baber/WOPTO huggingface dataset:
Patent GB-1385675-A (GB)
Title: Apparatus for presenting a moving pattern
IPC: A61B5/00
Filed: 1971-01-15
Abstract: 1385675 Sight testing P M GARTON 11  April 1972 [15 Jan 1971] 2022/71 Heading G2J Visual acuity is tested using an apparatus for presenting a moving pattern comprising means for presenting towards a viewing station a display surface bearing a pattern which consists of pattern elements e.g. stripes 20, repeated along one dimension of the display surface, the display surface being presented, in use, over a field of view of sufficient width to include a plurality of pattern elements, means for moving the display surface across the field of view, and means for varying either or both of the line interval required for passage of the leading and trailing boundaries past a reference point, or the angular width subtended at the viewing station by pattern elements presented at any given instant by the display surface, these last means permitting of determination of the value of the parameter involved. By direct observation of the subject's eyes, or using an EEG, the tester can determine the value of the parameters when opto-kinetic nystagmus occurs, and this gives a measure of visual acuity. The display surface may be a web fed from one roll to another, or be an endless band, as shown, arranged around reels 12, 13. The time variation may be achieved by altering the speed of a motor driving the band. The pattern elements may be of different widths in different transverse parts of the band, when by using a mask to define the field of view, the angular width may be varied.
Patent GB-684210-A (GB)
Title: Photographic objective lenses
IPC: G02B13/00
Filed: 1951-01-26
Abstract: 684,210. Optical objectives. MEOPTA, NARODNI PODNIK. Jan. 26, 1951 [Feb. 1, 1950], No. 2031/51. Class 97 (i). In a corrected photographic objective consisting of two simple convergent lenses enclosing two divergent meniscus doublets concave to a central diaphragm and with the negative element of each doublet nearer the diaphragm, the radius of the cemented surface of the front divergent meniscus is greater than five times the eqilivalent focal length of the objective, the cemented surface of the rear divergent meniscus is concave to the front and has a radius greater than the said focal length and the radius of the front surface of the rear positive member is at least ten times larger than that of the rear surface of that member. Data are given for one example of the lens shown in which the cemented surface r 4  of the front meniscus is plane and for one example in which the said surface is concave to the front.
Patent GB-711478-A (GB)
Title: Improvements relating to the projection of cinematograph films
Inventor: FOY WILLIAM JAMES
Filed: 1951-01-26
Abstract: 711,478. Kinematograph films and projectors. ESSOLDO CIRCUIT (CONTROL), Ltd. Dec. 14, 1951 [Jan. 26, 1951], No. 2104/51. Drawings to Specification. Classes.97(1) and 98(2) A film carries a conductive trace arranged to run past and bridge two contacts disposed in the grid circuit of a thermionic device so as to pass only grid current. The trace may be disposed in one film margin and may be of a length depending on the length of contact required, or may have parts in both margins connected by one or more parts in spaces between frames. The trace may be of metallic paint or, to avoid interference with a sound track, of a colourless conductive lacquer. The conductive trace may be carried on an auxiliary film fed concurrently with main film. Specification 711,479 is referred to.
Patent GB-561695-A (GB)
Title: Improvements in or relating to spindle pumps and the like
IPC: F04D3/02
Filed: 1943-02-09
Abstract: 561,695. Bearings. WILDMAN, H. S., and PLESSEY CO., Ltd. Feb. 9, 1943, No. 2163. [Classes 12 (i) and 12 (iii)] [Also in Group XXVI] The end thrust spindle 5 of a grinding machine &c. is provided at the end with a helical groove or grooves 4 rotating in a housing 7 and forming a pump, the delivery end of the groove opening into a pressure chamber 6 opening through a relief valve 9 into a reservoir 1 which feeds the inlet end of the groove through a duct 3. This arrangement balances end thrust on the spindle and holds it up against a limiting collar 18. The inlet end of the groove 4 opens into an annulus provided with a packing ring 13 to prevent leakage. If the liquid is lubricant, the bearing 7 is lubricated and the chamber 6 may be connected to other points to be lubricated. In another form, the chambers 1 and 6 are in one, and pressure is supplied by compressed air admitted above the liquid.
Patent GB-727800-A (GB)
Title: Improvements in apparatus for conditioning wheat or the like grain
IPC: B02B1/08
Filed: 1952-01-28
Abstract: 727,800. Treating grain. MIAG MUEHLENBAU UND INDUSTRIE GES. Jan. 28. 1952 [Jan. 26, 1951], No. 2212/52. Addition to 713,035. Class 58. In an apparatus for carrying out the process of the parent Specification a stirring and conveying mechanism provided in a steam chamber opening directly into a separate heating chamber extends into the heating chamber as far as a device which is sensitive to the pressure of material being conveyed forwardly by the mechanism, the device being connected to regulate an outlet control member of the heating chamber in dependence on the pressure in such a manner that the cross-sectional area of the outlet increases as the pressure increases. As shown, a horizontally disposed steam chamber 7 is connected directly to a heating chamber 10 and receives grain which is admitted to the steam chamber 7 through a pipe 4 and conveyed therethrough by a screw conveyer 6 whilst being contacted by steam from nozzles 8 fed from a steam conduit 9. A pressure sensitive device consisting of a flap 15 rotatably mounted about an axis 14 in the heating chamber and subject to the action of a tension spring 12 controls the outlet 16 through a lever 13 and rods 11 to ensure that the same amount of grain flows out of the apparatus as is drawn in by the conveyer 6. Specification 569,370, [Group XIII], is referred to.
Patent GB-265003-A (GB)
Title: A new or improved valve lifter
IPC: B25B27/26
Filed: 1926-01-26
Abstract: 265,003. Tarling, J. H. Jan. 26, 1926. Cramps.-A valve lifter comprising a brace-like member with forked lower end to take under the valve spring washer has the upper arm b formed in one with the brace member a and provided with a threaded hole to receive the screw d fitted with a circular dished plate e to engage the head of the valve f. The arm c is forked at g to straddle the valve stem h and engage the washer i of the spring j.
Patent GB-1144994-A (GB)
Title: A process of manufacturing pipe bends of cast metallic material
IPC: B22C9/24
Filed: 1968-01-16
Abstract: 1,144,994. Pipe bends. SULZER BROS. Ltd. 16 Jan., 1968 [23 Jan., 1967], No. 2292/68. Heading F2G. [Also in Division B3] Pipe bends are formed by casting approximately semi-toroidal dishes which are machined and non-destructively tested to reveal blowholes, cracks, &c., after which sectors 3, 4 having the desired bend angle and being unflawed are cut out of the dishes and pairs of sectors longitudinally welded together to form the pipe bends. The sectors 3, 4 of chrome nickel stainless steel and having a bend angle of 45 degrees or 90 degrees, have a non-uniform wall thickness. The welds 7, 9 and 8, 10 may be replaced by single V-welds.
Patent GB-1377934-A (GB)
Title: Self-bailer for sailing boats
IPC: B63B13/00
Filed: 1973-01-16
Abstract: 1377934 Bailing devices for boats K BIER 16 Jan 1973 [9 May 1972] 2306/73 Heading B7M A self-bailing device comprises a frame 1 which is intended for mounting horizontally in the bottom of a boat and which carries a flap 8 for closing openings in the plate when the exterior suction falls below a given level. The flap is biased towards its closed position by its own resilience and by a layer 9 of buoyant foam material secured to its underside. The flap is located between the plate 1 and a shoot 6 which is pivotable about its mounting 7 between its illustrated rearwardly open position and a position in which it closes the plate apertures by acting on the flap. When the shoot is closed, its wings 6a are accommodated in hollow upwardly projecting parts of the plate.
Patent GB-993216-A (GB)
Title: Improvements in or relating to flushing devices for flushing cisterns
IPC: E03D1/34
Filed: 1963-01-18
Abstract: 993,216. Valve-discharge; water-wastepreventers. C. BEGARD, and R. FERNANDEZ. Jan. 18, 1963 [Jan. 25, 1962; Dec. 6, 1962], No. 2316/63. Heading E1C. A flat valve 3 of a flushing device normally closing a discharged duct 1 and raised by means of a control rod 10 comprises an internal guide device consisting of a duct 11, closed at the top (Fig. 3a) and slidable on a guide rod 12, fixed along the axis of the duct 1 to the latter. The rod 12 carries a cap 13 forming a stop against a ring 14 in the lower part of the float 3 to prevent separation of the duct 11 and the rod 12. The rod 10 is connected to the float 3 by an articulation formed of an auxiliary rod 15 engaging a ring 17 and having an adjustable cap 18 below which the hooked end 19 of a rod 10 engages around the rod 15, as shown. Projecting outside the duct 1 and connecting it to the cistern are detachable lugs 26 (Fig. 4) which can be fitted on the duct 1 to clamp it against the bottom around an orifice. The lugs 26 engage on internal peripheral internally-screwthreaded supports 25 in the duct 1, on each of which a sleeve 29 integral with the lug 26 engages to be traversed by a screw 27 engaging in the support 25. The supports 25 may be circular or hexagonal in section and may be fixed to the ends of a bar 24 or on shoulders on the internal periphery of the duct 1. The end of the duct 1 has projecting parts 28 to form centring stops in the orifice, which may be opposite the supports 25 and/or between them. In a modification the duct 1 is screwed into the orifice and held there by a washer and flanged ring.
Patent GB-488725-A (GB)
Title: Improvements in and relating to horticultural glass frames and plant and seed protectors to be assembled in a continuous row
IPC: A01G13/04
Filed: 1937-01-27
Abstract: 488,725. Horticultural frames. PHILLIPS, E. Jan. 27, 1937, No. 2345. [Class 20 (i)] Horticultural frames of the type having a flat roof and relativelv inclined sides. and which are adapted to be placed to form a continuous row, have the glass sheets supported in holders, each of which is bent from strip metal to comprise a handle 4, double side bends 3 for supporting the edges of the roof sheets and the upper edges of the side sheets, and further lower bends 2 to support the lower edges of the side sheets. Ventilation occurs between the edges of the roof and side sheets.
Patent GB-974962-A (GB)
Title: Improvements in or relating to electron discharge tubes having electron guns
IPC: H01J23/05
Filed: 1963-01-18
Abstract: 974,962. Velocity-modulated tubes. C.S.F.- COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Jan. 18, 1963 [Jan. 19, 1962], No. 2349/63. Heading H1D. A rotationally-symmetric electron gun includes a thermionic cathode, comprising a number of emissive surfaces separated from each other by non-emissive intervals, and an anode, one of the two electrodes surrounding the other. Electrons emitted by the cathode are concentrated into a tubular beam rotating about itself by an axial magnetic field produced by coil 6, and by radial and axial electric fields. As shown, the electric fields are produced between cathode 1, Fig. 1, and anode 2, and between electrodes 3 and 4. The positions of the cathode and anode may be reversed, the anode being conical and the cathode internally emissive. The cylindrical cathode may comprise annular, or axially-extending, emissive bands separated by annular grooves or axiallyextending baffles. Alternatively, rectangular emissive surfaces 13, Fig. 5, may be provided between mutually-perpendicular grooves 14 or within the meshes of a non-emissive grid 14. The electron gun may be used in M-type travelling-wave tubes having symmetry of revolution or in O-type tubes or klystrons, Figs. 7-9 (not shown).
Patent GB-1174284-A (GB)
Title: Improvements in or relating to Gramophone Record Containers
Inventor: SIMMON GERHARD
IPC: A47B81/06
Filed: 1967-01-18
Abstract: 1,174,284. Cabinets. G. SIMMON. 18 Jan., 1967 [4 Feb., 1966], No. 2587/67. Heading A4B. A stackable, gramophone record container comprises a rectangular base 8 with an upstanding rim on three sides and a removable cover plate 18, a removal and entry slit 14 for a record defined between the cover 18 and the fourth side of the base 8, and a drawer 13 accommodated within and guided by the rim, the drawer 13 being made of stiff foil with an upstanding rim 17 on its rear edge. The rear edge of the drawer 13 is rounded in conformity with a fillet 15 on the base 8. Projections 16, 19 on the rim and the drawer 13 limit withdrawal of the drawer. The rim is formed with holes 6 which receive locating pins 5 for stacked containers. The forward edge of the drawer carries a projecting grip strip 12 serving also as a contents label. The base 8 has a central trough 9. A retractable carrying handle 21 is provided. Recesses 4 in the base sides serve to receive and located straps passed around a bundle of containers for transport.
Patent GB-631604-A (GB)
Title: A method of electrically driving band rolling mill winches
IPC: H02P5/685
Filed: 1947-01-28
Abstract: 631,604. Automatic control systems for rolling mills. SOC. ANON. DES ACIERIES ET FORGES DE FIRMINY. Jan. 28, 1947, No. 2609. Convention date, Jan. 29, 1946. [Class 38 (iv)] [Also in Group XXXVII] In a reversing rolling mill, Fig. 1, the winding of the roll by motor 1 serves to drive the dynamo-electric machine 2 as a generator. The armatures of 1 and 2 are supplied from a second generator 3, while their shunt fields are supplied, respectively, through the potentiometers R1, R2. The latter are varied automatically to maintain the E.M.F's of both machines equal as the winding process progressively alters the diameters of the wind and un-wind drums. The tension of the strip and the current through machines 1, 2 are stated to remain constant. In a further embodiment, Fig. 5 (not shown), the system is applied to anon-reversing mill.
Patent GB-310451-A (GB)
Title: Improvements in or relating to wireless telegraphy and telephony, and aerial systemstherefor
IPC: H01Q11/04
Filed: 1928-01-26
Abstract: 310,451. Franklin, C. S. Jan. 26, 1928. Aerials; directive signalling.-Aerials of the type described in Specification 242,342, wherein the radiation from alternate half wavelengths is suppressed, are designed to have a directional characteristic which is inclined to the horizontal. If, as shown in the Figure, the sections, a, b, c of each aerial are made slightly longer than half a wavelength the predominant directional characteristic is along the upward path r1, with a secondary downward loop r2. If the sections a, b, c are shorter than half a wavelength, the predominant directional effect is inclined downwards. A number of such aerials may be arranged in line and spaced apart by a fraction of a wavelength. The array may be backed by any suitable reflecting system.
Patent GB-1041433-A (GB)
Title: Method for removing sulfurous acid from hydrochloric acid
IPC: C07D201/10
Filed: 1964-01-21
Abstract: Sulphur dioxide is removed from hydrogen chloride and sulphurous acid from hydrochloric acid by contacting the impure material with nitrosyl chloride in the presence of water or dilute HCl.  Thus cycloalkane is photo-reacted with a gas mixture of NOCl and HCl to give cycloalkyloxime hydrochloride which is subjected to Beckmann's re-arrangement in the presence of H2SO4 catalyst to give the lactam, the by-product HCl containing SO2 is contacted with NOCl in the presence of water or dilute HCl.  The NOCl source may be the effluent gases from the cycloalkyloxime hydrochloride reaction or is part of the NOCl/HCl mixture used in the manufacture of the lactam.ALSO:In a process for the preparation of lactams, a cycloalkane is photo-reacted with a gas mixture of nitrosyl chloride and HCl to give a cycloalkyloxime hydrochloride which is subjected to Beckmann's rearrangement in the presence of H2SO4 to give the lactam, the by-product HCl containing SO2 being contacted with NOCl in the presence of water or dilute HCl to remove the SO2 content.  The NOCl source may be effluent gases from the cycloalkyloxime hydrochloride reaction or is part of the NOCl/HCl mixture used in the manufacture of the lactam.
Patent GB-1507813-A (GB)
Title: Production of citric acid in slack wax media
IPC: C12P7/48
Filed: 1977-01-24
Abstract: 1507813 Citric acid PFIZER Inc 24 Jan 1977 [3 March 1976] 02800/77 Heading C2C Citric acid is prepared by a fermentation process using slack-wax as the principal source of assimilable carbon, with a yeast of genus Candida. The yeast is aerobically propagated using an aqueous nutrient containing an assimilable source of carbon to promote growth but insufficient to permit the accumulation of citric, e.g. glucose, a vegetable oil, a fatty acid ester or mixtures thereof, or a normal paraffin (9-19C), and conventional additives. The slack wax is added together with a solubilizing agent, e.g. alkanols (4-10C) alkyl esters of alkanoic acids (2-6C), alkenes, alkanes (8- 19C), turpentine, mineral oil and mixtures thereof and kerosene. Examples describe the use of n-octane, n-nonane, n-decane and ndodecane and turpentine, kerosene, mineral oil, butanol, amyl alcohol, octanol, decanol, ethyl acetate and butyl hexanoate as solubilizing agents.
Patent GB-1017449-A (GB)
Title: Substituted silanes and the preparation thereof
IPC: C07F7/14
Filed: 1963-07-22
Abstract: Novel silanes of general formula <FORM:1017449/C3/1> in which R is alkyl or aryl, R1 is halogen, R11 is an alkyl radical or hydrogen, X is <FORM:1017449/C3/2> where R111 is an alkyl radical, and a is 0, 1 or 2, are prepared by reacting a halosilane of general formula <FORM:1017449/C3/3> with an allylidene compound of general formula <FORM:1017449/C3/4> at an elevated temperature in the presence of a platinum catalyst and a tertiary amine or amide.  Examples of allylidene reactants are allylidene diacetate, allylidene dipropionate, and 1,1-diacetoxy 2-methyl-2-propene. Suitable halosilanes are methyl dichlorosilane and trichlorosilane.  The preferred platinum catalyst is hexachloroplatinic acid or activated platinum on a support.  Examples of tertiary amines are tri-n-butylamine, triethylene diamine, triethylamine, N,N-dimethyl aniline, pyridine and trimethyl-diethyl-amino-silane. The specified amide is dimethylformamide. The examples describe the preparation of (1) and (5) g ,g  - diacetoxypropylmethyldichlorosilane, (2) g ,g  - dipropionoxypropylmethyldichlorosilane, and (3) g ,g -diacetoxy-b -methylpropyl-methyl-dichlorosilane. In Example (4) the dichloro product of (1) is converted to the diethoxy derivative.  Uses.-To impregnate glass fibres.ALSO:Glass fibres which will subsequently be coated with polyester, epoxy or phenol-formaldehyde resins are coated with haloaryloxysilanes of the general formula <FORM:1017449/D1-D2/1> alkyl or aryl group, R1 is a halogen atom, R11 is an alkyl or hydrogen radical, X is an <FORM:1017449/D1-D2/2> a is 0, 1 or 2 and R111 is an alkyl radical.
Patent GB-606317-A (GB)
Title: The manufacture of substituted benzhydryl ethers
IPC: C07D295/088
Filed: 1946-01-29
Abstract: Compounds of the general formula <FORM:0606317/IV(b)/1> in which R1 and R2 are the same or different substituents and represent hydrogen, an alkyl or an alkoxy radical containing 1 or 2 carbon atoms, R3 and R4 are the same or different alkyl radicals containing 1 to 3 carbon atoms or may form part of a saturated ring such as piperidine, morpholine, a methyl substituted morpholine or thiomorpholine are obtained by reacting a haloether with an amine of the formula <FORM:0606317/IV(b)/2> An acid-binding agent such as an alkali metal hydroxide, oxide, alcoholate, carbonate, bicarbonate or acetate or an alkaline earth metal hydroxide, oxide or carbonate may be employed. Detailed examples are given of the preparation of b -dimethylaminoethyl, b -N-piperidinoethyl, b -N-(morpholinoethyl), b -diethylaminoethyl, b -di-n-propylaminoethyl-p.p1-dimethyl, b -methylethylaminoethyl o-methoxy, b -methylaminoethyl and b -isopropylaminoethyl benzhydryl ether.
Patent GB-980275-A (GB)
Title: Process for the production of acylamino-1,4-benzoquinones
IPC: C07D239/30
Filed: 1963-01-24
Abstract: 2,5-Diacylamino or 2-acylamino-5-halogeno-1,4-benzoquinones are prepared by treating with an oxidizing agent the appropriate 1,4-dialkoxy, -diaralkoxy or -diphenoxyacylaminobenzene. In Example 1, the corresponding 2,5-diacylamino-1,4-benzoquinones are obtained by nitric acid oxidation of the compounds of Formula (I), wherein X is one of the following:-acetyl*, hexoyl*; methoxy-*, ethoxy-* or 2-methoxyethoxy*-carbonyl; 2- or 4*-methyl-, 2- or 4*-methoxy-, 2- or 4-chloro-, 2,4-dichloro-, 2,4-dimethyl- or unsubstituted-benzoyl*; 4-methylsulphonylbenzoyl, methylsulphonyl*, benzenesulphonyl*, 3-nitrobenzenesulphonyl ; chloroacetyl*, phenylacetyl*, cinnamyl*, 1-naphthoyl, isonicotinyl.  In Example 2, a similar method is used to obtain diacylaminobenzoquinones from compounds of Formula (I) wherein the X's are different; in specific compounds, (a) one X is acetyl and the other is benzoyl, ethylamino-carbonyl, methylsulphonyl or ethoxycarbonyl, (b) one X is benzoyl and the other is methoxycarbonyl, 2-chlorobenzoyl or 2,4-dichlorobenzoyl, (c) one X is hexoyl and the other is methylsulphonyl or nonoyl, (d) one X is 2-toloyl, the other is 2-chlorobenzoyl.  In Example 3, a similar method gives <FORM:0980275/C2/1> <FORM:0980275/C2/2> 2 - chloro - 5 - acylamino - 1,4 - benzoquinones from compounds of Formula (II), wherein X is a radical indicated by * above, or 4-nitrobenzoyl, phenylaminocarbonyl, hexahydrobenzoyl, stearyl, trichloroacetyl, phenoxycarbonyl, 3-chloropropionyl or 2 - chloroethoxycarbonyl. Other examples describe the use of different oxidizing agents, some of which act simultaneously as halogenating agents; thus, 2,5-diacetylamino - 3,6 - dichloro - 1,4 - benzoquinone is prepared from 2,5 - diacetylamino - 1,4 - diethoxybenzene using in presence of HCl and acetic acid H2O2, Cl2 or KClO3. Alternatively, halogenated acylaminobenzoquinones may be obtained directly from the products of the process of the invention; the following, in some cases accompanied by the corresponding hydroquinones, are obtained by direct bromination of acylaminoquinones:-2-chloro-5-(41-chlorobenzoylamino) - 3,6 - dibromo - 1,4 - benzoquinone, 2,5 - dibenzoylamino - 3,6 - dibromo - 1,4 - benzoquinone, 2,5 - di - (21 - chlorobenzoylamino) - 3,6 - dibromo - 1,4 - benzoquinone and 2 - chloro - 5 - carbomethoxyamino - 3,6 - dibromo - 1,4-benzoquinone. Also exemplified are the preparation of 2-bromo-5-acetylamino-1,4-benzoquinone, 2 - chloro - 5 - (31 - diethylamino - 51 - chloro - triazinylamino - 11) - 1,4 - benzoquinone and a dichloropyrimidine analogue of the latter.
Patent GB-1160941-A (GB)
Title: Glass and Glass Crystalline Material
Inventor: BONDAREV KONSTANTIN TIMOFEEVIC
IPC: C03C1/00
Filed: 1968-01-19
Abstract: 1,160,941. Glass composition. ORDENA TRUDOVOGO KRASNOGO ZNAMENI ZAVOD " AVTOSTEKLO". 19 Jan., 1968, No. 3000/68. Heading C1M. A glass contains in weight per cent: SiO 2 : 60À3-63À5; CaO : 22À0-25À0; MgO: 0À1- 3.5; MnO : 0À1-2À0; Al 2 O 3  : 6À0-8À5; Na 2 O : 4À5-5À5; TiO 2  : 0À1-1À0; Fe 2 O 3 : 0À1-1À0; and 0À3 to 0.46 parts by weight of sulphide sulphur and 1.0 to 2.0 parts by weight of fluorine per 100 parts of the above composition. Glass crystalline material having this composition may be obtained by the heterogeneous crystallization of the glass. In an example for 100 kg. of glass mass a stock mixture of the following composition: metallurgical slag 54À3 kg; quartz sand 39.6 kg; sodium sulphate 8.2 kg; sodium fluosilicate 4.7 kg; anthracite 0.5 kg is melted in a reducing medium at a maximum temperature of 1500 Œ 20‹ C., clarified and cooled. The glass mass obtained is moulded by continuous rolling into a glass strip which is transferred by rollers to a crystallizer where the glass is converted by heat at a maximum temperature of 950‹ C. into glass crystalline material.