baber/WOPTO huggingface dataset:
Patent GB-1467851-A (GB)
Title: Aluminium alloy foils for use in high-voltage electrolytic capacitors
IPC: H01G9/04
Filed: 1974-10-08
Abstract: 1467851 Aluminium foil SIEMENS AG 8 Oct 1974 [25 Jan 1974] 43456/74 Heading C7A An aluminium alloy foil of composition: The foil may be prepared using Aluminium of at least 99À9% purity and may be annealed for one hour at 600C in a controlled atmosphere, etched and used in the manufacture of electrolytic  condensers.
Patent GB-1508690-A (GB)
Title: Magnetic roller
IPC: G03G15/09
Filed: 1976-10-20
Abstract: 1508690 Roller for magnetic brush development OCE-VAN DER GRINTEN NV 20 Oct 1976 [22 Oct 1975] 43541/76 Heading B2L [Also in Division F2] A magnetic roller comprises a rotatable cylinder 7 of diamagnetic material, e.g. Al, brass or stainless steel, and magnetic poles inside the cylinder, which poles extend in the axial direction and are formed by a series of axially adjacent like poles, at least one composite pole having a material of high magnetic permeability 13 between it and cylinder 7. The material 13 may be ferromagnetic material 0.1 to 1 mm thick. The roller is used in a magnetic brush developer wherein toner from hopper 3 is doctored at 15 to give a magnetic brush 4 which develops an electrostatically imaged web 5; the material 13 smooths out the fields of the separate magnets (e.g. of ferrite, up to 5 cm long, of field 800-1200 Gauss).
Patent GB-1487141-A (GB)
Title: Method of removing scale from polymerization reactors
IPC: B08B9/08
Filed: 1975-10-24
Abstract: 1487141 Removing scale from polymerisation reactors KUREHA KAGAKU KOGYO KK 24 Oct 1975 [27 Nov 19741 43841/75 Heading BIX [Also in Division C3] Scale formed during the polymerisation of a vinyl monomer and not removed during the discharge of the reaction product is removed by contacting the scale with a net which is inserted into the reactor and the net withdrawn with the removed scale. The term 'net' as used here includes parallel filaments as well as filament networks. The removal of scale from a reactor, used for the suspension polymerisation of vinyl chloride, with a polyvinylidene fluoride fibre net is exemplified.
Patent GB-438455-A (GB)
Abstract: 438,455. Thermal switches; current meters. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. July 11, 1935, No. 19845. Convention date, July 14, 1934. [Class 38 (v)] [See also Group XXXVI] A current-indicating instrument or a current - operated electric switch is made from an E- shaped piece of bimetal, two of the arms of which, e.g. the outer arms 19, carry the current and the third arm 16 of which carries a pointer 17 or a contact. The third arm 16 does not carry any current and serves both to compensate for variations of ambient temperature and also, for reasons set out in the Specification, to cause the pointer to reach its final position more quickly. Instead of the arms 19, 16 being straight they may be bent into coils or zigzags, Figs. 2-4, (not shown).
Patent GB-890777-A (GB)
Title: Improvements in or relating to television and other signal recording systems
IPC: H01J31/06
Filed: 1960-12-21
Abstract: 890,777. Electrostatic recording; television. TELEFUNKEN G.m.b.H. Dec. 21, 1960 [Dec. 22, 1959], No. 43887/60. Class 40 (2). [Also in Group XL (a)] A television signal is recorded as transverse tracks of electrostatic charge on a tape 12 by directing an electron beam 4, modulated by the input signal 2 at a linear storage electrode 5 of mesh form, one traverse of the beam corresponding to one line of the picture. A secondary cathode 6 produces a beam which is modulated by the stored pattern on the mesh 5, accelerated by a spiral 9 and focused by a lens 10, via a Lenard window 11 on to the tape. The primary recording 2, 4, 5 has the time-resolution required by the picture signal, while the image of the pattern on the mesh 5 is transferred relatively slowly to the tape, to produce a workably intense charge pattern on it, the time available being the transit time of a line of the picture. The tape may alternatively be led through suitable traps and exposed in vacuo, while in a further embodiment, the window 11 may be replaced by a fluorescent screen which builds up a charge pattern on the tape by irradiation.
Patent GB-971751-A (GB)
Title: Allenic aldehydes and process of manufacturing them
IPC: C07C57/03
Filed: 1960-12-23
Abstract: 971,751. Allenic aldehydes, alcohols, acids, salts and esters. EASTMAN KODAK CO. Dec. 23, 1960 [Dec. 24, 1959], No. 44323/60. Heading C2C. The invention comprises 2,2-dialkyl-alka-3, 4- dien-1-als of the formula in which R 1  and R 2  are each an alkyl group containing from 1 to 7 carbon atoms and R 3  and R 4  are each H or an alkyl group containing from 1 to 7 carbon atoms. These compounds may be made by reacting a 2-alkyl aliphatic aldehyde R<SP>1</SP>CH(R<SP>2</SP>).CHO with an acetylenic alcohol of the formula HC#C-C(R<SP>3</SP>)(R<SP>4</SP>)-OH in the presence of an acidic catalyst, such as phosphonic acid, toluene-sulphonic acid, methionic acid, boron trifluoride and acidic ion exchange resins. If traces of acid are present in the aldehyde no further catalyst may be necessary. A solvent of higher boiling point than the reactants which boils not higher than 250‹C. may be used, e.g. di-isopropyl benzene. The aldehyde may be reduced, e.g. by formalin in alkaline solution, to a 2,2-dialkyl-alka-3, 4-diene- 1-ol, or oxidized to the corresponding acid or salt thereof. The aldehyde may be converted simultaneously to an acid and an alcohol by the Cannizzaro reaction. The alcohols and acids may be converted to esters. Detailed examples describe the preparation of 2,2-dimethyl-penta- 3,4-dien-1-ol and the corresponding alcohol and acid; 2-ethyl-2-methyl-penta-3, 4-dien-1-al; 2- butyl-2-ethyl-penta-3, 4-dien-1-al; 2-methyl-2- propyl-penta-3, 4-dien-1-al; 2, 2, 5-trimethylhepta-3, 4-dien-1-al; 2, 2, 5-trimethylhexa-3, 4- dien-1-al; 2, 2-dimethylocta-3, 4-dien-1-al; 2, 2- dimethyl-6-ethyl-deca-3, 4-dien-1-al; 2, 2, 5-trimethyl-undeca-3, 4-dien-1-al.
Patent GB-1333282-A (GB)
Title: Apparatus for straightening elongate workpieces
IPC: B21D3/02
Filed: 1971-09-23
Abstract: 1333282 Straightening TH KIESERLING & ALBRECHT 23 Sept 1971 [22 March 1971] 44443/71 Heading B3M A straightening apparatus comprises a pair of opposed skew rolls 1, 2 of which one roll is formed of three sections 4, 5, 6 and the outer sections are journalled on projections of the intermediate section and each outer section comprises an eccentric disc 7, 8, Fig. 4, which is journalled on the projections 5a, 5b of the intermediate section 5 and an outer ring 13, 14 which forms the roll surface. The eccentric discs are each adjustable by a screw, Fig. 3 (not shown), connected between a stud 17, 18, Fig. 4, and a fixed bracket 21, 22. The outer rings 13, 14 are mounted on bearings 10 on the discs and driven from the intermediate section 5 through gearing (27), (28), (30), (31), Fig. 5 (not shown). The apparatus may be used for rods or tubes.
Patent GB-1446605-A (GB)
Title: Pitch error compensation systems
IPC: G05B19/404
Filed: 1973-09-21
Abstract: 1446605 Automatic pitch error compensation TOYODA-KOKI KK 21 Sept 1973 [23 Sept 1972] 44460/73 Heading G3N Pitch error of a leadscrew 12, driving slide 10, and driven by pulses from {electro-hydraulic} pulse motor 18 is compensated by storing compensation data representing pre-set positions in the range of movement of the slide at which a compensating incremental pulse is to be added to, or subtracted from, a programmed movement, to ensure compensation of the leadscrew pitch error for any slide movement and calling up from the stored compensation data, in dependence on initial and final positions, and movement direction of a subsequent move to be made, data appertaining to pre-set positions encompassed by the move the corresponding compensating incremental pulses being accumulated to modify the content of a preset counter 16 initially storing incremental data of the subsequent move, to compensate the pitch error. Counter 16 is then counted to zero by the pulses controlling the pulse motor 18. The content of counter 16 is added to {via AND A3 } or subtracted from {via A4 } the content, of counter 20, representing an absolute slide position indication neglecting pitch error. In dependence on this content, fed to unit 14, compensation data appropriate to the initial and final positions, and direction of the subsequent movement is fed to counters 21, 22. A comparator circuit 23 determining the pre-set positions in the movement, ensures, via gates A7, A8, A10, and 03 that reversible counter 24 passes to counter 16, the accumulated number of compensating pulses, to be added to or subtracted from its content to compensate the pitch error for the movement. After a time delay, flip-flop FF1 is set by the compensating pulses to open gate Al, or A2, enabling pulses from generator 17 to reach the pulse motor drive circuit 18. Pulses from Al, or A2 also, via OR O1, count counter 16 to zero detected by circuit 19, resetting FF1 to stop motor drive and resetting counter 24 to zero. The pitch error is calibrated by laser measurement of the actual slide movement produced for a given number of motor drive pulses, leading to the calibration of Fig. 2 (not shown), and compensation data tabulated in Fig. 3 (not shown), giving, in the form of pulse counts, the pre-set positions, together with the sign of the compensating pulse associated with each.
Patent GB-1279113-A (GB)
Title: A method of supercharging an engine
Inventor: ZEHNDER GOTTLIEB
IPC: F02B37/02
Filed: 1969-09-09
Abstract: 1279113 Supercharging I C engines BROWN BOVERI & CO Ltd 9 Sept 1969 [11 Sept 1968) 44479/69 Heading F1B In a method of supercharging a multi-cylinder I. C. engine by means of a supercharger supplied with the exhaust gases, the exhaust gases from at least one cylinder are supplied at generally constant pressure to the supercharger and the exhaust gases from the remaining cylinder or cylinders are supplied in pulsed form to the supercharger. In the 7-cylinder 4-stroke Diesel engine shown, having the firing order 1-2-4-6-7-5-3, cylinders 3, 4, 7 and 2, 5, 6 are combined in respective groups with a common exhaust pipe 8 and 9 respectively (or individual exhaust pipes going to a common junction for each group). With this arrangement, exhaust pulsations in the exhaust pipes 8, 9 follow one another twice at an interval of 205 5/7 degrees and once at an interval of 308 4/7 degrees, the latter interval tending to produce a sharp drop in pressure at the gas inlet to the supercharger 10. This is avoided by passing the exhaust gases from cylinder 1 via an exhaust pipe 11 and an optional diffuser 19 to a chamber 12 which at least partially smooths out the exhaust pressure peaks to provide a generally constant pressure in outlet pipes 13, 14. The pipes 13, 14 are joined to the pipes 8, 9 respectively, the generally constant pressure in the former partially compensating for sharp drops in pressure in the latter. The pipes 8, 9, 13, 14 may be constricted at their junctions to accelerate the gas flow to reduce back-flow into the chamber 12. To eliminate interaction between cylinder 1 and the other cylinders, valves may be provided in the pipes 13, 14, their opening being so regulated that gases are supplied from the chamber 12 to the supercharger 10 only for a definite period in the firing order. There may be more than one supercharger 10, which may be a turbo-charger or an aerodynamic pressure-wave machine.
Patent GB-1418909-A (GB)
Title: Drinking straws and their manufacture
IPC: A47G21/18
Filed: 1972-09-27
Abstract: 1418909 Coated paper J POLLITT & SON LTD 13 March 1973 [27 Sept 1972] 44666/72 Heading B2E [Also in Division C6] Paper suitable for manufacturing drinking straws is produced by extrusion coating both faces of a stiff paper strip with 10-14 grams per square metre of a non-toxic plastics material e.g. polyethylene and curing the coating thereon (where necessary) and, coating the edges of the coated paper strip with adhesive gum.
Patent GB-1064848-A (GB)
Title: Method for the production of vinyl resins
IPC: C08F14/06
Filed: 1963-11-14
Abstract: 1,064,848. Copolymers of vinyl chloride and an alkyl acrylate. KUREHA CHEMICAL INDUSTRY CO. Ltd. Nov. 14, 1963 [Nov. 17, 1962], No. 45091/63. Heading C3P. Copolymers of vinyl chloride and an alkyl acrylate are made by a process which consists of polymerizing vinyl chloride or a mixture of monomers in which vinyl chloride is the major constituent in aqueous suspension in the presence of a catalyst to a degree of conversion of 50 to 90%; adding an alkyl acrylate having 4 to 12 carbon atoms in the alkyl group and further polymerizing to a conversion of 50 to 90%; then adding vinyl chloride or a mixture of monomers in which vinyl chloride is the major constituent and completing polymerization. In the second and third stages further catalyst may be added. The product comprises a vinyl chloride polymer core with alkyl acrylate polymerized round the core and with a further coating of vinyl chloride polymer and has improved impact resistance. The examples showthe copolymerization of vinyl chloride with octyl acrylate and vinyl chloride and vinyl acetate with decyl acrylate.
Patent GB-1323439-A (GB)
Title: Automatically operating on a workpiece with a cutting or forming  tool
IPC: B23Q35/06
Filed: 1970-09-22
Abstract: 1323439 Lathes SIEMENS AG 22 Sept 1970 [1 Oct 1969] 45173/70 Addition to 1242760 Heading B3B [Also in Division G3] In a lathe the tool traverse and/or the depth of cut are reduced for as long as the spindle torque, which is dependent on the machining performance, exceeds an upper threshold, infeed up to a maximum of the programmed profile is carried out as long as the torque exceeds a lower threshold, and during each machining cycle at the end of a section of the workpiece, the departure from the programmed profile is compared with the profile programmed for the next machining phase and in dependence on the comparison the next phase is by-passed or corrected. In the turning of a step on a shaft W, Fig. la, F is the final profile, and R is the unmachined stock. One of the first cuts will lie on line a, in which case the value XÁ corresponding to the deviation in the X direction between the programmed profile F and the actual profile will be larger during machining in phase S1 than in phase S2. Phase S2 can therefore be by-passed, and the cut can be made from phase S1 to phase S3. At the start of phase S3 deviation XÁ is reduced by the value Xe. When subsequently machining along line b, XÁ is smaller than the contour change in phase S2 and therefore this phase cannot be by-passed, but instead the value supplied to the control in this phase must be reduced by the amount of deviation XÁ. In the same way the deviation must be taken into account when machining a taper, Fig. 1b (not shown), or a circular arc, Fig. 1c (not shown). Fig. 2 illustrates a computer circuit for executing the requisite calculations. In the overflow store 1 of the series type the value XÁ is stored, which corresponds to the deviation between the programmed and the actual profiles. In a terminal value store 2 the value Xe corresponding to the increase in the co-ordinate in the X direction in the next stage is stored. Each of these stores is preceded by an adder 5, 6, respectively. Both stores are connected to a comparison computer circuit 4, and to a computer logic system 3. If the interpolation of phase S1 has been completed, a comparison is carried out between deviation XÁ at the end of the first phase and co-ordinate change Xe in phase S2. Depending upon whether XÁ is smaller or larger than Xe commands are issued by the logic system. Considering the broken line in Figs. 1a and 2, XÁ is larger than Xe, Xe in store 2 is subtracted from XÁ in store 1, and the value in store 2 reduced to zero. Several phases may be by-passed, or a check on the phases may be carried out only after several phases have been carried out.
Patent GB-1023850-A (GB)
Title: Improvements in or relating to incandescent lamps
IPC: H01K1/56
Filed: 1963-11-15
Abstract: 1,023,850. Electric incandescent lamps. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Nov. 15, 1963 [Nov. 19, 1962], No. 45210/63. Heading H1F. A small quantity, e.g. of the order of 10<SP>-3</SP>mg. or less per sq. cm. of bulb surface, of phosphorus is introduced into a tungsten-iodine lamp. The phosphorus may be introduced by coating the filament with a suspension of phosphorus nitride or tungsten phosphide or by heating the filaments in phosphorus vapour. A volatile phosphorus compound, e.g. hydrogen phosphide, may be introduced into the lamp.
Patent GB-454952-A (GB)
Abstract: 454,952. Feeding pallets &c. from stacks. WINGET, Ltd., and LANGFORD, H., Rochester, Kent. April 10, 1935, No. 11135. [Class 117] Apparatus for feeding articles such as pallets 10 from a stack comprises one or more pusher members 11 pivotally mounted on an endless chain &c. 1 and coacting with guides 17 whereby they are moved into operative position while travelling underneath the stack of articles. The pushers are mounted on levers 12 which are biassed so as to hang freely at other parts of the traverse of the chain, and guards 18, 19 may be provided to prevent the ends of the levers projecting beyond the chain or, alternatively, stops may be provided on the levers and chain to limit their swinging movement. The guides 17 or a section 20 thereof are preferably resiliently mounted to prevent damage when an obstruction occurs or, alternatively, the pushers may be provided with a breaking piece. The container 6 for the pallets has at its forward side a projection 6<c> for supporting the forward ends of the pile of pallets and allow only one pallet at a time to occupy the feeding position.
Patent GB-1062144-A (GB)
Title: Cathode ray tube envelopes
IPC: H01J5/24
Filed: 1965-10-27
Abstract: In manufacture of a cathode-ray tube envelope, the neck, funnel and rectangular viewing panel are formed separately, the funnel and viewing panel each having sidewalls provided with at least three reference protuberances projecting outwardly from two adjacent ones of the sidewalls.  The neck and funnel are aligned and sealed together and the large end of the funnel is ground to provide a sealing edge normal to the axis thereof.  The protuberances are ground to provide reference surfaces for aligning the viewing panel and funnel while their abutting edges are sealed together.  The tube may be a colour television tube of the shadow-mask type and the reference protuberances on the viewing panel may also be used for alignment purposes during formation of the multi-colour phosphor screen. Mandrels, grinding wheels, and centring and aligning devices are described for each step in the manufacture of the tube envelope.
Patent GB-1014967-A (GB)
Title: Finishing article holder
IPC: B24D9/08
Filed: 1963-11-19
Abstract: 1,014,967. Finishing tools. J. H. McKAY, and M. J. McKELLAR. Nov. 19, 1963, No. 45613/63. Heading B3D. A finishing article comprising a disc or pad faced with or carrying abrasive or polishing material and having a raised portion with openings therein is held by a holder having a recess to receive the raised portion with fingers therein to engage the openings, the finishing article being inserted in the recess against spring pressure and then turned so as to engage the openings with the fingers. A holder comprises a support pad 12 having a flexible peripheral portion 13 and a recess 16 in its face 15. A cylinder 31 permanently and rigidly affixed to the pad 12 contains a plug 34 having a threaded stud 38 projecting through a threaded opening in the closed end of the cylinder 31. The stud 38 has a threaded bore 71 to receive the threaded shaft of a power tool. A locating sleeve 33 located in the space between the plug and the cylinder is urged downwardly by a spring 32, movement being limited by engagement of a flange 35 on the sleeve with a flange 36 on the plug. An end cap 45 held against the bottom of the plug 34 by a screw 46 has one or more projections 72 engaging depressions 73 in the plug 34. The cap 45 also has fingers 21. An opening 41 extending entirely through the plug 34 and the closed end of the cylinder and partially through the threaded stud 38 contains a pin 42 urged upwardly by a spring 43 so that its lower end 44 lies in an aperture in the cap 45. The threaded stud 38 carries a knurled nut 52.  A finishing article 17 includes a drive member 18 having a raised portion 19 with openings 20 therein. To secure the article in the holder the raised portion 19 is inserted within the projecting locating sleeve 33, the parts moved up against the loading of the spring 32, the article rotated until the fingers 21 on the cap 45 pass through the openings 20 and the article further rotated to engage the fingers 21 with the portion 19. The nut 52 is then rotated to push the pin 42 down so that its lower end 44 enters one of the openings 20 to prevent " fly-off " of the article during use. In a modification, the cylinder 31 and plug 34 are integral.
Patent GB-1281042-A (GB)
Title: Transmission type projection screen
IPC: G03B21/62
Filed: 1969-09-16
Abstract: 1281042 Microcapsule-coated screen FUJI PHOTO FILM CO Ltd 16 Sept 1969 [16 Sept 1968 17 Sept 1968] 45694/69 Heading B2E [Also in Division G2] A light-transmitting projection screen comprises a transparent or frosted support, which may be glass or polyethylene terephthalate, triacetyl cellulose or polycarbonate film, coated with a transparent binder having dispersed therein microcapsules containing a material especially in particulate form of refractive index different from that of the binder. The binder dispersion may additionally contain fine particles of material of different refractive index from that of the binder, such as silica, calcium carbonate, barium sulphate or starch. The binder may be gelatin, polyvinyl alcohol, sodium alginate or a cellulose derivative. The micro-capsules may be prepared by a coacervation method, the colloid for forming the walls of the capsules comprising as polycation a water-soluble protein such as gelatin or casein and as polyanion an acid-group containing water-soluble polymer such as gum arabic, dextran sulphate, polyvinyl-sulphonic acid or maleic anhydride copolymer. The material contained in the microcapsules may be polystyrene, polymethyl methacrylate, polybutyl acrylate, PVC, or ethylene-vinyl acetate copolymer, the polymer being dissolved in a volatile organic solvent and supplied to the coacervation system, or may be dibutyl phthalate, tributyl phosphate, octyl alcohol or diphenyl chloride. The microcapsules and binder may be coloured with a pigment or dye.