baber/WOPTO huggingface dataset:
Patent GB-999246-A (GB)
Title: Improvements in or relating to processes for recovery of fluorine values as cryolitefrom waste products from the electrolytic production of aluminium
IPC: C01B7/19
Filed: 1961-07-31
Abstract: Fluorine values are recovered as cryolite from waste solids and gases obtained in the electrolytic production of aluminium by adding hydrofluoric acid obtained by the pyrohydrolysis of the solid residues to either (a) an acid solution obtained by washing the gases with water after removal of solid matter or (b) an alkaline solution obtained by washing the gases with sodium carbonate after removal of solid matter, and in both cases precipitating cryolite from the resulting mixture, in the case of method (a) by the addition of sodium aluminate and in the case of method (b) by the addition of aluminium sulphate.  The waste solids include particles removed from the waste gases by e.g. electrofilters, and scraping and cathodic residues from the cells.  Pyrohydrolysis is defined as attack by water at high temperature, e.g. about 1000 DEG  C., and is exemplified in Specification 925,119. Specification 900,790 also is referred to.
Patent GB-362997-A (GB)
Title: Improvements relating to slack adjusting devices for braking apparatus on railway and other vehicles
IPC: B61H15/00
Filed: 1930-09-17
Abstract: 362,997. Brakes. LE CLAIR, L. J., BRACKENBURY, A. G., and WESTING- HOUSE BRAKE & SAXBY SIGNAL CO., Ltd., 82, York Road, King's Cross, London. Sept. 17, 1930, No. 27758. [Class 103 (i).] Indicators, applications of ; compensating for wear. - In an automatic adjusting device for taking up slack in a brake rigging, the condition of the device due to wear is shown by a signal arm or other indicating member mounted on one of two parts of the device movable relatively to one another during adjustment, the arm being connected with the other part so as to be moved during adjustment. The slack adjuster comprises a screwed rod 1 mounted in a supporting member 3 and carrying a nut 4 adapted to be displaced axially along the rod 1 when the latter is rotated by mechanism 5. A member 6 attached to the nut 4 is pivotally connected to the brake rod 11 and is connected through a link 10 to the signal arm 9 or to a graduated dial quadrant for indicating when the adjuster should be reset. In a modification the signal arm is supported in a horizontal position by a fixed stop over which it slides as wear takes place until it hangs vertically. A second stop is provided for a reversed position of the adjuster. The edge or edges of the signal arm co-operating with the stop or stops may be in the form of a cam so that the arm moves to its extreme position before the maximum travel of the nut is completed.
Patent GB-170846-A (GB)
Title: Improvements in or relating to means for controlling fuel pumps for internal combustion engines
IPC: F02M59/34
Filed: 1921-10-20
Abstract: 170,846. Appelberg, C. Oct. 28, 1920, [Convention date]. Regulating delivery by opening suction valves; valve-gear.-In a fuel-pump for internal. combustion engines, the suction valve 3 is adapted to be closed during a portion of the delivery stroke by means of two independent members which are adjustable for the purpose of varying the movements of closing and opening the valve. In one form, the valve is controlled by two cams 11, 12 mounted on the pump shaft 7 and engaging two levers 15, 16, pivoted on arms 18, which are pivoted at 20 on the pump casing and can be adjusted by worm gearing 22. The lever 16 engages a lever 23 on which a shoulder on the valve rod 10 rests, and the lever 15 engages an extension of the valve rod through the lever 23. At the beginning of the delivery stroke, the cam 11 keeps the valve 3 open for a certain time, and towards the end of the stroke the cam 12 again opens it and keeps it open till the end of the suction stroke. By adjusting the levers 15, 16 relatively to the cams by means of the wormgearing 22, the amount of injection and the quantity of fuel injected may be varied. Instead of adjusting the levers, the cams may be angularly adjusted on the shaft for the same purpose, and the arm 12 may be loosely mounted on the shaft 7 and connected to the governor. In the Specification, as open to inspection under Sect. 91 (3) (a), the following modifications are described : the valve rod 10 rests on a lever pivoted on an adjustable eccentric, and this lever is operated by two eccentrically pivoted levers and connected by rods to the levers 15, 16 pivoted on an adjustable crank-arm. The moment of opening the valve may be varied by adjusting the eccentric pivot of one of the intermediate levers. In another form, the valve is controlled partly by a cam disc, and partly by a reciprocating member. The cam engages an eccentrically-pivoted lever connected by a rod to another eccentrically-pivoted lever engaging the valve rod. The latter lever is adapted to be actuated also by a lever pivoted on the rod of the piston-actuating eccentric and also on a rod which is eccentrically-pivoted on the pump casing. In another form, the valve is controlled by two reciprocating members, operated by the piston-rod of the pump, and adjustable by means of eccentric pivots to vary the operation of the valve. This subject-matter does not appear in the Specification as accepted.
Patent GB-1389267-A (GB)
Title: Method for treating glass fibres
IPC: C03C25/27
Filed: 1972-06-14
Abstract: 1389267 Improving adhesion; glass reinforced elastomers OWENS-CORNING FIBERGLAS CORP 14 June 1972 27882/72 Headings DIP and D1R A multiplicity of glass fibres are prepared for incorporation into and reinforcement of continuous phase elastomers by the steps of (a) coating said glass fibres with a first composition which upon subsequent drying or curing will hold said fibres apart; (b) impregnating said coated glass fibres with a second, elastomeric-based composition capable of reacting with or adhering to said continuous phase elastomer; and (c) gathering said fibres into bundles either between steps (a) and (b) or after both (a) and (b) has been accomplished; wherein the second composition is applied whilst said first composition is sufficiently fluid to permit intermixing of the two compositions so that at least a mechanical bond and in some cases also a chemical bond will be attained between them on drying and curing. The term fibres includes continuous filaments, strands of continuous filaments, staple fibres formed by high pressure steam or air directed at freshly extruded streams of molten glass and staple fibre or continuous filament yarns. The compositions may be applied by passing filaments over a pair of rollers or passing filaments or yarns through a pair of baths. Suitable first compositions include natural and synthetic rubber lattices, urethanes, polyamides (in suspension or produced by in situ reaction on the fibres) epoxides, polyesters, urea-formaldehyde, melamine formaldehyde and phenol-formaldehyde resins, epoxides plus diamines or polyamines, ethylene-propylene elastomers, vinyl pyridine-butadiene-styrene terpolymer a resorcinol formaldehyde latex, and epoxy adhesives. Suitable second compositions include vinyl pyridine, resorcinol formaldehyde latex and epoxy adhesives. The first composition may be solubilised by acid, e.g. an amine-expoxy resin, a polyethylene amine or an aminized polyester. The second composition is then preferably a base solubilised, e.g. a quaternized polyethylene amine or a polyester resin having excess carboxyl groups. Contact between the two resins causes mutual gelation. Alternatively the first composition is basic and the second acidic. Gamma-aminopropyltriethoxy silane or other organosilicon anchoring agent may be present but is not essential. The first coating may comprise 1 to 8% by weight of the glass, the second coating 3 to 12%. The total loading of first and second compositions may be less than 10% by weight of the glass if high modulus coatings (expoxy, polyester) are used.
Patent GB-1040218-A (GB)
Title: Improvements in thermo-electric cooling devices
IPC: H01L35/32
Filed: 1963-07-15
Abstract: 1,040,218. Thermoelectric devices. N. V. PHILIPS' GLOELAMPENFABRIEKEN. July 15, 1963 [July 18, 1962], No. 27934/63. Heading H1K. A thermo-electric cooler comprises a space to be cooled surrounded by thermal insulation through which there is a heat path to an external heat exchanger. The heat path includes a Peltier cooling block with a tapered coupling piece on one side of it with its smaller end adjacent the block. The block comprises a plurality of spaced-apart parallel elements alternately of different thermoelectric materials series-connected by junction pieces. On at least one side of the block the sum of the sections of the junction pieces divided by the sum of the section of the elements in a plane perpendicular to the length of the elements is equal to the spread factor which is # 1.5. In the refrigerator shown in Fig. 1 comprising a sponge plastic container 2, the thermocouple assembly 6 is insulated from the tapered heat conductors 7 and 8 communicating with the cold chamber 1 and cooling fins 9 respectively and is disposed near the surface of the insulation to facilitate maintenance, though in an alternative arrangement the assembly is in direct contact with the copper or aluminium walls 3 of the chamber. The cooling fins may be cooled by latent heat of fusion, by convection or by a forced flow of water or air or may be replaced by ducted members through which coolant is forced. The assembly may be constructed as shown in Fig. 4b with parallel rows of alternately P- and N- type bismuth telluride elements 41 interconnected by copper bridging members 42 which except for gaps necessary for insulation form continuous surfaces in contact with heat conductors 46 via insulating adhesive 47. The elements are uniformly spaced in chequer-board fashion but may alternatively be closed packed in widely spaced rows. In either case the arrangement has a spread factor of about 3. Expressions are derived in the Specification relating the efficiency of the arrangement to the spread factor and for determining the optimum spread factor which enables the minimum amount of thermoelectric material to be used to obtain a given performance. The dimensions and performance of typical systems are also discussed.
Patent GB-1395353-A (GB)
Title: Means for holding and contacting high temperature ceramic  resistors
IPC: H01H37/32
Filed: 1972-06-15
Abstract: 1395353 Supporting resistors DANFOSS AS 15 June 1972 [15 June 1971] 28021/72 Heading H1K [Also in Division H2] A ceramic resistor 2 suitable for operation at high temperature is held by resilient electrical contact members 24, 25, 26, 27 with a loose fit in an aperture in an insulating support-plate 19 held in grooves 15 and 16. The resilient contact members, allowing longitudinal expansion of the resistor, are connected to respective sockets on an associated plug member (Figs. 1, 2 and 3, not shown) and are disposed symmetrically about the longitudinal axis of the resistor. The frame is provided with openings to allow the passage of cooling air. In a separate embodiment (Figs. 5, 6 and 7, not shown), two resistors are held in respective support plates located in grooves 17 and 18, a central resilient contact member and respective rigid end connectors being provided to connect the resistors in parallel.
Patent GB-748380-A (GB)
Title: Improvements in or relating to levelling devices for lanterns
IPC: F21V21/00
Filed: 1953-10-12
Abstract: 748,380. Supporting lanterns. GENERAL ELECTRIC CO., Ltd., and MOUNDSON, M. H. Oct. 12, 1954 [Oet. 12, 1953], No. 28058/53. Class 75(3). In a levelling device for positioning a lantern 11 relative to a support (not shown), comprising a cup 1, an insert 2 within the cup having a portion 12 flaring towards the base of the cup and terminating in a circular annulus 13, four screws 8 spaced at 90 degree intervals around the cup and projecting therethrough into ongageilient with the flaring portion 12 of the insert to hold the circular annulus 13 in abutment with the inner surface of the cup and means for attaching the cup or the insert to the lantern 11 or the support the flaring portion 12 includes four flat surfaces 14 which are equally inclined to the axis of the insert and are so arranged that a plane through the insert at right angles to its. axis cuts the surfaces in two perpendicular pairs of parallel straight lines. The flaring portion 12 of the insert shown is formed by eight flat surfaces 14 so arranged that a section at right angles to the axis of the insert is a regular octagon. The cup has a screwed socket 4 for engaging with a spigot on the support and the insert has a screwed spigot 10. engaging with the lantern.
Patent GB-686869-A (GB)
Title: Improvements in or relating to photographic light-sensitive materials
Inventor: DICKINSON HAROLD OWEN
IPC: G03C1/34
Filed: 1950-11-16
Abstract: 686,869. Photographic emulsions. ILFORD, Ltd. Nov. 7, 1951 [Nov. 16, 1950], No. 28084/50. Addition to 648,184. Class 98 (ii). A photographic silver halide emulsion according to the parent Specification, containing a small,quantity of a fog-reducing compound of the general formula specified therein, also contains a sensitizing dye, e.g. a cyanine, pseudocyanine, carbocyanine, dicarbocyanine, tricarbocyanine, or merocyanine dye, such as those described in Specifications 424,559, 426,718, 428,359, 447,038, [all in Group IV], 457,335, 485,110, 487,051, 489,335, 544,645, 553,144, 557,549, 595,784 and 610,569.
Patent GB-504118-A (GB)
Title: Improvements in process and apparatus of producing an anhydrous soap and glycerine
IPC: C11D13/04
Filed: 1937-10-15
Abstract: 504,118. Making soap; soap powders. DEHN, F. B. (Lorenz Patents Corporation) Oct. 15, 1937, No. 28135. [Class 91] Soap and glycerine are continuously produced by spraying a fat or oil and alkali into a stream of superheated steam maintained above the melting point of anhydrous, soap, the reaction being effected in a retort at subatmospheric pressure, whereupon the volatile products and soap are removed. An apparatus consists of two chambers 1, 2 connected through a rotary fluid-tight feed hopper 19. The chambers 1, 2 are provided with jackets 9, 12, 16, through which heated mineral oil passes. The raw materials are fed in calculated amounts to the chamber 1 at about 150 to 300‹ C:, through pipes 34 (fat) 35 (alkali), 36 (fillers), 37 (superheated steam), which communicate with annular manifolds provided with jets 38 ... 41. The jets are inclined from a radial position whereby a thorough mixing and a swirling motion is imparted to the sprayed materials. Volatile products pass through a perforated diaphragm 27 to a vacuum condenser through a pipe 26. The rotary hopper 19 is provided with pockets 24, whereby the soap particles are fed on to a rotor 50 provided with curved deflector plates mounted at the top of the chamber 2, which is filled with inert gas such as nitrogen, carbon dioxide or steam at a temperature below the melting point of the soap. The soap is thereby separated into particles which harden as they fall to the bottom of the chamber. They are then removed by a screw conveyer 53. If desired a solid hydrated soap is made by admitting a measured amount of water and fillers through the pipe 60, whereupon the anhydrous soap particles and water are mixed by an agitator 51, and the resulting molten soap is drawn off through a pipe 64. Specification 504,117 is referred to.
Patent GB-730862-A (GB)
Title: Improvements in or relating to vacuum discharge tubes
IPC: H01J19/42
Filed: 1951-11-30
Abstract: 730,862. Discharge apparatus. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Nov. 30, 1951 [Dec. 4, 1950], No. 28156/51. Class 39 (1). A high-vacuum rectifier tube comprising an insulator on opposite sides of which are disposed in intimate contact therewith a coldcathode electrode and an anode electrode is characterized in that at least one line of contact between the cathode electrode and the insulator surface is opposite the anode electrode, the anode electrode and the insulator extending on either side of said line or lines of contact. In one form, Fig. 3, the tube comprises a rod anode 2 surrounded by a glass layer 3 on which is mounted a cathode in the form of a plurality of metal rings 4, this arrangement being surrounded by an auxiliary electrode 5 which may function as an auxiliary anode or as a control grid. The construction is such that the field intensity on a line of contact between the cathode and the insulator surface is higher than that on a contact line between the anode and the insulator surface so if the potential difference between the cathode and anode is high enough the cathode gives a field emission along the line of contact with the insulator surface. The electrons emitted, in attempting to follow the lines of force through the insulator, strike the insulator and thus give rise to secondary electrons which themselves, on their way to the anode, give rise to further secondary electrons from the insulator surface. This action proceeds until the anode surface, projecting beyond the insulator, is reached. If the electrode 5 is made an auxiliary anode, the electrons divide up between the main and auxiliary anodes according to the potential which is applied to these electrodes. In a simplified construction, the auxiliary electrode 5 is omitted and the cathode is a single metal ring which in a modified construction is extended together with the glass layer 3 to enclose the free end of the rod anode. In the construction shown in Fig. 5 the cathode is in the form of a plurality of strips 6 joined at one end by a ring. In a further construction the cathode is a wire helix. In the planar arrangement shown in Fig. 7 the cathode comprises a plurality of parallel strips 11 joined at one end and separated by a glass plate 10 from one side of a plate anode 9 which has a similar cathode and glass plate mounted on its other side.
Patent GB-322575-A (GB)
Title: Silencers for internal combustion engines
IPC: F01N1/14
Filed: 1928-10-02
Abstract: 322,575. Dallinson, G. J. Oct. 2, 1928. Exhaust silencers. - The silencer is secured by a clip e<3> to the exhaust pipe e<2>, and comprises an exhaust chamber a and an air chamber c arranged horizontally, and parallel to one another. The air chamber is provided with an inlet valve g loaded by a light spring g<3> and controlling ducts g<4> in a plug g<5>. The exhaust chamber a is provided with baffles a<2> mounted on a rod a<3> carried by supports a<4>, and at its outlet end has an adjustable perforated plug f<2> for varying the area of ports in a plug f. The chambers a, c are connected by a strong clip e<4>. The valve g is adapted to be opened, to admit air, by the suction in the cylinder on the charging stroke, the exhaust valve being held open for a small portion of this stroke as is well known in motor-cycle practice. In a modification, the beat valve g is replaced by a flap valve.
Patent GB-1411742-A (GB)
Title: Electrical overload detection apparatus
IPC: H02H1/04
Filed: 1971-06-16
Abstract: 1411742 Protective arrangements ELECTRIC ACTUATOR CO Ltd 18 Sept 1972 [16 June 1971] 28325/71 Heading H2K A protective arrangement, e.g. for an electric motor, comprises means TR3, TR5 for comparing a voltage signal proportional to the current to the protected A.C. load with a reference voltage, a transistor TR4 receiving pulses when the voltage signal instantaneously exceeds the reference voltage and causing a supply of current to a capacitor C3 in response to these pulses, and a further transistor TR6 which provides an output signal when the capacitor C3 has been charged by a pulse of sufficiently long duration due to overload conditions. A feed-back circuit D3, R16 from the transistor TR6 to the transistor TR4 causes these transistors to remain conducting after the overload condition has ceased. When the transistor TR6 conducts, the output signal causes a transistor TR9 to conduct so cutting off a transistor TR10 and de-energizing a relay coil RE1. Restarting is effected by closing a switch S1 to cause a transistor TK1 to conduct so causing a transistor TR7 to cease conducting due to diversion of its base current to a capacitor C2 for a short period, the circuit through the transistor TR6 being interrupted for this period.
Patent GB-882280-A (GB)
Title: Production of alpha-olefins
IPC: C07C2/88
Filed: 1960-08-16
Abstract: Alpha-olefins are obtained by reacting ethylene with an alkylaluminium compound to form a growth product and effecting displacement with at least 3 mols of ethylene per mol of growth product at 50 DEG C.-150 DEG C. in the presence of a reduction catalyst and an acetylenic alcohol.  The growth reaction is conventional starting with triethyl, tripropyl, tributyl or trisobutyl aluminium, diethyl aluminium hydride or ethyl aluminium hydride at 65 DEG C.-150 DEG C. and 200-5,000 p.s.i.g.  In the displacement the catalyst may be nickel cobalt, palladium or certain iron compounds, e.g. Raney nickel, finely divided nickel, nickel acetylacetonate or nickel naphthanate, in an amount of 0.001%-0.1% of the growth product.  The alcohol may be propargyl alcohol, 2-methyl-3-butyne-2-ol, butyne diol or 1-butyne-1-ol in an amount of 25-300 parts per part of catalyst and inhibits isomerisation and reverse displacement.  Generally the pressure will be 50-100 atmospheres and the reaction time 1-30 minutes.
Patent GB-504037-A (GB)
Title: Improvements relating to razor strops
IPC: B24D15/08
Filed: 1937-10-18
Abstract: 504,037. Strops. HITCHIN, E. E. Oct. 18, 1937, No. 28357. [Class 60] A razor strop comprises a leather &c. strap A folded at X over a bar E, to form two stropping members, the front member B also having its lower end turned back at R and stitched to the two members to form a loop to receive a handle T of undulating form to accommodate the fingers of the user. The front member B is formed with a series of perforations or depressions D and the rear member is left plain. The bar E is mounted in a member F formed of stampings G, which also provide a housing J for a coil spring K engaged at its inner end by. a plate L carried by a pin N to which is attached a hook O ; in use the strop is pulled so as to tension the spring.
Patent GB-429975-A (GB)
Title: Improvements in keys for securing railway rails to rail chairs
IPC: E01B9/58
Filed: 1934-10-04
Abstract: 429,975. Keys for railway rails. TURTON, PLATTS, & CO., Ltd., G., and COWEN, J. C., Meadow Hall Road, Wincobank, Sheffield. Oct. 4, 1934, No. 28467. [Class 104 (ii)] In a key of the kind formed by bending resilient metal plate into three or more loops with the free ends of the plate completing a loop and one loop being re-entrant and at least two others tapering longitudinally of the key, the ends a are adapted, when the key is in position and initially stressed, to contact with each other at the outside of the figure and the remaining boundaries of the loops are remote from contact with one another. In another form, the ends a are inturned towards the re-entrant loop b.