baber/WOPTO huggingface dataset:
Patent GB-954325-A (GB)
Title: Novel catalyst system and olefin polymerization therewith
IPC: C08F10/00
Filed: 1962-04-13
Abstract: Polymers of 1-alkenes having at least three carbon atoms are made by polymerizing the alkene in the presence of a catalyst consisting of an aluminium alkyl dihalide, or an aluminium alkyl sesquihalide, and titanium trichloride, and a quaternary phosphonium halide, the amounts of the catalyst components being such that the ratio of aluminium to titanium is from 0.2: 1 to 10: 1, and the ratio of aluminium to phosphorus is from 5: 4 to 10: 1. The titanium trichloride is preferably amorphous e.g. obtained by ball- or rod-milling crystalline TiCl3. Specified 1-alkenes are propylene, butene-1, and 4-methylpentene-1. The organoaluminium compound may be ethyl, propyl, or butyl aluminium dichloride, or aluminium ethyl or propyl sesquichloride. Phosphonium halides mentioned are methyl, or ethyl triphenylphosphonium chloride, and tetraethyl, or tetrapropyl phosphonium chloride.
Patent GB-458355-A (GB)
Title: Improvements in and relating to the manufacture of rubber and the like
IPC: C08K5/10
Filed: 1935-05-17
Abstract: Aqueous dispersions of rubber are thickened and stabilized by adding thereto a small proportion, for example, ,25-3 per cent, of a reagent produced by mixing an alcohol or ester thereof with a fatty acid and then with a substantially non-volatile dispersing agent for the acid. Alcohols and esters specified are cyclohexanol, the acetic ester thereof, methycyclohexanols, lower aliphatic alcohols, and mixtures thereof, e.g. a mixture of the three isomers of methycyclohexanol in cyclohexanol.  Fatty acids specified are stearic and oleic acids. Dispersing agents specified are glycerol, turkey red oil, triethanolamine and fixed alkalies.  The thickened dispersions may be used for the production of rubber goods by dipping and of rubber sheets by spreading.  In an example, a mixture comprising vulcanized latex, casein, aluminium flake and lithopone is thickened by adding thereto a reagent comprising oleic acid, a mixture of the isomers of methylcyclohexanol, triethanolamine and water.
Patent GB-355219-A (GB)
Title: Improvements in means for igniting gas burners
IPC: F23Q7/12
Filed: 1930-05-12
Abstract: 355,219. Lighting burners by electric devices. HORSTMANN, F. O., 92, Newbridge Road, HORSTMANN, J. H. G., 33, Shakespeare Avenue, and HORSTMANN GEAR CO., Ltd., Newbridge Works, all in Bath. May 12, 1930, No. 14516. [Class 75 (iii).] Electric ignition means for gas burners is controlled by an electric switch which forms part of and is operable by a hand - control member which is joined to the gas cock so as to operate the latter by a wire or wires. In the form shown in Fig. 1, a shaft 1 is connected by a pin-and-slot means 9 to a sleeve 4, so that when the shaft is rotated it moves forwardly in the sleeve at first and presses the springy contact 11 against the contact 12. Further movement of the shaft then causes the sleeve 4 and a lever attached to it to rotate, so pulling the wire 8 to open the gas cock. When this is done, the shaft is released and is moved back, as far as the pin-and-slot means allow it, by the spring 11, so breaking the electric circuit. In another form the sleeve is dispensed with and the lever which moves the wires is attached directly to the shaft, which has a limited degree of axial movement so that it can be pushed in to complete the electric circuit and then rotated to actuate the gas cock. In the form shown in Fig. 6, a tumbler knob 2a is mounted in supports 17 by pins 16, the bearings 18 for which are elongated, the pins being kept at one end of the bearings by the pressure of the spring contact 11a. The tumbler, when actuated, moves first bodily downwards to make the filament circuit, and then rotates so that the toothed quadrant 19 which it carries moves the rack 20 which pushes and pulls the wire 8. When the tumbler is released the spring contact 11a moves it to break the circuit. Filaments of substances such as platinum, palladium, tantalum, &c. having a catalytic action, or of other substances, may be employed. Specifications 327,943, [Class 80 (iii), Linkwork &c.], 328,204, [Class 135, Valves &c.], and 356,784 are referred to.
Patent GB-704513-A (GB)
Title: A combined filler cap and level indicator for the petrol tanks of motor cycles
IPC: G01F23/50
Filed: 1952-06-09
Abstract: 704,513. Indicating liquid levels. COOK, B. G. June 26, 1952 [June 9, 1952], No. 14523/52. Class 123(1) The level of petrol in a motor-cycle tank is indicated by a float c which is guided within a depending tube a by the engagement of forks e<SP>1</SP>, e<SP>2</SP> on the float with rods d<SP>1</SP>, d<SP>2</SP> associated with the tube and also engages, through pins f<SP>1</SP>, f<SP>2</SP>, a helical flat metal strip g so mounted along the axis of the tube a as to be rotatable. The upper end of the strip g has a pointer i which moves over a graduated dial x mounted on a fitting y adapted to replace the normal filling cap of the tank, and the tube a is secured to said fitting through a levelling block j.
Patent GB-817417-A (GB)
Title: Automatic gain control arrangements for transistor amplifiers
Inventor: SCULLY CHARLES THOMAS
IPC: H03G3/30
Filed: 1957-05-08
Abstract: 817,417. Transistor amplifiers. STANDARD TELEPHONES & CABLES Ltd. May 8, 1957 , No. 14597/57. Class 40 (6). In a transistor amplifier provided with automatic gain control, means comprising a pointcontact diode 10 connected in parallel with the input circuit of the transistor 1 are provided for rendering the input impedance of the amplifier substantially independent of variations of gain. Gain-control is effected by the application of a control current derived from the rectified output of the transistor 1 to its base electrode. Both the diode 10 and the diode provided by the emitter and base of the transistor 1 are connected to conduct in the same direction; thus as the input impedance of the transistor rises due to an increase in the control current supplied to its base, its emitter potential rises so that the impedance of diode 10 falls, thus tending to maintain the input impedance as seen across the terminals 12, 13 constant.
Patent GB-1483998-A (GB)
Title: Sugar substitute
IPC: A23L27/30
Filed: 1976-04-09
Abstract: 1483998 Sweeteners SUDDEUTSCHE ZUCKER AG 9 April 1976 [6 May 1975] 14699/76 Heading A2B [Also in Division C2] The novel compound glucopyranosido-1, 6- mannitol may be used as a sweetener in foods and beverages, either by itself or admixed with other sweeteners, e.g. isomaltital, benzoic acid, sulphimide, cyclohexylsulphamate, or phenylalanine-aspartic acid methyl ester, or carbohydrates, e.g. fructose, xylitol or sorbitol. It is non-splitable and non=resorbable : and suitable as a sugar substitute for diebetics.
Patent GB-636559-A (GB)
Title: Production of alkyhalosilanes
IPC: C07F7/12
Filed: 1947-06-03
Abstract: Alkylhalosilanes are prepared by reacting at superatmospheric pressure and at elevated temperatures up to 400 DEG  C. an inorganic halosilane and an alkyl halide containing at least a plurality of carbon atoms.  Suitable inorganic halosilanes are trichloro- and tribromo-silane, dichloromonofluorosilane and monobromodichlorosilane.  Suitable alkyl halides may contain up to 18 carbon atoms, e.g. ethyl chloride and bromide, propyl bromide, n-butyl chloride and bromide, isobutyl chloride, decyl chloride and bromide, dodecyl chloride and octadecyl chloride and bromide.  The pressure employed may be at least 100 pounds per square inch.  In examples, ethyltrichlorosilane, n-propyltrichlorosilane, normal, secondary and isobutyltrichlorosilanes and a mixture of lauryltrichlorosilanes are prepared.
Patent GB-528947-A (GB)
Title: Improvements in or relating to the production of pressed bodies
IPC: C08L97/02
Filed: 1939-05-17
Abstract: 528,947. Fibrous compositions containing synthetic resins. OESTERREICH, K. E. W. May 17, 1939, No. 14787. Convention date, May 19, 1938. [Class 2 (iii)] Pressed bodies are prepared by treating an aqueous dispersion of wood fibre (1) with an emulsion of coumarone resin, a sulphonated castor oil or a non-drying oil, a weak acid, and, as emulsifier, a, swollen protein, (2) air drying the fibre, (3) treating the dried fibre in aqueous dispersion with an emulsion of a swollen protein, a monosaccharide, an aromatic amine or a derivative thereof and a phenol resol, (4) cold pressing the impregnated fibres, (5) hot drying and (6) hot pressing.
Patent GB-541456-A (GB)
Title: Improvements in refrigerator cabinets
IPC: F25D23/06
Filed: 1940-10-02
Abstract: 541,456. Riveted joints. ELECTROLUX, Ltd. Oct. 2, 1940, No. 14792. Convention date, Dec. 22, 1939. [Class 83 (iv)] [Also in Group XIII] The joints of the separate outer wall plates 12, 13 of a domestic cabinet may be formed by means of flanges 25, 27 riveted together, and one flange may be curled to form a recess into which asphalt may be poured to seal the joint. At the corners of the walls the flanges of the plates are replaced by curled strips 26. Specification 499,626, [Group XIII], is referred to.
Patent GB-1298846-A (GB)
Title: Improvements in or relating to photosensitive magnetic devices
Inventor: LACKLISON DAVID EDWARD
IPC: G03G5/16
Filed: 1970-03-26
Abstract: 1298846 Radiation detectors MULLARD Ltd 19 April 1971 [26 March 1970] 14813/70 Heading G1A [Also in Divisions G3 G4 H1 and H3] The permeability of a transparent piece of magnetic material containing Fe<SP>3+</SP> ions is controlled by radiation of wavelength 0À4-1À1 microns. The preferred material is FeBO 3  or a substituted version thereof with some of the Fe replaced by Ga, Cu, Mg, Ti, Mn, V, or Ni, the irradiation taking place at 77‹K. to ensure permanency of the changes induced. Erasure of the changes may be by heating or by magnetically saturating the material. Radiation detector: since the permeability changes with radiation, the material may be used as a core of an inductor in a resonant circuit, and the resonant frequency may be calibrated against incident radiation intensity, Fig. 3 (not shown). Voltage limiter: a graph of input current against output voltage when the material is used as a transformer is non-linear, Fig. 4. Curve (a) is prior to irradiation, curves (b) and (c) are for the transformer after irradiation accompanied by primary currents of 20mA and 5mA respectively. The knee of curves (b) and (c) occurs at a current equal to that used in irradiation; hence the knee may be placed at any desired point on the curve, and at currents above this point the transformer tends to limit. Analogue storage: Fig. 11 shows a core 8 of the material at 77‹K. with an input winding 9, an oscillator and associated winding 17 and 18, and a detector and associated winding 19 and 10. The core is illuminated by lamp 2 while an input is applied to winding 9. As in the voltage limiter above, the material remembers the current when illumination ceases; the effect of this is that for a subsequent current passed through winding 9 the permeability of the material maximizes when the current equals the original input current, Fig. 10 (not shown). To stop the illumination and read the stored input switches 20, 21 are moved and a signal from the oscillator winding 18 is picked up by detector winding 10 and controls a signal passed by detector 19 to the input winding 9. Since the permeability of the material will maximize when this signal is the same as the original input, and hence maximize the coupling of windings 18 and 10, the detector output becomes the same as the original input and reading is achieved.
Patent GB-1214965-A (GB)
Title: Gear pump
Inventor: BANGS WALTER J
IPC: F04C2/10
Filed: 1969-03-20
Abstract: 1,214,965. Rotary positive-displacement pumps. TUTHILL PUMP CO. March 20, 1969 [April 29, 1968], No.14821/69. Heading F1F. A reversible gear-pump comprises a sleeve 20 fixed to a plate 37 that is coupled by a pin 38 to an end cover 22 of a housing 21 and abuts a partiallyrotatable plate 36 carrying a rotatable externallytoothed gear 34 upon an eccentric hollow-shaft 35, said gear meshing with an internally-toothed gear 30 coupled by a pin 31 to pressure-loaded plates 26, 27, which are rendered rotatable with a shaft 23 by a pin 32. The plate 36 carries a pin 41 that due to friction between this plate and the gear 30 abuts either end of an arcuate slot, or "passage", 40 in the plate 37 according to the direction of rotation of the shaft. Working fluid is admitted to spaces between the gears through a passage 48, the passage 40 and an overlapping passage 45 in the plate 36, said fluid being discharged into an outlet 44 in the shaft through mutually-overlapping passages 42, 47 in the plates 36, 37, the interior of the shaft 35 and apertures 43 in the plates 26, 27. Reversal of the shaft results in angular displacement of the plate 36 through approximately 90 degrees and therefore displacement of the fluid in the same general direction. Pressure of fluid between the plate 26 and the shaft presses the various elements against the cover 22 to keep them properly aligned with the shaft. A spring-loaded valvemember 50 relieves excess pressure in the passage 42 and presses the pump elements against the shaft when the pump is inoperative. A modification, Fig.6, differs largely in that the plate 37 is replaced by a boss 74 on an end cover 73 containing an inlet 74a for the working fluid, a pressurerelieving valve-member 81 and an outlet 77 for said fluid, which outlet can be closed by a plug (not shown). An outlet passage 85 in the shaft 68 and central apertures in the pressure-loaded plates 63 may be dispensed with. The plates 63 may not be pressure-loaded and, like the plates 26, 27, may be replaced by a single plate.
Patent GB-1172438-A (GB)
Title: Modified Oxymethylene Polymers
IPC: C08K5/1575
Filed: 1967-03-31
Abstract: 1,172,438. Oxymethylene polymer compositions. CELANESE CORP. 31 March, 1967 [1 April, 1966], No. 14827/67. Heading C3P. An oxymethylene polymer composition comprises a normally solid thermoplastic oxymethylene polymer containing adsorbed therein up to the equilibrium absorption amount of pyridine, trioxan, 1,4-dioxan, 1H,1H,5H-octafluoro - 1 - pentanol, n - butanol, benzyl alcohol, an aqueous solution of sodium carbonate, or an oxymethylene or oxyethylene glycol having between 1 and 20 oxymethylene or oxyethylene groups other than tetraethylene glycol. Optional additives are glass, carbon black, titanium dioxide, and finely divided copper. In the example, a trioxan/ethylene oxide copolymer is treated with pyridine, trioxan, or 1,4- dioxan, and in comparison, 1,6-hexane diol or diethanolamine.
Patent GB-1293459-A (GB)
Title: Corporate-network printed antenna system
IPC: H01Q21/06
Filed: 1970-03-26
Abstract: 1293459 Aerials RCA CORPORATION 26 March 1970 [1 July 1969] 14828/70 Heading H4A An aerial array comprises a plurality of dipole elements with the planar first half portions 12 thereof fixed to the top of a sheet of insulating material 15 and the planar second half portions 14 thereof fixed to the bottom of said sheet. A corporate feed network comprising opposed conductive strips 17, 19 on the faces of the sheet 15 connects each dipole element 11 to a common feed point 31, so that the length of feed line from any dipole element to said feed point is the same. The sheet 15 may be <SP>1</SP>/ 32  inch thick and be made of a low-loss polyolefin, having a dielectric constant of 2.32. The dipole half portions are fan-shaped to increase the operating bandwidth, and they and the feed network may be formed by a printed circuit process. Each dipole element is fed by the network through a series of quarterwavelength and half-wavelength transformers (the wavelength being taken at the mean operating frequency of the array) to minimize mismatching at junctions, and to make the input impedance at the common feed point equal to the individual dipole element impedance Za. The balanced impedance presented at the point 37, Fig. 2, by half the array is Za and this is transformed to an unbalanced impedance 2Za at the point B by tapering down the upper conductor 17 only of the feed line. An unbalanced impedance of 2Za is likewise presented by the other half of the array at the point B, and the combined load of impedance Za is connected by line section 57 to a coaxial cable at the point 31. A vernier impedance matching device 58 is formed by a small chip of dielectric material with a copper coating on its upper surface. It is moved to an optimum position along the line section 57, and is then cemented in place. In the network the widths of the conductive strips 17, 19 are proportioned to the characteristic impedance required (e.g. Za or 2Za) and one quarter-wavelength notches are cut at T-junctions where horizontal sections branch into vertical sections, to reduce undesirable current flows. A reflector 23, Fig. 5, may be provided, the sheet 15 being spaced therefrom by a foamed material layer. To provide weather proofing and mechanical protection, a dielectric sheet may be spaced from the other side of the sheet 15 by another foamed material layer.
Patent GB-1115533-A (GB)
Title: Rotary switch
IPC: H01H9/04
Filed: 1967-03-31
Abstract: 1,115,533. Mechanical switches; switch cases. INTERNATIONAL STANDARD ELECTRIC CORPORATION. 31 March, 1967 [2 April, 1967], No. 14853/67. Heading H1N.  A rotary switch comprises a rotor 2 on an axle 11, an indexing device 1, 6, with stops 14, 15, and a housing 8 closed by its fixed contact supporting plate 3 and a layer of a mastic compound 16, the housing edge 17 being slightly crimped after assembly of the switch and prior to the insertion of the mastic compound 16 to render the housing air-tight and moistureproof. Rotor 2 is of plastics and is spraymoulded on to axle 11. Spring-pressed ball 6 engages in one of a circular array of holes in plate 1. Rotor 2 carries up to four contact studs 4 pressed by hairpin-shaped springs 5 towards contacts 12 and elongated contacts 13 (Figs. 2, 3, not shown). Plate 3 is secured against twisting by projections 18 of housing 8 engaging recesses 9 in the plate.
Patent GB-749600-A (GB)
Title: Improvements in and relating to navigational instruments
Inventor: MACKENZIE THOMAS HERBERT
IPC: G01C17/00
Filed: 1953-05-28
Abstract: 749,600. Electric follow-up switches. BRITISH THOMSON-HOUSTON CO., Ltd. May 28 1954 [May 28. 1953]. No. 14880/53. Class 40(1) [Also in Group XIX] An electric arrangement for following the movement of an arm 3. which is determined by a cam (see Group XIX), in accordance with the magnetic deviation, comprises an arm 9 and co-operating contacts 12, 13 on the arms 3, 9 in the circuit of a changeover relay 15 controlling a reversible motor 16. A transmitter 17 driven by the motor 16 controls receivers 18, 19. The receiver 18 drives the arm 9 through worm gearing and the receiver 19 drives an indicator or moves the reference of a compass so that it indicates relative to true North. The arm 9 oscillates at the point of contact.
Patent GB-551229-A (GB)
Title: An improved flower pot
IPC: A01G9/10
Filed: 1941-11-19
Abstract: 551,229. Flower pots: HANNAH, D. Nov. 19, 1941, No. 14904. [Class 6 (ii)] Flower pots are made by drilling holes in blocks of natural dried peat.
Patent GB-419869-A (GB)
Title: Improvements relating to wind-operated reciprocating pumps
IPC: F04B5/00
Filed: 1934-05-17
Abstract: 419,869. Actuating pumps. RINGIUS, C. L., 3162, Sanabria Street, Buenos Aires. May 17, 1934, No. 14948. [Class 102 (i).] A pump rod 14 is reciprocated by a windmill and has attached to it a bucket 12 sliding in a cylinder 9 attached to a bucket 19 through which the rod 14 slides. When the rod 14 is reciprocated slowly, water passes through the inlet valve 3 to the cylinder 9 and is discharged through the ports 17, 23. When the speed of reciprocation increases, the water passing from cylinder 9 lifts the valve 21 and closes the ports 17 so that the bucket 19 is actuated and water is drawn through the inlet valve 3 and discharged through ports 18 in the bucket. The return stroke of the bucket 19 is effected through 'the spring 26. The stroke of the bucket 19 is limited by the screws 27. Restricted ports 30 may be provided in the valve 21 to prevent concussion.
Patent GB-818924-A (GB)
Title: Improvements in and relating to insoles and innersole foundations for shoes and the like
IPC: A43B17/00
Filed: 1956-06-05
Abstract: 818,924. Insoles. MIDGLEY, N. H., and DOWNEY, E. J. June 5, 1956 [June 10, 1955], No. 14966/58. Divided out of 818,923. Class 17(2) A sheet for forming insoles having a flexible forepart comprises a sheet 16 of rigid material to which strips of thinner flexible material 15, having bevelled edges, are attached. Insole blanks cut from thin sheet are passed through a skiving machine which reduces the thickness of the rigid sheet 16 over the toe area, removes it completely over nearly the whole of the area of the strip 15 and leaves its full thickness over the heel area and the central part of the waist which is reduced in thickness towards the strip 15 and towards the side edges. A sewing or an edging rib may be provided as described in Specification 818,923.
Patent GB-754277-A (GB)
Title: Means for use in cleaning vehicle windscreens
IPC: B60S1/52
Filed: 1954-05-21
Abstract: 754,277. Windscreen washers. WHATLEY, L. H. Feb. 10, 1955 [May 21, 1954; Nov. 9, 1954], Nos. 15066/54 and 32439/54. Class 138(1)  A vehicle windscreen washer comprises a liquid reservoir, made of flexible material whereby it may be comprissed by hand, connected by tubing to a jet device formed so that liquid expelled therethrough will issue in a plurality of differently directed jets and the angle between the jets is adjustable. The reservoir 1, Fig. 1, made of polythene or the like plastic material. has a screw cap 4 integral with a threaded stem through which extends, to adjacent the position of the container, a flexible tube 7. The reservoir is mounted on the vehicle dashboard 3 by a bracket 2 secured to the cap 4 by a nut 5 screwed on the threaded stem: At its other end the tube 7 is fixed to the jet device 8 secured to the vehicle scuttle 9. Referring to Fig. 3, the device 8 comprises a hollow stem 11 having a shoulder 12 the stem being secured to the scuttle 9 as shown by nut 13, a spring washer 14 being disposed between the scuttle 9 and nut. A sealing washer 15 is disposed between the shoulder 12 and the scuttle 9. An unthreaded portion of the stem 11 has a diametrical bore 21 and rotatably carries two ring elements 16, 17 having interengaging conical surfaces 19. The element 17 is also formed with an annular chamber 20 to communicate with the bore 21. The conical surface of each element is provided with a radially disposed groove 22 and a cap nut 18 on the upper threaded end of the stem 11, locks the elements 16, 17 in adjusted positions, so that one groove 22 is directed to the drivers' portion of the windscreen 10, Fig. 1, and the other groove is directed to the passengers' side of the windscreen. A sealing gasket 15x is disposed between the element 16 and the shoulder 12. If desired two or more jet devices 8 may be connected to the reservoir 1.