02
Filed: 1919-10-27
Abstract: 146,766. Downes, J. Oct. 27, 1919. Turning-gear.-In order to prevent unauthorized starting, the starting-handle is separate and detachable and the co-acting parts of the handle and the starting-device are provided with ribs or castellations adapted to register with each other. In the form shown, the enlarged end d of the starting shaft is provided with ribs e engaging grooves in a sleeve c freely rotatable in a fixed casing a, and the starting shaft is held in the portion shown by a spring f. The boss of the starting- handle, Fig. 3, has ribs k corresponding to the ribs e and a reduced part i for engagement with a recess h in the shaft a. When the handle isengaged with the shaft a and pushed inwards against the spring f, the ribs k enter the grooves in the sleeve c, and the handle can be turned to rotate the shaft b and start the engine.
Patent GB-925423-A (GB)
Title: Improvements in or relating to basic refractory bricks
Inventor: EICHLER BERTOLD
IPC: B28B23/00
Filed: 1960-07-29
Abstract: 925,423. Refractory bricks. GENERAL REFRACTORIES Ltd. May 25, 1961 [July 29, 1960], No. 26403/60. Class 51 (2). A prefired basic refractory brick comprises a section of chrome/magnesite moulded alongside a section of magnesite or magnesite/chrome, there being over at least the major part of the length of the brick at least one section of one of the materials alongside at least one section of the other material. The bricks shown, in which a, b is the hot face, have two sections, one of each material, keyed together by a dovetail joint, the male portion of the joint being on the magnesite or magnesite/chrome section. When the bricks, which may be tapered, are laid together to form an arch or crown they are arranged to form a chequer-board pattern of the two materials, Fig. 5 (not shown). A dividing plate shaped to the required dove-tailed interface is used to separate the two materials during moulding, Figs. 2 and 3 (not shown), the plate either being removed before pressing or left in place.
Patent GB-728353-A (GB)
Title: Polymers
IPC: C08F20/54
Filed: 1953-09-25
Abstract: N-Benzylacrylamide is polymerized alone or together with other ethylenically unsaturated compounds such as acrylonitrile, methacrylonitrile, methyl acrylate and methacrylate, and vinyl acetate.  Polymerization may be carried out in bulk, solution, dispersion, or suspension, preferably in an aqueous medium which may contain a solvent such as dimethyl formamide, and a catalyst such as ammonium or potassium persulphate, and advantageously a reducing agent such as sulphur dioxide, sodium sulphite, and potassium or sodium metabisulphites.  Preferred copolymers are those with acrylonitrile in which the molar proportion of acrylonitrile is at least 50 per cent, from which filaments and films may be formed from solution in solvents such as dimethyl formamide or dimethyl formamide diluted with more than its own volume of nitromethane or cyclohexanone, ethylene carbonate or ethylene carbonate diluted with more than its own volume of acetonitrile, nitromethane or nitromethane dissolved in more than its own volume of cyclohexanone, acetonitrile or formic acid diluted with more than their own volume of nitromethane, and dimethyl sulpholane, the choice of solvent or mixture of solvents depending on the proportion of acrylonitrile in the polymer.
Patent GB-297387-A (GB)
Title: An improved method for producing playing courts
IPC: E01C13/06
Filed: 1928-09-15
Abstract: 297,387. Otto, K. W. Sept. 20, 1927. Hard tennis courts.-Tennis and like courts are formed with a double upper layer 1, 2, the top layer 1 being of pervious material and penetrating at a number of points the less pervious material 2 which is laid on a bed of ashes or like material. The penetrations are preferably conical with the apices up or down, or they may be parallel. They may be made by forming holes in the layer 2 by means of a tapered iron bar or tube, and filling the holes with sand or gravel. In another form, separate cones, Fig. 2, are used instead of penetrations, and are placed base downwards on the ash bed and the layer 2 is formed around them. The cones or frusta are made of fired clay, plaster, or sheet metal with drainage openings and grooves in the sides; the upper surface may be depressed and furnished with a drainage hole and be filled with small stones.
Patent GB-645193-A (GB)
Title: Method and device for preparing white factis
Filed: 1947-10-02
Abstract: 645,193. Pug mills for preparing white factis. BATA, NARODNI PODNIK. Oct. 2, 1947, No. 26573. Convention date, Oct. 14, 1946. [Class 86] A machine for the preparation of white factis from sulphur monochloride and fatty siccative or half-siccative oils, comprises a tapering worm operating in a wholly or partly tapering cooled chamber to stir the materials together and force them through an extrusion outlet 4. The materials are fed in through separate inlets 1, 2 and the hydrogen chloride generated is drawn off through an outlet 3. The extrusion outlet 4 may be adjustable.
Patent GB-866754-A (GB)
Title: Improvements in or relating to governors or other speed sensitive mechanisms
IPC: G05D13/10
Filed: 1958-08-20
Abstract: 866,754. Centrifugal governors. MONOCAM Ltd., and BRADBURY, C. H. Aug. 12, 1959 [Aug. 20, 1958], No. 26813/58. Class 57. A centrifugal governor for a fuel injection pump comprises a pair of main weights 17 and a pair of auxiliary weights 18, the latter acting on the governor sleeve 21 through a spring 32 and being constrained against outward movement beyond a predetermined limit. The weights 17 and 18 are carried respectively by bell-crank levers 13 and 14 pivotally mounted on a disc 12 on the governed engine crankshaft 11 and actuate a sleeve 21 loaded by an adjustable governor spring 22 and controlling a lever 25 connected to the fuel pump control rod. The levers 13 and 14 respectively bear against the sleeve 21 and against segments 29 slidable in grooves 31 in the sleeve and pressed outwardly therefrom by a spring 32 compressed between flanges 33 on the segments and a circlip 34 on the sleeve. As the speed rises to a predetermined idling speed both the main and the auxiliary weights move outwardly and act on the sleeve 21 but at a predetermined amount above idling speed further outward movement of the auxiliary weights 18 is prevented by the levers 14 engaging stops 36 on the disc 12, the load on the sleeve 21 then being the sum of the centrifugal force due to the weights 17 and the load on the spring 32.
Patent GB-195664-A (GB)
Title: Improvements in toothed gearing
IPC: B64D27/00
Filed: 1921-10-11
Abstract: 195,664. Royce, F. H., and Rolls-Royce, Ltd. Oct. 11, 1921. Toothed gearing. - In reduction gearing for use on aircraft &c. the crank-shaft b drives the propeller shaft c through single helical reduction gearing b<4>, d<5>, d<6>, c<12>, two or more symmetrically arranged lay shafts d<1> carried in ball bearings in a subdivided casing being used. The direction and inclination of the hedical teeth are so arranged as to prevent end thrust on the lay shafts, one or both of the wheels d<6>, d<5> being splined the@eon and separated by springs d<9>, which serve to equalize the torques passing through the several lay shafts and to prevent shocks by allowing axial movement of one or both of the wheels, such axial movement being limited by sleeves d<8>. Buffer springs may be arranged between the wheels d<5>, d<6> and the lay shaft bearings. A ball bearing c<2>, a roller bearing c<6>, and a thrust bearing c' are provided for the shaft c. Spur gearing may be used, the lay shaft wheels sliding on inclined splines on their shafts.
Patent GB-1354765-A (GB)
Title: Process for the production of polymer solutions
IPC: C08F2/06
Filed: 1971-04-19
Abstract: 1354765 Solution polymerization BAYER AG 19 April 1971 [16 April 1970 26899/71 Heading C3P [Also in Division B2] Polymer solutions are prepared by free radical polymerization of monomer in the presence of (1) a halogen-containing phosphoric acid ester, and (2) a halogen-containing solvent distinct from said ester. In examples, the ester used is tris-(dibromopropyl) phosphate or chloroethyl bromoethyl bromopropyl phosphate; the solvent is chloroform, chloroform/ethanol, trichloroethylene or perchloroethylene; the catalyst is azobutyronitrile, lauroyl peroxide or benzoyl peroxide; and the following copolymers are prepared; (1) styrene/maleic anhydride, (2) and (3) styrene/monoethyl maleate, (4) styrene/acrylic or methacrylic acid, (5) styrene/ ethyl acrylate/acrylic or methacrylic acid, and (6) styrene / methacrylic acid / hydroxypropyl methacrylate / N-methylol methacrylamide methyl ether.