baber/WOPTO huggingface dataset:
Patent GB-1318266-A (GB)
Title: Removal of endless belt from a supporting surface
IPC: B29D30/08
Filed: 1970-09-03
Abstract: 1318266 Pneumatic tyres DEERING MILLIKEN RESEARCH CORP 3 Sept 1970 [4 Sept 1969] 42316/70 Heading B7C [Also in Division F2] A drum 12 includes a plurality of adjacent bands 22 resting on a sleeve 26 and forming a support surface at the periphery of the drum, each band being wrapped at one end around a pulley 28 or 28<SP>1</SP> and secured to a clamp 32 on a band anchor ring 31, the other end being fixed to a respective cable 34 which extends around a pulley 27 mounted on the sleeve 26 to a clamp extension (33). The ring 31 is connected to a thrust ring 23 mounted on a rod 13 extending through the hollow shaft (14) of the drum to a pneumatic cylinder (15). In operation.-A coated cord (19) is fed on to the rotating drum to form a belt, and when the belt is completed the drum is stopped and the rod 13 is drawn into the cylinder (15) causing the thrust ring 23 to move towards the hub flange 24 of the drum so that each band 22 moves around its respective pulley 28 or 28<SP>1</SP> in a hair pin turn and so advance the belt axially off the drum.
Patent GB-1075305-A (GB)
Title: Liquid aluminium chloride catalyst
IPC: B01J27/125
Filed: 1964-12-29
Abstract: Olefines are polymerized in the presence of a liquid catalyst comprising aluminium halide and an aliphatic ester containing 4 or more carbon atoms per mol such that the ratio AlX3/ester > 1/1. Specified olefines are ethylene, butene-1, isobutene, hexene, octene-2, 2-ethylhexene-1, decene-2, decene-1, undecene-1, dodecene-1, hexadecene-1, octadecene-1, octadecene-9, eicosene, tricosene-1, tetracosene-1 and triacontene-1.ALSO:A polymerisation catalyst comprises a normally liquid aliphatic ester of a fatty acid containing a total of at least 4C per ester molecule having dissolved therein more than 1 mole of aluminium halide per mole of ester. AlCl3, AlBr3, AlI3 and AlF3 are all specified, the first mentioned being preferred.  Specified esters are ethyl acetate, ethyl propionate, ethyl palmitate, butyl oleate, and methyl caprylate.
Patent GB-1061518-A (GB)
Title: Improvements in or relating to the manufacture of clay and like pipes
IPC: F26B21/00
Filed: 1965-12-11
Abstract: 1,061,518. Endless conveyers. HEPWORTH IRON CO. Ltd. Dec. 11, 1965, No. 52710/65. Heading B8A. [Also in Division F4] A roller conveyer for drying pipes 8 comprises pairs of rollers 7 between and on which the pipes are horizontally and rotatably carried through a drying kiln (not shown). The rollers are rotatably supported at each end by rotatable bearing shafts 6 mounted on the chain links 5B of each of a pair of endless chains 1 supported by wheels 3 on guide rails 2 at either side of the kiln. The rollers are rotated continuously by pinions 9 on the shafts 6 and racks 10 along the guide rails 2. The inside plates 11 of each link carries a vertical bracket 12 carrying a spindle 13 which mounts a freely rotatable sleeve 14 with radiating arms 15 carrying a flat ring 16 of a radial dimension corresponding to end face 17 of the pipe to prevent both sideways movement and sliding contact therebetween. In a modification, the spindle 13 and sleeve 14 are replaced by spaced rollers 20, Fig. 3 (not shown) mounted on a vertical spindle 19 which replaces the bracket 12.
Patent GB-1214193-A (GB)
Title: A method and device for detecting variations
Inventor: BORSCH ROLF
IPC: G01N3/56
Filed: 1968-11-08
Abstract: 1,214,193. Measuring displacement electrically. SAAB AB. Nov. 8, 1968 [Nov. 8, 1967], No.52962/68. Heading G1N. A reciprocating member 4 Fig. 1a is attached to the core 3 of a differential transformer 1 and the output signal from the two opposed secondary windings is fed to a circuit Fig. 2 wherein the displacement corresponding to the bottom dead centre of the member 4 is sensed. As shown the transformer is positioned so that this occurs when the core 3 is inside the second winding S2. The signal V s2  from winding S2 is fed to a first flipflop device 8 which gives an output when V s2  is negative, indicating that the core 3 is inside the transformer 1 and, not right outside it: the signal V s1  + V s2  from the two windings S1, S2 is fed to a second flip-flop device 7 which gives an output when its input is negative, indicating that the core 3 has passed the centre point. When both devices 7, 8 are emitting outputs an AND gate 9 activates an amplifier 10 to close switch 11 and the V s1  + V s2  signal is fed to a meter 13 reading its maximum value indicative of the bottom dead centre position of the member 4. Deviations in this position may be taken as a measure of the wear in the associated moving-members. A series of reciprocating members may be monitored in this way, and an alarm energized when the wear exceeds a predetermined value. The transformer 1 may alternatively be positioned so that the reversing position of the member 4 occurs when the core 3 is located inside the first winding 51. The elements 7, 8, 9 are then replaced by a switching arrangement sensitive to the maximum value of V s1  + V s2 . Corresponding to the core 3 just entering the transformer, and the meter 13 senses its minimum value. In one embodiment Fig. 3 (not shown) a number of reciprocating members 4 are simultaneously monitored, the bottom dead centre positions giving voltage signal pulses which are integrated to bias the flip-flops 8 so that only the end of travel point of the reciprocating member with the maximum displacement is measured.
Patent GB-1234751-A (GB)
Title: Improvements in or relating to aerials
IPC: H01Q9/27
Filed: 1966-11-30
Abstract: 1,234,751. Aerials. GENERAL ELECTRIC CO. Ltd., S. CORNBLEET, and J. BROWN. 22 Jan., 1968 [30 Nov., 1966], No. 53733/66. Heading H4A. A radar aerial array utilizing the static-split principle comprises a shallow cup-shaped metal member 2 having its open end closed by a metal plate 3. The interior of the member 2 is divided by four partitions 4 into quadrants, each quadrant being divided by two arcuate partitions 6 to form a rectangular cross-section waveguide in the configuration of a serpentine channel 7 having three limbs. The outer end of each waveguide 7 is coupled to a respective rectangular cross-section feed waveguide 9, the inner end adjacent the centre boss 5 being short-circuited. The outer surface of plate 3 carries four groups of eight linearly polarized radiators 10, each group being associated with a respective quadrant. The radiators 10 are spaced apart along a waveguide channel 7 a distance equal to ¢#, their positions being denoted by crosses 11. Each radiator 10, Fig. 3, incorporates a dipole radiating element 12 formed by photo-etching a copper layer on the face of a dielectric disc 13. The disc 13 fits in a recess 14 in a copper tube 15, the other end of the tube being flush with the surface of the plate 3 to form a resonant cavity. Each element 12 is coupled to its waveguide 7 by an air-filled coaxial line 16 incorporating a slot excited balun. The outer conductor 17 of the line 16 is bifurcated by slots 18, the ends of the bifurcations having lugs 19 fitting into slots 22 in the disc 13. The other end of the conductor 17 fits in an aperture (not shown) in the plate 3. The inner conductor 21 is connected at one end to the conductor 17 in the slotted region to generate the H 11  coaxial mode, this mode in combination with the existing T.E.M. mode exciting the bifurcations to form a balanced transmission line. The other end of the conductor 21 has a probe 22 extending into the waveguide 7. Inductive irises 23 match out admittances presented by the probes 22. The linearly polarized array may be converted to circular polarization by a polarizing grating placed in front of the array. In an alternative arrangement for obtaining circular polarization, the radiator 24 of Fig. 4 may be used, this radiator comprising two interleaved copper spirals 25 photo-etched on a PTFE disc 26. In a modified construction (Figs. 5, 6, not shown), each quadrant is divided into three separate arcuate waveguides by three concentric circular partitions extending through 360 degrees.
Patent GB-1387356-A (GB)
Title: Article of furniture for supporting a person
IPC: A61G15/02
Filed: 1972-11-23
Abstract: 1387356 Adjustable dental chairs SIEMENS AG 23 Nov 1972 [2 Dec 1971] 54264/72 Heading A4J [Also in Divisions E2 and F1] A fluid operated actuator Fig. 2, for tilting the seat or back of a dental chair, comprises a piston 13 sliding within a cylinder 10, 11, 12 and a piston rod 26 with ball joints 14, 27. The piston is of substantially the same length as the cylinder and tapers conically internally. Abutments 19, 20 limit movement of the piston.
Patent GB-1337206-A (GB)
Title: Silicon target for image pickup tube
IPC: H01L21/00
Filed: 1971-11-23
Abstract: 1337206 Image pick-up tubes; semiconductor devices MATSUSHITA ELECTRONICS CORP 23 Nov1971 [25 Nov 1970] 54284/71 Headings H1D and H1K A target for an image pick-up tube comprising an N-type silicon substrate 1, Fig. 2, with P-type regions 2 on one surface, is provided on the opposite surface with deep level regions 6 which reduce lateral diffusion and thereby improve the resolution, possibly by 12%. The regions 6 may be of Au, Cu, Fe, Ni, Co, or Mn which may be diffused or injected by ion bombardment; they are preferably arranged at the same pitch as the regions 2 and may overlap them in plan view or may be arranged in interstitial areas, and they may be of round, square, or cross shape. An N + layer 3 may be provided on the light-receiving surface. The P-type regions are preferably formed in apertures in a silicon dioxide film 4, and a semi-insulating film 5 having a specific resistance of 3 Î 10<SP>8</SP> to 3 Î 10<SP>10</SP> ohm. cm. may cover areas 2 and 4; suitable materials are CdS, ZnS, As 2 S 3 , Sb 2 Se 3 , NiO and TaO. Manufacture.-In one example a slab 150 microns thick of silicon of 10 ohm. cm. specific resistance is oxidized on one surface and apertures 11 microns diameter at a pitch of 20 microns are formed in the oxide, boron being diffused through these apertures to form the P-type regions 2 having a depth of 2 microns and a diameter of 14 microns. The opposite face of the silicon is etched to reduce the thickness at least of the target area to 11 microns and gold is diffused or injected to form regions 6 which may be 5 microns in diameter and 1À5 microns deep. The N+ layer 3 is formed by diffusing phosphorus.
Patent GB-1206630-A (GB)
Title: Cover hold-down clamp for screening mahines
IPC: B07B1/48
Filed: 1967-11-29
Abstract: 1,206,630. Screening machine. ORVILLE SIMPSON CO. 29 Nov., 1967 [3 Jan., 1967], No. 54335/67. Heading B2H. [Also in Division E2] In a screening machine comprising a screen box 12 in which one or more screens 34 are mounted, a cover 17 is secured to the box by means of hold-down clamps 21 each of which comprises a handle 43 pivotably connected at or near its end to one end of a toggle 41 which is pivotably connected at its other end to the box 12, one or more projecting pins 70, 71 being provided on the handle off-set from its pivotal axis 68 so that as the handle is swung downwardly, the pin (or pins) engages (or engage) in a recess (or recesses) formed in a latch 73 welded to the cover 17 whereby the latter is clamped on to the box 12. The toggle 41 is connected to the box 12 by means of a bolt 42 which passes through a pin 54 pivotable in a bracket 56 on the box 12 and which is adjustably screwed in the toggle. Pins 80, 81 on the toggle limit the downward movement of the handle 43. The cover 17 is formed with side branches 27, 28, the branch 27 providing a dust guard and the branch 28 deceiving a rubber seal strip 29 which is compressed on to the screen periphery when the cover is clamped down. The screen 34 is tensioned by springs 36 across a screen frame 33 provided with a rubber seal or compression seal 37 which bears upon the box 12 or, in the case of a number of parallel screens, upon the next lower screen. The box is inclined to the horizontal being supported on slide pads at its lower end. An oscillatory, gyratory or rotary motion is imparted to the upper end of the box by means of an eccentric or other means driven by an electric motor. In modifications, the cover 17 may be clamped to the screen frame or to the box rather than on to the screen as shown.
Patent GB-1486188-A (GB)
Title: Tracking and/or guidance systems
IPC: G01S3/783
Filed: 1973-11-23
Abstract: 1486188 Optical missile tracking EMI Ltd 7 Nov 1974 [23 Nov 1973] 54509/73 Heading H4D In an optical direction finder, of the kind using a quadrant static split detector 3 on which the image of the vehicle to be tracked, e.g. a remote guided anti-tank missile, is projected by a lens system 1, 2, the lens system is initially arranged during an aquisition mode so that field lens 2 is in the focal plane of objective lens 1 and the lens 2 projects an image of the objective lens 1 on to the detector 3, any radiation falling on the objective lens 1, from within a very large angle, appearing from the field lens to fill the entire aperture of the objective lens and correspondingly cover the entire image on the detector. In a practical version, Figs. 2, 3, an inclined concave mirror 4 is at the focal plane of lens 1 and has a radius of curvature of <SP>2</SP>/ 3 f (f= focal length of lens 1). The image of lens i, or of a stop 7, is projected a distance f/2 on to the plane of a collimating lens 5. The collimated rays are reflected back through lens 5 by a mirror 6 moved so as to automatically counteract any vibration of the direction finder. The rays then reach field lens 2 at a position equivalent to that of mirror 4 and thence to the detector 3. As the missile nears the target a narrower field-of view is required and this is automatically produced by means 8 moving the detector 3 nearer lens 2.
Patent GB-1179259-A (GB)
Title: A Slip-Preventing Device to be Applied to the Wheel of a Motor Vehicle.
Inventor: PAGANELLI CLAUDIO
IPC: B60C27/20
Filed: 1967-12-04
Abstract: 1,179,259. Anti-slip attachments for vehicle wheels. C. PAGANELLI. 4 Dec., 1967 [10 Dec., 1966], No. 55151/67. Heading B7C. An anti-slip attachment for a wheel comprises discs 1, 3 defining a circumferentiallyextending groove therebetween, disc 1 being fixed to the wheel and disc 3 being prevented from rotation by arm 7, and a phirality of plates 5 each carried at one end of an arm 4 the other end of which is slidable in the groove. The arms follow rotation of the wheel so that the plates, which are wider than the wheel, fall successively in front of the wheel. The attachment may be put out of use by moving stops connected to a fluid-actuated jack 6, the stops holding all the arms in the raised position. In a twin-wheel arrangement, the discs are positioned between the wheels and each arm carries a plate spanning the two wheels.
Patent GB-1471550-A (GB)
Title: Disc-shaped semiconductor component
IPC: H01L23/04
Filed: 1974-12-23
Abstract: 1471550 Semi-conductor device casing LICENTIA PATENT VERWALTUNGS GmbH 23 Dec 1974 [27 Dec 1973] 55462/74 Heading H1K In a casing for a disc shaped semi-conductor device 1, e.g. a thyristor, electrodes 13, 14 are contacted by cylindrical metal heat sinks 2, 3 which are encircled by an insulating ring 4 of plastics non-adherent to the heat sinks, and two flexible annular metal strips 21, 31 define air gaps Sp and are connected to the heat sinks 2, 3 at their inner circumference and are embedded at their outer circumference in an outer plastics ring 5. The metal strips 21, 31, which together with the heat sinks 2, 3 may be of copper, allow for alternating load stresses and seal the casing against plastics material during moulding of the outer ring 5. A tube 6 allows connection of a lead to a further electrode on the device 1.
Patent GB-1376260-A (GB)
Title: Magnetic memory unit
IPC: G11B5/74
Filed: 1972-12-04
Abstract: 1376260 Magnetic record carriers OMRON. TATEISHI ELECTRONICS CO 4 Dec 1972 [8 Sept 1972] 55872/72 Heading G5R A record carrier comprises a substrate 1 of crystallized glass and a magnetic ferrite film 3 thereon of thickness 1 to 5 microns, and is mounted on a rotatable shaft 2 and spaced from a head 4. A disc-form carrier is made by polishing the disc substrate; repeatedly coating it with a mixture of solutions of ferric nitrate and other metal nitrates and heating to 400-700‹ C., to build up a ferrite film of the formula Fe 2 O 3 .MO where M is Fe, Mg, Mn, Ni or Co; and finally baking at 900-1000‹ C. To provide a completely smooth initial substrate surface, a non-magnetic material (e.g. SiO 2 ) may be applied thereto prior to deposition of the ferrite film to fill up the surface pores. The, non-magnetic material may then be substantially removed, leaving the pores filled.
Patent GB-1446886-A (GB)
Title: Production of a uniform continuous assemblage of fibres
IPC: D01G23/04
Filed: 1973-12-05
Abstract: 1446886 Automatic control of fibre density MASCHINENFABRIK RIETER A G 5 Dec 1973 [5 Dec 1972] 56432/73 Heading G3R In an arrangement for producing a uniform, continuous, stream of fibre flock for a card 10 by adjusting the pressure gradient in a pneumatic depositing chute 2 in response to deviations in the weight per unit length or packing density from a nominal value measured at the outlet of the chute, the deviations are integrated or totalled over a predetermined feed distance before effecting adjustment which corresponds to at least one circumference of a sensing roller 4. As shown the packing density is measured, by displacement of the spring-loaded roller 4, by a detector 11 whose output is compared at 16 with a nominal value 16'. 16 also acts as an integrator over the time between pulses from 15 in response to impulses from a roller operated device 13, 14. The object is to eliminate errors due to eccentricity or non-circularity of the roller 4 or random lumps. The sign of the deviation is detected at 17 whose output is gated to a reversible servomotor M which adjusts a valve on the downstream side of chute 2 in air supply duct 1. The pressure in this duct is positive and at the bottom of chute 2 is atmospheric since it is exhausted at 7, or at a plurality of slots in walls 6, 6'. In an alternative embodiment, Fig. 3 (not shown) the deviation is periodically stored (in 21), the stored value being used to control the speed of a blower motor in duct 1.
Patent GB-1219269-A (GB)
Title: Sintering materials to produce aggregates
Inventor: QAZI ASAD SHAFI
IPC: C22B1/20
Filed: 1967-12-12
Abstract: 1,219,269. Sintering process. COAL INDUSTRY (PATENTS) Ltd. 10 Dec., 1968 [12 [Dec., 1967], No. 56434/67. Heading C1A. [Also in Division F4] Aggregate material is produced by sintering, wherein raw material is heated on a travelling conveyer by combustion of solid fuel mixed with the said raw material, and the off gases resulting from the heating process are passed through a bed of hot divided material by which the off-gases are heated and volatile matter in the gases is burnt. All or part of the off-gases pass through the hot divided material, which is preferably the sintered material, the rest of the off-gases being added to that part of the offgases which have passed through the hot divided material.
Patent GB-1437954-A (GB)
IPC: B65D5/30
Filed: 1972-12-07
Abstract: 1437954 Cartons JOHN WADDINGTON Ltd 22 Nov 1973 [7 Dec 1972] 56491/72 Heading B8P A sealed carton is opened by tearing a cover 22 along weakened lines 28, 30 whereby double thickness strips 24, 26, 12B, 14B are completely torn away so that upon subsequent cooking in the carton the food is not contaminated by the adhesive. Strips 12B, 14B are turned outwardly before being sealed to the cover 22. The ends and sides are secured together by overlapping tabs and tongue and slot connections. The carton is folded from a blank of stout carton board or a plastics sheet.
Patent GB-1282868-A (GB)
Title: Glass-making batches
Inventor: WEST-ORAM FRANCIS GEORGE
IPC: C03B1/00
Filed: 1968-11-29
Abstract: 1282868 Glass-making batches IMPERIAL CHEMICAL INDUSTRIES Ltd 20 Oct 1969 [29 Nov 1968] 56783/68 Heading C1M A glass batch in pellet form is made by forming a wet mixture of aqueous NaOH solution with a source of CaO and a source of SiO 2  in the necessary proportions subsequently to form a glass, feeding the wet mixture to a heated rotating cylinder or drum and heating it therein to at least 110‹ C., thereby removing water and allowing the NaOH to react with silica, and discharging a dry, pelleted batch from the rotating cylinder or drum. Sodium carbonate may be included in the batch provided at least 50% of the Na 2 O required for the glass is' supplied by the aqueous NaOH. The NaOH solutions used preferably contain 30-75% by weight of sodium hydroxide. The sources of SiO 2  and CaO are preferably sand and limestone respectively.
Patent GB-1198309-A (GB)
Title: Improvements in or relating to Cages for Rolling Bearings and to Rolling Bearings Incorporating Such Cages
IPC: F16C33/46
Filed: 1967-12-15
Abstract: 1,198,309. Bearings. SVENSKA KULLAGERFABRIKEN A.B. 15 Dec., 1967 [17 Dec., 1966], No. 57124/67. Heading F2A. A rolling bearing cage comprises axial webs 3 to space rolling elements, each web being connected at respective ends to respective adjacent webs by ring segments 5, the ring segments having or constituting radially outwardly extending projections 6. The projections 6 locate the cage in outer race 10. The radius of curvature of the outer surface of projections 6 is less than that of the raceway 7 to facilitate formation .of a lubricant film between these parts. In Figs. 3 and 4 (not shown) ring segments are formed by radial and axial flanges 17, 18.
Patent GB-1154390-A (GB)
Title: Improvements in Building Construction involving Pre-Fabricated Box like Units
Inventor: LOWE JAMES NEVILLE
IPC: E04B1/348
Filed: 1966-12-21
Abstract: 1,154,390. Erection of buildings; room units. LOWE & RODIN. 13 March, 1968 [21 Dec., 1966], No. 57144/66. Headings E1A and E1S. In a method of erecting a multi - storey building such as a block of maisonettes from room units 1 as disclosed in Specification 985,338 and wherein the units are interconnected by concrete placed in situ in the spaces between the units which serve as shuttering therefor, a layer of crushable foamed plastics 23 is interposed between vertical load carrying members in the walls of the units and the concrete. The plastics is strong enough to support the dead weight of the wet concrete but is subsequently crushed by deflectors of the horizontal concrete slabs or beams 18 under live load conditions so that the vertical load carrying members in the walls of the units are relieved of further loads from the construction above.
Patent GB-1442748-A (GB)
Title: Process for the production of tartaric acid
IPC: C07C51/367
Filed: 1972-12-12
Abstract: 1442748 Tartaric acid IMPERIAL CHEMICAL INDUSTRIES Ltd 9 Nov 1973 [12 Dec 1972] 57207/72 Heading C2C Tartaric acid is prepared by oxidizing maleic acid, maleic anhydride or fumaric acid in the presence of (i) palladium, a palladium (II) salt or a vanadyl salt as catalyst, (ii) an oxidizing agent which is capable of maintaining the palladium palladium (II) salt or vanadyl salt in its active oxidation state and (iii) an organic solvent for the maleic acid, maleic anhydride or fumaric acid. Exemplified catalysts are palladium on a charcoal support, palladous acetate, chloride, bromide and nitrate, and vanadyl sulphate. Perchloric, fluoboric, or sulphuric acid may also be used as co-catalyst. Nitric acid is preferred as oxidizing agent.