baber/WOPTO huggingface dataset:
Patent GB-1322879-A (GB)
Title: Anode modulation circuits
IPC: H03K5/02
Filed: 1972-06-16
Abstract: 1322879 Transistor modulator circuits SIEMENS AG 16 June 1972 [30 June 1971] 28201/72 Headings H3R and H3T In a modulator in which a D.C. pulse modulation signal is applied to the anode of a transmitter stage 39 via a transformer, demagnetization of the transformer is effected by applying current to a third winding 5c of the transformer when the modulation signal is zero. An intermittent train of unidirectional pulses (J1 ... &c., Fig. 3, not shown) applied to input 1a are amplified by transistors 10, 12, delayed by delay 3a, and then further amplified before being applied to winding 5a of the modulator transformer. The delayed pulse train is also applied via lead 9 to a network 56, 57, 59 which causes the trailing edge of the delayed pulses to turn on transistors 47, 51 and apply a demagnetizing current to winding 5c. The arrival of the next input pulse then applies a signal via diode 41 to turn on transistor 46 and cut off transistor 51. Saturation of stages 32, 36, 51 is prevented by associated diodes 38a, 38b, 52.
Patent GB-187144-A (GB)
Title: Improvements in or relating to the jointing of inner tubes of pneumatic tyres
IPC: B29B15/04
Filed: 1921-10-25
Abstract: 187,144. Whiteside, R. Oct. 25, 1921. Tyres, elastic, special apparatus for making.- In joining the ends of an air tube a having one or more internal partitions c, one end of the tube is first passed through an expansible sleeve d and folded as shown at a<2>, a<3>, Fig. 1. The. main compartment 2 of the other end is then passed over the exposed portion a<2> and the outer wall of each end displaced to allow vulcanizing-material to be applied at the butting edges of the partitions c. This internal joint is then covered with chalk or a paper &c. wrapping, and the ends of the outer wall similarly joined up. The complete joint is wrapped with paper &c. h, Fig. 5, and vulcanized.
Patent GB-631075-A (GB)
Title: Improvements relating to clamps for holding scientific apparatus
IPC: B01L9/00
Filed: 1947-10-23
Abstract: 631,075. Screw clamps. GEORGE & BECKER, Ltd., W. & J., and MORRIS, R. H. Oct. 23, 1947, No. 28311. [Class 44] [Also in Group XXIII] In a clamp for holding laboratory apparatus of the type comprising a pair of pivoted jaws opened or closed by a screw formed with threaded portions of opposite hand engaging in corresponding nut members mounted on the jaws, the screw is turned by a central wheel, the periphery of which projects above the jaws so that it can be engaged by the thumb of a hand holding the clamp. The periphery of the wheel 13 is serrated at 13a. One jaw 6 is integral with a supporting rod 7 the other jaw being pivoted thereto at 9. The jaws are recessed on the inside faces to accommodate the wheel 13 when the jaws are closed. Specification 631,093 is referred to.
Patent GB-279862-A (GB)
Title: Improvements in or relating to power hammers
IPC: B21J13/06
Filed: 1927-10-26
Abstract: 279,862. Urbanek, J. Oct. 29, 1926, [Convention date]. Fower hammers.-A friction brake or clutch interposed between the tup and lifting board &c. of power hammers to protect the lifting device from shocks is constructed so that relative movement between the tup and lifting device is accompanied by slipping of the friction device and is opposed by a frictional resistance varying according to the position of the tup relative to the lifting member and with the direction of relative movement. The brake device or the end of the lifting board &c. 2 engages in a conical or pyramidal bore in the tup 1 and comprises shoes 5 assembled between conical &c. rings 4, 6, the latter under influence of a spring 7 secured by a washer 8 and nut 9. On the upward movement the device is pulled into the narrower part of the bore and the increasing force on the shoes due to the consequent compression of the spring 7 ensures adequate force for the positive lift of the tup; when the tup strikes a blow the device moves downv-ard in the bore and the shoes 5 move outwards resulting in an extension of the spring 7 so that the brake force which is now acting against the momentum of the lifting board gradually diminishes. Since conical brake surfaces are unsatisfactory owing to their variable curvature and a pyramidal bore is to expensive to manufacture, a suitable configuration consists of a number of part cylindrical surfaces the axes of which form the edges of a pyramid, a bore with end surfaces being shown in Fig. 5, on a member L<1> which is wedged in the tup. The variable brake device may be combined with a pneumatic or a fluid brake, or with a friction brake of constant power, as shown in Fig. 3, comprising rings 10, 12 and shoes 11 coacting with another bore in the tup. In the modifications shown in Figs. 6 and 8 friction surfaces curved about horizontal axes are employed to avoid the necessity for the shoes lifting away from the brake surfaces. As shown in Fig. 6, the brake segments 19 are pivoted at 17 to rods 16 pivoted to a boss 15 on the lifting board 2 and are held against the wall of the .hole in the tup 1 by pivoted blocks 18 engaged by a wedge 21 pressed down by the spring 20. Fig. 8 shows a similar arrangement of pivoted rods 16 and brake segments 19 wherein the latter are thrust outwards by toggle links 22 connected to a slide 23, a stop 24 being provided to avoid jamming of the toggle.
Patent GB-520690-A (GB)
Title: An improved process for the manufacture of iron oxide
IPC: C01G49/02
Filed: 1938-09-30
Abstract: 520,690. Iron oxide. PRIESTMAN COLLIERIES, Ltd., and FRENCH, T. G. Sept. 30, 1938, No. 28499. [Class 1 (iii)] [Also in Group XXXVI] Iron oxide pigments are made by electrolysing a solution of a sodium or potassium salt using an iron anode. The current density may be 0.3 amps per sq. in., and the direction of the current may be periodically reversed. Air is blown into the electrolyte to oxidize the ferrous hydroxide produced. The precipitate is filtered, dried and may be heated to temperatures of 200-1000‹C. to produce oxides of various colours. Alternatively the filter cake is mixed with water to form a slurry, which is boiled with sodium hypochlorite solution. Ferrous sulphate is added and the boiling continued to produce a ferric hydroxide ochre pigment. This may also be varied in colour by calcining at different temperatures.
Patent GB-1062488-A (GB)
Title: A vulcanised moulding compound based on polypropylene and rubber
IPC: C08L23/12
Filed: 1964-07-10
Abstract: A vulcanized moulding compound is based on polypropylene with up to 50% of a copolymer of ethylene and 30 to 70% by weight of propylene. In an example stabilized polypropylene is mixed with an ethylene-propylene-rubber copolymer containing 50 weight per cent of propylene and 4 weight per cent of dicyclopentadiene and is vulcanized using conventional vulcanizing agents and accelerators, and lubricants.  The usual pigments and fillers may be added.
Patent GB-449289-A (GB)
Title: Improvements in or relating to the treatment of small articles in electrolytic baths
IPC: C25D17/06
Filed: 1935-10-16
Abstract: 449,289. Work-holders for electrolytic treatment. LANGBEIN - PFANHAUSERWERKE AKT.-GES., 76, Torgauer Strasse, Leipsic, Germany. Oct. 16, 1935, Nos. 28531 and 28532. Convention dates, Jan. 16, and May 10. [Class 41] A holder for mounting sliding-clasp fasteners during plating, anodic or other electrolytic treatment comprises a bolt 4, Fig. 1, of insulating material on which is mounted a helical metal band 1. The fasteners 3 already mounted on a fabric strip 2 are inserted between the turns of the helix and the whole compressed between a flange 7 and an insulating sleeve 5 by a nut 6. The bolt 4 is provided with longitudinal grooves to receive the fasteners. In a modification, Fig. 4, the helix is replaced by a series of metal discs 11 mounted on a metal rod 10 and separated by resilient washers 12. The discs are provided with grooves 15 to receive lugs 16 on the fasteners. In the anodization of aluminium fasteners, the metal parts of the holder may be of aluminium. The oxide layer formed on the holder may be removed therefrom after each operation by pickling in hot caustic soda solution.
Patent GB-905518-A (GB)
Title: Improvements in or relating to pneumatic tyres
IPC: B60C11/02
Filed: 1958-09-05
Abstract: 905,518. Pneumatic tyres. PIRELLI S.p.A. Sept. 5, 1958 [Oct. 26, 1957], No. 28598/58. Class 144 (2). In a replaceable tread pneumatic tyre wherein the tread unit 1 is reinforced by a cincture of circumferented wires or cords 2 so as to be circumferentially inextensible but radially and transversely flexible and thereby secured in position on the casing unit 3 on inflation of the latter, the casing unit is of rubber or the like devoid of any reinforcement except for the inextensible wire-bead cores 4. The tread cincture may comprise one or more layers of wires or cords 2 and the respective rubbery materials of the tread and casing units may be the same or different. The casing unit may be moulded about the bead cores, within a mould having fixed undeformable metal walls, by injection pour or transfer moulding techniques. Specification 864,909 is referred to. Reference has been directed by the Comptroller to Specification 700,608.
Patent GB-520937-A (GB)
Title: A method of coating a glass tube with luminescent material
IPC: C09K11/02
Filed: 1938-10-03
Abstract: 520,937. Coating glass surfaces. BRITISH THOMSON-HOUSTON CO., Ltd., and DAVIES, L. J. Oct. 3, 1938, No. 28681. [Class 56] A method of applying a coating of luminescent powder to the inner wall of a glass tube consists in blowing the powder into the tube while it is being drawn and the glass is still plastic. The tubing may be made in a machine of the Danner type, the powder being blown in with the air stream through the hollow mandrel. Lengths of the tube, intended for making into electric discharge tubes, have their ends heated to remove the luminescent powder where stems or electrode carriers are to be sealed into the tubes.
Patent GB-879190-A (GB)
Title: Improvements in or relating to the storage of sugar beet roots
IPC: A01F25/08
Filed: 1959-08-22
Abstract: Wet-cleaned sugar beets are ventilated during storage by untreated air drawn directly from the atmosphere.  The beets are laid in piles, either in the open or under cover, over piping or channelling having air exit openings directed into the piles of beets, means such as a blower being provided to force air through the openings and among the beets.  The beets are preferably treated with a disinfecting agent after cleaning and before storing.
Patent GB-781903-A (GB)
Title: Improvements in or relating to weight detectors for railway cars
IPC: G01G19/04
Filed: 1954-10-06
Abstract: 781,903. Weighing apparatus. GENERAL RAILWAY SIGNAL CO. Oct. 6, 1954 [Oct. 14, 1953], No. 28778/54. Class 143 [Also in Group XXXVII] In an apparatus for estimating the weight of a railway car, a rail 1 of the track is cut away to provide space for levers 6, 7, which are pivoted at 8 and form an inclined hump above the upper surface of the rail, which is depressed as a car wheel passes over it. A housing 11 is attached to the lever 6 and is moved by the lever 6 against a compression spring 13 in a housing 12 which is supported on auxiliary ties 23. An arm 17 is spring-pressed against an adjustable stop 20 and movement of the housing 11 in accordance with the wheel load will depress the arm 17 a corresponding amount and turn a shaft 18 operating a contactor CC. Fig. 5, which is provided with adjustable cams 30...33 operating sequentially the contact members 34...37 to establish circuits for the indicating means. Each cam is provided with a hardened insert 44, Fig. 6 , which co-operates with cam-surfaces 48. 49, on a rocker arm 45 carrying a contact finger 50 which is movable between stationary contacts 51, 52 of a contact member 34 &c. In an alternative arrangement, Figs. 7 to 12 (not shown) the rail is cut away to accommodate a single pivoted lever which is formed with inclined surfaces sloping .towards each end, a dash-pot is provided which delays the return of the lever after the load has been removed, and the contactor is operated by a spring- loaded plunger which successively closes the contacts.
Patent GB-159284-A (GB)
Title: Improvements in pneumatic tyre-covers
IPC: B60C9/06
Filed: 1919-11-20
Abstract: 159,284. McClintock, H. T. S., Moore, C. I., and Callaghan, J., (Representatives of Dunlop, J. B.). Nov. 20, 1919. Jackets and covers.-A tyre cover foundation comprises bands each formed of two plies E of parallel threads or cords with a separating layer F of rubber, the threads &c. of the two layers crossing at an angle of less than 90‹ and making an angle of more than 45‹ with the tyre edges. The rubber layers F increase in thickness from the tread, and may be built up by successive application of solution.
Patent GB-1318558-A (GB)
Title: Electrostatographic developer
IPC: G03G9/107
Filed: 1970-06-15
Abstract: 1318558 Carrier beads XEROX CORP 15 June 1970 [19 June 1969] 28849/70 Heading G2H In an electrostatographic developer for magnetic brush development comprising toner particles and carrier beads, the beads comprise uncoated nickel which is at least 98% pure and has a particle size of 30-1000 microns. Toners are specified.
Patent GB-426009-A (GB)
Title: Improvements in or relating to the rings and travellers of spinning and twisting frames
IPC: D01H7/60
Filed: 1933-11-18
Abstract: 426,009. Rings and travellers for spinning and twisting frames. EADIE BROS. & CO., Ltd., Victoria Works, and POWRIE, T. K., 10, Greenlaw Avenue, both in Paisley, Renfrewshire. Nov. 18, 1933, No. 28905. [Class 120 (ii)] Rings for spinning and twisting frames are provided with a track a of rounded shape forming, in crosssection, part of a true circle, and arranged vertically, as shown, or inclined inwardly or outwardly, and the traveller B is so shaped that when it is in the normal angular running position 5 it contacts fully with substantially the whole of the track. A recess a<1> may be made in the ring to afford clearance for the yarn, or the traveller may be shaped as at b<1> for this purpose. A part corresponding to b<1> may be formed in each tail so that the traveller may be mounted either way.
Patent GB-717906-A (GB)
Title: An improved method of and apparatus for use in the recovery of coal from the water borne suspension of coal and dirt which forms the residual product in washing and screening coal and in the treatment of coal to reduce the ash content
IPC: B03D1/24
Filed: 1950-11-27
Abstract: 717,906. Cleaning coal. NATIONAL COAL BOARD, CHAMBERLAIN, E. A. C., WATERS. P. L., and ROBERTSON, W. S. Feb. 25, 1952 [Nov. 27, 1950], No. 28921/50. Class 82 (2) Coal is recovered from a water-borne suspension which may contain dirt by a method wherein a conditioning agent, a frothing agent and air are introduced into a main flow of the suspension, the main flow containing said agents and air is subjected to a mixing and agitating action, and a part only of the main flow is, then treated for removal of the froth formed thereby, a part of the aerated and agitated main flow variable at will being byepassed, without froth removal, to unite with the main flow prior to the mixing and agitating action. The air and agents may be introduced into the main flow immediately prior to the mixing and agitating action, and that part of the flow of the suspension from which the froth is removed is led into a quiescent zone above and in communication with a turbulent flow zone, the tailings being removed from the lower part of the latter. An apparatus suitable for use in the method comprises a tank a having an inlet and an outlet, a centrifugal pump e having an inflow pipe d and an outflow pipe c<SP>1</SP> delivering to the tank inlet, means j for delivering air and conditioning agents to the pump, and a valvecontrolled by-pass g between the inflow and outfiow pipes.
Patent GB-1234795-A (GB)
Title: Tape carrying a succession of identical electrical components
IPC: H05K13/00
Filed: 1968-06-18
Abstract: 1,234,795. Packaging and unpackaging electrical components. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 18 June, 1968 [21 June, 1967], No. 28927/68. Heading B8C. Prismatic shaped electrical components are secured on a tape for dispensing to automatic circuit board mounting means the tape width being at least 0À4 of the component body height, the conductor length being no more than 0À5 of that height and the spacing between the conductors of one component and the body of the next on the tape being at least 0À2 of that height. The conductors do not project beyond the bodies to either side of the tape so that the loaded tape may be fed through a close fitting channel 6 and the tape itself stripped off through a slot 7 while the components are pushed forward to a mounting jig &c. Several channels may be arranged in a pattern corresponding to that of the components on the board. The components may be secured to the tape by adhesive.
Patent GB-1359306-A (GB)
Title: Casing bodies for forming spaces in parts of buildings to accommo date heating elements
IPC: E04B5/48
Filed: 1971-06-21
Abstract: 1359306 Heating building structures J PFISTER 21 June 1971 [30 June 1970] 29050/71 Heading E1W [Also in Division F4] A floor or ceiling structure includes a number of cover members 14 defining spaces for heating pipes 10 having transverse heat conducting metal sheets 13 clamped thereto. The cover members are made of plastic material and comprise a plurality of side by side spaces 1. Each space is bounded by a top wall 4 and longitudinal and transverse walls 2, 3. The transverse walls of adjacent spaces are connected together by a base web 5 and a tunnel portion 7 and have recesses (6, Fig. 3) for the heating pipe. The tunnel portion 7 has slots 8 adapted to receive wire clips 9 for fastening the cover member to the heating pipe. A concrete layer 15 covers the members 14 and a floor covering 16 covers the concrete layer. An insulating layer 12 is interposed between the cover members 14 and the ceiling 11.
Patent GB-755088-A (GB)
Title: Gas valve with thermally controlled ignition safety device
IPC: F23N5/10
Filed: 1954-10-11
Abstract: 755,088. Valves. VAILLANT, H., [trading as VAILLANT KOMM-GES., J.]. Oct. 11, 1954 [Oct. 10, 1953], No. 29171/54. Class 135. A gas valve 15 or 16 has a thermally-controlled ignition safety device in which an arresting member, e.g. the armature 11, is axially moved by a knob 3 against a spring 8 into the region of a thermally-controlled holding device, e.g. the electromagnet 12 energized by a thermocouple heated by a pilot jet 17, and a control cam 19 or 20, movable with the member 11 and rotatable by the knob to actuate a valve 16 or 15 respectively. The armature 11 is rotatably mounted on a member 7, 9 carrying the cams and the knob spindle 2 has a sliding splined connection 6 within the member 7. On depressing the knob 3 against the spring 4 a knob pointer enters a recess in a collar 23 which only allows the cam 19 to be turned sufficiently to open the pilot valve 16. With the pilot burner 17 ignited and the holding device 11, 12 acting, the knob is released and its pointer rotates above the collar 23 so that the cam 20 can now open the gas valve 15 leading to the burners 13.
Patent GB-869725-A (GB)
Title: Improvements relating to pyrophoric lighters, in particular table lighters
IPC: F23Q2/08
Filed: 1959-08-27
Abstract: 869,725. Pyrophoric lighters. KOLLISCH, B., [trading as KOLLISCH GEB.]. Aug. 27, 1959 [Sept. 25, 1958], No. 29327/59. Class 75(3). In a pyrophoric lighter, the friction wheel d is actuated by a toothed element k driven by a pressure plate f which is guided, as by a push-rod g in a bearing sleeve h, for rectilinear movement and acts on a spring controlled rocker r. The pressure plate f Fig. 2 has two side cheeks i 1 , i 2  which carry racks k meshing with pinions l on the friction wheel shaft m; it is depressed against the action of a return spring n Fig. 3, an extension o Fig. 1, of which bears on the lighter top, while 'an extension q acts on a rocker r, forked to receive the shaft t of two rollers u 1 , u 2  which move over the under-surface of the plate f.
Patent GB-1067407-A (GB)
Title: Improved multistage flash evaporator
IPC: B01D3/00
Filed: 1965-07-12
Abstract: 1,067,407. Multi-stage flash evaporators; desalination of sea water. UNITED STATES ATOMIC ENERGY COMMISSION. July 12, 1965 [July 28, 1964], No. 29415/65. Heading B1B. A multistage-multilevel sea water flash evaporator comprises a concrete shell with a protective liner, of e.g. steel, a series of vertically disposed trays 2 divided by baffles 3, 5 into a plurality of stages which are at gradually decreasing temperature and pressure, condenser tubes 6, 7 extending on either side of the trays through which brine from the final stage is recycled together with fresh sea water so heating the water and condensing the vapours from the evaporation stages on the tubes for collection as product liquid in troughs 8. Raw sea water enters through twin conduits 9 and after passing through tubes 6 and absorbing heat from six stages the warmed sea water from the tubes serving the lower trays is returned to the sea water reservoir 12 while the water from the tubes serving the upper trays passes via header 10 and conduit to a deaerator 14, being treated at 13a with sulphuric acid. After removal of non-condensible gases by pump 15 this makeup feed joins brine from the final stage in chamber 17 and is pumped through twin conduits 24 to condenser tubes 7 extending past the remaining stages. The warmed water leaving tubes 7 is further heated e.g. by steam from a nuclear reactor before being returned through header 18 to the first stage of the evaporator.
Patent GB-395737-A (GB)
Title: Improvements in or appertaining to the manufacture or treatment of paper for use in electrical insulation
IPC: H01B3/48
Filed: 1931-10-23
Abstract: 395,737. Condensers. STANDARD TELEPHONES & CABLES, Ltd., SCOTT, T. R., and FIELD, M. C., Connaught House, Aldwych, London. Oct. 23, 1931, No. 29443. [Class 38 (ii).] Paper for condensers &c. is obtained by treating the dry fibre or paper by a controlled process of partial acetylation such that the product is substantially free from tri-acetate; paper so treated retains its mechanical strength and is less absorbent to moisture, but may be impregnated. According to the Provisional Specification, paper or dried pulp is partially esterified or etherified. Specification 372,312 is referred to.
Patent GB-340500-A (GB)
Title: Improvements in or relating to the immunising of grain
Filed: 1929-09-30
Abstract: Seed grain is immunized by treatment with a quinone imide or a derivative thereof.  Other fungicides, fillers, adhesives or wetting agents may be added.  Active substances specified are p-quinonechlorimide, o-toluquinonechlorimide, 1,4-benzobischlorimide, 1,2 naphthoquinonechlorimide, and 2-amino-1,4-quinoneimide hydrochloride.  Talc is specified as a filler and dextrin as an adhesive.
Patent GB-1214794-A (GB)
Title: Inorganic zirconium-based silicate pigments
IPC: C09C1/00
Filed: 1969-06-11
Abstract: 1,214,794. Zirconium - based pigments. FERRO CORP. 11 June, 1969 [12 June, 1968], No. 29650/69. Heading C1M. An inorganic zirconium-based silicate pigment is produced by reacting an alkali metal or alkaline earth metal zirconium silicate in substantially dry state with a mineral acid to form a salt of the acid and calcining the mass obtained with a colour-inducing metal compound. The said colour-inducing metal compound may be, e.g., an oxide of Fe, V, Cr, Pr, Sn or Co. The acid may be HCl, HNO 3  or H 2 SO 4 , and preferably the stoichiometric amount with respect to the silicate is used. The calcination may be at 1750-2000‹ F. Fluxes comprising NaF and NaCI and/or Na 2 SiF 6  may be added before calcination. The silicate is preferably formed by reacting zircon with less than the stoichiometric amount of an alkali metal or alkaline earth metal compound.