baber/WOPTO huggingface dataset:
Patent GB-1349679-A (GB)
Title: Extrusion of hollow products
IPC: B29C48/90
Filed: 1971-04-19
Abstract: 1349679 Sizing extruded tubes DEMAG AG 19 April 1971 [5 March 1970] 23271/71 Heading B5A A plastics tube 19, extruded from a die head 18, is sized by contact with a part 2 of an inner mandrel and a part 1 of an outer die and then cooled by fluid admitted to spaces 7, 5, sealed downstream to the tube 19 by seals 10, 9, and respectively defined between the inner and outer surfaces of the tube 19, and outer and inner surfaces of members 6, 3 of the mandrel and die which, in the downstream direction, are of progressively increasing spacing from the tube 19. The mandrel parts 2 and 6 are axially adjustably mounted on a tube 8 secured at a flange 35 to the die head 18, and the die parts 1 and 3 are secured at a flange 36 to the die head. Cooling chambers, e.g. 37, 38, are also provided within the mandrel parts 2 and 6, and around the die parts 1 and 3. The space between the flange 35 and mandrel 2 may be supplied with supporting air for the tube 19. The outer and inner surfaces, of the parts 6, 3, may be of conical, or stepped configuration to provide the increasing spacing from the tube 19. The cooling agent is conveyed to and from the apparatus through connections 11 to 17, and is preferably fed under pressure to be sprayed into the wall of tube 19, through feed conduits distributed around the periphery. In the Fig. 1 embodiment helical ribs 4 guide the coolant through the chambers 7, 5. In the Fig. 2 embodiment (not printed), the ribs 4 are omitted, and coolant is supplied to the various chambers within the extruded tube 22 by telescopic tubes or flexible conduits which pass through the extrusion head (24).
Patent GB-614848-A (GB)
Title: Improvements in or relating to moulding liquid metal
IPC: B22D17/00
Filed: 1946-08-06
Abstract: 614,848. Casting; forging. DUFFIELD, F.L. Aug. 6, 1946, No. 23276. [Classes 83 (i) and 83 (iv)] Moulds; castings; forging- dies.-Apparatus for moulding molten metal comprises a trough substantially V-shaped in cross-section for holding the metal and means for moulding it in said trough. The mould comprises a right - angled trough A with movable ends B, the shorter leg of the trough having a refractory facing D. The mould is mounted by means of brackets E on a cradle F which is rotatably mounted in pedestals H by hollow trunnions G. Molten steel is poured into the mould as shown at 2, Fig. 2, and is pressed into the form of a plate 3 between the longer leg of the trough and a ram C. On its operative stroke, the ram moves the trough ends B outwardly against the action of springs J. As the ram is withdrawn, the altered position of the charge having upset the balance of the trough, the cradle F rotates and through a lever X and connecting members Y raises one end of a hinged table T so that the larger leg of the trough and the table are in the same plane and the plate 3 slides from the trough to the table as shown in Fig. 3. During this rotation of the cradle, each end B of the trough is further withdrawn by means of a screw L formed at the end of a spindle K on which the end is mounted and engaging within a screwed bracket M, Fig. 1. During the first outward movement of each end B against the spring J, the bracket M moves along a slide P, but is held stationary by a pawl O during the second movement. After the discharge of the plate 3, the cradle F is returned by a counterweight S, and a member Q secured to the spindle K engages and releases the pawl O. Driven rollers W project through the table T in its lowered position and move the plate 3 away to a conveyer. The limbs of the trough A may be water-cooled.
Patent GB-740730-A (GB)
Title: Improvements in double twist throwing spindle mechanisms for use in textile spinning
IPC: D01H1/10
Filed: 1953-08-24
Abstract: 740,730. Double twist spindle. SOC. D'ETUDES ET DE RECHERCHES DE MATERIEL TEXTILES. Aug. 24, 1953 [Sept. 4, 1952], No. 23304/53. Class 120 (2). A double twist spindle in which the yarn bobbin is located between a front and a rear disc is provided with a balloon limiting ring located approximately midway between the two discs and axially adjustable about this mean position the ring having an internal diameter at least approximately equal to the external diameter of the front disc. In the arrangement shown the ring 11 is formed from a piece of round section wire the ends of which are located in a support member 12 held in position on a rod 13 by nuts 14 and 15. A brake mechanism for braking the spindle consists of a pad 16 and a bell-crank lever 17 subjected to the opposed actions of a spring 18 and a control rod 19. The latter carries an abutment 20 which can be engaged with a plate 22 to hold the brake in the " on " position.
Patent GB-732561-A (GB)
Title: New and useful ester-salts of phosphoric acid
Inventor: ZENFTMAN HENRYK
IPC: C07F9/12
Filed: 1952-09-17
Abstract: The invention comprises ester-salts of phosphoric acid of the general formula <FORM:0732561/IV (b)/1> in which R1 is an alkyl group containing not more than 12 carbon atoms and R2 is an optional alkyl substitutent in the ortho position to the group containing the phosphorus atom. Such compounds are obtained by dissolving the corresponding p-tertiary octyl-phenyl alkyl hydrogen phosphate or its alkyl derivative in a molecular equivalent of sodium hydroxide solution, adding the resulting solution to an excess of the aqueous solution of a water-soluble cobaltous salt, and filtering and drying the resulting precipitate.  An example describes the preparation of cobaltous p-tertiary octylphenyl ethyl phosphate by this method.  The products may be used as wetting agents for pigments in non-aqueous liquids, driers for drying oils, surface tension reducing agents and plasticizers.  Specifications 699,080 and 713,757 are referred to. The Provisional Specification also states that R1 may represent a halogen or hydroxy derivative of the alkyl group specified.ALSO:Cobalt ester-salts of phosphoric acid of the formula <FORM:0732561/III/1> in which R1 is an alkyl group containing not more than 12 carbon atoms and R2 is an optional alkyl substituent in the ortho position to the group containing the phosphorus atom may be used as wetting agents for pigments in non-aqueous liquids and as driers for drying oils.  The preparations of such compounds is described (see Group IV (b).  Specifications 699,080 and 713,757 are referred to.  The Provisional Specification also refers to halogen or hydroxy derivatives of alkyl groups as being represented by R1.
Patent GB-967863-A (GB)
Title: Clutch mechanisms
Inventor: LIDDINGTON WILFRED
IPC: F16D15/00
Filed: 1962-06-18
Abstract: 967,863. Friction clutches. BRECKNELL, WILLISS & CO. Ltd. May 6, 1963 [June 18, 1962], No. 23322/62. Heading F2C. A clutch comprises an inner member 2 rotationally carrying at least one part 4 movable radially by axial movement of a plunger 5 to engage a clutching element 3 with the inner periphery of an outer member 1. The parts 4, three of which are shown, are substantially T-shaped and have curved head surfaces 9 to promote wedging of a ball or roller clutching element 3 against the inner surface of the member 1 in the direction of drive. The plunger 5, which has two diameters 5, 10 for engaged and disengaged conditions, is moved axially by a rack 11 and pinion, a similar clutch being actuated by the remote end of the rack. The two outer members 1 may be V-belt pulleys clutchable to shafts 2 supporting grinding wheels, the two pulleys being driven through a countershaft from a single electric motor.
Patent GB-877518-A (GB)
Title: Improvements relating to cathode-ray tubes
Inventor: TURNER GEORGE CHRISTIE
IPC: H01J29/18
Filed: 1959-07-08
Abstract: 877,518. Cathode-ray tubes; electroluminescent screens. FERRANTI Ltd. July 7, 1960 [July 8, 1959], No. 23402/59. Class 39(1). A cathode-ray tube has a screen comprising a plurality of strips 1 of transparent electrically conductive material mounted on a transparent base 2, a layer of an electroluminescent phosphor 4, a layer 5 of electrically insulating material which becomes conductive when subjected to electron bombardment, and a layer 6 of electrically conductive material, the electron beam' in operation, being incident on the layer 6, and electrical connections from the exterior of the tube to each of the strips 1 and to the layer 6. In operation channels carrying alternating signals which it is desired to display are connected to the strips 1 and the signal is thereby displayed when the scanning beam impinges on the bombardment induced conductivity material overlying the energized strip and its associated phosphor. The layer 5 may be of silica and the transparent strips 1 of gold.
Patent GB-800535-A (GB)
Title: Improvements in or relating to apparatus for measuring or sensing electrical power, particularly for overload protection
IPC: G01R21/00
Filed: 1955-08-16
Abstract: 800,535. Power measurement. BRILL, E. C. Aug. 16, 1955 [March 24, 1955], No. 23631/55. Class 57. [Also in Group XXXVII] Apparatus responsive to the instantaneous power in a single or plural phase A.C. circuit for operating indication or protective cut-out devices comprises voltage and current transformers producing alternating signals representing load voltage in current and phase, a peaking circuit converting the voltage signal into a train of sharp pulses corresponding thereto in amplitude and phase, a limiting half-wave suppression circuit converting the current signal into a train of corresponding half-waves, and an addition circuit superimposing each pulse on a corresponding half-wave; the instantaneous amplitude of each composite signal being a function of the true value of instantaneous power in the circuit. In Fig. 1 a three-phase supply 10 is connected to a motor load 14, in which current leads voltage, over circuit-breaker contacts 12, and a voltage transformer 18 energized from adjacent phases produces an alternating signal applied to a phase-shifter 20 adjustable to compensate for inherent phase shifts of the circuit and a peaking circuit 22, together comprising a capacitance in series with a linear inductance and a saturable reactor (Fig. 2 not shown); the signal across the latter comprising opposed sharp peaks corresponding in amplitude and phase to the voltage signal, and the negative-going peaks being suppressed by an appropriately poled halfwave rectifier. A current transformer 28 in series with the third phase conductor produces an alternating current signal which, after triode amplification, is applied to a rectifier circuit 34 (Fig. 2, not shown) eliminating the positive half-waves, while the negative half-waves 44 (Fig. 3). are triode amplified, limited, and phase reversed at 36, and added in combining circuit 26 to the positive-going voltage pulse 48 at the input of a protective control circuit 38, comprising a gas discharge tube and anode relay (Fig. 2, not shown) operative to energize known circuitbreaker 16 to open the contacts 12 when the combined peak voltage (which is shown to be dependent approximately on the true instantaneous power EI cos #, where # is the phase angle between load voltage and current) exceeds an adjustable critical value 50 (Fig. 3). A phase shift of 90 degrees may be inserted in the voltage signal circuit when the apparatus is applied to a single-phase induction motor circuit wherein current lags voltage. Potentiometers (Fig. 2, not shown) enable the amplitudes of the voltage and current signals to be regulated as required. The combined output voltage may operate a power indicator, a clutch for disconnecting the motor load, auxiliary supervisory signals, or other corrective action. Both the positive and negative excursions of the voltage and current signals may be combined in appropriate polarity for indication or control in response to the instantaneous power on successive line half-cycles.
Patent GB-1393794-A (GB)
Title: Allumination systems
IPC: F21S10/00
Filed: 1972-05-19
Abstract: 1393794 Optical direction finders SIEMENS AG 19 May 1972 [30 June 1971] 23655/72 Heading H4D An illumination system in which a spotlight directs a beam on to a moving object which carries a marker reflecting energy of a different wavelength to the beam, to a detector whose output causes a control device to track the object with said beam. In a theatre, a spotlight tracks an actor who carries a retroreflector. A beam of laser light outside the visible spectrum is situated in the centre of the spot beam and is reflected to a divided detector 12 which produces direction control signals for the spotlight. Several actors may be tracked with separate spots by using differently modulated laser beams and selective filters at the detector. The detectors may utilize rotating graticules for direction finding and sound or microwave energy may be used.
Patent GB-714601-A (GB)
Title: Reinforcing material, more particularly for floors
IPC: E04C5/16
Filed: 1951-10-11
Abstract: 714,601. Reinforcements for flooring and like wearing-surfaces. HODGSON, E. S., and LEA, H. D. Nov. 6, 1952 [Oct. 11, 1951], No. 23696/51. Class 20 (4) Reinforcing material, particularly for floors, comprises a plurality of metal strips bent backwards and forwards and interleaved with one another, the strips being rigidly joined together in spaced relationship by rods 16 which lie at right angles to the length of the strips and pass through holes therein, one or more distance pieces 17 being provided on the rods 16 to maintain the spacing of the strips. As shown each strip A is placed on edge and is formed with an ear 10, and beyond the ear is bent firstly at 45 degrees, as at 11, secondly parallel with the ear as at 12, thirdly at right angles as at 13, fourthly back at right angles as at 14, then at an angle of 45 degrees as at 15 and again bent with the second, third and fourth bends, 12, 13, 14, so as to provide oppositely facing portions C. D of broad U-form through apertures in the bases of which, the rods 16 pass. The rods may be curved or bent so that the material may be used in the lining of buildings.
Patent GB-994517-A (GB)
Title: Process for resolving racemic glutamic acid
Filed: 1962-06-20
Abstract: Optically active zinc glutamate is obtained from a supersaturated solution of zinc glutamate of pH 7 to 10.5 containing alkali metal ammonium glutamate by seeding with seed crystals of one of the enantiomorphs, and separating the crystals obtained.  A preferred method of carrying out the resolution is by circulating the above solution to be resolved through an apparatus comprising (1) a resolving vessel containing zinc L-glutamate seed crystals and zinc D-glutamate seed crystals with a screening net between, through which only liquid passes freely and (2) a combination of L-resolving vessels and D-resolving vessels connected by conduits, these vessels being D- and L-resolving vessels connected alternately in series and/or being a series of pairs of one D-and one L-resolving vessel connected in parallel, to crystallize out optically active zinc glutamate. After seeding it is preferred to stir the solution, replenish the zinc and glutamic acid sources, concentrate the solution and cool it. The pH is preferably adjusted during the crystallization.  Free glutamic acid may be obtained from the resolved zinc salt by treatment with acid or ion exchange resins. The examples describe both the batchwise and continuous resolutions and name the starting material for the resolution as resulting from acrylonitrile by the oxo- and Strecker reactions.
Patent GB-1254807-A (GB)
Title: Improvements in or relating to interrogation-reply systems
IPC: G01S13/78
Filed: 1970-05-18
Abstract: 1,254,807. Transponder apparatus. SIEMENS A.G. 18 May, 1970 [12 Sept., 1969], No. 23805/70. Heading H4L. In,an interrogation-reply system, interference with the interrogation signals is prevented by coding. The codes may be stored in the form of printed circuits which are selected for transmission arbitrarily. At the responder, a decoder checks for coincidence between an incoming code and a corresponding code stored in the responder, which causes the required information to be inserted in the reply signal. The reply is analysed at the interrogation unit, in a decoder, on the basis of the stored, previously transmitted, codes. Complete identity of the transmitted codes is not required and the reply is accepted when small timing displacements occur.
Patent GB-827335-A (GB)
Title: Improvements in magnetic recording and reproducing heads
Inventor: FROST WILLIAM THOMAS
IPC: G11B5/187
Filed: 1957-07-26
Abstract: 827,335. Magnetic recording and reproducing heads. BRITISH BROADCASTING CORPORATION. July 23, 1958 [July 26, 1957], No. 23825/57. Drawings to Specification. Class 40 (2). A method of making a magnetic recording or reproducing head comprises assembling two core portions together in such a manner that the opposing faces designed to form the transducing gap are in contact only near the front face and flaring away in a direction away from the front, filling the flared space with a non- magnetic material such as an epoxy resin cement, and removing material from the face to provide a gap of the desired dimension.
Patent GB-1457466-A (GB)
Title: Wheel alignement measuring device
IPC: G01B5/255
Filed: 1974-05-30
Abstract: 1457466 Testing wheel alignment: power and brake testing BANZAI JIDOSHA KK 30 May 1974 [24 July 1973] 23919/74 Headings G1W and G1X The toe in and camber angles of a pair of vehicle wheels may be measured by a device comprising two units, each unit including a pair of coaxially aligned rollers 20, 21 rotatably mounted on a support arm 22 for engaging diametrically opposed points of the outer face of one of the pair of wheels, the arm 22 being pivotally mounted on a table 35 which is pivotally mounted on a frame 33 movable toward the other unit, i.e. in direction C. The pivotal axes are orthogonal, there being provided indication means for indicating pivotal deflection of the table 35 about its pivot and further indicator means for indicating pivotal deflection of the arm 22 about its pivot. As described, the camber angle and toe in may be measured simultaneously by providing each unit with crossed support arms each arm having a pair of rollers, one pair 18, 19 being pivotally connected to its respective arm and spring-biased towards the other unit so as to allow the rollers 18, 19 to rotate in contact with the wheel. Alternatively, the toe in and camber angles are measured sequentially, the rollers 19, 20 first detecting the camber angle and then rotated through 90 degrees to detect toe in. The vehicle wheels are driven by pairs of rollers 1, 2, 1', 2' which are rotated by a motor 8. The rollers 18, 19, 20, 21, of each unit engage their respective wheel by means of hydraulic pressure cylinders 39. The indicator means may each comprise an arm 40, 46 which has a rack portion 41, 47 engaging a pinion gear 42, 48 of an angle detector 43, 49 to give an electric output signal. One end of the shaft of roller 1 is connected to an electric dynamometer 4, a torque detector 5 being connected thereto through a torque arm 6. Roller drive motor 8 is connected to a second torque detector 12 through arm 11. The shafts of rollers 1, 1' are connected by a clutch 13 which may be disengaged when conducting a brake test. Shafts for rollers 2, 2' are driven by separate motors 15 and a torque arm 16 and detector 17 detect breaking torque when rollers 2, 2' are braked by vehicle wheels resting thereon.
Patent GB-600681-A (GB)
Title: Improvements in or relating to the manufacture of cinematograph films
IPC: G03C7/22
Filed: 1945-09-18
Abstract: <PICT:0600681/IV(a)/1> A kinematograph film comprises a dye absorptive transparent ribbon of plastic material adapted to have images printed thereon with integral register teeth of the same material along one or both its margins to hold it in register with a film having sprocket holes fitting over the teeth.  Such a film may be printed by imbibition and the register teeth subsequently removed to leave sprocket holes (see Group XX).  In the manufacture thereof plastic material is fed through a hopper 6 on to an endless belt trained around continuously rotating drums to be moulded into a film 9 having register teeth 16 by a roller 8 which has peripheral apertures 14.  Specification 565,836, [Group XX], is referred to.
Patent GB-474936-A (GB)
Title: Improvements relating to capstan or turret lathes
IPC: B23B29/30
Filed: 1936-09-03
Abstract: 474,936. Lathes. WARD & CO., Ltd., H. W., and WILLIAMS, W. T. Sept. 3, 1936, No. 24113. [Class 83 (iii)] In a capstan or turret lathe or lathe attachment the stop d which determines the feed of the work bar f through the chuck i is carried on a movable arm c operated by the movement of the lever h or other mechanism controlling the chuck. The arm c has a boss k loosely mounted on a fixed shaft b and is connected by dog clutch teeth to an interchangeable distance sleeve and a hub l which is connected through a lost motion slot p, Fig. 2, and a link g to the lever h. The stop d is adjustable by a screw e and the sleeve may be changed to provide different ranges of adjustment. When the lever h is moved clockwise the lost motion is first taken up and the chuck closed after which further movement shifts the arm c and the stop to inoperative position. Return movement of the lever first positions the stop and then opens the chuck. The lever h may operate either mechanical or fluid-pressure chuck control.
Patent GB-659970-A (GB)
Title: Improvements in fasteners for garments or the like
IPC: A44B19/16
Filed: 1949-09-20
Abstract: 659,970. Sliding-clasp fasteners. MADSEN, B. Sept. 20, 1949, Nos. 24197 and 24198. Convention dates, Dec. 23, 1948 and May 18, 1949. [Class 44] A sliding clasp type fastener comprises two strip components of resilient material, each having a ridge and a groove adapted to be brought into interlocking engagement with the groove and ridge of the other. In the form of Fig. 1, the strips are adapted to be sewn to the garment to be fastened through parts 1 and 2, reinforced at 9 and 10 along their edges. One of the thickened inner parts 7 is formed with a round groove 3 and a trapezoidal ridge 4 and the other part 8 with a ridge and groove to fit. The components are fastened by means of a sliding clasp or by finger pressure. In the form of Fig. 2 both the ridges and grooves are rounded so that the strips are identical and have mating surfaces of " S " form. In a similar form, Fig. 3, the ridges are a looser fit in the grooves but are each provided with an oblique ribbed surface 13, preventing disengagement and allowing a slight longitudinal relative movement between the strips. In the form of Fig. 4, each component carries at least two ridges and two grooves closely interfitting when engaged together. The combined section of the interlocking parts 7 and 8 is of elliptical section and is connected to the attachment parts 1 and 2 through thinned parts 14, 15. The parts 1 and 2 are off-set from the centre and under tension the united parts 7, 8 turn about the attachment parts (as allowed by the thinned parts 14, 15) to drive the interfitting ridges and grooves more closely into engagement.