baber/WOPTO huggingface dataset:
Patent GB-915622-A (GB)
Title: Heteroblock copolymers and process for their preparation
IPC: C08F297/08
Filed: 1959-04-13
Abstract: Hetero block copolymers comprising sequences of alternate non-random distributed sections, each section consisting of a homopolymer of ethylene or an alpha-olefin or of a different random copolymer comprising monomeric units of ethylene and/or an alpha-olefin are made by a process which involves polymerizing the monomer or mixtures of monomers alternately, each stage being continued for a predetermined time depending on the length of the required blocks, the polymerization being effected in the presence of a catalyst containing a compound of transitional metals of Group IVa, Va and/or VIa of the Periodic Table according to Mendeleeff in a valency state lower than the maximum and a metalloorganic compound of metals of Group I, II and/or III of the Periodic Table.  Olefines specified are ethylene, propylene, butene and pentene.  The examples describe the use of a titanium trichloride-aluminium triethyl catalyst to prepare propylene-ethylene and propylene(ethylene-propylene) block copolymers, the reactions being carried in the presence of toluene or xylene as an inert diluent.  The resulting polymers may be used in the preparation of graft polymers, e.g. an ethylene-butene block copolymer may be peroxidized and then grafted with vinyl chloride, styrene, methyl methacrylate or methyl acrylate.
Patent GB-527998-A (GB)
Title: Improvements relating to windscreen wipers
IPC: A01G9/24
Filed: 1939-04-25
Abstract: 527,998. Windscreen wipers. TRICO PRODUCTS CORPORATION. April 25, 1939, No. 12428. Convention date, Aug. 16, 1938. [Class 138 (i)] In a windscreen wiper of the pivoted arm type in which the wiper blade is readily detachable from the arm, the connection between the two parts is by a stud and slot. As shown, an elongated stud 9 on the wiper blade 1 is received by a slot 10 in the arm 2 and is retained therein by a spring 22 which closes the entrance 11 to the slot. The wiper blade is urged towards the windscreen by the spring 22 and is returned to normal position by the camming action of a ridge 24 in the spring engaging a groove 25 in the wiper blade, limited pivotal movement of the blade being allowed by the shank of the stud 9 engaging curved sides 12 of the slot 10. To permit disengagement of the stud from the slot, the spring 22 is disengaged from a shoulder 19 on the arm 2. In a modification, the stud is of bent sheet metal.
Patent GB-826929-A (GB)
Title: Nuclear reactor
IPC: G21C1/12
Filed: 1946-04-25
Abstract: 826,929. Nuclear reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. April 25, 1946 [May 12, 1945], No. 12574/46. Class 39(4). A thermal nuclear reactor has a coolant in heat exchange relation with the moderator. The reactor described has a concrete shield 10, a graphite reflector 16 and a reactive portion constructed of graphite bricks 15, alternate layers of bricks containing two cylindrical bodies of uranium in each brick. The reactor is cooled with light water, which may or may not be recycled, passing through tubes 42 between headers 43, 44. Steel clad cadmium strips 40 control the reactivity, the position of the strips being indicated at 35. A boron fluoride ionization chamber 30 is used to measure the neutron flux and the circuit used with this ionization chamber is shown in Fig. 10. A well 25 extends through the concrete and reflector to the first layer of active bricks and a shaft 27 extends right to the centre of the core. Safety rods are pulled into the reactor by weights tripped by an emergency latch in case of failure of the control rod system or of the coolant circulation. The reactor may be used for producing radio isotopes such as radio-active carbon, uranium 233 or plutonium 239 or it may be used for taking radiographs through large castings using gamma rays emitted through shaft 27. Aluminium is used for lining the channels for the control rods and for the coolant. The reactor described uses natural uranium but the use of enriched uranium or uranium in the form of UOi or U 3 O 8 , carbide or fluoride is mentioned. The use of heavy water or beryllium as a moderator is described and the effects of impurities are discussed at length. Instead of aluminium pipes the coolant may be contained by copper or lead pipes and further cooling may be introduced in direct contact with the uranium, which may be in spherical or cubical form instead of cylindrical. Specification 817,751 is referred to.
Patent GB-400863-A (GB)
Title: An improved method and means for the pasteurisation of milk
IPC: A23C3/03
Filed: 1933-05-01
Abstract: Milk is pasteurized by placing it with its surface protected by a floating lid in a metallic or earthenware vessel which is placed in a pan of boiling water, removing the heating source for the water when the milk is at the pasteurizing temperature, about 60 DEG  C., and allowing the milk vessel to remain in the water for 30 minutes during which time the milk is maintained at the pasteurization temperature. The volume of hot water used is three times that of the milk.  The milk vessels employed may be standardized as to their dimensions and material so that the amount of heat absorbed in a given time from the hot water by each vessel of the same size shall be the same.
Patent GB-1384076-A (GB)
Title: Tube closures
IPC: B65D59/06
Filed: 1972-03-17
Abstract: 1384076 Tube plugging device BABCOCK & WILCOX Ltd 8 June 1973 [17 March 1972] 12609/72 Heading F2P  A tube plugging device comprises a saddle 4 that can be detachably mounted on an end of a tube 1 so that a portion 6 extends as a bridge piece across the end of the tube, a shaft 10 extending through the bridge portion and through abutment means 14 and packing means 12 encircling the shaft 10, the packing means lying between the abutment means 14 and a flange 11 on the shaft 10, and a nut 18 threaded on to the shaft 10 so that on screwing up the nut the packing 12 is compressed into sealing engagement with the tube 1. The saddle, 4 may be of arcuate shape (Fig. 2, not shown) so that it can be slid transversely on to the tube and may have an inwardly extending flange 7/K for engagement behind an enlarged portion 1a of the tube end. A locking plate 15 located by a pin 16 on the outer surface of the bridge portion 6 may be provided to prevent the saddle slipping sideways off the tube when the device is assembled. The device is of particular use in sealing the end of a stub tube 2 in a heat exchanger after a faulty tube has been removed.
Patent GB-560134-A (GB)
Title: Manufacture and use of carboxylic acid amide derivatives
IPC: C07C279/28
Filed: 1941-09-30
Abstract: Acylated amines containing at least one acylated aromatic amino group derived from a primary amino group and from an aliphatic carboxylic acid having at least 12 carbon atoms are treated with a hydrogen halide and formaldehyde or its equivalent.  Groups imparting solubility to the product are introduced by treating with a primary, secondary or tertiary amine, a thiourea, cyanamide or dicyandiamide or a thiosulphate.  The products are stated to be assistants for use in the textile, leather and paper industries, applicable as wetting and softening agents.  When applied to textiles advantageously with an after treatment at raised temperature they have waterproofing properties.  In examples: (1) stearic acid anilide is treated with paraformaldehyde and hydrogenchloride in benzene; the product after drying and removal of solvent is treated with thiourea in acetone or with dicyandiamide; for waterproofing poplin a solution is used made by diluting an alcoholic solution of the product with water and adding sodium acetate: (2) 4-stearylamino-1 : 3-dimethylbenzene is similarly converted into its chlormethyl derivative using ethylene chloride as solvent, and made soluble by means of thiourea: (3) distearyl-p-phenylenediamine is converted into its chlormethyl derivative and made soluble with thiourea; the product forms foaming solutions.  The use of acylated amines derived from aniline, xylidine, a - and b -naphthylamines, chloraniline, benzidine, dianisidine and mono and diamino substitution products of diphenylmethane, diphenylether, benzophenone and diphenylsulphone, lauric acid, oleic acid and octadecyloxyacetic acid is mentioned. Specification 537,221 is referred to.  The Specification as open to inspection under Sect. 91 comprises also the use of amides derived from any carboxylic acid.  The use of resin, naphthenic, montanic and naphthalic acids is mentioned. This subject-matter does not appear in the Specification as accepted.
Patent GB-262043-A (GB)
Title: Improvements relating to the manufacture of grey cast iron
IPC: C21C1/00
Filed: 1926-05-18
Abstract: 262,043. Hanemann, H. Nov. 25, 1925, [Convention date]. Purifying and refining.-The proportion of fine flaky graphite in grey cast iron is increased by heating to a high temperature or keeping it molten for a long time. For example, the iron mav be heated at 1400-1500‹ C. for 15 min. or kept molten at 1250-1300‹ C. for one hour. 'The progress of the change can be determined by making test castings, in the form of small rods, and examining the fracture or polished face thereof.
Patent GB-161079-A (GB)
Title: Improvements in steam heating apparatus
IPC: G05D23/02
Filed: 1920-05-07
Abstract: 161,079. Westinghouse Brake Co., Ltd., and Barty, T. May 7, 1920. Radiators; thermostats.-In a radiator 1 fitted with a thermostatic device comprising an extensible element 2 having an externally operated adjusting-device 5, means are provided to prevent access of steam from the interior of the radiator to the adjusting-device. In one arrangement the adjusting-screw 5 engages a screwed collar 6 formed as an extension of the gland 8, but separated from it by the webs 9, which allow any slight steam leakage to escape without condensing on the screwed portion 5. In a modification, the adjusting-screw 5 engages a button 12 attached to a flexible corrugated diaphragm 15, preferably of metal, which completely seals the end of the radiator, the spring 16 operating to keep the button 12 and the screw 5 in contact. In a further modification the diaphragm 15 is plain and the spring 16 and plate 17 are omitted.
Patent GB-368580-A (GB)
Title: Improvements relating to electron discharge tubes or thermionic valves
IPC: H01J1/15
Filed: 1931-04-30
Abstract: 368,580. Discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. April 30, 1931, No. 12757. Convention date, Aug. 14, 1930. [Class 39 (i).] In discharge tubes having a heated cathode, one or more auxiliary electrodes, and at least one anode, the cathode is arranged between an anode and an auxiliary electrode, and consists of an emissive material coated on a wire wound helically around a core of refractory metal. The anode 2, Fig. 1, is supported by a lead 4 and by a glass bridge 5 mounted on a wire 6, which carries a tensioning spring 7 for the cathode 3. The auxiliary electrode 11 is a metallic film on the outside of the envelope : or the electrode may be inserted in the thickness of the wall. The cathode consists of a core 12, Fig. 2, of tungsten, a helical wire 13 of nickel, and a coating of emissive material 14. The leads are connected to the four contacts 10.
Patent GB-478503-A (GB)
Title: Improvements in or relating to firing devices for automatic guns
IPC: F41A19/55
Filed: 1937-03-13
Abstract: 478,503. Automatic guns. DUNLOP RUBBER CO., Ltd., WRIGHT, J., and TREVASKIS, H: March 13, 1937, No. 12768/36. [Class 92 (ii)] Relates to firing devices in which the boltrelease member 23 is actuated pneumatically through the agency of a piston 8. According to the invention, manual means for displacing the piston is provided as an alternative to the pneumatic means. In the form shown, a spring - controlled finger - operated lever 17 pivoted at 21 carries pins 16 which pass through slots in the casing 3 and engage under a flange 10 on the piston 8. The lever 17 is thus unaffected by the pneumatic operation. The air supply pipe 1 carries the pneumatic cylinder 2 and is provided with teeth 25 engaging similar teeth on the casing 3, the parts being united at the desired angle by a screwed sleeve 26.
Patent GB-752135-A (GB)
Title: Improvements in or relating to electric motor control arrangements
IPC: B66B1/12
Filed: 1954-05-03
Abstract: 752,135. Automatic speed control systems. GENERAL ELECTRIC CO., Ltd., and FRIEDLANDER, E. S. April 13, 1955 [May 3, 1954], No. 12826/54. Class 38 (4). [Also in Group XXXVII] A three-phase, pilot motor 85 for controlling the rotor resistance of a winder motor 10 has the alternating current winding 74 of a magnetic amplifier connected in one of the supply lines to its stator, the two other phases of the motor 85 being joined to tappings in similar series-connected reactors 80, 81, which are connected across two phases of the supply. The junction of the reactors is joined to a tapping 174 near the centre of the winding 74. By controlling the degree of saturation of the magnetic amplifier the effective phase sequence of the current supplied to the motor 85 may be regulated, so that, when the amplifier is substantially unsaturated, there is a complete reversal of the phase sequence as compared with the fullysaturated condition. The magnetic amplifier has a control winding 70 and a biasing winding 73. A desired speed of the winder motor 10 may be set by adjustment of a manual control lever 24 which causes the hydraulic servo system SM to adjust the magnitude of the rotor resistance 12. The voltage of a tachometer generator 60 is compared with that derived from a reference potentiometer 72 and the error voltage is applied to the control winding 70. In this manner, the motor 85 adjusts the position of a toothed sector 78, which is linked with the slider 71 of the potentiometer 72, so that the attitude of a link 23 is dependent upon the speed of the motor 10. As a result, the magnitude of the resistance 12 is made dependent upon the speed of the motor 10 as well as the setting of the manual control lever 24. One armature terminal of the tachometer generator is connected to the negative terminal of the auxiliary direct-current supply 63 during driving operation of the winder motor, and to the positive terminal for dynamic braking, by means of a change-over switch 163. A doublepole change-over switch 62 for. the field winding 61 of the tachometer generator occupies different positions according to the operating conditions of the winder motor.
Patent GB-370212-A (GB)
Title: Improvements in cylinder machines for making paper, cardboard and other fibrous sheet material
IPC: D21F9/04
Filed: 1931-05-01
Abstract: 370,212. Making plates of cardboard, asbestos-cement, &c. AKT.-GES. DER MASCHINENFABRIK VON T. BELL ET CIE, Kriens, Lucerne, Switzerland. May 1, 1931, No. 12859. Convention date, March 14 [Class 96.] Compound webs of paper, cardboard, asbestos-cement, &c. are formed by two groups. A, B, Fig. 1, of cylinder machines 1, 2, the felts 3, 4 being so directed that the webs from the last cylinder of each group come together, and are united by press rolls 5 or a suction roll and passed successively to a couch press 9 and devices 14, 15, Fig. 1a, for cutting the web longitudinally and transversely into sheets or plates. The plates may pass from the cutters 15 by rollers 16 and belts 17 to stamping and cutting presses &c. The felt 4 &c. passes through press rolls 7 over a suction roll 8 and a tension roll 11. One or both outer layers of the sheets may be of material better than or coloured differently from that of the inner layers. The rising side of each forming cylinder may contact with a roller removing part or all' of the web from the cylinder and returning it thereto after disalignment of the fibres with jets of water, steam or gas, giving increased transverse strength and better felting ; the roller may be scraped by an axially-movable doctor. The cylinders and felts may be cleaned of cement &c. by steam.
Patent GB-596454-A (GB)
Title: Tubular netting
IPC: D04G1/00
Filed: 1945-05-23
Abstract: 596,454. Blasting. MEHLER, H. May 23, 1945, No. 12860. [Class 9 (i)] [Also in Group VIII] Explosive charges to be lowered into drill holes are placed in a knotless tubular net formed of strands 13, 14, 15, 16, interbraided to form the links L and interwoven at the joints J, [see Group VIII].
Patent GB-528209-A (GB)
Title: Improvements in and relating to composite metal structures
IPC: F16C33/12
Filed: 1939-04-29
Abstract: 528,209. Cleaning and coating metals; alloys. MOND NICKEL CO., Ltd. April 29, 1939; No. 12912. Convention date, May 27, 1938. [Classes 82 (i) and 82 (ii)] [Also in Group XXXVI] Articles, particularly bearings, made of or having a surface composed of copper or nickel or of an alloy consisting mainly of copper or nickel or both, are coated with cadmium by exposing the surface to cadmium vapour under non-oxidizing conditions. Iron or steel or their alloys may first be coated with nickel, and aluminium and its alloys with copper or nickel. Treatment of an article 10 may be carried out in a closed container 2 in which an atmosphere of carbon monoxide or hydrogen is maintained, and cadmium is vaporized in a carbon pot 5, the molten cadmium being preferably protected against oxidation when the cover 4 is removed by a layer of powdered charcoal and ammonium chloride. The articles to be treated may be first cleaned or pickled, for example in nitric acid, carbon tetrachloride and nitric acid, or nitric and hydrofluoric acid; or a steel body may be cleaned electrolytically in trisodium phosphate, and then plated with nickel in a bath of nickel sulphate and chloride at 120-140‹F. with a current density of 15-20 amperes per sq. ft. The treatment of articles made of the following alloys is referred to : (a) 67 per cent. of nickel, 30 per cent. of copper, 2 per cent. of iron, and 1 per cent. of manganese ; (b) about 67 per cent. of nickel, 30 per cent. of copper, and 3.25 per cent. of aluminium; (c) 80 per cent. of nickel, 13 per cent. of chromium, and 7 per cent. of iron.
Patent GB-1344777-A (GB)
Title: Digital flow control system
IPC: B65G47/00
Filed: 1972-03-20
Abstract: 1344777 Mass flow control system K-TRON CORP 20 March 1972 [5 Aug 1971] 12918/72 Heading G4H A system for controlling the mass flow on a conveyer comprises means for producing a digital signal representing the desired flow, means for measuring the conveyer speed and mass carried and for digitally calculating the observed mass flow and means using the difference between these signals to control the speed of the conveyer drive motor. Magnetic or optical encoder 28 is driven by the conveyer and produces a pulse train, each pulse representing an increment of movement of the conveyer. Load cell 33 produces an analogue voltage proportional to the mass on the conveyer, this is converted to a digital voltage'at 34 and fed to rate multiplier 29 which alters the pulse repetition frequency of the pulse chain from encoder 28. The output, which is proportional to the mass flow rate is fed through switch 25 in the grav.position, synch, circuit 37 and gate 47 to the "down" input of up-down counter 31. The desired mass flow is set up on register 40. The output of clock 58 is fed through multiplier 54 where it is multiplied by the desired mass flow and is then fed through synch. circuit 37 and gate 46 to the up input of counter 31. The counter output is proportional to the desired motor speed and is fed to servo amplifier 32 where it is converted to an analogue signal and used to control the conveyer drive motor speed. To prevent overflow of the counter in either direction due to discrepancies between the repetition frequencies of the two sets of pulses entering counter 31, high and low limit circuits 44, 45 operate gates 46, 47 to prevent the flow of input pulses to the counter along the relevant input line until the count drops. To prevent problems in the counter with simultaneous arrival of up and down pulses, these are supplied by synch, circuit 37 during alternate half-cycles of the output of clock 58. The measured mass flow may be totalled by counter 52 and the mass flow rate may be indicated at 72; counter 68 counting for a fixed period and then recycling.
Patent GB-1283029-A (GB)
Title: Mass rate flowmeters
Inventor: MILLER C E
IPC: G01F1/20
Filed: 1970-03-18
Abstract: 1283029 Measuring mass flow-rate electrically; measuring fluid-flow HONEYWELL Inc 18 March 1970 [18 March 1969] 12929/70 Headings G1N and G1R [Also in Division G4] A mass flow-rate meter comprises a conduit 10, a plate-like member 1 mounted transverse of the conduit for oscillatory motion transmitted from a synchronous motor 100 which motion is damped in proportion to the mass flow-rate of the fluid in the conduit whereby a meter 136 measures the magnitude of current supplied to the motor in order to maintain the amplitude of oscillations of the member at a constant value which current is a measure of motor torque and thus of fluid mass flow. A signal representing angular displacement of motor shaft 102 is fed to a comparator 118 with a reference voltage from a source 120, the difference signal is fed back to variable impedance device 138 between the A.C. source and the motor. In an alternative embodiment, Fig.4 (not shown), a constant supply torque is fed to the oscillatory member and the phase displacement measured between a signal from a transformer displacement sensor (164) and the A.C. energizing signal. Another embodiment, Fig. 5 (not shown), utilizes the peak amplitude of oscillation of the member as a measure of mass flow and the low relating them is given, the signal from the sensor (164) is fed to a peak detector (374), supply torque being constant. In a further embodiment, Fig. 6 (not shown), the damped resonant frequency of the member is measured using a digital counting method (see Division G4), the member being energized by a pulse circuit (202) and angular displacement of the member sensed by strain gauges, Fig.10 (not shown), or Piezo-electric crystals, Figs.11, 12 (not shown).
Patent GB-143225-A (GB)
Title: Improvements in couch beds
IPC: A47C17/12
Filed: 1920-05-10
Abstract: 143,225. Save-A-Room Furniture Manufacturing Co., (Assignees of Freeman, J.). May 14, 1919, [Convention date]. Bedsteads convertible into sofas; seat adjustments.-A couch can be converted into a bed, and vice-versa, by reversing the body part which is supported at its ends on the base frame by pivoted spring-controlled links. The arrangement of the mechanism is such that the springs tend to raise the body from the base and oppose its fall. The couchbed may have end members which are adapted to be inclined, ratchet and pawl adjusting devices of special construction being provided. The framework of the body part carries end bars 9 which support the frame by resting on cross-pieces 2 of the base, the parts 9 having rounded ends, or rollers. Links 13 pivoted at 12 to the members 9 are connected to bell-crank levers 14 which are pivoted at 15 to the parts 2: Springs 16, the tension of which is adjustable by means of nuts 19, are connected to the levers 14, and tend to raise the body of the couch-bed into the position shown in Fig. 5, from which it can be turned so that either the upholstered side or the side which carries the bedding lies uppermost. Mattress springs (not shown), are provided within the framework of the body. When the couch side is uppermost, the bedding occupies the space within the base which is ventilated by apertures 5. The end members of the couch-bed each comprise a frame hinged at 24 to the base. On a cross-piece 23 of each end member is pivoted a pawl 27, engaging with a fixed ratchet 26, on which a yoke 30 embracing the pawl 27 is mounted. The yoke prevents lateral movement of the pawl, and forces it into the top tooth of the ratchet when the hinged end member is in its lowest position. A chain 28 connected to the pawl 27 extends to a handle 29 outside the upholstery.