baber/WOPTO huggingface dataset:
Patent GB-1273664-A (GB)
Title: Centrifugal pump for liquids
Inventor: ENGLESBERG JULIUS LAWRENCE
IPC: F04D29/46
Filed: 1970-07-08
Abstract: 1,273,664. Centrifugal pumps. J L. ENGLESBERG. July 8, 1970 [Aug. 22, 1969], No. 33061/70. Heading F1C. A centrifugal pump comprises a pair of impellers 32, 33 driven by a common shaft 30 so as to draw liquid through respective inlets 23 and 25 and discharge it through a common outlet 26. Impeller 33 is arranged close to wall 22 so as to develop a relatively high-pressure to thereby force its delivery to the outlet 26. A float 36 acts as a skimmer to cause the impeller 33 to draw liquid from the surface 16, whereas impeller 32 draws liquid from below the surface. Inlet 23 has a hose fitting 24. The outlet 26 discharges into a filter unit 40. Removal of packing ring 14 enables the impeller assembly and casing portion 11 to move further into casing portion 10 to thereby close the apertures forming the inlet 25, whereafter the impeller 33 merely serves a sealing function to prevent liquid from leaking out of chamber 20 through opening 31.
Patent GB-410791-A (GB)
Title: Improvements relating to radio receiving apparatus
IPC: H04B1/16
Filed: 1932-11-23
Abstract: 410,791. Valve circuits for wireless reception. COLE, Ltd., E. K., WYBORN, E. J., MARTIN, A. W., and BRADFIELD, G., Priory Crescent, Southend-on-Sea. Nov. 23, 1932, No. 33067. [Classes 40 (iii) and 40 (v).] The frequency-changing valve 10, Fig. 1, of a superheterodyne receiver is coupled to the aerial through a selective input comprising two low-decrement rejector circuits 2<1>, 3<1> coupled to the coils 2, 3. One circuit is tuned 9 k.c. above and the other 9 k.c. below the received carrier-wave, and the tuning condensers are ganged to the main tuning control. The rejector-circuits 21, 31 may be combined with a negative-resistance device of known type. A frequency-correcting network 28, 29 is inserted in the input circuit of the second detector 26 to compensate for high frequency losses in the tuned circuits. Fig. 2 shows a modified frequency-correcting network for a two-grid detector valve ; whilst Fig. 3 is a second alternative which minimizes harmonics of the modulation frequencies. Specifications 344,869 and 393,081 are referred to.
Patent GB-205731-A (GB)
Title: Improvements in devices for testing the weights of fabrics or other materials
IPC: G01G17/02
Filed: 1922-12-04
Abstract: 205,731. Marks, E. C. R., (Toledo Scale Co.). Dec. 4, 1922. Apparatus fitted to calendering-machines.-In a device for testing and controlling the weight per unit length of material passing from a machine which adjusts the weight, the strip is drawn over a pair of supports and is engaged at an intermediate point by the means for detecting changes in the weight per unit length, such detecting means being substantially unaffected by changes in the tautness of the strip. The device may be used for controlling the weight per unit length of rubber-coated fabric delivered from a calendering machine. In the form shown in the Figure, the material M from the calendering machine passes over two rollers 8 (one only shown). Between the two rollers is a third roller 20 carried by a lever 18 pivoted on knife-edge. bearings 17. The lever 18 is coupled by a rod 30 and a beam 29 to a pendulum weighing-apparatus of ordinary construction. When the roller 20 is level with the rollers 8 the indicating pointer 25 registers with a predetermined mark. A poise 31 is used to bring the indicating pointer into register with the mark when the roller 20 is loaded. Normallv the tension on the material M as it passes over the rollers 8, 20 is sufficiently great to prevent small changes in tension from appreciably changing the pressure on the roller 20. If the weight of the material increases or decreases, the pointer 25 moves one way or the other and establishes corresponding electric circuits through a reversible motor 44 which correspondingly varies the distance between rollers 41, 42. Rubber R passes between the rollers and is forced into the fabric F whilst passing through rollers 42, 43 leading to the testing device.
Patent GB-933418-A (GB)
Title: Polymerization of butadiene
IPC: C08F136/06
Filed: 1961-09-15
Abstract: Butadiene is polymerized to a polymer containing units largely in cis-1,4 configuration by a process which comprises polymerizing butadiene in the presence of a catalyst which is a reaction product of an aluminium alkyl with titanium trichloride and elementary iodine, the molar ratios of aluminium alkyl to titanium trichloride being 0,1 : 1 to 12:1 and of gram atoms of iodine to gram moles of titanium trichloride 0,4:1 to 20:1.  The catalyst may be prepared by reacting the aluminium alkyl and titanium trichloride, and reacting the product so obtained with iodine.  It is preferably aged before use.  Polymerization may be effected in the presence of inert solvents, e.g. propane, butane, hexane, cyclohexane, petroleum ether, kerosene, benzene, toluene or xylene.  The product may be recovered by treating the reaction mixture with methyl ethyl ketone, methanol or isopropanol, and sodium sulphite or thiosulphate is preferably added to scavenge any free iodine.  Many suitable aluminium alkyls are listed and examples describe the polymerization of butadiene dried over calcium hydride or aluminium hydride in the presence of catalysts formed from iodine, titanium trichloride and (I-IV) triisobutyl aluminium; (V) triethyl aluminium, diisobutyl aluminium hydride, and titanium tetrachloride; (IV) triethyl aluminium and titanium tetrachloride; (VII) triethyl aluminium, diethyl aluminium chloride and titanium tetrachloride; and (VIII) triethyl aluminium, trihexyl aluminium and titanium tetrachloride.  The products have cis1,4 contents of at least 75%, and may be vulcanized with sulphur, accelerators and peroxides to form tyres, resilient mountings and torsion springs.
Patent GB-336452-A (GB)
Title: Improvements in or relating to high-potential air-break electric switches
IPC: H05B11/00
Filed: 1929-10-31
Abstract: 336,452. Koch & Sterzel Akt.-Ges. Nov. 7, 1928, [Convention date]. Transformers.- High-potential air-break switches for use on overhead conductor systems have at least one of the insulators carrying the switch parts formed to contain a graduated measuring transformer. As shown in the Figure the switch has two fixed contacts mounted on fixed insulators 13, 14 between which is disposed as third insulator 15 rotatable on a ball race 12 and carrying a switch arm 11 terminating at its end in contact-members 16, 18 adapted to engage the fixed contacts. The insulators are built up of sections and are surrounded by metal bands at each joint between sections each section carrying one stage of a transformer or choking coil. Thus the fixed insulator 13 carries the stages 24 - - 27 of a graduated potential transformer supplying a voltmeter V and the insulator 14 the stages 28 - - 31 of a graduated earthed choking coil. The stages 19 - - 21 of a graduated current transformer are contained in the central rotatable insulator 15 the first stage being connected in series with the arm 11 and the final stage passing over through flexible leads 23 to a currentmeasuring instrument A. When the switch is open this transformer is isolated from the supply so that it may be inspected or repaired. A shunt resistance 17 may be provided as shown to allow the passage of current surges provided in the current transformer. In alternative forms of switch a single-switch blade may be used and the switch blade or blades may be mounted for movement on fixed insulators. The heating of the transformers or chokes, especially in cases where oil-filled insulators are employed, is stated to prevent freezing together of the switch contacts.
Patent GB-1064175-A (GB)
Title: Elastic filaments derived from 1,3-benzenebis (methylamine)
IPC: C08G18/10
Filed: 1964-08-14
Abstract: Linear segmented polyurethanes consisting essentially of intra-linear units of formula <FORM:1064175/C3/1> where x and y are integers greater than missing text is a long chain polyether or polyester radical, and R is phenylene, biphenylene or alkylene diphenyl are prepared by reacting a prepolymer of formula <FORM:1064175/C3/2> with m xylylene diamine, said radical E being such that a hydroxyl terminated polymer of formula HO-E-OH has a M.P. of below 60 DEG  C. and a M.W. of 600-5000, wherein the structure <FORM:1064175/C3/3> represents a repeating unit of a linear urea polymer having a melting point above 200 DEG  C. and wherein 60-95% by weight of said segmented polymer is provided by the structure <FORM:1064175/C3/4> to produce an elastomeric polymer having an inherent viscosity of 1.0-4.0 decilitres per gram or above.
Patent GB-767697-A (GB)
Title: Method of perforating thermoplastic films
IPC: B26F3/08
Filed: 1953-11-30
Abstract: 767,697. Perforating thermoplastic films. WINGFOOT CORPORATION. Nov. 30, 1953 [July 3, 1953], No. 33223/53. Class 87(2). [Also in Group VIII] Thermoplastic film is perforated by means of heated needles which heat the film only in the immediate vicinity of the perforations, and heat is not applied directly to other portions of the film. The needles are of such small diameter that the perforated film is substantially impermeable to liquids but permeable to gases and vapours under low pressure differentials. In Fig. 3 thermoplastic material 1 is formed into a film by rollers 2, 3, cooled by roller 7, embossed by roller 8, cooled by rollers 9 and perforated by needles 12 mounted on a driven roll 11. The roller 11 is hollow and is heated internally by steam &c. which heats the pins. Additional heat is supplied by radiant heaters 14. The film passes between rollers 11 and 10, but only the needles of roller 11 contact the film. Roller 10 is not driven ; it consists of a hard core covered with rubber, and may have small circumferential grooves in line with the needles. Roller 10 is pressed towards roller 11 by air cylinders. The needles may be conical, a resultant hole being shown in Fig. 2. The film may be vinyl material, for which the needles may be maintained at 240‹-260‹F. Rubber hydrochloride film is mentioned, as are wearing apparel, packages and furniture covers. Specification 767,698 is referred to.
Patent GB-1376733-A (GB)
Title: Decorative article or plaything
IPC: A63F9/08
Filed: 1972-10-11
Abstract: 1376733 Boxes SCINTILLANT Ltd 11 Oct 1972 [15 July 1971] 33238/71 Heading B8P [Also in Divisions A6 B6 and G5] A decorative article, toy or puzzle comprises two or more interhinged identical cubes, each face of each cube displaying a component part of one or more representations, so that in at least one arrangement a composite representation is displayed on at least two co-extensive faces. Eight cubes of transparent acrylic resin are made of frictionally engaged halves 1, 2, Fig. 1, enclosing picture bricks 7 of cardboard or paper. They are joined by double hinges made of transparent adhesive tape or moulded integrally with cube halves. Fig. 5 illustrates the ways in which the cubes may be positioned to form seven different pictures, two of the formations being themselves cubes.
Patent GB-1362845-A (GB)
Title: Benzyl alcohol derivatives
IPC: A61K31/135
Filed: 1971-07-15
Abstract: 1362845 Benzyl alcohol derivatives TANABE SEIYAKU CO Ltd 15 July 1971 [7 Aug 1970] 33254/71 Heading C2C Compounds of the general formula (R = H, Me) and their salts are prepared by condensing 3,4-dibenzyloxyphenylglyoxal with a compound of the formula and catalytically hydrogenating the product of the formula or a salt thereof. The above compounds are cardiotonic agents and may be administered in the form of pharmaceutical preparations containing them, with or without other (unspecified) active ingredients, in association with a carrier.
Patent GB-867890-A (GB)
Title: Improvements in or relating to rotary electric switches
Inventor: NYBLAD LAURANCE JOHN
IPC: H01H9/32
Filed: 1958-10-20
Abstract: 867,890. Contact-members for switches; sparking preventing in switches. SANTON Ltd. Oct. 20, 1959 [Oct. 20, 1958], No. 33354/58. Drawings to Specification. Class 38 (5). In a rotary switch similar to that of Specification 795,366, the arc barrier is fixed to the stator and is embraced by the two metal sidecontact members.
Patent GB-1501575-A (GB)
Title: Dual function push and rotate switch for solid state watches
IPC: G04G99/00
Filed: 1976-08-11
Abstract: 1501575 Mechanical switches TIMEX CORP 11 Aug 1976 [14 Jan 1976] 33454/76 Heading H1N [Also in Division G3] A dual function rotate and push switch assembly for a solid state watch compries a shaft 12 with an electric contact in the form of an eccentric tab 11 at one end for engaging switch blades 19, 20, the shaft being retained in a selected angular position for engaging either blade by means of a stamped spring 21, comprising a pair of spaced U-shaped arms spring- biased to engage flat portions 14, 15 in a groove 13 extending around the shaft, the spring 21 also serving to bias the shaft outwards into the disengaged position. In a modification (Fig. 2, not shown) one blade (28) is engaged when the button is depressed, regardless of the angular position of the shaft while a second blade (30) is engaged on rotation and remains engaged when the button 16 is depressed. In a further modification (Fig. 3, not shown) the switch blades are spring biased to allow the tab to remain engaged during longitudinal movement of the shaft. The switch blades may be beryllium-copper stampings connected to an integrated circuit chip (not shown) through printed circuit leads.
Patent GB-798213-A (GB)
Title: Improvements relating to semiconductor devices
IPC: H01L21/00
Filed: 1954-11-19
Abstract: A point contact electrode suitable for use in a semi-conductor device (see Group XXXVI) is made of a metal which has been coated with aluminium by heating in contact with aluminium powder in a non-oxidizing atmosphere.  In the embodiment electrode wires of platinum or tungsten are heated in a mixture of 10-20 per cent aluminium powder with alumina at 400-600 DEG C. for 4 to 6 hours and preferably heated for a similar period at 800-1000 DEG C. after withdrawal from the mixture to diffuse the aluminium uniformly through the metal.
Patent GB-979734-A (GB)
Title: Improvements in or relating to connecting means in gas supply systems
Inventor: LANGSTONE ROGER JAMES
IPC: G05D7/01
Filed: 1962-09-01
Abstract: 979,734. Pipe couplings. WRIGHT, BINDLEY & GELL Ltd. Aug. 29, 1963 [Sept. 1, 1962], No. 33634/62. Heading F2G. A connecting device for a gas supply system comprises two co-operating parts 10, 24, the part 10 being connectible at 23 to a bulk supply container and the part 24 being connectible at 27 to a gas consuming appliance. The part 10 is adapted to be coupled to the part 24 by a projecting sleeve 11 in the wall of which are balls 12, their seating holes being such that the balls are capable of projecting at least predominantly either inwardly or outwardly of the wall of the sleeve. The part 24 is adapted to be coupled to the part 10 by a spigot 15 screwed in an outlet 32 and having a central tapered portion 15 and an outer tapered portion 37. At the inner end of the tapes 37 there is a groove 44 and beyond that is a ridge, ending in a shoulder. Against this shoulder is a flange 43 which is part of an outer sleeve 39 that surrounds the spigot 15 and is urged outwardly by a spring 40. When the parts are coupled together the balls 12 ride along the tapes 37 and are thus pushed outwardly of the wall of the sleeve 11, the sleeve 39 also receding, until the balls snap into the groove 44. When this position is reached the spring 40 moves the sleeve 39 to overlie the balls, thus preventing them from leaving the groove 44 and preventing the connecting means from becoming disconnected. The action of coupling the parts together causes the central tapered portion of the spigot 15 to seat in a socket 13 in the valve body 10, making a sealed connection through an 0-ring 14. Coinciding with the axis of the spigot 15 is a plunger 35 which is normally held back by a spring, but when a valve operating member 30 is turned on its axis by a lever 36 a suitably shaped portion thereof engages the end of the plunger 35 and forces it outwardly. The plunger engages the stem 19 of a valve member 18 in the body 10 which is thus moved, against a spring 21, to open the valve. In this position the lever 36 obstructs inward movement of the outer sleeve 39. Thus coupling and uncoupling may only be accomplished when the lever 36 is in the " valve off " position and disconnection may not take place when the lever is in the " valve on " position. The pressure of gas supplied to the outlet 27 is regulated by a flexible diaphragm 25 which, by means of a lever system 31, co-operates with a valve member 34 which, with its seating 33, controls the flow of gas to the outlet. A safety valve 9 is fitted.
Patent GB-618923-A (GB)
Title: Improvements in or relating to fastening-inserting machines organised for inserting fastenings into parts of shoes
IPC: A43D69/04
Filed: 1946-11-13
Abstract: 618,923. Stapling. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). Nov. 13, 1946, No. 33661. [Class 89 (iii)] In a shoe fastening-inserting machine comprising a driver having operating means and a combined fastening guide and work holder having other operating means, the two operating means are coupled together so that, while the stroke of the driver remains constant, the limit of its movement towards the work is determined by the position of the fastening guide in engaging the work. The invention is described with reference to a lasting machine of the kind described in Specification 523,480 for operating progressively along both sides of a shoe simultaneously. A throat member 20 and a driver 22 are operated from a single bell-crank lever 84 through levers 80, 130 and toggles 70, 72 and 116, 118 respectively, the rear toggle levers 72, 118 being pivoted to a block 100 which yields against a spring 102 when the throat member 20 engages abnormally thick work or the driver encounters unusual resistance. The toggle pivots 74, 120 are carried by blocks slidable in slots 78, 128 in the levers 80, 130 which are controlled by rolls 90, 134 engaging slots 94, 138 in plates 96, 140, secured over windows in the frame members 14. Staples cut by a knife and shaped by a former from a wire fed transversely through a recess in the nozzle 24 of the throat 20 are supported during driving by pivoted fingers on the nozzle. Specification 316,186, [Class 89 (iii)], also is referred to.
Patent GB-826529-A (GB)
Title: Improvements relating to neutronic reaction fuels
IPC: C22C43/00
Filed: 1957-10-29
Abstract: The reactor fuel element of the parent Specification is modified by substitution of U233 or a mixture of U233 and U235 for U235.  The fuel element may contain 5.0-23.0% of U233 or U233 and U235, 0.001-0.2% of B10, the balance being U238, B11 and a metal selected from Al and Zr, the B being evenly distributed throughout the alloy. The fuel element may be made by the process described in the parent Specification.
Patent GB-1075755-A (GB)
Title: A process for cooling and scrubbing entrained solids from hot gaseous media
IPC: B01J2/16
Filed: 1964-08-19
Abstract: 1,075,755. Removing dust from gases. CABOT CORPORATION. Aug. 19, 1964 [Sept. 5, 1963], No. 33799/64. Heading B1R. In the removal of dust from dust-laden gases composed mainly of a highly superheated vapour of a normally liquid product, the hot gases are introduced at 3 into a vessel 1 to meet an upwardly directed spray of the normally liquid product from a nozzle 5, the amount of liquid sprayed being such that it is completely evaporated into the hot gases and that it agglomerates the dust-particles in the gases. Separated dust is withdrawn at 11 and the cleaned gases leave at 15.
Patent GB-653838-A (GB)
Title: Improvements in or relating to weighing machine mechanisms
IPC: G01G3/06
Filed: 1947-12-22
Abstract: 653,838. Weighing-apparatus. HERBERT & SONS, Ltd., and HALL, R. Dec. 22, 1947, No. 33876. [Class 143] A spiral spring is employed as the weighing resistant and its anchorage is adjustable to vary the weighing range. The spiral spring 1 has its inner end secured to the shaft 2 of an indicator drum 3 whilst its outer end is anchored at 9 to a disc 10 which can be adjusted about the shaft 2 into either of two positions so as to tension the spring for weighing in the ranges 0-100 lbs. and 100-200 lbs. respectively. This adjustment is made by turning a lever connected with a toothed quadrant 11 meshing with a pinion 12 fast with the disc 10, after withdrawing a spring-loaded plunger 15 normally locking the disc in position. A sliding mask 7 is simultaneously shifted axially of the indicator drum 3 by a cord 17 to expose the appropriate one of two sets of indicia on the drum. Turning moment due to the load on the platform (not shown), is applied to the shaft 2 by way of a lever 25 connected at 24 to an arm 23 on a rock shaft 21 on which is mounted a sector connected by a steel band 18a to a drum 18 on the shaft 2. The arrangement is preferably such that the spindle 2 turns anticlockwise under load so that the spring 1 opens out. In an alternative construction, Figs. 4 and 5 (not shown), the spiral weighing spring is fitted to the rock shaft 21; a stiffer spring is employed and its movement is less. More than two weighing ranges may be provided.
Patent GB-1416210-A (GB)
Title: Reproduction of a surface decoration
IPC: B44C3/04
Filed: 1973-07-17
Abstract: 1416210 Moulding a mould MARDON SON & HALL Ltd 2 July 1974 [17 July 1973] 33943/73 Heading B5A A method of making a mould from which is prepared an impression plate for producing a decoration of low relief, i.e. a maximum depression or elevation not greater than 0À06 inch on a surface comprises (a) providing a surface of a member 10 with a decoration 12 of low relief constituted by a random arrangement of depressions and elevations (b) forming thereon a sheet 15, e.g. of P.V.C. which follows such depressions, the sheet being treated with a release agent, e.g. of silicone, (c) surrounding the sheet with a sidewall 16 to form a tray, (d) introducing moulding composition into the tray and removing the thus formed mould from the tray when the composition has set. An impression plate is produced from the mould by clamping the mould and a sheet of compressible plastics material together in a heated press and applying a backing member to the impressed sheet. The decoration 12 may comprise glass fragments, metallic sequins or clumps of confetti adhered to the member 10. The moulding composition may comprise synthetic resin fed into the tray in three stages to form superimposed layers, the first and third layers incorporating aluminium powder. When the impression plate is pressed against a foil mounted on a cartonboard sheet the foil receives a surface decoration which is a negative reproduction of the decoration on the member 10.