baber/WOPTO huggingface dataset:
Patent GB-1221176-A (GB)
Title: Improvements in and relating to metal clad gas blast circuit-breakers which are exclusively adapted to interrupt a circuit
Inventor: BOERSMA RINTJE
IPC: H01H33/83
Filed: 1969-06-19
Abstract: 1,221,176. Gas blast switches. " COQ " N.V. 19 June, 1969 [20 June, 1968], No. 31097/69. Heading HlN. In a metal-clad gas blast circuit breaker of the kind in which separable contacts 4-6 are located in a high-pressure gas-filled chamber 17 and when open permit a flow of extinguishing gas through the contacts into a lower pressure gas-filled chamber 20 which is vented to atmosphere by a pressure relief valve 26, the valve 26 is prevented from opening should the pressures in the high pressure chamber or the low pressure chamber fall below minimum values dependent upon the necessary insulation. The valve 26 normally allows gas to escape from chamber 20, if the pressure exceeds a value set by a spring 25, by a conduit 24 and silencer 28. If the pressure in chamber 20 falls below a value set by a spring 30 the latter pushes up a valve 29 to close conduit 24 and prevent any further leakage through relief valve 26. If the high pressure falls below a value set by spring 43, valve 37 changes over and a piston 31 is driven up to again close valve 29. Metal cooling rings are contained in chambers 9, 10 between the nozzle contacts 4, 5 and low pressure chamber 20.
Patent GB-717655-A (GB)
Title: Improvement in electromagnetic relay
IPC: H01H51/08
Filed: 1952-12-08
Abstract: 717,655. Electromagnetic relays. BORG CORPORATION. W. N. Dec. 8, 1952 [Dec. 28. 1951], No. 31117/52. Class 38(5) An electromagneic relay comprises an actuating solenoid 1 which, when energized, causes two magnetic cores, 3, 3 to move together to move the bars 7, 8; the bar 7 being connected to the left hand core 3 whilst the bar 8 is connected to the right hand core 3; so that by means of the elongated loops 21, 22 on the bars and the pins 23 on a contact member 24, the contact member is caused to move about a pivot 25 to co-operate with fixed contacts 35, 35a. The end pieces 30, 45 of the enclosure are of a transparent substance so that the moving parts of the relay are visible without disassembly of the relay. The relay is returned to its original position when de-energized by a spring 4 between the cores 3. In other embodiments two solenoid coils may be used between which, are placed discs of magnetic material, the cores tending to separate when the solenoids are energized, the return spring in this case tending to move the cores together; further the contact member may be in the form of a toggle.
Patent GB-665364-A (GB)
Title: Improvements in or relating to circuit-arrangements for deriving voltages exhibitinga relative phase difference from a control voltage of varying frequency
IPC: H03C1/60
Filed: 1948-12-02
Abstract: 665,364. Phase changing networks. PHILIPS ELECTRICAL, Ltd. Dec. 2, 1948 [Dec. 5, 1947], No. 31236/48. Class 40 (viii). [Also in Group XL (c)] Two voltages exhibiting a substantially frequency-independent relative phase difference, e.g. 90, are derived from a control, e.g. modulating voltage, composed of or varying within a range of frequencies, by networks producing a phase-shift # linearly related to the logarithm of the control frequency and having a transmission impedance constant over the frequency range so that, when the inputs of the networks are in series, the relative amplitudes of the outputs due to the input frequencies are unaffected by the networks. The networks are constituted by bridged T-networks T, T1, the series impedances being formed by centretapped inductances L, L1 shunted by condensers C, C1 and resistors R, R1, and the shunt impedances by resistors of value R/8, R1/8. The resonance frequencies of the two networks are made unequal but the quantities <SP>I</SP>/ R #<SP>L</SP>/ C  equal. Modulation is applied to the networks in series as shown and their outputs in phase quadrature applied to modulators 17, 18 to which carrier waves in phase quadrature from an oscillator 19, produced by a phase-shift network 20, are also applied, so that across the outputs of the modulators connected in series a single-band modulated carrier is derived.
Patent GB-227817-A (GB)
Title: Improvements in combination garments
IPC: A41B9/08
Filed: 1924-12-30
Abstract: 227,817. Hatch, N. Jan. 18, 1924, [Convention date]. Undervests; combinations. -In the manufacture of the upper part of undergarments more particularly of the combination type and made from tubular fabric, the crossedover flaps 38, 40 instead of being cut out integrally are made as separate triangularshaped pieces and are attached near the shoulder line. As shown, a piece of tubular fabric has the central lower part cut away and seamed to form the crutch and leg parts, and the upper part cut to form the shoulder part, the neck opening 46, and armholes 48, 50. The flaps 38, 40 are preferably waste pieces from cutting the sleeves and legs, and the shoulder portions of the main fabric to which they are attached are cut substantially straight, thereby saving the waste material which results from cutting the flaps integrally with the remainder of the garment.
Patent GB-638228-A (GB)
Title: Automatic and gradually folding linkwork
IPC: E06B3/48
Filed: 1947-11-26
Abstract: 638,228. Doors ; windows ; shutters. ALTUBE, J. M. C. Nov. 26, 1947, No. 31328. [Class 20 (iii)] [Also in Group XXIV] A folding and extensible linkwork adaptable for folding doors, windows, shutters, &c., comprises a plurality of links A, B, Fig. 3, pivotally connected end to end at C, D so that they are capable of being folded up one on the other or extended end to end in a suitable guideway along a line X, X<SP>1</SP>. Each link A is provided with a cam surface E which is adapted to engage successively with a fixed abutment R to initiate the folding movement of each pair of the links A, B on the extended portion being subjected to an actuating force P along the direction X, X<SP>1</SP> of the guideway. In a more practical arrangement shown in Fig. 7 the main links 1 are extended beyond the connection of the joining links 2 so that in the extended position the links 1 abut each other and circular runners 6 secured to the links 1 slide in a guide channel 5. Two cam surfaces 7 and 8 are provided on each link 1, all the surfaces 7 cooperating with a fixed abutment 9 to initiate the folding movement under the action of a force P whilst the surfaces 8 co-operate with separate abutments 10 to further control the folding operation until part-circular projections 13 on the runners 6 engage with projections 14 to definitely locate and position the ends of the links 1 in the folded position. The unfolding and extension of the linkwork is effected by the application of a force in a reverse direction to the force P. In the arrangement in Fig. 9 rack teeth 17 are provided along the links 1 so that a folding rack is obtained which is actuated by a pinion 18 to extend or fold up. The links 1 are also each provided with a lug 19 and a notch 20 at the ends which inter-engage to couple the links 1 together when in the extended position.
Patent GB-740762-A (GB)
Title: Improvements relating to thrust bearings
Inventor: GREY JOHN CONSTANTINE
IPC: F01D25/16
Filed: 1952-12-10
Abstract: 740,762. Thrust bearings. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. Dec. 8, 1953 [Dec. 10, 1952], No. 31340/52. Class 12 (1). A thrust bearing comprises a bearing plate 15, loosely mounted on a shaft 12 and engaging at one end a bearing surface 13 on a housing 14, and a key 16 disposed in a slot 18 in the other end of the plate 15 and passing through an aperture 17 extending transversely through the shaft. The key 16 has a protuberance 19 at its mid length permitting limited universal movement of the shaft with respect to the housing. In a modification a stud 24 screwed to the end of a shaft 20 has a transverse aperture 25 in which is disposed a key 29 whose ends engage slots 28 in a bearing plate 26. The member 26 is seated on an annular protuberance 23 on the member 20 and a protuberance 30 is also provided on the key 29 for self-aligning purposes. The stud 24 is locked to the shaft by wire rods 31.
Patent GB-1473962-A (GB)
Title: Rotary duplicator provided with a device for applying moistening fluid to copy sheets
IPC: B41L23/12
Filed: 1975-07-28
Abstract: 1473962 Moistening in rotary duplicators G RITZERFELD 28 July 1975 [12 Aug 1974] 31444/75 Heading B6C A moistening felt 1 for a rotary duplicator is clamped between the limbs of a clamp 2 and separating pins of synthetic material 6 are placed in holes 4 to restrict compression of the felt 1.
Patent GB-1518504-A (GB)
Title: Task timing equipment
IPC: B60R16/03
Filed: 1975-10-10
Abstract: 1518504 Electronic stop-clock NATIONAL RESEARCH DEVELOPMENT CORP 10 Oct 1975 [16 July 1974] 31464/74 Heading G3T [Also in Division G4] For timing visual tasks a pseudorandom sequence of alphanumeric digits at a constant rate is presented to the viewer who records the digits at beginning and end of the task enabling the time taken to be deduced from the known sequence. In timing the response of a car driver the digits are presented by a display on the car bonnet, Fig. 2 (not shown); the driver reads out the digits until the start of the task and then resumes at the end, this being recorded by a tape recorder and the missing digits determining the time taken. The timing apparatus, Fig. 1, comprises an oscilator 1, a divider giving various outputs allowing the display rate to be changed and a shift register 4 with variable feedback logic 5 for selecting the sequence. At each step of the shift register 4 a comparator 6 holds open a gate 9 to advance a counter 11 until it is in the same state as the register. The pulses passed by gate 9 at each step are also counted by a counter 12 which operates a display 14. A further counter 7 counts the number of times the gate 9 is opened and indicates the number of sequences which have been displayed.
Patent GB-504339-A (GB)
Title: Pencil sharpening device adapted to be secured on the hand
IPC: B43L23/00
Filed: 1938-10-31
Abstract: 504,339. Pencil sharpeners. DOBKOWITZ, B. K. Oct. 31, 1938, No. 31472. Convention date, May 14. [Class 146 (iii)] A pencil - sharpening device comprises a penci point sharpener and a pencil point wiper se cured on a support which is secured on a hand, the edge of the wiper dis posed nearest the sharp ener constituting a re taining member for any graphite freed from the sharpener. A chamois &c. supporting band A is secured on the back of the hand by elastic strips 4, 8, and a pencil point sharpener C comprising a frame 11 open at the top and one side houses sheets 16 of sandpaper and is secured to the band by stitching. A rim 17 extends around three sides of the frame 11, and forms with a flange 15, projecting from the sides of the frame and spaced from the rim, a channel for the collection of lead dust. A wool pencil point wiper D is also secured to the band A, and is arranged adjacent the frame 11, but allows the used pieces of sandpaper to be withdrawn.
Patent GB-834095-A (GB)
Title: Improved composition for use in shell moulding manufacture
IPC: B22C1/22
Filed: 1957-10-09
Abstract: Sand is coated or semi-coated with 0.75 to 10% by weight of a phenol-formaldehyde resin binder, 0.4 to 1.5% by weight of polymerized furfuryl alcohol containing up to 6% by weight of monomeric furfuryl alcohol and having a viscosity of between 500 and 10,000 centipoises at 25 DEG  C., a hardener catalyst for the furfuryl alcohol, and at least 0.4% by weight of a green strength additive.  Specified hardener catalysts are phthalic anhydride, ferric chloride, zinc chloride, sulphuric, hydrochloric and oxalic acid and maleic anhydride.  Specified green strength additives are dimethyl, diethyl, dibutyl and diamyl phthalate, tricresyl phosphate and a mixture of a non-curing phenolic resin and a linseed oil fraction.  In an example, polymerized furfuryl alcohol is mulled with sand to form a uniform mixture, a solution of phthalic anhydride in dibutyl phthalate and then a phenolic resin are added, mulling being continued after each addition to form a semi-coated sand.  The compositions may also contain hard wax, e.g. carnauba wax, candelilla wax, polyethylene having a molecular weight of 2000 to 6000 and lignin resins.ALSO:A shell moulding composition comprises sand, 0.75 to 10% by weight of a phenol-formaldehyde resin binder, 0.4 to 1.5% by weight of polymerized furfuryl alcohol containing up to 6% by weight of monomeric furfuryl alcohol and having a viscosity of between 500 and 10,000 centipoises at 25 DEG  C., a hardener catalyst for the furfuryl alcohol, and at least 0.4% by weight of a green strength additive.  Specified hardener catalysts are phthalic anhydride, ferric chloride, zinc chloride, sulphuric, hydrochloric and oxalic acid and maleic anhydride.  Specified green strength additives are dimethyl, diethyl, dibutyl and diamyl phthalate, tricresyl phosphate and a mixture of a non-curing phenolic resin and a linseed oil fraction.  The polymeric furfuryl alcohol is made by polymerizing furfuryl alcohol with heat and/or phosphoric acid as catalyst.  In an example, polymerized furfuryl alcohol is mulled with sand to form a uniform mixture, a solution of phthalic anhydride in dibutylphthalate and then a phenolic resin are added, mulling being continued after each addition, the product being a semi-coated sand. The compositions may also contain hard wax, e.g. carnauba wax, candelilla wax or polyethylene having a molecular weight of 2000 to 6000 and lignin resins.
Patent GB-189146-A (GB)
Title: Plastic composition
IPC: C08L49/00
Filed: 1922-11-18
Abstract: Cuprene is obtained by polymerizing acetylene in presence of copper or by means of a dark electrical discharge.
Patent GB-303827-A (GB)
Title: Improved manufacture of accelerators for rubber vulcanization
IPC: C08K5/00
Filed: 1928-10-31
Abstract: 303,827. Goodyear Tire & Rubber Co., (Assignees of Teppema, J.). Jan. 10, 1928, [Convention date]. Reaction products of nitroso compounds with mercapto thiazoles are prepared by heating the materials together to the melting point. Reaction products of nitroso-dimethylaniline and of nitroso- #-naphthol with 2-mercaptobenzothiazole are specified. They are of use as vulcanizing accelerators.
Patent GB-1044386-A (GB)
Title: Method of manufacturing flat tubular viscose fibres
IPC: D21H13/08
Filed: 1963-08-12
Abstract: Paper is made from flat, tubular viscose fibres having a tubular flattened part extending over at least 60% of their length the cross-section of the long axis of the fibre being at least 5 times, preferably at least 10 times, that of the short axis.  Such fibres are made by spinning an unripe viscose having a Hottenroth value of more than 16 and containing 2 to 50% (based on the cellulose in the viscose) of an organic water-swelling high molecular weight substance and 2-4% (based on the viscose) of anhydrous alkali cabonate into a coagulating bath containing sulphuric acid and at least one metallic sulphate.  The unripe viscose may be mixed with a conventional viscose.  Specified organic water-swelling high molecular weight substances include polyvinyl alcohol and its derivatives, hemicellulose, methyl cellulose, ethyl cellulose, cyanoethyl cellulose, carboxymethyl cellulose, hydroxy ethyl cellulose and other water-swellable, so-called alkalisoluble cellulose derivatives, which are preferably present in the fibre in a proportion of 5-30%. Preferably the Hottenroth value of the viscose is about 20.  A coagulating bath consisting of sulphuric acid, sodium sulphate and zinc sulphate may be used, but zinc sulphate is not essential and sodium sulphate may be replaced by a mixture of magnesium and aluminium sulphates.  In Examples, the coagulating bath used is at a temperature of 60 DEG C and consists of 12% by weight sulphuric acid, 2.5% anhydrous zinc sulphate and 25% anhydrous sodium sulphate.  The filaments are then stretched to a draw ratio of 1.4 or 1.5 in a hot water bath or 1% sulphuric acid bath at 50 DEG C, wound up and may be cut to short fibres, which are useful in paper-making.  In Examples the fibres, of 0.7-8 denier, are cut to a length of 4mm., dispersed in water and paper made according to the TAPPI process, without adding any other binder, by manual working, the wet paper being pressed and dried by a hot press at a pressure of 0.5 kg/cm2 and at 100/C.  In an example, such a paper had a weight of 52.45 g/sq. m. thickness 0.08 mm., breaking length 38 km. and tear factor 190.  If desired, the hollow fibres may be mixed with 20-30% of solid fibres.
Patent GB-491232-A (GB)
Title: Improvements in or relating to a mechanical stoker, for continuous and automatic action
IPC: F23K3/06
Filed: 1936-11-19
Abstract: 491,232. Delivering material from hoppers. DUMOULIN, J. Nov. 19, 1936, No. 31745. Void. Convention date, Nov. 29, 1935. [Class 78 (i)] The Specification comprises stoking - apparatus for furnaces &c. embodying a feed regulating drum 4 with peripheral recesses 5 rotated by the weight of fuel dropping thereinto from a hopper 2, the rate of rotation being regulated by a pendulum- or otherwise - controlled escapement mechanism on the end of the drum spindle. The fuel falls from the pockets 5, through a tuyere 7 into the combustion chamber.
Patent GB-286188-A (GB)
Title: Improvements in combustion chamber walls of furnaces
IPC: F23M5/08
Filed: 1927-11-25
Abstract: 286,188. Babcock & Wilcox, Ltd., (Deutsche Babcock & Wilcox Dampfkesselwerke Akt.-Ges.). Nov. 25, 1927. Walls.-The brickwork forming the walls of a powdered fuel furnace is supported on spaced flanges C of water-tubes B, spaces D being provided between the sections of brickwork and the flanges to allow for expansion. Cooling air circulates in the space E between the brickwork and outer wall F.
Patent GB-1465734-A (GB)
Title: Torque measuring apparatus
IPC: G01L3/10
Filed: 1974-07-18
Abstract: 1465734 Measuring torque electrically GENERAL ELECTRIC CO 18 July 1974 [3 Aug 1973] 31858/74 Heading G1N The torque transmitted by a shaft 10 Fig. 1 is determined by measuring the angular displacement between a first pair of teeth 12 and a second pair of teeth 14 attached to an axially displaced location on the shaft 10. As the shaft rotates each tooth 12, 14 induces a pulse in a coil 22 of a shielded pick-up head 20. The pulse train is fed through a filter 26, 28 to a network 30 which converts it to a synchronous square pulse train whose trailing edges trigger a bi-stable multi-vibrator 42 and produce a variable ratio mark/space pulse train whose average value, determined by D.C. filter 62, is proportional to the twist of the shaft 10, and therefore to the shaft torque. The circuit voltage V o  is automatically varied with ambient temperature as measured by a thermocouple to compensate for changes in shaft twist with temperature.
Patent GB-1456088-A (GB)
Title: Halogen-containing benzisoxazolo-thiono-thiol-prosphoric - phosphonic- acid esters and ester-amides process for their preparation and their use as insecticides and acaraicides
IPC: A01N57/24
Filed: 1974-07-18
Abstract: 1456088 Benzisoxazolo - thiophosphate and -thiophosphonate esters BAYER AG 18 July 1974 [19 July 1973] 31883/74 Headings C2P and C2C The invention comprises compounds of the general formula wherein R is C 1 -C 6  alkyl, R 1  is alkyl, alkoxy, alkylmercapto or alkylamino, each with 1 to 6 carbon atoms, or phenyl and Hal is halogen, e.g. Cl, Br or I. They are prepared by reacting a compound in the presence of an acid acceptor or in the form of an alkali metal-, alkaline earth metal- or ammonium salt with a halide of the formula where Hal 1  is halogen, preferably Cl, the reaction being preferably carried out in a solvent or diluent. The products have insecticidal, acaricidal and ectoparasiticidal properties and may be used as active ingredients in conventional pesticidal compositions. The compound of Formula (II) in which Hal is Br is obtained by adding thionyl chloride dropwise to the compound toluene and ethyl acetate and the reaction mixture brought to 25 C. under reduced pressure. Triethylamine is then added whilst stirring and cooling with solid carbon dioxide/ acetone and the solution then poured into water, concentrated NaOH solution added until alkaline, the mixture acidified and the precipitate filtered off to give the desired product. The product (II) in which Hal is Cl is obtained similarly.
Patent GB-1400762-A (GB)
Title: Semiconductor rod electrical heating systems for use in semi conductor rod manufacturing processes
IPC: G05F1/455
Filed: 1972-07-07
Abstract: 1400762 Automatic current control SIEMENS A G 7 July 1972 [7 July 1971] 31909/72 Heading G3R [Also in Division H3] The heating current to a semi-conductor rod is regulated by varying the fixing angle of an electronic switch, between the rod and a current source, according to the difference between a reference signal and a D.C. signal produced from the measured heating current via a rectifier and smoothing circuit. The current is thus regulated despite variations in the resistance of the rod as it is manufactured. As shown, switch 3 e.g. a thyratron, switching transistor, thyristor or triac controls the current from a single phase (or three phase) supply 2 to rod 1, the current being sensed by current transformer 4, rectified by bridge 5 and applied to lowpass network 7. The output of this network, a signal G proportional to the heating current r.m.s. or average value, is compared with a reference G o  by differential D.C. amplifier 10, to control the firing angle of switch 3, using a pulse generator 11 (see Division H3). The transformer 4 may be replaced by a shunt and rectifier bridge 5 replaced by a half-wave rectifier.
Patent GB-837336-A (GB)
Title: Improvements in or relating to electric lighting fittings
Inventor: SURMAN RAYMOND EDWIN
IPC: F21V17/00
Filed: 1957-10-14
Abstract: 837,336. Electric light fittings. GENERAL ELECTRIC CO. Ltd. Oct. 13, 1958 [Oct. 14, 1957], No. 32073/57. Classes 75(2) and 75(4) In an electric lighting fitting incorporating a hollow body member arranged to house one or more lamps, especially for mounting on a bulkhead or similar support, the lampholder(s) is mounted on a reflector and the body member has retaining means to hold this in place by the spring action of the reflector or the retaining means. In the form shown, the fitting comprises a box 1 with a light transmissive cover 26 and a reflector 3 of mild steel or aluminium carrying a lamp-holder 4. A metal strip 7 is provided at each end of the box and has its end 9 turned inwards at right angles and terminating in three lugs 10, 11, the lug 11 being bent upwards at an angle to the plane! of the strip and the tip turned downwards at 90 degrees. The reflector 3 has a flat base 15 with upturned edges 17, 18 having outwardly turned extremities 13 which engage between the lugs 10, 11 The lampholder is carried on one of the upturned edges 18. The sides of the reflector may also be turned upwards. The cover 26 is held in place against a rubber bead 27 by screws 28 and may be ribbed or fluted on the inner surface.