baber/WOPTO huggingface dataset:
Patent GB-986035-A (GB)
Title: Plastic foam
IPC: C08J9/14
Filed: 1963-04-09
Abstract: Foamed thermoplastic articles are produced by extruding a hot composition of a thermoplastic, a volatile organic forming agent and in addition a copolymer of an alkenyl aromatic monomer having 8-10 carbon atoms and maleic, citraconic, itaconic, acrylic or methacrylic acid anhydride or ammonium salt. 0.1-10% copolymer may be used and it may contain 50-90% alkenyl aromatic units. Specified alkenyl aromatic compounds are styrene, vinyltoluene, ethyl styrene, isopropylstyrene, and diethylstyrene.  The thermoplastic may contain 70% of units of styrene and alkyl- and halosubstituted styrenes, together with vinyl halides, acrylates and methacrylates, olefines and acrylonitrile. 0.03-0.5 moles/100 gm. of blowing agent may be used. Many other thermoplastics are specified.  Blowing agents specified are hydrocarbons and chlorofluorocarbons of at least 58 molecular weight and less than 95 DEG  C. boiling point.  The material may be extruded at 143 DEG  C. as a tube and stretched 100-200% by internal gas pressure to flatten the cells.  The blowing agent may be introduced at the extruder.  In the examples the blowing agent/thermoplastic mixture passes from the mixing zone through a cooling zone to the die.  The extruded tube runs between rollers in order to provide a closed volume on which a pressure of nitrogen can be applied through the centre of the die.  The thermoplastic is polystyrene and the nucleating agents are copolymers of styrene with maleic anhydride (1), (4), (5), acrylic acid (2) and ammoniated maleic anhydride (3). The blowing agent is n-pentane ((1), (2), (3), (5) and a n-pentane/CCl2F2 mixture (4).
Patent GB-1058786-A (GB)
Title: Improvements in or relating to hydraulic control valve instrumentalities
Inventor: TENNIS FRANCIS HENRY
IPC: F15B13/02
Filed: 1965-04-02
Abstract: 1,058,786. Valves. HYDRAULIC UNIT SPECIALTIES CO. April 2, 1965, No. 14098/85. Heading F2V. [Also in Division G3] Each one of a bank of spool valves (6, Fig. 1, not shown) controls a double-acting jack (7), each valve having a pair of anti-cavitation valves (21) as described in Specification 985,950 and a pair of relief valves (39) as described in Specification 1,009,494 by which the two sides of the jack may be interconnected. Should the valve (6) be returned abruptly to the neutral position, shown, from an operative position, say the left-hand one, the inertia of the load increases the pressure in the left-hand, working port 36, Fig. 2, and reduces it in the other working port 36. The higher pressure enters a chamber 45 in the left-hand relief valve via a spring-loaded tube 61, and when the chamber pressure is great enough it unseats a pilot valve 50 so exhausting the chamber 45 whereupon the tube 61 is spring-urged to abut a pilot-valve extension 63 and restrict further flow into the chamber 45 so that the higher pressure at the port 36 can unseat the left-hand relief valve 43 to open the left-hand port 36 to a passage 137. Since the reduced pressure in the right-hand port 36 is also present in the chamber 45 of the corresponding valve 39, the higher pressure in passage 137 directly opens the associated main closure so that the two working ports 36 are interconnected. The anti-cavitation valves may be dispensed with.
Patent GB-722131-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64C29/00
Filed: 1952-06-04
Abstract: 722,131. Aircraft. LISTER, D. J. H. June 4, 1953, [June 4, 1952], No. 14106/52. Class 4. An aircraft comprises at least one rotor element to effect take-off and landing of the craft, which rotor element is in effect, a high speed ducted fan mounted within a chamber in the underside of the craft, air intake. to the rotor being in a position other than the underside of the craft, which air is discharged beneath the craft in a manner to allow take-off or landing. The aircraft 1 is of circular or elliptical plan form and of aerofoil cross section, and it comprises a framework of T-section girders 2 joined to a peripheral rim and supported by a central ring member 3 which carries bearings 17, 18 and 19 to support a shaft 16, to which the rotor 12 is secured. The rotor is located in a compartment 13 in the underside of the aircraft, and the blades 12 may be arranged for collective pitch control and can be of a size and number so that they may be arranged in overlapping relationship to provide a continuous undersurface for the aircraft. The upper surface of the compartment 13 and the upper surface of the aircraft are provided with adjustable slats to control the flow of air through the rotor disc, and the compartment 13 is divided into four segments whereby a control effect may be exerted on the aircraft by opening or closing the slats above particular segments. The rotor is driven by four gas turbine engines, two only, 31 and 32, being shown, each engine being arranged as at 30A and 30C to exhaust into one of the four segments of the compartment 13 so that a further control effect may be obtained by varying the output of individual engines. Retractable stabilizing aerofoils and a tapered plug and socket connection between each blade 12 and the member 3 are described.
Patent GB-598258-A (GB)
Title: Improvements in and relating to the exhaust pipes of internal combustion engines
IPC: F01N3/02
Filed: 1945-06-05
Abstract: 598,258. Exhaust systems. SOC. D'APPAREILS DE CONTROLE ET D'EQUIPEMENT DES MOTEURS, S.A.C.E.M. June 5, 1945, No. 14136. Convention date, May 3, 1943. [Class 7 (:ii)] A device to prevent oil dripping out of the exhaust pipe when the engine stops running consists of a chamber 2 opening into the atmosphere through a short vertical conduit 3 in its bottom wall 6, the inner end of which is located above the level of the wall 6. A sharp edge 7 prevents oil escaping by capillary action. On stopping, oil which drips from pipe 1 is trapped in the chamber, but on restarting it is scavenged by the exhaust gases. The device may be combined with a silencer, the upper walls of the chamber being then lined with sound absorbing material.
Patent GB-476286-A (GB)
Title: Improvements in or relating to fluid pressure governors
IPC: G05D16/10
Filed: 1937-05-21
Abstract: 476,286. Pressure regulating valves. HORSTMANN, F. 0., HORSTMANN, P. F., and HORSTMANN GEAR CO., Ltd. May 21, 1937, No. 14174. [Class 135] A fluid-pressure governor of the kind in which the controlling pressure is. taken from the throat of a Venturi pipe arranged in the main outlet has the Venturi pipe adjustably mounted so that its effect may be varied. In the form shown, the main piston valve 4 is actuated by a weight-loaded piston 7 subject to outlet pressure admitted through a radial passage 8 in the Venturi pipe 9 and a stand pipe 11. The Venturi pipe is rotatably mounted in the valve casing with its axis parallel to but spaced apart from that of the valve outlet port. The Venturi may be locked in its adjusted position by a threaded ring screwed into the outlet 3. In a modification, the Venturi tube is made axially slidable.
Patent GB-234844-A (GB)
Title: Improvements relating to electron discharge valves
IPC: H01J5/26
Filed: 1925-05-29
Abstract: 234,844. Compagnie GÚnÚrale de TÚlÚ- graphie sans Fil. June 2, 1924, [Convention date]. Vacuum tubes. - The filament L and its leads are mounted on a doubly re-entrant glass tube D having a portion extending beyond the main contour of the bulb, and a cylindrical anode A is mounted on another tube B, the valve being formed by welding the two tubes together, for instance at C. A metal tube F, carrying one of the filament supports, is welded to a bent part of the tube D, and the anode is welded to the other tube B, the joints I, H being of the kind described in Specifications 223,933 and 231,824. A rod G, spaced inside the tube F, carries the other filament support, and is mounted by means of a joint J of the type described in Specification 215,475. The grid O is carried by collars R, S mounted on the tube D. During the welding operation the tubes B, D are mounted on guides to ensure automatic centring.
Patent GB-842293-A (GB)
Title: Nut and screw assembly
IPC: F16H25/22
Filed: 1958-05-05
Abstract: 842,293. Lever and nut gearing. ANDERSON CO. May 5, 1958 [Sept. 30, 1957], No. 14245/58. Class 80 (3). A plurality of rollers 32 are provided between the thread of a screw 16 and a nut structure 15. The rollers are provided with enlarged bearing surfaces 34 which engage in raceways provided by shoulders 29, 36 and 30, 38 of the nut and housed in a free cage 43. The thread of the screw has the same number of starts as the number of rollers 32 which owing to their planetary action provide additional mechanical over an ordinary screw and nut device.
Patent GB-110358-A (GB)
Title: Improvements in or relating to Water Level Indicators for Steam Boilers.
Inventor: HANSEN EIGIL AAGE
IPC: F22B37/42
Filed: 1917-10-02
Abstract: 110,358. Hansen, E. A. Oct. 7, 1916, [Convention date]. Alarms, low-water. - A bimetallic thermostatic strip d carrying a valve e in a chamber a at the top of a pipe dipping into a boiler down to the low-water level controls the passage of steam to a whistle g and to a pressure-operated electric-contact device h. When the water-level falls below the bottom of the pipe, steam passes up into the chamber and causes the bimetallic strip to open a passage f leading to the whistle and contact device.
Patent GB-1428193-A (GB)
Title: Control of gas discharge display devices
IPC: H01J11/10
Filed: 1973-03-23
Abstract: 1428193 Matrix displays FUJITSU Ltd 23 March 1973 [24 March 1972] 14258/73 Heading G5C A method of erasing data from a gas discharge display panel having a set of shift electrodes a, b, c by means of which the position of a priming discharge can be controlled and a set of display electrodes adjacent to display cells and to which sustain potentials are applied, comprises interrupting the sustain potentials when the priming discharge is in the vicinity of an energized cell to be erased, thereby allowing the priming discharge to affect wall charges at the cell such that on reapplying the sustain potentials a discharge is not re-established at said cell. An auxiliary erasing potential may be applied across cells to be erased to increase the flow of wall charges and hence shorten erasure time; it also more accurately positions the erasure. All cells may be energized and a pattern written by erasing selected cells. The panel comprises shift electrodes 2 connected in three or more groups, sequentially energized and crossed or parallel arrays of display electrodes 5, 7. The electrodes are insulated from the gas spaces by layers 3, 4, 8, electrodes 5 are mounted separately or layer 4, 5 is perforated to allow intercommunication between the gas spaces. The priming discharge may be produced between electrodes 5, 7 and display discharges between electrodes 2. The electrodes 5 may be omitted and display discharges produced between electrodes 2, 7. Control circuitry includes means for applying shift and shift erase voltages V SH , V SL  to crossed shift conductor arrays 20, 21; means for applying sustain voltage V S  to crossed display conductor arrays 22, 23 and periodically grounding them through transistors Q19, Q20, Q21 to obtain a pulsed sustaining potential. Y display electrodes are divided into groups with corresponding electrodes connected. Write signals are applied via resistors 30 to all corresponding electrodes and the group selected by earthing the other through transistors Q17, Q18. On receipt of an erasing signal and movement of the priming discharge and the application of V S  are stopped and an auxiliary erasing voltage V S  applied to selected electrodes 22. In another embodiment a priming discharge is shifted along groups of electrodes 22 successively and resistors 30 and transistors Q17, Q18 are omitted.
Patent GB-1304706-A (GB)
IPC: C08F261/06
Filed: 1970-03-24
Abstract: 1304706 Maleic anhydride-vinyl ether copolymers GAF CORP 24 March 1970 [27 March 1969] 14316/70 Heading C3P Interpolymers of maleic anhydride and vinyl ethers are prepared by reacting in the presence of a free-radical catalyst or free-radical-initiating means (a) maleic anhydride and (b) a vinyl ether of the general formula where R is a C 1-6  alkyl group or a group of the general formula (-CH 2 CH 2 -O-) n  R 1  where R 1  is a C 1-4  alkyl group and n is 1, 2, 3 or 4, or a mixture of these vinyl ethers, the reaction between (a) and (b) being conducted also in the presence of (c) as an anti-dumping agent a water-soluble copolymer of maleic anhydride and of one or more alkyl vinyl ethers of the general formula CH 2  = CH-OR 2  where R 2  is a C 10-16  alkyl group, in an organic medium which acts as a solvent for the monomers (a) and (b) and the copolymer (c) but not for the interpolymer formed, and recovering this interpolymer by removing the organic medium. Examples describe the interpolymerization of maleic anhydride and isobutyl vinyl ether in solution in benzene in the presence of lauroyl peroxide as catalyst and as anti-clumping agent a copolymer of maleic anhydride and vinyl decyl, dodecyl, tridecyl or hexadeeyl ether, which had also been prepared in solution in benzene using lauroyl peroxide as catalyst.
Patent GB-681399-A (GB)
Title: Improved method and apparatus for estimating the oxygen content of gaseous mixtures
IPC: G01N27/49
Filed: 1950-06-08
Abstract: <PICT:0681399/III/1> In the estimation of the oxygen content of gaseous mixtures by conducting the mixture as a depolarization gas to the porous positive carbon electrode of a primary cell and measuring the electrical output of a load circuit of the cell, the porous carbon electrode is impregnated with a solution of two or more heavy metal salts which are decomposed by heat, producing a superficial oxidation of the carbon electrode and forming metals or metal compounds which are catalytically active in the electrochemical reaction of oxygen.  The impregnation of the electrode may be carried out as described in Specification 675,131.  The apparatus shown comprises a zinc container 1, serving as the negative electrode 3 provided with a bore through which the gas is passed. The reading of the voltmeter 12 is kept constant by automatic adjustment of the variable resistance 10, and the electrical output is measured by means of milliammeter 11, which may be calibrated to indicate percentage of oxygen.  Electrical output may also be measured using a wattmeter or voltmeter.  When the gas tested is under pressure it may be passed through a reducing nozzle or the gas pressure on the electrode may be balanced by imparting the same pressure to the electrolyte, for example through a flexible membrane.  The apparatus may be adapted to operate warning, regulating or recording devices.
Patent GB-276102-A (GB)
Title: Improvements in advertising and displaying apparatus with changing effects
IPC: G09F11/18
Filed: 1926-06-08
Abstract: 276,102. Herbert, H. A. W. June 8, 1926. Endless chain carriers, apparatus with.- Apparatus for displaying advertisements &c. of the kind having display panels mounted on parallel transverse carriers supported on endless chains, has the panels slidingly mounted on the carriers which are yieldingly connected together and which are independently removable from the chains. The endless chains 4 are connected by rods 15. The display panels 21 have turned over edges and are slidably mounted on the carriers 9. The sarriers are provided at their ends with a pair of plates 12 formed with tubular lugs 11, one plate being fixed to its carrier and the other slidable in guides 14 and restrained by a spring 13, so as to permit relative movement of the carriers as the chains pass round the driving sprockets 2. Plates 17 are slidably mounted on the rods 15 and carry pins 19 adapted to engage the tubular lugs of a pair of adjacent carriers. By pressing the plates 17 outwardly a carrier can be removed and the panels detached.
Patent GB-798620-A (GB)
Title: Additives to prevent the corrosion of apparatus containing hydrocarbons
IPC: C10L1/22
Filed: 1957-05-07
Abstract: Corrosion of metals by acidic crude petroleum with a pH value between 2 to 5 is inhibited by the addition of from one part per million to one part per hundred by weight of a quaternary ammonium halide of the general formula <FORM:0798620/III/1> wherein R1, R2, R3 and R4 are organi radicals containing 1 to 22 carbon atoms per radical, and which may be aliphatic, cyclic or aromatic hydrocarbons or heterocyclic organic compounds containing carbon, oxygen and/or nitrogen atoms, and X is a halogen atom.  Examples give lauryl dimethyl benzyl ammonium chloride or distearyl dimethyl ammonium chloride as additives which may be dissolved in an aqueous or an organic solvent and either added to the crude petroleum or injected into the vaporized fractions in a distillation column.
Patent GB-636750-A (GB)
Title: Friction closure caps for jars and method of making the same
IPC: B65D43/02
Filed: 1947-06-02
Abstract: 636,750. Stoppers. BROWN, W. L. June 2, 1947, No. 14566. [Class 125(iii)] [Also in Group XXII] A sheet metal friction cap for jars is produced by first cutting a blank from a sheet of metal, such as lacquer-coated tin, and then bending a marginal portion of the blank to form a conoidal skirt portion 31, Fig. 3, and a circumferential flange 32. A band 22 of viscous sealing composition of the type which includes latex, synthetic rubber or other suitable material which has the property of flowing when applied, is then deposited on the portion 31 and combines with the lacquer of the metal and adheres to the cap. The flange 32 is then crimped at 24 around one margin of the band 22 to join mechanically one end of the band 22 and the lower end of the skirt. The portion 31 is next bent to form a skirt substantially at right angles to the top 20 of the cap and the skirt and sealing band are then conjointly shaped between inner and outer rolls 35, 38, Fig. 6, to provide an inwardly extending bead 27 and convergent portion 26 on the skirt and an inward annular bulge 30 on the sealing band. When a quick-setting sealing composition is used, the formation of the conoidal portion 31 may be dispensed with and the composition applie to the upstanding right-angled skirt flange on the blank (Fig. 7, not shown). Fig. 1 shows the cap applied to an under-sized jar, the bulge 30 on the sealing band slidably engaging and gripping the cylindrical sideportion a of the jar a<SP>1</SP>. When the cap is applied to anoversized jar (Fig. 1a, not shown), the space between the jar and the upper portion of the skirt is sufficient to receive the excess portion of the sealing composition which is slidably forced upwardly as the cap is forced on to the jar.
Patent GB-253539-A (GB)
Title: Improvements in or relating to devices for measuring the arches of foot-joints
IPC: A43D1/08
Filed: 1926-06-09
Abstract: 253,539. Engelhardt, G. June 10, 1925, [Convention date]. Boots and shoes, measuring for.-A portable device for measuring the arch of the foot consists of a base plate a having a side plate b against which the foot is placed so as to depress a block c and, through a crank arm e, rock a spring-controlled shaft d bearing a pointer f moving over a scale g. A locking-device, in the form of a ratchet and pawl, may be provided for the pointer, the movement of which may be recorded on a removable card or paper.
Patent GB-659229-A (GB)
Title: Improvements in and relating to electric cables provided with an aluminium sheath
IPC: H01B7/28
Filed: 1949-06-01
Abstract: 659,229. Cable sheaths. FELTEN & GUILLEAUME CARLSWERK AKT.-GES., and EMMERICH, E. June 1, 1949, No. 14736. [Class 36] An aluminium-sheathed electric cable is given a continuous protective covering of synthetic resin which is applied in the molten condition. This is preferably carried out by passing the newly-sheathed cable through a bath of solventfree molten resin. Suitable synthetic resins are polyamides, tetrafluoroethylenes and silicones.
Patent GB-406638-A (GB)
Title: Process for the manufacture of anti-corrosive articles, more particularly ships parts
IPC: C22C21/00
Filed: 1932-05-24
Abstract: Corrosion-resistant articles, particularly ship fittings which have to resist the action of sea water, and chemical plant, are made from aluminium alloys containing up to 10 per cent of magnesium, with or without up to 5 per cent of cadmium, up to 5 per cent of antimony, up to 5 per cent of bismuth, up to 3 per cent of chromium, up to 5 per cent of cobalt, or silicon up to such an amount as is required to form Mg2Si.
Patent GB-886662-A (GB)
Title: Improvements in electrically conductive brushes
Inventor: ATKINS BERNARD ROY
IPC: H01R43/12
Filed: 1957-05-09
Abstract: Aqueous suspensions of powdered carbon and polytetrafluorocthylene (P.T.F.E.) are mixed, the water removed and the dry residue subjected simultaneously to high temperature (e.g. 400 DEG C) and pressure (e.g. 2-10 tons/sq. in.) to obtain a matrix in the form of a brush (e.g. for dynamos) or from which brush pieces can be separated. Preferably, (a) the C to P.T.F.E. weight ratio is 100:12; (b) MoS2 is added to the constituents; (c) metal powder, e.g. Ag, Cu, Pb or Sn or alloys thereof is included with the constituents in aqueous suspension; (d) prior to heat and pressure treatment the constituents are intimately mixed to give a gel, dried and disintegrated.ALSO:Aqueous suspensions of powdered carbon and polytetrafluoroethylene (P.T.F.E.) are mixed, the water removed and the dry residue subjected simultaneously to high temperature (e.g. 400 DEG  C.) and pressure (e.g. 2-10 tons/sq. in.) to obtain a matrix in the form of a brush (e.g. for dynamos) or from which brush pieces can be separated.  It is preferred that: (a) the C. to P.T.F.E. weight ratio is 100:12; (b) MoS2 is added to the constituents; (c) metal powder, e.g. Ag, Cu, Pb or Sn or alloys thereof is included with the constituents in aqueous suspension; (d) prior to heat and pressure treatment the constituents are intimately mixed to give a gel, dried and disintegrated.
Patent GB-626181-A (GB)
Title: Improvements relating to axial flow turbomachines
IPC: F01D5/06
Filed: 1947-06-06
Abstract: 626,181. Making turbine blades &c. SULZER FRERES SOC. ANON. June 6, 1947, No. 15017. Convention date, June 7, 1946. [Class 83 (ii)] [Also in Group XXVI] A method of making blade blanks or blade spacers for insertion into helical grooves formed in the blade carrier of an axial flow turbine, blower, compressor or pump, includes the machining of suitably shaped helical slots or grooves in a solid of revolution to leave helical ribs and parting off these ribs at or near their roots to form individual blade blanks or spacers. Blades 2, Fig. 1, are inserted into a number of helical grooves 1 to form a number of blade rings 3. All the blade rings have the same number of blades and there are as many grooves as there are blades in a ring. The blades 2 are separated by spacers 4 and are held in position by end rings 5 screwed to the rotor body. The blade blanks and spacers are machined from a solid of revolution 9, Fig. 4, which may have a central bore 10. Helical recesses 11 are milled in the hollow body 9, so that the root 21 and root neck 21 have the finished profile. The resulting helical ribs 12 are then divided circumferentially in planes 14 normal to the axis 13 and the separate blade blanks or spacers are removed from the supporting ring 16 by cutting through the bridges 15. The blade blanks can then be profiled in a copying milling machine.. The hollow body 9 may be of tapered form.