baber/WOPTO huggingface dataset:
Patent GB-408431-A (GB)
Title: Improvements in and relating to electric welding machines
IPC: B23K11/25
Filed: 1933-02-17
Abstract: 408,431. Electric resistance &c. welding. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitats- Ges. ; 2, Friedrich-Karl Ufer, Berlin.) Feb. 17, 1933, No. 4956. Convention date, Feb. 18, 1932. [Class 39 (iii).] In butt flash welding wherein a relay is provided for stopping or reversing the drive or in resistance welding wherein a relay is provided for switching off the current the relay 7 is arranged in a circuit influenced by mutually opposed voltages derived from fixed tappings on the primary 1 and from the secondary 3 of the transformer. The primary and secondary sides may be coupled inductively by coils 5, 6 and the relay 7 may be in the primary or secondary side. The coils 5, 6 may be arranged on the main transformer core. The inductive coupling 5, 6 may be replaced by a capacity or direct coupling.
Patent GB-208666-A (GB)
Title: Improvements in weighing instruments
IPC: G01G1/26
Filed: 1923-02-20
Abstract: 208,666. Caldwell, C. W. Feb. 20, 1923. Steelyard apparatus.-A weighing instrument comprising a pivoted beam and a poise movable along, the beam by a screw is provided on the beam with a dial having balanced weight-indicating hands connected to the poise by balanced transmission mechanism. The beam 2 is mounted on knife-edges 3 and carries a screw 9 provided at the ends with finger knobs 14. The screw passes through a nut 10 and is thus caused to move longitudinally when rotated. A heavy disc 15 fixed to the screw bears oz. graduations 20 and registers lbs. graduations 18 on a fixed plate 16. One end of the screw carries a gear wheel 24 which drives the gearing of an indicating dial 22 carried on the weigh beam at the customer's side of the machine. The dial is provided with two balanced hands indicating ozs. and lbs. Lost motion in the gearing is taken up by means of a spring 31.
Patent GB-1039741-A (GB)
Title: A method for electroplating objects with successive deposits of bright nickel and chromium
IPC: C25D15/02
Filed: 1963-02-07
Abstract: In electroplating an object with successive deposits of bright nickel and chromium, an intermediate metal layer of an average thickness of not substantially more than 2 m  consisting of nickel, silver, or a metal or alloy which occupies a position between these metals in the electrochemical series, is electrodeposited from a bath containing also a solid non- or less-conducting material in suspension in the bath. The solid non- or less-conducting material preferably comprises particles of diameter not greater than 5m . The intermediate layer may be produced from a bright nickel sulphate-chloride bath to which is added colloidal silica, SiC, or BaSO4, AgCl or NiS formed by addition of Ba Cl2, Ag2CO3, or H2S respectively, or from a cyanide silver bath to which is added alumina or Ag2S formed by addition of K2S. The solid particles may be kept in suspension by stirring or if organic wetting agents are not present by air agitation. Reference is also made to the use of hydroxides of Fe, In, Al and Th but PbCrO4, PbS and HgS are mentioned as less suitable. Examples of bright nickel baths referred to are sulphate or sulphate-chloride baths buffered with boric acid and containing saccharin and butin-diol together with sodium lauryl sulphate, or formic acid and formaldehyde with cobalt as a metal brightener. If a bright nickel bath is used for the intermediate layer, adhesion to the original bright nickel layer may be improved either by first immersing the bright nickel plated object in an aqueous sulphuric acid solution of KI or by adding fluoride or fluoborate to the intermediate layer bath.
Patent GB-869008-A (GB)
Title: Light metal piston for internal combustion engines
IPC: F02F3/04
Filed: 1958-02-17
Abstract: 869,008. Pistons. MAHLE, H. Feb. 17, 1958 [March 6, 1957], No. 5045/58. Class 122 (1). In a light-metal piston for internal-combustion engines comprising a head 1 and an integral continuous skirt 2 fitted with expansioncontrolling inserts 3 of a metal having a lower coefficient of thermal expansion than the lightmetal, the axial length of the inserts is at least ten times their radial thickness and the walls between the bases of the ring grooves and the inner surface of the ring section in the part 4 between the plane a-a of the bottom flange of the lowermost ring groove 5 and a parallel plane b-b nearer to the piston head 1 by at least six times the thickness of the inserts 3, here an average radial thickness of more than 2.7% of the maximum diameter of the skirt but less than three times the thickness of the inserts. The inner surface of the ring section in the part 4 may be frusto-conical as in Fig. 1, when the maximum thickness y should be not more than four times the thickness of the inserts, or cylindrical as in Fig. 2. The inserts may have a radial thickness between 1.5 and 4%, the maximum skirt diameter. Specification 817,86P is referred to.
Patent GB-1465901-A (GB)
Title: Power assisted vehicle steering
IPC: B62D5/06
Filed: 1973-02-01
Abstract: 1465901 Power-assisted steering mechanism CAM GEARS Ltd 1 Feb 1974 [1 Feb 1973] 5048/73 Heading B7H In a power-assisted steering system comprising relatively-rotatable valve elements 9, 11 connected by a torsion bar 10, detent balls 13 located in bores 13A in the valve element 9 are urged by fluid pressure which varies in dependence on the speed of the vehicle into engagement with recesses 14 formed in an enlarged intermediate portion of the torsion bar 10, so that the effective length of the torsion bar is reduced as the speed increases with a corresponding reduction of the power assistance provided. The detent balls 13 are subjected to the fluid pressure in a chamber 8 connected through a pressure line 5 to a pump 2 which is driven from the propeller shaft of the vehicle and is shortcircuited by a line 3 including a driver-adjustable restriction 4. The pressure fluid acting on the detent balls 13 may alternatively be supplied through a speed-sensitive governor from an engine-driven power-assistance pump. The recesses 14 in the torsion bar may be so shaped that the resilience of the bar is reduced gradually as the speed increases, and there may be more that one set of detent balls coming into action sequentially. In another embodiment the detent balls are located in the outer valve element and engage recesses in the inner valve element so the resilience of the bar is completely eliminated and there is no power-assistance above a predetermined speed.
Patent GB-125701-A (GB)
Title: Improvements in Coupe or Limousine Tops for Light Motor or Cycle Cars.
Inventor: HAGGARD LESTER
IPC: B60J7/16
Filed: 1918-03-23
Abstract: 125,701. Haggard, L., and Walker, K. R. March 23. 1918. Hoods, opening tops, and weather-screens.-A top b for light motor or cycle cars is hinged at a to the car body, access to the car being gained by raising the top about the hinge. The hinge-pin can be withdrawn for detaching the top which is preferably of wood or aluminium with a >-shaped front comprising a pair of celluloid or other windows d.
Patent GB-809033-A (GB)
Title: Method of and apparatus for producing thread packages with a predetermined thread tension
IPC: B65H59/10
Filed: 1956-02-20
Abstract: 809,033. Thread tensioning devices; indicating devices. VEREINGTE GLANZSTOFF-FABRIKEN, A. G. Feb. 20, 1956 [Feb. 18, 1955; June 21, 1955], No. 5204/56. Classes 120(2) and 120(3) Thread is wound with a predetermined tension at an adjustable winding speed by giving the predetermined tension to a loop of thread before a winding bobbin by means of a loaded member which compensates for variations in the size of the loop by varying the speed of rotation of a thread guiding roller feeding thread into the loop. As shown in Fig. 1 a member 4, pivoted at 5 is loaded by a spring 6, one end holding the thread and the other oscillating between contacts 14, 15 which when the member 4 touches either of them causes a change in an infinitely variable gear 16 to vary the speed of a roller 3 feeding thread into the loop. Fig. 3 shows the mechanism represented at 13 and 16 in Fig. 1. When the member 4 contacts either 14 or 15 a plunger is lifted, and the motion is transmitted by a rocking lever and bell crank lever clamped on a nut 31 so that the nut 31 rotates on a screwthread 29 of a tube 26 to alter the position of a friction wheel 23 on a driving wheel 22 of a friction gear which governs the speed of the guiding roller 3. A pointer 27 indicates the position of the wheel 23. Alternatively, the gear 16 may be controlled by known mechanical, pneumatic, hydraulic, electric or magnetic means responsive to the contact made at 14 or 15 by the member 4. The tension given to the loop may be constant or vary with the growth of the package, the latter being effected in the embodiment shown by gears on the nut 31 and shaft of the member 4 increasing or decreasing the torsion in a spring on the shaft of the member 4.
Patent GB-768543-A (GB)
Title: Improvements in and relating to the preparation of welding fluxes
IPC: B23K35/36
Filed: 1953-02-25
Abstract: Welding fluxes are prepared by mixing a fluxing component with an additive and heating the mixture to 900-1100 DEG C., the fluxing component having a melting point above 1600 DEG C., being such as not to dissolve in or react with the additive or to vitrify at the welding temperature, and forming 20-80 per cent of the mixture, and the additive having a melting point below 1600 DEG C.  An additive having a melting point above 1600 DEG C. may also be present.  The fluxing component may be alumina, tridymite, cristobalite, zirconia, beryllia, calcium oxide or mullite and the additive may be a melting point depressant, a deoxidizing agent or an alloying ingredient or may serve to alter the viscosity or surface tension: examples of additives are manganese compounds, manganese alloys, aluminium, magnesium, elemental or alloyed silicon, nickel, cobalt, titanium, zirconium, vanadium, chromium, molybdenum, niobium, fluorides of calcium, sodium, lithium and potassium, cryolite, borides of calcium, magnesium and iron, carbon and borax.  Heating may be effected in an oxidizing, neutral or reducing atmosphere.  The flux may be used as a powder or as a coating or core for rods and wire coils.
Patent GB-590086-A (GB)
Title: Multiple connections for the terminals of electrical apparatus
IPC: B23K11/26
Filed: 1945-03-02
Abstract: 590,086. Cable and wire couplings. STANDARD TELEPHONES & CABLES. Ltd. March 2, 1945, No. 5244. Convention date. March 13, 1944. [Class 38 (i)] [Also in Group XXII] A unit for making multiple connections between the terminals of electrical apparatus comprises connector straps a and tie portions b stamped from sheet metal, the straps having enlarged ends adapted to register with the binding posts d<1> of the terminal inserts d. The connector unit is clamped in position on the terminal block c between resilient electrodes g and co-acting grounding contacts i. The straps may be welded to the terminals d<1> simultaneously, but preferably, the operations are performed consecutively by a circuit means comprising a condenser discharge source, connected via the distributor j, in turn to each of the electrodes 1 ... 5<1> as the arm j is rotated over the corresponding distributor contacts. and the circuit is closed to ground, via the coutacts i, leads K, K', and a closed contact 14. Further rotation of the distributor, bridges first'the contacts 9-9<1>, and energizes the relay 13, to open the contact 14 and thereby remove the ground connection from the lead K and the straps 2-2<1>, 4-4<1>. The tie portions are then fused by rotation of J over contacts 8, 10 and 8, 10<1>, whereby a circuit to ground is made over the Leads 16, K<1>, and causes a heavy current to flow in turn via the connector straps 2-2<1>, 4-4<1>, to the adjacent tie portions. The amplitude of the fusing current is increased by the short-circuiting of the resistance o through the lead 18, but this increase is unnecessary if the ties are sufficiently thin.
Patent GB-229863-A (GB)
Title: Improvements in and relating to carbonising plant and particularly to ascension pipes for gas retorts, coke ovens and the like
IPC: C10B27/06
Filed: 1924-02-29
Abstract: 229,863. Mackenzie, M., Sylvester, J., and Outwin, E. Feb. 29, 1924. Ascension pipes comprise a number of sections 1 each provided with a number of openings 3 in its length for cleaning purposes. The openings are preferably staggered and inclined to the axis of the pipe, and are temporarily sealed by means of fire-clay or by plugs 4 fitting into bosses 2.
Patent GB-577233-A (GB)
Title: Improvements in or relating to a process for obtaining transparent effects on regenerated cellulose staple fibre or fabrics containing regenerated cellullose stanle fibre
IPC: D06M11/55
Filed: 1944-03-21
Abstract: Transparent effects are produced on staple fibres of regenerated cellulose or fabrics containing them, by subjecting the materials to a treatment with an alkaline swelling agent of at least 15 DEG B<\>ae strength at a temperature between -5 DEG  and 25 DEG  C., or sulphuric acid of 40-52 DEG  B<\>ae strength at a temperature between -5 DEG  and 20 DEG  C., before or after treatment with an alkaline reagent of at least mercerizing strength, i.e. at least 15 DEG B<\>ae at temperatures of at least 25 DEG  C., each treatment being of at least 5 seconds duration.  Patterned transparent effects may be obtained by printing with suitable reserves.  The material may also be printed before or during any stage of the process with a pigment and a reserving or non-reserving pigment carrier.  In an example, a regenerated cellulose staple fibre fabric is treated for 8 seconds with sulphuric acid of 45 DEG  B<\>ae at 15 DEG  C., rinsed, neutralized and then treated for 8 seconds with soda solution of 30 DEG  B<\>ae at 50 DEG  C.  In a second example, a staple fibre fabric is treated for 8 seconds with sulphuric acid of 46 DEG  B<\>ae at 0 DEG  C., rinsed, neutralized and treated while stretched with soda solution of 36 DEG  B<\>ae at 50 DEG  C. for 8 seconds.  It is again rinsed, neutralized and tentered, and treated for 8 seconds with sulphuric acid of 47 DEG  B<\>ae at 0 DEG  C. for 8 seconds, and finally rinsed, neutralized and treated for another 8 seconds with soda of 30 DEG  B<\>ae at 50 DEG  C.  A further example is given in which a fabric consisting of a mixed cotton and staple fibre yarn is treated with sulphuric acid of 47 DEG  B<\>ae at 15 DEG  C. for 8 seconds, with soda solution of 30 DEG  B<\>ae at 50 DEG  C. for 8 seconds, with sulphuric acid of 50 DEG  B<\>ae at 15 DEG  C. for 10 seconds, and finally with alkali of 30 DEG  B<\>ae at 50 DEG  C. for 10 seconds.  In a fourth example, a mixed fabric consisting of cotton yarns and staple fibre yarns is printed with nitrocellulose, camphor and titanium dioxide, and then treated as in the previous example. The fabric may be dyed before or after processing.  In a final example, a fabric of mixed cotton and staple fibre yarns is printed with a reserve composed of gum and treated firstly with sulphuric acid as in the first example, and then with hot alkali without tension.  A crape effect is produced by contraction of the non-transparent parts of the fabric.
Patent GB-739645-A (GB)
Title: Improvements in or relating to dispenser cathodes and methods of manufacturing such cathodes
IPC: H01J9/04
Filed: 1954-02-23
Abstract: 739,645. Cathode materials and processing. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 23, 1954 [Feb. 26, 1953], No. 5296/54. Drawings to Specification. Class 39 (1). In a dispenser cathode, the supply of emissive material contained in the internal cavity consists of a compact sintered mass of alkaline earth oxide, so prepared before closure of the cavity. This is formed by compressing the carbonate, such as barium-strontium carbonate, and then sintering. The sintering step may be carried out separately, in a platinum crucible in a vacuum oven for 5 minutes at 1500 C., or in place in the cathode body before finally closing the cavity, for 1 hour at 1000 C. and then 5 minutes at 1500 C. For the cylindrical type of cathode, the mass of carbonate may be preformed as a cylinder, or sectors thereof.
Patent GB-708770-A (GB)
Title: Process for reduction of iron oxides
IPC: C21C5/04
Filed: 1952-02-29
Abstract: A process for the reduction of iron oxides, e.g. oxidic iron ore, comprises feeding briquettes of the oxides and the fuel required for the reduction in at one end of an open-hearth furnace having a charge of carbon-containing iron alloy and withdrawing the slag formed at the other end.  The briquettes are preferably supplied at the burner end and the slag removed at the flue end.  Air, which may be pre-heated, or air enriched with oxygen, is blown into the furnace to burn the carbon monoxide produced by the reduction and the volatile material from the fuel, the furnace burners being used only for initial heating and for regulation of the furnace temperature.  The briquettes may be supplied at the longer side of a reverberatory furnace where they pile up and form a trough containing the melt of alloy and slag. In this case, the floor of the furnace at the charging point is disposed so high that only a shallow melt forms. Moreover the oxygen-containing gases are then blown directly through the briquette layer.  Any sulphur taken up by the alloy from the fuel may be absorbed by lime in the slag or removed by blowing soda, burnt lime or manganese ore into the melt.  Oxides of phosphorus, silicon, copper, manganese and chromium are also reduced when present in the ore supplied to the furnace.
Patent GB-662954-A (GB)
Title: Improvements in and relating to centrifugally moulded reinforced concrete tubes
Inventor: GOULD GILBERT CECIL MANWARING
IPC: B28B21/56
Filed: 1949-02-28
Abstract: 662,954. Concrete tubes. SPUN CONCRETE, Ltd. Feb. 21, 1950 [Feb. 28, 1949], No. 5395/49. Class 99 (ii). [Also in Group X] A block A of concrete which is consolidated and densified by centrifugal moulding, is attached to the reinforcing cage of a spun concrete tube centrally to locate the cage in a mould, and becomes part of the tube wall when the tube is moulded. The block may be in the form of a sector of an annulus having a groove 1 to seat on a longitudinal member 2 of the cage and holes 3 through which pass a wire 4 securing the block to. the cage. Batches of blocks may be produced in a mould of the same diameter as the tube and provided with a removable liner comprising longitudinal and annular partitions forming a number of cells. Core rods for the holes 3 and groove 1 are also provided.
Patent GB-855184-A (GB)
Title: Method of and apparatus for metering a gas into a container at a predetermined pressure
IPC: G05D16/20
Filed: 1958-02-19
Abstract: 855,184. Metering gases. ELEKTROPHYSIKALISCHE ANSTALT B. BERGHAUS. Feb. 19, 1958 [Feb. 19, 1957; Jan. 22, 1958], No. 5427/58. Class 135. Gas from sources 1a, 1b is metered under pressure to a container 21 from an intermediate vessel 15, in which the pressure is maintained at a higher level than in the container, by means of an intermittently operating metering device 22a comprising an inlet valve 25, outlet valve 28 and intermediate receiver 27, the valves being solenoid actuated and operated respectively by positive and negative pulses from a variable-frequency impulse generator, the metering device in each cycle of operations withdrawing a predetermined quantity of gas from the intermediate vessel 15 during a first period and feeding it to the container 21 during an immediately following second period. As shown a mixture of gases is supplied from sources 1a, 1b to the container 21, the sources discharging through valves, cleaners and driers into auxiliary vessels 7a, 7b, from which the gases are fed to the intermediate vessel 15 through metering devices 13a, 13b, the relative operating frequencies of which determine the proportions of the individual gases fed to the container. Vessel 15 is provided with an electric pressure regulator 18 controlling the operation of metering devices 13a, 13b through a contactor 19.
Patent GB-972944-A (GB)
Title: Improvements in or relating to methods of manufacturing photo-conductive layers
IPC: G03G5/08
Filed: 1963-02-11
Abstract: 972,944. Photo-conductive layers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Feb. 11, 1963 [Feb. 14, 1962], No. 5482/63. Heading H1K. A photo-conductive layer is made by applying to a support a powder of cadmium sulphide or selenide or of mixed crystals of these compounds in a solution containing phosphorus in oxidized form and one or more of cadmium chloride, bromide or iodide and then evaporating off the solvent and heating. The phosphorus in an amount of 0.05-0.5 atomic per cent based on the cadmium may be in the form of phosphorus pentoxide, phosphoric acid or ammonium phosphate, and the amount of cadmium halide is preferably 0.7-7 molecules per 100 molecules of cadmium chalkogenide. Heating may be carried out at 450-700 C. in air for a sufficient time to evaporate the halide. Preferably, the powder has a grain size of less than 100Á and has been activated by sintering in the presence of activators, for example gallium and copper, to give a content of between 5 x 10<SP>-5</SP> and 5 x 10<SP>-4</SP> atoms of each per atom of copper. In a typical embodiment powdered cadmium sulphide so activated mixed with a solution in alcohol of cadmium chloride and dilute orthophosphoric acid is sprayed on a glass support, dried at 70 C., and then heated in air for half an hour at 550 C. Aluminium electrodes 3, 4 or interdigitated electrodes are applied by evaporation through a mask and nickel wires 7, 8 bonded to them a hardenable ethoxylin resin containing silver powder. Finally, after etching the layer off the edges the photo-conductive layer is coated with a protective layer of ethoxylin resin.
Patent GB-580106-A (GB)
Title: Improvements in and relating to cutting tools for rotary trench digging machines
IPC: E02F9/28
Filed: 1944-03-24
Abstract: 580,106. Trench-digging tools. HOWARD, A. C., and ROTARY HOES, Ltd. March 24, 1944, No. 5484. [Class 6 (i)] Tools for rotary trenchdigging machines are made by securing a cutting edge to the front of the laterally projecting part 3 of an L shaped metal plate. Separate teeth mav be used insteac of a single cutting edge The " shank " or vertica portion 1 projects radially from the hub of the toolcarrier. The lateral part or " root " 3 is convex on its underside. The forwardly and downwardly projecting cutting edge 4 is of harder material such as manganese steel and welded to the root. Its side edges diverge to form a clearance for the shank to the edge of which is welded a side cutter 7 consisting of a bar of rectangular cross-section. Specification 571,914 is referred to.