baber/WOPTO huggingface dataset:
Patent GB-1480959-A (GB)
Title: Blasting apparatus
IPC: B24C9/00
Filed: 1975-11-10
Abstract: 1480959 Blasting IAN HEATH Ltd 10 Nov 1975 [24 Aug 1974] 37371/74 Heading 3BD Apparatus for subjecting a workpiece to a blast of fluid comprises a chamber 10, a nozzle 11 in the chamber and means for feeding fluid to the nozzle, the chamber having an opening 13 and a structure 14 which is adapted to close the opening and support a workpiece. The structure is movable relative to the chamber between a loading position, in which the workpiece supporting means is accessible from outside the chamber for loading a workpiece on the supporting means, and an operative position, in which the opening is closed by the structure and a workpiece is positioned to receive the blast from the nozzle. The chamber 10 is cuboid in shape and a door 12 is formed with the opening 13 which is circular and has an annular seal of rubber. The nozzle 11 is directed towards the opening and is fed with a stream of water containing particles and a stream of air under pressure. The structure 14 is mounted on a framework 15 movable about a vertical pivot 16 on bars 16 when a strut 19 between the framework and chamber 10 is released from the chamber to provide access to the door. A motor 20 on the framework is connected by a chain drive 22 to a gear 21 freely rotatable on a shaft 25 but prevented from axial movement relative to the framework. The shaft 25 is hollow and at one end carries a head 26 formed with a socket 27 for receiving a cup-shaped workpiece. The shaft is axially slidable in bearings in the framework by means of a toggle mechanism 30, 31 having a handle 32 from the position shown in Fig. 1, in which the head 26 is spaced from the chamber 10 to permit loading of the workpiece into the socket 27, to the position shown in Fig. 2 in which the head engages the annular seal and a clutch member 29 fixed to the shaft engages a clutch member on the gear 21 whereby the shaft and head are rotated. When the head is moved to the operative position, a control actuates the feed of water and solid particles to the nozzle and the air supply is controlled by timing device so that the workpiece is blasted during one rotation thereof. On return of the head to the loading position, an ejector rod 33 partly ejects the workpiece from the head so that it can be removed by hand. The supporting means may grip the workpiece internally to leave the external surface exposed for blasting, the workpiece passing completely through the opening into the chamber.
Patent GB-803198-A (GB)
Title: Process and catalyst for polymerisation of polymerizable hydrocarbons
IPC: C08F36/04
Filed: 1956-12-07
Abstract: A catalyst for polymerizing olefines consists of a mixture containing three components: (1) a halide of Ti, Zr, Hf, Ge; (2) an organic phosphine R3P,; and (3) one or more of (a) an organo-metallic halide RMX, in which X=halogen, and M=Al, Ga, In, Tl, Be, e.g. alkyl aluminium chloride, or (b) an organic halide and a metal, e.g. alkali metal, Be, Mg, Zn, Al, Cd, Hg, Ga, Tl, In, or (c) a complex hydride containing an alkali metal, e.g. LiAlH4, NaGaH4.  Examples of (1) are tri-halides or tetra-halides of titanium and zirconium, of (2) tri-butyl, tri-phenyl, tri-tertiary-dodecyl and tri-cyclohexyl phosphine, of (3) (a) ethyl aluminium dichloride, diethyl aluminium chloride, p-tolyl beryllium iodide, and of (b) dibromopropane, di-fluoroethane, benzyl chloride, cyclopentyl chloride; numerous examples are given.  Olefines polymerized may be 1-olefines up to 8 C atoms, branched chain, cyclic, and aryl olefines, conjugated di-enes, alone or in admixture with co-polymerizable substances, e.g. acrylonitrile, vinyl chloride or 2-vinyl-pyridine.  The starting material should be freed from oxygen, carbon dioxide and water.  The polymerization may be effected in the presence of inert diluents, e.g. paraffins, aromatic or cyclo-aromatic hydrocarbons or halogenated derivatives thereof.  The polymer is finally washed with alcohol and dried.ALSO:Olefines are polymerized with a catalyst containing 3 components, (1) a halide of Ti, Zr, Hf, Ge, (2) an organic phosphine R3P, and (3) one or more of (a) an organo-metallic halide RMX in which X=halogen, and M=Al, Ga, In, Te, Be, e.g. alkyl aluminium chloride, or (b) an organic halide and a metal, e.g. alkali metal, Be, Mg, Zn, Al, Cd, Hg, Ga, Tl, In, or (c) a complex hydride containing an alkali metal, e.g. LiAlH4, NaGaH4.  Examples of (1) are the tri- or tetra-chlorides of Ti or Zr, of (2) tri-butyl-, tri-phenyl-, tri-tertiary-dodecyl- and tri-cyclo hexyl phosphine, of (3) (a) ethyl aluminium dichloride, diethyl aluminium chloride, p-tolyl beryllium iodide, and of (b) dibromopropane, di-fluoroethane, benzyl chloride, cyclopentyl chloride.  Numerous examples given. Olefines polymerized may be 1-olefines up to 8 C atoms, branched chain, cyclic, and aryl olefines, conjugated di-enes alone or in the case of conjugated dienes in admixture with co-polymerizable substances, e.g. acrylonitrile, vinyl chloride or 2-vinyl pyridine. The starting material should be freed from oxygen, carbon dioxide and water.  Polymerization may be effected in the presence of inert diluents, e.g. paraffins, aromatic or cyclo-aromatic hydrocarbons or halogenated derivatives thereof. The polymer is finally washed with alcohol and dried.
Patent GB-944316-A (GB)
Title: Improved electric cables
Inventor: CUTLER ALBERT ERNEST
IPC: H01B11/00
Filed: 1961-10-19
Abstract: 944,316. Electric cables. COMMUNICATIONS PATENTS Ltd. Oct. 17, 1962 [Oct. 19, 1961], No. 37478/61. Heading H1A. An electric cable consists of at least two pairs of mutually insulated parallel conductors 1, 2 and 3, 4, about which is a dielectric 11 which is poor relative to the conductor coatings 5-8. The pairs are wound on an insulating core 9 and taped together with strips 10 of polyethylene, their coatings have a power factor for which tan 8 is less than 0.001. The poorer dielectric layer 11 is of polyvinyl chloride and outside this is a conductive screen 12 and a protective coating 13. The Specification explains that this cable reduces cross-coupling since the longitudinal currents propagated along the cable are attenuated more than the balanced signal currents. A further embodiment is described (Fig. 2, not shown) in which there are six twisted pairs of conductors, while a still further embodiment (Fig. 3, not shown) has the cylindrical core string replaced by a multi-channelled structure which isolates individual pairs of conductors.
Patent GB-1162404-A (GB)
Title: Improvements in or relating to Land Drainage Units
Inventor: HOARE JOHN KENNETH
IPC: E02B11/00
Filed: 1967-08-15
Abstract: 1,162,404. Pipe joints. J. K. HOARE. 14 Aug., 1968 [15 Aug., 1967], No. 37494/67. Heading F2G. A pipe junction for connecting land drainage pipes comprises a precast concrete channel unit 1 having U -shaped interconnected channels 3, 4a formed therein and a precast concrete cover 2 arranged to close the open tops of the channels. As shown, channel 3 is cut away at one end 7 to constitute a female end to receive a male pipe end and is extended at the other end 8, Fig. 5 (not shown), to constitute a male end. Channel 4a is similarly recessed to constitute a pipe-receiving female end. The cover is provided with locating lugs 10 and 11. In modifications, Figs. 1-3 (not shown), the channels are not recessed or extended and the cover is rebated and grooved at 5 and 6 respectively to locate the cover on the unit. The unit and cover may be reinforced with mild steel wire and whilst T-junctions are shown channel 4 may be arranged at other angles, e.g. at 45 degrees, to the channel 3. Alternatively the unit could be in form of a Y-junction or arranged to connect two or more branches.
Patent GB-847816-A (GB)
Title: Curable polyethylene compositions
IPC: C08K5/31
Filed: 1956-12-07
Abstract: A curable composition comprises (1) polyethylene, (2) silica, (3) from 0,01 to 5% by weight of the total composition of an organic or inorganic base, and (4) di-a -cumyl peroxides.  The preferred basic materials are guanidines, e.g. diphenyl or di-tolyl guanidines, but other organic and inorganic bases, e.g. basic lead carbonate, silicate and silicate-sulphate compound, lead, magnesium and zinc oxides, lead maleate, dibasic lead phosphate and phthalate and the lead salt of t.-amyl phenol are mentioned.  Fumed silica and high or low pressure polyethylene may be used and the composition is prepared by milling and is press-cured to give products with improved tensile strength and elongation and electrical properties which may be used for films, tapes, laminates or containers and for electrical applications. Specification 653,323 is referred to.
Patent GB-967508-A (GB)
Title: Improvements in and relating to magnetic core structures
Inventor: ROSE KENNETH
IPC: H01F17/04
Filed: 1961-10-19
Abstract: 967,508. Transformers and inductors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Oct. 19, 1962 [Oct. 19, 1961], No. 37559/61. Heading H1T. A magnetic core structure consists of a cylindrical part 1 which has an internal flange 2 and whose ends are closed by parts 3, 6, one of which (3) carries a central core member 4 extending in the assembled structure either to meet part 6 or to leave a small air gap. The cylindrical part 1 may have at least one longitudinal slot 10 for conductor egress, and axial holes 2a, 7 and 8 are provided in parts 2, 3, 4, 6 which align on assembly to carry a bolt for fixing the assembly together and to a base board. The coil may be wound on a former 9, or direct on to member 4, or on an insulating sleeve fitted on member 4. The structure may be of ferrite, and acts as electromagnetic screen as well as forming a magnetic circuit. The coil winding may be carried out on a part of the assembly secured in situ in an electrical apparatus as described in Specification 967,510.
Patent GB-523086-A (GB)
Title: Improvements in or relating to grinding machines
IPC: B24B17/02
Filed: 1938-12-24
Abstract: 523,086. Grinding profiled work-pieces. BENTLEY ENGINEERING CO., Ltd., and SPURLING, B. C. Dec. 24, 1938, No. 37569. [Class 60] A machine for grinding irregular profiles comprises a grinding-wheel 10 rotating in a plane at right angles to the plane of universal movement of the work carriage 13 which carries adjustable holders for a work-piece engageable with the grinding-wheel and a templet engageable with a fixed abutment. The carriage is mounted on ball bearings 14 for universal movement on the bed 12 and carries compound slides 20, 17 the upper member 17 to which the templet 16 is secured by a screw 18 being adjusted by a micrometer screw 21 and the compound assembly being adjusted axially of the grinding-wheel by screws 25 threaded into vertical portions 26 of the carriage. A worksupporting bar 27 of square section has cylindrical end portions running in tapered bearing- sleeves 28 in the parts 26. The bar 27 is formed with a' rear extension 129 provided with upstanding lugs 30, 44. The extension is also fitted with a semi-cylindrical cradle carrying the lower work-holding member 32 which is of complementary arcuate form and is angularly adjustable on the cradle and secured thereto by a screw 35. An upper member 33 is slidably adjustable on the member 32 to and from the grinding-wheel and is clamped by a screw. The front of the member 33 is cut away at 34 in conformity with the shape of the work-piece 38 which is secured by a screw 41 on a pivoted clamping-lever 39 actuated by a hand-operated toggle lever 42 pivoted in the lugs 44. The work-holder may be angularly adjusted in the cradle to provide any required relief to the edge of the work. The work-holder may also be adjusted about the axis of bar 27 being clamped after adjustment by a wheel 57. The carriage is moved by hand, or mechanically, to engage the templet with a stationary abutment rod 47 having the same curvature as the edge of the work. The grinding-wheel is trued by a diamond 51 mounted to swing about the axis of abutment 47. The diamond is set by placing the member 48 over a long spindle of the same size as the abutment 47 and adjusting the diamond by a screw 52 to contact this spindle When the trueing attachment is placed on the machine, Fig. 7, the wheel will thus be trued to a profile having the same curvature as the abutment 47.
Patent GB-1219514-A (GB)
Title: Improved wool scouring process
Inventor: COUCHE RAYMOND ARTHUR
IPC: D01C3/00
Filed: 1968-08-07
Abstract: 1,219,514. Scouring wool. R. A. COUCHE. 7 Aug., 1968 [18 Aug., 1967], No. 37576/68. Heading D1P. Wool is scoured by washing it with water and then passing it through a series of stages in which it is washed countercurrently with an organic solvent or mixture of organic solvents in which wool wax is soluble and which is miscible with water, the process being characterised in that the solvent passing from one stage to another countercurrent to the wool is not treated to remove the wool wax dissolved therein. The solvent/water ratio in the solvent stage into which the water wet wool passes may be controlled to ensure that substantially all the wool wax dissolved in the solvent remains in solution, e.g. a solvent/water ratio of more than 9:1 by volume. The solvent may have a boiling point or boiling range below the boiling point of water and may be acetone, isopropyl alcohol, a mixture of ethyl alcohol, ethyl acetate and isopropyl ether in the ratio of 4:2:1. A three stage water washing section and a four stage solvent washing section may be used. The water washing to remove suint may be carried out at or below ambient temperature and the solvent washing may be carried out at from 45‹C to the boiling point of the solvent, the last stage at which fresh solvent is introduced to the system and from which the wool leaves the system being carried out at or below ambient temperature. The washing with water may be effected by passing the wool through one or more cold water baths or by spraying it with water, cold water preferably passing from one bath to another countercurrent to the passage of the wool and the wool squeezed after each wash. Each solvent washing stage may comprise a vessel filled with solvent, means being provided to pass the wool through the solvent and to remove the excess solvent by squeezing before the wool is passed to the next bath, the excess solvent flowing back into the vessel from which the wool has been withdrawn. The wool at each stage may be in a free float condition and subjected to a raking action. Solvent from the first solvent stage may be passed through a clarifying centrifuge to remove suspended dirt and then to a distillation unit to recover the solvent.
Patent GB-1000571-A (GB)
Title: Method for making a flexible casting
Inventor: YATES JAMES LUCAS
IPC: B22C9/00
Filed: 1961-10-25
Abstract: 1,000,571. Valves. CRANE CO. Oct. 25, 1961, No. 38221/61. Heading F2V. [Also in Division B3] A method of producing a gate valve closure member or the like, e.g. of the type described in Specification 704,031 which is referred to, having integrally connected and oppositely disposed seating members 13, 14 comprises casting (see Division B3) so as to form a large central strut 15 and smaller surrounding struts 16 between the seating members, at least some of said smaller struts being cut to provide flexibility after treatment of the casting such as hard metal facing. The spaces 18 made in the ties 16 may be adjusted by shims.
Patent GB-987481-A (GB)
Title: Improvements in or relating to panoramic cameras
IPC: G03B37/02
Filed: 1962-10-09
Abstract: 987,481. Panoramic cameras. CINERAMA CAMERA CORPORATION. Oct. 9, 1962 [June 27, 1962], No. 38270/62. Heading G2A. A panoramic camera having drive means for rotating the camera has a disc mounted thereon which remains stationary in space as the camera rotates, and which can be set to determine the angle of rotation of the camera, means being attached to the disc for de-energizing the drive means when said angle has been reached. In the form shown, the camera is arranged to rotate about an axis 14 which passes through a principal point of the lens, so that the image at the focal plane remians stationary in space as the camera rotates. The film 30 winds from a supply spool 40, past a guide 32 having an exposure slot 34, on to a take-up spool 42. The film is advanced by a sprocket having teeth 48, driven by gearing 50 from a motor 52. The camera has a stationary base 76, on which is mounted a switch 80. A lower stationary gear 82 is fixed to base 76, and an upper stationary gear 84 is fixed to an axial shaft 86. The camera is rotated by the action of a gear 88 (driven from the motor), which rolls round the periphery of gear 84. At the same time, the gearing 50 turns the sprocket 48 to move the film in the opposite direction to the camera rotation, in such manner that it actually remains stationary in space. At the top of the camera is an angle indicator 15 comprising an upper disc 90 on a bearing 98, and fixed to a gear 94. Gear 94 engages with a pinion 106 at the end of a shaft 104, whose other end carries a pinion 108 meshing with the stationary gear 82. Thus as the camera housing rotates, pinion 108 rolls round gear 82, so that pinion 106 at the other end of shaft 104 turns gear 94, and thus disc 90. Disc 90 accordingly remains stationary in space as the camera rotates. Under disc 90 is another disc 92, which bears frictionally against disc 90, and therefore also remains stationary with it. However, the lower disc 92 can be angularly adjusted with respect to the upper disc 90 by hand, the angle between them being the angle through which the camera is to be rotated. Fitted into the rim of disc 92 is a plunger 114, which can be set so that when the camera completes the required angular sweep. The plunger actuates a switch to break the motor circuit. The plunger can also be locked into an inoperative position if required, so that the camera swing is not stopped automatically. Although the film is exposed through an aperture slot, and no shutter is necessary, a shutter is in fact provided so that exposures are not affected by the acceleration and deceleration of the camera at the beginning and end of its sweep. The shutter is housed in a portion 28 of the camera, and consists of a blade 162 pivotable at 164 to cover or uncover the lens opening 160. The shutter is normally held closed by a spring 168. It has an armature 172 lying between polepieces 178, and when these are energized the blade moves into the "shutter open" position of Fig. 9. The shutter is arranged to be energized in correlation with the sweep mechanism.
Patent GB-837653-A (GB)
Title: Improvements in or relating to party-line arrangements for automatic telephone switching systems
Inventor: BEASLEY HAROLD ARTHUR
IPC: H04Q3/00
Filed: 1957-12-13
Abstract: 837,653. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. Nov. 10, 1958 [Dec. 13, 1957], No. 38726/57. Class 40 (4). At party-line substations the dial and circuits are arranged so that the dialling of the preliminary digit 0 sends a number of impulses in code form, as indicated in Fig. 3, to identify the calling substation, such impulses being effective at the exchange to operate 2 out of 5 code relays. Substation, Figs. 1, 2.-The dial is provided with additional impulse springs CIMP which are normally held open by a masking cam 23 and are operated by a code cam 20 on the return of the finger plate when 0 is dialled, the masking cam being withdrawn in the extreme position of the finger plate and restored when it reaches normal. Just before this occurs, while the D.C. loop is closed, dial off-normal contacts DON open and allow the operation of relay ML which was hitherto short-circuited. This relay locks mechanically until the handset' is replaced, removes a short-circuit from the transmitter and connects in the digital impulse springs IMP in place of the code springs CIMP. On an incoming call the subscriber must actuate the switch KA to remove the short-circuit from the transmitter and establish a D.C. loop. The switch KA is restored when the handset is replaced. Exchange circuits, Figs. 4, 5.-As long as the party-line is idle dialling tone is applied from common lead 10 through line relay A and is heard by a calling subscriber. A D.C. loop is established when the dial is moved off-normal, and relays A, B respond. The code impulses received from the substation are repeated to the magnet of the line switch SH in series with CD, which pulls up at the first impulse. The switch SH thus steps to position 7, and at each long " make " in the code CD falls back to operate one of the code relays MA ... MD. Finally, in position 7 relay CC pulls up provided two and only two code relays are operated. If CC fails to operate at this stage, NU tone is applied to the party line from lead 11. If CC operates correctly, the switch SH self-steps to position 13, whereupon, after CD falls back, MS energizes and starts the hunting operation under the control of test relay HS. The latter relay pulls up when an idle outlet is reached, followed by switching relay HA and relay HB which connects up the appropriate meter as determined by MA . . . MD. The subscriber receives a second dial tone from the next selector and the call is set up in the usual manner and is metered upon reply. The switch SH steps to the next home position 1 or 13 upon release. On a call incoming to the party-line, the proper subscriber may be called by code ringing or harmonic ringing on either leg applied from the final selector.
Patent GB-1273429-A (GB)
Title: Improvements in or relating to measuring instruments
Inventor: PAYNE ROY DAVID
IPC: G06F7/62
Filed: 1969-08-01
Abstract: 1,273,429. Measuring mark/space ratio. STANDARD TELEPHONES & CABLES Ltd. 29 July, 1970 [1 Aug., 1969], No. 38734/69. Heading G4H. The mark space ratio of a square wave signal IN (Fig. 1) is measured by accumulating high frequency pulses in one sense in a reversible counter 3 during the mark portion of the waveform and in the other sense during the space portion of the wave form, the final count representing the mark space ratio and controlling an indicator 12. As described the input signal IN is fed to a bi-stable 1 to give two outputs STOP and COUNT (Fig. 2, not shown) and an inverter 2 so that four consecutive time intervals COUNT IN, COUNT IN, STOP IN, STOP IN are defined. During the first two intervals the counter is incremented and decremented respectively via a gate 5 by pulses from generator 4. During the third interval a staticizer 9 is pulsed to read out the coded count to display 12 and during the fourth interval the counter is reset.
Patent GB-1521964-A (GB)
Title: Ion-sensitive electrodes
IPC: G01N27/333
Filed: 1974-09-04
Abstract: 1521964 Ion selective electrode NATIONAL RESEARCH DEVELOPMENT CORP 1 Sept 1975 [4 Sept 1974] 38748/74 Heading G1N An ion selective electrode comprises a first member 10 of a material containing the cation to be measured, a second member 11, contacting the first member and comprising an electrically conductive material which contains the cation to be measured and which allows interactions requiring the supply of electrons with the cation to take place internally or at the first and second member interface, means 13, 15 for electrically contacting the second material and means 17 allowing the first member but not the second member to contact the electrolyte. The second member preferably comprises a non- stoichiometric material and may be a mercury amalgam or a tungsten bronze, many examples being given. The first member may comprise a beta alumina, many examples being given. The cation may be a cation of Na, K, Li, Rb, Co, T1, Ag, Cu, NO, Ga, Cs, NH4 or In.
Patent GB-1322778-A (GB)
Title: Photoelectrophoretic image transfer process
IPC: G03G15/16
Filed: 1970-08-12
Abstract: 1322778 Photo-electrophoretic imaging XEROX CORP 12 Aug 1970 [19 Aug 1969] 38773/70 Heading G2H A photo-electrophoretic image formed on an injecting electrode 30 is transferred photoelectrophoretically (as shown, using a light source 52) or by adhesive pick-off to a web 53 comprising a transfer release layer and is then transferred to a final recipient member (not shown) by heat, pressure or solvent. The image may be mono or polychromatic. The latter may be formed in a single or a plurality of stages.