baber/WOPTO huggingface dataset:
Patent GB-796583-A (GB)
Title: Improvements in or relating to extrusion of polytetrafluoroethylene
IPC: B29C48/09
Filed: 1955-06-21
Abstract: An extrudable paste-like mixture comprises polytetrafluoroethylene (P.T.F.E.), a volatile organic liquid lubricant and a substance that absorbs the lubricant.  The lubricant-absorbent substance, which may be carbon black, silica flour or diatomaceous earth, is of a particle size below 100 millimicrons and the amount used is 0.01 to 5 per cent of the weight of the P.T.F.E.  The lubricant may be solution of polyisobutylene in naphtha, or cetane (i.e. hexadecane). Aluminium oxide may be used as a filler.  Specification 686,438 is referred to.ALSO:A paste-like mixture of polytetrafluoroethylene (P.T.F.E.), a volatile organic liquid lubricant and a lubricant-absorbent material is extruded to form an article which is then heat-treated to remove the lubricant and sinter the P.T.F.E.  The lubricant-absorbent material is of a particle size below 100 millimicrons, and the amount used is 0,01 to 5 per cent of the weight of the P.T.F.E.  This material, which may be carbon black or silicious material, e.g. silica flour or diatomaceous earth, appears to bring about and maintain a better distribution of the lubricant in the mixture.  The lubricant may be a solution of polyisobutylene in naphtha, or cetone (i.e., hexadecane).  The mixture may be made into briquettes which are then placed in an extrusion chamber from which they are forced to form thin-walled tubing.  Specification 686,438 is referred to.
Patent GB-1098927-A (GB)
Title: A new or improved blind aid
Inventor: KAY LESLIE
IPC: G01S15/34
Filed: 1965-04-29
Abstract: 1,098,927. Sonic blind-aid. NATIONAL RESEARCH DEVELOPMENT CORPORATION. March 15, 1966 [April 29, 1965], No. 17983/65. Heading H4D. In a sonic blind-aid in which acoustic energy is radiated to a field of view and received after reflection from an object therein by a transmitter-receiver system incorporating two receiving transducers mounted on a head set the transmitting and receiving transducers are constructed and oriented such that the overall sensitivity of the system has a directivity pattern similar to that of the auditory system of the user to provide natural binaural location of the object. The invention is applicable to the blind aid system of Specification 978,741, and may involve the transmission of frequencymodulated ultrasonic signals which are heterodyned with the received signals (as described in that Specification) to provide audible beat signals which are fed to left- and right-hand earphones, or may involve the conversion of the echo-times of amplitude-modulated (e.g. pulse) transmission signals to range-dependent audible tones. Acoustic energy is transmitted with substantially uniform amplitude (represented by K in the polar diagram of Fig. 1) over an angular field of view H to J, and the principal axes E, F of the directivity lobes C, D are arranged to diverge from the centre of the field of view. In a first embodiment (Figs. 4 to 7), an elongated transmitting transducer (216) is mounted with the receiving transducers (217) on a spectacle frame, the ends of transducer (216) subtending an angle greater than that included by the normals to the receptive surfaces of transducers (217). In a second embodiment (Figs. 8 and 9) two elongated transmitting transducers (316) are mounted on a spectacle frame and their radii of curvature at their inner ends (316f) is arranged to be parallel to or inclined towards central axis (362) to compensate for the reduction in transmitted signal strength along axis (362) which would otherwise occur. The construction of the transmitting and the receiving transducers is described and is similar to that of the transducers of Specification 978,741.
Patent GB-1402511-A (GB)
Title: Pyridone and pyridazone photographic yellow couplers
IPC: G03C7/305
Filed: 1973-04-13
Abstract: 1402511 Two-equivalent photographic yellow couplers KONISHIROKU PHOTO INDUSTRY CO Ltd 13 April 1973 [15 April 1972 27 May 1972] 17990/73 Heading G2C [Also in Division C2]  Photographic yellow couplers are disclosed of the general Formula:- in which X is -N= or -CR=; Cp is a residue  formed by removing one hydrogen atom of the active methylene group of a photographic yellow coupler; n is an integer of 1 to 3; and R is a hydrogen or halogen atom, or an alkyl, alkoxy, alkylcarbonyl, aryl, aryloxy, arylcarbonyl, aralkyloxycarbonyl, amino, acylamino, carboxyl, nitrile, aralkyl or aralkyloxy group provided that if there are 2 or more substituents on the ring they may be the same or different and two adjacent Rs in combination may form a benzene ring. Examples include pyridone, pyridazone and quinalone compounds. The couplers are useful as the so-called protect dispersed type couplers, Fischer's dispersed type couplers or the so-called external couplers where the coupler is present in a developer, or as couplers for use in the diffusion transfer method (see Ex 5). The yellow couplers are applicable to various light-sensitive colour photographic materials susceptible to, for example, ultraviolet rays, visible rays, infrared rays, x-rays, gamma rays or micro-waves.
Patent GB-706180-A (GB)
Title: Improvements in or relating to seed treatments
Inventor: SHAR CHAO-SENG TSI FREDERICK L
Filed: 1950-07-19
Abstract: To protect plants grown from seeds against insect pests, the seeds are treated with a powder, dust or aqueous solution containing bis-(bis-dimethylamino-phosphorous) anhydride in an effective concentration in which the insecticide is substantially non-phytotoxic.  The seeds may be steeped for up to 24 hours in a dilute aqueous solution of 0.03 to 1.0, and preferably 0.5, per cent by weight of the active ingredient.  Alternatively the seeds may be treated with a powder and then planted, with or without an aqueous steeping.  Powders contain an inert absorbent material such as diatomaceous earth, charcoal and Fullers earth.  Other ingredients which may be incorporated are china clay, dispersing agents, e.g. sodium dinaphthyl methane sulphonate, and soil disinfectant and fungicides.  One ounce of bis-(bis-dimethylamino-phosphorous) anhydride is used per bushel of seed.ALSO:A seed treating powder for protecting plants grown from seeds against insect pests comprises bis-(bis-dimethylamino-phosphorous) anhydride and an inert absorbent material, e.g. diatomaceous earth, charcoal and fullers earth, in about equal quantities by weight.  Specified other ingredients are china clay, dispersing agents, e.g. sodium dinaphthyl methane sulphonate, and fungicidal and bactericidal seed treating agents. One ounce of bis-(bis-dimethylamino-phosphorous) anhydride is used per bushel of seed.  The seeds are treated with the powder and are then planted, with or without aqueous steeping.
Patent GB-145758-A (GB)
Title: A new and improved bag or envelope of paper or similar material
IPC: B65D33/24
Filed: 1920-07-02
Abstract: 145,758. Kleebauer, C. P. April 25, 1917, [Convention date]. Bags.-A carrier bag has a supporting-loop, by which it is carried on a finger, and a securing tongue, both formed from the material of the bag by cutting through the bag near the mouth, reinforcing-strips being stuck to those parts of the bag which are cut to form the loop and tab. The bag is formed from a 'blank, shaped as shown in Fig. 1, which when folded along the dotted lines forms a flat bag with a closing-flap 28. Reinforcing-strips or patches 29, 30 are stuck to the blank, and these patches are punched to form a carrying-loop 31, an opening 33, and a securing-barb 32. In use, the closing-flap is secured by drawing the barb 33 through the opening 36, Fig. 3, left in the flap 28 by the formation of the loop 31. In a modification, shown in Fig. 7, the carrying- loop 37 is circular, and the securing-tongle 39 is elongated and with wide barbs. The closing flap 28 is tucked in between the body of the bag and the tongle 39, and the barbs of the tongue are then passed through the loop 37. A second carrying- loop 49 may be formed on the front of the envelope or on the securing-tongue, Fig. 12, and a barb 46 is formed on the main carrying-loop 48.
Patent GB-1477204-A (GB)
Title: Interleaving materials for glass sheets
IPC: B65G49/06
Filed: 1974-04-25
Abstract: 1477204 Protecting stacked glass sheets from staining PILKINGTON BROS Ltd 22 April 1975 [25 April 1974] 18169/74 Heading B8C An interleaving material for separating glass sheets and protecting them from staining comprises a porous finely divided support material, impregnated with a weakly acidic material, and fine particles of a chemically inert plastics. The material may be applied by a powder applicator. The support material may comprise coconut shell flour or hardwood wood flour. The acidic material may comprise adipic, maleic, sebacic, succinic, benzoic, or salicyclic acid, or ammonium chloride. Aqueous or organic solvents may be used to apply the acidic material to the support material with heat or reduced pressure being optionally used to remove the solvent. The plastics material preferably has a larger particle size than the support material and may comprise polyethylene, polystyrene, polytetrafluoroethylene, or a methacrylate polyester. The interleaving material may be between 30 and 300 mesh in size and applied at a rate of between 0À05 and 1 gram/sq. foot of glass.
Patent GB-392372-A (GB)
Title: An improved protected metal article
IPC: D06N5/00
Filed: 1932-06-28
Abstract: 392,372. Bituminous compositions. YOUNG, J. H., 370, Jefferson Drive, Mount Lebanon, JENKINS, P. W., 3620, Terrace Street, and ROBERTSON CO., H. H., Grant Building, 3rd Avenue, all in Pittsburg, U.S.A. June 28, 1932, No. 18191. [Class 22.] Metal articles, particularly metal sheets 10 for roofs and sidings of buildings, are coated with plastic asphalt 12 which contains from 10 to 16 per cent by volume of lampblack, diatomaceous earth, infusorial earth, fossil flour, or like filler and is applied in the plastic state by pressure rollers. The addition of the filler renders the asphalt incapable of coating the article by immersion, but makes it non-flowing and non- dripping when heated or burnt without impairing the flexibility. The coated sheet may be faced with layers 13 of asbestos, wool, or other felt saturated with asphalt, over which is applied a weather-resisting layer of asphalt 14.
Patent GB-1514335-A (GB)
Title: Vehicle body with sliding side curtain
IPC: B60J5/06
Filed: 1976-04-26
Abstract: 1514335 Sliding curtains for vehicle body sides. COOKS (ROAD TRANSPORT ENGINEERS) LTD 26 April 1976 [1 May 1975] 18283/75 Heading B7B In order to minimize the gap between the upper edge of a sliding side curtain 10 and a vehicle body, the curtains and straps 20 bonded thereto are held between parts 17, 18 of plastics runners adapted to slide in grooves 14 at the lower edges of side walls 13 of a rail 11 secured to a vehicle body, and sack strap 20 is also attached at its lower end to a rave 22 of the vehicle body to tension the curtain. When closed, the end edges of the curtain 10 are fastened to the vehicle body and the curtain passes through a vertical tension pole 21A, 21B which is rotatable to wind the curtain and thereby increase its horizontal tension. The upper end of the pole slides in the rail 11 and the lower end is provided with a ratchet lever 24 for rotating the pole. Reference has been directed by the Comptroller to Specification 1,262,880.
Patent GB-279029-A (GB)
Title: Object glass holding arrangement for photographic or cinematographic apparatus
IPC: G03B17/12
Filed: 1927-07-09
Abstract: 279,029. Debrie, A. L. V. C. Oct. 13, 1926, [Convention date]. Lens mounts. - A focusing lens mount for photographic or kinematographic camera comprises a holder 7, for the objective, which is adapted to slide without rotating in a sleeve 2 carried on the plate 1. Rotation of the holder 7 is prevented by a key 8 as shown and focusing is effected by means of a lever 12 moving a bar 11 carrying a pin which enters a circumferential slot 3 in the sleeve 8 and a cam-shaped slot 9 in the holder 7. The cam is made in accordance with the focal length of the objective used so that the end of the lever 12 may indicate on a scale 14 the distance of the object whatever the focal length of the objective in use. A number of objectives may be carried in a turret, Fig. 5, and be simultaneously focussed by movement of the ring 16, in a manner similar to that described above.
Patent GB-440415-A (GB)
Title: Improvements in the manufacture and production of azo dyestuffs containing metals
IPC: C09B45/01
Filed: 1934-06-21
Abstract: Complex metal compounds of o-hydroxyazo dyes are made by causing salts of halogen substituted fatty acids of low molecular weight with metals capable of forming complexes to act on o-alkoxyazo dyes under conditions under which the alkyl group thereof is split off.  In examples the following dyes are treated with chromium oxide and monochloracetic acid in aqueous medium: (1) 1-methoxy-2-amino-4-chloro-5-nitrobenzene --> 1-naphthol-4: 8-disulphonic acid; (2) and (3) 1-methoxy-4-chloro-2-aminobenzene or 1-methoxy-2-aminobenzene-4-sulphonic acid benzyl ester --> 2-naphthol-6 : 8-disulphonic acid.  The chromium and copper salts of mono- and dichloracetic acid, monobromacetic acid, b -chlorpropionic acid or of mixtures such as of mono- and dichloracetic acids or the acid mixture remaining in the preparation of chloracetic acid may be used as well as mixtures of such salts with other agents supplying metals.  The Provisional Specification refers to the treatment of any azo dyestuff capable of forming complex metal compounds.
Patent GB-1455982-A (GB)
Title: Shelving unit
IPC: A47B96/14
Filed: 1975-05-02
Abstract: 1455982 Shelving MULTIMUEBLE ESPANA SA 2 May 1975 [14 Jan 1975] 18397/75 Heading A4B In a shelving assembly of the type in which brackets 2 have hooks 4 selectively engaged in slots 3 formed in wall mounted channel-section uprights 1, the uprights 1 are provided at each end with holes 9 to receive fixing screws, one of the ends being constituted by a channel-section insert portion 10 which may be snugly received in an end of a further upright 1 so that the uprights are disposed in aligned end-to-end relationship and the holes 9 of the interengaged ends are aligned to receive a single fixing screw. The hooks 4 have an inclined inner face 5 and each bracket 2 has oppositely extending stabilizer tabs 6, 7 which in use bear on the front face of the upright. The shelf 14 is retained beneath a resilient protuberance 13 pressed out from the upright and behind an upstanding end 8 of the bracket. The limbs of the upright diverge from the web and are rebated along the edges intermediately of their ends.
Patent GB-252929-A (GB)
Title: An improved sock suspender
IPC: A41F11/16
Filed: 1925-07-20
Abstract: 252,929. Thomas, A. L. July 20, 1925. Sock-suspenders.- A sock - suspender consists of a length of elastic material adapted to encircle the leg in a single loop a', it being maintained in this shape by passing through slots in a piece of felt &c. b. To one end of the material is attached a triangular metal loop d by looping the material through a slotted plate e to which the loop d is pivoted. To the outer end is secured a stud g, a slide f being provided at each end to adjust the length of the suspender.
Patent GB-1114363-A (GB)
Title: Improvements in illuminated signs
Inventor: PLEASANCE JOHN ANTHONY
IPC: G09F13/04
Filed: 1966-04-27
Abstract: 1,114,363. Illuminated signs. WILLING LUMI-NEON Ltd. 27 April, 1967 [27 April, 1966], No. 18469/66. Heading G5C. A sign, illuminated from within by electric lamps, comprises at least two panels (one of which is shown at E) normally mounted in a common vertical plane side-by-side, and which are supported at the top edge (E<SP>1</SP>) of the panels, and means (D) for removing one or more panels for maintenance, which means is located above the panels and comprises bolts (C<SP>1</SP>) slidable from front to rear in slot (B<SP>1</SP>) and grooved channels (C) with supporting flanges which are brought into alignment with the plane of the panels by sliding (D) to front or rear, so that a panel may be slid sideways into channel (C) which will then support the panel from its top edge (E<SP>1</SP>).
Patent GB-1444680-A (GB)
Title: Preparation of block polymers
IPC: C08F236/10
Filed: 1974-04-29
Abstract: 1444680 Block copolymer preparation GOODYEAR TIRE & RUBBER CO 29 April 1974 [17 May 1973] 18567/74 Heading C3P A block copolymer of the formula ABA where each A is polyalphamethylstyrene and B is a polymer of a conjugated diene is obtained by contacting a mixture of the monomers with an organodilithium catalyst at 20‹ to 45‹ C., there being an excess of the alphamethylstyrene monomer in the polymerization mixture. A small amount of styrene is desirably present to promote linking of the blocks. Examples prepare alphamethylstyrene-butadiene block copolymers in alpha-methylstyrene alone as solvent or additionally with benzene using dilithioisoprene, di(alphalithio - 3 - methylpentyl)benzene, or alpha(dilithiodiisoprenyl)-3- methylpentyltoluene.
Patent GB-1261648-A (GB)
Title: PROCESS FOR MAKING CRYSTALLINE ALKALI METAL SALTS OF alpha-CARBOXYBENZYL-PENICILLIN
IPC: C07D499/16
Filed: 1969-04-10
Abstract: 1,261,648. Crystalline alkali metal salts of α- carboxybenzyl-penicillin; penicillins and phenyl malonic acid derivatives. PFIZER Inc. 10 April, 1969 [17 Oct., 1968; 4 March, 1969], No. 18574/69. Headings C2A and C2C. Crystalline alkali metal salts of α-carboxybenzyl-penicillin are prepared by admixing a solution of α-carboxybenzylpenicillin (in a solvent selected from ethyl acetate, n-butanol, methylethyl ketone or methyl isobutylketone; the solution containing from 3 to 20% by weight of water) with an alkali metal compound selected from (a) an alkali metal salt of an organic acid selected from 2-ethyl hexanoic, caproic, oleic, ascorbic, glycolic, propionic, acetic, succinic, cinnamic, caprylic and nitric acids; (b) an alkali metal hydroxide; and (c) an alkali metal methoxide, wherein the alkali metal is sodium or potassium, and the product is isolated. The mono- or di-alkali metal salt may be prepared by employing a molar ratio of about 1 : 1 or at least 2 : 1 respectively of an alkali metal salt of group (a) to α-carboxybenzylpenicillin. The alkali metal salt of 2-ethyl hexanoic acid may be used in a solvent selected from acetone, ethyl acetate, n-butanol and isopropanol. A crystalline alkali metal salt of α-carboxy-benzylpenicillin may be prepared by (a) adjusting the pH of an aqueous alkaline solution of α-carboxybenzylpenicillin to 2 to 3À5; (b) extracting the acid solution thus produced with a waterimmiscible organic solvent selected from ethylacetate, n-butanol, methylethyl ketone and methyl isobutyl ketone; (c) back-extracting the water-immiscible organic solvent extract with water at pH 6À5 to 8À0; (d) adjusting the pH of the aqueous extract thus produced to a value of from 2 to 3À5; (e) extracting the aqueous acid solution thus produced with a water-immiscible organic solvent selected from n-butanol and methyl isobutyl ketone; (f) drying the water-immiscible organic solvent extract to a water content of from 3 to 20% by weight; (g) admixing the dried extract with an alkali metal 2-ethyl hexanoate; and (h) separating the crystalline alkali metal salt.  α-Carboxybenzylpenicillin phenyl ester is prepared by reacting 6-aminopenicillanic acid with phenylmalonyl chloride monophenyl ester; and its N-ethyl piperidine salt is prepared by reaction with N-ethyl piperidine. Phenylmalonic acid monophenyl ester is prepared by reacting phenylmalonic acid with phosphorous oxychloride and phenol. Phenylmalonyl chloride monophenyl ester is prepared by reacting phenylmalonic acid monophenyl ester with thionyl chloride.
Patent GB-237296-A (GB)
Title: Improvements in or relating to shock-absorbing sockets or holders for thermionic valves or other electrical devices liable to be injured or affected by shocks or vibrations
IPC: H01R33/76
Filed: 1925-07-21
Abstract: 237,296. Benjamin Electric, Ltd., (Assignees of Pollard, W. L., and Hopkins. C. L.). July 21, 1924, [Convention date]. Spring mountings of articles; non-metallic springs. -A shock-absorbing holder for thermionic valves or other electrical apparatus comprises a wiring base 10 and a pair of leaf-springs 14 supporting the holder, shell, or socket 11, the leaf-springs being secured at their ends to the base and at intermediate points 16 to the holder. Leaf-spring contacts 13 are mounted on the base, and a projection 18 is provided for limiting the movement when inserting the valve &c. The members 14 may comprise strips of thin sheet fibre.
Patent GB-214889-A (GB)
Title: An improved bottle-filling machine
IPC: B67C3/24
Filed: 1923-07-20
Abstract: 214,889. Mollinga, H., Schokker, J., and Verburg, J. July 20, 1923. Bottling.-In bottle-filling apparatus of the type comprising a reservoir provided at the bottom with downwardly extending discharge pipes having a common closing valve and adapted to deliver liquid into a number of bottles simultaneously, the closing valve for all the inlet openings of the discharge pipes comprises a plate situated inside the reservoir and adapted to be raised and lowered. The valve consists of a flat plate 10, Fig. 5, of rubber &c. secured to a metal plate 11 having a central bolt 12 which passes through the cover 7 of the reservoir 6 to cross-pieces 14, the ends of which are secured to downwardly extending rods 15. The central part 3, Fig. 1, of the frame 4, the upper surface of which is formed by two interrupted rails 2, constitutes the bottle-lift and is guided by posts 5 which support the box-shaped reservoir 6. The lift is operated by means of coupled cross-rods 23 which are pivoted at 24, rollers 25 at the ends of the arms 23 bearing against guides 27, 28 of the stationary table and the lift-table respectively. The coupling-rods 22 of the crosses 23 are connected to steel cables 21 passing round two double pulleys 20 on an axle 18 mounted in bearings 19 and carrying a counterweighted lever 26 which may be locked in the sector 32 by means of a pin 33. In the lowest position of the lift-table, the side posts 29 rest upon rubber projections 30 on the posts 5. The empty bottles are placed in the compartments of a wheeled tank 35, Fig. 3, provided with projections 42 to abut against retractible pawls when the tank is in proper position on the lift-table. On releasing the lever 26, the lower ends of the rods 23 are moved towards each other by the cables 21 and the lift ascends until pins 31 on the posts 29 engage and raise the rods 15, thereby opening the valve 10 against the action of the springs 16, 17 and allowing liquid to flow through the pipes 9 into the bottles. The lift descends under the weight of the filled bottles and the valve 10 is closed by the springs 16, 17. When the lift is in its lowest position, the pawls are withdrawn from the projections 42 by depressing a foot-board, and the tank 35 with the filled bottles can then be removed. A lever carrying an adjustable casing containing a loose ball may be used instead of the counterweighted lever 26. The discharge pipes 9 are secured by lock-nuts 52, Fig. 7, to small tubes 50 attached to the bottom of the reservoir 6, and are provided at their lower ends with outlet pipes 51 having side outlets 54.
Patent GB-1079876-A (GB)
Title: Photographic processing tank
IPC: G03D13/06
Filed: 1965-05-04
Abstract: 1,079,876. Photographic processing tanks. EASTMAN KODAK CO. May 4, 1965 [May 4, 1964], No. 18769/65. Heading G2A. A photographic processing tank has a detachable cover 2 having an inlet port 8 through which liquid can enter into a trough 18 provided with holes 19. The bottom 3 of the tank has a discharge port 9. In use, after the trough 18 has received a predetermined quantity of processing liquid, the tank is turned on its side and rotated whereby the print to be processed is immersed in the liquid. The tank is then turned upright so that the liquid flows out of the discharge port and a further charge is poured into the trough. The ports 8, 9 have baffles to prevent ingress of light.