baber/WOPTO huggingface dataset:
Patent GB-1298684-A (GB)
Title: Electric motor control
Inventor: MCBRIDE LYLE R JR
IPC: H02H5/04
Filed: 1969-12-12
Abstract: 1298684 Control of AC motors; protective arrangements TEXAS INSTRUMENTS Inc 12 Dec 1969 [30 Dec 1968] 60693/69 Headings H2J and H2K When leads L1, L2 are connected to an A.C. source, triac Q1 is triggered through capacitor C1 and P.T.C. thermistor S1 whereby starting winding AW is energized. Triac Q2 is triggered through capacitor C2 and thermistor S2 so that main winding MW is also energized. The voltage across winding AW is applied to heater H associated with the thermistor S1 After a predetermined period, thermistor S1 reaches a threshold temperature at which it reduces the triggering current for the triac Q1 which becomes non-conductive to disconnect the winding AW from the A.C. source. A voltage is induced in the starting winding from the main winding to maintain energization of the heater H, and to keep the triac Q2 in the conductive state. If the motor becomes over-heated, thermistor S2 responds to render the triac Q2 non-conductive so disconnecting the winding MW. The motor cannot be re-started until the heater H has cooled. The heater H may be formed of P.T.C. material having a marked transition temperature above which its resistance increases abruptly. A third thermistor may be connected in series with the thermistor S2 and thermally coupled to the main winding to provide additional protection, Fig. 2 (not shown). A thermistor in series with the thermistor S1 and coupled to the heater H prevents starting of the motor when it is over-heated, Fig. 3 (not shown). A capacitor across the winding AW provides additional triggering current for the triac Q2, Fig. 4 (not shown). In a further embodiment, the motor has a pair of capacitors which are initially connected in series with the starting winding. After a predetermined period, a triac becomes non- conductive to disconnect one of the capacitors, Fig. 5 (not shown).
Patent GB-1341045-A (GB)
Title: Synthesis of aliphatic amino and/or carboxy compounds
IPC: C07C229/06
Filed: 1970-12-22
Abstract: 1341045 Pseudo-nitrosites; nitro-ketoximes; nitroketones; furoxanes; diamines; aminoacids; diacids SOC NATIONALE DES PETROLES D'AQUITAINE 22 Dec 1970 [24 Dec 1969] 60871/70 Heading C2C Aliphatic diamines, amino-carboxylic acids and dicarboxylic acids are prepared by reacting a cycloaliphatic hydrocarbon having one or more double bonds and 8 to 32 carbon atoms in the ring with a nitrogen oxide, in a liquid medium in which the hydrocarbon is soluble and from which the product 1-nitro-2-nitroso cycloaliphatic compound (pseudo-nitrosite) precipitates (as dimer) as it is formed and is removed before the conversion, based on the weight of hydrocarbon, exceeds 64%; isomerizing the pseudo-nitrosite to the cyclic 1-nitroketoxime by heating in a polar solvent at 80-160 C.; treating the nitro-ketoxime with a dehydrating acid, e.g. H 2 SO 4 , H 3 PO 4  or a polyphosphoric acid, to form the corresponding furoxane, and reducing the latter to yield an aliphatic diamine; or treating the 1-nitroketoxime with a strong non-oxidizing non- dehydrating aqueous acid, e.g. HCl, to give the 2-nitro cyclic ketone, and hydrolysing the latter either with an acid solution to give a dicarboxylic acid, or with an alkaline solution followed by acidification to give the #-nitro carboxylic acid and reducing this to the aminoacid. Examples start with cyclododecene to yield finally 1,12-diaminododecane, and 12- aminododecanoic acid; and cyclooctene to yield finally 1,8-diaminooctane, 8-aminocaprylic acid and suberic acid. Other specified starting materials are cyclooctadiene, cyclododecadiene and cyclododecatriene.
Patent GB-1194949-A (GB)
Title: Method of Temperature Compensating Oscillation Circuit for Timepiece and Device Therefor
IPC: G04C11/08
Filed: 1968-12-23
Abstract: 1,194,949. Oscillator circuits. CITIZEN WATCH CO. Ltd. 23 Dec., 1968 [31 Jan., 1968], No. 61133/68. Heading H3T. [Also in Divisions G3 and H1] An oscillator for a timepiece is temperature compensated by continuously switching an impedance coupled to it between two different values, the ratio of dwelling time at these values being a function of ambient temperature, so that the average frequency is independent of temperature. In a crystal oscillator a capacitor C2, Fig. 6a, may be connected in series with the crystal and an axuiliary capacitor #C connected in parallel with the capacitor C2 by means of a switch SW. The Specification describes alternative arrangements using switched capacitors (Figs. 6b-6d, not shown) and an arrangement for a tuning fork controlled oscillator (Fig. 20, not shown). The switch may comprise a drum 3, Fig. 8a, driven e.g. by the clock mechanism 6 and carrying a suitablyshaped contact area 5, the contact arm 2 being attached to a bi-metallic strip 1. The Specification describes alternative forms of switches (Figs. 8c-15, not shown see Division H1). Alternatively a transistor 24, Fig. 16a, may be used to switch a capacitor 23 into circuit, its base being driven with an A.C. waveform from generator 21, in conjunction with a temperature-varied bias from generator 22 which determines the portion of each cycle for which the transistor is conductive (Fig. 16c, not shown). Alternatively the transistor may be switched between its conductive and non- conductive states by means of a bi-stable circuit which is driven from a mechanical switch (Figs. 17, 18, not shown). In a further embodiment the transistor is biased through a photodiode (Fig. 19b, not shown); the photodiode housing 32, Fig. 19a, is attached, together with a lamp 31 to a member which is moved under control of a bi-metallic strip 1 to vary the degree of interruption produced by a camshaped driven member 3.
Patent GB-1271149-A (GB)
Title: Lithographic printing press
Inventor: SEJECK ARTHUR W
IPC: B41F7/26
Filed: 1969-12-22
Abstract: 1,271,149. Dampening apparatus. ADDRESSOGRAPH MULTIGRAPH CORP. 22 Dec., 1969 [24 Dec., 1968], No. 62476/69. Heading B6C. A rotary lithographic printing press has alternative dampening systems, one of which is brought into operation when a new printing plate is applied to plate cylinder 11 and the other of which operates to dampen the plate during printing. When a new plate is fed to plate cylinder 11, a roller 33 is brought into contact with the plate, and has a scrubbing action on it. Downward pivoting of main frame 13, so that a forme roller 14 of the dampening system operative during printing is caused to contact the plate, and moves subframe 30 to remove the roller 33, is preferably controlled by a timing circuit.
Patent GB-683365-A (GB)
Abstract: 683,365. Electromagnetic relays. IGRANIC ELECTRIC CO., Ltd. April 27, 1951 [May 12, 1950], No. 9921/51. Class 38 (v) A timing relay operable by D.C. or rectified A.C. has two windings 14, 18 which act in opposite directions on an armature 12 biased to the open position, the operating winding 14 being connected in series with a capacitor 17 across a D.C. source and the capacitor being short-circuited by the restraining winding 18 when a switch 20 is closed to effect actuation of the relay. In the normal position shown the capacitor 17 is fully charged, a feature of special importance when the capacitor is of the electrolytic type. When the switch 20 is closed, a current flows through the winding 18, the current being of maximum intensity to start with and then diminishing. Simultaneously a current of gradually increasing intensity flows through the winding 14 and eventually overpowers the effect of the winding 18 so that the relay operates to close its contacts 21, 22. On opening the switch 20, the current through the winding 14 diminishes and eventually becomes zero and the biased armature moves to the open position. In a modification, Fig. 2, not shown, the D.C. source is connected to the middle of the operating winding, the ends of which are each connected to a capacitor. This has the advantage that when the D.C. source is first connected in circuit the relay does not pick up.
Patent GB-2002988-A (GB)
Title: Radiography
IPC: A61B6/03
Filed: 1978-08-08
Abstract: This application describes a rotation-only CT scanner with additional source deflection; the deflection and the rotation being so related as to permit the derivation of absorption data in groups focussed on respective "pivot points" outside the detector locus. Data derived from different detectors, but focussed on the same pivot point, relate to groups of paths, some of which overlap, and the overlap is used to compare the performances of different detectors. To reduce data handling, data provided by adjacent detectors can be combined. Additional source deflection is achieved using a scanning X-ray tube whereby the source, viewed from "pivot point" P in the stationary reference frame, moves from F(a) to R(b) then, after flyback, from F(c) to R(d) etc. During these periods, respective detectors Dr, Dr + x receive radiation whose direction intersects point P, and since both detectors receive radiation along similar paths in area 39, the outputs from the two detectors can be compared and averaged. <IMAGE>
Patent GB-2004936-A (GB)
Title: Improvements in window frames
IPC: E06B3/12
Filed: 1978-10-06
Abstract: A kit of parts for constructing a window frame comprises a plurality of extruded sections for forming mullions, transoms and frame members. The width of the extruded sections in the direction parallel to the plane of the glazing opening in an assembled frame is an integral multiple of the spacing m, in such plane, between the glazing upstands 15 and the beading flanges 16. The extrusions are formed with elongate channels for receiving arms of an L- shaped member (41) and a nut (43). A screw (46) connects the nut to one arm.   <IMAGE>
Patent GB-2032506-A (GB)
Title: Tank
IPC: E04H7/14
Filed: 1978-10-20
Abstract: A tank 14, particularly a large storage tank for containing liquids under pressure, for example liquefied gases, comprises two or more shells 14a, 14b connected in the vertical plane of intersection therebetween, each of these shells constituting a section of a spherical shell. The tank is supported in the transition zones between adjacent shells 14a, 14b by a bearing structure, for example a vertical wall 15, around the entire circumference thereof. A vertical, internal tank partition wall or internal stiffener may be provided in the plane of intersection between the tank shells, this partition or stiffener constituting a portion of the bearing structure. <IMAGE>
Patent GB-2032253-A (GB)
Title: Harness for lifting a human body
IPC: A62B35/00
Filed: 1978-10-26
Abstract: A harness for lifting a human body comprises a handle 14 stitched to a waist-band 10 together with fixed end 12 of a strap 11 and a further handle 15 movable along the waist-band part. A quick release buckle 16 depending from the loose handle receives a free end 13 of the strap after the latter has been fed under the thighs of the body.   <IMAGE>
Patent GB-2011285-A (GB)
Title: Cyclone separator
IPC: B04C5/28
Filed: 1978-11-10
Abstract: The invention provides a cyclone separator for the removal of entrained solids from gases, the cyclone separator (32) having a barrel portion (56) and a conical portion (58) which cooperatively define a separation chamber (60), a gas inlet (54) in open communication with the portion of the separation chamber defined by the barrel portion, a gas outlet tube (35) extending centrally, upwardly from the barrel portion, a solids discharge outlet (62) located at the lower end of the conical section, and a solids discharge dip- leg conduit (34) in open communication with the solids outlet, wherein L/D = -1.09 (O/I) +4.49 where D is the internal diameter of the barrel portion, L is the distance between the lower end of the outlet tube and the upper end of the dip- leg conduit, O is the cross-sectional area of the gas outlet tube (35) and I is the cross-sectional area of the gas inlet (54). The cyclone may be provided with a dust bowl 33. Two cyclones connected in series may be used to separate entrained solid catalyst from hydrocarbon vapours or flue gases in the regeneration of a fluidised catalytic cracking unit. <IMAGE>
Patent GB-2008593-A (GB)
Title: Process for the preparation of epoxides
IPC: C07D301/14
Filed: 1978-11-23
Abstract: A process for the preparation of an epoxide from an olefin having a boiling point above 40 DEG C at from 1 to 15 bar which comprises oxidizing acetaldehyde to peracetic acid using oxygen or a free oxygen-containing gas in an organic solvent and in the presence of a heavy metal oxidation catalyst and epoxidizing the olefin using the peracetic acid at a temperature of from 50 to 150 DEG C at a pressure of up to 15 bar, the acetaldehyde, solvent and catalyst- containing peracetic acid reaction mixture obtained from the oxidation of the acetaldehyde being reacted with the olefin or a solution thereof in an organic solvent in the presence of a complex- forming agent and unreacted acetaldehyde, solvent and some of the acetic acid simultaneously being distilled off while a stream of inert gas is passed through the reaction mixture is disclosed. The main advantage of the present process over the prior art is that it eliminates the dangerous purification by distillation of potentially explosive peracetic acid.
Patent GB-2040172-A (GB)
Title: Maze game
IPC: A63F9/00
Filed: 1979-02-01
Abstract: An electrical maze game having control switches, a processor, and a display 5 which is capable of displaying only a part of the maze. In one embodiment of the invention, only one cell of the maze is displayed, and the switches control the processor to simulate movement from the displayed cell to any immediately adjacent cell. This simulates the practical situation in which the player cannot view the plan of the maze and can move only to the cell immediately adjacent to the one he occupies. Two control means may be provided so that players may race each other out of the maze or pursue one another. The maze may be of triangular or hexagonal form and five adjacent cells may be displayed. <IMAGE>
Patent GB-2045487-A (GB)
Title: Data collection equipment
IPC: G06F3/023
Filed: 1979-03-23
Abstract: Equipment for use in collecting data from forms has a keyboard, an indicator, a processing unit, and control parameter memories (P1-Pn). In use, a form is placed on a receiving panel, and one of the memories (P1-Pn) which pertains to the kind of form in question is selectively connected into the equipment. The selected memory sequentially illuminates appropriate light-emitting elements at the form- receiving panel so as to give a visual indication of the different form captions under which data is to be collected. <IMAGE>
Patent GB-2021577-A (GB)
Title: Halogenated Hydrocarbons, Useful as Insecticide Intermediates, and Methods for their Preparation
IPC: C07C21/19
Filed: 1979-05-10
Abstract: Halogenated hydrocarbons of ed formula:  RR<1>C=CH-CH2CYZQ  and  RR<1>C=CH-CH=CYQ,  and mixtures thereof, wherein Y is F, Cl or Br, R is hydrogen or a lower alkyl group, R<1> is a lower alkyl group, Z is Y or Q and Q is W(CF2)m in which W is hydrogen, F or Cl and m is 1 or 2, and a process for their preparation which comprises heating in a polar aprotic solvent, preferably in the presence of an alkali metal halide, a halogenated hydrocarbon of formula  RR<1>C-CHX-CH2GYZQ wherein R,R<1>,Y,Z and Q have the previously defined meanings and X is Cl, Br or I, provided that X is always Br or I when at least one of Y and Z is Br.
Patent GB-2052250-A (GB)
Title: Tea filter
IPC: A47J31/06
Filed: 1979-06-15
Abstract: A tea filter which can be used directly in a teapot consists of side panels (1) and (2) comprising water permeable paper material (3), the panels being firmly connected with each other in their edge areas (8, 7, 9) and being situated close to each other in an essentially flat condition when the filter is stored. When used, the filter forms a receptacle for the tea leaves by separating the panels from each other. The filter having a straight upper edge and downwards converging side edges (11, 13). Each of the two upper edges is folded round a thin and soft metal wire (16, 17). The folded areas (18, 19) are heat sealed. The metal wires, which project a small distance from the upper edges of the filter, are welded together at their outer ends 22. <IMAGE>
Patent GB-2053496-A (GB)
Title: Fade-resistant Diazo Microfilm
IPC: G03C1/52
Filed: 1979-07-03
Abstract: A diazo microfilm which is resistant to fading upon exposure to strong light for extended periods of time is provided. The fade-resistant diazo microfilm is produced by saponifying a cellulose alkanoate film to an extent defined by certain infrared absorption parameters.
Patent GB-2056725-A (GB)
Title: Generator output regulator
IPC: H02J7/14
Filed: 1979-08-13
Abstract: Rectified direct current at constant voltage is obtained from an alternator 1, driven over a wide range of speeds, by moving a permanent magnet rotor 5 axially in relation to the stator 3 to decouple the magnet flux from the stator windings 2 when the speed rises. The rotor 5 is moved by means such as an hydraulic piston 16 controlled by a bi-directional valve 21 according to an error signal proportional to the difference between the actual generator voltage and the required constant voltage. The rotor is moved in a direction to reduce this error signal. <IMAGE>
Patent GB-2032407-A (GB)
Title: A Process for the Production of Nuclear Fuel Monocarbide
IPC: C04B35/56
Filed: 1979-09-28
Abstract: The invention provides a process for the production of a nuclear fuel monocarbide which comprises reacting an oxidic nuclear fuel with uranium dicarbide as a carbon- containing material at a temperature above 1300 DEG C. The nuclear fuel monocarbide is particularly uranium monocarbide or uranium-plutonium monocarbide. Preferably the molar ratio of oxidic nuclear fuel to uranium dicarbide during the reaction amounts to about 1:3, the reaction is carried out at a temperature above 1600 DEG C and the reaction is carried out in a vacuum of </=10<-6> bar. In the process according to the invention no uncontrollable quantities of CO-gas are given off during the reaction or during subsequent production of fuel pellets, batches formed do not differ from one another in regard to their carbide content and plutonium is introduced as late as possible into the process.
Patent GB-2063602-A (GB)
Title: Signal dependent thresholding
IPC: H03K5/08
Filed: 1979-11-16
Abstract: A data slicing circuit in which the pulse widths of digital electronic signals are determined by each pulse forming its own reference level whereby the effect of pulse distortions is overcome. The circuit comprises   (a) means (1) for amplifying an initial series of pulses to be sliced, (b) first signal delay (2) connected to the output of the said amplifier (1) for delaying the amplified initial pulse series by an amount at least equal to half rise- time/fall-time thereof to provide a first input to a comparator (5), (c) second signal delay (4) for delaying the amplified initial pulse series by an amount twice that provided by the said first signal delay, (d) a non-additive mixer (3) connected to the output of the said signal delays and the output of the said amplifier (1), for non-additively mixing the delayed pulses with the amplified initial pulses to provide a third series of pulses, (e) means (R1, R2) for attenuating the third series of pulses to form a second input to the comparator (5).   The comparator (5), e.g. a Schmitt trigger, compares the inputs thereto to provide an output signal whenever the voltage of a first input pulse exceeds the voltage of a second input pulse, one input of the comparator being connected with the output of the first signal delay (2), and the other input being connected to the output of the mixer (3). <IMAGE>
Patent GB-2037563-A (GB)
Title: Ruminant feed stuff
IPC: A23K10/33
Filed: 1979-11-21
Abstract: A palatable, easily stored and transported and highly nutritious feed stuff for ruminants containing protein undegraded in the rumen is a liquid comprising, in specified proportions, molasses, delactosed whey concentrate, formaldehyde, an alkaline agent, an acid and a suspension agent. A dry protein may be suspended therein. Other optional ingredients are discussed. The formaldehyde is blended with the delactosed whey concentrate in a sufficient amount to protect the milk protein from degradation by rumen micro-organisms. The alkaline agent serves to neutralise the lactic acid in the delactosed whey concentrate. The acid prevents deterioration of the feed stuff in storage.
Patent GB-2066990-A (GB)
Title: A computer input/output system for Chinese data processing
IPC: B41J3/01
Filed: 1979-12-28
Abstract: In a computer input/output system for Chinese data processing, 173 basic components of Chinese characters are classified into 26 groups denoted by A through Z respectively, and each Chinese character is represented by a code consisting of three English letters each of which represents the group under which a basic component of the Chinese character is classified. More than 11,000 Chinese characters together with their codes are arranged in matrices which can be stored in the computer or photographed on a film used in a photo typesetting machine in the computer system. In the photo typesetting machine of Fig. 4, a character cylinder 10 is moved rotationally and axially to select a matrix and then a character within it, under control of keyboard input at 20 to a microprocessor 401, the selected character being displayed for checking at 56. Fig. 21 (not shown) shows a Chinese typewriter with character tape (167). <IMAGE>
Patent GB-2067328-A (GB)
Title: Anti-theft arrangement for vehicle identification plate
IPC: B60R13/10
Filed: 1980-01-11
Abstract: A vehicle number plate 1 is trapped in two parts of a support plate 2 slid together so that a turned-over edge 3a completely embraces the periphery of the number plate, in each part of the support plate there being a screw 7 with a head 8 recessed into a depression 5 in the support plate and covered by the number plate. The shank of the screw has a square-section part 7b which engages a square hole in the support plate to prevent rotation of the screw and passes through the metal 6 of the vehicle. A nut 14 is screwed onto a sprung locking washer 11, the nut and washer interengaging to prevent the nut being undone, and the surface of the nut being domed to hinder removal. The nut may include a hexagonal portion to facilitate tightening, but which breaks off once a suitable torque has been applied. <IMAGE>
Patent GB-2044552-A (GB)
Title: A low power electrical machine, especially a low power motor
IPC: H02K11/25
Filed: 1980-02-14
Abstract: This invention relates to an electric low power machine, especially a low power motor. The low power motor comprises a brush carrier plate 10 made from a resilient plastics material which is provided with supports 22, 24, for choke coils 26 and a capacitor 28. To enable a component such as a switch to be pre-mounted by a simple plugging-in action and to be securely retained on the carrier plate 10 for subsequent soldering operations, the plate has upstanding resilient members 36 with stop shoulders 40 which engage behind counter abutments 54 on the switch when this is plugged in. <IMAGE>
Patent GB-2045324-A (GB)
Title: Window Blinds
IPC: A47H5/14
Filed: 1980-03-11
Abstract: A window blind (1) which is to be raised and lowered through the agency of a series of cords (6) is provided with a number of spaced parallel vertical bands (2). The bands (2) have secured thereto to form parallel horizontal rows, press-button parts (3), to which complementary press-button parts (4) may be readily attached and removed. These other parts (4) mount rings (5) through which the cords (6) may be threaded and then anchored to a weighty lower cross member (9). When it is wished to remove the blind, as for cleaning, it is only necessary to disengage the part (4) from the parts (3), thus avoiding time-consuming removal and rethreading of the cords (6) through their rings. <IMAGE>