baber/WOPTO huggingface dataset:
Patent GB-1523909-A (GB)
Title: Electromagnetic transducer
IPC: H03K17/64
Filed: 1975-10-07
Abstract: 1523909 Sound producing instruments GENERAL SIGNAL CORP 7 Oct 1975 [24 Oct 1974] 41083/75 Heading G5J The energizing coils of a diaphragm vibrator or the like form the tuning and feedback coils of a transistor oscillator as in Fig. 3.
Patent GB-1098907-A (GB)
Title: Device for the handling of rigid loads
IPC: B64D9/00
Filed: 1966-09-14
Abstract: 1,098,907. Wheeled cradles. SUD-AVIATION SOCIETE NATIONALE DE CONSTRUCTIONS AERONAUTIQUES. Sept. 14, 1966 [Oct. 6, 1965], No. 41128/66. Heading B8H. A long load 21, Fig. 4, is handled by attaching to each end, with cables 23 and turnbuckles 23a, wheeled cradles 22 provided with vertically slidable load.bearing flanges 10a. The latter are moved up and down vertical guides by a manually-operated ram 13, Fig. 3. The wheels 2 are held parallel to one another by a crosslink and may either be steered by a handle 8 or locked perpendicular to the lifting flange. Abutments 18 engage the ends of the load and are universally mounted to accommodate irregular loads.
Patent GB-916742-A (GB)
Title: Improvements in or relating to releasable jointing arrangements for pipes
IPC: F27D99/00
Filed: 1961-11-16
Abstract: 916,742. Releasable pipe joints. GESELLSCHAFT DER LUDW VON ROLL'SCHEN EISENWERKE A.G. Nov. 16, 1961 [Nov. 16, 1960], No. 41142/61. Class 99(1). A jointing arrangement for the spaced ends of pipes 1, 2 comprises an annular packing element 11 pivotally mounted about a horizontal axis at 21 to the end of the pipe 2 and connected thereto by bellows 22 and a second sleeve-like packing element 10 pivotally mounted about a vertical axis at 12 to a sleeve 14 axially displaceable on the end of the pipe 1, the element 10 being connected to the sleeve 14 by bellows 15 and the pivotal axes of the elements 10, 11 and the common axis A-A of the pipes 1, 2 when aligned being approximately mutually perpendicular. The arrangement is such that in the event of lateral displacement of the end of pipe 2 from the axis A-A, when the element 10 is displaced towards the element 11, the positions of the two elements are adjusted to one another to provide flush sealing surfaces within the range of pivoting of the elements 10, 11. As described the pipes convey flue gases from an electric furnace 9, the pipe 2 being rigidly connected to the furnace roof 8 and is displaceable therewith transversely to the axis A-A, the originally aligned positions of the pipes ends 1, 2 not being re-established with great accuracy after such displacement. The elements 10, 11 are hollow and the pipe ends double-walled to allow cooling of the joint by circulation of water. Movement of the sleeve 14 is effected by a fluid operated piston and cylinder 19 and levers 17. Instead of the arrangement shown, the sleeve 14 and element 10 may be mounted on the movable pipe end 2 and the packing element 11 on the stationary pipe end 1. Bellows may also be provided between the sleeve 14 and pipe end 1.
Patent GB-1285966-A (GB)
Title: Rotary electrical apparatus
Inventor: LOUDON DONALD CURTISS
IPC: H02K1/27
Filed: 1969-08-19
Abstract: 1285966 Machines with permanent magnets BENDIX CORP 19 Aug 1969 [16 Sept 1968] 41295/69 Heading H2A The rotor of a generator or motor comprises a magnetic ring 27 secured to the shaft 13, an annular array 35 of permanent magnets disposed around the magnetic ring 27, and non- magnetic annuli 30 fixed to the shaft at each end of the array of permanent magnets, the magnets being held in position by cured rigid adhesive 36, 37, 39. The magnetic ring 27 is supported on shoulders 29 of the stainless steel shaft 13 and is brazed (32, 34) to the shaft and the non-magnetic annuli 30. The magnets may each have only one pair of poles, as in Fig. 5, and a non-magnetic retaining sleeve 42 may be heat-shrunk around the rotor. Alternatively (Fig. 6, not shown) each permanent magnet may provide a number of circumferentiallyspaced pole pairs, and the retaining sleeve may be formed with alternate magnetic (51) and non- magnetic (50) portions, the magnetic portions constituting pole pieces. The stator of the generator shown has alternate wound and unwound poles 17, 19, with six coils 16 connected together in pairs to provide three separate outputs.
Patent GB-1217874-A (GB)
Title: Fluid filters
Inventor: MADERN JEAN-PIERRE
IPC: B01D29/15
Filed: 1968-08-30
Abstract: 1,217,874. Filter element support. J. P. MADERN. 30 Aug., 1968 [13 Sept., 1967; 1 March, 1968], No. 41407/68. Heading B1D. A filter sheath 1 is supported about cylindrical members 2, 4 by means 6; the sheath is supported for inward flow filtration by flexible plates 5 supported in radial grooves 2a, 4a in members 2, 4. As described, pressure fluctuations cause shaking of plates 5 and hence cleaning of filter sheath 1. One or more intermediate cylindrical members 3 are similar to member 4 (shown in Fig. 6) except that the slots (3a), analogous to 4a, extend radially all the way to the outward periphery of the cylinder and are not blind. Members 3-5 may be of PVC, sheath 1 of polypropylene, and straps 6 of p.t.f.e.
Patent GB-904749-A (GB)
Title: Improvements in or relating to voice frequency transmission systems
IPC: H04Q1/446
Filed: 1958-12-23
Abstract: 904,749. Automatic-exchange systems. WESTERN ELECTRIC CO. Inc. Dec. 23, 1958 [Dec. 24, 1957], No. 41432/58. Class 40 (4). In a voice-frequency signalling system a tandem exchange includes a transistor, having its base coupled to a source of speech currents and signalling current and its emitter and collector to an outgoing trunk circuit, which normally transmits voice-frequency currents from the source to the outgoing trunk circuit, but on the detection of signalling current bias is applied to the emitter to cut-off the transistor and block forward transmission. In the Figure, in which an " X " indicates a make contact and a vertical bar a break contact, the source 10 represents the receive pair of an incoming four-wire trunk circuit, the received currents being applied by transformer 11 to the voice amplifier VA, the output of which is fed via transformer 31 to the load 35 which may be an outgoing trunk circuit. Incoming currents are also applied via the secondary winding 14 and transistor amplifier 40 to a signal and guard frequency detector 45. Whenever the guard, other than signalling, voltage predominates, the D.C. output of detector 45 cuts-off the D.C. transistor amplifier 50; but when the signalling current predominates, the amplifier 50 conducts and saturation collector current flows, thus creating an emitter-to-base bias on transistor 60 which, except for the presence of capacitor 53, would cause transistor 60 to conduct. In the absence of signalling current capacitor 53 is rapidly charged via diode 54, and transistor 60 is cut-off. When transistor 50 conducts, capacitor 53 discharges through diode 55 and the emitter-collector path of transistor 50, and transistor 60 cannot conduct until the discharging current has decayed to the extent at which it produces a voltage across resistors 52 and 57 which is less than that produced across resistors 49 and 51 in the emitter circuit of transistor 50. Transistor 60 thus conducts after a delay of about 36 ms. and relays 65 and 70 operate in - succession. Relay 70 introduces the band-elimination filter 18, 19, 20 to stop the signalling current from reaching the amplifier, and short-circuits winding 14 so that the input to the amplifier 40 is then predominantly signalling current via winding 13 and transformer 16. Relay 70 also repeats the signal over lead 67. To prevent the signalling current reaching the outgoing trunk circuit 35 prior to the operation of relay 70, the potential drop across resistor 51, which develops as soon as transistor 50 conducts, is applied as back bias to the transistor 25 of the amplifier VA to cut that transistor off and thus block the forward path to circuit 35. When relay 70 operates, the emitter of transistor 25 is transferred from resistor 51 to the grounded resistor 38, whereupon that transistor again conducts. Specification 729,261 is referred to.
Patent GB-1360412-A (GB)
Title: Curing aromatic resins
IPC: C08L61/00
Filed: 1972-09-08
Abstract: 1360412 Curing aromatic resins ALBRIGHT & WILSON Ltd 8 Sept 1972 [7 Sept 1971] 41691/71 Heading C3R Resins containing repeating units of formula where Ar* is a divalent or trivalent aromatic hydrocarbon or hydrocarbonoxy group which may be substituted, Ar is the residue of a phenolic compound and n is 0 or 1, are cured by heating them with hexamethylene tetramine and at least one of the following acids: benzilic acid, benzoic acid, cinnamic acid, hydrocinnamic acid, p-hydroxy benzoic acid, α-naphthoic acid, phenyl acetic acid, salicylic acid, p-toluic acid and p-toluene sulphonic acid. The resin may be one obtained by reacting a xylylene glycol dimethyl ether or a xylylene dichloride with a phenol. In examples such resins are mixed with hexamethylene tetramine and various of the listed acids and cured on a heated roll mill, the compositions also containing asbestos flour, magnesium oxide and calcium stearate.
Patent GB-882785-A (GB)
Title: Improvements in industrial truck drive
Inventor: COLDWELL JOE DAVIDSON
IPC: B66F9/075
Filed: 1957-04-18
Abstract: 882,785. Industrial truck driving gear. CONVEYANCER FORK TRUCKS Ltd. April 1, 1958 [April 18, 1957], No. 41821/60. Divided out of 12777/57. Class 79(2). A fork lift truck has a pair of wheels 1, 2 independently driven by hydraulic or pneumatic motors 30, 31 through supply lines 32, 33 from pumps or compressors 34, 35, the circuits incorporating valves for varying the motor speeds on opposite sides and for cutting off or reversing the drive on one side during steering. Rheostats 10, 11 incorporated in the steering system operate to control pressure reducing valves (not shown) for varying the speeds. Movement of the steering sprocket 9 of the steerable wheel through a predetermined angle brings an abutment 14 into engagement with valves 18 or 20 which stop or reverse the motor on the inside of the turning circle.
Patent GB-930084-A (GB)
Title: Fluid coupling
IPC: F16D33/00
Filed: 1959-12-09
Abstract: 930,084. Hydraulic couplings. AMERICAN RADIATOR & STANDARD SANITARY CORPORATION. Dec. 9, 1959 [Dec. 15, 1958], No. 41893/59. Class 69 (2). An hydraulic coupling comprises first and second stages A, B, Fig. 1, between an input member 10 and an output member 12, the stages being connected with one another so that at high output speeds each of the stages transmits a portion of the torque from the input member to the output member, and at low output speeds the second stage is automatically substantially uncoupled. The input member 10 is connected to the impeller 52 and casing 32, 38 of the first stage and, by a sleeve 42, to the impeller 54 of the second stage. The turbines 64, 84 of the first and second stages and the casing 92 of the second stage and connected to the output member 12. Fluid is supplied through a bore 100 in the input member and passages 71 to the first stage, some of the fluid passing through ports 72 into the working circuit of the first stage and some passing through a passage 68 to the outside of the turbine of the first stage and through a passage 104 and ports 106 to the inside of the casing 92 of the second stage. At low output speeds, centrifugally-operated valves 94 in the casing 92 are open and the fluid in the second stage is discharged through ports 110. At high output speeds, the valves 94 close and the fluid passes through a gap 114 into the working circuit of the second stage. When the output speed drops, the valves open to empty the second stage, ports 122, 124 preventing vacuum in the circuit retarding the emptying of the fluid. In an alternative embodiment, the casing 92, Fig. 2, is formed with an opening 130 and ports 132. At low output speeds, the fluid in the second stage is discharged through the opening and ports, and at high output speeds, the fluid passes through the gap 114 into the working circuit.
Patent GB-1470705-A (GB)
Title: Soluble polyimides derived from phenylindane diamines and or dianhydrides and process for their manufacture
IPC: C07C211/41
Filed: 1974-09-26
Abstract: 1470705 Soluble polyimides CIBA-GEIGY AG 26 Sept 1974 [1 Oct 1973] 41939/74 Heading C3R Soluble polyimides of inherent viscosity at least 0À1 consisting essentially of units each having the formula wherein Z is a tetravalent radical containing at least one aromatic ring and Z<SP>1</SP> is a divalent aromatic, aliphatic, cycloaliphatic or heterocyclic radical have, as at least 10% of the total Z and Z<SP>1</SP> radicals, phenylindane radicals when Z are and when Z<SP>1</SP> are wherein R 1  is H or C 1-5  alkyl and R 2  to R 5  are each independently H, Ha or C 1-4  alkyl. They may be prepared by including at least 10 mol per cent of a phenylindene tetracarboxy and/or diamino compound in the monomers used to form the polyimide. Numerous possible comonomers are specified.
Patent GB-1023968-A (GB)
Title: Improvements in or relating to the production of hydrogen and alkali metal compounds
IPC: C01B3/10
Filed: 1964-10-15
Abstract: Hydrogen and an alkali metal compound which is the cyanide or the hydroxide are produced by circulating a stream of an aqueous solution of said alkali metal compound in a flow-path which includes a pipeline reactor through which the stream is forced under conditions of turbulent flow and with a flow rate of at least 1.3 feet/second and injecting into the stream whilst in the reactor a stream of molten alkali metal having a diameter not exceeding 1/16 inch, the flow rates of the alkali metal and the aqueous solution being such that the weight ratio of water/alkali metal in the reactor is at least 35/1 and is preferably at least 60/1.  The diameter of the metal stream is preferably 1/32-1/64 inch being not less than 1/64 inch and the aqueous solution is preferably fed into the reactor in a direction at 90 degrees to the flow of the metal, and symmetrically surrounds the metal thread.  The reactor has a right-angled bend in its downstream portion, and the injection nozzle for the alkali metal may have more than one orifice in it and may include a valve which permits the shutting off of the alkali metal stream at the delivery end of the nozzle.  The alkali metal is preferably sodium which is injected at a temperature of 100-150 DEG  C. and the temperature of the solution leaving the reactor is from 50 DEG  C. to just below the boiling point of the solution when produced, NaOH being preferably not less than 90 DEG  C. whilst with NaCN the temperature is from 50-80 DEG  C.  The NaCN is produced by neutralizing the NaOH produced in the circulating stream by the addition of HCN, preferably liquid, to a portion of the circulating stream.  When producing NaOH, the initial solution contains NaOH and a portion is tapped off to give the product.  Preferred compositions are given for the circulating stream both for NaOH and NaCN.  The hydrogen produced is disengaged from the aqueous circulating solution before it is recycled to the reactor and before any is removed to produce NaCN or NaOH and the cyanide produced is obtained by crystallization.
Patent GB-977149-A (GB)
Title: Improvements in or relating to nuclear reactor fuel elements
Inventor: WYNNE EDWARD JEFFREY
IPC: G21C3/10
Filed: 1961-11-29
Abstract: 977,149. Welding; stamping. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Nov. 23, 1962 [Nov. 29, 1961], No. 42732/61. Headings B3Q and B3R. [Also in Division G6] A reactor fuel element comprising solid nuclear fuel enclosed in a metal container has end caps attached to the container by both fusion and pressure welding. An end cap 7 having a hollow frusto-conical portion 3a is placed in the outwardly splayed frusto-conical end 2a of the magnesium alloy fuel can 2, and both are heated to 500‹ C. They are then placed in the die of an extrusion press which has been heated to 300-400‹ C. and extruded by means of a basically cylindrical plunger which fits within the hollow portion of the end cap. The extrusion pressure welds the contacting peripheries of the end cap and can and results in an overall thickness reduction of some 50%, and a shape as illustrated in Fig. 1. The end cap is then fusion welded at 4 by the argon arc progress.
Patent GB-1456359-A (GB)
Title: Biphenyl carboxylic esters
IPC: G02F1/13
Filed: 1975-10-20
Abstract: 1456359 Biphenyl carboxylic esters MERCK PATENT GmbH 20 Oct 1975 [22 Oct 1974 6 Aug 1975] 42915/75 Heading C2C [Also in Division C4] The invention comprises biphenyl carboxylic esters of the general formula wherein X is -COO- or -OCO- and R 1  and R 2 , which can be the same or different, are unbranched or branched C 1 -C 8  alkyl or alkoxy groups. They may be obtained by reacting at - 50 to + 250 C. a biphenyl compound of the formula wherein Z is OH, OMe, COOH or a reactive derivative of a carboxyl group and Me is an equivalent of a metal cation, with a compound of the formula wherein Z<SP>1</SP> is COOH or a reactive derivative thereof when Z is OH or OMe, and is OH or OMe when Z is COOH or a reactive derivative thereof. They have useful liquid crystal properties. Carboxylic acids of Formula IV may be obtained by hydrolysis of 4-cyanobiphenyls substituted in the 4<SP>1</SP>-position.
Patent GB-1205036-A (GB)
Title: Improvements in or relating to a road-traffic counting device for motor vehicles
IPC: G08G1/042
Filed: 1967-09-21
Abstract: 1,205,036. Road traffic detectors; counting apparatus. L'ECLAIRAGE DES VEHICULES SUR RAIL. 21 Sept., 1967 [2 Nov., 1964], No. 42990/67. Headings G4D and G4Q. In a road traffic counting arrangement, for motor vehicles, three adjacent induction loops I, II and III are positioned transversely to the axis of the roadway and a counting means including logical circuits prevents data supplied by a detector D2 associated with the middle loop II from reacting a counting means K when either one or both of the detectors D1, D3 associated with the outer loops I, III is excited. The loops are arranged across a two lane roadway and the middle loop II has a width at least equal to the maximu width of the largest vehicle so that one vehicle cannot energize both loops I and III. Each detector D1, D2, D3 controls via contacts d1, d2, d3 (Fig. 2b) a relay M, N, P which have normally open contacts m1 n1, p1 (Fig. 2c) connected to a counter K. The relays M and P associated with the outer loops I and III have in addition to normally open contacts two normally closed contacts m2, p2 connected in series with the open contact n1 of the relay N associated with the middle loop II. This arrangement ensures that when either one or both the outer loops I and III are energized the circuit including the contacts m2, p2 is open. The operation of the contacts n1 associated with the middle loop is delayed with respect to the contacts of the other loops by an R.C. network connected to its relay N or by placing the leading edge of the middle loop II behind that of the other loops (Fig. 1, not shown) so as to ensure that the relays operate in the correct sequence. To avoid supplying a pulse to the counter K when the contacts m2 and/or p2 release with contact n1 still closed the relays M and P associated with the outer loops include holding contacts m3 and p3 connected in series with normally open contacts actuated by the relay N associated with the middle loop. The loops may be trapezoidal, rhombic or oval in shape. The detectors D may be bi-stable electromechanical, electrical and/or electronic and the relay arrangement can be electronic.
Patent GB-899391-A (GB)
Title: Rotors for dynamoelectric machines
IPC: H02K1/28
Filed: 1960-12-14
Abstract: 899,391. Core constructions. ZAVODY PRUMYSLOVE AUTOMATISACE, NARODNI PODNIK. Dec. 14, 1960 [Dec. 16, 1959], No. 43005/60. Class 35. A rotor for a dynamo-electric machine has a hollow cylindrical magnetic core connected to a shaft by cast or injection-cast non-magnetic ribs which define an even number of longitudinal ducts alternately tapered in opposite directions.
Patent GB-925925-A (GB)
Title: Improvements in containers for eggs
Inventor: GULLIVER CHARLES RONALD
IPC: B65D85/32
Filed: 1960-12-16
Abstract: 925,925. Cartons; wrappers. MARDON, SON & HALL Ltd. Oct. 20, 1961 [Dec. 16, 1960], No. 43299/60. Classes 18 and 94(1). A sleeve for a two part moulded egg carton of which one part is in the form of conical cups comprises a blank having a tongue or tongues 7 at one end to engage in a gap or gaps provided by flaps 8 arranged interiorly of the other end to lock the sleeve in position around the carton, the engagement of the tongues, which have arrow shaped heads, within the gap or gaps acting to turn the flaps to a position where they and the tongues engage the walls of a re-entrant passage between two adjacent cups and thus prevent sliding of the sleeve relative to the egg carton.
Patent GB-1218224-A (GB)
Title: Vinyl chloride
IPC: C07C17/38
Filed: 1968-09-12
Abstract: 1,218,224. Vinyl chloride. SOLVAY ET CIE. 12 Sept., 1968 [20 Sept., 1967], No. 43451/68. Heading C2C. Vinyl chloride is obtained by partially condensing the crude products of the pyrolysis of 1,2 -  dichloroethane under super-atmospheric pressure to obtain a liquid phase and allowing this liquid phase to mature for at least 2 hours at 0‹ to 100‹ C. The uncondensed products from the pyrolysis zone and the matured liquid fraction may be passed directly to a distillation column in which low-boiling impurities are removed and from which the sump product is passed to a second distillation column in which high-boiling impurities are removed. Alternatively, the uncondensed pyrolysis products may be scrubbed with some of the matured liquid fraction prior to the distillation procedure. The unsaturation process may be assisted by the addition of a hydrochlorination catalyst, such as a metal chloride.
Patent GB-1531856-A (GB)
Title: Article trimming apparatus
IPC: C03B21/04
Filed: 1976-10-20
Abstract: 1531856 Article trimming CORNING GLASS WORKS 20 Oct 1976 [24 Oct 1975] 43508/76 Heading C1M An apparatus for trimming the edge of an article made from a sheet of thermoplastic material (e.g. glass) arranged over a die 12 (Fig. 1) comprises a trimming edge 12a on the die cooperating with an edge 17a of a trimmer 17 and is controlled by hydraulic pressure which also ensures correct alignment of the trimming edges.
Patent GB-1514598-A (GB)
Title: Centrifugal compressor casing treatment
IPC: F04D27/02
Filed: 1976-10-20
Abstract: 1514598 Centrifugal compressors CATERPILLAR TRACTOR CO 20 Oct 1976 [24 March 1976] 43550/76 Heading F1C In a centrifugal compressor the flow rate at which stalling of the impeller occurs is reduced by providing circumferential grooves 24 upstream of diffuser vanes 25, the grooves being located in a vane free space 18 between the impeller 10 and diffuser section 20.
Patent GB-1433699-A (GB)
Title: Longitudinally adjustable carrying straps particularly for suspended ceilings
IPC: E04B1/18
Filed: 1974-10-08
Abstract: 1433699 Ceiling hangers DAEMPA AS 8 Oct 1974 [15 Oct 1973] 43628/74 Heading E1W [Also in Division F2] A suspended ceiling hanger comprises upper and lower rods 1, 2 having overlapping threaded portions, of identical pitch, held together by a non-resilient sleeve 3 with an in-turned tongue 4.
Patent GB-1342010-A (GB)
Title: Door hinge
IPC: E05D5/02
Filed: 1971-09-20
Abstract: 1342010 Securing binges to doors DORMA BAUBESCHLAG GmbH & CO KG 20 Sept 1971 [8 Oct 1970] 43752/71 Heading E2F A hinge has each leaf 10, 11 secured to a respective door or door frame 17, 18 by either (a) two bores 19 extending from a face of the leaf and each receiving a respective pin 26 secured to the door and a cotter 22 engaged in a bore extending parallel to said face and intersecting the bores 19 so that the cotter engages behind shoulder 31 on each pin or (b) there may be only one bore 19 with two cotters 22 engaging on opposite sides of the pin behind the shoulder 31 thereof. The pins may be formed as blind rivets receiving screws 32.