baber/WOPTO huggingface dataset:
Patent GB-1313717-A (GB)
Title: Horological balance-wheels
IPC: G04B17/06
Filed: 1970-07-29
Abstract: 1313717 Watch balances FREDERIC L'EPPE ET CIE 29 July 1970 [31 July 1969] 36775/70 Heading G3T A balance wheel comprises a rim 1, arms 2 and hub 3 of thermoplastic material moulded as a single piece, the hub being secured to a metal arbor 4 having an enlarged part 17. The thermoplastic material has flexible properties to give protection against shock and a material is chosen which has a constant flexibility over the normal range of ambient temperature. To increase the inertia of the wheel the rim 1 is provided with a metal ring 22 formed of two annular parts 23, 24. Concentric steps 7, 8 formed integrally with the hub 3 provide a roller for co-operating with the fork of the escapement lever, (not shown). An impulse pin 11 is mounted in a hole 12 in the hub. In modifications Figs. 3, 4, (not shown) the arms 2 are formed with bends to increase the shock proof quality.
Patent GB-1098940-A (GB)
Title: Improvements in or relating to telecommunications cables
Inventor: GILBERT PETER DEREK
IPC: H01B13/22
Filed: 1965-08-27
Abstract: 1,098,940. Cables. PIRELLI GENERAL CABLE WORKS Ltd. July 7, 1966 [Aug. 27, 1965], No. 36954/65. Heading H1A. A cable having a stranded conductive core with impermeable fluid barriers, which may be formed as in Specification 1,006,897, spaced along its length is wound with at least one perforated tape before sheathing, the barrier material exuding through the perforations to form a complete cross-sectional seal within the sheath. The tape may be paper, polyethylene or P.V.C. The barrier material may be thixotropic. A further layer of barrier forming material may be applied to the outside of the tape wrapping, and/or an additional imperforate tape of P.V.C., polyethylene or other material which amalgamates by fusion with the sheath which may be of the same material, can be applied before sheathing.
Patent GB-1273253-A (GB)
Title: Improvements in and relating to abrading tools
IPC: B24D18/00
Filed: 1969-07-23
Abstract: 1,273,253. Abrasive tool. CARBOND CORP. 23 July, 1969 [25 Sept., 1968], No. 37075/69. Heading C4V. An abrasive tool is obtained by (a) tumbling abrasive grains with a metallic additive in proportion of 0À1-25% by weight, to adhere the metallic additive to the grains, (b) applying to the grains a temporary binder solution which volatilizes on baking, (c) coating the grains with clay and frit comprising 10-80 parts clay and 15-80 parts frit and a particulate hydrocarbon constituting 20-70 parts solid hydrocarbon and 80-30 parts of a substantially inert filler to form composite particles having grains coated with powdered metallic additive, clay, frit and a particulate hydrocarbon, (d) compressing the mixture into a rigid body, (e) baking the body at 250-500‹ C. and (f) slowly firing over a period 3-24 hours at 475-2200‹ C. in a reducing atmosphere to dehydrogenize the hydrocarbon, devolatilize the temporary binder, melt the clay and frit and bond the abrasive grains into the formed matrix. The abrasive grains may be aluminium oxide, silicon carbon, diamond, titanium diboride, boron carbide, tungsten carbide, titanium carbide, molybdenum carbide or chromium carbide. The metallic additive is a metal or a metal compound and specified are silicon, silicon containing 0À1-10% iron, copper and chromium. Numerous suitable temporary binders are specified such as a solution of sugar, a natural or synthetic resin, oils and greases. The particulate hydrocarbon may be anthracene, tar, pitch, chlorinated paraffin, phenolic resin or any other hydrocarbon which will form free carbon during the firing. The filler may be graphite, zircon, zirconia, petroleum coke, silica, titanium or mixtures of these.
Patent GB-885595-A (GB)
Title: Improvements in or relating to the casting of metals
Inventor: RICHARDSON ROBERT
IPC: B22D7/10
Filed: 1959-11-02
Abstract: An exothermic composition suitable for use in the casting of metals is mixed with peat, e.g. in the proportion of 5-50% by weight of the composition.  The mixture may be used as such or may include a binder and be formed into sleeves, tiles or plaquettes.
Patent GB-940594-A (GB)
Title: Improvements in and relating to non-return valves
Inventor: TAYLOR CECIL ISAAC
IPC: F16K15/04
Filed: 1960-10-28
Abstract: 940,594. Valves. LESLIE HARTRIDGE Ltd. Oct. 18, 1961 [Oct. 28, 1960], No. 37156/60. Heading F2V. A non-return valve comprises a hollow body 11 seated on base 17a having inlet 20, a seat member 19a within the body with a seat 21, a resilient circular or oval sectioned ring 23 surrounding the seat and engaging the body inner wall, and a movable valve member 24 which seals with the ring before engaging the seat, the ring sealing between the valve and seat and between the seat member and the body. The valve 24 may be a ball or disc and the seat member may be integral with the base.
Patent GB-915201-A (GB)
Title: Improvements in or relating to means for counting electric impulses
Inventor: LEWIS IVAN JACK WAKE
IPC: H03K21/02
Filed: 1957-11-28
Abstract: 915,201. Counters. ASTARON ELECTRONICS Ltd. March 2, 1959 [Nov. 28, 1957], No. 37199/57. Class 106 (1). An arrangement for summating the pulses from a plurality of sources comprises a storage unit in respect of each source, said storage unit being set at the reception of a pulse and all of said storage units being scanned sequentially so as to feed out a pulse in respect of each stored pulse to a summating device, the frequency of the scanning of each storage unit being greater than the possible recurrence frequency of the pulses from the related source. Sources such as watt-meters supply pulses at 13 to related storage units B. A scanning unit A scans all the units B in succession to reset the units B, any unit B which is reset sending an output pulse to an electromechanically-operated summator C of the type described in Specification 892,486. The pulses may also be sent to a recorder D. Each unit B may also have an individual counter. Details of the storage and scanning units are given. For use in a power station, imports and exports of current may be fed through differential mechanism to the summator C.
Patent GB-1076431-A (GB)
Title: Mould materials
IPC: B22C1/18
Filed: 1962-10-02
Abstract: 1,076,431. Mould and core materials. A. K. SIMONOV. Jan. 2, 1964 [Oct. 2, 1962]. No. 37270/62. Heading B3F. A mould or core is formed from a material which at least at the moulding surface comprises a binder and at least 75% of an alkaline earth metal carbonate. The binder may be sodium silicate, sodium aluminate, or sodium hydroxide and the metal carbonate calcium or magnesium carbonate. The calcium carbonate may be in a natural form such as marble, calcite, aragonite, chalk or limestone. The magnesium carbonate may be in the form of magnesite or dolomitized limestone. Mixtures. of calcium carbonate such as limestone and bitumen may be used and also combinations of the various forms of carbonates.
Patent GB-806300-A (GB)
Title: Improvements relating to brazed light alloy heat-exchangers
Inventor: HARRIS MICHAEL GODFREY
IPC: B21D53/08
Filed: 1956-12-06
Abstract: 806,300. Making heat exchangers; brazing. MORRIS MOTORS Ltd. May 24, 1957 [Dec. 6, 1956], No. 37283/56. Classes 83 (2) and 83 (4). [Also in Group XIII] Relates to brazed light alloy heat exchangers comprising a matrix of thin-walled tubes 1 of elongated quasi-rectangular cross-section spaced apart by interposed secondary heat transfer elements, e.g. corrugated members 9 of thin metal, the ends of the tubes being secured in tube plates assembled from channel section strips 3. According to the invention the tube noses 6 (i.e. the shorter, or end walls of the tube section) are arranged to project longitudinally beyond the ends of the tubes, the adjoining ends of neighbouring channel-section strips 3 and the tube nose extensions being reciprocally shaped to effect interlocking engagement. In the form shown, the ends of the strips 3 are formed (e.g. by cutting and then bending) into hook members 8 which are adapted to snugly receive the spade-like terminations 7 of the tube noses 6. The tube assembly is bounded at each side by a plate 4 lugs 11 on which are bent over as shown in Fig. 1 to hold in position the header boxes 10 before the whole unit is brazed in a salt bath. The tube nose extensions 7 and the hook portions 8 of the members 3 may be inclined to the matrix face as shown in Fig. 6. The tube noses may be of folded material as shown in Fig. 2, or they may be solid or of channel section material.
Patent GB-1141507-A (GB)
Title: Improvements relating to electric storage batteries
Inventor: FIELD BRAHAM ROWLEY
IPC: H01M10/34
Filed: 1965-09-01
Abstract: 1,141,507. Accumulators. ALKALINE BATTERIES Ltd. 30 Nov., 1966 [1 Sept., 1965], No. 37337/65. Addition to 1,080,992. Heading H1B. The invention comprises a multiplate alkaline storage cell in which the electrolyte level is normally above the top of the plates. The upper parts of the plates are separated by absorbent gas permeable material and contain recesses in their surfaces bounded on their outer side by separator material. The plates are mounted in a compartment which is closed at the top but communicates below the liquid level with an expansion space so that if gases are evolved during charging they depress the electrolyte surface below the tops of the plates but the exposed parts of the plates are still in contact with electrolyte absorbed in the separator material. In a particular embodiment an alkaline cell has alternate Ni and Cd plates comprising metal pockets containing active material occasionally separated by recesses 14. The plates may be separated at the top by woven or felted material 12, at the bottom by pins or rods of rubber or plastics material 15 and at the edge by insulators 16. Gas liberated during charging collects in hood 19, forcing the liquid level outside the hood to rise and air to escape through vented plug 21. In other embodiments the pockets and recesses in the plates may be vertical rather than horizontal; the hood may extend to the bottom of the plates but have open - ings above the bottom of the absorbent separators and the cell as a whole may normally be gas tight having a gas tight stopper and/or a safety valve. The expansion space may be of bellows construction or may accommodate liquid merely by compression of the gas inside it. The cell may have a negative plate of greater capacity than the positive plate so that O 2  is evolved during charging rather than H 2  and may be charged from a source of constant potential.
Patent GB-928217-A (GB)
Title: Improvements in or relating to control systems for a slab/edge rolling mill
Inventor: BRAMLEY LIONEL NAPIER
IPC: B21B37/60
Filed: 1958-11-20
Abstract: 928,217. Control systems. BRITISH IRON & STEEL CORPORATION. Nov. 18, 1959 [Nov. 20, 1958], No. 37364/58. Class 40 (1). [Also in Group XXII] A control system for setting a rolling mill for slab and edge rolling comprises two independent electrical control means selectively operative to perform the two operations alternately. The system is particularly suitable for potentiometer control as in Specification 843,769. In the Figure a hand-wheel H is geared to one or other of two potentiometers SP and EP by means of electromagnetic clutches SC and EC respectively. The switch SES which selects the appropriate clutch to be energized also connects the output of the corresponding potentiometer to a comparator C where it is compared with the setting of a further potentiometer OP attached to the roller screwdown mechanism. Any difference produces an error signal which aligns the screwdown setting with the desired setting, and a velocity feedback signal may be added if desired. The handwheel can be replaced by push buttons if incremental control is desired. According to the Provisional Specification, such a control system may be applied also to the adjustment of the lower limit of movement of a forging press.
Patent GB-1096566-A (GB)
Title: Improvements in frequency controlled semiconductor junction laser
IPC: H01S3/106
Filed: 1965-09-02
Abstract: 1,096,566. Frequency modulated semiconductor lasers; semiconductor devices. GENERAL ELECTRIC CO. Sept. 2, 1965 [Sept. 24, 1964], No. 37578/65. Headings H1C, H1K. A frequency modulated semiconductor junction laser comprises a direct transition semiconductor crystal body 1 having plane parallel reflecting ends 16<SP>1</SP>, 17, a degenerately doped P type region 2 which is partly split into two regions 5, 6 connected by an integral bridge 7, a PN junction plane 4, and a degenerately doped N type region 3. In operation, a pulsed, high density, direct current is passed between electrodes 12 and 16 to cause lasing. A d.c. source 24 neutralizes the incidental forward biasing between electrodes 13 and 16 and an a.c. modulating current is applied between electrodes 13 and 16. An equivalent circuit is described with reference to Fig. 2 (not shown) and the operating characteristics with reference to Fig. 3 (not shown) The crystal body 1 may be GaAs, InSb, InAs, InP, GaSb and alloys therebetween or may be an alloy of GaAs and GaP and may be doped with S, Se or Te as a donor and Zn, Cd, Hg, Mg as an acceptor. Also, Sn, Ge, Si may be used as either donors or acceptors depending on the particular semiconductor. Alternatively, PbS, PbSe or PbTe may be used with In as a donor and excess anion as an acceptor. The required pumping current may be reduced by operating at 77‹ K or 20‹ K.
Patent GB-1192967-A (GB)
Title: Efficient Incandescent Light Source
Inventor: JOHNSON PETER DEXTER
IPC: H01K1/50
Filed: 1967-08-16
Abstract: 1,192,967. Electric incandescent lamps. GENERAL ELECTRIC CO. 16 Aug., 1967 [21 Sept., 1966], No. 37804/67. Heading H1F. The light output of an electric incandescent lamp is increased by placing within the lamp envelope a quantity of mercury, which completely vaporizes when the filament is energized and produces a pressure in the range 2 to 20 atmospheres, and a quantity of at least one metallic halide, other than a fluoride, part at least of which vaporizes to produce a partial pressure in the range 0À1 to 500 mm. of mercury. Thermal excitation of the halide causes the emission of the characteristic line spectrum of the metal which is subjected to " linebroadening " by the presence of the high pressure mercury vapour. The halide is preferably the iodide, but may also be the chloride or bromide, of an alkali metal, e.g. Li, Na, K, Rb, a group III metal, e.g. Sc, Y, Ga, In, Tl, or a lanthanide, e.g. Ce, Er, Gd, Ho, Nd, Pr, Yb. The envelope is constructed in such a manner that the inner surface is a substantially uniform distance from the outer surface of the filament and is sufficiently close to the filament to maintain its coldest portion at a temperature in the range 350‹ to 1200<SP>‹</SP> C. This prevents condensation of the halide on the wall of the envelope. A heat shield in the form of a layer of silver, platinum or zirconium oxide paint may be deposited on the outer surface of the envelope in the region of the pinch seals. Blackening of the inner surface is prevented by the presence of the halogen as a constituent of the halide, but additional elemental halogen up to a partial pressure of 10 mm. of mercury may be employed if required. The filament may be of single coil or coiled coil form, and suitable dimensions for both types are given. The envelope may be made of fused silica, quartz or high density alumina.
Patent GB-633633-A (GB)
Title: Improvements relating to loom swells
IPC: D03D49/52
Filed: 1946-12-28
Abstract: 633,633. Checking shuttles. PHILLIP, F. Dec. 28, 1946, No. 37933. [Class 142 (iii)] A loom swell has two or more springs distributed along its length and compressed between the swell and a buttress member extending behind the swell. The swell B is mounted on screwed rods E and is pressed forward by springs C through a slot in the shuttle box wall. The springs are mounted in recesses B<SP>3</SP>, D<SP>2</SP> in the back of the swell and in the buttress member D. By adjustment of nuts B<SP>2</SP>, either end of the swell may be made to protrude further into the box. By making the recesses of varying depth and by moving the springs to different positions along the swell the swell pressure may be adjusted. The face of the swell may be covered with a strip of leather or other cushioning material.
Patent GB-968952-A (GB)
Title: Improvements in stringers for sliding clasp fasteners
Inventor: JONES ARTHUR LLEWELYN
IPC: A44B19/14
Filed: 1962-10-08
Abstract: 968,952. Sliding clasp fasteners. RONDO PLASTICS PTY Ltd. Oct. 8, 1962, No. 37941/62. Heading E2S. A pair of stringers comprise strips of thermoplastic tape 7, 8, transverse interlocking elements 11 moulded integrally with the tape and inextensible reinforcing cord 18 embedded in the tape and extending beneath the elements. The edges 7a, 8a of the tapes are shorter in length than the edges 7b, 8b, this shape being brought about by extending the stringers over a conical surface. A textile ribbon in compacted form may be secured to the tape.
Patent GB-890557-A (GB)
Title: Using a high purity compound to provide a vulcanizate
IPC: C08F10/00
Filed: 1960-11-08
Abstract: Hydrocarbon soluble polymers with a Mooney viscosity (8 minutes at 212 DEG F.) between 130 and 200 are prepared by a process which comprises polymerizing, in the presence of a Friedel-Crafts catalyst at 0 DEG  to -164 DEG C., 70 to 99,5 parts by weight of an isoolefin having a purity between 99,2 and 99,9+ per cent with 0,5 to 30 parts by weight of a multiolefin in the presence of 0,1 to 0,8 parts by weight of a divinyl aromatic compound having a purity above 50%, all parts being based on pure reactants.  The preferred monomers are isobutylene and isoprene. The preferred aromatic compound is divinyl benzene, though divinyl xylene, divinyl toluene, divinyl pyridine, diisopropenyl benzene or divinyl naphthalene may also be used.  The catalyst may be aluminium chloride, aluminium bromide, titanium tetrachloride or boron trifluoride.  The polymerization may be effected batchwise or continuously in the presence of an inert diluent or refrigerant-diluent, e.g. hydrocarbons, halogenated hydrocarbons and carbon dioxide.  The products may be compounded with silica, carbon black and antioxidants, e.g. 2,21-methylene (4-methyl-6-tertiary butyl) phenol, and heat treated with polymethylol phenol resins, by static or dynamic, e.g. hot milling, methods.  The heat treated products may be compounded with sulphur and conventional vulcanizing ingredients, p-dinitroso benzene or p-quinone dioxime and vulcanized.
Patent GB-385637-A (GB)
IPC: E04F13/08
Abstract: 385,637. Mosaics ; facing slabs. SMILES, R. W., 13, Gibson Street, Newcastle-on-Tyne. June 30, 1931, No. 18909. [Classes 20 (iv) and 87 (i).] Mosaic panels, letters, or other products are moulded with a Portland cement backing which may be plain or reinforced with metal and consists of a thin layer C of neat cement and a thicker layer D of cement and aggregate. Holes for fixing screws may be provided with wooden bushes E, and the spaces F and also those occurring at the bevelled edges of adjacent panels are afterwards filled with cement which is faced with tesserµ to make the pattern continuous.
Patent GB-363140-A (GB)
Title: Improvements in and relating to horizontally sliding doors
IPC: E05D15/56
Filed: 1930-12-22
Abstract: 363,140. Rectilinear - motion bearings. DEHN, F. B., 103, Kingsway, London.- (Camel Co. ; 332, South Michigan Avenue, Chicago, U.S.A.) Dec. 22, 1930, No. 38578. [Class 12 (i).] A horizontally - sliding door 1, Figs. 1 and 5, which normally frictionally engages with a track 3, is adapted to be lifted, and thereby supported on balls 9, by the tilting of the eccentrically pivoted ball retainer 4. The tilting is effected by a pivoted lever 12, lugs 13 on which engage with and depress the retainer which pivots about pins 5 mounted in brackets 6 on the door. The retainer comprises an angle-bar 7 and a profile plate 8, these being braced by a member 7a. Suitably spaced apart and disposed between the members 7, 8, are arranged auxiliary retainers 10 each carry two bearing balls 9. A neck 11 on each auxiliary retainer projects through the throat of the retainer 4.
Patent GB-1172536-A (GB)
Title: Improvements in Electrical Protective Relays
Inventor: PADDISON ERIC
IPC: H02H3/38
Filed: 1966-08-31
Abstract: 1,172,536. Protective arrangements. ENGLISH ELECTRIC CO. Ltd. 30 Aug., 1967 [31 Aug., 1966], No. 38791/66. Heading H2K. [Also in Division H3] A distance protective arrangement comprises input means 13, 14 providing two A.C. signals dependent on vectorial quantities (e.g. V-IX and IR) of the protected system, and a comparator 18A for comparing the signals and producing an output when the signals have a predetermined phase sequence, have the same sense and are coincident in time. The output from the comparator is integrated in an integrator 19A which provides an output when the output from the comparator has a predetermined duration, so avoiding incorrect operation due to spurious short duration signals. The quantities are chosen so that they are in phase when a fault occurs at the boundary of a protected zone, and are determined by a replica reactance X and a replica resistance R in the means 13 and 14. A signal inverter 17 with a further comparator 18B and integrator 19B provide an output on the half cycles to which the comparator 18A does not respond. Since the outputs from the integrators operate switches 20A, 20B connected in series, incorrect operation due to D.C. offset is prevented. The comparator, Fig. 4, includes a thyristor TH1 which conducts when a signal from a square wave amplifier 16 causes a transistor TR1 to conduct. When a signal is received from a square wave amplifier 15, a transistor TR3 conducts and through a transistor TR5 renders a transistor TR6 conductive to provide an output signal to the integrator 19. At the same time a transistor TR4 renders a transistor TR 2 conductive to clamp the thyristor gate at a negative potential. When the signal from 16 ceases the transistor TR1 and thyristor TH1 cease to conduct terminating the output signal. If the phase sequence of the signals from 15 and 16 is not correct, then transistor TR2 conducts before the transistor TR1 can conduct so that no output is obtained from the comparator.
Patent GB-974078-A (GB)
Title: Method for controlling speed and contrast of photographic emulsions
IPC: G03C7/30
Filed: 1960-11-11
Abstract: 974, 078. Photographic colour material. KODAK Ltd. Nov. 11, 1960 [Nov. 12, 1959], No. 38918/60. Heading G2C. Photographic colour material comprising a gelatin layer containing dispersed packets of gelatin reacted with a water-soluble salt of a styrene/ alpha, #-unsaturated carboxylic acid interpolymer, which packets comprise a red-sensitized silver chloride emulsion and a cyan colour coupler, has its speed and contrast increased by incorporating in the gelatin layer an unsensitized silver chloride emulsion of sufficiently low speed to give no visible image therein when a visible image is produced in the red-sensitized emulsion. The gelatin layer also may contain packets of green-sensitized silver chloride emulsion containing a magenta colour coupler, and packets of blue-sensitive silver chlorobromide emulsion containing a yellow colour coupler. The unsensitized low-speed emulsion may be in the gelatin matrix, in the red-sensitive packets or in one of the other packets such as the bluesensitive packets. In the examples, the cyan coupler is first dispersed in aqueous phthalic anhydride gelatin with ethyl acetate as auxiliary solvent, and the dispersion is mixed with more phthalic anhydride gelatin, bone gelatin and a red-sensitized chloride emulsion. Packets are formed by adding an aqueous solution of the sodium salt of styrene/ maleic anhydride interpolymer. The packets are mixed with di-n-butyl phthalete oil former and diluted with gelatin, and an unsensitized silver chloride emulsion. Packets are formed by adding sions are prepared in a similar way. Specifications 524,555, 541,589, 581,772 and 711,488 are referred to.