baber/WOPTO huggingface dataset:
Patent FR-1603530-A (FR)
Title: Insulated heater blade
IPC: H05B3/00
Filed: 1968-11-19
Granted: 1971-05-03
Abstract: Insulated heater blade for cutting/welding plastic sheets by continuous unrolling has a blade carrier of 2 metal parts separated by an insulating part. Two adjustable shafts carry a heating blade and are spring-biassed. An insulating fixing sleeve is on one shaft. Supply cables enable several blades to be mounted in series.
Patent FR-1442912-A (FR)
IPC: H04L9/22
Filed: 1965-08-04
Granted: 1966-06-17
Abstract: A pair of binary counters controlled by identical clock pulses are synchronized by means of a plurality of comparison devices in the form of exclusive OR-circuits having their inputs excited each by a pair of signals derived from corresponding stages of said counters and having their outputs connected to the stage of the respective pair to be maintained in phase synchronism with the other stage of said pair. There is maintained as a result thereof an automatic synchronism between the instantaneous states of the counters after a relatively small number of counting operations following an initial out-of-step condition of the counters. In order to synchronize counters located at widely remote stations, such as a pair of counters serving as basic scrambling and unscrambling pulse generators at the transmitter and receiver of secrecy pulse signal transmission system, the instantaneous states of the transmitting counter are reproduced at the receiver by means of a shift register having an equal number of stages to the stages of said counter and being excited by a time-division control pulse series produced by scanning the stages of the transmitting counter at a frequency at least equal to the clock frequency times the number of counter stages, said control pulse series being transmitted from the transmitting to the receiving station through a suitable synchronizing signal channel. In this case, synchronization is effected between the receiving counter and said register replacing the transmitting counter. By the use of an adequate number of counter stages, repetitive patterns in the final scrambling pulse signal, facilitating deciphering by unauthorized persons, may be increased beyond the average message duration.
Patent GB-1012556-A (GB)
Title: A process for preparing acetic anhydride
IPC: C07C51/235
Filed: 1964-05-20
Abstract: Acetic anhydride is produced by contacting acetaldehyde and a salt of vanadium, manganese, cobalt, nickel, copper or silver in the presence of a mixture of boric acid and oxalic acid with oxygen or an oxygen-containing gas. The mixture of boric and oxalic acids is used in an amount of from 0.1% to 3% by weight of acetaldehyde, the mole ratio of the acids being from 1: 10 to 10: 1.  The reaction temperature may be from 20 DEG  to 80 DEG  C., and the pressure from 1 to 5 kg./cm2.  The metal salt is preferably an acetate or sulphate. Specification 653,942 is referred to.
Patent GB-1051792-A (GB)
IPC: C01D9/00
Abstract: 1,051,792. Strengthening glass articles. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Jan. 14, 1965 [Jan. 17, 1964], No. 1683/65. Heading C1M. An article of glass consisting mainly of sodium and/or lithium aluminosilicate containing at least 5% by weight of aluminium oxide and not more than 20% of other glassforming components is strengthened by surface replacement of sodium and/or lithium ions by potassium ions by contacting the article with a melt consisting of potassium nitrate containing silver ions in such an amount that compared with the replacement by potassium ions there is no appreciable replacement by silver ions, the temperature of the melt being at least 75‹ C. below the annealing temperature of the glass. Reference has been directed by the Comptroller to Specification 917,388.
Patent GB-1053425-A (GB)
IPC: B41J3/50
Abstract: 1,053,425. Typewriters &c. DURA CORPORATION. May 27, 1963 [Oct. 2, 1962], No. 36110/66. Divided out of 1,053,422. Heading B6F. The subject-matter of this Specification is identical with that of Specification 1,053,423, but the claims differ.
Patent GB-1084291-A (GB)
IPC: G01D15/24
Abstract: 1,084,291. Transistor switching circuits. MINNESOTA MINING & MANUFACTURING CO. March 24, 1965, No. 12529/65. Heading H3T. [Also in Division G3] In a retroactive speed control system for the capstan motor of a magnetic tape machine, phase comparison is made between pulses representing tape speed and wide pulses from a reference oscillator, comparison being effected by arranging for the wide pulses to generate a sawtooth waveform and the narrow pulses to interrupt the downward slope of this, the amplitude at which this occurs thus being a measure of the phase difference. During recording, the reference pulses are recorded with the signal, the tape speed pulses being generated by a tachometer (12, Fig. 1, not shown) comprising photo-cell and optical grating coupled to the capstan motor (2). During playback, tape speed signals are preferably taken from the tape, but an electronic circuit (18) automatically switches to the tachometer in the event of a " drop out." The tachometer and tape signal outputs are sinusoidal A.C., which are squared in a limiter (42) and converted to 2 Á sec. pulses (at 48). The reference oscillator (58) produces a square wave which is converted to sine wave for recording, but is also formed into 5 Á sec. pulses (at 68). These are caused to discharge a capacitor (204) in a " bootstrap " transistor circuit (Fig. 4, not shown), but during the discharge the 2 Á sec. actual speed pulse (from 48) applies current in the charging direction to cause a " plateau " on the downward slope of the sawtooth wave. The magnitude of the plateau is detected (at 52) and, after amplification, drives the motor (2). Frequency dividers (44 and 60) provide for a range of tape speeds. For starting, a separate circuit (Fig. 5, not shown) provides a steadily increasing voltage as a capacitor (312) charges, until near running speed is reached, when a Zener diode (314) disconnects this circuit. The automatic switching circuit 18 comprises a Schmitt trigger which causes one or the other of two diode circuits to conduct and thus pass either the signal from the tachometer (12) or the tape (8). The tape signal is passed through a comb filter having peaks at frequencies corresponding to various tape speeds, and these peaks trip the Schmitt trigger to pass the tape signals. In the event of a " drop out " the trigger switches pass the tacho signals; changeover is hastened by an amplitude detector (22) and differentiator (32) connected to a second input on the trigger.
Patent GB-1133650-A (GB)
Abstract: 1,133,650. Reactive dyeing. FARBWERKE HOECHST A.G. 30 Dec., 1966 [31 Dec., 1965], No. 58365/66. Heading DIB. Cellulosic materials and cellulose/polyester mixtures are dyed with reactive and mixtures of reactive and disperse dyes respectively. The dyeing is effected at above 95‹C in the presence of an alkali metal polyphosphate and an alkaline reacting agent. Examples of polyphosphates are sodium tripolyphosphate, sodium tetrapolyphosphate, sodium octapolyphosphate and corresponding potassium compounds. Preferably the dyeing is effected at 100-140‹C, the pH of the bath being 9-11.5 at the start reducing to below 8.5 as dyeing proceeds, due to hydrolysis of the polyphosphates.
Patent GB-1225980-A (GB)
IPC: G03G9/10
Filed: 1968-04-16
Abstract: 1,225,980. Powder developer. RANK XEROX Ltd. April 16, 1968 [April 17, 1967], No. 17877/68. Heading G2H. An electrostatographic developer mixture comprises toner particles and carrier beads comprising a homogeneous glass composition comprising (i) 10-40 % SiO 2  (ii) 4-50 % BaO and (iii) 15-40 % TiO 2 . Other oxides which may be present are ZrO 2 , up to 5% alkali metal oxide, PbO, B 2 O 3  and CaO. The toners specified include pigmented gum copal, gum sandurac, rosin coumarone indene resin, asphaltum, uintate, phenol formaldehyde resin which may be rosin modified, methacrylic resin, polystyrene, polypropylene, epoxy resin and polythylene and a mixture of carbon black, styrene-n-butyl methacrylate copolymer and polyvinyl butyral.
Patent GB-1226259-A (GB)
IPC: B01J19/32
Filed: 1969-05-29
Abstract: 1,226,259. Contact heat exchangers. R. PRIESTLEY. 29 May, 1969, No. 27218/69. Heading F4K. A packing sheet for use in gas/liquid contact apparatus comprises a single sheet of thermoplastic material having three distinct sections A, B, C; section A being a corrugated sheet portion 15, section B comprises flat edge portions 11 spaced alternately on opposite sides of the medial plane of the sheet and parallel thereto, and section C comprises planar connecting parts 13 interconnecting the planar portions 11 on the corrugating portions 15. The portion A in the arrangement shown is profiled similarly to that described in Specification 1,158,766 with the addition of projections 19 which, when a plurality of the sheets are stacked in abutment one with another, can be pinned together by any suitable means. The surfaces of the portions 12, 13 and 14 may be provided with patterned surfaces, e.g. by channelling, honeycombing or dimpling.
Patent GB-1227682-A (GB)
IPC: B65D1/36
Filed: 1969-02-18
Abstract: 1,227,682. Flexible unjointed hinges. BRAUN A.G. 18 Feb., 1969 [20 Feb., 1968], No. 8850/69. Heading E2F. [Also in Division A4] The hinge between the lid and the bottom part of a meal tray consists of an adhesive strip or of a plastics strip inset during the fabrication of the lid and the bottom part. Alternatively in an embodiment wherein the lid and the bottom part are formed in one piece the hinge is formed by folding along the junction between the bottom part and the lid.
Patent GB-1230370-A (GB)
IPC: B29C33/00
Filed: 1969-11-14
Abstract: 1,230,370. Treating mould to release polyurethane foam. GENERAL TIRE & RUBBER CO. 14 Nov., 1969 [15 Nov., 1968], No. 55910/69. Heading B5A. In the production of foamed, flexible polyurethane articles with an integral skin, the mould is treated by (a) applying a smooth coating of polytetrafluoroethylene, (b) fusing the coating, (c) spreading a thin film of a mixture comprising (by weight) 89-99% organic solvent, 3À0-0À3% surfactant and 8À0- 0À7% wax over the coating, and (d) drying the film prior to injecting the foam reactants into the mould. The mould may be made of metal, plastic or rubber and is cooled to form the skin on the foam. The organic solvent preferably comprises naphtha, the surfactant is preferably an organometallic sulphosuccinate and the wax may be an ester of a monohydric alcohol, polyethylene wax, or a hydrocarbon wax with a melting point between 190‹ and 210‹ F. and zero acid number and saponification number. After removal from the mould the foamed article may be rinsed with hot water to remove wax, or painted with an isocyanate based paint.
Patent GB-1231808-A (GB)
IPC: B65G21/14
Filed: 1967-12-02
Abstract: 1,231,808. Mobile agricultural endless chain elevators. BLACKSTONE & CO. Ltd. 26 Nov., 1968 [2 Dec., 1967], No. 54945/67. Heading B8A. An elevator for root crops &c. has an upper section 11, the inclination of which is adjustable relative to the main portion 10, there being mechanism to compensate, during such adjustment, for the change in length of the conveyer chains. The inclination of the portion 11 is adjusted by a handle 43 which acts via linkage 49 and 56. The sprocket shaft 61 at the outer end of the conveyer portion 11 is movable relative to the conveyer frame in slotted members 62 under the control of a rod 63. The latter is rigid with the shaft 61 at one end and is pivoted at 64 to the frame of the conveyer portion 10. The offset between the pivots 12 and 64 causes a translation of the shaft 61 when the relative inclination of the conveyer portions 10, 11 varies. This compensates for the relative inclination tending to cause a change in the length of the conveyer chains. A spring 65 compensates for the weight of the conveyer portion 11. The inclination of the conveyer portion 10 may be adjusted by a jack 24. The conveyer is driven by an I.C. engine 31 operating through chain drives 32, 132.
Patent GB-1238560-A (GB)
IPC: C03C3/064
Filed: 1969-10-02
Abstract: 1,238,560. Glass. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 2 Oct., 1969 [2 Oct., 1968], No. 48539/69. Heading C1M. Glass consists essentially of Li 2 O, B 2 O 3  and V 2 O 5  and optionally CaO and SiO 2 , and has a composition in weight per cent which satisfies the following conditions: and The glass may be prepared by fusing the oxides, or compounds which give the oxides on heating, in an oxidizing atmosphere. Tubes of diameter 7-7À5 mm. may be drawn from the glass and coated on their outer surfaces with an enamel of composition (weight per cent) PbO 77.1, SiO 2  1À5. ZnO 2À0, Al 2 O 3  5.5, B 2 O 3  13.4, CoO 0.5. The tubes may be drawn to 1 mm. diameter, bundled, and drawn again to 1 mm., so that each monofibre had a diameter of 15 Á. The bundles are then heated to fuse the enamel so that the enamel fills the interstices. The hollow fibres are then filled with wax, cut into 2 mm. thick discs, treated with ethanol to remove the wax, and coated with metal on the end surfaces so as to form secondary emission electrodes.
Patent GB-1238603-A (GB)
IPC: H01M8/24
Filed: 1969-10-31
Abstract: 1,238,603. Fuel cell construction. SIEMENS A.G. 31 Oct., 1969 [2 Nov., 1968], No. 53614/69. Heading H1B. An electrolyte chamber for a fuel cell is defined by two ion-permeable plates 5, which are gas-tight when impregnated with electrolyte, and a metal frame 2, situated between the plates and provided with electrolyte supply and discharge ducts 3 and 4, the chamber being filled with porous material 1. The plates may be of asbestos paper water-proofed at their edges where they contact the frame. The frame may be of nickel or stainless steel sheet 0À15-0À35 mm. thick and the porous filler nickel gauze. Ducts 3 and 4 may be hollow straps elongated perpendicular to the plane of the paper. Electrodes 6 and 7 may comprise pulverized catalytic material held in place by a gauze or perforated plate. 8 and 9 represent corrugated current collectors. Electrode frames 10 and 11 may be resilient. The cell may be run at 150-300 C. on H 2  and O 2 . Fig. 3 (not shown) shows a battery of cells comprising alternate electrode assemblies according to the invention and metal electrode frames containing a partition so that they define two gas chambers. The partition may be corrugated so that it touches both electrodes. The reactants and electrolyte may pass through the battery of cells in parallel.
Patent GB-1238629-A (GB)
IPC: C25D5/18
Filed: 1970-03-09
Abstract: 1,238,629. Electro-depositing nickel-ion alloy films. NATIONAL CASH REGISTER CO. March 9, 1970 [March 24, 1969], No. 11066/70. Heading C7B. [Also in Division H2] A thin film of Ni-Fe alloy, e.g. for an anisotropic magnetic data storage device, is electroplated on to a substrate from an electrolyte including ions of Ni and Fe through which a capacitor is discharged at least initially, e.g. supplying first a relatively large plating current and then a constant current (when the capacitor has discharged to a predetermined level) to provide a homogeneous film. A plating solution is specified comprising 218 g/l NiCl 2  6H 2 O, 40 g/l H 3 BO 3 , 3À5 g/l FeCl 3 , 1À5 g/l Na saccharin and 1À75 g/l Na 3  naphthalene 1, 3, 6-trisulphonate. A permanent magnet may be positioned around the plating cell to provide an orienting magnetic field. The capacitor supplying the exponentially-decreasing plating current (allowing the C.D. to decrease from 50 to 5 m A/cm<SP>2</SP> in 4 or 5 seconds) may be charged to the voltage of a variable power supply and then discharged through the plating cell using a circuit comprising gang-coupled switches.
Patent GB-1253177-A (GB)
IPC: G06E1/04
Filed: 1970-09-28
Abstract: 1,253,177. Transistor logic and bi-stable circuits. INTERNATIONAL BUSINESS MACHINES CORP. 28 Sept., 1970 [16 Oct., 1969], No. 46015/70. Heading H3T. [Also in Divisions G1 and G4] Fig. 6 shows a bi-stable trigger with input at 60a, output at 68, and light-sensitive devices 63, 69, 66 light shone on to which respectively resets the trigger, sets it, and enables the output, by lowering the impedance. Figs. 3, 4, 5 (not shown) respectively show a diode AND gate, a diode OR gate, and a transistor emitter-followercoupled driver circuit, each including a lightsensitive-device, light shone on which lowers the impedance to permit an output to appear. The light comes from a hologram array illuminated by a scan laser, the circuits being used in a computer (see Divisions G4-G6).
Patent GB-1256495-A (GB)
IPC: B23K15/06
Filed: 1968-04-26
Abstract: 1,256,495. Welding by fusion. VICKERS Ltd. 24 March, 1969 [26 April, 1968], No. 20034/68. Heading B3R. [Also in Division H1] -In electron beam welding, the workpiece in a vacuumis separated from the ambient atmosphere by being enclosed in a metal box 1 the top wall 3 of which comprises a sealed access accommodating operation upon 'the workpiece by an external electron gun 21, said access being movable in any direction across the wall. Said sealed and movable access is provided by a first circular cover plate 6 rotatable about the axis of, and sealed to, an-aperture 4 in the wall 3, a second circular cover plate 12 rotatable about the axis of, and sealed to, an aperture 10 in, and eccentrically of, the first cover plate, and a sealing device 18 between the gun and-an access aperture 16 which is aligned with the gun and is provided in, and eccentrically of, the second cover plate. Preferably, the axes 17, 5 of the access aperture and the first cover plate are equidistant from the axis 11 of the second cover plate so that the gun may take up any position within the circle generated by the axis 17 in its outermost position. Thrust -bearings 13, 7 and flexible sealing-rings 15, 9 are provided between the second and the first cover plates and between the first cover plate and the wall. The sealing device 18 comprising flexible sealing rings 19, 20 is provided around the access aperture 16 to receive, with relative rotational freedom, the outlet end of the -gun which latter -may be supported and moved by gantry means (not shown). The gun may, alternatively, be moved by driving thecover plates. Front and side walls of the box are provided respectively with a loading door and an evacuating duct 22.
Patent GB-1256499-A (GB)
IPC: G05F1/45
Filed: 1968-06-14
Abstract: 1,256,499. Automatic control of temperature; torque. DIAMOND H CONTROLS Ltd. May 29, 1969 [June 14, 1968], No.28342/68. Heading G3R. An automatic temperature control system wherein the energy supply to the heating device is controlled by way of an electronic controlled switching element is provided with means whereby the switching element is controlled so that the energy is supplied to the load in alternating cycles which are distributed fairly uniformly with respect to time. A heating device 10 is provided with a heating element 11 supplied from an A.C. supply 15 by way of a switching device 13, such as a TRIAC or a pair of reversely connected thyristors, the temperature of the heating device 10 being measured by a thermocouple device 12. The device 12 transmits a signal to a transducer 16 and thence to a variable frequency pulse generator 18, the frequency of the output pulses being representative of the energy requirement of the heating element 11 to maintain the temperature of the device 10. A second pulse generator 23 provides clock pulses at a frequency of 100 per second which are synchronized with the 50 cycle supply 15 and which are applied to each of three bi-stable elements 20, 21, 22 in a shift register and to an AND gate 25. The pulses from the variable frequency generator 18 are applied to the first bi-stable element 20, a following pulse applied thereto from the clockpulse generator 23 then marking up a shift in the register. A shift in either of the bistable elements 21, 22 provides an output which is applied to the AND gate 25 by way of an OR gate 24. AND gate produces an output pulse each time a clockpulse is applied thereto and this output pulse is used to trigger a TRIAC in the switching device 13 to energize the heating element 11. Thus the cycles of energization are distributed so that the duration of the ON plus the OFF times of the TRIAC is minimized. The feedback device 26 is provided so that alternate pulses leaving the generator 18 are slightly retarded and the remaining pulses advanced by the same interval thus avoiding synchronism of the pulses from the generator 18 with those from the generator 23. (For Figure see next page)
Patent GB-1258342-A (GB)
IPC: G05D3/20
Filed: 1969-02-17
Abstract: 1,258,342. Programmed electric control. SUNSTRAND CORP. Feb.17, 1969 [Feb.19, 1968], No.8563/69. Heading G3N. A control system for one or more machine tools 62 comprises a data processor 60 such as a high speed digital computer which includes a central processing unit CPU and a main storage memory. Data enters and leaves from a number of slow response devices such as a card reader and punch 70, print unit and keyboard 72 through a multiplex channel 1. The main storage is of limited size hence several disk memorys 74 are available through an external memory 75 and selector channel 2. A unit 78 provides bilateral communications on a time shared basis, with an interrupt facility, between selector channel 1 and individual machine control units 80 which comprise units 82 converting information from the data processor 60 into machine language for transmission to the machine tools 62, and an operator console 83 which has a number of display indicators and devices for manually entering information. Each machine has an identifying signal and all normal operations concerned with the running of prepared and stored programmes may be controlled from the consoles 83 which has facilities for tool retraction, re-run, break-in or delete, operator feedrate variation with computer over-ride, also to allow the operator to take over the control of the machine. A control is included so that deviations from the programme can be recorded and the axes of the machine re-zeroed before continuing with a programme. A communications terminal 84 one for each machine, or preferably a portable unit common to several machines provides facilities for recorded operator experiment, which record may be erased after use, or inserted into or in place of a whole or part programme, or such information can be inserted without experiment. The part programmes can also be re-arranged in a different sequence. Terminal 84 may include a typewriter and is linked through a control unit 86 to multiplex channel 1. Computer 60 may log record keeping functions when not performing operations for the machines connecting to it.
Patent GB-1259563-A (GB)
IPC: C07D333/70
Filed: 1969-12-23
Abstract: 1,259,563. Benzothiophenes. FARBENFABRIKEN BAYER A.G. 23 Dec., 1969 [16 Jan., 1969], No. 62527/69. Heading C2C. Novel benzothiophenes of the general formula (wherein Ar is an optionally substituted benzene radical; X is a carboxylic acid ester group, or a cyano, formyl, C 1-6  alkylcarbonyl, benzoyl, C 1-6  alkylsulphonyl, or phenylsulphonyl group; and n is 2 or 3) and related compounds wherein n is 1 can be prepared by reacting an aromatic o-chloroaldehyde with a mercaptomethyl compound HSCH 2 X in the presence of an acidbinding agent, preferably in an inert solvent at a temperature between -20‹ and +180‹ C., particularly from 10-100‹ C. Specified aldehydes include 5-nitro-2-chloro-, 3,5-dinitro-2- chloro-, 2,3,5,6 - tetrachloro-, and pentachloro-benzaldehyde; 4-chloro-, tetrachloro- and 4 - methoxy - 2,5,6 - trichloro - isophthalaldehyde; 2,5-dichloro-, tetrachloro- and 2,5- dichloro - 3,6 - bis - (phenylsulphonyl) - terephthalaldehyde; trichloro- and 2-methoxy-4,6- dichloro-trimesitaldehyde; and specified mercapto compounds include the methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec.-butyl, tert.- butyl esters of thioglycollic acid, mercaptoacetaldehyde, mercapto - acetone, mercaptoacetonitrile, # - mercapto - acetophenones, and mercaptomethyl methyl sulphone. The compounds are useful as light protective agents for synthetic resins.