baber/WOPTO huggingface dataset:
Patent GB-1312287-A (GB)
Title: Magnetic recording media
IPC: C10M105/24
Filed: 1970-09-11
Abstract: 1312287 Magnetic recording media BADISCHE ANILIN- & SODA-FABRIK AG 11 Sept 1970 [13 Sept 1969] 43524/70 Heading H1H Magnetic recording media comprises a non- magnetizable support and a firmly adherent layer based on a particulate magnetic pigment dispersed in a binder and including from 2 to 10% by weight, based on the dry weight of the magnetic layer, of a lubricant consisting of a mixture of predominantly branched fatty acids containing at least 95% by weight of fatty acids having twelve to eighteen carbon atoms and at least 40% by weight of branched fatty acids having eighteen carbon atoms, which mixture is liquid at room temperature. Specified magnetic pigments are rod shaped and cubeshaped γ-Fe 2 O 3 , particulate alloys of iron, cobalt and/or nickel and ferromagnetic chromium dioxide. Specified binders are copolyamides, polyurethanes, polyvinyl chloride and vinyl chloride copolymers. Other fillers or pigments, e.g. carbon black, graphite, quartz powder and/or non-magnetizable powder based on silicates may be added. The support may be of polyvinyl chloride or polyethylene terephthalate film and a layer of a vinylidene chloride copolymer may be applied to the support prior to the application of the magnetic layer.
Patent GB-899508-A (GB)
Title: Photoelectric scanner for line tracing equipment
IPC: B23Q35/128
Filed: 1960-12-19
Abstract: 899,508. Electric motors; phase shifting. CANADIAN WESTINGHOUSE CO. Ltd. Dec. 19, 1960 [Feb. 4, 1960], No. 43582/60. Classes 35 and 38 (2). [Also in Group XL (b)] A photo-electric scanner for a line following system (see Group XL (b)) comprises a photoconductive cell rigidly coupled to a magnet situated in a varying magnetic field. A photoconductive cell 10, Fig. 1, is fixed in a tubular permanent magnet 11, mounted on a resilient tube 14. Magnet 11 is surrounded by four equally-spaced electromagnets 22 which are fed in quadrature to provide a rotating field. Magnet 11 and cell 10 move in a circular path centred on their rest positions. In a modification, Fig. 5 {not shown), the cell and magnet are at opposite ends of an arm with an intermediate resilient mounting. An arbitary reference plane in the energization of the magnets may be rotated by rotating the magnets physically or by shifting the phase of the energization. This is done by connecting coils 36 and 37, Fig. 4, of a stator to an A.C. supply directly and through a condenser 40 respectively. They are thus energized in quadrature and the rotating field produced is picked up by rotor coils 38, 39 connected to magnets 22. The phase of excitation depends upon the relative position of the rotor and stator. Specification 890,887 is referred to.
Patent GB-1497253-A (GB)
Title: Step ladders
IPC: E06C1/32
Filed: 1974-12-18
Abstract: 1497253 Convertible step/extension ladder ABRU ALUMINIUM Ltd 18 Dec 1974 [18 Sept 1973] 43859/73 Heading E1S A convertible ladder comprises two ladder portions connected by hinge plates 6 and a lockable pivoted link system 4, 5, the hinge plates 6 being pivotally connected to the stiles 1 of one ladder portion and slidably engaged with the stiles 2 of the other ladder portion, and the link system 4, 5 extending between the hinge plates 6 and stiles 1. The hinge plates carry nylon sliders engaged in grooves in the stiles 2 The stiles have non-slip feet 10. When used as a step-ladder, as shown, mating knuckle joint parts 7, 8 at the tops of the stiles 2, 1 are interengaged, and the ladder is braced by the link system 4, 5. By sliding the hinge plates 6 down the stiles 2 and engaging the knuckle joint parts 8 with a tread 3 of the other ladder portion, the step-ladder may be used on uneven levels, e.g. stairs (see Fig. 4, not shown). By folding the link system 4, 5 to bring the ladder portions parallel, a sliding-extension ladder is obtained, which is securable in an adjusted length by engaging a hook 9 on a tread 3 of one ladder portion with a tread of the other ladder portion (see Fig. 5, not shown).
Patent GB-1040036-A (GB)
Title: Dialdehyde polysaccharide derivatives
IPC: C08B15/04
Filed: 1964-10-29
Abstract: Dialdehyde polysaccharide derivatives containing 0.5-100 mole per cent of units represented by <FORM:1040036/C3/1> where Z is <FORM:1040036/C3/2> and M is an alkali metal, are made by treating a slurry of a dialdehyde polysaccharide, containing 0.5-100 mole per cent of dialdehyde saccharide units, in water, water-miscible organic liquids, or mixtures of water and such liquids, the ratio of polysaccharide to liquid being 1:4 to 1:20, with hydrogen peroxide at 20-60 DEG  C.  Specified organic liquids are methanol, ethanol, isopropanol, acetone and methyl ethyl ketone.  When Z is COOH, the reaction may be carried out at 40-60 DEG  C. in presence of an acid catalyst, and when Z is <FORM:1040036/C3/3> the reaction temperature is preferably 20-40 DEG  C., and anhydrous conditions are used.  The alkali salt is prepared by neutralizing the hydroxyperoxide product with alkali or alkali metal alcoholate.  The derivatives, which are easily dispersible or soluble in water, may be used for insolublizing polymers or for forming paper-pulp additives (see Division D2).  The hydroxyperoxide derivative decomposes when heated to form a rigid cellular material.  Examples describe the preparation of carboxyl derivatives of starch and amylose and the hydroxyperoxide derivative of corn starch, and the formation of a rigid cellular material by heating a layer of the hydroxyperoxide derivative of dialdehyde starch on a metal plate to 40-50 DEG  C.ALSO:An additive for improving the wet-strength of paper pulp comprises a dialdehyde polysaccharide derivative containing 0.5-100 mole percent of units of formula <FORM:1040036/D1-D2/1> where Z is -COOH, <FORM:1040036/D1-D2/2> or <FORM:1040036/D1-D2/3> and M is an alkali metal.  In an Example, bleached sulphite pulp is mixed with 0.5 wt per cent (based on oven dry pulp) of a dialdehyde polysaccharide wherein Z in the above formula is -COOH.  The pulp also contains cationic polyamide.
Patent GB-998637-A (GB)
Title: Electronic devices
IPC: H01L23/31
Filed: 1963-11-11
Abstract: 998,637. Semi-conductor devices. PHILCO CORPORATION. Nov. 11, 1963 [Nov. 9, 1962 (2)], No. 44369/63. Heading H1K. A semi-conductor or other electronic device is protected by an environmental material containing boron nitride. Fig. 1 shows a transistor in a sealed can 10 containing boron nitride powder 11 which acts as a dessicant and a heat conductor to cool the device. The boron nitride may be provided as a dispersion in silicone oil in the container. Fig. 3 shows a modification in which a thermoset epoxy resin or polystyrene web 14 containing boron nitride is applied to the junction area of a transistor to provide mechanical reinforcement.
Patent GB-1094089-A (GB)
Title: Current limiter circuit
IPC: B41J35/38
Filed: 1966-10-05
Abstract: 1,094,089. Field effect transistor circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 5, 1966 [March 29, 1966], No. 44428/66. Heading H3T. [Also in Division G3] A current limiter circuit comprises an input terminal 16, an output terminal 20, and two field effect transistors 10, 12 interconnected as shown, the source terminal of transistor 10 being directly connected to the source terminal of transistor 12, the drain terminal of transistor 10 being connected over a resistor 18 to the gate terminal of transistor 12, and the drain terminal of transistor 12 being connected over a resistor 22 to the gate terminal of transistor 10. The Specification explains with reference to Fig. 2 (not shown), how this arrangement, which utilizes the drain-source voltage drop of one transistor to reverse bias the gate-source junction of the other transistor, effects the required current limiting, and shows that it can be operative with both A.C. and D.C. inputs. The f.e.t's. may be of the symmetrical type in which the source and drain terminals are interchangeable.
Patent GB-1394438-A (GB)
Title: Microwave amplifiers
IPC: H03F5/00
Filed: 1972-10-03
Abstract: 1394438 Travelling-wave tubes ENGLISH ELECTRIC VALVE CO 19 Sept 1973 [3 Oct 1972] 45439/72 Heading H1D A microwave amplifier includes a pair of electron beams 7, 7<SP>1</SP> directed along the respective spaces between a meander slow-wave structure 9 and a pair of opposed electrodes 8, 8<SP>1</SP>, whereby each beam is deflected by the transverse electric field to pass through a respective one of a respective pair of apertures 13, 13<SP>1</SP> in the screen 12 and impinge upon one or other of the semi-conducting diodes of respective diode pairs 14, 15 and 14<SP>1</SP>, 151, which diodes provide an amplified output signal. As shown, the meander line is provided with input and output coaxial lines and a dissipative load 11, and the diodes 14, 14<SP>1</SP> are connected to the inner, and diodes 15, 15<SP>1</SP> to the outer, conductor of an output coaxial line 17. The plate electrodes 8 and 8<SP>1</SP> may diverge towards the output end of the tube, and output line 17 may alternatively be a strip line.
Patent GB-1312680-A (GB)
Title: Vacuum operated sheet feeding mechanism for newspaper inserter
IPC: B65H3/08
Filed: 1970-09-24
Abstract: 1312680 Feeding sheets DIODE-GLASER Inc 24 Sept 1970 [14 Oct 1969] 45476/70 Heading B8R A sheet feeding apparatus comprises a pile receptacle, e.g. a table 36 adjustable along a platform 34 for supporting piles on edge, a vacuum gripper assembly with at least one rotatable gripper engageable in one position with a marginal portion of an end sheet of the pile and movable on a carriage 96 along a path into a release position to bend said marginal portion away from the pile without moving the remainder of the sheet, and a conveyer unit mounted on said carriage for movement therewith and adapted to receive a bent sheet and withdraw it from said pile. The vacuum gripper comprises suction cups 182, Fig. 5, resiliently mounted on a tubular shaft 138 rotatably mounted on the carriage 96, Fig. 6, which is pivotally mounted by a shaft 104 on the main frame and oscillated by a crank and lever 90. The conveyer unit comprises two endless belts 118 located on wheels on shafts 138, 104, pinch rollers 126, Fig. 6, also mounted on the carriage 96, and biased into contact with the belts at shaft 104, and pinch rollers 160, Fig. 5, biased into contact with the belts at shaft 138, these latter rollers being mounted on arms 154 having spring-biased cam followers 168 co-operating with cams 164 on shaft 138. This shaft is connected at one end via a crank assembly 146, Fig. 5, to the main frame and has vacuum control valve plates 204, 208 at its other end, an apertured plate 212 pivotally connected to the carriage frame, being sandwiched therebetween. In operation, with the carriage 96 in its uppermost position, the suction grippers 182 are extended against their springs into contact with a marginal portion of a sheet by engagement with stationary cams (192), Fig. 12 (not shown), the carriage then being lowered about pivot shaft 104 causing shaft 138 and the associated suction grippers 182 to rotate clockwise, as viewed in Fig. 1, as a result of the crank mechanism 146, this rotation causing the grippers to retract as they are released from the cams (192). At the same time, valve plate 212 is lowered as far as a stop 240 and then relative movement between this plate and valve plates 204, 208 on shaft 138 cuts off the suction, releasing the bent-over, marginal portion of the sheet which is pinched by the rollers 160 against the conveyer belts 118 and fed away, for instance into an open newspaper in a tray 25, the rollers 160 being lowered to the belts by the cams on shaft 138. As the carriage is raised again, rollers 160 are raised from the belts and vacuum is restored unless the previously fed sheet does not actuate sensors (238), Fig. 3 (not shown), during its conveyance, in which case a solenoid 243, Fig. 5, prevents the valve plate 212 from restoring the vacuum.
Patent GB-1318460-A (GB)
Title: Beef flavour
IPC: A23L27/21
Filed: 1971-09-30
Abstract: 1318460 Beef flavour NESTLE SA 30 Sept 1971 [6 Oct 1970] 45546/71 Heading A2B A flavour is prepared by reacting together by heating in aqueous medium about 20-40 parts protein hydrolysate free from cystine and cysteine, about 0.09-1.5 parts of methionine, and about 0.5-6 parts of saccharine, the amount of water present being about 1-4 times the total weight of solids. In another form in the same manner there is reacted a mixture of about 20-40 parts of protein hydrolysate containing methionine but free of cystine and cysteine, and 2-12 parts of an acid hydrolysate of a carbohydrate-containing material, for example coffee chaff, oats, rye, barley, or spent coffee grounds. Also present may be a carboxylic acid. The product may be concentrated to a paste or dried to a powder.
Patent GB-1170730-A (GB)
Title: A device for Feeding, Guiding and Orientating Pressings
Inventor: PTACEK JOSEF
IPC: B67B3/064
Filed: 1968-09-25
Abstract: 1,170,730. Feeding lids. STROJIRNY POTRAVINARSKEHO PRUMYSLU. 25 Sept., 1968, No. 45600/68. Heading B8S. Lids are inserted into hopper 16 and agitated by agitator 12 carried by rotating bottom plate 11 which discharges the lids into shoot 4 down which they are allowed to pass one by one by pivoted separator 5 to be orientated by orientator 23. Operation of rod 8 pivots separator 5. Orientation.-If the lids slide bottom-downwards they come to rest against projection 26 and vertical reciprocation of the pivoted lever 23 moves them upwards but unchanged to slide down the top of shoot 6. If on the other hand the lids slide down shoot 4 bottom-upwards they come to rest a little lower down in pocket 25. When lever 23 moves upwards through the bottom of shoot 4 the lid is partly trapped in pocket 25 and so pivots backwards to slide down the top of shoot 6 bottom-downwards. In this way all the shoots are received in discharge shoot 7 uniformly orientated bottomdownwards. Alternatively, lever 23 may be positioned permanently to project upwards through the bottom of shoot 4.
Patent GB-1325464-A (GB)
Title: Dialkenyl-uracils their preparation and use in pharmaceutical  compositions
IPC: C07D239/553
Filed: 1970-09-25
Abstract: 1325464 1,3 - Dialkenyl - uracils ROBUGEN GmbH PHARMAZEUTISCHE FABRIK ESSLINGEN AN 25 Sept 1970 [27 Sept 1969] 45887/70 Heading C2C Novel compounds of the Formula (I) wherein R 1  and R 2  are the same or different straight or branched C 2-5  alkenyl groups, R 3  is a straight or branched C 1-4  alkyl group, an optionally substituted aryl or aralkyl group or a cycloalkyl, halogen, nitro or amino group, and X is H or halogen, may be obtained by alkenylating compounds of Formula (I) in which R 1  and/or R 2  are hydrogen atoms, the groups otherwise being as for (I) above. Alkenylation may be effected by means of an alkenyl halide in the presence of an acid binding agent. Pharmaceutical compositions having virostatic, antipyretic and sedative properties comprise a compound of Formula I above together with a pharmaceutical carrier or excipient in forms suitable for oral, topical, rectal, intravaginal or parenteral administration.
Patent GB-1248044-A (GB)
Title: Photographic camera
Inventor: NERWIN HUBERT
IPC: G03B17/52
Filed: 1968-09-27
Abstract: 1,248,044. Self-processing cameras. EASTMAN KODAK CO. Sept.27, 1968 [Oct.16, 1967], No.45963/68. Heading G2A. In a camera for exposing and processing transparency units each provided with a rupturable pod of processing material, the unexposed units are housed in a storage chamber 10 and moved sequentially into an exposure chamber 11, after which they are developed and then pushed out of the camera through a light-tight slot 36a. As shown, each unit 15 has mounted at one end thereof two rupturable pods 18, 19 containing developing and fixing agents respectively, and held in position by a covering sheet (20), Fig.4(not shown), which is subsequently stripped away together with the empty pods. The units are stacked in storage chamber 10, and urged downwards by a spring 13. The lower-most one is transported into the exposure chamber 11 by a slide 22 having a hooked end 23 and moved by a handle 25. At the other end of the slide is a roller 27. After exposure, the slide is moved back to the right again, the transparency being prevented from moving with it by a spring- loaded locking plate 34. During this return movement of the slide, roller 27 ruptures the first pod 18 and spreads the developing agent therein over the transparency. The slide is now in position to move the next transparency towards the exposure chamber, and as it does so the previous transparency is pushed out through the slot 36a Fig. 5 (not shown). During this movement a second roller 37 provided near the exit slot ruptures the second pod 19, so that the fixing agent is spread over the transparency as it leaves the camera. The covering sheet can now be stripped away, leaving the transparency ready for viewing.
Patent GB-1070128-A (GB)
Title: Method of recovering fish oil
IPC: C02F9/00
Filed: 1965-10-29
Abstract: Water which has been used for flushing solids from fish-cutting machines is treated to remove coarse solids and then for recovery of fish oil. After removal of coarse solids, e.g. by straining, removal of fine solids and recovery of fish oil may both be carried out by centrifuge, preferably in a single centrifuge of the type which allows simultaneous discharge of three different components, namely fine solids, oil-free water, and an oil-water emulsion which is then heated to break the emulsion in order to recover the fish oil.
Patent GB-1339653-A (GB)
Title: Elastomers
IPC: C08F8/00
Filed: 1971-10-04
Abstract: 1339653 Heat-reversibly cross-linked elastomers AQUITAINE TOTAL ORGANICO 4 Oct 1971 [7 Oct 1970] 46056/71 Heading C3P Elastomers containing heat-reversible crosslinking are obtained by reaction between a metal salt and co-ordinating basic groups present in the elastomer, said groups containing an electron-donor nitrogen atom. In examples, butadiene/2(or 4)-vinyl pyridine, butadiene/ styrene/2(or 4)-vinyl pyridine, butadiene/2- methyl-5-vinylpyridine, and butadiene/dimethyl aminoethylmethacrylate elastomeric copolymers are cross-linked with ZnCl 2 , NiCl 2  or CoCl 2 , and in some cases are then compounded with a filler selected from carbon black, silica hydrate, kaolin, ground glass fibre and asbestos.
Patent GB-1055888-A (GB)
Title: Improvements in and relating to polymers
IPC: C08L75/02
Filed: 1963-11-21
Abstract: A process for the preparation of a polymer from (1) a polycarboxylic acid comprising at least 75% dimerized fat acid, (2) urea or thiourea, and (3) an organic diamine containing from 4 to about 36 carbon atoms, the mole ratios of (1) and (2) being in the range of about 9:1 to 2.5:7.5 and the mole ratio of (1) plus (2) to (3) being about 1:1 comprises heating the reactants at a temperature of at least 120 DEG  C.  The term "fat acid" is defined as being a natural or synthetic, saturated, ethylenically unsaturated or acetylenically unsaturated monobasic aliphatic acid having a hydrocarbon chain of 8 to 24 carbon atoms, many such acids being specified.  Exemplified diamines are 1:2- and 1:3-diaminobutane, bis-aminoalkyl ethers and tetramethylene, pentamethylene, hexamethylene, nonamethylene, decamethylene, cyclohexene, m-xylylene, p-xylylene and phenylene diamine. Dicarboxylic acids which may be present in the reaction mixtures are adipic, azeleic, sebacic, terephthalic and isophthalic acids.  Reference has been made by the Comptroller to Specification 773,964.
Patent GB-1403783-A (GB)
Title: Optical systems
IPC: H04N13/122
Filed: 1972-10-05
Abstract: 1403783 Stereoscopic systems CANON KK 5 Oct 1972 [5 Oct 1971] 46060/72 Heading G2J An image display system for giving a stereoscopic effect comprises a lenticular screen 21, 51 which transmits an incident light beam with a divergence of up to 20 degrees in the parallex direction and of at least 10 degrees in a direction normal to the parallax direction; means for projecting an image on to the screen, the image possessing parallax information, and a convergent optical system 31 e.g. a Fresnel lens arranged with its focal point lying within the thickness of the lenticular screen so that the screen may be viewed through the lens. In one embodiment (Fig. 3) the lenticular screen 21 comprises two lenticular sheets having cylindrical lenses which are all parallel, the sheets being arranged back-to-back each side of a diffusion plate. The lenses on the right-hand side of screen 21 produce out-of-focus line images on the central diffusion plate. In another embodiment (Fig. 7) the lenticular screen 51 comprises lenticular sheets back-to-back each side of a diffusion screen with the cylindrical lenses of one sheet lying normally to those of the other sheet. With either of screens 21 or 51, the screen may be parallel to the plane of the converging lens 31 e.g. Fig. 3 or at an angle of between 3 degrees and 50 degrees, preferably 20 degrees, to enhance the perspective effect e.g. Fig. 7. The projection apparatus may comprise three projectors Fig. 3; a pair of images projected from one projector through a separating mirror system, Fig. 6 (not shown) and Fig. 7 or a C.R.T. which projects left and right images in turn on to a mirror which is rotated in synchronism to send alternate images through different optical paths, Fig. 8 (not shown). The projected images may be conventional or electrostatic photographs or holograms.
Patent GB-1273389-A (GB)
Title: Styrene polymer materials having flame-resistant properties
IPC: C08K5/03
Filed: 1969-09-19
Abstract: 1,273,389. Polystyrene compositions. CHEMISCHE WEBKE HULS A.G. 19 Sept., 1969 [20 Sept., 1968], No. 46196/69. Heading C3P Self-extinguishing thermoplastic moulding material comprises a styrene or α-methyl styrene polymer and 1 to 20 weight per cent, based on the polymer, of a bromination product of hexamethylbenzene. Specified polymers are polymers and copolymers of styrene and α- methyl styrene, e.g. with acrylonitrile and acrylic and methacrylic esters, ABS polymers and impact resistant styrene polymer blends and graft copolymers. The compositions may also contain chlorine and/or antimony compounds, e.g. chloroparaffins, chlorinated polyethylenes and antimony trioxide; conventional stabilizers, lubricants and fillers; and blowing agents. Many suitable materials are listed and examples describe compositions comprising brominated hexamethylbenzene and (1) polystyrene, butadiene/styrene copolymer, chloroparaffin, antimony oxide and lead phosphite, (2) polystyrene and butadiene/styrene copolymer, (3-7) polystyrene, butadiene/styrene copolymer, chloroparaffin and antimony oxide, (8) polystyrene, polybutadiene, chloroparaffin and antimony oxide, (9 and 10) polystyrene, butadiene/styrene, copolymer, chloroparaffin and antimony oxide, (11 and 12) polystyrene, chloroparaffin and antimony oxide, (13) polystyrene and (14) styrene/acrylonitrile copolymer.
Patent GB-1025604-A (GB)
Title: Improvements in or relating to oven window-door
IPC: F24C15/04
Filed: 1964-11-13
Abstract: 1,025,604. Oven doors. MILLS PRODUCTS Inc. Nov. 13, 1964 [April 23, 1964], No. 46295/64. Heading F4W. An oven door pivotally mounted on pivots 38 has a glass panel formed from two sheets of glass 11 (Fig. 3), spaced apart by a spacer 18 and held in position by a peripheral frame 13 which has a tape 22 of asbestos to provide a yieldable seating for the glass panels 11. The frame 13 seats in an outer channel-shaped frame 12 which supports a trim strip 16 made in varying shapes to provide the required appearance. This trim strip also supports a sealing gasket 50.