baber/WOPTO huggingface dataset:
Patent GB-1166293-A (GB)
Title: Apparatus and Method for Controlling Magnetism.
Inventor: LITTWIN ARTHUR KENNETH
IPC: B23Q3/15
Filed: 1966-11-14
Abstract: 1,166,293. Demagnetizing. A. K. LITTWIN. 14 Nov., 1966 [20 Dec., 1965], No.50967/66. Heading H1P. A magnetic chuck consisting of a permanent magnet and an electromagnetic winding is demagnetized in a series of steps during which the D.C. current in the winding is successively reversed in direction and reduced in strength, the current being maintained at a steady value between successive reversals and the steps being initiated by feed-back means responsive to the intensity of magnetization of the chuck. The control circuit, which is described in detail in the Specification, includes a pair of back-to-back SCR's, which supply the current to the chuck winding, the bias on the rectifiers, which determines the strength of the current, being provided by transformers whose output is regulated by a rotary stepping switch adapted to vary the resistance in the transformer circuits. The rotary switch also regulates the reversal of the current direction. The feed-back means includes a further SCR which is rendered non-conducting, to initiate a further step, by the build up of voltage across a control resistor in the chuck winding circuit caused by the build up of magnetism in the chuck. The control circuit is also adapted to magnetize the chuck when it is required to hold a workpiece, to partially demagnetize it by simply reversing the current when it is desired to remove the workpiece for testing purposes, and to vary the level of magnetization attained by the chuck in normal use by introducing a further resistance into the feed-back circuit which also controls the magnetizing operation.
Patent GB-1451055-A (GB)
Title: Refrigerating apparatus
IPC: F25D3/11
Filed: 1973-11-06
Abstract: 1451055 Refrigerating INTEGRAL PROCESS SYSTEMS Inc 6 Nov 1973 [8 March 1973] 51379/73 Heading F4H In apparatus for refrigerating articles, e.g. meat patties, comprising a chamber 11 containing a conveyer 19 and into which a cryogen fluid, e.g. liquid CO 2 , is sprayed through a duct 38 spaced from the entrance 17 of the chamber, spent cryogen fluid is withdrawn from the chamber through a cylinder 53 adjacent the entrance 17 by a motor driven blower, Fig. 1 (not shown), and a flow confining baffle 57 is provided adjacent the entrance 17 to increase the gas velocity adjacent the conveyer and to restrict the withdrawal of the spent gas. The tunnel beneath the conveyer 19 is provided with horizontal plates 61, 62, the plate 62 defining a gas recirculation passage 64 from which gas is withdrawn by a blower and exhausted through the duct 38 where it mixes with the incoming liquid CO 2 . The proportions of gas being withdrawn or recirculated are controlled by the baffle 57, entrance baffles. 80, 81 and valves 72, 73.
Patent GB-1320966-A (GB)
Title: Method of and apparatus for determining colourimetric concentrations
IPC: G01N21/31
Filed: 1970-10-30
Abstract: 1320966 Photo-electric concentration determination A R LINDBERG 30 Oct 1970 [3 Nov 1969] 51742/70 Heading G1A In an arrangement, light absorption by a sample is measured alternately in two different ranges of wavelength one being narrow and falling within the other, and light energy within the ranges in the absence of a sample is trimmed by absorption filters to be equal so that background absorption due for example to turbidity is compensated when the difference between the energies in the two ranges is used to indicate the concentrations. A two sector filter 8, Fig. 1, is rotated in the light path between the sample 3 and a light operated switch 10, 11 actuates relay contacts R L1,  R L2  to apply the alternate photo-cell potentials to capacitors C1 and C2. The difference signal is indicated or recorded at 14, 15 after amplification in 16 and may be linearized to read concentration directly. Resistors R1, R2 provide for adjustment of range and zero.
Patent GB-1484176-A (GB)
Title: Reversible share
IPC: A01B23/02
Filed: 1974-11-29
Abstract: 1484176 Harrow share for spring harrow SKF INDUSTRIAL TRADING & DEVELOPMENT CO BV 29 Nov 1974 [30 Nov 1973] 51774/74 Heading A1B A harrow share for a spring harrow comprises a pair of blades 4 extending in opposite directions from a central portion 2 which may have a boss 3 or a screw for mounting purposes. The blades each have their transverse edge I twisted and inclined relative to the longitudinal axis of the central portion of the share and are bent towards each other. The central portion 2 may be of semi-circular cross-section. The blades are mirror images of each other and when one is worn the other is used after inversion. The share may be of a steel alloy which imparts nutrients to the soil as it wears down. Adjacent rows of shares may be oppositely faced to balance the harrow during use. The blades may be bent towards each other between 30-40 to the central portion axis the angle of twist may be 15 and the angle α between the longer longitudinal edge and a transverse edge may be 40-50.
Patent GB-1399548-A (GB)
Title: Making gas panel displays
IPC: H01J17/49
Filed: 1972-11-10
Abstract: 1399548 Coating glass with glass INTERNATIONAL BUSINESS MACHINES CORP 10 Nov 1972 [30 Dec 1971 (2)] 51959/72 Heading C1M [Also in Division H1] In the formation of a gas display panel, conductors 31 to 40 are located on the flat surface of a glass plate 12, the plate is heated in an atmosphere of gas such as to cause oxidation of the conductor surfaces and a coating 80 of glass is formed on the plate 12 which completely covers the conductors. The gas used was 90% N 2  + 10% H 2  and water vapour. The conductors consist of a first layer of chromium, a second layer of copper and a third layer of chromium. The coating 80 is sprayed on as a finely ground lead glass first in a nitrocellulose polymer binder in a solvent of amyl acetate. Spraying is effected in a halogenated hydrocarbon atmosphere.
Patent GB-1151589-A (GB)
Title: Whisks
Inventor: RAMSHAW JACK
IPC: A47J43/07
Filed: 1966-11-21
Abstract: 1,151,589. Stirrers. KENWOOD MFG. (WOKING) Ltd. 20 Oct., 1967 [21 Nov., 1966], No. 52034/66. Heading B1C. A whisk for a food mixer or for use in the hand comprises at least four components of wire tubing or strip each bent back on itself to form elements as 7a, 7b, &c., each element is secured to a support at its free end (see Fig. 1, not 'shown) and at the other ends of the elements the components are interlinked to form a braced cage. The components may have oppositely directed arcuate portions 7c, 8c, 9c, 10c at the point of interlinkage.
Patent GB-1107440-A (GB)
Title: Polybenzimidazoles and their preparation
IPC: C08G73/18
Filed: 1965-12-08
Abstract: Polybenzimidazoles consisting of recurring units of the formula <FORM:1107440/C3/1> wherein the pyridyl radical is connected to the imidazole linkage either at the 2 or 3 position are prepared by heating 3,31,4,41-tetramino-diphenylmethane with a diester of the formula <FORM:1107440/C3/2> or a mixture thereof, where R is phenyl or phenyl-phenyl in the absence of oxygen at 160 DEG  C. to 230 DEG C. to form a prepolymer, and heating the prepolymer at 260 DEG  C. to 320 DEG  C. until the polybenzimidazole is formed.  More preferably the prepolymer is comminuted and then heated to a temperature between 260 DEG  C. and 320 DEG  C. until the polymer formed has a reduced viscosity of at least 0.5 H/g. as determined on a solution of 0.5 g. of polymer in 100 millilitres of 90% formic acid at 25 DEG  C..  The prepolymer may be heated in the presence of an inert solvent such as N-methyl pyrrolidone, silicone oil or a eutectic mixture of diphenyl and diphenyl oxide.  The polybenzimidazoles can be spun into filaments or used to form films using dimethylsulphoxide or N,N-dimethylformamide as solvents.  Reference has been directed by the Comptroller to Specification 1,003,291.ALSO:3,31,4,41 - Tetramino - diphenyl methane may be prepared by reacting ortho-nitroaniline with formaldehyde to give methylene bis-(orthonitroaniline) which is stirred with concentrated hydrochloric acid and hydrogen chloride gas is bubbled therethrough to produce bis-(4-amino-3-nitrophenyl)methane which is reacted with tin and hydrochloric acid to give the desired tetramine.  The phenol ester of pyridine-2,5-dicarboxylic acid is prepared by reacting pyridine-2,5-dicarboxylic acid with thionyl chloride to give the diacid chloride which is then reacted with phenol.  Reference has been directed by the Comptroller to Specification 1,003,291.
Patent GB-1370654-A (GB)
Title: Keyboard with roll-over feature
IPC: H04L25/40
Filed: 1971-11-11
Abstract: 1370654 Keyboards PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 11 Nov 1971 [14 Nov 1970] 52407/71 Heading G4H A keyboard enters data into a store, keyentered data being compared with previous key-entered data in the store, to permit output from the store in the event of non-correspondence. The invention deals with the roll-over problem. In a first embodiment, the keys are repeatedly interrogated in turn. The identity of an actuated key is encoded and inserted into a first register, and the contents of this register are compared in parallel with those of second, third and fourth registers. The registers are shifted so that the contents of the first to third registers are transferred into the second to fourth registers respectively. If none of the comparisons showed equality, the contents of the first register are also gated to an output (to a computer) during the shifting. The last key is a rest key, the identity of which is encoded, &c. as above, if no other key is actuated in the current interrogation cycle. If a key is actuated too soon after the previous key, the interrogation is stopped or output to the computer is blocked, and an error display indicator is actuated. The interrogation may be slowed while an actuated key is being processed. A second embodiment differs in that there are 14 data keys and 2 rest keys arranged in a matrix and interrogated by rows and columns in response to detection of key-actuation which causes production of (16-n) interrogation clock pulses plus a reset pulse, where n is the number of currently-actuated keys, release of keys also being detected so that n is known (so that a rest key is not always reached in the interrogation). Comparison is serial-by-bit with recirculation of the registers (of which there are three), and gating out to the computer is parallel by bit. A bi-stable reset on detection of key-actuation, and set on gate-out to the computer, prevents such gateout when set so that only one key-identity can be passed to the computer per interrogation cycle, with the result that each key-actuation results in only one input to the computer. An error signal is produced if three keys are in the actuated state together. If a key is actuated while the (16-n) pulses mentioned are being produced in response to a previous key, interrogation stops and an error signal is displayed. A third embodiment differs from the first in having no rest key, interrogation commencing in response to each actuation or release of a key, the number of depressed keys controlling the distance along the sequence of registers that the key-identity is shifted, the contents of the first register being also retained by recirculation. Only one keyidentity can be passed to the computer per interrogation cycle.
Patent GB-1195770-A (GB)
Title: Machine for Making a Spiral Groove on Resistor Blanks
Inventor: EGOROV GEORGY FEDOROVICH
IPC: B24B19/02
Filed: 1968-11-06
Abstract: 1,195,770. Grinding. G. F. EGOROV, I. R. ZATSMAN, I. N. NIKOLAEV, and P. P. LAPTEV. 6 Nov., 1968, No. 52508/68. Heading B3D. Apparatus for making a spiral groove on a resistor blank 1 by means of a grinding wheel 2 comprises a spindle 4 and coaxially located chuck 5 for pressing the blank to the spindle mounted together on a carriage 3, a rod 6 on which the carriage is mounted and which is movable about its own axis and parallel to its axis which is parallel to that of the chuck, and kinematic chains connecting the rod to a programming mechanism 9. The carriage 3 carrying the spindle 4 and chuck 5 is secured to the rod 6 which is rotatable and axially slidable in supports 7, 8. The chuck is axially movable and the carriage reciprocated and oscillated by the under the control of the programming mechanism 9 which consists of cams 11, 12, 13 mounted on a shaft 10. Cam 11 co-operates with a lever 14 to effect axial movement of rod 6 and hence carriage 3. Cam 12 co-operates with a lever 18 engaging a roller 22 to effect swinging of the carriage about the axis of rod 6, and cam 13 co-operates with a lever 24 which actuates a further lever 28 to cause the chuck to move towards or away from spindle 5. In operation, a blank 1 is fed manually or automatically to the spindle 4 and lever 24 is actuated so that the chuck holds the blank. Cam 12 operates lever 18 so that a spring 23 rocks the carriage towards the grinding wheel and cam 11 actuates lever 14 to cause axial movement of the carriage and blank which is ground until it reaches a predetermined resistance whereupon the cams are operated to withdraw and release the blank.
Patent GB-1125100-A (GB)
Title: Improvements in electrical generators, more particularly for delivering electrical energy in pulse form
Inventor: TOROSSIAN ANTOINE
IPC: H03K3/02
Filed: 1966-11-25
Abstract: 1,125,100. Electricity supply systems; short circuited windings on alternators. COMMISSARIAT A L'ENERGIE ATOMIQUE. 25 Nov., 1966 [26 Nov., 1965], No. 52771/66. Headings H2A and H2H. A system for producing a unindirectional pulse in a load so as to produce an intense magnetic field of short duration comprises an alternating current generator having characteristics so related to the load that, when the generator is connected to the load, it is brought substantially to rest within a half cycle of the alternating voltage produced by the generator. If desired, the generator may be short circuited at the end of the half cycle to dissipate any residual energy then remaining. Where the generator is of the asynchronous type the rotor may be of solid steel covered with a cylinder of copper having a length equal to that of the coils on the stator. In the case of a synchronous generator the rotor may comprise a squirrel cage under which is placed a wound exciting winding.
Patent GB-1240475-A (GB)
Title: Improvements in or relating to heat exchangers
Inventor: FOX JOHN ROLAND
IPC: B21D53/02
Filed: 1967-11-23
Abstract: 1,240,475. Making heat exchangers. ASSOCIATED ENG. Ltd. 21 Nov., 1968 [23 Nov., 1967], No. 63439/67. Heading B3A. [Also in Division F4] A method of making a finned heat exchanger member comprises extruding a metal tube formed with fins projecting from either an internal or an external surface thereof, axially splitting the tube into at least two sections, removing the curvature from each of the sections and forming and joining two such sections so as to define a tubular passage therebetween. An aluminium tube 1 is extruded with fins 2 and regions 3 having no fins. Alternatively corresponding regions may be cleared of fins at a later stage if no fin free regions are originally provided. The extruded tube is cropped into rings, the axial length of which corresponds to the width w of the passages to be formed. The rings are than split along line A-A, flattened and then the fin free edges formed into flanges 4a. Apertured bosses 5 may be pressed into the end flanges which are bonded together by welding or by an adhesive. A number of passageways are stacked and joined together at the bosses 5 to form a radiator core either by welding or by bolts, with sealing rings being provided if necessary. In an alternative construction the ends of the tubular passageways are located in apertures in tube plates forming parts of end tanks.
Patent GB-1421475-A (GB)
Title: Process for treating aqueous wastes containing water-soluble  organic materials
IPC: C02F11/08
Filed: 1973-11-19
Abstract: 1421475 Purifying water TEXACO DEVELOPMENT CORP 19 Nov 1973 53597/73 Heading C1C An aqueous waste feed stream containing essentially water-soluble organic wastes is treated by continuously passing said stream into and through at least one heated zone, injecting an oxygen-containing gas into said stream so that non-catalytic oxidation occurs in the zone at 400-700‹ F., 300-3100 p.s.i. under turbulent flow conditions characterized by a Reynolds number greater than 2000 the residence time in the zone being 0À1 minute-2 hours, whereby the organic wastes are oxidized to CO 2  and H 2 O. Specified waste feed streams are those from oil refineries and lubrcating oil additive manufacture.
Patent GB-1414240-A (GB)
Title: Mislanding corrector for colour television cathode ray tubes
IPC: H01J29/70
Filed: 1973-11-19
Abstract: 1414240 Colour television tubes; permanent magnets SONY CORP 19 Nov 1973 [20 Nov 1972] 53654/73 Headings H1D and H1P A magnetic structure, for correcting mislanding of electron beams in cathode-ray tubes for colour television, comprises a strap of high magnetic permeability, material, and a pair of temperature responsive magnetic flux generating means to produce magnetic fields which increase in intensity as the temperature increases, one of the flux generating means being attached to each end of the strap. Where a mask is provided in a cathode-ray tube for colour television, impingement of electrons on the mask heats it and causes expansion, and beam mislanding. Figs. 1, 2 show a device 11 comprising a permanent magnet 12 received in a recess in a magnetic shunt 13. Magnet 12 is a ferrite disc magnetized diametrically. Shunt 13 is also of ferrite, such that its magnetic permeability falls with rise in temperature. Thus, more of the flux from the magnet is shunted at low temperatures, so that the external field is low at low temperatures and high at high temperatures. As shown in Fig. 1, the magnet 12 and shunt 13 are both formed as discs flattened on one side; they may also have rectangular or polygonal shapes. As shown in Fig. 5, a structure 17 comprises two devices 11a, 11b which are mounted one at each end of a strap 18 made of material having a high magnetic permeability, e.g. silicon steel or Permalloy. The devices 11a, 11b overlap the ends of the strap 18, and are oriented with their N-S axes aligned and in the same sense. The magnetic field of the structure 17 is as shown in dotted lines, and may be modified, particularly near the ends of the structure, by varying the degree of overlap of the devices 11a, 11b. As shown in Fig. 9, two structures 17, 17a are mounted on the outside of the envelope of a cathode-ray tube 21 and respond to heat generated by the mask when electrons impinge on it. The consequent change in flux deflects the electron beam to correct for the effect of expansion of the mask.
Patent GB-1287299-A (GB)
Title: Method of producing non-woven products and non-woven products produced thereby
Inventor: MILLER PAUL EMERY
IPC: D04H11/00
Filed: 1969-11-03
Abstract: 1287299 Carpets THERMO WEAVE Inc 3 Nov 1969 [18 Nov 1968] 53838/69 Heading A4S [Also in Divisions D1 B5] A non-woven product, e.g. rug, mat, or tile, is produced by freezing a moistened stack C of layers of sheet material from which are cut off slabs D having ribbon-like elements E extending along their length, at least one face of the slabs being bonded to a backing element F. The sheet material may be plastics, leather or textile fabric and may be scrap material from which shapes have been cut out, resulting in the ribbonlike elements in the slabs D having irregular edges. The frozen slabs D are passed through a defreezer 17 before bonding to the backing F and may be cut into tiles T, Fig. 2. A further slicer 19, Fig. 1, may subdivide the elements E to produce tiles (T2), Fig. 4 (not shown) with upstanding teeth-like elements. For heat insulating tiles, a backing F, Fig. 6 (not shown), is bonded to both sides of the element. The backing F may be plastics material extruded directly from an extruding head on to the elements D. The ribbon-like elements E may be spaced apart by a slurry of lint or pulp between the sheets in the stack C, the slabs D being only partly defrozen before bonding to the backing and unbonded lint or pulp being finally removed from between the elements E by suction. If water-soluble adhesives are used for the bonding; the slabs need not be defrozen before bonding.
Patent GB-541138-A (GB)
Abstract: 541,138. Esters of naphtho-hydroquinones. HOFFMAN-LA ROCHE & CO. AKT.-GES., F. Sept. 27, 1940, Nos. 14635 and 14636. Convention dates, Oct. 24, 1939 and May 24, 1940. [Class 2 (iii)] Alkyl-1 : 4-naphthohydroquinones are converted into their acid succinic acid esters by treatment with succinic acid anhydride. The products are soluble in aqueous alkali and possess the activity of vitamin K. Examples are given of the conversion of 2-methyl- and 2: 3-dimethyl-1 : 4-dioxynaphthalenes into their acid esters of succinic acid, either by fusion or heat treatment in pyridine solution with succinic anhydride. The Specification as open to inspection under Sect. 91 also refers to the treatment with the anhydrides of di-basic acids in general. This subject-matter does not appear in the Specification as accepted.
Patent GB-1178259-A (GB)
Title: Improvements in or relating to Support for a Patient.
IPC: A61G7/002
Filed: 1967-11-30
Abstract: 1,178,259. Adjustable bedsteads. "SOCHIBO" SOC. DE PRODUITS CHIMIQUES DE BOULOGNE-SUR-SEINE. 30 Nov., 1967 [6 Feb., 1967], No. 54575/67. Heading A4J. A rectangular bed frame B is mounted for longitudinal or transverse tilting, on a stand A, by a universal joint at each of the corners. The joints are each held together by a retractable slide 15, which, when withdrawn outwardly, enables the cruciform journal member (11), 13 to be lifted off the bearing members 14, for the journals 13. Any adjacent pair of slides 15 may be withdrawn so that, on operating pump 18 to deliver liquid to ram V, the central thrust, delivered through toggle links 21, 22, 31 and 32, tilts the frame B about the opposite pair of joints. The links 21, 22, 31 and 32 are connected to universal joints 23, 28, 33 and 34. A form in which the frame B supports a dentist's chair and the ram V can be replaced by a screw mechanism, is referred to.
Patent GB-1280754-A (GB)
Title: Thioamides of 4-substituted syringic acid
Inventor: PIFFERI GIORGIO
IPC: C07D295/194
Filed: 1970-11-18
Abstract: 1280754 Syringic acid derivatives ISF SpA 18 Nov 1970 [31 July 1970] 54809/70 Heading C2C Novel compounds I where R is Me, Et, MeCO or EtO.CO and the N-containing group is the residue of a saturated cyclic secondary amine having 4 to 7 ring atoms and where X is CH 2 , O, S or NH, are made: (a) by reacting the appropriate syringic aldehyde and secondary heterocyclic base in the presence of sulphur; (b) by treating corresponding carbonyl compounds with phosphorus pentasulphide; and (c) by condensing the appropriate thiobenzoyl chloride and secondary amine. Pharmaceutical preparations having CNS activity contain I as active ingredient; administration may be orally or parenterally.
Patent GB-1347159-A (GB)
Title: Circular knitting machines
IPC: D04B15/00
Filed: 1971-11-25
Abstract: 1347159 Knitting machines ELITEX-ZAVODY TEXTILNIHO STROJIRENSTVI GENERALNI REDITELSTVI 25 Nov 1971 [7 Dec 1970] 54888/71 Heading D1C An e.g. small diameter knitting machine for knit-de-knit processing comprises a sinker guide ring 4 and a sinker ring 14 with a sinker cam ring 15, either ring 4 or ring 14 or both having a conical surface to engage and guide the sinkers 11 to give them an inclined linear movement. Ring 4 has ribs 5 and a conical surface 6 higher than the bottom 7 of recesses 8 between ribs 5 so that the guiding edges 11 of the sinkers bear against surface 6. A groove 12 in ring 4 on the same show as surface 6 receives nose 13 of the sinker to hold it in position. In ring 14 the butts 16 of sinkers 10 are held between ribs 17 by sinker cam ring 15. A conical surface 18 on ring 14 is higher than the bottom 19 of recesses 20 between ribs 17 and forms a continuation of surface 6. The sinkers are held against surfaces 6, 18 by spring 22. One conical surface only may be provided on one of the rings 14 or 4 Fig. 3 (not shown).