baber/WOPTO huggingface dataset:
Patent GB-340409-A (GB)
Title: Improvements in hectograph copying-machines
IPC: B41L3/00
Filed: 1929-12-23
Abstract: 340,409. Copying documents. JEAN, C. W., 116, Nassau Street, New York, U.S.A. Dec. 23, 1929, No. 39359. [Class 100 (ii).] Hectograph copying-machines; printing-surfaces; stopping, starting, and throw-out arrangements.-In a hectograph copying-machine, the printing operation is directly controlled by the movement of the sheets to be printed, and means is provided for damping the sheets prior to printing. As shown, a printing-sheet, consisting of an original having a mirror copy formed on the back in hectograph ink, is fixed, reverse side out, to a roller 17 by means of gummed strips of paper. The roller 17 is adapted to be frictionally rotated by a rotary roller 10 rotated by gearing from a shaft 4 driven by chain &c. gearing from a motor. The roller 17 is hollow and has a longitudinal gap 19 defined by end walls 19<1>: to shorten the gap, circumferential extensions 17<1> are provided at each end of the roller, metal strips 26 being screwed to the extensions. At one end of the roller 17, a projecting pin 24 is provided which, in the rest position, the gap 19 being then opposite the roller 10, engages the end of an arm 21 fixed to a pivot shaft 22 carrying arms 23 the ends of which enter grooves in a feed roller 14 and lie in the path of a sheet fed between the roller 14 and a coacting roller 12, the axles of these rollers being mounted in forks 13 so that the rollers rest on a rotary roller 11 and are rotated thereby. The sheets to be printed are entered between rollers 34, 35, and pass through liquid in a tank 38 provided with a curved bottom surface, excess moisture being removed from the sheets by squeezing-rollers 5, 40 which feed the sheets up to the rollers 12, 14. The sheets are guided into the liquid in the tank by curved metal fingers 37, the point at which the rollers 5, 40 grip the sheets being below the tops of the fingers 37 so that the upper surfaces of the sheets are free from the fingers and contact solely with the liquid. A scraper made of celluloid or other material removes moisture collecting on the roller 40 and directs it back to the tank. The sheets may be moistened by means of a spraying-device instead of a tank.
Patent GB-853898-A (GB)
Title: Improvements relating to children's cots
IPC: A47D7/02
Filed: 1958-12-06
Abstract: 853,898. Cots. WILSON, L. N. Dec. 6, 1958, No. 39391/58. Class 52(2) In a dropside cot the posts 1 carry channelshaped supports 3 in which slide T-section end rails 12 of the cot side, the top of the rail being reduced in thickness and having secured over it a U-shaped bracket 14 with a hook 15 engaged in the upper position of the cot side by the hook 9 of a freely pivoted catch 8 carried by support 3.
Patent GB-863012-A (GB)
Title: Improvements in and relating to laminated magnetic core structures
IPC: H01F27/245
Filed: 1958-12-09
Abstract: 863,012. Transformers. WILLEM SMIT & CO.'S TRANSFORMATORENFABRIEK N.V. Dec. 9, 1958 [Dec. 17, 1957], No. 39707/58. Class 38 (2). A laminated magnetic core structure for a single-phase transformer has main legs 1 (Figs. 1 and 2) of approximately circular cross-section, auxiliary legs 3 of similar but smaller crosssection, which may carry tapped auxiliary coils for voltage control, and auxiliary yoke portions 4 of approximately circular or elliptical crosssection, the width of the laminations in the various layers being such that there is a substantially constant ratio between the width of the main leg lamination and the sum of the widths of the corresponding lamination in a main yoke 2 and an auxiliary yoke 3, the lamination width in each main yoke lamination layer corresponding to the difference between the width of a main leg lamination and that of an auxiliary leg lamination. Each main leg consists of two sets of lamination strips S1<SP>1</SP> and S1<SP>11</SP> (Fig. 6) spot welded together and arranged as shown. The main yoke cross-section may be roughly in the shape of a sickle, a reel or a reversed U (Figs. 4 and 5, not shown).
Patent GB-1072587-A (GB)
Title: Apparatus for determining the charge condition of liquid media
Inventor: GERDES WALTER FREDERICK
IPC: C02F1/52
Filed: 1964-09-30
Abstract: 1,072,587. Automatic mixture control. DOW CHEMICAL CO. Sept. 30, 1964 [Oct. 11, 1963 (4)], No. 39763/64. Heading G3R. In a system for treating liquids containing suspended charged particles, e.g. by the addition of flocculant variation in the condition of the liquid is sensed by flowing it in alternate directions along a path of electrically insulating material and utilizing the alternating streaming potential developed between electrodes spaced along the flow path. In Fig. 1 a liquid, e.g. water or sewage containing particles to be neutralized for flocculation before separation, flows in a conduit 220 and a sample is pumped through a filter 200 and a constrictor valve 224 to a capillary tube 212 having insulating walls e.g. of glass, plastic or wax, and electrodes e.g. of silver and silver chloride. After leaving the capillary the sample passes through a dripper 248 back to the main stream and regulator valves 226, 232 maintain constant inlet and back pressures for the capillary. The sample is repeatedly pulsed backwards and forwards in the capillary, but with net forward flow, by a diaphragm pressure pulser 286 pneumatically operated under the control of a bleed valve 242 influenced by a continuously rotating cam 274. The A. C. component of the streaming potential set up between the electrodes is applied through a coaxial cable 258 and a condenser 288 to a feedback amplifier 260 the output of which is rectified by a vibratory rectifier 277 operated magnetically in synchronism with the cam to provide a direct current which indicates the condition of the liquid and, in one arrangement, controls a pneumatic valve (not shown) varying the rate of addition of flocculant to the liquid upstream of the sampling point to maintain a neutralized condition.
Patent GB-852675-A (GB)
Title: Transparent electroconductive article
IPC: H01B1/00
Filed: 1958-12-10
Abstract: A transparent electroconductive article is produced by coating a transparent base with spaced stripes of electroconductive material, making the coated stripes only, applying a second transparent but insulating material in an amount sufficient to cause the relative thickness of adjacent stripes to be such that the interfaces between the stripes are invisible and removing the masking material.  The transparent conductive stripes may also be applied to the base by a masking technique.  The conductive material may be tin, indium, or cadmium oxide and the non-conductive material may be antimony oxide, titanium dioxide, silicon dioxide or zinc oxide or a mixture of tin oxide and either zinc oxide or boric oxide or cobalt oxide or titanium dioxide.  The materials may be applied by spraying, sputtering, vacuum evaporation or by iridization.
Patent GB-1048960-A (GB)
Title: Integrated semiconductor amplifier
IPC: H03F3/213
Filed: 1965-09-21
Abstract: 1,048,960. Transistor amplifying circuits. WESTINGHOUSE ELECTRIC CORPORATION. Sept. 21, 1965 [Oct. 7, 1964], No. 40194/65. Heading H3T. A class B amplifier which may be constructed as a monolithic unit (Fig. 2, not shown) comprises two transistors 10, 20 of first conductivity type and two, 30, 40, of second conductivity type in bridge connection, . the emitters of the first two being connected to one power supply line 18 and the emitters of the second two to the other 19. The collector of each transistor of first conductivity type is connected to an output terminal and also to the collector of a transistor of opposite conductivity type. Each of the transistors 10, 20 is driven by one of a further pair of transistors 50, 60 respectively of opposite conductivity type and the standing potentials are such that the same drive as is applied to the transistors 50, 60 may be applied to the transistors 40, 30 respectively. As shown the arrangement is driven from input terminals 16, 17 by means of a further pair of resistance-coupled transistors 70, 80. As constructed as a monolithic block, transistors 30, 40, 50, 60 are made by successive diffusion of N, P and N type, while transistors 10, 20 are of the lateral type as disclosed in Specification 1,023,565.
Patent GB-1175530-A (GB)
Title: Improvements in Non-Woven Fabrics and their Manufacture
Inventor: CROWTHER ERNEST HATFIELD
IPC: D04H1/48
Filed: 1966-12-06
Abstract: 1,175,530. Non-woven fabrics; finishing fabrics. FIBRELOCK FABRICS Ltd. 4 Dec., 1967 [6 Dec., 1966; 2 Sept., 1967], Nos. 54521/66 and 40207/67. Headings D1R and D1S. A method of making a non-woven fabric comprises needling a layer of base fibres of substantially equal diameter not exceeding 30 microns or 7 denier through a substrate from one side and subjecting the fabric to a compaction process while wet and then to a stretching or tentering process to return the fabric to its original dimensions. Primary fibres which may be the same as or different from the base fibres may be needled or tufted through the composite substrate after needling of the base fibres and before compaction. The compaction process may include milling or friction. The base fibres may be needled to both sides of the substrate as may the primary fibres. The substrate is preferably a scrim of nylon or cotton or worsted, the scrim having between 12 and 30 warps and wefts per inch. Various examples of fibres are given including, protein hair fibre e.g. cashmere, camel hair, llama, mohair, cotton, wool and man-made fibres e.g. acrylics, polypropylene and polyvinyl chloride.
Patent GB-847411-A (GB)
Title: An improved process for machining metal parts
IPC: B24B53/00
Filed: 1957-12-30
Abstract: 847,411. Trueing grinding wheels; percussion tools. FOUQUET, E. Dec. 30, 1957 [Dec. 28, 1956], No. 40240/57. Classes 60 and 124. A process for machining hard metal parts comprises cutting and removing shavings from the surface to be processed by using a grinding tool 1 provided with a multiplicity of exposed grains having effective cutting edges and simultaneously restoring effective cutting edges to expose the grains by effecting cleavage of the grains. The grains, which are embedded in hard resinous material 3, are cleaved simultaneously with the processing of the metal part by one or more percussive tools 8, Fig. 4, reciprocated, preferably at supersonic frequency, by a compressed-fluid operated piston- and-cylinder device 11, 12 or other device operated by mechanical, electrical, magnetic, vibratory or other form of energy mounted on a carriage which may be fixed or movable in directions perpendicular and parallel to the axis of the grinding wheel on slides 15, 16; the power, amplitude and frequency of the tools 8 may be adjusted by changing or controlling the fluid flowing to the device 11, 12. In another embodiment, the grains are cleaved by a ground roller 8, Fig. 5, rotatably mounted on an arm 18 pivoted on a shaft 20. The roller has a percussive action imparted to it by an extension 21 alternately drawn to electric-magnets 24, 25 which are alternately energised by wing members 27, 28 closing contacts 31, 32 and 33, 34. The roller may be periodically whetted by being brought into contact with a tool 35. Lubricant may be directed onto the part being processed, the grinding wheel, and the tool 35.
Patent GB-934092-A (GB)
Title: Reference voltage device
IPC: G05B19/07
Filed: 1961-11-10
Abstract: 934,092. Automatic speed control systems. ALLMANNA SVENSKA ELEKTRISKA A.B. Nov. 10, 1961 [Nov. 12, 1960], No. 40277/61. Class 38 (4). [Also in Group XL (c)] A saw-tooth voltage, forming the reference voltage of a speed control system, is obtained by charging a capacitor to a desired level through a transistor which is biased to pass a substantially constant current. A source of direct current 9 is connected across a centre-tapped potentiometer 8 to provide an adjustable D.C. voltage of reversible polarity with which to charge the capacitor 7. The charging current passes in series through the symmetrical collector/base circuits of a pair of transistors 1, 2, this current being substantially constant and of a desired magnitude, determined by the substantially constant emitter/base current supplied to both transistors by a second source 6 of direct current. The output of the device is obtained at terminals 10 across the capacitor 7.
Patent GB-903693-A (GB)
Title: Wrapping machine
Inventor: BECKMAN GEORGE HAROLD
IPC: B65B41/18
Filed: 1959-11-27
Abstract: 903,693. Feeding webs. GLOBE ROOFING PRODUCTS CO. Inc. Nov. 27, 1959, No. 40364/59. Class 100 (1). [Also in Group XVII] A web feed device for a wrapping machine (see Group XVII) includes photo-electric means 35, 36 responsive to the presence of the web to stop the feed and sever the web. The web is fed by rollers 31, 32 past cutting means 38 across the path of an article 15 to be wrapped and between the means 35, 36. As the web interrupts the light beam, the photo-cell causes the feed to cease and, after a timed delay ensuring that the web has come to rest, the cutter to operate. The cut wrapper then slides down to contact the stop 39. As an article 15 picks up a wrapper, it operates a switch 40 to recommence the feed cycle. Length of wrapper fed may be adjusted by moving the photo-electric means.
Patent GB-943032-A (GB)
Title: Improvements in or relating to knitting machines
IPC: D04B15/74
Filed: 1960-11-24
Abstract: 943,032. Pattern drums. SDRUZENI PODNIKU TEXTILNIHO STROJIRENSTVI. Nov. 24, 1960 [Dec. 12, 1959], No. 40369/60. Heading D1C. A pattern drum for a two cylinder multi-feed machine has two separate portions 10, 13 each advanced out of phase with the other by ratchet wheels 3,8 actuated by levers 45,44,freely mounted on a shaft 16, and actuated by cams 54, 53 on the needle cylinder 21 whose jacks are tilted by selectors 17 operated by pins 12 on the pattern drum. In the inoperative position snecks 26 of levers 25 enter recesses 15 in the drum and allow spring loaded levers 29, 35, fixed to a shaft 31,to pivot so that their end faces 33 ride on surfaces 46 of the levers 44, 45 to rock them so that their cam followers 51, 52 are brought out of range of the cams 53, 54. To effect patterning, a command drum (not shown) pivots a dog 40 so that snecks 32 on the levers 29, 35 ride from dog projections 37 to projections 38 causing the levers 29, 35 to pivot to a limited extent so that the end faces 33 slide on the levers 44, 45 and notches 34 in the levers 29, 35 bear on the outer shoulders of recesses 48, in the levers 44,45, so that the levers 44, 45 are pivoted to a limited extent such that the followers 51, 52 are brought partially within the range of the cams 53, 54 and the ratchet wheels 3, 8 are advanced one tooth pitch for each revolution of the cylinder 21. If it is desired to advance the drum two teeth pitches of the ratchet wheels 3, 8 pegs 12<1> are placed in the drum holes 11 at the height of the recesses 15. These pegs 12<1> rock the lever 25 allowing the levers 29, 35 to further pivot so their snecks 32 are clear of the dogs 38 and their ends 33 fully enter the recesses 48 causing a further pivoting of the levers 44, 45 to bring their followers 51, 52 fully within the range of the cams 53, 54. If it is desired to temporarily stop patterning, e.g. at heel or toe, the dog 40 is further pivoted so that its projections 39 engage the snecks 32 causing the end faces 33 of the levers 29, 35 to ride on to surfaces 47 of the levers 44, 45 and to bring their followers out of range of the cams 53, 54. The dog 40 may be in two parts allowing independent operation of each portion 10. 13 of the drum.
Patent GB-1275567-A (GB)
Title: Improvements in filter press element constructions
Inventor: WINTERSTEIN LOUIS GEORGE
IPC: B01D25/21
Filed: 1969-08-13
Abstract: 1275567 Filter press elements L G WINTERSTEIN 13 Aug 1969 40462/69 Heading B1D. Filter press plates 10 and frames 12 are made of plywood, the grains of alternate plies extending at right angles to each other. Sheets of paper or cloth filtering medium are supported by ridges 20 defining filtrate drainage channels 18 in plates 10. In Fig. 2 the plies 42 of plates 10, wherein channels 18 are wholly formed, are all similarly oriented, only internal plies 44, 46 crossing. In Fig. 3 (not shown) plies 42 are replaced by facing plies of high density fibreboard, one on each face of plate 10. Plates 10 and frames 12 have corner apertures (30, 32) for slurry and filtrate.
Patent GB-1217708-A (GB)
Title: Process for the manufacture of flexible weldable polyurethane foams
IPC: C08G18/22
Filed: 1968-08-23
Abstract: 1,217,708. Polyurethane foam. WACKERCHEMIE G.m.b.H. 23 Aug., 1968 [23 Aug., 1967], No. 40470/68. Headings C3C and C3R. Flexible polyurethane foam is prepared by reaction of: (I) an aliphatic polyether polyol, M.W. 700-10,000, which contains 2 to 3 reactive hydrogen atoms per thousand M.W. units, (II) a polyisocyanate; (III) water; (IV) a catalyst mixture comprising (a) an organo-tin and/or an organo-lead compound, and (b) an alkali metal salt of an organic acid which has a pH <8, measured in a 0À1 N soln., e.g. sodium or potassium mono- or di-chloroacetate; and (V) 10-50% of the product of a powered polymer comprising at least 50% of vinyl acetate or vinyl chloride units. I may be a homo- or copolymer of ethylene oxide, propylene oxide, trimethylene oxide or tetrahydrofuran. II may be tolylene 2,4- and/or 2,6-diisocyanate. Suitable organo-tin compounds for IV are: dibutyl tin dilaurate, dioctyl stannate, di-(2- ethylhexyl) - tin diacetate and dioctyl tin dipropionate; suitable organo lead compounds are phenyl-lead triacetate, phenyl-lead trilaurate, p-tolyl-lead triisobutyrate, #-naphthyl lead tribenzoate and #-naphthyl lead triacetate. V may contain a minor proportion of units selected from vinyl bromide, vinylidine chloride, vinyl esters of C 1-18  carboxylic acids, olefins, acrylic compounds, unsaturated dicarboxylic acids and their mono- and di-esters; a polyvinyl chloride homopolymer paste is used in the examples. Reaction may optionally take place at superatmospheric pressure and elevated temperature. Low M.W. polyols, polyamines, pore regulators, plasticizers, light and heat stabilizers may also be present.
Patent GB-1281864-A (GB)
Title: Treatment of waste liquids
IPC: C02F9/00
Filed: 1970-08-24
Abstract: 1281864 Treating complex iron-cyanide ions in waste liquids AMCHEM PRODUCTS Inc 24 Aug 1970 [25 Aug 1969] 40610/70 Heading C1C Ferricyanide and/or ferrocyanide ion is/are removed from waste aqueous liquids by the acidification of the solution, if necessary to a pH of less than 5, the addition of ferrous ion in such an amount that the molar ratio of ferrous ion toferricyanide and/or ferrocyanide is at least 7, the adjustment of the pH of the solution to within the range of 6À5 to 9À0 and the subsequent separation of the resultant precipitate from the liquid. If the solution also contains hexavalent chromium, the process is modified by the reduction of the chromium to the trivalent state using sulphur dioxide, sulphurous acid or a bisulphite before the acidification (or otherwise) of the solution.
Patent GB-973503-A (GB)
Title: Method of making diamonds
IPC: B01J3/06
Filed: 1960-11-25
Abstract: <PICT:0973503/C1/1> Diamonds are produced by subjecting carbon to high temperatures and pressures in the presence of a metal of the elements in Group VIII of the Periodic Table or manganese, tantalum or chromium or alloys thereof wherein the metal or alloy is molten or in solid solution and wherein the temperature and pressure are selected to lie for each metal or alloy at a point in the diamond zone of the diamond/graphite equilibrium diagram closely adjacent the high temperature side of the equilibrium line and above the cube region, maintaining the temperature constant over a period of time sufficent to allow the diamonds to form, then reducing the temperature and pressure and recovering the diamonds.  In Fig. 2 the line AB represents the diamond graphite equilibrium line for a nickel-chromium catalyst consisting of 80% Ni and 20% Cr. The cube region is the area between AO and CD. Operation is in the shaded area between EF and DB.  With a small vessel the pressure is raised to P1, where it is kept while the temperature is raised to T1; after stabilization the temperature is quickly raised to T2, e.g. in 1-3 seconds where it is held for a few hours to allow diamonds to form. In a large vessel, after the pressure is raised to P2, the temperature is raised as quickly as possible to T3 and held there until the system reaches equilibrium.  It is then cooled to T2 and held as before.  If desired, the temperature may be raised first and then the pressure increased until a point in the shaded area is reached.  Specifications 830,210, 874,291 and 971,157 are referred to.
Patent GB-1306014-A (GB)
IPC: B65D51/22
Filed: 1971-08-31
Abstract: 1306014 Containers GRADKO GLASS LABORATORIES Inc 31 Aug 1971 [24 Sept 1970] 40667/71 Headings B8C and B8D [Also in Division B1] A container assembly for medicine or blood samples comprises a flexible polyethylene or polypropylene container 101 having a neckmembrane 115 piercable by a flanged bush 121 slidable in the container neck, and a capillary tube assembly which is removably positioned in a scabbard 114 integral with the container and which is adapted to be plug fitted in the bush after the latter has pierced the membrane. The bush is sealed by a plastics film 103 which is removed, pierced or burst by squeezing the container. The tube assembly comprises a tubular holder 104 carrying a cap 136 at one end and a capillary tube 105 at the other. The holder has a transverse lower end bore 134 whereby a blood sample in the capillary tube may be mixed with a measured quantity of diluent in the container by the flushing of the capillary tube which occurs when the assembly is shaken. The mixture may then be dispensed dropwise by breaking away a cap ball portion 139 or dispensed in a stream by removing the cap. The container is initially filled through the lower end, the bottom 113 being subsequently ultra-sonically welded or adhered on.