baber/WOPTO huggingface dataset:
Patent GB-1502173-A (GB)
Title: Sulphuric acid alkylation process
IPC: C07C2/62
Filed: 1975-10-01
Abstract: 1502173 Alkylating isoparaffins TEXACO DEVELOPMENT CORP 1 Oct 1975 [18 Oct 1974(2)] 40163/75 Heading C5E Isoparaffins are alkylated with C 3 -C 5  olefins in the liquid phase in the presence of H 2 SO 4  catalyst in a non-back-mixing reaction zone, the process comprising: (a) contacting isoparaffin and olefin reactant hydrocarbons with sulphuric acid alkylating catalyst containing 0À0005 to 0À5 weight per cent, based on sulphuric acid, of a micelle-forming amphiphilic compound (defined) to form a hydrocarbon in acid catalyst reaction emulsion; (b) flowing the reaction emulsion, at alkylation conditions, through the non-back-mixed reaction zone at a rate sufficient to provide a Reynolds number of at least 5000 for conversion of essentially all olefin reactant while maintaining the temperature within the reaction zone within the range of- 20‹ to 100‹ F., and; (c) centrifugally separating, in a separation zone, reaction zone effluent into a hydrocarbon phase comprising unreacted isoparaffin hydrocarbon and alkylate hydrocarbon, and an acid catalyst phase under dynamic separation conditions such that separated hydrocarbon phase is immediately removed from contact with separated acid catalyst phase. Suitable micelle-forming amphiphilic compounds are N(alkyl)alkyl sulphonamides, N(alkyl) benzene sulphonamides, alkyl sulphonium salts, alkylphosphonium salts, alkyl benzene sulphonic acids, aliphatic amines, N,N<SP>1</SP>,N<SP>11</SP>-tri(alkyl) phosphonic triamides, ammonium salts and salts of alkyl sulphates. Suitable compounds should contain at least one C 8 -C 24  alkyl radical.
Patent GB-1407491-A (GB)
Title: Keying device for a dental model and  a method of constructing  a dental model using said device
IPC: A61C9/00
Filed: 1972-08-30
Abstract: 1407491 Dental model keying device THOMAS TECHNADENT PRODUCTS INC 30 Aug 1972 [26 April 1972] 40209/72 Addition to 1300191 Heading A5R A keying device for use in making a dental model is similar to that described in the parent Specification 1300191 but modified in that there is no interlocking portion on the arch-shaped ridge but a flat surface 1 is provided in a plane perpendicular to the corrugated surfaces of the key 2. The flat surface 1 may be adhered or cemented in use to the pre-formed flat surface of a dental model as illustrated in Figure 1 '(not shown). As in the parent specification, the keying device may be removably embedded in a matrix base (not shown) by its corrugated key 2 and, together with the. model, the keying device may be removed from the matrix base, worked on or divided into segments, and then returned to the base as desired.
Patent GB-1530648-A (GB)
Title: Flexible damped bearing support
IPC: F16C17/03
Filed: 1976-09-28
Abstract: A bearing (20) for the horizontal rotor shaft (11) is arranged in a movable bearing-support member (16) which is fastened on a stationary housing (15) by means of a series of flexible spiral springs (25). A cavity (30) between the bearing-support member (16) and the housing (15) receives a damping-fluid film. In order that the weight of the rotor does not cause any non-symmetrical loading of the spiral springs (25) and of the damping-fluid film, a beam-shaped auxiliary spring (45) is arranged between the housing (15) and the bearing-support member (16), beneath the horizontal central line of the rotor. The auxiliary spring (45) is prestressed and exerts a force on the bearing-support member (16) to compensate for the weight of the rotor at rest. <IMAGE>
Patent GB-1473620-A (GB)
Title: Fabric draw-off and take-up in circular knitting machines
IPC: D04B15/88
Filed: 1975-10-03
Abstract: 1473620 Knitting machines C TERROT SOHNE 3 Oct 1975 40627/75 Heading D1C Draw-off and take-up apparatus for a circular knitting machine comprises one or more driven draw-off rollers 24, 26, 28 and a freely rotatable take-up roller 22, the fabric 40 being passed from the roller 22 back to and around the roller 26 before being wound on the former and thereby serving to drive the take-up roller 22. As shown three draw-off rollers are provided, the rollers 26, 28 being carried by pivotable arms 30 urged together by springs 34 and separable by means 36, 38. The rollers 24, 26 are geared together. In an alternative arrangement the three rollers are not mounted in line and the fabric returns to the same draw-off roller from which it first passed to the take-up roller. Spring biassed levers 52 carry a roller 54 which bears on the fabric wound on roller 22.
Patent GB-1392460-A (GB)
Title: Electric oven toasters
IPC: F24C7/04
Filed: 1972-07-13
Abstract: 1392460 Thermal switches GENERAL ELECTRIC CO 13 July 1972 [22 July 1971] 40671/74 Divided out of 1392457 Heading H1N The disclosure is the same as in Specification 1,392,457, but the claims relate to an electric oven-toaster having a thermostat whose bimetal senses the oven temperature and controls the oven-toaster heating element, and which includes an antipiatory resistance wire heater wound about a thermal conductor connected thermally to the bimetal.
Patent GB-1480255-A (GB)
Title: Transmitter/receivers
IPC: H04B1/44
Filed: 1974-09-19
Abstract: 1480255 Radio signalling SONY CORP 19 Sept 1974 [22 Sept 1973 29 Sept 1973] 40911/74 Heading H4L In a transmitter/receiver having an automatic gain control path 36, Fig. 1, from a detector 4 to an IF amplifier 3 for supplying an AGC level shift rigid to the IF amplifier in response to a received signal, an oscillator 90, 91 supplies an oscillatory output to a transducer 7 through an audio amplifier 6 in response to detection at 80, 81 of change over of a received signal between the transmitting and receiving states by sensing the AGC level shift signal. As shown the IF amplifier 3 has reverse AGC provided via LPF 36, a detector transistor 81 is normally on and an RC oscillator 90 is normally off. With switch 82 closed a pulse signal (Sb Fig. 2, not shown) is fed to the detector 80 during the period of a received carrier. A capacitor 83, a resistor 84 and the input impedance of the transistor 81 differentiate this pulse signal to produce a signal (2C) at the base of transistor 81 to make transistor 81 turn off at the end of the transmission of the received carrier. An integrating capacitor 85 then provides a pulse (Sd) which turns on RC oscillator 90 so as to produce a sound from speaker 7 for a certain period. When the received signal has been high in level the pause sound from speaker 7 is reproduced twice in succession due to the transistor 90 being driven twice through the active region i.e. from cut off to saturation and back to cut off at the end of the received signal whereas when the received signal has been lower in level the pause sound becomes short due to the transistor 90 not being driven to the saturation level. In a modification (Fig. 3, not shown) in which the IF amplifier is applied with a voltage for forward AGC the detector transistor 81 and oscillator 90 operate opposite to above so that normally the oscillator 90 produces oscillations which are by-passed by a conductive diode controlled by the off state of the transistor 80. Momentary conduction of the transistor 80 on detection of the end of transmission of the received carrier causes diode 86 to turn off and allow the oscillations from oscillator 90 to be reproduced in the speaker 7. In a modified embodiment of this (Fig. 5, not shown) in which the IF amplifier has reverse AGC the start of the received carrier momentarily causes the detector transistor (171) to conduct and turn off a diode (191) which allows oscillations from oscillator 180, which are normally by-passed by the diode (191), to be reproduced in the speaker 7. By switching the input of the detector transistor (171) to a resistor (174) during the period when a carrier is received, the transistor (171) remains conductive and the oscillations from (180) are applied to the speaker 7 so that the receiving station can be called up. In a further embodiment (Fig. 7, not shown) the detector circuit includes a full wave rectifier (289) and a transistor (281) which turns on the oscillator (290) on detecting the end of transmission of a received signal.
Patent GB-1057128-A (GB)
Title: Process for producing polyesters of terephthalic acid
IPC: C08G63/83
Filed: 1963-10-17
Abstract: Polyesters of terephthalic acid are produced from mono or diesters of terephthalic of alkanols having 1-4 C by ester interchange and polymerization with ethylene glycol in the presence of 0.01-0.3% of MgCl2 as catalyst.  The polyester produced may have a softening point in the range 259-230 DEG  C., and may be achieved by (1) incorporating another copolymerizable component with the terephthalic acid ester and ethylene glycol; (2) incorporating a compound having a sulphate or sulphonate radical; (3) effecting polymerization of the polyester under conditions that will bring about autogenous formation of ether bonds.  The copolymerizable component may be an aromatic, aliphatic or cycloaliphatic polycarboxylic acid or a polyhydroxy compound or hydroxy carboxylic acid. The autogenous formation of ether bonds is achieved by temporarily interrupting the reaction e.g. by lowering the degree of vacuum, maintaining the reaction mixture in molten form and then resuming the reaction.
Patent GB-1073227-A (GB)
Title: Azo dyes containing a dicarboximido group
IPC: C07D211/88
Filed: 1963-10-18
Abstract: The invention comprises azo dyes containing an N-dicarboximidoalkyl group of formula <FORM:1073227/C4-C5/1> wherein R3 is a straight or branched chain alkylene group and Y represents the atoms necessary to complete a dicarboximido group.  The ring containing Y has preferably 4 or 5 carbon atoms in addition to the N atom and dicarboximido groups specified in Examples are succinimido, phthalimido, maleimido, citraconimido, nitrophthalimido, bicyclo[2,2,1] - 5 - heptene - 2,3 - dicarboximido, tetrachlorophthalimido, hexahydrophthalimido, 4-carboxy-phthalimido, glutarimido, tetrahydro-phthalimido and chlorotetrahydrophthalimido. The dyes are prepared by coupling a diazotized aromatic or heterocyclic amine with a coupling component containing an N-dicarboximidoalkyl group.  The dyes are used to colour cellulose ester and synthetic polyester materials.
Patent GB-965157-A (GB)
Title: Method and apparatus for applying a liquid surface-protection agent to coiled bodies
IPC: D06B5/26
Filed: 1962-11-01
Abstract: 965,157. Coating-apparatus. KRUPP-DOLBERG G.m.b.H. Nov. 1, 1962 [Nov. 2, 1961], No. 41426/62. Heading B2B. [Also in Division D1] A method of applying a liquid surface-protection agent to a coiled body, e.g. a coil of wire, rope or cable, comprises impregnating the coiled body with the liquid agent in the housing of a centrifuge and then removing excess liquid from the coiled body by centrifuging. In the arrangement shown the housing 3 of a centrifuge is suspended on three pendulum rods 2. A drive shaft 5 with a clutch plate 6 is mounted in a bearing tube 4 and is driven by motor 7. A support member 8 with coils of wire 9 to be treated rests on the clutch plate 6. The housing 3 can be closed by hinged cover 10 and below the housing is installed a pump 11, the suction pipe 12 of which penetrates into oil reservoir 13 and the pressure pipe 14, with compensator 15 leads into the housing 3. An overflow pipe 16 is fitted inside the housing 3 and leads back to the reservoir 13. 17 indicates a hydraulic tipping device for use in loading and unloading the wire coil. In use support member 8 with coils 9 thereon is introduced into housing 3 by crane 18, cover 10 is closed and the pump switched on by means of some programme control means. The pump delivers impregnating oil from reservoir 13 to housing 3, excess oil overflowing through pipe 16 to reservoir 13. After the required treatment time the programme control switches off pump 11 and oil from the housing 3 flows back to reservoir 13. The support member 8 is then set in rotation by switching on motor 7, excess oil is centrifuged off the coil of wire 9 leaving only a thin film thereon, and drains back to reservoir 13. The centrifuge is then stopped, cover 10 opened and the support 8 with coils 9 removed from the housing.
Patent GB-1316140-A (GB)
Title: Closable bags
IPC: B65D33/06
Filed: 1970-08-28
Abstract: 1316140 Bags UNIFOS KEMI AB 28 Aug 1970 [29 Aug 1969] 41558/70 Heading A4G [Also in Divisions B5 and B8] A bag formed from gussetted tubular material includes a foldable filling passage 7 and a flat member 13 which is held in a pocket 10 defined by welds 4-6 and which includes a hand-hole 15 and lugs 16 aligned with corresponding apertures in the pocket 10. The bag is closed Fig. 2 (not shown), by folding the passage 7 so that two holes 11 in the passage 7 are aligned with the lugs 16 which are then passed through the holes 11 and folded against the passage. The welds 4-6 are thermo-welds when the tubular material comprises LD-polyeltylene or polyvinyl chloride. Alternatively the tubular material may comprise plastics coated paper or fabric.
Patent GB-1422428-A (GB)
Title: Electrical socket
IPC: H01R24/76
Filed: 1973-09-04
Abstract: 1422428 Two part couplings HADELEC Ltd 31 July 1974 [4 Sept 1973] 41597/73 Heading H2E A mains socket comprises a first insulating block 8, held in a box 1 by clips 15, connected to electrical wiring, and adapted to receive a plug 18 which is held in a cover 2 attached to the box by screws 4, the plug in the cover being connected to a second socket 19 adapted to receive plug pins 20.
Patent GB-1199967-A (GB)
Title: Data Input Cards
Inventor: CILINO FRANK STEPHEN
IPC: G06K19/04
Filed: 1967-09-13
Abstract: 1,199,967. Record cards. WESTERN ELECTRIC CO. Inc. 13 Sept., 1967, No. 41785/67. Heading G4M. A record card e.g. for an automatic telephone call transmitter has its leading edge 22 shaped so as to sequentially move the sensing elements 24 of a reader from a first position to a second position as the card is inserted in a direction transverse to the row of elements 24. The elements 24 may be spring-biased fingers operating contacts and mounted in a common bar which allows a limited amount of deflection of the fingers transverse to their axes. As the card is driven out of the reader, two of the fingers engage in holes representing a dummy character, this serving to ensure that all the fingers assume the correct angular attitude for sensing the following code characters.
Patent GB-1254126-A (GB)
Title: A light activated flashing lamp
Inventor: CHAN YUEN YING
IPC: G08B5/38
Filed: 1969-08-22
Abstract: 1,254,126. Controlling lighting photoelectrically. YUEN YING CHAN. Aug. 22, 1969, No.41918/69. Heading G1A. A flashing warning lamp is controlled by two detectors connected such that the lamp flashes only when a particular one of the detectors receives illumination and the other does not. As described the detectors are photo-resistors. The said 'one' detector 2 is positioned on the side of the lamp and is in use directed to receive radiation from an oncoming vehicle and said other detector 3 positioned on top of the lamp receives ambient radiation and prevents operation of the lamp during daylight. The lamp 14 is powered via an oscillator, comprising transistors 10 and 11, which is normally biased off by a potential divider 7a and 7b. If a transistor 5 is not cut off by daylight falling on the detector 3, detector 2 when illuminated by the headlights of an oncoming vehicle switches the transistor 5 to conduction causing a capacitor 6 to be charged. While the capacitor is charged the potential offered by the divider rises to a level at which the oscillator operates causing the lamp to flash. The capacitor ensures that the lamp flashes for a minimum duration of 10 seconds.
Patent GB-1330573-A (GB)
Title: Optical resolution of dl-tryptophan derivatives
Filed: 1971-09-08
Abstract: 1330573 Resolving tryptophan AJINOMOTO CO Inc 8 Sept 1971 [12 Sept 1970] 41994/71 Heading C2C DL-Tryptophan monohydrohalides are resolved by contacting a saturated or supersaturated solution of the DL-tryptophan monohydrohalide, containing the corresponding free hydrogen halide (hydrohalic acid), with crystals of at least one of the enantiomorphs, and separating the resulting grown crystals. Conventional seeding and crystallization procedures may be used, including the use of both enantiomorphs simultaneously as seed crystals but of different mesh size, the resulting crystals being separable because of their different sizes; and the passage of the solution through a vessel containing seed crystals of one enantiomorph and then through another vessel containing seed crystals of the other enantiomorph. Crystals of tryptophan monohydrochloride Trp.HCl and hemihydrochloride (Trp) 2 .HCl are obtained from aqueous HCl solutions of tryptophan.
Patent GB-1136291-A (GB)
Title: Improvements in, or relating to, goods-carrying stillages and road vehicles for transporting same
Inventor: CHAPMAN VICTOR ALFRED
IPC: B60P1/64
Filed: 1965-10-05
Abstract: 1,136,291. Transferring containers to vehicles. ABELSON MOTORS Ltd. 5 Oct., 1966 [5 Oct., 1965; 10 Dec., 1965], Nos. 42133/65 and 52649/65. Heading B8E. A stillage 5 has a body 7 on a frame 6 provided at each corner with legs 15 pivoted by shafts 16 to move from the stowed to ground supporting positions shown. The shafts slide transversely in the frame and a tongue 28 engages a slot 29 to hold the legs in the inward stowed position. Pneumatic bellows 31 controlled manually by a valve mounted on the frame and actuatable separately at each end of the frame are mounted under the stillage platform 12 above a pivoted carriage 33 so that on expansion of the bellows a roller 35 engages the vehicle platform 3 to raise the frame and container relative thereto to allow the legs to be moved to the ground engaging position. A spring 45 acts to restore the carriage on deflation of the bellows. The bellows are mounted symmetrically of the longitudinal centre line at either end of the frame. The frame instead of being attached to the container as shown may be a separate unit inserted between the vehicle platform and container or may be part of the vehicle.
Patent GB-1164658-A (GB)
Title: Pneumatic Tobacco Feed System
IPC: B65G53/56
Filed: 1967-09-18
Abstract: 1,164,658. Feeding tobacco. AMERICAN MACHINE & FOUNDRY CO. 18 Sept., 1967 [19 Sept., 1966], No. 42344/67. Head ing A2C. [Also in Division B8] In a pneumatic tobacco feeding system, tobacco is fed from a feed-in station 10 to two main feed conduits 12 that are connected via branch outlets 4 of serially connected pneumatic two-ways switch valves Bl, B2 . . . B3 to discharge units S of cigarette making machines C1, C2 . . . . Cn and thence via a manifold 14 to a suction and filtering unit 11. The valves Bl, B2 . . . B3, such as those disclosed in Specification 1164659 are automatically switched to a particular outlet 3 or 4 by the application of suction to that particular outlet. A programmed call for tobacco by the discharge unit S of any one machine C1, C2 . . . Cn thus automatically switches its respective valve B1, B2 ... B3 (except for the last machines Cn) to its outlet 4 and switches all other valves Bl, B2 . B3 upstream thereof to their outlets 3.
Patent GB-898069-A (GB)
Title: Method of relieving residual stresses in light metal articles
IPC: C22F1/04
Filed: 1959-12-15
Abstract: Light metal articles i.e. of aluminium or magnesium or their alloys, are stress relieved by chilling to below -100 DEG F. and then directing a current of a condensable vapour at a temperature not lower than the boiling point of water over the entire surface at a velocity sufficient to sweep away droplets of liquid condensate. The articles may be chilled in dry ice, a mixture of dry ice with acetone, ether, or thrichlorethylene, liquid isopentane, liquid air, liquid nitrogen or liquid helium.  When using a liquid gas it is preferable to cool preliminarily to -100 to -200 DEG F. in some other bath.  Such vapours as steam, alcohol, glycerine, glycols and their alkyl substituted products may be used, and the articles are exposed to the vapour at over 240 DEG F. for less than one minute. Precipitation hardenable alloys are chilled before the inception of hardening.
Patent GB-1064487-A (GB)
Title: Improvements in or relating to thereproduction of information from a record medium
IPC: H04N3/36
Filed: 1964-04-29
Abstract: 1,064,487. Television. COLUMBIA BROADCASTING SYSTEM Inc. April 29, 1964 [Dec. 12, 1963], No. 42588/66. Divided out of 1,064,486. Heading H4F. In an arrangement for providing picture and synchronizing information signals from a continuously moving film strip carrying a succession of frames of picture information each with associated synchronizing indicia, the film strip 124 is optically scanned with a line scan of given periodicity by means of a CRT 128 controlled from a free-running horizontal scan generator 130 to generate picture information signals and synchronizing signals, vertical synchronizing pulses being derived from the synchronizing signals. In this arrangement there is no need for synchronism between the film movement and film scanning. The synchronizing indicia or markers may comprise a series of regularly spaced opaque and transparent areas across the film strip between each frame, Figs. 2 and 3 (not shown), which when scanned produce a pulse signal of given frequency. The video signal is produced by photomultiplier 134 which detects the light from the scanning light spot that is transmitted through the film and is fed to a mixer 138. Also applied to the mixer is the horizontal blanking and synchronization produced from horizontal scan generator 130 and the vertical blanking and synchronization produced by a tuned amplifier 140, which is tuned to a frequency equal to that of the signal produced by the light spot sweeping the synchronization markers, detector 142, clipper amplifier 144 and monostable multivibrator 146. To prevent screen burn of the CRT by the scanning beam the location of the line scans may be slowly varied by scans of triangular waveform generator 132. A sound track may be provided on the film of variable density or variable area.
Patent GB-926058-A (GB)
Title: A machine guard
Inventor: ANDERSON WILLIAM ARTHUR
IPC: B27G21/00
Filed: 1960-12-12
Abstract: 926,058. Machinery guards. DANCER & HEARNE BROS. Ltd. Dec. 12, 1961 [Dec. 12, 1960], No. 42665/60. Class 80 (4). A guard for a spindle moulding or like machine having a circular cutter revolving on a vertical axis comprises a top flap or cover 17 located above the cuttter, the flap or cover carrying a front plate 16 which is adjustable forwardly and rearwardly, and up and down in relation to the flap or cover 17, and side shields 12 mounted so as to be capable of adjustment at least forwardly and rearwardly. The front plate 16 is attached to the flap 17 by slotted bars 18 and pivoted angle-brackets 20 carrying bolts 21 adapted to be adjustably positioned in slots 22. The side shields 12 are curved and have bases 12a adjustably secured to a baseplate 13 by bolts 23 located in slots 24, 25, the plate 13 being adjustably secured to a table T by bolts 14. The flap 17 is hinged to an extraction ducting head 10. In a modification, the flap 17 carries adjustable side shields which are normally located above the flap but can be dropped down for use as alternative side shields.