baber/WOPTO huggingface dataset:
Patent GB-304286-A (GB)
Abstract: 304,286. Felix, A. Jan. 18, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Uppers, protecting during lasting and other operations; insoles and socks; connecting uppers to insoles and soles. -An envelope a of thin sheet rubber or other elastic material is made to the shape of the foot and may be worn over the stocking inside a boot or shoe to protect stockings against wear or to cover and protect expensive shoes during or after manufacture, in which case the rubber may be transparent. The envelope may be placed over a shoe before the sole is attached and the laver of rubber on the sole may be deft by cutting away the upper part of the envelope at the edges of the sole and secured when the sole is attached. The envelope a may be formed by sewing together at their edges two sheets of material of the form shown, strengthening pieces a<1>, a<2> being placed where tearing is likely to occur.
Patent GB-722894-A (GB)
Title: Improvements in electric plug and socket connectors
IPC: H01R13/646
Filed: 1950-12-13
Abstract: 722,894. Two-part couplings. SHARDLOW ELECTRIC WIRES, Ltd., and JONES, P. Feb. 27, 1952 [Dec. 13, 1950], No. 30459/50. Class 38 (1). A plug connecter for a screened coaxial cable comprises a tubular metal socket-engaging part 4 insulatingly carrying a contact pin 10 and having an integral tapering tubular extension 7, and a separate metal sleeve 11. To connect a cable, the sleeve 11 is slid over the cable end, the outer protective cable cover is removed, the metal screening sheath is brought back, and the insulation cut away a certain distance to expose the core. The insulated core is passed through the extension 7 until the insulation abuts an insulating block 9 and the core enters the pin 10 wherein it is soldered. This action causes the screening sheath to ride up over the extension 7 so that when the sleeve 11 is finally screwed to the part 4 the sheath is jammed between the extension 7 and the interior of the sleeve 11. A socket connector for the plug comprises a metal sleeve 13 split at 18 and having a pair of lugs 14 whereby it is fixed to a base plate 15, an insulating block 20 being clamped therebetween. The block 20 carries a socket contact 21 and an integral terminal stub 22. On insertion of the plug the. sleeve 13 is forced open by the part 4, but is restrained by a thin sleeve 17 retained by a circlip 19. The socket connector forms the subject of Specification 722,990.
Patent GB-842619-A (GB)
Title: Improvements in or relating to refractory articles
IPC: C04B35/573
Filed: 1956-10-08
Abstract: <PICT:0842619/III/1> A refractory body consisting of cubic silicon carbide, or of a granular refractory filler (free from boron nitride) held together with a cubic silicon carbide bond, is prepared by moulding a mixture of finely divided silicon, with a granular refractory filler and/or a temporary binder, and firing the moulded shape in a carbonaceous atmosphere for a sufficient time to convert the silicon to silicon carbide.  Firing is at 1,200-1400 DEG C. for a few minutes to a fraction of an hour, and preferred conditions are raising the temperature at 200 DEG /min. to 1,350 DEG C. in a CO atmosphere and maintaining at the maximum for 15 mins., although methane is also referred to as a suitable atmosphere.  Fillers may be hexagonal SiC, alumina, mullite, kyanite, or clay. Temporary binders may be resins, dextrine, lignone, bentonite, or stearates.  By the method refractory bodies in combination with metal supporting or reinforcing members can be fired in situ without detriment to the metal, so that rocket motor chambers can be made having refractory lining 11 in steel shell or casing 10. In Examples:- (1) nozzles are made by moulding a mixture of SiC, Si, lignone, and bentonite gel at 50,000 lbs./sq. inch drying the moulded bodies at 200 DEG F. and firing at 1,350 DEG C. in CO, (2) bars are moulded from a mixture of fused alumina, Si, powdered phenolic resin, calcium, and butyl, stearates, at 20,000 lbs./sq. inch, dried and fired as in (1), (3) the mixture of (1) is tamped into a steel tube to form a lining, and the resulting composite body is dried and fired at 1,350 DEG C. while passing CO through the tube to make rocket motors.  Specifications 632,247, 742,325 and 786,005 are referred to.
Patent GB-1088437-A (GB)
Title: Improvements relating to laser range finders
Inventor: WINTER HERMANUS GERARDUS DE
IPC: G01S17/86
Filed: 1966-07-07
Abstract: 1,088,437. Photo-electric distance measurement. OPTISCHE INDUSTRIE " DE OUDE DELFT," N.V. July 7, 1966, No. 30572/66. Heading H4D. In a pulse-echo laser range finder a portion of the transmitted beam is diffused on to the receiver's optical system and thereby on to the receiving photo-electric detector. For adjusting the intensity of the portion the angle of a diffusing surface is adjustable. In the embodiment the laser comprises a ruby rod 8 optically pumped by a helical flash tube 9, high-energy pulses of infra-red radiation being emitted by means of a rotating prism 10 (Q-switching). The reflected energy passes via objective 4, dichroic surface 14, prism 15, narrow-band filter 16 and a small aperture 17 to a photo-multiplier tube 18. Eye-piece 6 permits visual observation of the field of view. To derive an initial pulse for time measurement a sample of the laser beam is coupled to tube 18 by a rod 19 which is mounted for rotation about its own axis, Fig. 2 (not shown). Both end surfaces of rod 19 are at 45 degrees to its axis, one surface being optically flat and the other rendered diffusive e.g. by grinding. Radiation scattering in the forward direction is avoided in military applications. Prior art arrangements utilizing a separate photo-cell for the zero timing pulse generation and a small mirror or wire grid scatterer are mentioned.
Patent GB-1200903-A (GB)
Title: Developer compositions
Inventor: MILLER HOWARD ANTHONY
IPC: G03G9/113
Filed: 1967-07-04
Abstract: 1,200,903. Electrostatographic developers. G.F.C. SELBY-LOWNDES. July 4, 1967, No.30659/67. Heading G2H. [Also in Division H1]. Electrostatographic developer comprises (1) carrier particles formed from a matrix of magnetic particles, electrical conductor particles and a binder, the magnetic particles having a maximum dimension less than 20% of that of the carrier particles, and (2) a toner. The carrier particles may be shaped and preferably contain an iron oxide, soft iron and/or a ferromagnetic alloy containing iron as the magnetic component, carbon as the conductor, a vinyl, styrene, acrylate, methacrylate or alkyl polymer, optionally produced from the monomer in situ, as binder, and optionally a surfactant. The toner may be 0À05-5Á particles of polystyrene pigmented with carbon black and/or black dyes.
Patent GB-519955-A (GB)
Title: Improvements in or relating to kerf cleaners or gummers for use with coal-cutting machines
IPC: E21C35/20
Filed: 1938-10-24
Abstract: 519,955. Coal-cutting machines. BRITISH JEFFREY-DIAMOND, Ltd., and SAVILLE, A. Y. Oct. 24, 1928, No. 30711, [Class 68 (i)] Means for moving cuttings away from the cutter chain of a coal-cutting machine comprises a plurality of blades or the like rotatable about a common axis and means whereby, during each revolution, the effective area of each blade is varied between approximately zero and a given maximum, the maximum effective area being attained when the blade is nearest the cutter chain. A unit 10 is detachably secured to the machine frame by bolts 12 and includes a worm 21 with a jaw clutch member 15 adapted to engage a spring-pressed clutch member 16 splined to a bevel 17 driven by the crownwheel of the machine. The worm 21, through worm wheel 22, drives a cowl 26 with slotted trunnions 32 in its wall; blades 31 are independently mounted on a shaft 30 offset from the axis of the cowl, each blade passing through one of the trunnions whereby the blades are rotated by the cowl and during rotation reciprocate relatively to the trunnions. A side guard 34 is removably fixed to one side of the unit by hook 35 and pin 36 to prevent return of cuttings a guide chute 38 is similarly fixed to the other side. Apertures 39 in the base plate allow escape of dust.
Patent GB-903823-A (GB)
Title: Renewable coatings for baths
IPC: B29C63/00
Filed: 1959-09-09
Abstract: A preformed coating designed and moulded to fit inside baths is made of thermoplastic or thermosetting material, or of compressed fibres or pulp covered by, impregnated with or varnished with a synthetic resin such as a phenolic or melamine resin.  The coating may have ridges or pimples formed on it to assist in anchoring it to the bath: it may have snap-over edges, soap holders and holes for taps and waste moulded or formed in it.
Patent GB-1145539-A (GB)
Title: Carrying out electrochemical reactions
Inventor: BECK FRITZ
IPC: C25B3/25
Filed: 1966-07-08
Abstract: 1,145,539. Electrolytic cell for producing organic compounds. BADISCHE ANILIN - & SODA - FABRIK A.G. July 8, 1966 [July 9, 1965; Jan.13, 1966], No.30712/66. Heading C7B. Apparatus for performing electro-chemical reactions of organic compounds in a flowing electrolyte, particularly the hydrodimerization of acrylonitrile to adiponitrile, comprises at least one uniformly liquid-permeable electrode pair 1a, b in which the electrodes are spaced less than 1 mm. apart, preferably separated by a liquid-permeable insulator 22, e.g. porous glass fibre cloth or paper, or porous plastic sheeting or ceramics. Electrolyte may be supplied and withdrawn, preferably recycled through a heat exchanger, to enable it to flow through the electrode pair(s). Pulsations may be imparted to the electrolyte and/or the electrode pair(s), e.g. by securing the electrode support and connection 4 to a vibrator 23. Current may be supplied through metal sleeves 2 pressed coaxially into plastic spoked-wheel shaped members 3. The electrodes may be made of metal or wire cloth, screens, expanded metal or sintered articles. Cathodes may be composed of Cu, brass or iron wire coated with Pb, Cd, Hg, Hg-Pb, Pb-Th, Hg-Ag, or Zn, Cu, Pt, Pd, Ni or graphite activated with Pt; anodes may be composed of metal or wire cloth or expanded metal support of Pt, Ni, Ti, or Ta coated with Ni or Pt with a coating of PbO 2  or Tl 2  O 3  , Pt, Pt-Ir, Pt-Rh, Ni, Fe, alloy steel or graphite. For producing adiponitrile with some propionitrile, examples are given of electrolytes composed of 66-81À5% acrylonitrile, 5-15% methanol or 20 or 22À5% isopropanol or 20% dioxane or dimethyl formamide, 7 or 8% water, and 0À5 or 1% tetramethyl ammonium methyl (or p-totuene) sulphate; the pH is regulated by adding acetic acid and triethylamine through a dropping funnel 27, and the off gas pipe passes through a reflux condenser 28. A solution of monomethyl adipate in methanol, electrochemically reacted with sodium methylate, is condensed to dimethyl sebacate. The apparatus may be used for other organic electro-chemical reactions.
Patent GB-808761-A (GB)
Title: Improvements in or relating to apparatus for measuring attenuation at radio frequencies
Inventor: GALE FREDERICK HENRY
IPC: G01R27/28
Filed: 1954-10-26
Abstract: 808,761. Voltage; power measurement. ELECTRIC & MUSICAL INDUSTRIES Ltd. Oct. 25, 1955 [Oct. 26, 1954], No. 30799/54. Class 37. Apparatus for measuring attenuation at R.F. comprises a source of variable width square pulses of R.F. power fed through a waveguide containing a known attenuator to a powerresponsive termination, and means for inserting an unknown attenuation in the guide between the known attenuator and the termination; the pulse width being adjusted in each case for equal pulse power in the termination and the unknown attenuation being determined from the ratio of pulse widths. A klystron oscillator 4 supplies R.F. oscillations to a waveguide 1 containing a fixed known attenuation and into which a device 2 of unknown attenuation may be coupled. The output is dissipated in a load thermistor 8 matched by piston 12 and connected in a bridge 9 which is balanced for a known power level. The klystron is modulated between cathode 5 and cathode screen 6 by the output of a variable width square-wave generator 3, which may comprise a free-running 60 c.p.s. multivibrator whose differentiated output signals trigger a further multivibrator generating the output square-wave; whose pulse width is coarsely adjustable by switchable anode circuit coupling condensers of the first valve of the further multiplier; finely adjustable by a variable resistance in the grid circuit of the second valve thereof; and measurable by a device 11 comprising valves coupled in long-tailed pairs having a meter in one anode circuit and driven alternately conducting and non-conducting on successive reversals of the square-wave output; the indication of a meter in the anode of one of the valves being proportional to pulse width. Pulse width is varied for bridge balance first without and then with the inclusion of the unknown attenuation, and the ratio of the widths determines attenuation as a power loss. The pulse width meter may be calibrated in db. loss relative to the known fixed attenuation alternatively, pulse width is determinable by a waveform monitor.
Patent GB-1310959-A (GB)
Title: Integrating network using at least one dc amplifier
IPC: G06G7/186
Filed: 1970-06-26
Abstract: 1310959 Integrators IWASAKI ISUSHINKI KK 26 June 1970 [28 June 1969 (2) 13 May 1970 (4)] 31041/70 Heading G4G The effect of drift in the D.C. amplifier of an integrator is eliminated by providing a switchable feedback and memory circuit between the output and input of the integrator such that, when equilibrium has been attained with the feedback circuit connected and no applied input, a signal (- Vd) is applied to the integrator input, where Vd is the input voltage equivalent to the drift of the amplifier, and when the feedback circuit is subsequently opened to permit the application of a signal for integration to the integrator, the signal (-Vd) is maintained at the integrator input, to cancel out the effect of drift. As shown, the integrator formed by resistor 8, capacitor 9, and D.C. amplifier 11 of Fig. 2 is provided with a drift memory feedback circuit which includes a capacitor 14, field effect transistor 16 connected as a source follower, and a switch 13, such that, if switch 3 is in the position shown and switch 13 is closed, the input terminal 2 acquires the potential (- Vd) whereby, upon subsequent integration of an input signal with switch 13 open and switch 3 connected to terminal 1, the effect of amplifier drift is eliminated. The switch 3 may alternatively be connected between the integrator resistor 8 and the amplifier 11 (Fig. 3, not shown). To reduce the time required for the drift memory circuit to attain equilibrium after the closing of switch 13 and connection of switch 3 to terminal 4, the integrator capacitor 9 may, for this operation, be disconnected from the amplifier input or output. The circuit may be modified as shown in Fig. 4, to render it suitable for use with a preceding stage which includes an active network, by the use of a differential amplifier 11a in the integrator, and the replacement in the drift memory circuit of the field effect transistor 16 by a further D.C. amplifier 19. Modified integrators are described in which an additional D.C. amplifier is connected between switch 3 and resistor 8 of Fig. 4 (Fig. 6, not shown), or between the output of amplifier 11a and the output terminal 12 and the input to the drift memory circuit 20 (Fig. 11, not shown), or in both these positions (Fig. 15, not shown), the circuit of Fig. 4 being effective to eliminate the effect of drift in both amplifier 11a and in the additional amplifier or amplifiers. Use of the integrator in analogue to digital converters is described (Figs. 10, 13 and 16, not shown).
Patent GB-1412972-A (GB)
Title: Thermal insulation of storage vessels
IPC: F17C3/04
Filed: 1972-07-03
Abstract: 1412972 Thermal insulation IMPERIAL CHEMICAL INDUSTRIES Ltd 21 June 1973 [3 July 1972] 31044/72 Heading F2X A storage vessel is thermally insulated by covering it with insulating laminates each comprising an inner layer of a rigid synthetic plastics foam and an outer metal cladding sheet. First, a plurality of stud-and plate assemblies are prefabricated, each comprising a metal stud in an upstanding position upon a metal backing plate, and then each assembly is secured to a preselected spot on a vertical wall of the vessel by an adhesive, preferably an epoxy resin mix, so that the studs protrude horizontally from the vessel wall. Holes are provided in eah insulating laminate at preselected spots, each of which is selected so that it will be in registration with one of the studs. Each laminate is then mounted upon the vessel with its free foam face adjacent the vessel wall and with each stud protruding through one of the holes to the exterior of the cladding sheet, the free ends of the studs being secured by nuts. The free foam faces of the laminates may be secured to the vessel wall by an adhesive, preferably a rubber-based impacttype adhesive. In each laminate, the outer cladding sheet extends beyond one edge and one end of the foam layer to provide an edge-lap and an end-lap which enable a wall of laminates to be built up by lapping and jointing laminates edge-toedge and end-to-end. The outer cladding sheet is profiled in the form of alternating crests and troughs, the troughs being in immediate contact with the foam whereas the crests form open-ended channels upstanding from the foam. The holes in the cladding sheet are provided in the troughs. Adjacent laminates are secured together by ivets or screws in the crests, or angles of the crests, of the edge-laps and/or end-laps.
Patent GB-766732-A (GB)
Title: Process for purifying acrylic acid nitrile
Filed: 1954-10-27
Abstract: An aqueous solution of acrylonitrile containing divinylacetylene and, if desired, other byproducts from the synthesis of acrylonitrile, is freed from the divinyl-acetylene by bringing it into contact with a solid surface-active adsorption agent, the divinyl-acetylene being selectively adsorbed.  The aqueous solution may be that obtained by the absorbtion in water of the reaction gases from the synthesis of acrylonitrile from acetylene and hydrocyanic acid in the presence of a cuprous salt catalyst, which have been separated from said catalyst.  It is stated that inorganic or organic substances may be used as adsorbtion agents, surface active earths, aluminium oxide, active carbons and artificial resins being specifically mentioned. The process may be carried out by suspending the adsorption agent in the aqueous solution and, after shaking or stirring, filtering off the agent, but advantageously the aqueous solution is caused to flow through a column charged with the adsorption agent, which may be regenerated by heat or treatment with steam.  Examples in which active carbon and aluminium oxide are used as adsorption agents illustrate each of the above methods.  Specification 727,898 is referred to.
Patent GB-927358-A (GB)
Title: Clamping sleeves for mine gallery support sections
IPC: E21D11/22
Filed: 1959-09-11
Abstract: 927,358. Mine roof supports. M. VON LINSINGTON, [trading as BOCHUMER EISENHUTTE HEINTZMANN & CO.]. Sept. 11, 1959 [Sept. 13, 1958], No. 31115/59. Class 20 (2). [Also in Group XXV] Mine roof-support sections 1, 2 are secured together in overlapping, or in end-to-end relationship, by a clamping sleeve comprising parts 5, 6 bolted together in such a way that forces applied at the bolts on each side of the sections, are equalized. This is effected by the provision of an arcuate bearing surface, either on a separate member 15, or on one or both sleeve parts 9a, 10, Fig. 6. Washers with concave surfaces may be used on the bolts, which bolts, as shown in Fig. 6, may be connected by an integral stirrup. The lower sleeve part 6 may be arched as at 17 or need only abut the support sections at the side flanges 3 so as to allow limited movement of the sleeve parts in equalizing the forces on the bolts.
Patent GB-604004-A (GB)
Title: Improvements in and relating to machines for glazing the blades of knives and like articles of cutlery
IPC: B24B19/00
Filed: 1945-11-20
Abstract: 604,004. Grinding and polishing. KRAUSZ, N. Nov. 20, 1945, No. 31214. [Class 60] A machine for glazing knife blades and the like having a pair of glazing wheels mounted side by side in peripheral alignment, one wheel being movable towards the other so that the wheels contact either side of the knife blade is characterised by having the movable wheel mounted for oscillatory movement about a pivot and urged towards the other wheel by an adjustably weighted cantilever operating against an opposing pull exerted on the movable wheel, means being provided for locking the movable wheel in an inoperative position out of contact with its companion wheel. Pivoted on a main frame 10 at 11, 12 respectively are two platforms 13, 42 carrying at their upper ends glazing wheels 16, 43 and at their lower ends electric driving motors 22, 49. The wheel 43 is held against movement by a screw-threaded swivel arm 46 attached to the platform 42 and anchored to the main frame 10. Extending inwardly from the platform 13 is a fixed cantilever arm 23, with a weight 25, adjustable by a rack bar 26, and a fixed weight 24, which urges the wheel 16 towards the wheel 43 against the pull of a rope 30 attached to the lower end of the platform 13 and anchored to a footoperated lever 31. To withdraw the wheel 16 from the work the foot-operated lever 31 is depressed and locked in this position by a hand lever 38. The motor 49 on the platform 42 also drives a vertically reciprocating workholder 58.
Patent GB-648706-A (GB)
Title: Improvements in or relating to the distillation of hydrochloric acid
IPC: C01B7/07
Filed: 1947-11-26
Abstract: Anhydrous hydrogen chloride is produced by introducing hydrochloric acid into a moving column of lumps of anhydrous calcium chloride at an intermediate position between the ends of the column, withdrawing boiling aqueous calcium chloride solution at approximately 125 DEG C. from one end of the column, introducing the vapours evolved from the boiling solution into said end, and withdrawing anhydrous hydrogen chloride from the opposite end. Dilute hydrochloric acid is supplied through inlet 2 into tower 1 which is constructed of brick, resinous material, or steel lined with tile, and is supplied with lumps of anhydrous calcium chloride by hopper 12.  Aqueous calcium chloride solution collects in receiver 4 and is boiled at about 125 DEG  C. by communicating boiler 4a; the vapours evolved (steam <PICT:0648706/III/1> plus a minor amount of hydrogen chloride) being introduced into the base of the tower.  Anhydrous hydrogen chloride containing 0.3 to 0.2 per cent water is withdrawn at the top of the tower. Accumulated calcium chloride (50 per cent) solution is withdrawn from receiver 4, neutralized with lime or calcium carbonate in receptacle 6, and concentrated by spraying it into hot gas in tower 7, the liquid flow being regulated so as to obtain an approximately 70 per cent solution at the base.  Part of the neutralized solution may be completely dehydrated in rotating drum 8 which contains lumps of solid calcium chloride heated to about 400 DEG  C. by hot gases from furnace 10.  The recovered anhydrous calcium chloride is returned to the top of tower 1.  In an alternative method of operation, heater 4a is dispensed with and heat is supplied to the solution in receiver 4 by the direct introduction thereto of the hot 70 per cent solution from the base of tower 7.