baber/WOPTO huggingface dataset:
Patent GB-794346-A (GB)
Title: Improvements in and relating to the production of synthetic filaments and threads
Inventor: CLARKE KENNETH
IPC: D02J1/22
Filed: 1954-11-29
Abstract: In a continuous process in which a tow of solid filaments or threads of synthetic polymeric material is cold drawn, a stream of liquid is directed downwards through the tow, at a point where it is unsupported from below, with sufficient force to wash a broken thread or filament out of the tow.  The polymeric material may be nylon, polythene or a synthetic linear polyester.  When the stretching or cold-drawing process must be assisted by warming the filaments or threads, the stream of liquid is maintained above room temperature and preferably at about the optimum cold-drawing temperature of the filaments or threads.  In the example, eighteen filaments of polyhexamethylene adipamide extruded through a spinneret plate into a quench bath of water at 30 DEG  C. are passed, on emerging from the bath, in the form of a flattened tow or ribbon of parallel, closely spaced filaments between two pairs of horizontal nip rolls which are driven at the same peripheral speed of 200 ft. per min. and function both as the haul-off rolls for the extruder and as slow rolls for the cold-drawing unit.  On emerging from the nip of the second pair of rolls, the filaments are fanned out in a vertical direction and each is passed to its own fast draw roll assembly (driven at a peripheral speed of 800 ft. (min.) and skeining reel.  Between the slow and fast rolls, the horizontal displacement of the filaments remains constant while the vertical displacement between adjacent filaments increases gradually and continuously.  In a position about 2 inches from its emergence from the slow nip rolls, the whole width of the tow is subjected to the action of a downwardly flowing stream of water supplied from a nozzle above the tow and collected by a funnel below the tow.  From here the water passes to a storage tank where it is maintained at a temperature of 60-65 DEG  C. and from which it is supplied continuously to the nozzle.  A single pair or series of slow nip rolls may be used in conjunction with a single pair or series of fast nip rolls which draw the whole tow.  If a filament is broken during the drawing step its leading end is washed down into the water storage tank, in which the filament continues to collect until it can be rethreaded; meanwhile, the trailing end of the filament passes harmlessly through the fast draw roll to the skeining reel, and no tangling with the unbroken filaments occurs.  When the filaments have not passed directly from the spinning unit to the cold-drawing unit, they are usually soaked batch-wise for several hours in water or another hydroxylated non-solvent before drawing.
Patent GB-1475577-A (GB)
Title: Particle concentration detector
IPC: G03G15/08
Filed: 1974-08-06
Abstract: 1475577 Electro-photographic developing apparatus XEROX CORP 6 Aug 1974 [6 Aug 1973] 34562/74 Heading G2H An apparatus for regulating the toner particle concentration within a developer mix of toner particles and carrier granules in a developing  apparatus of an electro-photographic copying machine; includes a reflecting surface bearing an electrical voltage test pattern having a gradient from a first potential to a second potential, to which voltage pattern the developer mix is applied to deposit toner particles thereon; and further  includes means for projecting a beam of light rays to illuminate a region of the toner-coated reflecting surface having a pre-selected potential intermediate said first and second potentials, and means for detecting the intensity of reflected light rays and producing an electrical signal for dispensing toner particles into the mix to maintain the concentration thereof at substantially the desired level. In one embodiment, the reflecting means comprises conductive layers 50, 52, 54 electrically connected to resistance layers 56, 58 secured to an insulating layer 60 and mounted close to one edge of the photo-conductive surface of a xerographic drum, a relatively low voltage e.g. 500 volts, being applied to conductive layer 54 and a higher voltage, e.g. 900 volts, being applied to each of layers 50, 52. In another embodiment, the voltage pattern is produced on the charged photo-conductive surface of the zerographic drum by exposing a small portion of it to light passed through a variable optical density disc. Both of the above embodiments may be applied to multi-colour machines, different preselected potentials being used for each colour.
Patent GB-1529077-A (GB)
Title: Substituted vinyl(di-or tri)thiophosphoric(phosphonic)acid esters and ester-amides and their use as insecticides and acaricides
IPC: A01N57/22
Filed: 1976-08-19
Abstract: 1529077 Unsaturated thiophosphoric acid esters and ester-amides BAYER AG 19 Aug 1976 [20 Aug 1975] 34605/76 Heading C2P The invention comprises compounds I having the general formula: in which R and R 4  are C 1-6  alkyl, R 1  is H or methyl, R 2  is CN, halogen, C 1-4  alkyl, C 1-4  alkoxy, C 1-4  alkylthio or phenyl, R 3  is alkyl, alkylthio or alkylamino with 1 to 6 carbon atoms in each ease, or phenyl, X is O or S and n is 0, 1, 2, 3, 4 or 5 but is not O when R is methyl. They are obtained by reacting a halide: where Gal is halogen with an ester of the formula: where M is H or one equivalent of an alkali metal, alkaline earth metal or ammonium, The products have insecticidal and acaricidal properties and may be used as active ingredients in conventional pesticidal compositions.
Patent GB-394320-A (GB)
Title: Improvements in or relating to vaporizers for internal combustion engines
IPC: F02M31/08
Filed: 1931-12-14
Abstract: 394,320. Vaporizers. BONDARENKO, A. P. and BOURMAKIN, J. V., Harbin, Manchuria. Dec. 14, 1931, No. 34618. [Classes 7 (ii) and 7 (iii).] A vaporizer for use in the intake conduit between the carburetter and cylinder block comprises an enlarged chamber 76 with an inlet port 77 from the carburetter disposed midway between the ends of the chamber and outlet ports 78 at or near the ends thereof leading to two or more spaced cylinders, the flow through the chamber being from the centre towards both ends, and thermally conducting foraminous material 87 disposed within the chamber in the path of the flow. The foraminous material may be a spiral of copper gauze inserted through the removable end 81 of the chamber, or, as shown, copper gauze sheets may be clamped between plates 84, 86 bv bolts 83 and be removable from the chamber as a unit. Exhaust gases passing through an adjacent chamber 88 heat the chamber 76. In a modified construction, metal wool 68, Fig. 3, is disposed in the chamber 64 between baffles 66, 67 which compel the combustible mixture to follow a tortuous passage, and the exhaust gases pass around the chamber through a passage 69. In another form, the exhaust gases pass through a central pipe surrounded by the chamber 64, which is of cylindrical form and provided with baffles.
Patent GB-901587-A (GB)
Title: Apparatus for applying covering sheets to open-faced containers
IPC: B65B7/28
Filed: 1958-10-29
Abstract: 901,587. Packaging-machines. INVICTA FOIL CO. Ltd. Oct. 29, 1958 [Feb. 7, 1958], No. 34647/58. Class 94(1). Apparatus for securing a film, &c., cover sheet to an open-topped filled tray comprises a frame having inwardly extending elements oscillatable in a vertical plane, the tray with a cover sheet laid on its rim being passed through the frame so that the elements fold the sheet margin about the rim. Filled trays C are fed by a conveyer 39 to a vertically movable table 30. A web of covering material S is advanced along guides 44 to overlie the tray and is severed by cutters 45, 46. The table rises carrying the tray and cover sheet past the wiping elements F and the completed package is ejected from the table on to a conveyer 32 by a ram 49. In all embodiments a preliminary folding ring 36 may be provided and a plate 34 may engage the cover to hold it in place during upward movement and flatten the tray contents,  In one embodiment the folding elements F are of resilient material and arranged in corner and side sections adjustably mounted to cope with different tray sizes. The upper 59 of two finger portions wipes the cover over the rim while the lower 60 tucks it beneath the rim. Another embodiment comprises an annular folding element of similar section to that shown for covering circular trays, Figs. 9, 10 (not shown). The folding elements in a further embodiment are of rigid material pivoted by cylinder and socket joints to the frame and biased downwards by springs, Figs. 12-15 (not shown). Only one resilient finger portion need be provided instead of the two in another embodiment, Fig. 17. A folding element as in Fig. 19 tucks the cover sheet beneath the tray base and has a central protuberence 462 to locate the sheet. The finger, portions in all embodiments may contain heating elements such as 160S Fig. 17, 162 Fig. 19, to heat seal cover sheets in position.
Patent GB-478766-A (GB)
Title: Improvements in or relating to the projection of multi-coloured cinematograph pictures
IPC: G03B33/00
Filed: 1936-12-17
Abstract: 478,766. Projecting colour - record kinematograph images. KAMPFER, A. H. Dec. 17, 1936, No. 34685: Convention date, Nov. 25. [Class 97 (i)] Colour-record images grouped within a normal image frame on a film are each illuminated by a separate bundle of light rays, and the components of a multiple projection lens are each adjustable in any direction in a plane normal to the axis of projection. The separate light beams may be produced from a single light source by means of a single condenser and a separate condenser for each image, or by means of a single reflector, divided into parts which are universally adjustable, and a single condenser. Each component F of the multiple projection lens is mounted in a separate frame a adjustable on a separate carriage b by means of a screw c, the carriages b being separately adjustable by screws d. The frames and carriages are respectively held in place on a table h by springs e, f, the table being laterally adjustable on a support k. The support k has a stud m extending between the ends of adjusting screws n', n<2> by which it is rotatable about the axis of projection on a screw-thread connecting it to a ring l. A support p for a sliding filter frame q may be provided in front of the lens mount.
Patent GB-1479479-A (GB)
Title: Process for the manufacture of slit sheets and apparatus for carrying out this process and slit sheets obtained thereby
IPC: B21D31/04
Filed: 1974-08-07
Abstract: 1479479 Shearing; making expanded metal, stretching LE METAL DEPLOYE 7 Aug 1974 [9 Aug 1973] 34879/74 Headings B3W, B3A and B3E Metal sheet to be slit preparatory to expanding it is fed continuously to at least one pair of rotary tools 34, 37, Fig. 1, each tool comprising a metal disc with slots 44, Fig. 4, in which cutting strips 46 are secured having cutting edges 52, 53, formed by parallel planar sidefaces (47), (48) Fig. 6 (not shown) connected by an outer face 50 curved about the axis of rotation of the tool, and disposed at an angle of at least 45 degrees to that axis. The slots are so spaced that a strip on one tool engages between two strips on the other tool with a cutting clearance. The strips are of e.g. tungsten carbide or steel and are secured in the slots by adhesive or magnetism. The rear cutting edge 53 may as shown be interrupted by a slot 54 which caused a break in the slot formed by each strip. Each strip includes a spacer shunt 1, additional spacers 35, Fig. 2, may be used. A series of pairs of tools such as 37 and 34, Fig. 1 are keyed to sleeves 36, 30 respectively on shafts 7 and 8. For bringing the tools into shearing relation the shaft 8 is mounted on bearings 10, 12 which are slidable vertically on blocks 14 by means of nuts 15, Fig. 1, rigid with the bearings and fixed against rotation relative to the frame 16 by rods 17. Pinions 20 driven by a common worm 21 rotate spindles 18 in threaded engagement with respective nuts 15 to move the bearings synchronously. The shaft 8 is driven by a variable speed motor via belt and pulley 25 and reduction gear 24 connected to the shaft by a double Oldham joint to allow for the vertical adjustment of the shaft. The shaft 7 and smoothing rollers 1 and 2 are also driven from the reduction gear 24. The shaft 7 can be disconnected from the drive for angular adjustment relative to the shaft 8. The slit sheet, which may have longitudinal ribs formed in it by conventional shaping means is drawn by tension applied to the ribs perpendicularly to the feed direction F to form an expanded metal sheet.
Patent GB-1393911-A (GB)
Title: Igniter composition
IPC: C06B43/00
Filed: 1972-07-26
Abstract: 1393911 Igniter compositions UNITED AIRCRAFT CORP 26 July 1972 [17 Sept 1971] 35017/72 Heading C1D An igniter composition for a gas generator comprises a mixture of iron and a chlorate, e.g. sodium chlorate, together with borax as a burning rate retarder. Other ingredients referred to are dextrin, aluminium oxide, asbestos, and chopped glass fibres. In comparative compositions, the borax is replaced by boric acid, sodium phosphate, calcium chloride, and magnesium sulphate. The gas generator may be the source of oxygen in a portable cutting torch as described in Specification 1,393,912.
Patent GB-1535931-A (GB)
Title: Gas cookers
IPC: F24C3/12
Filed: 1975-08-26
Abstract: 1535931 Hot-plate gas cookers; burners SCHWANK GmbH 26 Aug 1975 35153/75 Headings F4W and F4T A gas cooker comprises radiation burners 65 each with a perforated ceramic burner plate, a common glass ceramic plate 64 spaced above the burners, a sensing device 77 and a valve 69 for interrupting gas flow to the burners when the temperature of the plate 64 and/or the exhaust gases exceeds a predetermined value, a solenoid valve 73, and a power control device 72 operative to periodically open and close the valve 73 to permit and prevent gas flow to the burners, thereby to prevent overheating of the plate 64. The device 72 is variable to adjust the duration of the open and closed periods of valve 73. The sensing device 77 is in circuit with a flame failure detecting thermocouple 76. The burner 65 is part of a burner assembly having an ignition burner 74, and the valve 69 is adjustable to supply gas to either burner 74, 65 or to both. As shown in Fig. 3, the burner assembly may include plenum chambers 32a, 33a associated with a common perforated ceramic plate 31 having an unperforated region 31c, the chambers being supplied with gas via nozzles 37, 38 and venturi tubes 35, 36, combustion air being drawn in via openings 41, 42. The chambers 32a, 33a may be concentric and circular or side by side and rectangular, (Figs. 5, 6). The venturi tubes 35, 36 may be replaced by a single tube subdivided into two passages by a longitudinal partition (82, Fig. 9). The burner assembly shown in Fig. 13 comprises a liquid filled gas flow control thermostat 89 in resilient contact with the glass ceramic plate 102. A wall 85 made of ceramic fibres surrounds the burner plates 83, 84 and includes an exhaust gas outlet. An insert (87a, Fig. 12) on the edge of the burner plate 83 may define an ignition burner. Each burner plate may comprise circular recesses 98 in its gas outlet surface, through passages 99 regularly spaced about and bisected by the perimeter wall of each recess, through passages 100 extending through the centre of each recess and through passages 101 centrally between adjacent recesses 98. The glass ceramic plate is spaced 10 to 15 mm. from the upper surface of each burner.
Patent GB-339762-A (GB)
IPC: C03C27/10
Filed: 1929-11-18
Abstract: 339,762. Celluloid Corporation. Nov. 24, 1928, [Convention date]. Compound sheet materials.-Laminated articles having interposed sheets of cellulose derivative have combined with the cellulose derivative sheet non-volatile plasticizers such as dibutyl tartrate and triacetin. Fire retardants, e.g. tricresyl phosphate or triphenyl phosphate, and stabilizers such as urea and dyes preferably of violet hue, may also be added to the cellulose derivative sheet. The sheets are made from suitable solutions, e.g. cellulose nitrate 100 parts by weight, dibutyl phthalate 50-75 parts, urea 1 part dissolved in ethyl alcohol or cellulose acetate 100 parts, triacetin 60 parts dissolved in acetone or a mixture of acetone, ethyl or methyl alcohol. The sheets are formed preferably 1-16th inch thick and if thinner have a higher proportion of plasticizer. The sheets when dried and cured are assembled with adhesive between sheets of glass and pressed at a suitable temperature to form a continuous layer of about 0.02 inches in thickness. Specification 305,694 is referred to.
Patent GB-1048479-A (GB)
Title: Improvements in or relating to blades, vanes or struts for gas turbine engine axial flow compressors
Inventor: KEENEN JOHN GREGORY
IPC: F01D9/06
Filed: 1959-10-17
Abstract: 1,048,479. Gas turbine plant; compressor rotors and blades. ROLLS-ROYCE Ltd. Oct. 5, 1960 [Oct. 17, 1959], No. 35201/59. Headings F1G and F1T. An axial-flow compressor of a gas turbine jet propulsion engine comprises a cylinder 16 connected at one end to an air intake 14 and at the other end to combustion equipment 15. A shell 17 formed of two semi-circular portions carries stator blades 11 and has ribs 18 whereby it is spaced from the inner surface of the cylinder 16. The cylinder 16, shell 17 and blades 11 are of reinforced thermosetting resin, the blades 11 being secured by an adhesive in slots provided in the shell. The inner ends of the blades 11 are similarly secured to annular shrouds 31 of U-shaped cross-section and formed of reinforced thermosetting resin, each shroud comprising two semi-circular portions (Fig. 4, not shown). The air intake casing 22 of reinforced thermosetting resin is supported from a central bullet 23 by guide vanes 24. Each vane, Fig. 3, consists of an outer skin 35 of reinforced thermosetting resin and filled with a foamed thermosetting resin 36. Conduits 37 extending radially through the vane may carry oil, cooling air or fuel. The rotor blades 12 and discs 33 are of reinforced thermosetting resin and form a drum 13 mounted for rotation in a bearing 34 supported by the vanes 24. A sleeve 26 connected to the downstream end of the cylinder 16 carries outlet guide vanes 27, the sleeve and vanes being formed of reinforced thermosetting resin. Dog teeth formations 19, 20 provided on the end surfaces of the shell 17 co-operate with similar formations provided on the ends of the casing 22 and sleeve 26 to prevent rotation of the shell within the cylinder 16. The spaces between the shell and cylinder are vented to atmosphere by apertures 30 in the cylinder 16.
Patent GB-1122054-A (GB)
Title: Manufacture of grip-hole carrier bags
IPC: B31B19/86
Filed: 1965-08-17
Abstract: 1,122,054. Carrier bag. WINDMÍLLER & HÍLSCHER. 17 Aug., 1965 [24 Aug., 1964], No. 35260/65. Heading A4G. In a process of and apparatus for making griphole carrier bags from heat-sealable material, two layers 26, 27 of plastics web are moved forwardly intermittently by rollers 21, 22, and during standstill periods the holes 7 are cut by a platen 25 moving on to a fixed die 24, the pieces removed being blown away by air through platen opening 28. The two layers are then spaced apart, at least adjacent the holes, e.g. by a spacer 31 and two ribbons of joined griphole reinforcements 17, 18 are fed to the web outer surfaces where, during a standstill, opposed pressure jaws 46, 47 ensure that a heating element 34 on the spacer heat seals the reinforcements around the holes. Finally the web is heat sealed transversely to form the bag bottom by welding jaws 52, 53 and cut by knife 54, 55. The apparatus can form bags from plain or edge pleated tubing with a transverse bottom seal and cut or from a side folded or pleated web with two side seals and cuts. The oval reinforcements may be joined by one part on the long axis or by two parts on the short axis to form the ribbon. If the reinforcements are placed on the inner surfaces of the web, the ribbon may be directed laterally between the webs using an internal knife with external sealing jaws or the edges of the web may be displaced at right angles to each other by guides to enable ribbon feeds and sealing jaws at right angles to each other to secure the reinforcements. The reinforcements may also be positioned by laterally pushing them from a pile and may be provided in pairs with closure snap fasteners.
Patent GB-1475707-A (GB)
Title: Combustion chambers for gas turbine engines
IPC: F23R3/34
Filed: 1974-08-09
Abstract: 1475707 Gas turbine combustion chambers MOTOREN-UND TURBINEN-UNION MUNCHEN GmbH 9 Aug 1974 [18 Aug 1973] 35275/74 Heading F1L Liquid or gaseous fuel is supplied to the flame tube 2 of a gas turbine engine via tubes 10, 11 opening into primary air ports 5, 6 adjacent the side of the respective port nearest to the flame tube upstream end-wall 14. In Fig. 1 the tubes 10, 11 direct the fuel generally radially towards the flame tube centre, but in a modification, Fig. 3, they direct it axially against curved baffles 17'. Each of the latter is carried by a nozzle member 16 coaxial with the respective port 5, 6. Member 16, carries a fuel tube connector 17. In a further modification Fig. 4 (not shown) member 16 is mounted inside rather than outside flame tube 2 and the baffle (18) is flat. To assist fuel vaporization, tubes 10, 11  may be mounted in the space between upstream wall 14 and a lining wall (15) Fig. 2 (not shown).
Patent GB-393341-A (GB)
Title: Improvements in or relating to plate heat-exchanging apparatus such as furnace air heaters or cooling radiators
IPC: F28D9/00
Filed: 1931-12-21
Abstract: 393,341. Air - heaters for furnaces. TENNANT, W. J., 111, Hatton Garden, London.-(Aktie bolaget Ljungstroms Angturbin; 32, Kungsgatan, Stockholm.) Dec. 21, 1931, No. 35312. [Class 51 (i).] In an air-preheater for a furnace in which the air and furnace gases flow continuously simultaneously, and without mixing through separate channels in the apparatus, at least one of the larger surfaces of a channel is formed bv a plate 4 having corrugations which run diagonally to the direction of flow to set up whirls in the fluid in the channel in the same manner as in the similar pile of plates used as a heat regenerative mass in Specification 363,357. The heater is formed of packs of plates held between end pieces 11, each pack being held together by bolts 9. Hot gases pass between the plates as shown by arrows 17 and air passes through alternate passages as shown by arrows 18. The whole pile of plates is attached to angle irons 10 resting on further angle irons 13, 13<1>, freedom being given for expansion in all directions. To clean the plates of soot a steam pipe 21 furnished with jets is moved under the plates by a rack and wheel 25, 26.
Patent GB-924239-A (GB)
Title: Improved explosive composition
IPC: C06B31/32
Filed: 1961-09-29
Abstract: Sorbitan tetranitrate is obtained by adding 100 parts by weight of sorbitan at 50-100 DEG C. to 600 parts of a nitrating mixture of 37% of nitric acid and 63% of concentrated sulphuric acid. 67-335 parts of methylene chloride is then added and the mixture vigorously agitated.  After standing the methylene chloride layer is washed with water and sodium carbonate solution and the chloride evaporated at 40 DEG C. to give the tetranitrate as a viscous brown product.