baber/WOPTO huggingface dataset:
Patent GB-790123-A (GB)
Title: Improvements in or relating to electrical rectifying circuit arrangements
Inventor: THOMPSON WILLIAM GEORGE
IPC: H02M7/06
Filed: 1955-02-24
Abstract: 790,123. Rectifying. GENERAL ELECTRIC CO., Ltd. Feb. 23, 1956 [Feb. 24, 1955], No. 5588/55. Class 38 (2). A D.C. load such as a traction motor 1 is supplied from a single-phase source 2 through a transformer 3 having a secondary winding to the two ends and a centre tap of which are connected respectively semi-conductor rectifiers 5, 7, 6, whose other terminals are connected to a common point 10, the load 1 together with smoothing means 11 being connected across rectifier 6, and rectifiers 5 and 7 being blocked for the first 60 degrees electrical of each conducting half-cycle of applied voltage. The blocking is by chokes 8, 9 having saturating windings carrying current composed of a series of rectified half-waves opposed by steady D.C. of 'suitable value. The two components are derived from a transformer 12 connected to the A.C. supply 2. The rectified half-waves are obtained from secondary winding 13 through rectifier 20, and the steady D.C. from secondary winding 14 through rectifier 16 connected to resistor 17 through smoothing-circuit 18, 19. The instants at which valves 5, 7 conduct are not altered by changes in supply voltage, e.g. by alteration of autotransformer 4. This arrange-. ment reduces the harmonics in the supply line current.
Patent GB-956812-A (GB)
Title: Liquid filter assemblies
Inventor: TUFFNELL DERRICK PERCIVAL
IPC: B01D35/30
Filed: 1962-02-14
Abstract: 956,812. Filters. GENERAL MOTORS Ltd. Jan. 17, 1963 [Feb. 14, 1962], No. 5651/62. Heading B1D. A filter casing comprises a cup-shaped shell provided with a coaxial stud one end of which is non-detachably secured to the base of the shell and the other end of which is threaded for engagement with a filter mount face. Filter casing 2 has conical base 5 with central flat portion 6, provided with a coaxial hole, and is provided with annular flange 7. Stud 3 having annular flange 9 abuts the external surface of the shell base 5 and is secured to the end portion 6 of the base by, e.g., brazing or welding. The other end 10 of the stud extends beyond flange 7 and screws into tapped hole 29 in mount face 15. Stud 3 may be formed without flange 9 and may be mounted on the inner surface of base 5. The filter casing is adapted to be assembled manually on to the mount face, and to this end, a plurality of longitudinal ribs 8 may be formed on the shell of the casing to aid gripping. Alternatively the outer surface of the casing may be mechanically roughened or gritty material, e.g. sand, may be secured by adhesive or paint to the outer surface. In the embodiment illustrated, a valve housing is formed between one end cap 14 of the filter element and a member 23 pressed resiliently against it.
Patent GB-1090872-A (GB)
Title: Improvements relating to vacuum switches
Inventor: REECE MICHAEL PETER
IPC: H01H33/664
Filed: 1964-02-11
Abstract: 1,090,872. Vacuum switches. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 2, 1965 [Feb. 11, 1964], No. 5690/64. Heading H2B. At least one of the contacts 8, 9 of a vacuum switch is formed with an annular groove 11 surrounded by an annular ridge 12 projecting above the surface of its central region 17. The central region is formed with a further annular groove on its reverse side so that the current is forced to flow near to the surface. The ridge 12 and the outer wall 13 of the groove are formed with slots of any of the types described in Specification 997,384; the present arrangement is stated to increase both the radial and circumferential forces on the arc which are created by the slots.
Patent GB-621720-A (GB)
Title: Control systems for electric cooking and heating apparatus
IPC: F24C7/08
Filed: 1947-02-27
Abstract: 621,720. Two-part couplings combined with switches. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 27, 1947, No. 5707. Convention date, Feb. 28, 1946. [Class 38 (i)] [Also in Group XXXV] A socket outlet on an electric cooker for an auxiliary heating circuit supplied through a two-pin plug (see Group XXXV) comprises three equally spaced sockets 23, 24 and 25 and a shutter 27 of insulating material having two apertures 28, 29 so as to expose the centre socket 24 and one of the outer sockets 23, 25 at a time. The sockets 23, 25 are connected respectively through a time switch and direct to the supply. A protuberance 37 opens a switch 18'in the oven circuit when the shutter exposes sockets 23, 24. The shutter is biassed by a spring 30 so as to allow the switch 18 to reclose when the plug is withdrawn from sockets 23, 24, and has a stop 35 to limit the travel of the shutter.
Patent GB-1518626-A (GB)
Title: Plastics-glass composite panes
IPC: B60J1/02
Filed: 1977-02-11
Abstract: 1518626 Laminates SAINT-GOBAIN INDUSTRIES 11 Feb 1977 [12 Feb 1976] 5726/77 Heading B5N A pane comprises at least one sheet 3, 5 of glass having a protective layer 6 of plastics material on a face thereof, one or more areas of the protective layer being omitted or covered with a material 2 which is harder than the plastics to provide an area on the pane to receive a label. The material 2 may be a polyester, polyamide, polyurethane, polyvinyl chloride, styrene-acrylonitrile copolymer, polyacrylate, polycarbonate or cellulose ester and may be adhered to the layer 6 by a polyamide, polyester, epoxy or cyanacrylate resin, polyurethane, polyvinylacetate, polyacrylate, butadiene styrene copolymer, polyisobutylene, polychloroprene, nitrile rubber or natural rubber adhesive 8.
Patent GB-1395144-A (GB)
Title: Light fittings
IPC: F21V17/10
Filed: 1974-02-07
Abstract: 1395144 Fastenings; hinges PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 7 Feb 1974 05736/74 Headings E2B and E2F [Also in Division F4] The light-transmitting cover 11 of a lighting fitting is fastened to the housing 1 against a resilient gasket 5 by means of at least one clip comprising first, second, third and fourth members 13-16 joined together in series by three hinges 17-19, the first and fourth members being releasably fastened to the housing and cover, respectively, and the second and third members being adapted to form a toggle fastening. When the toggle fastening is released the cover 11 is suspended below the housing 1 and can be swung to an open position. The member 13, which is made of stainless steel strip, is attached to a flange 7 on the housing by engaging the hooked lower end 30 of the member over the lower edge of the flange and snapping the upper end of the member over the upper end of the flange, whilst the member 16, which is made of similar material, is attached to the rim 12 of the cover 11 by inserting the hinge 19 into the recess 33 beneath the rim and forcing the member over the rim until a lip 35 on the cover snaps into a window formed in the member. Several similar clips are disposed along one side of an elongated fitting, the other side being fastened by clips of identical construction except for the omission of the member 16.
Patent GB-349597-A (GB)
Title: Improvements relating to gutters and the manufacture of trough-like elements from setting materials
IPC: B28B7/02
Filed: 1930-02-21
Abstract: 349,597. Moulding gutters &c. LEVY, M. and PRODORITE SOC. ANON., 133, Rue de Chatelaine, Geneva, Switzerland. Feb. 21, 1930, No. 5864. [Class 87 (ii).] Gutter or trough-like sections are made in moulds which are built up of adjustable members so that the whole series of sections for a run of guttering may be produced by a single mould. The 'mould comprises side members e adjustably secured to vertical frames carried by a base member c. A central core g is secured to the base, and may be provided with a longitudinal strip k to facilitate disassembly. Longitudinal members e<2> are adjustably secured to the side members e and may be set at an angle to form a gutter section with drainage slope. Successive sections in the runway are made by vertically adjusting the members e<2>. Specifications 201,650 and 237,010, [both in Class 22, Cements &c.], are referred to.
Patent GB-322700-A (GB)
Title: Improvements in and relating to the production of ammonium phosphates
IPC: C01B25/40
Filed: 1929-02-22
Abstract: 322,700. Guillissen, J., and Union Chimique Belge Soc. Anon. Feb. 22, 1929. Ammonium phosphates. - In preparing ammonium phosphates by neutralizing phosphoric acid with ammonia, ammonia is added in excess, whereby tri-ammonium phosphate is precipitated. A solution of phosphoric acid obtained by treating crude phosphate with sulphuric acid is diluted with water and sufficient ammonia is passed in to precipitate impurities consisting of iron, aluminium and calcium salts. Gaseous ammonia in excess is passed into the filtrate, when the bulk of the phosphoric acid is precipitated as triammonium phosphate which may be separated and heated to form di- or mono-ammonium phosphates. The mother liquor may be used to dilute a fresh quantity of phosphoric acid, or may be heated in iron apparatus for recovery of ammonia.
Patent GB-428884-A (GB)
Title: An improved device for scoring in games such as bridge
IPC: A63F1/18
Filed: 1934-02-23
Abstract: 428,884. Memorandum appliances. WEATHERALL, E., 19, Jubilee Place, Chelsea, London. Feb. 23, 1934, No. 5995. [Class 16] A scoring-device for games such as bridge comprises a metal plate, having one portion a adapted to lie on the top of a table, formed with a retroverted portion b, c constituting a bowed spring which will enable it to be clipped to the table top without the use of clamping-screws or a spring hinge, the portion c having a pair of spaced lugs d serving rotatably to support a roll of paper e, the metal plate having spring arms g, h extending there across from opposite sides to retain on the plate a strip of paper drawn from the roll, and the spring arm h being arranged at the free end of the plate and preferably formed to constitute a holder j for a pencil. The lugs d, which may be integral with the portion c or secured thereto, are bent slightly inwardly and provided with pressedout portions f constituting supports for the roll e ; the lugs press against the sides of the roll to resist rotation of the latter. The tongues g, h may be secured to or integral with the portion a of the plate, the tongue h being bent upwardly at k, the arrangement being such that the strip of paper can be torn off across the top edge of the part k, so that the remaining portion of the strip will still protrude slightly beyond the tongue h ready for subsequent manipulation. A bridge-piece o is riveted to the portion b, and is provided with a notch therein, so that if the point of a pencil is placed in the notch when the strip of paper is drawn forward a dividing line will be drawn along the strip. The spring tongue g serves as a dividing line for bridge scores.
Patent GB-525577-A (GB)
Title: Improvements in and relating to the preduction of textile threads
IPC: D01F4/00
Filed: 1939-02-23
Abstract: 525,577. Artificial filaments &c. COURTAULDS, Ltd., and WILSON, D. L. Feb. 23, 1939, No. 6052. [Class 2 (ii)] Artificial filaments, yarns, films, or the like obtained from solutions of casein, soya bean protein, arachis nut protein, or similar protein are subjected to the action of a hardening medium containing formaldehyde in such manner that only part of the desired hardening takes place, and the final hardening is effected after drying the partially hardened filaments, by subjecting them to a heat treatment. The partial hardening may be effected in stages. After the partial hardening has been carried out, sufficient of the hardening agent is left in or on the filaments to enable the further hardening to take place during the subsequent heating. In addition to the formaldehyde, the hardening medium may contain other aldehydes, synthetic tanning agents, salts of aluminium or chromium, organic or inorganic salts of alkali metals, and substances having an acid or alkaline reaction added to adjust the pH value. The heating of the dried products may take place at 90-135‹C. and if desired in an inert atmosphere or under reduced pressure. Between the partial hardening and the drying steps, the products may be washed with water or a solution of formaldehyde and a salt. If desired, thorough washing may be followed by re-impregnation with formaldehyde. The treated products may have a reduced affinity for wool dyestuffs. In an example, an aqueous solution of casein in caustic soda is spun into sulphuric acid and sodium sulphate. The threads produced are drawn through solutions of sodium chloride and then through solutions containing sodium chloride, sodium sulphate, and aluminium sulphate. It is then cut to staple fibre. The fibres are then further hardened by treatment with a solution of sodium acetate, and formaldehyde. The partially hardened fibres are rinsed and dried and then heated at 130-135‹C. for a few hours. In other examples the fibres are partially hardened with a solution of chromium sulphate or basic aluminium nitrate and formaldehyde. In another example, the fibres are washed with water and then with acetone before the drying and heating step. In another example, the casein fibres, preliminarily hardened with aluminium sulphate solution are further hardened with a solution of basic aluminium sulphate and formaldehyde, then washed, treated with sodium phosphate and formaldehyde, dried, and then heated at 130‹C.
Patent GB-349462-A (GB)
Title: Improvements in or relating to winding bands for the coating of rollers
IPC: D21F3/08
Filed: 1930-02-24
Abstract: 349,462. Rollers. WENZEL, M., Neidhardtstal, Post Wolfsgr³n, Saxony, Germany. Feb. 24, 1930, No. 6056. Convention date, March 1, 1929. [Class 42 (ii).] The surface forming band b which is wound on rollers for paper-making &c. machines is provided with a cavity f for the winding cord c instead of this being placed in the recess formed by doubling over the sides of the band as shown in Fig. 1.
Patent GB-164104-A (GB)
Title: Improvements in the coking of coal
IPC: C10B57/08
Filed: 1920-02-28
Abstract: 164.104. Illingworth, S. R. Feb. 28, 1920. Coking processes.-In a two-stage coking process, the coal is first heated to a temperature not above 500‹ C. out of contact with air, in order to destroy the non-coking cellulosic ingredients, and to leave 5 per cent of the resinic constituents in the product. The second stage may be effected a.t a temperature of 900-1000‹ C., and the gas evolved may be utilized to heat directly a charge in the first stage. Specifications 101,539 and 125,379 are referred to.
Patent GB-641632-A (GB)
Title: Improvements in centrifugal separators
IPC: B04B11/02
Filed: 1948-02-27
Abstract: 641,632. Stuffing-box substitutes. AKTIEBOLAGET SEPARATOR. Feb. 27, 1948, No. 6080. Convention date, Feb. 27, 1947. [Class 122(v)] [Also in Group II] In a separator with a liquid seal between rotary and stationary parts, control means are provided to ensure that the pressure of the sealing liquid is sufficient to prevent leakage from the separator of the liquid under treatment therein. In Fig. 3 liquid to be clarified enters the separator by pipe 2 and leaves by the pipe 5. The sealing liquid enters and leaves by pipes 4, 5 respectively. The flow is controlled by valves 16, 17 and a valve 9 controlled by means 8 responsive to the pressure on the outlet side of the sealing liquid. In Fig. 1 instead of valves 16, 17 the outlet of sealing liquid is controlled through a valve 6 by means 7 responsive to the discharge pressure of the liquid under treatment. An alarm 10 is actuated if the outlet pressure of the sealing liquid is too low. Arrangements involving two separate seals, and two separate liquid discharges from the separator, are described. Control of the separator discharge is effected. Specification 616,405 is referred to.
Patent GB-468525-A (GB)
Title: An improved draught stop for use on the bottom of doors
IPC: E06B7/20
Filed: 1936-02-29
Abstract: 468,525. Draught-excluders for doors. LINCOLN, H., and HANNAN, L. Feb. 29, 1936, No. 6109. [Class 20 (iii)] The actuating means of a sliding-bar draughtexcluder for the lower edge of a door comprises a plunger L adapted to engage the jamb; levers K, D on a pivoted tube E, and links C connected to the rods A on which is carried the excluder strip G. The plunger is held in operative position on the lever K by a stop, and the levers D, K are clamped in suitable positions on the tube. The rods A have slotted flats in which the strip G is resiliently held by springs H and screws, and are raised by springs F. The mechanism is mounted in two box-shaped casings the sides of which are apertured for the tube E, and covers are secured over the casings by lugs at the lower ends and screws above.
Patent GB-549366-A (GB)
Title: Process for weighting artificial textile materials
IPC: D06M11/20
Filed: 1941-05-15
Abstract: 549,366. Weighting and fireproofing artificial textile materials. BRITISH CELANESE, Ltd. May 15, 1941, No. 6263. Convention date, May 15, 1940. [Class 15 (ii)] [Also in Group VIII] A textile material containing filaments of a polyvinyl compound is weighted and rendered less inflammable by treating it with a solution of a weighting metal compound in an aromatic organic solvent. The weighting metal compound deposited in the material may be converted into a water-insoluble compound. The weighting metal compound may be a salt of tin, lead, titanium, zinc, antimony, aluminium, bismuth, or tungsten. Stannic chloride is preferred. The solvent may be benzene, toluene, or xylene. The textile material may be treated with a hot or cold solution of the weighting compound. The weighting solution may contain a swelling agent for the polyvinyl compound, e.g. acetone or concentrated acetic acid. Conversion of the deposited metal salt into a water-insoluble compound may be effected by hydrolysis, e.g. the treated textile material may be soaked with warm or cold water. When stannic chloride is used, the treated textile material may be sprayed with hard water, and further treatments with solutions of sodium phosphate and sodium silicate may be given. The yarns, filaments, or fabrics may have a basis of polyvinyl chloride, or polyvinyl acetate, or a copolymer of vinyl chloride and vinyl acetate. Mixed fabrics may be treated. The weighting treatment also renders the textile materials more resistant to heat and raises the safe ironing temperature.
Patent GB-173176-A (GB)
Title: An improved aseptic portable or pocket holder or case for clinical or other thermometers
IPC: G01K1/08
Filed: 1921-02-24
Abstract: 173,176. Cossor, F. Feb. 24, 1921. Thermometers. - An aseptic case for a clinical &c. thermometer comprises a glass tubular member a having at its lower end an enlargment b forming a disinfectant chamber, the length ot which is such as to contain the bulb f of the thermometer while its volume is sufficient to contain the quantity of disinfectant necessary for immersing the bulb and for bathing the stem when required. Within the chamber b is a coiled spring d into which the bulb f passes, the spring carrying at its upper end an apertured disc e against which the shoulder g of the thermometer bears. The case is closed at its upper end by a screw cap k containing a pad l of cork &c. the arrangement being such that closure of the cap causes compression of the spring d. In a modification the disc e is omitted and the spring is made of tapering form with the narrow end uppermost.
Patent GB-645051-A (GB)
Title: Improvements in or relating to ordnance
IPC: F41A21/16
Filed: 1945-03-13
Abstract: 645,051. Ordnance. BURNEY, Sir C. D. March 13, 1945, No. 6305. [Class 92 (ii)] A gun has a chamber whose volume exceeds 25 per cent of the barrel bore volume and a rifled barrel of which the pitch of the rifling is less than 1 in 24 calibres. As examples the chamber volume may be from 30 per cent to 50 per cent of the barrel bore volume and the pitch of the rifling may lie within the range of 1 in 10-22 calibres.
Patent GB-681702-A (GB)
Title: Shoe and method of making the same
IPC: A43B9/14
Filed: 1948-02-28
Abstract: 681,702. Making footwear. KEFERSTEIN, C. G. Feb. 28, 1948 [Sept. 18, 1946], No. 6321/48. Class 17 (ii). A vamp lining 1 has two slits 2 to form a tab 3, Figs. 1, 3. After it has been attached to an upper, it is slip-lasted to an insole 5, Figs. 2, 3, with the points 7 arranged to overlap in the vicinity of a central projection 6 on the toe end of the insole. Overlapping of the points 7 allows for adjustment of measurement around the edge of the insole of the securing stitches in stitching the lining to the insole. The point 6 is then cut off, a last inserted and the tab 3 stuck down to the body of the lining. A stiffener may be inserted between upper and lining and the upper lasted with its margin out-turned for attachment by sewing or cement to an outer sole. In a modification, Fig. 9, the lasted upper is stitched to a welt 26, lining 1 and to a stitchreceiving rib 27 with which the innersole 5a is provided before its attachment to the lining.
Patent GB-1425095-A (GB)
Title: Process for feeding an evaporation bath
IPC: C23C14/24
Filed: 1973-02-08
Abstract: 1425095 Replenishing an evaporation bath ACIERIES REUNIES DE BURBACH-EICHDUDELANGE SA and COCKERILL-OUGREEPROVIDENCE SA 8 Feb 1973 [8 Feb 1972] 6345/73 Heading C7F A bath for vaporization of a metal or alloy in vacuum vapour deposition apparatus is replenished by continuous feeding of a wire or filament which is heated by heating means, different from those which heat the bath, immediately prior to being fed to the bath. The melting temperature of the wire may exceed 1200‹C, and it may be heated such that the temperature difference between the wire and the bath is less than 1000‹C, the evaporated metal may be Cr/Ni 80/20, and a continuous steel sheet substrate may be coated. As shown, wire from reel 1 is fed into vacuum chamber 3 via gas tight seal 2, into a bath of metal 7 heated by an electron beam from source 8, the wire being heated by an electric current flowing between spaced contacts 5 and 6; alternatively the heating means may be an induction coil or a second electron beam Figs. 2 + 3 respectively, (not shown).
Patent GB-490614-A (GB)
Title: Improvements in or relating to heel pieces, heel tips and the like for footwear
IPC: A43C13/02
Filed: 1937-03-03
Abstract: 490,614. Rubber heels and soles. SUSSEX RUBBER CO., Ltd., and BAILEY, S. March 3, 1937, No. 6384. [Classes 17 (ii) and 17 (iii)] A composite heel pad comprises a base portion 1, e.g. of rubber, having a thickened marginal portion or portions 2, and a filling member 3 of a different material, e.g. leather, positioned thereon by the engagement of one or more studs or projections 7 on the base portion in or through the filling member. The abutting faces of the filling member 3 and marginal portion 1 are inclined so as to hold the parts at an angle to one another, as shown, before attachment. Adhesive may be employed to improve the connection between the base portion 1 and filling member 3. The invention may be applied to soles in which case more than one stud would be employed on the base member to position the filling member.
Patent GB-634005-A (GB)
Title: Improvements in or relating to explosive boosters
IPC: F42B3/00
Filed: 1948-03-01
Abstract: 634,005. Blasting-detonators. WRIGHT, H. R., MARTYN, R. W., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 1, 1948, No. 6423. [Class 9 (i)] A detonating explosive booster for use under conditions of high hydrostatic pressure comprises a thickwalled rigid cup 1 into which is screwed a second thick-walled cup 3 containing an explosive pellet primer 6 of high melting point such as cyclonite. An axial channel in the primer accommodates a thinwalled detonator tube of aluminium into which is compressed a charge 10 of lead azide mixed with lead styphnate and aluminium and a charge 11 of cyclonite or other explosive with a melting-point above 180 C. A rubber disc 8 is placed in the cup 3 and a gasket 9 forms a seal between the two cups. To facilitate assembly, flats are provided on the cup 1 and projections 13 on the cup 3. The cup 1 has an external recess 5 forming a weakening of the end wall which will rupture on detonation of an explosive in its proximity. Both cups may be of steel.