baber/WOPTO huggingface dataset:
Patent GB-732007-A (GB)
Title: Improvements in or relating to the production of polyacrylonitrile filaments and films
IPC: B01J39/00
Filed: 1953-06-01
Abstract: In the production of filaments or films by coagulation of an aqueous saline solution of a polymer containing at least 85 per cent of polyacrylonitrile, the filament or film, while still swollen with water containing salts and still soft and plastic, is immersed in water which is in contact with a bed of at least one water-insoluble particulate ion-exchange agent capable of binding ions of the salt or salts contained in the filament or film and of substituting therefor in the water ions with less solvent action on the polymer, until the content of the salt originally present in the filament or film is materially reduced, whereafter the filament or film is finished.  The process may be effected before or after the coagulated products have been partially stretched. The ion-exchange agent may be an anion-acceptor or a cation-exchange agent or a mixture of cation- and anion-exchange agents.  A preferred cation-exchange agent is a sulphonated polymerizate of a polyvinylaryl compound.  A preferred anion-exchange agent is a quaternary ammonium derivative of a polyvinylaryl compound.  Especially desirable polyvinylaryl compounds for use in making the ion-exchange agents are copolymers of styrene with lesser amounts of divinylbenzene.  In an example, separate portions of freshly coagulated fibres, prepared from a 7 per cent solution of polyacrylonitrile in an aqueous medium consisting of 45 per cent of zinc chloride, 15 per cent of magnesium chloride and 40 per cent of water by spinning into an aqueous coagulating bath at 15 DEG  C., are immersed in separate portions of agitated water in contact with (1) a mixture of equal weights of the acetate form of a water-insoluble anion-exchange resin and of the sodium form of a water-insoluble cation-exchange resin, or (2) the anion-exchange resin alone; or (3) the cation-exchange resin alone; or (4) the acid (hydrogen) form of a water-insoluble cation-exchange resin, respectively.  The fibres are then stretched in an atmosphere of wet steam in the usual manner.  The zinc chloride and magnesium chloride contents of the fibres are found to be much lower than when the fibres are washed with a limited amount of water alone.
Patent GB-727772-A (GB)
Title: Automatic back-surge prevention valve for pipe sewers
IPC: F16K15/04
Filed: 1953-06-03
Abstract: 727,772. Valve fittings for sewers. GSENGER, A., and GSENGER, R. June 3, 1953 [June 5, 1952], No. 15296/53. Class 33. An automatic back-surge prevention valve for pipe sewers comprises a valve casing 4 with a branch 4b through which the sewage is led from the inlet pipe 3 into pipe connected to the main sewer and by the back-surge pipe 2 to a second branch 4a of the casing, and a ball valve 6 which in its normal position shown in full lines allows flow through the branch 4b but during a back-surge closes the sewage inlet 5. The casing may be made in two parts secured by bolts 8, and the ball may be a hollow r bber one.
Patent GB-456006-A (GB)
Title: Improvements in and relating to the manufacture of hobs, milling cutters, circular saws, reamers, screw-cutting taps, and the like with teeth of constant profile
IPC: B23P15/34
Filed: 1935-05-25
Abstract: 456,006. Backing-off rotary cutters. CHALLIER, M., 21, Via Bella-vista, Turin, Italy. May 25, 1935, No. 15324. Convention date, Feb. 26. [Class 83 (iii)] Hobs, milling cutters, reamers, circular saws, taps, or like tools are backed off by a process wherein the generator profile is maintained in a radial plane such as AC, Fig. 1, and is moved so that a point in the profile follows a curved directrix line such as AB whereby the backing off angle decreases as at points AE, F, B, shown with successive sharpenings while the profile remains constant. In a modification, Fig. 2, two or more such curved directrices may be used, the backing off angle decreasing along each curve, such as from P to S then suddenly increasing at S and decreasing again along the second curve ST. The curves chosen may be conic sections, spirals or arcs of circles. In Fig. 1, the directrix AB forms an arc of a circle having its centre offset from the cutter centre and a radius R equal to 2¢ times the cutter radius r. The lines AX, Fig. 1, and PX, Fig. 2, indicate the tooth top profiles corresponding to archimedian spiral relieving curves. Specification 410,677 is referred to.
Patent GB-739551-A (GB)
Title: An improved electric cable
Inventor: HORN HEINZ
IPC: H01B7/20
Filed: 1954-05-25
Abstract: 739,551. Cable sheaths. FELTEN & GUILLEAUME CARLSWERK AKT.-GES. May 25, 1954, No. 15409/54. Drawings to Specification. Class 36. In a cable having a double sheathing comprising an inner aluminium layer stuck to an outer lead layer by an adhesive which is insoluble in water, the lead layer is made so thin and an adhesive is used having such strength that under great mechanical stress the tearing strength of the lead layer is exceeded before the layers are separated. The adhesive may be of tough bitumen, which also protects the aluminium layer from corrosion and the lead layer may be as thin as may be produced by an extrusion or spraying process. Specification 096,196, [Group XXXVII], is referred to.
Patent GB-588615-A (GB)
Title: Swash-plate reciprocating pumps
IPC: F04B23/10
Filed: 1944-08-14
Abstract: 588,615. Swash-plate pumps. TRIGGS, W. W. (New York Air Brake Co.). Aug. 14, 1944, No. 15476. [Class 102 (i)] In a swash plate pump, the cylinder block 17 is gripped between two parts 11, 12 of the pump housing, a sealing ring 19 being interposed. Each piston 21 has an axial bore 22 and a transverse bore 25 through which inlet takes place when it. is exposed beyond the end of the cylinder; further radial bores 23 connect the bore 22 with grooves 24 for lubricating purposes. Each cylinder is fitted with a delivery valve 26 and delivery takes place through a passage 34 and opening 35 in the housing. The inlet to the housing is through a slot in the boss 42 on the swash plate, and lubricates the radial bearing, that communicates with a radial slot 48 in the swash plate to lubricate the surfaces of the swash plate engaging the thrust bearing 44 and an annular plate 49 against which the pistons bear; more than one annular plate may be provided, The swash plate acts as an impeller to the liquid passing through it to the interior of the housing. Each piston has a partly spherical recess into which is pressed and retained a partly spherical surface of thrust blocks 32 provided with flat faces engaging the annular plate 49.
Patent GB-505868-A (GB)
Title: Animal glue compositions
IPC: C09J189/00
Filed: 1938-05-24
Abstract: 505,868. Glue compositions. SCHULEIN, C. May 24, 1938, No. 15505. Convention date, March 7. [Class 121] Finely ground straw is added as a diluent and improving agent to animal glue, particularly for veneer work. Finely powdered inorganic substances, e.g. dolomite, calcined dolomite, calcium carbonate, kaolin, calcined gypsum, stone dust, or slate dust may also be added.
Patent GB-930399-A (GB)
Title: Improvements in fastenings for safety belts or harness or the like
IPC: A44B11/25
Filed: 1961-04-29
Abstract: 930,399. Strap fastenings. ASH & ROGERS Ltd. April 30, 1962 [April 29, 1961], No. 15572/61. Class 44. A fastening for a safety belt or harness comprises a first component part 10 adapted to be connected to one belt end portion 11 and having two cheeks 19, 20 hinged together so as to be relatively movable into open and closed positions in which latter they can be retained by a catch 29 and a second component part 12 adapted to be connected to another belt end portion 13, the two component parts, when the two cheeks 19. 20 are relatively open being adapted to be freely engaged with and disengaged from each other by relative movement in directions similar to the directions of relative initial opening and final closing movements of the two cheeks and the two parts being provided with interlocking means 18, 42 which, when the two cheeks are closed with the second component part therebetween, prevent relative engaging and disengaging movement of the two component parts to connect the two belt end portions together. As shown, the second part 12 is of plate-like formation one extremity of which includes a downwardly turned flange forming one part 18 of the interlocking means. The two cheeks 19, 20 of the first part are biased away from one another by a torsion spring 27 mounted on a hinge pin 21 for the cheeks and the catch 29 is biased into engagement with the cheek 20 by a torsion spring 32 mounted on a hinge pin 31 for the catch. A flange 36 forming the other part of the interlocking means, is struck from the cheek 19, the opening formed thereby accommodating the looped end portion 11 of the belt which passes over a bar 38 slidably mounted on the pins 21 and 31. The part 12 is properly located by a projection 39 which engages a hole 40. In use, equal and opposite compression forces are imposed upon the parts 18 and 36, when load is suddenly imposed upon the belt.
Patent GB-1224691-A (GB)
Title: Control apparatus for circular knitting machines
Inventor: SICK ERWIN
IPC: D04B35/18
Filed: 1969-03-26
Abstract: 1,224,691. Knitting-machines. E. SICK. 26 March, 1969 [8 April, 1968], No. 15709/69. Heading D1C. [Also in Division G1] Irregularities in the a.c. component produced by detecting reflections from needles passing a photo cell 6 Fig. 4 in a knitting machine are detected by circuitry responsive to the time interval .between consecutive senser output signals. The circuitry may comprise a capacitor integrator C2 receiving a constant input through a transistor T5 and Zener diode Z, the capacity being discharged by pulses from the photo-cell 6 passing an adjustable threshold device 38 to transistor 14. Excessive time intervals between pulses resulting from broken or bent needles lead to higher charge on the capacitor which is arranged to activate a relay 15 to stop the machine through a threshold switch 16, a differentiating circuit C3, R22, and a transistor T7. A diode D4 is connected to slug the relay. A circular knitting machine may have both rib and cylinder needles separately monitored to jointly control common stop and alarm apparatus. Light from a source 1, Fig. 2, may be converted into an annular beam 8 before being directed by lenses 283 on to a needle 4 and the reflected light is directed by a central lens 5 on to a photo cell 6.
Patent GB-1076734-A (GB)
Title: Improvements in or relating to amplitude modulation comparison apparatus
Inventor: LUNN GERALD KEITH
IPC: G01S1/02
Filed: 1965-04-13
Abstract: 1,076,734. Radio navigation. WAYNE KERR CO. Ltd. Feb. 18, 1966 [April 13, 1965], No. 15798/65. Heading H4D. [Also in Division G1] In an apparatus for comparing the amplitudes of two input signals of different frequencies, a signal source 14 provides a reference signal at a frequency exactly mid-way between the two input signals and this main frequency is mixed in a balanced modulator 13 with the two input signals. The signal appearing at the output of the modulator at half the difference frequency of the two input signals is detected and its amplitude represents the difference in amplitude of the two input signals. Such a system is disclosed in Specification 1,011,513 in connection with an I.L.S. navigation system, wherein the two input signals are the modulation envelopes of two transmitted signals modulated at different frequencies, whose equal amplitude locus defines a direction in which an aircraft should approach a runway. In the present apparatus, means are provided for feeding a signal of adjustable amplitude and of a frequency equal to half the difference between the frequencies of the two input signals into the detector. The adjustment is set so as to define some other approach line, so that any difference signal derived from the detector indicates deviations from this line. The system described is the same as that disclosed in Specification 1,046,558 (which provides phase-control facilities in the basic system described in Specification 1,011,513) modified by the inclusion of a 90 degree phase shifter 36 in parallel with the output from a second balanced modulator circuit 12 whose output is proportional to the sum of the modulation depths. The output from the phase shifter is adjustable by potentiometer 37, and is fed, together with the signal from the modulator 13, to a filter 18 and thence to a meter 32, whose reading indicates any deviation between the output from modulator 13 and the value set by the potentiometer 37. In order to accommodate approach lines on either side of the equal signal line, switchable phase reversers 40, 41, 42 are included at appropriate positions in the circuit. The off-set course lines, it should be noted, are defined in terms of the ratio of the difference of the modulation depths to the sum of the modulation depths.
Patent GB-1036035-A (GB)
Title: An improved liquid to gas conversion system
IPC: F17C9/02
Filed: 1964-04-16
Abstract: 1,036,035. Forcing liquids by gaseous pressure. BENDIX CORPORATION. April 16, 1964 [April 29, 1963], No. 15870/64. Heading F1R. [Also in Division F4] In a liquid oxygen converter comprising a liquid oxygen storage vessel 10 having a liquid port 15 and a gas port 16 connected together through a pressure build-up circuit including a heat exchanger 65, a pressure closing valve 52 and a combined fill, build-up, vent and relief valve 18, a Venturi-injector 75 connected to the build-up circuit intermediate the liquid port 15 and the heat exchanger directs the flow of gas from the port 16 to a supply conduit 89 when the pressure in the build-up circuit is sufficient to close the valve 52. The Venturi 75 is connected to the gas port 16 through an economy circuit including a check valve 72 and the valves 52, 18. In operation liquid oxygen passes from the liquid port 15 and is vaporized by the heat exchanger 65 whereupon it passes through the valve 52 and the combination valve 18 to the gas port 16. At the same time liquid passes through the Venturiinjector 75 to a supply heat exchanger 85 where it vaporizes and flows back through the heat exchanger 63 to the gas port 16. At a predetermined pressure the bellows 59 of the pressure valve 52 collapses whereupon the system supplies evaporated gas from the container 10 through the economy circuit to a regulator 91. Some gas is also drawn through the injector 82 of the Venturi-injector 75 and passes to the regulator 91. When the regulator 91 does not demand gas the pressure builds up as further liquid vaporizes, until the relief valve portion 48, 49 of the valve 18 vents the gas in the build-up circuit to ambient air At high flow rates liquid oxygen from the port 15 is drawn through the injector and is vaporized by the heat exchanger 85.
Patent GB-529363-A (GB)
Title: Improvements in or relating to sealing glands
IPC: F16J15/36
Filed: 1939-05-30
Abstract: 529,363. Stuffing-box substitutes. SMITH, A., and SMITH, E. A. May 30, 1939, No. 15951. [Class 122(v)] A sealing gland comprises an annular member 6 closely fitting the shaft 1, an annular member 7 loose upon the shaft 1, an annular diaphragm 14 between the members 6, 7, and an anti-friction contact surface 17 on the member 7 bearing upon the end face of a bearing 2. Lubricant under pressure bears upon one side of the diaphragm 14 and the fluid medium it is desired to exclude from the bearing 2 is exerted on the other side thereof, the difference of pressure tending to extend the diaphragm 14 and press the surface 17 against the end of the bearing. The diaphragm may be of laminated oil-resisting rubber, and the internal surface of the :annular member 7 may be curved so as to self-align itself with the shaft.
Patent GB-271267-A (GB)
Title: Improvements in or relating to petrol tanks and like receptacles
IPC: B60K15/00
Filed: 1926-06-25
Abstract: 271,267. Lobelle, M. June 25, 1926, Loss of stopper, preventing. -A drain plug d for petrol tanks &c. is pivoted to a bifurcated link f having resilient limbs which pass through the draining orifice into the tank and engage the inner wall thereof or a part in one therewith. The ends h of the arms of the link are bent outwards for a distance almost equal to the diameter of the orifice to limit the distance by which the plug may be withdrawn from the tank and, at a point rather more distant from the ends h than the length of the socket b into which the plug screws, the arms are offset outwardly to form shoulders j adapted to fit against the orifice to hold the link and plug at a predetermined distance from the tank &c. The link, the bight of which engages a pin g in a socket e on the plug d, is curved longitudinally to displace the plug to one side of the orifice when it is in the open position.
Patent GB-560686-A (GB)
Title: Improvements in hand shears
IPC: B23D29/02
Filed: 1942-11-13
Abstract: 560,686. Hand shears. TRIBE, T. F., and PRESSED STEEL CO., Ltd. Nov. 13, 1942, No. 16057. [Class 30] A hand shears for trimming heavy gauge metal pressings comprises a body portion integral with or pivoted to a handle and provided with a fixed but adjustable cutter blade and a co-operating circular cutter eccentrically mounted on a shaft connectedby a crank and link to a second handle pivoted to the first. In one form, Fig. 1, the body 11 and handle 12 are integral and the second handle 13 is connected by a link 15 to a crank 16 on a shaft carrying an eccentric cutter 21 co-operating with an adjustable fixed cutter 18. The handle 13, link 15 and crank 16 form a double toggle arrangement, the mechanical advantage of which increases as the shears are closed. In a modification, the body portion is of roughly V-shape, the arms carrying respectively the fixed blade and the circular blade. The handles are pivoted together and one is pivoted to the point of the V and the other connected by a short link to the body and by a second link to the crank on the shaft of the circular cutter.'
Patent GB-823073-A (GB)
Title: Improvements in or relating to production of ungelatinized sulfate esters of amylaceous material
IPC: C08B31/06
Filed: 1956-05-24
Abstract: The ungelatinized sulphate ester of an amylaceous material is produced by heating at 100-300 DEG  C. and at a moisture content no greater than 50% by weight, a mixture of an ungelatinized amylaceous material and sulphamic acid in the presence of an amide, the amount of moisture present during said heating being less than that which would permit gelatinization of the amylaceous material, and the heating being continued until the substantially ungelatinized amylaceous ester is formed.  Starches from any source may be used, e.g. corn, waxy maize, tapioca, sago, wheat, rice and potato starches.  They may be used raw or pretreated by heat or chemicals to give thin-boiling, fluidity, oxidized, esterified, etherified and similarly modified starches provided that the modified starch is water-dispersible and still contains free hydroxyl groups.  The prepared amides are urea and acetamide but any water-soluble, non-volatile, i.e. having a b.p. above about 115 DEG  C., amide may be used, e.g. dicyandiamide, biuret, formamide or thiourea.  Heating should be in an open system.  The mixing of the starch with the amide and sulphamic acid may be effected by spraying reagents followed by drying below p  gelatinization temperature.  The preferred moisture content for the impregnated starch prior to the reaction is 5-25% by weight. The aqueous solution of amide and sulphamic acid with which the starch is impregnated should preferably contain 5-45% of amide and 3-20% of sulphamic acid, both based on the anhydrous weight of the starch.  The ratio of amide to sulphamic acid is preferably 1:1 to 8:1.  In examples, corn starch, wheat starch, tapioca starch, waxy maize starch, "inhibited" corn starch (i.e. treated with epichlorhydrin as in Specification 641,222, [Group IV (b)]) or "75-fluidity" starch are treated with sulphamic acid in the presence of urea or acetamide.  Reference has been directed by the Comptroller to Specification 755,461, [Group IV (b)].
Patent GB-849290-A (GB)
Title: Improvements in or relating to diesel engine pre-combustion chambers
IPC: F02B3/00
Filed: 1958-05-20
Abstract: 849,290. Combustion chambers. MASCHINENFABRIK AUGSBURG-NURNBERG A.G. May 20,1958 [July 26, 1957], No. 16162/58. Class 7(3). The wall of a precombustion chamber is provided with a guide channel 4, Fig. 4, which receives the injected fuel and guides it towards the chamber outlet orifices. The channel may be recessed into the chamber wall or formed by ribs thereon or, as in Fig. 5, by a tube 7 on the chamber wall. The insert 2, forming the chamber outlet, may be formed with a recess 8 adjacent the outlet end of the guide channel 4, which recess collects the fuel and delivers it through a passage 9 to a point near the outlet orifices. The air inlet passage 10 of the insert 2 may be arranged tangential to the chamber wall to produce an air flow in the direction of the fuel jet. A small portion of the fuel may be injected through a second jet along the axis of the chamber and the parts of the chamber wall on to which the fuel is injected may be provided with a layer of insulating material.
Patent GB-567413-A (GB)
Title: Adjustable shutter for open fireplaces and/or surrounds
IPC: F24B1/192
Filed: 1943-10-02
Abstract: 567,413. Fireplaces. WARREN, D. C. Oct. 2, 194:3, No. 16192. [Class 126] A shutter, which may be of the rigid or roller types is fitted with a pair of bolts F, Fig. 9, operated by a handle from a central disc J through links G and engaging in selected holes E, Fig. 8, in the grooves L in which the shutter slides to hold the shutter in a desired position.
Patent GB-792081-A (GB)
Title: Improvements in or relating to swash-plate pumps
Inventor: EDGE JOSEPH RONALD
IPC: F04B1/12
Filed: 1953-06-12
Abstract: 792,081. Swash-plate pumps. AUTOLIFTS & ENGINEERING CO., Ltd. Sept. 13, 1954 [June 12, 1953], No. 16197/53. Class 102(1). In a swash-plate pump, the pistons 15 are arranged in stationary cylinders and driven through rods 16 from a swash plate 6 mounted on a bearing 22 carried by a shaft 3 that also drives a rotary distributing valve 7 which controls the inlet of the liquid from the chamber 11 to the pump cylinders and the delivery to the outlet 12. A liquid supply connection 13 is attached to the chamber 11. The swash plate is prevented from turning by a projection 23 engaging a groove 24. The spherical ends 17, 18 of the rods 16 engage the pistons and swash plate respectively and the ends 17 are smaller to enable the sleeves 19 to be passed along the rods.
Patent GB-199591-A (GB)
Title: Improvements relating to window cleaning and like devices
IPC: A47L13/46
Filed: 1922-06-12
Abstract: 199,591. Powell, E. B. June 12, 1922. Handles or holders for mops and the like; multiple-tool handles; fixing by T-sockets with clamping-devices.-A device for window-cleaning and the like comprises a head a having sockets for the detachable connection of a handle c and of a pair of branch members d, e having jaws for holding wash leather, polishing material, &c. The head a has a cap b by which the members d, e are clamped in their sockets on screwing the end of the handle c into the cap. The hinged jaws f may be retained in gripping position by slots h and spring pins g, or by other suitable means.