baber/WOPTO huggingface dataset:
Patent GB-617808-A (GB)
Title: Improvements in and relating to lifts, hoists and the like
IPC: B66B9/10
Filed: 1946-10-08
Abstract: 617,808. Lifts. NAAMLOOZE VENNOOTSCHAP MACHINEFABRIEK BREDA VOORHEEN BACKER EN RUEB. Oct. 8, 1946, No. 30045. Convention date, March 27, 1944. [Class 78 (iii)] In a lift system of the kind in which the cage is suspended from a pair of vertical endless chains, each chain 10 has members 6, 7 pivoted to it at 8, 8a, which members are connected by a pivot pin 5 on which is mounted a roller 4. This roller engages with a slot 3 in a member 2 depending from the bottom of the cage. The roller may be replaced by a connecting rod which is pivoted to the pin 5 and to the cage.
Patent GB-1500790-A (GB)
Title: Fluidized reactor reduction of uf6 to uo2
IPC: C01G43/025
Filed: 1975-07-18
Abstract: 1500790 Production of uranium dioxide EXXON NUCLEAR CO Inc 18 July 1975 30243/75 Heading C1A Sinterable UO 2  is made by contacting a fluidized bed of uranyl fluoride solids at a temperature of 730‹-780‹ C. countercurrently with excess steam to convert said uranyl fluoride to U 3 O 8  and thereafter fluidizing the U 3 O 8  at 450-500‹ C. while countercurrently contacting the bed with excess H 2  in the presence of steam to form UO 2 . The fluidized bed of UOF 2  solids may be established by introducing UF 6  (14) and steam into a bed of seed particles of UOF 2  solids (1) at a temperature of 658-780‹ C. The solids formed are passed to a second bed 1a maintained at 730-780‹ C. preferably 750-760‹ C. and excess steam 15 is passed through the bed. U 3 O 8  formed is passed to a second fluidized bed 2 where it is fluidized at a temperature of 450-500‹ C. with excess H 2  and steam, the ratio of H 2  to U 3 O 8  preferably being 2À5-3:1 and the ratio of H 2  to steam preferably being in the range 1À5-2:1. In another embodiment a single bed of UOF 2  seed crystals is employed at a temperature of 730-780‹ C. and the excess steam is used to convert UOF 2  formed to U 3 O 8 . In either event, the mole ratio of steam UF 6  introduced is preferably in the range 5-10:1.
Patent GB-781056-A (GB)
Title: A method of and means for indicating a predetermined low level of molten metal in a metal-pouring ladle
Inventor: HAMILTON ARCHIBALD MILLAR
IPC: G01F23/24
Filed: 1951-12-28
Abstract: 781,056. Indicating liquid levels. COLVILLES, Ltd. Dec. 29. 1952 [Dec. 28, 1951; June 11, 1952], Nos. 30282/51 and 14648/52. Class 123(1) A metal-pouring ladle 1, Fig. 2, is provided with means for indicating a predetermined low level of molten metal therein, said means comprising upper and lower electrodes 7, 8 preferably in the form of steel pins which project through the refractory lining 3 of the ladle and are connected by insulated wire leads 11 to a plug 13 on the said ladle, the upper electrode 7 being located at the predetermined level and an ammeter, not shown, being connected to the plug 13. During the pouring- out operation the level in the ladle will fall, and when the layer of slag 15, which is at a higher temperature than the metal, reaches the electrode 7 an electric current is generated (Thomson effect) which affects the ammeter and, if desired, also operates an audible or visual signal. In a modification. Fig. 6, the electrodes 7, 8, with projecting ends 7A, 8A, are mounted within a hollow refractory member 18 extending through the bottom of the ladle and are connected in an electric circuit with a shunted ammeter 14.
Patent GB-1083492-A (GB)
Title: Rotary lamps
IPC: G08B5/36
Filed: 1964-07-31
Abstract: 1,083,492. Rotary beacons. M. C. HARLEY. Oct. 28, 1965 [July 31, 1964], No. 30291/64. Heading F4R. A rotary lamp especially for use to illuminate large areas or as a warning beacon consists of a light source 1 at the focus of a reflector 2 which is mounted for rotation about a horizontal axis in a fork 5 mounted for rotation about a vertical axis, at least one motor being provided for producing the rotation. The reflector 2 is carried by a shaft in bearings 4 driven by a belt 2a from a pulley on a motor 10, the opposite bearing 3 of the reflector rotating about the support tube 8 for the lamp. The fork 5 carries the motor 10 and is itself rotated by a second motor 17 through gearing 16. The lamp filament is preferably at the point of intersection of the axes of rotation. The upper half of the lamp may be enclosed by a hood having an internal reflecting surface, or a plane mirror may be mounted above the lamp to direct the light downwards. Louvres 6 and side plates 7 may be used to delimit the beam.
Patent GB-484908-A (GB)
Title: Improvements in or relating to permanent magnets prepared by compressing finely divided magnetic material
IPC: H01F1/06
Filed: 1936-11-07
Abstract: A permanent magnet consists of steel particles pressed together after rapid quenching in water, an aqueous solution or a freezing mixture, or in the case of precipitation hardenable materials, oil, the latter class of steels being quenched from a temperature near the upper limit of the region of mixed crystal formation and the martensitic steels being quenched from 875-975 DEG  C.  The following iron alloys are referred to: (a) 35 per cent of cobalt, 5 per cent of chromium, 5 per cent of tungsten, 1 per cent of molybdenum, and 1 per cent of carbon, quenched from 930-960 DEG  C.; (b) 22-25 per cent of nickel and 10-14 per cent of aluminium, quenched from 1250-1325 DEG  C., and annealed at 625-700 DEG  C.; (c) 24-27 per cent of nickel, 10-14 per cent of aluminium, 4-6 per cent of copper, and 4-6 per cent of cobalt, quenched from 1250-1325 DEG  C., and annealed at 625-700 DEG C.
Patent GB-935026-A (GB)
Title: Direct current electric motor control circuits
Inventor: KING JACK ASHER
IPC: H02P7/06
Filed: 1960-09-02
Abstract: 935,026. Automatic speed control. BRITISH OXYGEN CO. Ltd. Sept. 1, 1961 [Sept. 2, 1960], No. 30441/60. Class 38 (4). The speed of a D.C. motor is maintained constant by arranging for a centrifugal governor to vary the impedance between two terminals of a three terminal semi-conductor device connected in a motor circuit. As shown, the device is a PNP-type transistor 5 and the emitter to collector impedance is kept low at low motor speeds by closure of governor contacts 9, thus connecting the base 7 to the collector 4 through a resistor 8. The contacts open at high speed to increase the impedance and thus slow the motor. In an alternative arrangement also using a transistor (Fig. 2, not shown) the base is permanently connected through a resistor to the collector, and the impedance is varied by using the governor contacts to short circuit the base to the emitter at high speeds, the short being removed at low speeds. A second alternative arrangement (Fig. 3, not shown) employs a solid state controlled rectifier in the armature circuit of a shunt motor, triggering being effected by a low voltage source switched by the governor contacts. In this case the armature is supplied by full wave rectification of an adjustable A.C. supply, the adjustment being made to suit the speed setting of the governor to reduce hunting. It is stated that several semi-conductor devices may be connected in parallel to increase the load capacity, that they may alternatively be connected in the motor field circuit, and that the motor may feed electrode wire in an arc welding apparatus. Specification 848,435 is referred to. Reference has been directed by the Comptroller to Specification 847,133.
Patent GB-1273171-A (GB)
Title: Magnetic tape recording and reproducing device
IPC: G11B15/68
Filed: 1969-06-16
Abstract: 1,273,171. Cams. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 16 June, 1969 [30 Aug., 1968 (13); 29 Oct., 1968 (2)], No. 30450/69. Heading F2K. [Also in Divisions G4-G6] A rotatable cam assembly for controlling the operation of a magnetic tape cassette player (see Division G5) comprises a lower section driven by a worm 95 and having radiallyacting cam surfaces 69, 71 co-operating with spring-loaded pivoted levers, and a face cam 82 co-operating with a roller 119 journalled on a pivoted plate 47 carrying the upper section of the cam assembly which has a radially-acting surface 73 co-operating with a roller 65 on a slide and which is coupled for rotation with the lower section by a pin 78 and socket.
Patent GB-492132-A (GB)
Title: Improvements in television receivers
IPC: H04N3/32
Filed: 1937-11-06
Abstract: 492,132. Television. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Nov. 6, 1937, No. 30514. Convention date, Nov. 9, 1936. [Class 40 (iii)] A carrier wave, modulated by the received picture signals, is supplied to means 8 for deflecting a cathode ray in the direction of the scanning lines in a tube 2 in which a non- linear relation exists between the time, during which the electrons strike the screen, and the quantity of light emitted under the bombardment, Fig. 3 (not shown). The frequency of the carrier wave from the oscillator 24, which is supplied to the deflecting plates 8, is a multiple of the frequency of the sawtooth voltage which is supplied to the plates from an oscillator 10. The screen of the tube is of highly refractory material which is brought to incandescence under bombardment, as described in Specification 472,240. According to a modification, the received modulated carrier is applied directly to the deflecting plates, Fig. 2 (not shown).
Patent GB-1202870-A (GB)
Title: Improvements in or relating to weight selecting mechanisms and hardness testing machines
Inventor: ASTON WILLIAM CHARLES
IPC: G01N3/54
Filed: 1966-12-20
Abstract: 1,202,870. Hardness testing machines. IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd. Dec.4, 1967 [Dec.20, 1966; July 3, 1967], Nos. 56963/66 and 30579/67. Heading G1S In a hardness tester for testing the hardness of metals above 2000C, there is provided a specimen container 1, and a removable dome shaped portion 3 slidably mounted on guide means 5 under control of gear assembly 6, the member 3 having an observation part 3a and being surrounded by tubing 13 carrying a coolant fluid. Within the container 1 an anvil 15 is mounted on sleeves 18, 19 provided with entrance and exit passage for coolant fluid, the specimen being supported on a tungsten bed heated by a coil 24. A tungsten indenter 27 as described in the Specification 1,162, 680 is suspended above the specimen by a triangular plate mounted on tubes 29, the lower ends of which extend through holes 30 in the container wall, and being connected to member 31 of a weight selecting mechanism. Weights 33 are supported on member 31 and are selectively engaged by pivoted latches 35 mounted on tube 38 the latches being held in the weight-engaged or the weight disengaged position by spring loaded plungers 39. The member 31 is vertically movable by a fluid operated jack assembly 50, 51; tube 38 and latches 35 may be rotated on ball bearings 44. As member 31 is raised, weights 33 slide over load bearing surfaces 41 of latches 35, and on lowering member 31, all weights above surface 41 are retained thereby, resulting in a reduced load on the member 31 and thus on indenter 27. Indicator means are provided for indicating the position of the indenter 27 relative to the tungsten pad 23.
Patent GB-161507-A (GB)
Title: Improvements in or relating to the manufacture of dental plates
IPC: A61C13/00
Filed: 1919-12-31
Abstract: 161,507. Joannides, C. Dec. 31, 1919. Teeth, artificial.-Pink rubber gum facings for artificial teeth are manufactured in the form of partly vulcanized strips with scalloped edges ready to fit the teeth, and are applied to the wax model and the teeth before the flasking operation. The strip a is formed with scallops b which are kneaded on to the teeth, and with ridges c in imitation of the natural gums, and may extend entirely round the set of teeth or be applied to the central portion of the denture only. The facing- strips may be strengthened by incorporating fibres of cotton, silk, or asbestos, or by the application of wire net or perforated metal to the facing or to the base or red rubber at the back of the pink facing-strip.
Patent GB-1513307-A (GB)
Title: Coated coextruded polyester support film
IPC: C09J7/35
Filed: 1975-07-22
Abstract: 1513307 Adhesive-coated polyester films MINNESOTA MINING & MFG CO 22 July 1975 [23 July 1974] 30654/75 Heading B2E Sheet material for use as a splicing tape is made by adherently coating a thermosetting adhesive layer onto the adhesion-promoting layer of a biaxially oriented and heat-set coextruded support film having a base layer of crystalline polyester and an adhesion-promoting layer of polyester having a minor degree of crystallinity and a melting point below 230C. The base layer is preferably of polyethylene naphthalate, polycyclohexane dimethyl terephthalate or polyethylene terephthalate. The adhesion-promoting layer may be the condensation product of a dicarboxylic acid component consisting of 10-100 mole percent of isophthalic acid, hexahydroterephthalic acid, sebacic acid, succinic, adipic, azelaic, suberic, pimelic or glutaric acid and 90-0 mole percent of terephthalic acid with a glycol e.g. ethylene glycol, 1, 3 - propanediol, 1, 4 - butanediol, neopentyl glycol, 1, 4 - cyclohexane dimethanol or bisphenol A. The two polyesters are co-extruded into a twolayer film, biaxially stretched and heat-set. The thermosetting adhesive may be a polyurethane or a nylon/epoxy resin mixture. It may be applied to the adhesion-promoting layer surface as a solvent solution by knife coating and subsequently dried.
Patent GB-502626-A (GB)
Title: Attachment for animals to carry an inscription and safety reflectors
IPC: G08B5/00
Filed: 1937-11-09
Abstract: 502,626. Road traffic reflectors. ING- RAM, T. A. Nov. 9, 1937, No. 30663. [Class 3(ii)] A reflector for attachment to the harness or collar of an animal comprises a metal plate 1 which is supported by a chain or hook engaging in a hole 4 and is provided on each side with one or-more reflex reflectors 2. These reflectors are coated on their base with reflecting material and are fixed by cement in star-shaped carrier members 3 soldered to the plate. Part of the base of the reflectors may be coated with phosphorescent paint. Alternatively, the paint may be sealed in a recess formed in the front of the reflectors. Specification 481,667, [Group XX], is referred to.
Patent GB-960382-A (GB)
Title: Drafting drive assembly
Inventor: TABOR WARNER HARVEY
IPC: F16H1/28
Filed: 1960-09-06
Abstract: 960,382. Toothed gearing. DIXIE MACHINE & TOOL CO. Sept. 6, 1960, No. 30696/60. Heading F2Q. [Also in Division D1J In a spinning frame having a plurality of drafting rolls a planetary gearing is used as part of a gearing assembly causing a back drafting roll to rotate at a slower speed than a front drafting roll, said gearing having internal and external sun gears and at least one planet gear between and meshing with both sun gears, one of the sun gears being held against rotation and the other being in the drive between said front and back rolls. In Fig. 3 the internal sun gear 25 is held stationary by a flattened end 33 of its shaft fitting in a slot 34 in an arm 13. The external sun gear 27 is mounted within a crown gear 12. Four planetary gears 26 that extend between and mesh with the internal and external sun gears 25, 27 are mounted on a plate 36 carrying a draft change gear 17. The crown gear 12 meshes with a pinion on the front drafting roll and the draft change gear 17 meshes with a pinion on the back drafting roll. In Fig. 4, the internal sun gear 41 is mounted within and carried by the crown gear 12 and the external sun gear 46 is held rigid by a stationary part of the drafting frame. Four planetary gears 45 that extend between and mesh with the internal and external sun gears 41, 46 are mounted on a plate 44 rigid with a shaft 43. The shaft 43 is splined to carry a draft change gear similar to the gear 17 in Fig. 3. The interior of each assembly may be filled with a solid lubricant via greasing nipples 50 leading to apertures 51.
Patent GB-872990-A (GB)
Title: Improvements in a machine for forming tubular necks on headers
IPC: B21C37/29
Filed: 1957-10-01
Abstract: 872,990. Flanging; forging. HUET, A. Oct. 1, 1957 [Oct. 8, 1956], No. 30750/57. Addition to 767,793. Class 83 (4). In a modification or improvement of the apparatus for producing nipples on a pipe, as disclosed in the parent Specification, means are provided for opening and calibrating the nipples formed by such apparatus. In the nipple C last made by the apparatus in the pipe A, as described in the parent Specification, there remains a cap or ligament D as the wall of the pipe was not fully pierced by the punch. To remove the ligament a percussion hammer 24 operated by compressed air is fixed to the die frame. The hammer is provided with a sleeve 26 within which slides a punch 28, the collar 27 of which limits its reciprocatory movement within the sleeve. The punch and sleeve are guided and centred by an auxiliary die 30 which surrounds the nipple and shapes it as the punch pierces the ligament. The nipple is then ready to receive the pilot pin which aligns the pipe ready for the next operation of the apparatus.
Patent GB-678101-A (GB)
Title: Improvements in or relating to two-speed gears
IPC: F16H3/66
Filed: 1949-11-30
Abstract: 678,101. Change-speed gear. CLEFF, P. H., and PARSONS & MARINE ENGINEERING TURBINE RESEARCH & DEVELOPMENT ASSOCIATION. Nov. 27, 1950 [Nov. 30, 1949], No. 30761/49. Class 80 (ii). Two speeds, both reversed, are provided between an input sun s<SP>1</SP> of a first planetary train and an output ring a<SP>2</SP> of a second, by braking at B' the interconnected first planet-carrier c' and a second sun s<SP>2</SP>, and at B<SP>2</SP> the interconnected first ring a' and second planetcarrier c<SP>2</SP>.
Patent GB-1454181-A (GB)
Title: Semiconductive ceramic compositions
IPC: C04B35/47
Filed: 1974-07-11
Abstract: 1454181 Polycrystalline semiconductive ceramic body SONY CORP 11 July 1974 16 July 1973 (2)] 30801/74 Heading C1J [Also in Division H1] A ceramic body comprising a major proportion by weight of SrTiO 3 , a minor proportion by weight of Ta 2 O 5  or Nb 2 O 5  and a minor proportion by weight of GeO 2  or PbO is rendered semiconducting by sintering in a reducing atmosphere, and insulating intergranular boundaries are provided by diffusing into the body either Bi 2 O 3  or a mixture thereof with PbO and B 2 O 3 . The diffusant may be applied as a powder or paste to major surfaces of an, e.g. disc-shaped body, and the body sintered again in an oxidising atmosphere.
Patent GB-523147-A (GB)
Title: Improvements in or relating to the bearing surfaces of moving bodies
IPC: D03J5/00
Filed: 1938-10-25
Abstract: 523,147. Shuttles. PLAISTOWE, E. R. H. Oct. 25, 1938, No. 30802. [Class 142 (iii)] [Also in Groups XXXIV. V, XXIV and XXX] Bodies movable in tubes, cylinders, or guides, e.g., shuttles moving in guideways, are provided with engaging surfaces consisting of one or more antifriction rings, bands, segments or other projections formed wholly or partially of self lubricating material and having freedom of movement relatively to the body in one or more directions, the self-lubricating material consisting of a porous metal which subsequent to its formation by pressing and centering operations is impregnated with a liquid lubricant. Such self-lubricating materials are described in Specifications 449,521, 458,829 and 488,590, [all in Group V]. Fig. 1 shows a shuttle a fitted with a self-lubricating ring c engaging a guide-surface d and movable axially on a portion of the shuttle of reduced diameter. Fig. 2 shows a piston fitted with self-lubricating rings c movable radially in grooves e. The rings c may be formed with tongues engaging cast iron, steel or other metal rings or segments in.the grooves e and may have also a certain degree of axial movement on the piston. The movement of the rings e may be restrained by springs or rubber buffers. The invention is also applicable to containers propelled through pneumatic tubes. The Provisional Specification states the lubricant may consist of grease or an alloy of low melting point.
Patent GB-618086-A (GB)
Title: Apparatus for spraying materials whilst they are being conveyed
IPC: E21F5/02
Filed: 1946-10-17
Abstract: 618,086. Laying dust in mines &c. CLAYTON, T., and HEYES, W. H. Oct. 17, 1946, No. 30959. [Class 85] [Also in Group XXX] Apparatus for spraying conveyed materials comprises a spraying head above the materials and supplied with liquid under pressure through a control valve normally held closed by means which are released by passage of the material, and a supplementary valve normally held open by the liquid pressure but provided with load-applying means operable to hold the supplementary valve closed if the material comes to rest. In Fig. 1, a spraying head 10, with nozzles 11, is adjustably supported near the discharge end of a coal conveyer 14, and is supplied with liquid by a conduit 16 in which are arranged main and supplementary control valves 20, 36, and pressure reducing and relief valves 17, 18. The main control valve 20 is normally held closed by a cam 29 on a spindle 30 connected to an arm 31 which, on engagement by coal on the conveyer, raises the cam and allows valve 20 to open; spindle 30 also carries a weighted lever 34 connected to a spring or dashpot 35 to cushion falling movement of the arm 31 and closing of the valve. The supplementary valve 36 may be similarly held closed by a cam 39 on a weighted lever 37 connected to a piston in a cylinder 41 ; a pump 43 is driven by the conveyer and circulates oil through a closed circuit 45 including a throttle valve 47 and a reservoir 42, whereby the valve 36 remains open only while the conveyer is moving. The supplementary valve 36 may be on the other side of the valve 20. In Figs. 5 and 6, a supplementary control valve 61 is normally open and supplies liquid from a pipe 64 through a T-head 65 and pipe 66 to an air vessel 67, compressing the air in the latter; the main control valve 60 is normally held closed by pivoted lever 76 pulled by a spring 77 and carrying lugs 78, 79, the lug 79 engaging a floating plate 80 pulled by a spring 81 and guided by brackets 82. A member 71, arranged in the path of the wheels &c. of coal &c. wagons, is carried by pivoted links 69, 70, link 70 being connected to the lever 76; when the wagons engage and depress member 71, lever 76 is rocked and lug 78 rocks the plate 80 to free the main control valve 60 and close the supplementary control valve 61, liquid then flowing from air vessel 67 under the air pressure and passing through pipe 66, T-head 65 and pipe 68 to the main control valve and thence through pipe 63 to the spraying head. Filters may be provided in the liquid feed conduits. The Provisional Specification describes a form in which the valve 36, lever 37 and cam 39, Fig. 1, are replaced by a spring-pressed piston valve with an annular groove forming a liquid-supply passage.
Patent GB-713415-A (GB)
Title: Improvements in or relating to a thrust block friction-reducing device
IPC: B63H23/32
Filed: 1952-12-09
Abstract: 713,415. Stuffing-boxes. OWEN, A. Dec. 9, 1952, No. 31167/52. Class 122(5) [Also in Groups XXXIII and XXXIV] A .piston 6 secured to a rotary shaft 1. and disposed within a cylinder 9 to which fluid under pressure is supplied, is sealed by packing rings 15 which are compressed between glands 14 and 16. A further seal 19, which may be lined with babbit, is secured in a self-aligning manner by means of bolts 21 and springs 22.