baber/WOPTO huggingface dataset:
Patent GB-1048865-A (GB)
Title: Polystyrene foam having a high content of filler and process for its manufacture
IPC: C08J9/224
Filed: 1964-08-12
Abstract: Shaped articles of polystyrene foam containing at least 10% of a filler of average grain size 1-50 microns may be produced by mixing polystyrene containing 2-6% of a vaporizable blowing agent with the filler, shaping the mixture in a press at a final temperature such that the extruded article has a density less than half that of the same material in the non-porous state, cooling the article to room temperature, and subsequently further expanding it by heating.  The grain size of the filler is preferably 1-20 microns, and the amount 10-100% by weight of the polystyrene.  The blowing agent may be an aliphatic or cycloaliphatic hydrocarbon or mixture of such hydrocarbons with a boiling point of 0-100 DEG  C.  In the process a mixture of polystyrene granules having a high content of blowing agent with granules having a low content of or no blowing agent may be used. The shaped articles may be subjected to a plurality of successive expansion by alternate heating and cooling.  Specified fillers are thermostable and insoluble in polystyrene and include inorganic colourless pigments such as anhydrite, alumina, burnt magnesia, talc, fuller's earth, kieselguhr, silica gel, TiO2, kaolin, bentonite and asbestos flour; coloured inorganic pigments such as iron oxide, carbon black and chrome yellow; and coloured organic pigments such as the phthalocyanines and the vat dyes of the anthraquinone series. The use of mixtures of Sb2O3 with chloroparaffins or with polyvinyl chloride, polyvinylidene chloride or chlorinated polyvinyl chloride renders the product flameproof. Materials such as iron oxide or graphite give an electrically conducting product.  In examples the blowing agent is pentane.
Patent GB-951971-A (GB)
Title: Improved controlled apparatus for feeding fibrous material to chutes or hoppers
Inventor: GREENWOOD ROBERT
IPC: D01G23/02
Filed: 1961-09-13
Abstract: 951,971. Shoots; endless conveyers. T.M.M. (RESEARCH) Ltd. Sept. 4, 1962 [Sept. 13, 1961], No. 32867/61. Headings B8A and B8S. [Also in Division D1] Apparatus for feeding fibres to a shoot or hopper includes a rotary suction cage that is operated intermittently under automatic control to maintain a constant head of material in the hopper. The cage 10 is mounted alongside a conveyer from which it draws fibres until they form a mat of such thickness as to block the flow of air. When a photo-sensitive cell B is actuated upon the level of the fibres in the shoot falling below the level of a light beam, the cage 10 makes a partial rotation to deposit the mat of fibres in the shoot and present another area of the cage towards the conveyer. Vanes 11 are carried by the cage for co-operation with a stationary air deflector H, and a baffle plate 12 is provided within the cage. The cage-indexing mechanism may be driven by an electric motor which is started by the cell B and may be stopped by a micro-switch that is tripped when one of the vanes 11 reaches the cage loading station.
Patent GB-1343341-A (GB)
Title: Electrostatic precipitator and gas sampling system
IPC: B03C3/12
Filed: 1971-07-13
Abstract: 1343341 Electrostatic separation SHERRITT GORDON MINES Ltd 13 July 1971 [4 Aug 1970] 32900/71 Heading B2J An electrostatic precipitator is described for removing finely divided particulate material (down to 0.01 microns) from gas sample streams withdrawn from ore reduction roasters for analysis in gas chromatography units. As shown, the precipitator comprises a gas inlet 87, an ionisation chamber 55 with an ionising wire 60 stretched in horizontal runs between insulator strips 61 (Fig. 3, not shown), a dust collecting chamber 56, a collector chamber 57 having a central plate electrode 67, and an outlet 90 (Fig. 4, not shown), the housing members 45, 46, 49 and central divider 54 being constructed of stainless steel. The electrodes 60 and 67 are connected to an HT source by sparking plug type connections 63, 71 in a nitrogen filled upper housing 77. The housing 31 may be unbolted and slidably separated from the housing 77, electrodes 60 and 67 and plate 54 for emptying collected dust. The path between the ore roaster 11 (Fig. 1, not shown) and gas chromatography unit 12 may include a pre-filter screen 18 and means 38, 39 for back-blowing this screen with an inert gas such as nitrogen.
Patent GB-867982-A (GB)
Title: Process for the preparation of cyanuric acid
IPC: B44D3/06
Filed: 1959-09-28
Abstract: Cyanuric acid is prepared by the pyrolysis of urea in dipropylene glycol solution containing, preferably, at least one mole of urea per mole of glycol at a temperature of 150-250 DEG C. The pyrolysis is preferably effected at 200-230 DEG C., under subatmospheric, superatmospheric, but preferably atmospheric pressure.  The urea feed which may not be pure, e.g. may be a partially pyrolysed material containing some biuret and/or cyanuric acid, may be added to the dipropylene glycol in the solid or molten form.  Addition of zinc or ammonium chloride as catalysts is also referred to.  After reaction the cyanuric acid which forms as a suspension in the glycol may be isolated therefrom by filtration or centrifugation, washed with water and dried.  Purification may be effected by treatment with dilute acid, to hydrolyse impurities, followed by further filtration, washing and drying.  Residual liquid from the isolation of the cyanuric acid may be returned to the process.
Patent GB-624640-A (GB)
Title: Improvements relating to the vacuum-sealing of bottles, jars and other like containers
IPC: B65B31/04
Filed: 1946-11-06
Abstract: 624,640. Bottling; stoppers. LINDSELL, A. L., and LINDSELL, H. Nov. 6, 1946, No. 32957. [Classes 125(ii) and 125(iii)] [Also in Group XXVIII] Means for vacuumsealing bottles, jars and like containers comprises in combination a suction pump 10 and a closure member 1, the closure 1 being formed with a valve opening .4, a recess 3 for receiving a flexible disc valve 2, and a further recess 8 adapted to locate a cup-shaped washer 9 at the lower end of the pump, washer' 9 being gripped between a conical plug 11 and the lower edge of the pump body. Upward movement of valve 2 is limited by plug 11 whilst allowing air withdrawn from the container to pass through a groove 13 and a central bore 14 in the plug into the interior of the pump. The closure member may be a metal stamping or a plastic moulding. The suction pump may be operated automatically instead of manually as shown. According to the Provisional Specification, the valve in the closure member may consist of a spring-loaded ball, or a rubber flap one edge of which is secured to the lid or trapped in position by the pump.
Patent GB-813653-A (GB)
Title: Improvements in telephone message recording and message repeat back systems
Inventor: WALDMAN HERBERT
IPC: H04M1/654
Filed: 1956-10-29
Abstract: 813,653. Sub-station equipment. ROBOSONIC INDUSTRIES Inc. Oct. 29, 1956, No. 32991/56. Class 40 (4). In a phonographic device for answering and recording incoming calls, a microphone 32 and a loud-speaker 33 are acoustically coupled to the handset 24 and, on the arrival of an incoming call, the sound of the telephone bell is picked up by microphone 32 to set the device in operation by way of amplifier 42, neon lamp 39; photo-electric cell 44a, amplifier 45 and relays 46 and C ; the necessary switching operations are effected at predetermined times by two cam shafts 21 and 22 driven by motors 65 and 78 respectively. A solenoid 27 controls the cradle-switch and a bell 34 signals to the caller when to start and stop speaking. Previously recorded instructions to the caller are sent from turntable 52, and the caller's message is recorded on wire or tape 64. An authorized person may rewind and play back the wire or tape 64 by calling the sub-station and sending a code of sound and silence (operating and releasing relay C) to coincide with switching effected by the cam-shafts. If the correct code is not sent, motor 78 is reversed.
Patent GB-1004468-A (GB)
Title: Chroman derivatives
Inventor: AUGSTEIN JOACHIM
IPC: C07D311/58
Filed: 1963-08-21
Abstract: The invention comprises 2-guanidomethylchroman and its pharmaceutically acceptable salts and its preparation by the reaction of 2-aminomethylchroman with a salt of 3,5-dimethyl-1-guanylpyrazole. 2-aminomethylchroman is made from chroman-2-carboxylic acid by treatment with thionyl chloride followed by ammonia to give chroman-2-carboxamide which is reduced with lithium aluminium hydride.  Therapeutic compositions with anti-hypertensive properties in the form of tablets, capsules, elixirs, suspensions or solutions for oral or parenteral application comprise 2-guanidinomethylchroman or its pharmaceutically acceptable salts in admixture with a pharmaceutically acceptable carrier.
Patent GB-1395698-A (GB)
Title: Wire connector clips
IPC: H01R4/20
Filed: 1971-07-14
Abstract: 1395698 Sleeve connectors EGERTON CONNECTORS Ltd 6 July 1972 [14 July 1971] 33141/71 Heading H2E A crimping clip for jointing insulated cables comprises a metal channel 5 whose side flanges 6, 7 each have a plurality of teeth 12, 13 along their free longitudinal edges, and a resilient insulating channel 21 in which the metal channel rests. The insulating channel 21 has, in its unstressed condition, side flanges 22, 23 which are inclined inwardly of the channel making an acute angle with the web 24 channel 21 so that in the rested condition the flanges 22, 23 grip the flanges 6, 7, the teeth 12, 13 digging into the flanges 22, 23 without penetrating right through.
Patent GB-950102-A (GB)
Title: Improvements in or relating to systems for detecting and recording vehicle movements
IPC: G08G1/127
Filed: 1961-09-15
Abstract: 950,102. Electric selective signalling systems. BRITISH TRANSPORT COMMISSION, and A. READMAN. Sept. 15, 1961, No. 33198/61. Addition to 881, 721. Heading G4H. The system of the parent Specification is modified to permit identification of a larger number of buses by providing each bus with a code plate comprising three different types of reflective indicia (e.g. red, blue and white reflective). Photo-cell 28<SP>1</SP> is sensitive to blue and white light and photo-cell 29<SP>1</SP> is sensitive to red and white light. The amplified photo-cell outputs A, B are applied to gates 101, 102; 103 as shown, the second input to AND gate 103 being an inhibit input from AND gate 101. In this way, clock pulses are generated at frequency f1, and the code identifying a bus is transmitted as a train of impulses of frequency f2 or f3 or no signal. The respective frequencies are filtered out at the control centre, and the bus identity is decoded and displayed.
Patent GB-1381129-A (GB)
Title: Analog-to-digital converters
IPC: G01R23/02
Filed: 1972-07-15
Abstract: 1381129 Measuring power FERRANTI Ltd 13 July 1973 [15 July 1972] 33215/72 Heading G1U [ Also in Division G4] A digital watt-meter for A.C. power comprises two A/D converters 28, 38, a first providing a digital output which is an inverse function of a voltage, and a second providing a similar indication of the corresponding current, (see Division G4), and also comprises means 44 for providing a digital indication of the period of the A.C. signals, e.g. employing a trigger flip-flop circuit activated by a mean-value detector circuit which forms a part of one of the converters 28, 38 together with a clock and counter, and means for digitally indicating the phase angle # between the voltage and current, e.g. employing a further flip-flop circuit triggered by the mean value detectors of both the converters 28, 38 to gate clock pulses to another counter for a period depending on the responses of these detectors. The four outputs are used at 51 to calculate the watts used and a KWH indication is provided by deriving from the output at 51 a pulse track of a frequency indicative of this output at 52 which supplies input to a stepping motor 55 controlling a meter 56. 3-phase supply may be monitored using a multiplex technique.
Patent GB-1490595-A (GB)
Title: Recording apparatus coding circuit for an image signal and corresponding decoding circuit
IPC: H04N5/917
Filed: 1975-08-08
Abstract: 1490595 Television THOMSON-CSF 8 Aug 1975 [9 Aug 1974] 33248/75 Heading H4F A coding/decoding system for use in image recording apparatus effects upon coding bandbandwidth reduction. Video signal E, Fig. 1, is separated into adjacent frequency bands of equal width by filters 1 and 2. The higher band of signals emanating from filter 2 is transposed, by a single side band (SSB) modulator 4 into the frequency range of the lower band emanating from filter 1. A switch 7, actuated at the frame rate, selects the translated high band portion and the low band portion alternately. Bursts of the reference oscillation employed by SSB modulator 4 are added to the translated high band portion, in the horizontal blanking intervals, at 6 prior to recording of the resultant signal termed "the alternate signal". On playback the alternate signal A, Fig. 2, and this signal delayed, A<SP>1</SP>, are applied to a double switch 20 having two outputs. The switches are controlled by a circuit under the influence of the bursts of reference oscillations extracted by filters 25, 26 so as to provide on one output the low band portion and on the other the translated high band portion. The latter passes a demodulator 23 which translates it to its original high band prior to combination in an adder 24 with the low band portion to reproduce the video signal V. The bursts of reference oscillation may be added to the translated high band portion upstream of switch 7, Fig. 1. Colour signals may be added to the two signal portions immediately upstream of switch 7. These occupy a narrow band immediately above the lower band, and are extracted by filters prior to application to a further double switch identical in nature and control to the first double switch, Figs. 3 to 5 (not shown). Alternatively the colour component may be extracted downstream of first switch 20, Fig. 2, obviating the need for the second such switch.
Patent GB-848519-A (GB)
Title: Processes for the production of alkylboric acid esters and free alkylboric acids
IPC: C07F5/02
Filed: 1958-10-20
Abstract: Alkylboric acid esters are produced by heating a boron trialkyl of the formula BR3, in which R represents an aliphatic hydrocarbon radical, with a boric acid ester of the formula B(OR1)3 in which R1 represents an aliphatic hydrocarbon radical, to a temperature exdeeding 100 DEG  C. and advantageously to 200 DEG  C. or higher.  A monoalkylboric acid diester is generally formed, the dialkylboric acid monoester first formed being converted with disproportionation into the monoalkylboric ester and trialkyl boron.  Preferably 1 mol of boron trialkyl is heated with 2 mols of a boric acid ester, possibly in a pressure vessel, to between 200 DEG  and 250 DEG  C. The reaction may be effected without solvents so the product is obtained directly in pure form.  Aliphatic or aromatic hydrocarbons or ethers may be used as solvents if desired.  The alkylboric acid esters produced may be hydrolysed to give the alkylboric acids or water may be split off to form the B-alkylboroxoles.  The alkylboric acid esters are important as additives to engine fuels.
Patent GB-909219-A (GB)
Title: Improvements in bis(diarylcarbinols) and polyether resins prepared therefrom
IPC: C08G65/34
Filed: 1960-09-30
Abstract: Polyether resins are made by heating together (A) a bis-diarylcarbinol of any of the formulae Z2, Z2O, Z(CRR1)nZ and ZO(CRR1)nOZ, wherein Z is p-C6H5CHOHC6H4-, R and R1 are H or C1-10 alkyl and n is an integer 1-5, with (B) a different bifunctional alcohol containing at least 2 -OH groups attached to aliphatic chains and at least 4 C atoms apart, under conditions promoting elimination of water.  According to examples, polyethers are prepared from (I) Z2O, a glycol* which is dimerized and reduced linoleic acid, and pentaerythritol, (II) ZOCH2CH2OZ, 1:10-decanediol and 2:2-bis(p-2-hydroxyisopropoxyphenyl) propane, (III) Z2, and either the glycol* with pentaerythritol or 3:6-dimethyl-4-octyne-3:6-diol with 2:5-dimethyl-3-hexyne-2:5-diol, and (IV) ZC(CH3)2C(CH3)2Z and either glycol* with pentaerythritol or 3:6-dimethyl-4-octyne-3:6-diol.ALSO:The invention comprises bis-diarylcarbinols of any of the formulae Z2, Z2O and Z(CRR1)nZ, wherein Z is p-C6H5CHOHC6H4-, R and R1 are H or C1-10 alkyl and n is an integer 1-5.  The following compounds were prepared by reduction of the corresponding diketones with H2/Raney Ni/KOH:- Z2, Z2O (two forms isolated), ZOCH2CH2OZ (known) and ZC(CH3)2C(CH3)2Z; the diketone -probably novel-required as precursor of the latter is prepared by reaction of dicumyl with C6H5COCl/AlCl3.
Patent GB-918256-A (GB)
Title: Improvements in or relating to the production of a union between films of different composition
IPC: G03D15/04
Filed: 1960-09-30
Abstract: 918,256. Joining film strips. THEILEMANN, H. A. Sept. 30, 1960 [Sept. 30, 1959], No. 33668/60. Class 98 (2). Two film ribbons of different compositions are joined together by joining them both to an intermediate film strip of multi-layer construction; the two outer layers of the intermediate strip are of the same materials as the respective film ribbons, the like surfaces being joined together. In Fig. 1, two film ribbons of different material, such as nitrocellulose and polycarbonate, are shown as 1 and 2. (The emulsion layers on the films are removed over the area intended for joining.) The intermediate strip comprises foils 3, 4 of the same materials as 1, 2, respectively, foils 3, 4 being stuck together by an adhesive layer 5 of a copolymer of vinyl chloride and vinyl isobutyl ether, which may be prepared as given in a specific example. The same example specifies the adhesive compositions which are then used to stick the two cellulose surfaces together, and the two polycarbonate surfaces together. In a further example, the adhesive layer 5 securing the two foils 3, 4 together is itself formed as a multi-layer construction, comprising three different layers of specified materials.
Patent GB-1397753-A (GB)
Title: Process and apparatus for positioning a vertically movable platform in front of a target location
Inventor: SUTER W
IPC: B66F9/075
Filed: 1972-07-19
Abstract: 1397753 Storage systems OEHLERWYHLEN-LAGERTECHNIK AG 19 July 1972 [20 July 1971] 33782/72 Heading A4T To position a lifting platform in front of a pallet bay F, the platform is first coarsely automatically positioned above the bay and is then lowered until a sensor group B indicates the correct position has been reached, the sensor group B comprising an infrared transmitter 27 emitting a modulated collimated beam which is focused on to a predetermined point in the bay and is diffusely reflected and detected by a receiver 28 positioned behind a shutter 29. A second sensor group A senses whether the bay is empty or not. The receiver may be a photo-diode and the transmitter may be a micro-laser, an infrared lamp with a convergent lens system and a rotary slotted disc for modulating the emitted radiation, or a gallium arsenide diode and a telescopic optical focusing system
Patent GB-845999-A (GB)
Title: Pulse position and angular modulation means
IPC: H03K7/04
Filed: 1956-11-06
Abstract: 845,999. Frequency and phase modulation COLLINS RADIO CO. Nov. 6, 1956 [Feb. 20 1956], No. 33865/56. Class 40(5). Angular modulation is produced by applying a sawtooth wave through a diode 18 to an intermediate point 16 of a voltage divider 14, 13 on to which an amplitude varying signal voltage is superimposed so that the beginning of conduction of diode 18 and hence leading edge of a pulse produced by differentiating the sawtooth wave slope by a C.R. circuit 20, 25 vary in time in accordance with the modulation. The pulse output may then be amplified by a valve 21 having connected to its anode circuit a further differentiating circuit 31, 32, 33 including a diode 32 so that only narrow pulses corresponding to the leading edges of the first pulses pass to a further amplifier 36 having a ringing anode circuit 38 shock excited by the input pulses, and resonant at the fundamental or a harmonic of the frequency of the sawtooth wave. The output of the resonant circuit 38 taken through a band-pass filter 46 is then a phase modulated wave, or a frequency modulated wave if a network varying the amplitude of the modulating signal inversely proportional to its frequency precedes the voltage divider point 16, the centre frequency being that harmonic of the sawtooth repetition frequency selected by the ringing circuit 38. The sawtooth flyback is eliminated by the diode 18 and the voltage divider resistance 14 is adjusted so that the bias at point 16 coincides with the centre of the linear portion of the sawtooth. The sawtooth may be produced from a "bootstrap" circuit. The amplifiers 21, 36 may be omitted if the output signal bandwidth may be small, permitting the ringing circuit 38 to be of high Q type, e.g. a mechanical resonator.
Patent GB-936950-A (GB)
Title: Improvements in or relating to boats
IPC: B63H11/08
Filed: 1958-10-23
Abstract: 936,950. Valves. I. R. FLEMING. Oct. 8, 1959 [Oct. 23, 1958], No. 33874/58. Class 135. [Also in Group XXXIII] An hydraulic jet propulsion unit for a boat (see Group XXXIII) has an air release valve comprising a buoyant ball 27 which rests on the seat 28 and allows air to escape through the outlet 29. When all the air has escaped water in the casing 26 raises the ball to the seat 30. Specification 503,593 is referred to.
Patent GB-521571-A (GB)
Title: Improvements in coloured concrete building structures
IPC: F41H3/00
Filed: 1938-11-22
Abstract: 521,571. Coloured concrete for walls, roofs, and roads. ANFT, P., and HASSENSTEIN, W. Nov. 22, 1938, No. 33972. [Classes 20 (i) and 20 (iv)] Walls, roofs, roads and the like are camouflaged by constructing them of batches of different coloured concretes, cast in situ, to form an integral mass with variations of colour extending throughout its entire thickness. In the event of damage occurring the exposed portions are still multicoloured and therefore indistingushable from the original surface. The cement used in the concrete may be previously coloured or alternatively the colour may be added during the mixing. Coloured stone powder and brick powder, or fibrous substances coloured with tar or mineral colours may be used as colouring material. Bituminous emulsions such as densin cerein oil, or ceresit, may be used with the water in the mixing to render the concrete waterproof. Alum and permanganate of potash may be used to swell the fibrous material when such is used in the concrete.