baber/WOPTO huggingface dataset:
Patent GB-1420963-A (GB)
Title: Tape recording devices
IPC: G09B13/00
Filed: 1972-12-06
Abstract: 1420963 Storage apparatus P POMMARET 6 Dec 1972 56239/72 Heading G4C A device for use in for example teaching typewriting includes a counter 152 (Fig. 1), first preset to a number determined by an operator, and an oscillator 150 which subsequently feeds pulses on lead 155 to a recording head for recording on a tape recorder track and on lead 151 to count down the counter to zero when the supply of pulses to the head is terminated. An interrupter 157 controlled by the operator allows the supply of pulses to the counter to be interrupted or re-established. An attenuator 154 is preferably included between the recording head and oscillator. As described the counter is preset using keys each situated at the cross point of a row and column conductor in a matrix of such conductors (Fig. 3, not shown). The conductors are connected to gates (165-170, Fig. 2, not shown) connected via further gates (162) to the inputs of the counter which comprises six bi-stable stages (161). Pulses from the oscillator are fed to each stage of the counter to decrement it, a gate (173) being enabled when the count reaches zero to (1) disable a gate (176) to which pulses from the oscillator are fed to the counter and (2) block the supply of pulses from the oscillator to the recording head.
Patent GB-1408945-A (GB)
Title: Preparing polyurethanes
IPC: C08G18/10
Filed: 1972-12-06
Abstract: 1408945 Polyurethanes BOFORS AB 6 Dec 1972 [8 Dec 1971] 56294/72 Heading C3R Thermoplastic polyurethanes in the form of granules or powders are prepared by reacting a linear dihydroxy compound with a molar excess of a diisocyanate to form a prepolymer which is then dissolved in an inert anhydrous solvent and to the resulting solution is added a chain extender in a slight molar deficit relative to the molar excess of diisocyanate whereby there is a molar excess of free isocyanate groups corresponding to an amine equivalent of 4000 to 10,000 followed by a volatile tertiary amine catalyst and the reaction is allowed to proceed until the initially clear solution gradually passes into a dispersion, the dispersion being subjected to a steam treatment while vaporizing the catalyst and solvent, the polyurethane then being separated from the aqueous phase obtained. In a typical example a polyester derived from adipic acid and ethylene glycol is reacted with diphenylmethane-4,41-diisocyanate to form a prepolymer which is dissolved in xylene and to the solution is added 1,4-butanediol followed by trimethylamine as catalyst. When a dispersion of the polymer has formed, superheated steam is supplied thereto and the polyurethane granules are then separated from the aqueous phase.
Patent GB-1381477-A (GB)
Title: Speed regulating systems
IPC: F16H61/40
Filed: 1970-12-01
Abstract: 1381477 Hydrostatic transmission control HAWKER SIDDELEY DYNAMICS Ltd 1 Dec 1971 [1 Dec 1970] 56911/70 Headings F2D and F2C A hydrostatic transmission for regulating the speed of a mechanical change-speed gear input shaft 2 during ratio shift comprises a pumpmotor unit 1 connected to the shaft 2 and delivering to a fluid circuit containing an hydraulic accumulator 9 and valve 8 in a by-pass duct 7 and a valve 5 in a return line 6 to the reservoir 4. During normal operation the valve 5 is open and the valve 8 closed so that the unit 1 idly circulates liquid without affecting the speed of the shaft 2. During a down-shift in the mechanical change speed gear the valves 5, 8 are both opened whereupon pressure liquid from the accumulator 9 drives the unit 1 as a motor to accelerate the shaft 2. During an up-shift in the mechanical change speed gear the valves 5, 8 are closed and the exhaust from the unit 1 is throttled by a variable throttle valve 15 to effect braking of the shaft 2. The valves 5, 8 are hydraulically actuated valves controlled electrically by a controller 17. On completion of a shift in the mechanical change-speed gear both valves 5, 8 are closed to recharge the accumulator 9 which, when charged, actuates a pressure responsive switch 16 to remove an inhibit signal applied to a gate 22 in the control circuit of the valve 5 which thus opens. A high pressure relief valve 13 and one-way valves 10, 11 are provided.
Patent GB-1439266-A (GB)
Title: Device for pressing thermoplastic material
IPC: B29C43/58
Filed: 1973-12-07
Abstract: 1439266 Embossing THOMSON-CSF 7 Dec 1973 [8 Dec 1972] 56966/73 Heading B6J Apparatus for embossing a pattern on a sheet of thermoplastic material (e.g. polyvinyl chloride) 8 comprises press plates 1, 2, and a die 3 which is fixed to the plate 1. Between the material 8 and the die 3 is arranged an elastomeric plate 6 (e.g. neoprene), a film 7 of flexible material having a high resistance to stretching (e.g. polyethyleneterephthalate) and a metal film 9 (e.g. aluminium). The plate 6 may be fixed to the plate 2, the film 7 fixed or not to the plate 6, and the film 9 attached to, deposited on, or separate from the film 7. The elements 7, 8, 9 may be in strip form as illustrated, or in sheet form. The material 8 is heated to softening point at the time of embossing by a heater in the plate 2, by hot fluid circulating through the plate 2, or by a contact system for passing an electric current through the film 9. The film 7 has a higher softening point than the material 8. A punch 10 may produce holes in the material 8, e.g. where the material 8 is in the form of a disc having a pattern representing video frequency data and to be passed through a pick-up system, driving holes.
Patent GB-1459420-A (GB)
Title: Pharmaceutical preparations having hypolipemic and hypoglycemic activity
IPC: C07C39/15
Filed: 1973-12-10
Abstract: The metabolically active compounds correspond to the formula I or II <IMAGE>  or <IMAGE> in which the symbols R1 to R8 have the meaning given in Patent Claim 1. They are prepared by condensation of corresponding phenols with aliphatic or aromatic aldehydes or dialkyl or alkyl aryl ketones.
Patent GB-1134060-A (GB)
Title: Digital phase matching system
IPC: B64C11/50
Filed: 1966-12-22
Abstract: 1,134,060. Phase discriminators. WOODWARD GOVERNER CO. 22 Dec., 1966 [1 Feb., 1966 (2)], No. 57470/66. Heading H3A. [Also in Division G3] The phase relationship of two pulse trains of substantially equal frequency is kept constant by a system in which each pulse in one train 100 triggers a one shot multivibrator 104 whose time constant is approximately half the interval between pulses and which has complementary outputs connected to AND gates 110, 111 to which the second pulse train 101 is also applied; thus, each pulse in the second train causes an output on one or the other of the AND gates according to whether it occurs in the first or second half of the period of the first train of pulses, and these outputs are arranged to advance or retard the phase of the second pulse train. The pulses are produced by generators 90, 94 driven by master and slave aircraft engines, one pulse per revolution, and connection is effected by a stepping servomotor Wi, Wd which adjusts the length of a throttle cable. The servomotor is also controlled by signals from the system for keeping the frequency relationship constant described in Specification 1,134,059 (see Division G3). As shown, the system includes an arrangement for creating a dead band of width " D " around the " in phase " condition which comprises a second one shot multivibrator 120 of time constant D whose output inhibits further AND gates 122, 124 so that adjusting signals are blocked. A delay of ¢D is interposed at 121 to centralize this dead band around the desired phase position.
Patent GB-1148198-A (GB)
Title: Vehicle trailer
Inventor: ORAM JOHN ANDERSON
IPC: B60P3/34
Filed: 1966-12-29
Abstract: 1,148,198. Trailers. J. A. ORAM. 19 Dec., 1967 [29 Dec., 1966], No. 58220/66. Heading B7B. A trailer vehicle has its front sides rearwardly directed at substantially 45 degrees to the longitudinal centre line and is provided with internal partitions to rigidify the structure. A detachable rear panel 6 and flanged lid are also provided.
Patent GB-1270920-A (GB)
Title: H-oil process for the hydrotreating of gas-oil
IPC: C10G47/26
Filed: 1970-12-08
Abstract: 1,270,920. Hydrocracking; hydrotreating. CITIES SERVICE RESEARCH & DEVELOPMENT CO. 8 Dec., 1970 [10 Dec., 1969], No. 58237/70. Heading C5E. A hydrocarbon feed having an initial boiling point above 600 F. is reacted with hydrogen in an ebullated bed of particulate catalyst at above 650 F. and above 1700 p.s.i.g., the pressure of the treated liquid hydrocarbon stream is reduced to 1000-1700 p.s.i.g. thereby separating it into a vapour stream containing hydrogen gas and a reduced pressure liquid stream; the reduced pressure liquid stream is fractionated to produce a gas oil fraction which is contacted with the separated vapour stream in the presence of a fixed bed of hydrotreating catalyst at below 1700 p.s.i.g. Suitable feeds are atmospheric and vacuum residues. An atmospheric or vacuum residue is treated in two ebullated beds 16 and 20 arranged in series, and the effluent is separated at 26 into a liquid stream 46 and a vapour stream 28 which is separated at 32 into a gas oil 44 and a vapour stream 34 from which recycle hydrogen 38 and a liquid stream 37 are obtained. The stream 46 is reduced in pressure at 48 and separated at 50 into a vapour stream 68 containing hydrogen and a reduced pressure liquid stream 54 which is separated, together with the stream 37, in an atmospheric tower 52 to produce naphtha, kerosene, diesel oil and a residue 56 which is separated at 58 into a vacuum bottoms and a gas oil 60. The gas oil 60 is reacted in a fixed bed 64 with the hydrogen-containing vapour stream 68 and the gas oil 44 to effect hydrodesulphurization, hydrocracking, hydrogenation and hydrodenitrogenation. Suitable catalysts for both the ebullated and fixed beds comprise Co, Fe, Ni, W, Mo their oxides and sulphides and mixtures of these supported on silica and/or alumina.
Patent GB-1377987-A (GB)
Title: Plasma torches
IPC: H05H1/34
Filed: 1971-12-16
Abstract: 1377987 Welding and cutting by fusion TBILISSKOE OTDELENIE VSESOJUZNOGO NAUCHNO - ISSLEDOVATELSKOGO PROEKTNO - KONSTRUKTORSKOGO INSTITUTA ELEKTROSVAROCHNOGO OBORUDOVANIA 16 Dec 1971 58409/71 Headings B3R and B3V [Also in Division H5] In a plasma arc torch, e.g. for cutting or welding metals, comprising two arc-forming nozzles 6, 7 located in tandem in front of a cathode 1 and between which is a chamber 8 for delivering water for stabilizing the arc struck between the cathode 1 and the workpiece (not shown), atubular nozzle 5 surrounds the cathode 1 and a tangential channel 3 is provided for the delivery of cooling water to it, the end of the nozzle 5 being flush with the surface of nozzle 6 or within it, Fig. 2 (not shown), and the outer periphery of said end being located within the periphery of the passage through nozzle 6. The nozzle 5 is shaped so that cooling water from chamber 4 spreads over it and passes into gap 11 and via water collector 12 to outlet channel 13. Stabilizing water is delivered tangentially into chamber 8 via channels 10, see also Fig. 3 (not shown), and passes as a thin film through the orifices of nozzles 6 and 7. Part of this water becomes steam which, dissociating and ionizing, contributes to the formation of plasma.
Patent GB-1288840-A (GB)
IPC: F16B21/16
Filed: 1970-12-16
Abstract: 1288840 Stud and socket fastenings H OETIKER 16 Dec 1970 59693/70 Heading E2B A stud and socket type fastener for connecting apertured structural elements comprises a stud 20, Fig. 2, having a head 21 and a shank 22 with an annular groove 23 therein, and a clip 30 having a main base portion 31, Figs. 3, 4 and 10, with a slot 35 therein, a web portion 33 with an opening 36 therein which connects to the slot 35 in the portion 31, and having a bent-back portion 32 which, when the clip is moved in the direction A, Fig. 1, so as to fit the clip into the groove 23, resiliently engages the end of the shank which is remote from the head 21, further movement in the direction A causing the bent-back portion 32 to move clear of the shank end. The clip is provided with sloping portions 31a, 31b on the main base portion 31 which facilitate the tightening of the fastener. In a modification, in order to connect the stud to one of the members 10 prior to the connecting together of the two members 10, the stud is provided with an additional annular groove 28, Fig. 7 (not shown). Material of a member 10, Fig. 9 (not shown) is deformed into the groove 28 by means of a tool 50, Fig. 8 (not shown). The clip is provided with a flange 34, Fig. 4, to facilitate its removed from the stud and the latter may have a hole 24, Fig. 2, formed therein so as to receive a split pin 40, Fig. 6 (not shown).
Patent GB-1461416-A (GB)
Title: Moulded rubber products and compositions
IPC: H01M50/134
Filed: 1973-12-27
Abstract: 1461416 Vulcanizable rubber compositions RICHARDSON CO 27 Dec 1973 [13 Feb 1973] 59754/73 Addition to 1332340 Heading C3P A vulcanizable composition comprises 5-20% by weight of a styrene-butadiene rubber, at least 60% by weight of a finely divided inert filler, 2-8% by weight of a styrene-butadiene copolymer resin, 2-15% by weight of glass fibres, 3-6% by weight of a processing oil and based on the rubber 40-160% by weight of an activator and 6-12% by weight of sulphur. The composition may also contain an accelerator, e.g. an aldehyde-amine accelerator. The composition may be moulded to form a thin walled container, e.g. a battery case then cured. In the example a mixture of styrene-butadiene rubber, styrene-butadiene resin, lime as activator, coal dust as filler, sulphur, a naphthenic oil, glass fibres and as accelerator and mould release agents a primary aliphatic amine, a wax and the condensation product of butyraldehyde and aniline with dihydropyridine was moulded and cured.
Patent GB-599128-A (GB)
Abstract: 599,128. Gun-sights. WACKETT, L. J., and COMMONWEALTH AIRCRAFT CORPORATION PROPRIETARY, Ltd. Nov. 3, 1941, No. 14180. Convention date, Aug. 28. [Class 92 (ii)] In sights for aircraft guns, corrections for " own speed," " gravity drop," and loss of bullet velocity due to '' windage " or air resistance are aggregated and automatically introduced by separate cams C1, C2 into the normal training and elevating drives between gun and sight. In the form shown, the sight (not shown) is carried for elevation on a spindle 8 extending through a casing 7 containing the correction gear and trainable about an axis Y-Y parallel to the guns training axis. The solid cams Cl, C2 embodying the corrections are fast with a spindle 9 which during rotation of the casing 7 receives a reverse rotation through gearing 11, 10 and wheel 13, meshing with a fixed toothed sleeve 14, thus rendering the cams fixed in space. The sprocket 16, rotated when the gun is trained, drives the casing 7 through a spring-pressed arm 19, a differential movement being imposed through a hollow shaft 23 by the follower L1 engaging the cam C1. The sprocket 24 rotated when the gun is elevated drives the shaft 8 through gearing 26, 27, sleeve 28 and epicyclic gearing carried by the forked arms of the follower L2 of the cam C2. The cams receive a vertical sliding movement on the shaft 9 by a toothed sector 30 pivoted at 31 and engaging a gear 29 on the sleeve 28 thereby varying the cam contours engaged by the followers L1, L2 to suit gun elevation. The cams are mounted for ready replacement to suit varying data, or they may be driven through reduction gearing and formed in sectors to permit of changing the operative sector by turning the cams on their supporting shaft.
Patent GB-1401020-A (GB)
Title: Break actuators
IPC: B60T17/08
Filed: 1972-12-29
Abstract: 1401020 Spring applied compressed air released brake units CLAYTON DEWANDRE CO Ltd 31 Dec 1973 [29 Dec 1972] 60028/72 Heading F2F A brake actuator comprises a movable wall 4 urged by a spring 12 towards the output end of a housing 1 but normally held in a retracted position by compressed air introduced into the housing 1 via a supply port 17, and a service piston 9 displaceable by pressure in a service chamber 8 and being connected with an axial thrust rod 14 extending through a hollow axial extension 5 of the movable wall 4, a nut 15 being displaceable axially but non-rotatably within said hollow extension 5 and having screw-threaded connection with the thrust rod 14 so that by rotation of the rod 14 the nut 15 is traversed along the latter to release the brake after an emergency spring application. As shown, the service piston 9 is displaceable within a cylindrical shell 7 which defines the service chamber 8 the shell 7 being located at the inner side of a removable end cover 6. The end cover 6 embodies a service brake line plug connection 10. The housing 1 is provided with a series of dimples 21 to provide an inwardly facing shoulder 21a. A split ring plate 20 holding the end cover 6 in position is held by the spring- loading on the cover 6 in abutment with shoulder 21a, the end cover 6 having a shoulder 6a which prevents radial inward displacement of the ring plate 20 until the end cover 6 has been displaced inwards. A gaiter 22 is provided with a series of slits 23 coincident with a ring of apertures 24 in housing 1 whereby the gaiter 22 excludes dust from the unit but allows it to breathe. The rod 4 is connected with a brake wedge or with brake actuating linkage through means which permit rotation of the rod 4, and the nut 15 is of hexagonal or other non-circular form with the bore of the extension 5 being correspondingly formed. To release the brake after spring application when no supply of compressed air is available, the service brake line and the connection 10 are removed and the piston 9 and rod 14 are rotated to advance the nut 15 until the movable wall 4 which abuts the nut 15 at a shoulder 16 is moved sufficiently. Spring rings 18 or equivalent stops limit the travel of the nut 15. To facilitate rotation the piston 9 may have a hexagonal central boss 19 to receive a tool.
Patent GB-1326240-A (GB)
Title: Manufacture of polymer foams
IPC: C07C29/52
Filed: 1970-12-21
Abstract: 1326240 Carbodiimide-linked polymeric foams BASF WYANDOTTE CORP 21 Dec 1970 [26 Jan 1970] 60698/70 Headings C3C and C3R A rigid cellular foam composition comprising a polymer is characterized by the presence of carbodiimide linkages together with some isocyanurate and isocyanate groups. The foam is made by condensation of one or more organic polyisocyanates in the presence of a catalytic quantity of a 2,4,6-(dialkenolamino)-s-triazine catalyst; during the reaction carbon dioxide is evolved, acting as a blowing agent and producing the foam. The reactant composition is generally composed of from 0À1 to 10 parts by weight of catalyst to 100 parts by weight of the polyisocyanate, together with some optional minor components such as organic polyols which react with some of the isocyanate to form "quasi prepolymers", surfactants, plasticizers or fillers. Preferred polyisocyanates are diisocyanates of toluene and xylene, methylene diphenyl diisocyanate and lysine diisocyanate methyl ester; the most advantageous being a mixture composed of 80% by weight of 2,4-toluene diisocyanate and 20% of the 2,6-isomer. Of the catalysts, 2,4,6-tris (diethanolamino)-striazine, 2,4,6-tris-(diisopropanolamino)-s-triazine and 2,4,6-tris-(dibutanolamino)-s-triazine are specified, the first of these being preferred. The reaction may be carried out at a temperature ranging from 70 C. to 200 C., preferably between 80 C. and 120 C., at pressures between sub- and super-atmospheric, although atmospheric pressure itself is preferred.
Patent GB-1293192-A (GB)
Title: Power assisted vehicle steering
Inventor: ADAMS FREDERICK JOHN
IPC: B62D6/02
Filed: 1970-05-15
Abstract: 1293192 Power steering CAM GEARS Ltd 9 June 1971 [15 May 1970 23 Dec 1970] 23656/70 and 61083/70 Heading B7H An hydraulic power steering system for a vehicle, which comprises a pump which supplies a double-acting ram through a torque-responsive valve actuated by torque at the steering- wheel, is provided with a further valve placed between the pump and the torque-responsive valve and operated in accordance with the vehicle road speed so as to deprive progressively the torque-responsive valve of fluid supply when vehicle speed increases and conversely. The further valve of Fig. 1 has an input shaft 1 rotating in accordance with road speed and causing balls 6 to move outwards thus moving cup 4, and valve spool 11, to the right. This action progressively reduces fluid flow from the pump at duct 13 to the torque-responsive valve at duct 14. In the system of Fig. 2a a governor 25 operated by vehicle road speed causes, with increasing road speed, further valve 24 to progressively cut fluid supply from pump 21 to the torqueresponsive valve at 26 which is at the same time put into communication with reservoir 20 via line 27. In the system of Fig. 3a a pressure proportional to road speed is fed to duct 37 which causes further valve 30 to reduce supply from pump 41 and accumulator 40 to the torque responsive valve 43 wnich is gradually put into communication with reservoir 42.
Patent GB-1336740-A (GB)
Title: Mechanically variable high power inductor for testing capacitive loads such as high voltage electrical power transmission cables
IPC: H01F29/10
Filed: 1970-12-23
Abstract: 1336740 Inductors HIPOTRONICS Inc 23 Dec 1970 [29 Dec 1969] 61250/70 Heading HIT In a large inductor 10 comprising two U- shaped core members 12, 14 and electrical windings 16, the gap 82 between the core members is varied by raising and lowering the upper member 12 using a two-speed drive operating four lead screws 24, 26, 28, 30. The core members are clamped between pairs of iron beams 36 but with insulating sleeves on the clamping bolts 40 and insulating layers of fibreboard between the inside faces of the beams and the laminations. Low friction screw feed assemblies 42 include nut members 44 secured to sprockets 48 which are chain driven from a worm gear 54, the worm 70 being driven through either a low- or high-speed clutch (72, 72<SP>1</SP>) by an electric motor (60, Fig. 4, not shown). A microswitch 90 (Fig. 5) stops the motor when the upper core member and the lead screws are fully raised, a second microswitch 92 slows the drive speed below a predetermined gap size to take account of the non-linear inductance variation with gap size, and a third microswitch 94 stops the motor when the gap has closed and the lead screw drive assembly begins to travel up the screw. Means 81 for adjusting the chain tension is provided, and whole inductor is supported by a rigid steel frame 18 which may be submerged in cooling oil. The inductor in the embodiment is rated at 3000 KVA, has an upper core member weighing 5000 lbs. and may be used when testing large capacitive loads to obtain resonance in the testing circuit.
Patent GB-612507-A (GB)
Abstract: 612,507. Electric follow-up systems. BRITISH THOMSON-HOUSTON CO., Ltd. July 12, 1944, No. 13367. Convention date, July 12, 1943. [Class 40 (i)] [Also in Group XX] The pick off for a follow-up frame 16 of a gyroscope 11 comprises an alternating current electromagnet 30 carried by the gyro casing at one end of the spin axis and a pair of semicircular, electrically connected, reversely wound coils 29a, 29b, carried by the frame 16 with the diametrical parts of the coils parallel to the follow-up axis 15. Variations in flux linkage between the magnet 30 and coils 29a, 29b give a voltage unbalance in the coils which after amplification and rectification is used to drive the follow-up motor 26. The frame 16 may be caused to follow the gyro 11 with a predetermined displacement by including different resistances in the circuits of the coils at will. An electromagnetic coupling 17, 18 is provided between the gyro 11 and frame 16 to cause the gyro to process at a predetermined rate (see Group XX).