baber/WOPTO huggingface dataset:
Patent GB-1244739-A (GB)
Title: Remote control apparatus, and slide projector controlled thereby
Inventor: HARVEY DONALD MALCOLM
IPC: G03B23/00
Filed: 1968-10-18
Abstract: 1,244,739. Light waveform generator. EASTMAN KODAK CO. Oct. 18, 1968 [Oct. 23, 1967], No.49514/68. Heading G1A. A remote control unit for operating a device having two operation modes comprises a source of light which may include ultraviolet and/or infrared wavelengths, means to repetitively modulate the energy from the source and a timer to produce modulated beams of selectable duration for effecting the initiation of the respective operation modes. The unit may be used to initiate forward or reverse actuation of transparency changing means of a magazine type projector. The repetitive modulation which renders the arrangement immune to ambient light may be obtained by rotating an annular grating or by vibrating in its plane a planar grating. The former may be driven by a helical spring attached to a gear-wheel and a throwable lever, and the latter by a vibrating blade. The light source may be switched by cam actuated contacts to produce the desired durations, or a shutter may be used to cut off the beam. Visible light may be removed from the beam by a filter in order not to disturb viewers.
Patent GB-1299420-A (GB)
Title: Impulse width discriminator
Inventor: KASTNER GERHARD
IPC: H03K5/1252
Filed: 1971-10-26
Abstract: 1299420 Pulse discriminating and delaying circuits FERNSEH GmbH. 26 Oct 1971 [27 Oct 1970] 49774/71 Heading H3P A pulse duration discriminator, which, in response to pulses exceeding a given duration, produces an output pulse of equal duration delayed by the given duration comprises a counter which starts counting clock pulses at the commencement of the pulse and, if the count reaches a predetermined value, initiates an output pulse, a second counter being started at the end of the input pulse and terminating the output pulse when the predetermined count is reached. As shown, an input pulse at 1 allows clock pulses from 3 to pass through gate 2 to a counter 4. If a preset count, representing the minimum pulse duration, is reached the counter sets a bi-stable circuit 5 and, via an OR gate 10, initiates an output pulse at 6. The end of the input pulse zeros the counter via an inverter 2a and resets the bi-stable circuit 5 thus causing a further bi-stable circuit 7 to be set. This maintains the output pulse at 6 via OR gate 10 and opens a gate 8 to pass the clock pulses to a counter 9. When this reaches a count equal to the preset count in the first counter it resets the bi-stable circuit 7 to close gate 10 and terminate the output pulse at 6. A monostable circuit 9a resets counter 9. The preset count may be adjusted coarsely by switches associated with the counter and finely by adjusting the clock frequency. Errors due to lack of synchronism may be reduced (Fig. 2, not shown) by starting the clock generator (11) at the onset of the input pulse and by feeding the second counter (20) with pulses from a second oscillator (12) started by the onset of the first bi-stable circuit (16) when the first counter (14) reaches the predetermined count.
Patent GB-1235136-A (GB)
Title: Dual carriage optical scanning system
IPC: G03B27/52
Filed: 1968-10-22
Abstract: 1,235,136. Dual carriage scanning. RANK XEROX Ltd. Oct. 22, 1968 [Oct.23, 1967], No.49995/68. Heading G2H. In a scanning apparatus for projecting an image of a stationary document on to a rotating drum having a photo-sensitive layer, two lamps and a lens are moved in timed relationship with the  drum so as to produce a constant level of illumination of successive elemental areas of the document throughout the scanning cycle. The two lamps are arranged to illuminate elemental regions at right angles to the direction of scan and to scan cyclically so that rapid movement of a lamp carriage is avoided. The illumination produced by the added contributions of the lamps is maintained constant during the scanning cycle by variations in the relative scanning speeds of the lamps and the lens. Lamp carriages 30 are moved along a horizontal rail by chains 43 driven by sprockets 47. The carriages contain two elongate lamps (39) Fig. 4 (not shown) with slit apertures arranged to illuminate a document supported above on a platen 16. The chain 43 has a projection (41) Fig. 4 (not shown) which engages a slot 42 in the carriage housing 36 so that it is free to move up and down therein. The speed of the lamp thus depends on the gradient of the chain 43. A lens carriage 15 is moved along a horizontal rail (75) Fig. 3 (not shown) by means of a belt (76) which is driven through timing belts by motor 52. A driving lug (79) on the belt (76) engages a contact pad (80) on the lens carriage so that the carriage is moved from right to left to scan the original. A spring 92 attached to the carriage returns it to its starting position at the end of scan, a damping mechanism comprising cam 96 being provided. The lens is midway between the original and the drum 10 so the lamp driving chains are arranged to move at the same speed as the periphery of the drum and at twice the speed of the lens carriage. A region 'R' of the illumination profile produced by a lamp Fig. 5 (not shown) is isolated by a slit 25 close to the drum. At the start of a cycle the lamps are at the extreme ends of the document to be scanned but are arranged to the 180 degrees out of phase so that when one is being driven towards the centre by the top side of the chain 43, the other is being driven towards the centre by the bottom side of the chain 43. The lens scans from the right and as the lamps approach the centre the illumination patterns produced by each of them begin to overlap Figs. 7 and 8 (not shown). The speed of one of the lamps decreases as it is driven by the sloping part of the chain 43, the effect of which is to move region 'R' seen by the drum to the right on the curve shown in(Fig.7) to maintain a constant level of effective illumination. In the second half of the cycle the "slippage" between the lamps and the lens is regained as the lamps return to their original positions. A conventional xerographic process is described.
Patent GB-1522236-A (GB)
Title: Tubular structure for conveying fluids
IPC: B32B1/08
Filed: 1976-12-01
Abstract: The wall of the pipeline is constructed from a plurality of heat-insulating layers. It is intended to ensure that at least that part of the pipeline which is in contact with the medium is largely chemically resistant. For this reason, at least one layer of the pipe wall, preferably the layer which comes into contact with the medium, that is to say the inner pipe (1), consists of a material which is wetted by moisture and is based on thermoplastics, elastomers or thermoplastic rubbers. A pipe consisting of polypropylene is used, for example, as the outer pipe (2). <IMAGE>
Patent GB-1222819-A (GB)
Title: Improvements in or relating to rackets
Inventor: CARLTON WILLIAM CHARLES
IPC: A63B49/12
Filed: 1967-11-07
Abstract: 1,222,819. Rackets. CARLTON SPORTS CO. Ltd. 17 May, 1968 [7 Nov., 1967], No. 50461/67. Heading A6D. A method of manufacturing a metal racket frame for stringing is characterised in forming a plurality of holes in a metal member in positions corresponding to the desired positions of stringing apertures by spark erosion obtained by the simultaneous employment of spaced electrodes carried on a spark erosion head.
Patent GB-1536130-A (GB)
Title: Device for determining the direction of propagation of a plane wave
IPC: G10K11/34
Filed: 1975-12-10
Abstract: 1536130 Direction finding COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL 10 Dec 1975 [10 Dec 1974] 50677/75 Heading GIG [Also in Division H4] In a modification of the sonar direction finder described in Specification 1534131, the input to the delay-device/adder chain 40 and/or to the lateral input of each adder 41, 42 of the chain are fed with the averages of the outputs of adjacent pairs of the buffer memories 401-405, Fig. 3, or of adjacent pairs of the sampling shift registers 420, Fig. 4, by means of secondary adders 51, 52.
Patent GB-1403764-A (GB)
Title: Collapsible shutter gate
IPC: E05D15/26
Filed: 1972-11-03
Abstract: 1403764 Folding doors BOLTON GATE CO Ltd 29 Oct 1973 [3 Nov 1972] 50747/72 Heading E1J A collapsible shutter gate comprises uprights 10 connected by lattice members and with hinged shutters 12 on one side, suspending rollers 14 at the upper ends of the uprights and stabilizing rollers 20 located on the side remote from the shutters and running on a flat surface. Roller 20 is mounted on a bracket 22 which is adjustable by screw 36. Roller 20 may have a vertical axis and run on a vertical surface.
Patent GB-1219162-A (GB)
Title: Production of neopentyl glycol
IPC: C07C29/141
Filed: 1968-10-25
Abstract: 1,219,162. Neopentyl glycol. EASTMAN KODAK CO. 25 Oct., 1968 [27 Oct., 1967], No. 50822/68. Addition to 1,048,530. Heading C2C. Neopentyl glycol is prepared by reacting hydroxypivaldehyde with hydrogen in the presence of a supported barium-promoted copper chromite catalyst at 175-220‹ C. and 900-10,000 p.s.i.g., said hydroxypivaldehyde being produced by reacting formaldehyde with excess isobutyraldehyde and an alkali metal hydroxide or cyanide as catalyst in a homogeneous reaction medium comprising a C 1-3  watersoluble alcohol at a temperature not higher than 25‹C. and separating the hydroxypivaldehyde from the other constituents of the reaction mixture, e.g. by first stripping off the alcohol and excess isobutyraldehyde and then extracting the hydroxypivaldehyde, e.g. with di-n-butyl ether. The resulting solution may be used directly for the hydrogenation step. A continuous process is described.
Patent GB-510492-A (GB)
Abstract: 510,492. Projecting machines for plaster &c. DAIGNAS, M. Sept. 29, 1938, No. 28377. Convention date, Sept. 26. [Class 20 (ii)] A mechanical pargeting machine comprises a casing, a rotor mounted in the casing and non- resilient blades mounted by resilient means on the rotor so that the projection of the material by the blades is caused by the distortion of the resilient mounting. The casing 1 is provided with a handle and with a rotatable metal shaft 2 on which is mounted a resilient cover 3 which may. comprise one or two layers. The projection members 4 are rigid, and are mounted in grooves in the resilient cover of the shaft, and are adapted to contact their outer edges with an abutment 5 which may be adjustably mounted in the casing, whereby the flexible shaft cover is distorted, so that on its release the blades in succession flick material through the opening of the casing. Various sections for the projecting members as well as shapes of ends and methods of mounting in the flexible shaft cover are shown and described and the flexible cover may be provided with radial projections 23, Fig. 15, to receive the feet of the projection members.
Patent GB-1025813-A (GB)
Title: Production of mannitol/sorbitol
IPC: C07C31/26
Filed: 1963-12-30
Abstract: A mixture containing mannitol (with some sorbitol) is obtained by catalytically hydrogenating an aqueous solution of glucose and/or invert sugar in the presence of lime and a supported nickel catalyst under the following conditions:  (a) a lime concentration of 0.25-1.5% based on the weight of glucose and/or invert sugar;  (b) a nickel concentration of 0.2-2.0% based on the weight of sugar;  (c) a ratio of the weight of nickel x catalyst activity to the weight of lime between 1.0 and 9.0;  (d) a hydrogen pressure of 500-3000 p.s.i.; and  (e) a temperature in the range 60-100 DEG  C.  The "catalyst activity" is defined and a method of calculating it is given.  If desired, between 0.02 and 0.08% of calcium carbonate based on the weight of sugar may be added as buffering agent.  Preferably, the ratio of the weight of nickel to that of lime is in the range 0.5: 1 to 3.0: 1.  The catalyst may be filtered from the reduced solution and, if desired, mannitol and/or sorbitol recovered.
Patent GB-512818-A (GB)
Abstract: 512,818. Pressure-reducing valves. AULD & SONS, Ltd., D., GRAHAM, J., and GRAHAM, D. A. March 24, 1938, No. 9020. [Class 135] In pressure-reducing valves, especially suitable for high steam pressures and temperatures, the valve seat ring 3, which may be of hardened steel alloy " Stellited," is secured to the valve body by means of a flanged inlet branch 8 made separate from the valve body and secured thereto by studs 6 and nuts 7, and the valve stem 12 is carried by a guide 9 formed integral with the body. Outlet pressure acting on the diaphragm 22, or a piston, bellows or the like, tends to close the valve, through the bell-crank lever 14, against the pressure of a spring- loaded lever 23. In cases where the pressure on the diaphragm is controlled by a relay valve operated by low pressure fluid, the rod 18, having to pass through a packing gland, is laterally restrained, and a roller on one arm of the bellcrank lever engages a slotted head on the end of the rod.
Patent GB-1445940-A (GB)
Title: Inorganic-organic plastics
IPC: C08K3/34
Filed: 1974-11-27
Abstract: 1445940 Modified polyurea-silica aerogels BAYER AG 27 Nov 1974 [30 Nov 1973] 51297/74 Heading C3R A material comprising a polymer and silica gel in xerosol form is obtained by mixing (a) at least one organic polyisocyanate, (b) an aqueous alkali metal or ammonium silicate solution or sol., and (c) at least one compound containing at least one hydrogen atom reactive with isocyanate and at least one ionic group and/or non-ionic but hydrophilic group, (b) and (c) being mixed first, or (a), (b) and (c) simultaneously. Preferably the weight ratio (a) : (b) is 7 : 3 to 2 : 8, and (c) provides 2-200 milliequivalents of ionic group and/or 1-50 g. of non-ionic-hydrophilic group per 100 g. of (a). Conventional silicate-hardeners, activators, stabilizers, emulsifiers, fillers and blowing agents may be added also. In Examples 1-8 foams are prepared by mixing a component I, 150 p.b.w. of a dimer-depleted crude polyphenylpolymethane polyisocyanate (30% or 50% sulphonated with SO 3  in Examples 5-7) plus 20 p.b.w. of CCl 3 F with component II, 150 p.b.w. of 44% water glass (Na 2 O : SiO 2  of 1 : 2 molar ratio) (34%, molar ratio 1 : 3 in Example 3), 1À5-2À5 p.b.w. triethylamine plus 0À2 p.b.w. emulsifier, with or after component III, 1À5-20 p.b.w. of H 2 N-C 2 H 4 -NH-C 2 H 4 -SO 3 Na, or In Examples 9-20 150-200 p.b.w. of polyisocyanate are used, the CCl 3 F is sometimes omitted, 10-200 p.b.w. of water glass are used, with a silicone foam stabilizer, and component III contains 5-35 p.b.w. of water and 5-35 p.b.w. of a ethylene oxide adduct of butanol or nonyl phenol. In Examples 21-28 cement may be added to component I (50 p.b.w.) and/or component II (50 or 100 p.b.w.) and component III is sodium dimethylolpropionate or tartrate (50 p.b.w.). In Examples 29-35 unfoamed products are obtained from 100 p.b.w. of the polyisocyanate, 200 p.b.w. of the water glass and 5 p.b.w. of sodium trimethylolpropane mono - tetrahydrophthalate, Na dihydroxypropoxy - benzene sulphonate, Na dimethylolpropionate, (HOCH 2 ) 2 C 2 H 3 .SO 3 Na, alkaline BuN(C 2 H 4 OH) 2 Me 2 SO 4  product, or disodium tartrate.
Patent GB-1092814-A (GB)
Title: Sensitive silver halide photographic materials and emulsions therefor
Inventor: GOFFE CHARLES ALLEN
IPC: G03C1/043
Filed: 1964-12-17
Abstract: 1,092,814. Photographic materials. EASTMAN KODAK CO. Dec. 17, 1964 [Dec. 17, 1963], No.51378/64. Heading G2C. A sensitive photographic material comprises a support bearing a layer of silver halide emulsion whereof the silver halide contains at least 60 mole % of silver chloride and either this layer or an adjacent water-permeable layer contains a water-soluble block polymer of polyoxypropylene and polyoxyethylene in which the polyoxypropylene moiety has an average molecular weight of from 800 to 3000 and of which the polyoxyethylene units constitute from 10 to 70% by weight. The block polymer may comprise the residue of a polybasic acid, a polyhydroxy compound, a polyamine, a polyamide or a polythiol obtained by removal of 2 or more hydrogen atoms and/or an alkyl, alkyl carbonyl, aryl carbonyl or alkaryl carbonyl group at the end of a chain. The emulsions may contain quaternary ammonium, phosphonium and sulphonium salts to increase speed (see Specifications 557,178; 556, 457; 556,458; 558, 710; 874, 082 and 911, 501).
Patent GB-1473806-A (GB)
Title: Furnaces
IPC: C21D1/767
Filed: 1975-12-17
Abstract: 1473806 Vacuum furnaces IPSEN INDUSTRIES INTERNATIONAL GmbH 17 Dec 1975 [15 Jan 1975] 51542/75 Heading F4B A vacuum furnace for heat treating a charge 20 comprises a heating chamber 15 having first and second gas circulation fans 27, 28 disposed relative to one another so as to produce a turbulent gas circulation rather than a stable gas circulation within the furnace. The speeds and rotational senses of the fans 27, 28 can be varied independently of each other. More than two fans may be provided. In use the chamber 15 is evacuated by means of a pump (not shown) through conduit 13 and duct 14 and heated to the desired temperature by means of radiant heating elements 22 and 23. The required gas treatment atmosphere, e.g. for cementation of the charge, is supplied to the heating chamber through a connection 31.
Patent GB-1117388-A (GB)
Title: High molecular weight mannich bases as engine oil additives
Inventor: OTTO FERDINAND PHILIP
IPC: C10M159/16
Filed: 1966-11-17
Abstract: Condensation products of (1) high molecular weight alkyl substituted phenol wherein the alkyl substituent is derived from a polyalkene of molecular weight 600 to 3000, (2) an amine containing an NH group, and (3) an aldehyde in a molar ratio of 1:0.1 to 10:0.1 to 10 respectively may be prepared by reacting the materials at 20 DEG  to 200 DEG  C.  The alkyl substituents may be derived from polypropylene, polybutylene or polyamylene, which may be reacted with phenol, resorcinol, hydroquinone, catechol, cresol, xylenol, amylphenol, hydroxydiphenyl, benzylphenol, phenylethylphenol, phenol resins, methylhydroxydiphenyl, guiacol, naphthols and methyl, tolyl, xylyl and benzyl naphthols, anthranol, phenanthrol, phenoxyphenol, chlorophenol and hydroxyphenyl sulphides in the presence of boron trifluoride etherate.  Specified amines include alkylene diamines, polyalkylene polyamines and N-acyl derivatives thereof, and aromatic and heterocyclic amines.  Specified aldehydes are formaldehyde, acetaldehyde, aldol, benzaldehyde and furfural. The products are useful as lubricating oil additives.  Examples describe the preparation of condensates from formaldehyde, polypropenylphenol and (1) dimethylamine, (2) dimethylaminopropylamine, (3) tetraethylenepentamine, (5) N - acetyl tetraethylenepentamine and (6) diethylenetriamine; from formaldehyde, polybutenylphenol and (4) tetraethylenepentamine; and from formaldehyde, polypropenylphenol sulphide and (7) diethylenetriamine.ALSO:Lubricating compositions comprise natural or synthetic oils and detergent additives which are condensation products of (1) an alkenyl substituted phenol wherein the alkenyl substitutent has a molecular weight of 600 to 3000, (2) an amine having an NH group and (3) an aldehyde in molar ratios of 1:0.1-10:0.1-10. The compositions may also comprise conventional oiliness and extreme pressure agents; corrosion, oxidation and rust inhibitors, viscosity index improvers, colouring agents and auxiliary detergents.  The phenol may be a polypropenyl, polybutenyl or polypentenyl phenol.  The aldehyde may be formaldehyde, acetaldehyde, aldol, benzaldehyde or furfural. The amine may be an alkylene or polyalkylene polyamine or acyl derivative thereof, or aromatic or heterocyclic amine.  Many suitable reactants are listed, and examples describe compositions comprising mineral lubricating oils, 1,3-dimethylbutyl zinc dithiophosphate as corrosion inhibitor, and condensation products of formaldehyde, polypropenylphenol and (1) dimethylamine, (2) dimethylaminopropylamine, (3) tetraethylene pentamine, (5) N-acetyl tetraethylene pentamine and (6) di-ethylene triamine; of formaldehyde, polybutenylphenol and (4) tetraethylene pentamine; and of formaldehyde, polypropenylphenol sulphide and (7) diethylene triamine.
Patent GB-1497068-A (GB)
Title: Support systems
IPC: E04B2/78
Filed: 1974-11-29
Abstract: 1497068 Structural bars SHARP & LAW Ltd 20 Nov 1975 [29 Nov 1974] 51809/74 Heading E1K [Also in Division F2] A support system for use in partition walling and in supporting shelving comprises an elongated post (Fig. 1) having a core 2, four face structures 3 to 6 each formed by a first pair of spaced flanges such as 7, 8 each extending longitudinally of the post and delineating a first longitudinally extending slot 9, webs 10 to 13 joining the face structures to the core, and second flanges e.g. 14, 15 extending from the webs 10 to 13, delineating a second longitudinally extending slot 16 aligned with the first slot 9, and dividing the space between the first flanges and the core into first and second areas 17, 18, the second area opening into a groove 19 in and extending the full length of the core, and an elongated strip (Figs. 2 and 3) having a series of longitudinally spaced holes 21, 26, which is a push fit into one of the two areas, the strip being so shaped that when fitted a space is left between the holes 21, 26 and the core 2.
Patent GB-1481445-A (GB)
Title: Plastics swab-sticks
IPC: A61F13/20
Filed: 1974-11-29
Abstract: 1481445 Surgical swabs PAPERSTICKS Ltd 20 Oct 1975 [29 Nov 1974] 51814/74 Heading A5R [Also in Division B5] A plastics swab stick 7, Fig. 10, e.g. of polypropylene is provided with transverse indentations throughout at least one end to facilitate adhesion of a swab. The stick may be of solid, or tubular section and the indentations may comprise knurling, or circumferential grooves 25 which may extend all around the stick. The grooves 25 may be located along all the length of the stick, or only at one end, or only at each end, serving to key into swabs of absorbent material 24 upon the setting within the grooves 25 of a coldsetting emulsified adhesive. The stick is produced from a plastics extrusion (3) Fig. 1, (not shown) (see Division B4-B5).
Patent GB-1096436-A (GB)
Title: Method for making rigid cellular polyurethanes containing antimonates (iii)
IPC: C08G18/22
Filed: 1964-12-22
Abstract: A rigid cellular polyurethane is prepared by reacting a polyfunctional active hydrogen-containing compound with an organic polyisocyanate in the presence of a blowing agent, an organic antimonate (III) compound soluble in the reacting mixture and a small amount of water sufficient to control the reaction rate. Preferable amount of water is 0.25-1.25% by weight of the active hydrogen containing compound.  The organic antimonates are of the formula (RO)3- x; Sb Clx;, where y = Cl, x = 0,1 2, R is the residue of an alcohol which may contain substituents such as halogen, hydroxyl and ether oxygen atoms.  Typical antimonates (III) are tris (2-chloroethyl) antimonate (III), tris (1,3-dichloro-2-propyl) antimonate (III) and antimony-containing polyether polyols, The active hydrogen-containing compound can be a polyfunctional polyester, polyesteramide or polyether.  Suitable blowing agents are carbon dioxide produced in situ and low boiling halogenated (preferably fluorinated) aliphatic saturated hydrocarbons such as trichlorofluoromethane and mixtures of these.