baber/WOPTO huggingface dataset:
Patent GB-1454030-A (GB)
Title: Dual-nature screen process
IPC: G03C8/30
Filed: 1974-02-21
Abstract: 1454030 Colour screen containing colour coupler GAF CORP 21 Feb 1974 [2 March 1973] 8036/74 Heading G2C A colour screen of one to three colours comprises an array of red or green or blue coloured oil droplets each droplet containing a non-diffusing filter dye having one of the primary colours and a colourless colour coupler fast to diffusion in aqueous gelatine matrices having a pH of 6À0 to 7À0 but diffusible through such aqueous gelatine matrices at a pH higher than 7À0 and capable of forming non- diffusing cyan or magenta or yellow dyes, respectively, on coupling with oxidized p-phenylenediamine colour developing agent, the micro areas possessing red or green or blue filtering action being exactly those containing cyan or magenta or yellow colour couplers, respectively. The colour screen may comprise an adjacent panchromatic silver halide emulsion layer and an image may be formed by exposing the emulsion through the screen, developing the emulsion with an appropriate colour developer of alkaline pH while the emulsion is in contact with a receiving element to which the colour couplers in the screen in the unexposed areas transfer and forming indoaniline or azomethine dyes in the receiving layer from the transferred colour coupler, by coupling with a paraphenylene diamine colour developer in the presence of an oxidizing agent. The receiving element may be separated from the panchromatic emulsion and screen or may remain intact for viewing. The screen and panchromatic emulsion may form part of a film unit which also comprises a rupturable container containing processing composition, an image-receiving layer and optionally an opaque layer or layers see Figs. 8-15 (not shown). The yellow, cyan and magenta couplers specified are x-benzoyl-o-methoxyacetanilide, N-(α-acetamido-phenethyl)-1-hydroxy- 2-naphthamide and 1-(2,4,6-trichlorophenyl)-3-pnitroanilino-2-pyrazolin-5-one, respectively.
Patent GB-1453484-A (GB)
Title: Purification of a-amylase
IPC: C12N9/26
Filed: 1974-02-22
Abstract: 1453484 Separating amylase from biological extracts BAYER AG 22 Feb 1974 [24 Feb 1973] 8077/74 Heading C3H A process for the separation of α-amylase from a biological extract comprises adsorbing the α-amylase from the biological extract on to an α-amylase inhibitor which is carrier-bound to one of the following resins: copolymer of tetraethylene glycol dimethacrylate, methacrylic acid and maleic acid; aminoethylcellulose activated by reaction with cyanogen bromide, copolymer of N,N<SP>1</SP>-methylene-bisacrylamide, acrylamide and maleic acid; washing the formed α-amylase-α-amylase-inhibitor-complex with aqueous solutions and describing the α-amylase with the aid of a starch solution. The resin used is preferably a bead copolymer of 70 weight per cent tetraethylene glycol dimethacrylate, 20 weight per cent methacrylic acid, and 10 weight per cent of maleic acid anhydride, and the inhibitor is preferably derived from a micro-organism of the genus Actinomyces.
Patent GB-590288-A (GB)
Title: Improvements in high drafting mechanism for spinning frames
IPC: D01H5/88
Filed: 1945-03-30
Abstract: 590,288. Guides for belts of drawing apparatus. SCHOFIELD, E. J. [Representative of SCHOFIELD, J.] and SCHOFIELD, Jun., J. March 30, 1945, No. 8085. [Class 120 (ii)] In order to reduce the rubbing action between belts and cradles in high draft apparatus substantially vertical projections are arranged on the cradles, preferably near the front. The invention is described in connection with a cradle of the type described in Specification 497,507, having an upper part A and lower part B. The projections e may be integral with the sides of the cradle and may be in two. parts. Alternatively, projections, either in the form of stationary rods or small rollers, may be secured in slots in the cradle sides.
Patent GB-198484-A (GB)
Title: Improvements in feed water heaters for boilers
IPC: F22D1/20
Filed: 1922-03-21
Abstract: 198,484. Addyman, W. P. March 21, 1022. Feed-water, heating.-The headers A, B of a fuel economizer are cylindrical and divided into compartments, the top of each compartment in the header A being connected by a single tube C with the bottom of a compartment in the header B, and vice versa. Specifications 4270/08, 107,140, and 169,679 are referred to.
Patent GB-346940-A (GB)
Title: Improvements in and relating to apparatus for working fused silica
IPC: C03B32/00
Filed: 1930-03-13
Abstract: 346,940. Fused silica. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House. Aldwych, London.- (Assignees of Millar, G. A. ; 78, 8th Street, Ridgefield Park, Bergen, New Jersey, U.S.A.) March 13, 1930, No. 8199. Convention date, March 13, 1929. [Class 56.] A device for clearing the walls of a hollow article of fused silica from imperfections, such as gas bubbles and surface irregularities, comprises means for heating the article until it is plastic and means for applying internal air pressure and an external mould in order to preserve the shape of the article. Figs. 1 and 2 show in elevation and plan, respectively, a machine for clearing the walls of silica tubing. A bedplate 3 supports parallel horizontal rods 8, 9 on which a block 12 slides, a similar block 6 being secured to one end of the bed. The block 12 can be moved to and fro on the rods by the rotation of a hand - wheel 16. Hollow chucks 29, 30 are mounted on the blocks 6, 12 respectively, and are geared to a telescopic shaft 27,28 which is journalled in the blocks and is rotated by a motor 55, the gearing to the shaft being so arranged that the chucks are rotated in unison with one another. The chucks are kept closed by springs and are opened by means of bell-crank levers 39, 44. A carriage 66 slides on the rods 8, 9 and can be moved to and fro along the rods by rotating a handwheel 89. The carriage supports an oxyhydrogen blowpipe 74, an eye-protecting screen 73, and a flat mould 91. The mould is secured to a shaft journalled in the carriage, and it can be raised by a pedal 101 into contact with the tube held by the chucks. In use, a silica tube 61 having one end closed is passed through and gripped by the chucks, and it is then rotated by the motor 55 while a section is heated by the blowpipe 74. As soon as the silica becomes plastic, the bubbles contained in it disappear and surface pits become smoothed out, thus causing the tube to become more transparent. While it is being heated, air under pressure is supplied to the interior of the tube through a hose 63 in order to prevent the walls from collapsing. The hose 63 is fitted with a byepass 64, and the operator can regulate the pressure within the silica tube by placing his finger over the open end of the byepass. As soon as the silica has become transparent, the mould 91 is raised and air pressure is increased to expand the tube into contact with the mould. In this way, the expanded section of the tube is cleared and brought to a uniform diameter, and a new section is then brought between the chucks.
Patent GB-250006-A (GB)
Title: Improved ventilator valve and draught regulator
IPC: B63J2/10
Filed: 1925-03-27
Abstract: 250,006. Kennedy, D. March 27, 1925. Ventilators; valves and valve apparatus.-A ventilator for ship cabins, motor vehicles, railway carriages &c. comprises a stationary flanged apertured segment 1, around which a similar shaped and apertured segment 15 is adapted to be rotated, and a lower dished disc 5 supported by a tube 6 connected to the upper part of the stationary segment 1 and provided with an annular groove 8 for the reception of an apertured and rotatable drum 9. The upper part of the drum 9 is received in a groove 10 provided in the flange 2 of the stationary segment 1. The apertures in the drum 9 are in the form of a number of ports 11, and a knob 13 is provided for rotating the drum so as to regulate the direction of the flow of air. A shaft 16 disposed in the tube 6 and connected to the rotatable segment 15 is provided at its lower end with a handle 18 whereby the position of the said segment and size of the air inlet can be regulated. In a modification, Fig. 4, the dished member is replaced by a cup-shaped member 19, and the drum is of tapered form in order to direct the air downwards.
Patent GB-529303-A (GB)
Title: Improvements in and connected with power wringers
IPC: D06F45/18
Filed: 1939-03-15
Abstract: 529,303. Wringers. LOVELL MANUFACTURING CO. March 15, 1939, No. 8304. Convention date, March 22, 1938.. [Class 138 (ii)] Means for applying the pressure to the rollers of a wringer from the power shaft 27 that drives the machine comprise a nut 42 having an internal thread with which a pin on the shaft engages. A ring 48 having friction surfaces 49 is rotatably and tiltably, but not slidably, mounted on the nut and is normally drawn by a spring 51 so that its friction surfaces engage the nut. On rotation of the shaft 27 the nut, being held against rotation by the friction, moves axially taking the ring 49 with it and the latter applies the pressure to the rollers through the lever 54 and equalizing bar 62. The pressure is limited by the engagement of a projection 52 on the ring with an adjustable stop 53. This causes the ring to tilt clockwise and release the friction surfaces from engagement with the nut which then rotates with the shaft 27 without axial movement. The pressure is released and the drive to the rollers stopped by disconnecting the shaft 27 from the prime mover; this effected by a pedal. The pressure may alternatively be released by unlatching the top frame member 59 by means of the latch 66, the' lever 54 being pivoted in the member 59. The rollers are normally pressed apart by springs 10. In a modification the friction ring is replaced by a disc.
Patent GB-1422031-A (GB)
Title: Organopolysiloxane compositions convertible to elastomers
IPC: C08L83/04
Filed: 1973-02-20
Abstract: 1422031 Fire-resistant silicone rubber compositions RHONE-POULENC SA 20 Feb 1973 [21 Feb 1972] 8320/73 Heading C3T A fire-resistant elastomer-forming organopolysiloxane composition comprises (a) 100 p.b.w. of a polydiorganosiloxane gum of viscosity 2 x 10<SP>6</SP>-80 Î 10<SP>6</SP> cP./25‹ C., free of Sibonded H atoms, in which the organo groups are alkyl, alkenyl or aromatic hydrocarbon radicals, which may be halogenated, a maximum of 50% of the total organo groups being aromatic and at most 2 wt. per cent of the gum being alkenyl groups, (b) 5-100 p.b.w. of a finely divided silica filler, (c) 0À1-10 p.b.w. of an organic peroxide, (d) 10 x 10<SP>-4</SP> to 150 x 10<SP>-4</SP> p.b.w. of a Pt-containing additive (expressed as Pt) and (e) 0À5-25 p.b.w. of MgO. Conventional fillers, plasticizers and stabilizers may be present, and also 0À1-3 p.b.w. of ZnO and/or SnO 2 , TiO 2  or a metal phosphate. In the examples compositions are prepared containing 112À5 p.b.w. vinyl-containing polydimethylsiloxane gum, 42-52 p.b.w. treated pyrogenic silica, 0À45 p.b.w. iron octoate, 0À98 p.b.w. low molecular weight polydimethylsiloxane diol, 0À98 p.b.w. tetramethylethylenedioxy dimethylsilane, 6-13À5 p.b.w. MgO, optionally 2À6 p.b.w. SnO 2 , 1À74 p.b.w. TiO 2  or 1À73 p.b.w. Mg 3 (PO 4 ) 2 , and 2À44 p.b.w. H 2 PtCl 6 -silicone oil paste; they are cured using 2 : 4-dichlorobenzoyl peroxide.
Patent GB-564662-A (GB)
Title: Improvements in or relating to bearings
IPC: F16C33/26
Filed: 1943-05-26
Abstract: 564,662. Bearings. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. May 26, 1943, No. 8395. Convention date, May 28, 1942. [Class 12 (i)] In a bearing, such as a stern tube bearing, consisting of longitudinal staves retained by keeper strips and provided in their bearing faces with lubricant grooves 44, some of the staves have a slot 46 in their base parts to compensate for expansion. The staves and keeper strips may be formed by laminated fibrous material such as paper, cloth, or glass fabrics impregnated by thermoplastic materials and machined to provide an edge bearing surface. The keeper strips 20, 22 divide the staves into two equal groups, each group consisting of doubly-grooved staves 28, 34, singly-grooved staves 30, 32, doubly-wedged staves 36 and the slotted staves 26. Each slot 46 has a number of support members to prevent complete closing of the slot. After assembly, the staves are machined to the bearing surface 50. Specifications 480,530 and 552,090, [both in Group IV], are referred to.
Patent GB-357073-A (GB)
Title: Improvements relating to the coating of pipes and the like
IPC: B28B19/00
Filed: 1930-10-31
Abstract: <PICT:0357073/III/1> To coat the pipe a the molten coating material is supplied to the upper part of the mould which is heated by the steam jacket m<7>.  The pipe is then slowly lowered by the ram k<1>, the coating being cooled by passing water in the jacket m<8>, and by spraying from pipe n<1>.
Patent GB-678631-A (GB)
Title: Improvements relating to mechanically-released electrical switch devices
Inventor: PORTER CYRIL IRWIN
IPC: H01H35/00
Filed: 1950-04-04
Abstract: 678,631. Switches held set and freed mechanically. NEWMAN, J. B., and PORTER, C. I. April 4, 1951. [April 4,1950] No. 8441/50. Class 38 (v). A switch which is arranged to be operated in response to a slight abnormal relative displacement of two parts of a machine, e.g. a press, comprises a slidable contact 5 normally held in bridging engagement with two fixed contacts (not shown) against the action of a spring 9 by a locking element 19 on the longer limb 16 of an L-shaped lever, the shorter limb 17 of which is pivoted at 18, 15 to members 1, 12, respectively connected to the two parts of the machine. The member 1 carries the fixed contacts and lugs 7, 8 in which slides a rod 6 on which the contact 5 is mounted. The part 12 is threaded into a nut 13 having two parts held together by screws 13<SP>1</SP> and holding between them the enlarged head 11 of a member 10 fixed to one of the machine parts, rotation of the nut 13 causing vertical adjustment of the member 12. Relative movement apart of the machine parts tilts the lever 16 counterclockwise to move the element 19 from latching engagement with an element 20 on the rod 6 so that the contacts span. The switch parts may be reset by depressing the rod 6, the faces of elements 19, 20 being bevelled to permit them to slide over one another.
Patent GB-1208834-A (GB)
Title: Improvements in or relating to marine off-shore structures
IPC: E21B15/02
Filed: 1968-02-21
Abstract: 1,208,834. Articulated marine structures; wells &c. COMPAGNIE FRANCAISE D'ENTREPRISES METALLIQUES. 21 Feb., 1968 [24 Feb., 1967], No. 8474/68. Headings E1F and E1H. A marine off-shore platform 1 comprises a base 6 fixed to the marine bed a column 2 pivotally connected by universal joint 4, 5 to the base and floats 35 at the upper end of the column to ensure its hydrostatic stability. In the embodiment shown a plate 18 mounted on the lower end of the column surrounding the universal joint is brought into position on the base by guide pins 17. The base 6 can be perforated at its bottom 9 to permit the drilling of well 10 as a continuation of central well 3. (For Figure see next page)
Patent GB-871863-A (GB)
Title: Improvements relating to the production of accurately formed reflecting surfaces
Inventor: ROBERTS ROBERT ELLIS
IPC: B44F1/04
Filed: 1957-03-14
Abstract: 871,863. Moulding optical surfaces. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. March 6, 1958 [March 14, 1957], No. 8481/57. Class 87(2). A method of moulding an accurately formed surface, e.g. optical flat, on a base layer comprises covering the base layer 1 with a settable material 3 capable of moulding and of adhesion to the base layer, e.g. "Araldite" (Registered Trade Mark), and pressing a forming surface 4 against the coated base layer to expel all but a relatively thin layer of the coating material to mould the surface. The forming surface, prior to pressing is coated with a parting agent 6, e.g. "Teepol" (Registered Trade Mark) which has a film of reflective material 5, e.g. silver, which adheres to the moulded surface.
Patent GB-541147-A (GB)
Title: Improvements in or relating to induction furnaces
IPC: H05B6/42
Filed: 1940-05-13
Abstract: 541,147. Distilling metals. LANCASHIRE METAL SUBLIMING CORPORATION, Ltd.. and HAMILTON, W. B. May 13, 1940, Nos. 8564 and 10036. [Class 82 (i)] [Also in Group XI] An induction furnace for carrying out metallurgical processes comprises an inner lining or crucible 10 of firebrick, an outer shell 11 of porcelain with a packing of slag wool 13, and a hood 26, 31 sealed by a rubber gasket 36 which is cooled by the circulation of water through a hollow flange 32. The shell 11 is supported on a porcelain base 14 with an interposed rubber gasket 15.- Porcelain insulators 20 are supported between rings 18, 19 and carry a high frequency coil 21 of copper tubing through which cooling water is circulated. A condenser 25 is supported on the crucible, and is of smaller diameter than the crucible to limit expansion of the vaporized material. The lid 28 is apertured at 29 to permit the creation of the required vacuum in the furnace. The hood is double walled' and water is circulated through the jacket. In a modification, a conduit for cooling water may be provided in the shell 11 adjacent to the gasket 36.
Patent GB-558290-A (GB)
Title: Improved method of obtaining oil from fish livers
IPC: C11B1/10
Filed: 1942-06-23
Abstract: 558,290. Extracting fish liver oils. NATIONAL OIL PRODUCTS CO., June 23, 1942, No. 8575. Convention date, June 13, 1941. [Class 91] Fish liver and like oils containing fat-soluble vitamins are obtained from fish livers and like tissue by mixing the comminuted livers with an oil adsorbent vegetable meal, digesting the mass at a temperature of below 100‹C. in the absence of oxygen. and then separating the oil from the mass. The digestion is preferably effected in an alkaline medium to inhibit the reactivities of the lipolytic and the proteolytic enzymes. The oil may be separated by mechanical means or by solvent extraction. The digestion temperature is preferably aibout 80‹C. The vegetable meals or flour specified comprise cottonseed meal, corn germ meal, oatmeal, sesame meal, wheat germ meal and soya bean meal and also rice' bran and wheat bran. The fish material may include the livers of whales and other aquatic mammals and also the body parts of small fish such as sardines, herrings and menhaden. The meal, &c. is preferably used in the proportion of 1 to 2 parts per 1 part of liver when alkali is absent and from 5-20 parts per 100 parts of liver in the presence of added alkali. The latter may comprise the alkali hydroxides or carbonates, calcium hydiroxide or calcium oxide, the proportion preferably not exceeding 5 per cent. dry weight on the weight of the livers. The solvents specified comprise ethylene dichloride, trichlorethylene, heptane, dichloroethyl ether, ethyl ether, petroleum ether, chloroform and cyclohexane. The solvent-oil mixture may be purified by the processes described in Specifications 535,014 and 537,403 prior to removal of the solvent.
Patent GB-313996-A (GB)
Title: Improvements relating to vehicle electric lamps
IPC: B60Q1/14
Filed: 1928-03-21
Abstract: 313,996. Lucas, Ltd., J., and Lucas, O. March 21, 1928. Adjusting reflectors from a distance. - A vehicle lamp is fitted with one or more electromagnets for rocking a reflector and with a switch which automatically controls the time interval during which current is supplied to the electromagnets, the interval preferably being no longer than is necessary to ensure complete movement of the reflector. In the form shown in the Figure, a reflector a is mounted on an 'horizontal or inclined axis b and carries at the rear a pair of insulated contacts f connected to a battery g and adapted to co-operate with contacts i on the spring-controlled plungers h of a pair of electromagnets d fixed within the lamp casing c. A toggle-spring o may be arranged between the reflector and the lamp casing. When a finger lever j is moved from one stop m towards another, a toggle-spring k is stressed and, after it passes its central position, imparts a rapid movement to a switch arm e from one stop l to another. During this movement the arm e passes over a contact p and momentarily closes the circuit of the lower electromagnet d, the plunger of which rocks the reflector into the inclined position. The movement of the arm e may be regulated as by means of a dash-pot, and the reflector is returned to its original position by a reverse movement of the lever j. The two electromagnets d may be replaced by a single reversible electromagnet, or a pair of magnets forming a single unit.
Patent GB-1418074-A (GB)
Title: Production of ammonium polyphosphates
IPC: C01B25/28
Filed: 1973-02-22
Abstract: 1418074 Ammonium polyphosphates SOC CHIMIQUE DES CHARBONNAGES and APPAREILS ET EVAPORATEURS KESTNER 22 Feb 1973 [23 Feb 1972] 8686/73 Heading C1A Ammonium polyphosphates are prepared by a process comprising mixing two fluid streams, one of gaseous ammonia and the other of liquid phosphoric acid, in which process: the liquid phosphoric acid is at a temperature of from 90‹ to 125‹ C. and has a P 2 O 5  concentration of from 58 to 65%; the stream of liquid phosphoric acid is injected axially into the stream of gaseous ammonia; the gaseous ammonia is used in an excess of substantially 15% in relation to the stoichiometric amount in the reaction resulting in the formation of mono-ammonium phosphate; the flow rate of the stream of gaseous ammonia where the liquid phosphoric acid is injected into it is from 50 to 200 m./s., and; the average flow rate of the gaseous stream in the reaction zone is approximately 170 m./s. The process is preferably carried out in an apparatus comprising an outer tube into which the ammonia is fed and an inner concentric tube, carrying the phosphoric acid, terminating in an enlarged end provided with means for dispersing the phosphoric acid, and a reaction chamber with a length of 1À6 to 2 times the diameter of the external tube.
Patent GB-898914-A (GB)
Title: Improvements in or relating to drawing office and similar stools
IPC: A47C7/52
Filed: 1959-03-13
Abstract: 898,914. Seats. ABBOTT, S. N. June 13, 1960 [March 13, 1959], No. 8689/59. Class 52(2) A stool or chair comprising a seat 10 mounted on a post 11 swivelly and telescopically connected to a centre column 12, and a spring influenced backrest 13 adjustable by means of a handwheel 14 has a foot-rest 19 secured to the seat 10 by means of tubular metal members 17 so as to be rotatable and vertically adjustable therewith.
Patent GB-414322-A (GB)
Title: Percussive drilling tools
IPC: E21B17/042
Filed: 1934-03-20
Abstract: 414,322. Percussive drills. INGERSOLL-RAND CO., 15, Exchange Place, Jersey City, New Jersey, U.S.A. March 20, 1934, No. 8712. Convention date, April 19, 1933. [Class 124.] The cutter A is secured to the shank B by a screwthread the face T of which is at a smaller inclination to the axis than the face Q, the former sloping away from the cutter so that it takes no thrust. The whole of the thrust is taken up by the end face G of the shaft engaging the bottom face H of the recess.