baber/WOPTO huggingface dataset:
Patent GB-1177134-A (GB)
Title: Well Treating Fluid and methods
Inventor: BUNDRANT CHARLES OLLIE
IPC: E21B41/02
Filed: 1967-02-13
Abstract: 1,177,134. Wells &c. CHAMPION CHEMICALS, Inc. 13 Feb., 1967 [21 Feb., 1966], No. 6857/67. Heading E1F. [Also in Division C7] A well-treating fluid, which in use is applied to the interior of an oil well pipe, comprises at least 4% by weight of a water-insoluble corrosion inhibitor, with a density less than 10 Ib./gal, and a weighting material which is water-soluble or dispersable. The corrosion inhibitor and weighting material are coupled during storage and in oil, but are partible in water. When the fluid is placed in a well containing oil or gas it sinks to the gas or oil/ water interface below the gas or oil in the well, and either there or in the water the inhibitor is released. During production from the well the freed inhibitor rises in the well pipe. Lists of inhibitors weighting materials and dispersing agents whch may be components of the fluid are given. Preferably the weighting material and inhibitor are coupled by an alcohol having 1-18 carbon atoms. Examples of fluid compositions are given.
Patent GB-359356-A (GB)
Title: Improvements in and relating to appliances for playing polo
IPC: A63B59/16
Filed: 1931-03-05
Abstract: 359,356. Polo sticks. MOUNTBATTEN, LOUIS, LORD, Brook House. Park Lane, London. March 5, 1931, No. 6864. [Class 132 (ii).] The head of a polo stick is made oval in cross section with the width greater than the depth thereby enabling the player to impart a greater loft and a better trajectory to the ball. The ratio of width to depth, preferably 6 : 5, may be maintained throughout the length of the head, and the oval may be derived from four circular arcs as shown in Fig. 1. The ends may be bevelled as shown at F, G in Fig. 2.
Patent GB-612016-A (GB)
Title: Improvements in the automatic regulation of electric commutator machines
IPC: H02P9/00
Filed: 1946-03-05
Abstract: 612,016. Automatic control systems for generators and motors. SOC. D'EXPLOITATION DE BREVETS. March 5, 1946, No. 6864. Convention date, March 8, 1945. [Classes 35 and 38 (iv)]  In a commutator electric machine with a field system energized from two auxiliary brushes mounted on a disc and movable, between two stops, in response to variations in running conditions, by a rotating part of the machine through clutch means, a torque limiter is interposed between the clutch and disc. As shown, the D.C. generator shunt field winding 5 is supplied from the movable brushes 6, 7 which, together with the fixed load brushes 3, 4, ride on the commutator 2. The insulating ring 14, which supports brushes 6, 7, is rotatable round the commutator by means of the gearing and shafting 15, 16, 17, 19, 20 and the torque limiter 18. The shaft 21, to which the worm 20 is keyed, embodies splines 31, on which are free to slide longitudinally the conical rollers 20, 30, the compression spring 35, between the shoulder 26, integral with the shaft 21, and the roller 29, urges the latter towards the conical surface 34 on the motor shaft 1. The magnet core 41, energized by the coil 42 connected across brushes 3, 4, is adapted to attract the blade 38, which is hinged at 39, and thus to move it into contact with the roller 30, against the action of spring 53 and assisted by the spring 43. Hence, with sufficiently strong magnetisation of the coil 42, by the output voltage of the generator, the blade 38 urges the roller 30 into frictional contact with the surface 34, simultaneously separating the surface 34 and the roller 29 against the thrust of the compression spring 35. Thus, the direction of rotation of shaft 21 depends upon the deviation of the generator voltage from a datum determined by the setting of adjusting screw 44 and movement of the brush ring 8 is effected, correctively, until the generator output voltage reaches this datum. Hunting of the system is precluded by the air-dashpot arrangement comprising the piston and cylinder 47, 48 connected to the shaft 16 by the bell-crank 49. Upon a reversal of rotation of the dynamo the brushes 6, 7 automatically take up a position symmetrically disposed about the axis Y, Y<SP>1</SP> with respect to their previous setting and the device operates as before. In a modification of this embodiment (not shown), an additional coil 42 is employed, which carries a current proportional to the load current of the generator. In a second embodiment (not shown), motor speed regulation is effected by the movement of field brush gear through a differential and a known centrifugal speed governor which rotates the brush gear correctively through a torque limiter. It is stated that for large motors, this method may be used in conjunction with the method illustrated in Fig. 1 and that the invention may be carried out using only one movable auxiliary brush.
Patent GB-992353-A (GB)
Filed: 1963-02-20
Abstract: The invention comprises piperazine derivatives of the formula <FORM:0992353/C2/1> where at least two of R1, R2, R3 and at least two of R11, R12 and R13 represent alkoxy radicals of 1 to 4 carbon atoms, the remaining symbol in each case represents either a further alkoxy group of 1 to 4 carbon atoms or a hydrogen atom, A is a straight or branched alkylene chain with 1 to 6 carbon atoms and B is a direct chemical bond or the group -OA1- where A1 is a straight or branched alkylene chain with 1 to 6 carbon atoms, and acid addition salts and quaternary ammonium derivatives thereof, and the preparation thereof by reaction of a piperazine derivative of the formula <FORM:0992353/C2/2> with a benzoic acid derivative of the formula <FORM:0992353/C2/3> where X represents a halogen atom, by reaction of a piperazine derivative of the formula <FORM:0992353/C2/4> with a compound of the formula <FORM:0992353/C2/5> or by the esterification of a piperazine derivative of the formula <FORM:0992353/C2/6> with a compound of the formula <FORM:0992353/C2/7> Compounds of the Formula VI may be prepared by reaction of a compound of the Formula VII with a compound of the formula <FORM:0992353/C2/8>  Therapeutic compositions, which have a depressant effect on the nervous system and which, in the form of solutions, may be administered parenterally, contain as the active ingredient the substituted piperazines of the general Formula I above or acid addition or quaternary salts thereof.
Patent GB-551607-A (GB)
Title: Improvements in means for maintaining constant tension in a continuous length of material when electrically driven
IPC: B65H23/195
Filed: 1942-05-20
Abstract: 551,607. Automatic control systems for webdriving apparatus. BRITISH THOMSONHOUSTON CO., Ltd. (General Electric Co.) May 20, 1942, No. 6869. [Class 38 (iv)] Tension is maintained constant in a length of material 10 passing between two electrically driven elements such as rolls 11, 24. A movable member 49a, responsive to a change in tensions, changes the excitation of one of two tachometer generators 38, 39 driven from the respective rolls and differeiitially connected in series with the control winding of an armature reaction excited machine 40, exciting the source of current 29 for one of the driving means, such as the motors 25, 26. To maintain tension when the material is stopped, resistances 43, 46 in parallel in the exciting circuit of the motors 25, 26 are used as potentiometers whereby an adjustable voltage may be maintained in series with the tachometer machines when stationary, and the potentiometer contact 43a is adjustable with the member 49a to maintain constant tension during speed changes. In a modification the machine 40 may excite a booster in series with motors such as 25, 26, which are then supplied in parallel with the other driving motor. To force the leading driving means such as 25, 26 during acceleration and retardation of the material an additional control winding in a machine such as 40 may be energized from a transformer having primary windings connected respectively in parallel with rheostats, such as 35, 36 or in parallel or series with field windings such as 22a, 20a controlling the speed changes.
Patent GB-629553-A (GB)
Title: A hand appliance for unscrewing bottle caps and for like purposes
IPC: B67B7/18
Filed: 1947-03-12
Abstract: 629,553. Wrenches. PALMER, F. R. March 12, 1947, No. 6871. [Class 61(iii)] A hand wrench for unscrewing the caps of bottles, preserving jars etc., comprises a pair of V-shaped jaws 3, 4 with serrated and roughened faces, depending from a lead screw 2 and relatively adjustable in position by rotation of the handle 1 by which the appliance is rotated to unscrew the cap. The movable jaw 4 threadedly engages the screw 2, the jaw 3 being freely rotatable on the plain part 6 of the screw against a thrust surface 5 which may be provided on a collar fixed on the screw. The free end 9 of the screw is shaped like a screw-driver. The Provisional Specification describes a lead screw having right and left handed threads. A wrench having one jaw fixed to the handle on to the screw is also described.
Patent GB-377919-A (GB)
Title: An improved air extractor for buildings or vehicles
IPC: F23L17/02
Filed: 1932-03-08
Abstract: 377,919. Ventilators. MUIRHEAD, J. and MUIRHEAD, D. P., (trading as MUIRHEAD & SONS, J.), 1276, Maryhill Road, Glasgow. March 8, 1932, No. 6905. Addition to 305,958, [Class 25, Chimneys &c.]. [Classes 25 and 137.] In an air extractor as described in the parent Specification, the lower edge of each of the pair of oppositely inclined surfaces 11a is formed as or provided with a gutter or channel 11c extending across the extractor and open at both ends. Rain or the like falling on the cowl member 11 of the extractor is drained away by the gutter and prevented from entering the air passages. In a modification an extractor 21 is attached to each side of an air trunk 20 of quadrilateral cross section and communicates with the interior of the trunk at 22.
Patent GB-548038-A (GB)
Title: An improved manufacture of lubricating oil compositions
Filed: 1940-04-17
Abstract: 548,038. Lubricants; naphthenic ketones. ARNOLD, J. C. (Standard Oil Development Co.). April 17, 1940, No. 6916. [Class 91] [Also in Group IV] Lubricants are improved as to pour point and oiliness by adding a naphthenic ketone made from a naphthenic acid halide and an isocyclic or heterocyclic compound which contains not more than three rings and in which any side chain contains not more than five carbon atoms. Many such compounds are listed, and include hydrocarbons, fluorenone, thiophene, carbazole and furane and also phenols, aromatic and aromatic-aliphatic ethers, aromatic acids, esters, alcohols and ketones; also nitrogen-containing compounds such as aniline, naphthylamine and diphenylamine. The naphthenic ketones may be chlorinated. The condensation is effected with a Friedel-Craft catalyst. Examples are given. Specifications 473,653, [Group IV], and 509,550 are referred to.
Patent GB-657809-A (GB)
Title: Molding apparatus for forming curved shapes such as shoulder pads
IPC: A41D27/26
Filed: 1949-03-14
Abstract: 657,809. Rotary-table moulding presses. MECHUR, B., and RIEDLER, W. March 14, 1949, No. 6956. Convention date, Sept. 21, 1948. [Class 87 (ii)] Apparatus for moulding curved articles such as shoulder pads comprises a central column extending upwards from a base, a sleeve rotatably mounted on the column, which extends beyond said sleeve at each end, a support rotatable with the sleeve and carrying a plurality of pressure and heating moulds continuously in a circular path, each mould comprising a pair of members relatively movable between open and closed positions, and co-operating cam and cam follower means operatively associated with the upper extending end of the said column and the moulds and effective to open them at one point and maintain them closed throughout the remainder of the path. As shown, the base 27 supports a driving motor connected to a clutch 25 having an operating handle 24 and is adapted to rotate the sleeve 30. The rotatable support comprises a lower circular platform 40 and an upper platform 45 interconnected by six guide columns 51. Sleeves 52 are slidably mounted on the columns 51 and are secured to plates 53 which carry the upper heating and pressure members 50. Each plate 53 also carries a vertical rod 54 slidably engaged in a bearing 56 on brackets 57, 58 secured to the platform 45. To the upper end of each rod 54 is pivotally mounted a rocker arm 75 supported by a bracket 73 and carrying a roller 76 engaging the upper surface of the cam 20 which is secured to the upper end of the central column against rotation with the sleeve 30. Inwardly of the bracket 73, each arm 75 has a cross-bar 78 welded thereto and engaged by the upper ends of a pair of tension springs 79 which extend through apertures in the platform 45 and have their ends adjustably secured to a circular flange 47. As each pair of pressure members 50, 60 reaches the loading station, the associated roller 76 rides into a dwell 72 of the cam 20, being pulled downwardly by the springs 79. This separates the members 50, 60 so that the pad may be inserted. The members 50 are mounted on rods 66 suspended from plates 62 which are urged downwards by springs 64 surrounding studs 61 mounted in the plates 53, and the members 60 are supported on rods 69. The members 50, 60 have interengaging complexly curved surfaces with heating elements disposed therealong. Vertical flanges extend from the curved surfaces and have apertured ears 84, 94 which receive the rods 66, 69, and ears 89, 99 engaging the supporting plates 62, 67 to limit the rocking of the members 50, 60.
Patent GB-326341-A (GB)
Title: Improvements in shock absorbers or vehicle spring controllers
IPC: F16F7/04
Filed: 1929-03-04
Abstract: 326,341. Lansing, R. P. March 4, 1929. Vibration-dampers. - In apparatus of the oneway type for checking rebound of vehicle springs in which the frictional resistance increases with the displacement from the normal position, a series of friction discs connected alternatively to the frame and axle are pressed together by a spring and by a stationary screw actuating-member. In the construction shown, a tubular spindle or support 3 is secured to a base 1 bolted to the frame of the vehicle. An operating arm 11, the end of which is connected to the axle. is riveted to a rotatable plate 10, which is mounted on the support 3 and carries splines 14 engaging one set of friction discs 17. The inner parts of the second set of discs 18, arranged alternately with the discs 17, engage splines 19<a> carried by a pressure plate 20 connected by means of a screw to an actuator 32 carried non-rotatably on the support 3. The discs are adapted under certain circumstances to be compressed between the pressure plate 20 and the plate 21 through which the splines 19<a> pass loosely, the heads of the splines being enlarged to limit the separation of the discs. When the operating-arm 11 and plate 10 are turned in an anti-clockwise direction. the drag of the friction discs turns the plate 20 on its screw mounting until it engages a shoulder 32a on the actuator which stops its rotation and also that of the discs 18. This movement of the plate 20 acts through the discs to force the plate 21 outwardly against the pull of the centre bolt 8 and helical spring 4; the friction between the two sets of discs in this way exerts considerable resistance to the movement of the operating-arm. When the arm is rotated in a clockwise direction the pressure plate 20 is rotated on its screw mounting and moves towards the base 1. The end plate 21 then bears on the collar 36 and the pressure on the friction discs is relieved so that further movement of the arm takes place freely. The parts are completely enclosed on the outside by a light casing 15 and on the inside by a cupped washer 43 and felt ring. Specification 241,540 is referred to.
Patent GB-703151-A (GB)
Title: Baby bottle holder
IPC: A61J9/06
Filed: 1949-03-15
Abstract: 703,151. Brackets. LOMAX, C. H. June 13. 1950 [March 15, 1949], No. 7041/49. Class 52(5) [Also in Group XVII] A bracket for supporting a feeding bottle comprises a cradle holding device 41, an articulated extensible arm 31 and a clamp. The arm 31 comprises three rods frictionally sliding in complementary tubes to allow extension and is jointed for movement at least in the plane of the arm and has a frictional ball and socket connection to the holding cradle controlled by a screw 44. The arm 31 is attached to a cot &c. by the U-shaped clamp 12, 15 which has a cylindrical upper part 16, 17 bored at 19 into an enlarged slot 20 in which is a fixed serrated disc 27. A tubular member 21 fixes on the portion 17 and has a knurled disc 22 and a cap 23. A rod 24 extends from the cap 23 through the bore 19 and has a serrated disc 26 on the bottom normally forced to engage the disc 27 by a spring 18. The arm 31 passes through a slot 34 in the member 21 and is attached to a nut 30 on a threaded sleeve 29 extending from the disc 22. Thus the arm 31 can be raised or lowered by turning the disc 22 or rotated by depressing and turning the cap 23.
Patent GB-1447463-A (GB)
Title: Electrical machine
IPC: H02K3/47
Filed: 1974-02-15
Abstract: 1447463 Cooling dynamoelectric machines SIEMENS AG 15 Feb 1974 [16 Feb 1973] 7080/74 Heading H2A In a machine wherein a stator winding 9 is surrounded by an unslotted stator core 8 and has an aperture at one end of sufficient diameter to allow a rotor 1 to be withdrawn therethrough, e.g. for servicing, the winding 9 is provided with thermally insulating material at its inner surface and is embedded in a material which is of greater thermal conductivity than the insulating material. In the high speed permanent magnet D.C. motor shown, the winding 9 is bell shaped and has had plastics material poured about it to make it rigid, and it supports at its inner surface an insulating layer 10, e.g. of asbestos. Thus, owing to the greater conductivity of the plastics material, any heat which is dissipated in the winding 9 tends to transfer radially outwards through the machine towards a cooling duct 7 in the machine casing 6, through which cooling liquid flows. In an alternative arrangement (not illustrated), the layer 10 is omitted and the winding 9 is embedded in plastics material with which has been mixed a substance of high conductivity, e.g. metal powder, the concentration of the conductive substance being greater on the outside of the winding than on the inside. Such a concentration variation may be provided by rotating the winding as the plastics material and the conductive substance are poured thereon, centrifugal effects producing the desired result. The motors may have static electronic commutation (not detailed).
Patent GB-940505-A (GB)
Title: Improvements in or relating to barometric correction mechanisms and altimeters
IPC: G01L7/00
Filed: 1960-02-29
Abstract: 940,505. Measuring altitude electrically. BULOVA RESEARCH & DEVELOPMENT LABORATORIES Inc. Feb. 29, 1960 [April 21,1959],No. 7113/60. Headings G1J, G1L and G1N. A barometric correction mechanism for a pressure sensitive unit having means to detect movement of the unit in response to changes in pressure to produce an indicating signal and means to apply the signal to an altitude indicating device, comprises means to compute a function of a first variable determined by the difference between existing barometric pressure at sea level and a predetermined reference value and a second variable depending on atmospheric pressure corresponding to the momentary altitude of the unit and correction mechanism above sea level and means to correct the indicating device in accordance with the computed function. The capsules 10a- 10c of an altimeter, as they expand and contract, move the core 19 of a differential transformer unit 11, so upsetting the balance between the output of secondaries 21B, 22B, to produce an output which is so applied via an amplifier 14 to a servomotor 15 as to restore the transformer windings to the hull position with respect to core 19, the motor also moving an altitude tape scale 16. An auxiliary tape 32 is calibrated in sea-level barometric values and is adjustable by a knob 34. Rotation of the knob also causes rotation of a nut plate 46 about a fixed screw 45, so raising or lowering the nut and altering the atitude of levers 49 pivoted to the end of the screw. Each lever supports a ball 52 running in a spiral track in a scroll plate 51. The scroll plate supports the differential transformer 21,22 constituting the unit 11 and is rotatable by a pinion 53 operatively coupled to a sprocket 30 which transports the scale 16. By this arrangement, the unit 11 is so moved as to take into account atmospheric pressure at the instantaneous altitude of the aircraft and the instantaneous value of atmospheric pressure at sea level. To compensate for the effect of accelerations on the capsules and core 19, there is provided a similar differential transformer unit 13, the output of which opposes that of the unit 11 and of which the core 48 is supported on a pair of leaf springs 37, 37'. The movement of core 48 is damped by non-magnetic balls 43 immersed in a damping fluid 44 contained in the core. The knob 34 may be operated automatically by mechanism responsive to signals from a ground radio station provided with a barometer to read sea level atmospheric pressure.
Patent GB-557802-A (GB)
Title: Improvements in methods relating to colour photography
IPC: G03C7/392
Filed: 1941-10-21
Abstract: 557,802. Colour photography. KODAK, Ltd. (Eastman Kodak Co., Vittum, P. W., and Wilder, L. S.). Oct. 21, 1941, No. 7151/43. Divided out of 557,750. [Class 98 (ii)] The formation of colour fog in a sensitive silver salt emulsion containing colour coupler prior to exposure and which is exposed and processed by a series of steps including colour development is reduced or prevented by performing the colour development step in the presence of an inhibitor of colour for consisting of an organic ring compound having at least one hydroxyl nuclear substituent which has been incorporated in the emulsion prior to the commencement of and is still present during colour development. In three-colour material comprising three emulsions in one or more layers adapted to record three out of the four spectral regions blue, green, red, and infra-red, the inhibitor may be incorporated in one, two, or all of the layers. Suitable compounds are hydroquinone, n- or iso-amyl hydroquinone, lauryl hydroquinone, n-heptyl hydroquinone, diamyl hydroquinone, dilauryl hydroquinone, di-n-heptyl hydroquinone, di-isooctyl hydroquinone α-tocopherol, ascorbic acid, and dodecyl catechol. A compound having a chain of at least 5 carbon atoms is preferably used, but a compound of lower molecular weight is preferably if it is to be uniformly distributed throughout the film. In emulsions containing a coupler incorporated in a water-insoluble binder dispersed as particles in the emulsion as in Specifications 524,154, 524,554, 524,555, 540,368 and 541,589, the compound may be added to the emulsion or else to the mixture of the water-insoluble binder and coupler before dispersion in the emulsion. In a modification, the compound may be introduced into the emulsion after coating and before processing, e.g. by bathing the sensitive material in an aqueous solution containing hydroquinone, potassium bromide, and sodium sulphite. The solution should be applied immediately prior to colour development with little or no washing therebetween. The compound may also be added to a processing bath which immediately precedes the colour development step. An opaque support, e.g. paper, may be used. The preparation of the compound is as described in Specification 557,750. Specifications 503,752 and 505,834 also are referred to.