baber/WOPTO huggingface dataset:
Patent GB-1182036-A (GB)
Title: Pressure Controller
IPC: G05D16/20
Filed: 1968-07-31
Abstract: 1,182,036. Pressure controller. SCHWIEN ENG. Inc. July 31, 1968 [Aug.21, 1967], No. 36619/68. Heading G3R. A controlled pressure conduit is supplied from a high pressure source 39 and a low pressure source 39<SP>1</SP>, the pressure in the controlled conduit being maintained at a set value by two electrically operated valves, one connected to the high pressure source 39 and one to the low pressure source 39<SP>1</SP>, the valves being operated simultaneously in opposite senses in response to an electrical error signal derived from two signals generated by a manometer 10, 11, 13, connected to the controlled pressure conduit by pipe 26. The manometer comprises a vertically adjustable mercury reservoir 11, 16 connected to a reference vacuum pressure and connected by pipe 12 to a mercury reservoir 13 with an adjustable capacitor plate 19 carried by a diaphragm 20. A fixed mercury reservoir 10 is connected through on-off valve 29 to reservoir 13. Reservoirs 10 and 11 are earthed and provided with capacitor plates 15, 16 respectively, connected to a high accuracy gauging system 35 in the form of a bridge, whilst the capacitor plate 19 of reservoir 13 is earthed and its co-operating plate 17 is connected to a low accuracy gauging bridge 32. When reservoir 11 is driven to adjust the set pressure, valve 29 is closed, and a large signal is generated in line 36 by low accuracy system 32. This signal is fed to a lead amplifier 41 through capacitor 45 and a direct coupled amplifier 42, the resultant error signal being fed to an amplifier 43 which drives energizing coils of the two electromagnetic valves of controller 40. When the error signal falls below a predetermined value valve 29 is opened manually or automatically and contacts 38 changed to the position shown. The low accuracy system 35 then supplies amplifier 41 and the high accuracy system amplifier 42. An automatic gain adjustment 46 is provided which comprises a bellows sensitive to the controlled pressure driving an adjustable potentiometer supplying an amplifier. The amplifier drives light bulbs in feedback circuits of the amplifiers 41, 42 which illuminate photo-sensitive resistors. The arrangement is such that the gain is constant over a first range, logarithmic over a second range and constant above a certain pressure. The electromagnetic valves of the low and high pressure sources are supplied through pressure regulators connected in addition to the controlled pressure to maintain mass flow for a given valve opening more constant.
Patent GB-1572183-A (GB)
Title: Cyclopropane carboxylic acid ester synthesis and intermediates therefor
IPC: C07C69/757
Filed: 1975-09-05
Abstract: Compounds of the formula VI in which the radicals have the meanings given in Claim 1 are prepared by eliminating the acid R<1>OH from a compound of the formula V in which R<1> denotes a radical derived from a strong acid R<1>OH. The compounds of the formula V are intermediates for the preparation of insecticides. <IMAGE>
Patent GB-873630-A (GB)
Title: Improvements in and relating to direct current amplifiers
IPC: H03F3/36
Filed: 1957-11-22
Abstract: 873,630. Valve amplifying circuits. INDUSTRIAL NUCLEONICS CORPORATION. Nov. 22, 1957 [Dec. 18, 1956], No. 36827/60. Divided out of 873,629. Class 40(6) A direct current amplifier comprises first and second electronic devices 24, 25 each having electron emitter and electron collector discharge electrodes and a control electrode; a bridge circuit having two arms in parallel across a DC supply, the first arm comprising a voltage divider impedance having two potentiometer taps separated by a portion of the impedance, the first tap being connected to one of the discharge electrodes 50 of the first electronic device and one of the two taps being a variable potentiometer tap 27, the second arm comprising the discharge electrodes of the second electronic device 25 and an impedance 31, 32 having an intermediate tap 33; and a load impedance 35 connecting the second potentiometer tap to the intermediate tap. The input is applied to the control electrode 51 of the electron device 24 and the output is taken between the second potentiometer tap and the intermediate tap. The amplifier described forms part of a measuring system (Specification 873,629) used as a transmission type of thickness gauge. The output from the detector 10 is fed through a high resistance 15 to provide the input voltage for the amplifier, and the load impedance 35 of the amplifier includes a meter 34 in series with it and a sensitivity control 36 for the meter 34. A biasing circuit 16 is also included in the input circuit to oppose the input voltage to give a zero reading on the meter 34. The anode 52 of the valve 24 is connected to the control grid 54 of the valve 25, and the anode of the valve is connected back via resistor 38 to the screen of the valve 24 thus providing positive feed back to increase the amplifier gain. The anode load resistor 29 of the valve 24 is shunted by a capacitor 30 so that the time constant of this RC combination forms a stabilizer in the feed back loop to prevent large changes on the grid of valve 25.
Patent GB-1502005-A (GB)
Title: Apparatus and method for treating a textile web
IPC: F26B13/28
Filed: 1975-09-08
Abstract: The treatment takes place by means of a vaporous or gaseous medium flowing out through a nozzle (1) at at least approximately sonic speed. The textile material (5) to be treated is guided past the mouth surface of the nozzle (1), extending over the width of the textile material, by means of a progressive-motion element (6, 7) arranged respectively in front of and behind the nozzle (1) in relation to the treatment zone. The vaporous or gaseous medium at the same time flows through this material (5). The textile material (5) is guided past the nozzle (1), the wedge-shaped outer contour of which forms an angle of approximately 60 DEG , in such a way that a particular textile-material part (5) passing this nozzle (1) rests on the nozzle mouth and is pressed against this. The textile-material parts running towards the nozzle (1) and those running away from this nozzle with a change in their direction of movement form an angle which is larger than the wedge angle of the nozzle outer contour. The effect of the flowing medium on the textile material is increased substantially as a result of this measure. <IMAGE>
Patent GB-830942-A (GB)
Title: Dimerization process
Inventor: CARLEY DAVID ROSS
IPC: C07C57/13
Filed: 1956-12-03
Abstract: A conjugated polyene having between 4 and 16 carbon atoms or a vinyl aromatic hydrocarbon is dimerized by reaction with a finely dispersed alkali metal having a particle size not greater than 50 microns dispersed in at least 300% of an aliphatic solvent consisting of an ether (as defined) acetal or tertiary amine in the presence of between 0.0001 to 10% of a diaryl ketone, both percentages being based upon the weight of the alkali metal, the reaction medium being maintained at a temperature below about 50 DEG  C., said polyene or vinyl aromatic hydrocarbon being employed in an amount not exceeding 1 mol. per mol. of alkali metal.  The product is a dialkali metal adduct.  Specified conjugated polyenes are butadiene, pentadiene, hexadiene, octadiene, decadiene, pentadecadiene, isoprene, 2-ethyl butadiene, dimethyl butadiene, tertiary butyl butadiene, 2-methyl pentadiene, 3-methyl pentadiene, 2-hexyl pentadiene, 2-methyl-octadiene-1,3; 2-methyl - octadiene - 2,4; 2 - ethyl decadiene-1,3; 3 - ethyl - decadiene - 2,4; allo - ocimene, 1 - phenyl butadiene, 2 - phenyl - butadiene, 1,4-diphenyl butadiene and naphthyl butadiene.  The alkali metal (preferably sodium) may be dispersed in an inert solvent such as iso-octane, heptane, decane kerosene or di-n-butyl ether; if desired, the ether, acetal or tertiary amine may be used.  Specified diaryl ketones include benzophenone, phenyl naphthyl ketone, di-naphthyl ketone, phenyl biphenyl ketone, di-biphenyl ketone, phenyl terphenyl ketone, biphenyl naphthyl ketone, diterphenyl ketone and fluorenone.  A detailed list of suitable ethers, acetals and amines is given.  The reaction is conducted in an inert atmosphere, e.g. nitrogen in the absence of moisture.  The alkali metal adduct may be carbonated by pouring on to dry ice to give dicarboxylic acids having two more carbon atoms in the molecule than the dimer, or reacted with compounds containing carbonyl, thionyl or nitrile groups to give other compounds; for example, SO2 gives di-sulphinic acids, formaldehyde or epoxides give diols and cyanogen chloride gives dinitriles.  The adduct may also be reacted with alkylaryl, acetylenic, nitrile and cyclodienyl compounds to effect transmetalation.  The following are prepared in the examples: (1) disodiooctadienes and sebacic acid, 2-ethyl suberic acid, 3-ethyl suberic acid and 2,5-diethyl adipic acid; (2) decadienediols; (4) benzyl sodium (by transmetalation with toluene) and phenyl acetic acid; (7) C12 dicarboxylic acids; and (8) C14 dicarboxylic acids.
Patent GB-1508040-A (GB)
Title: Lining for tunnels
IPC: E21D11/08
Filed: 1976-12-08
Abstract: 1508040 Tunnel linings E F GOLDSBY 8 Dec 1976 [9 Sept 1975] 36943/75 Heading E1F A tunnel liner for use in conjunction with a tunnel lining composed of concrete blocks 2, comprises a sheath of plastics material formed from sections 1, the peripheral edges of which are formed into inflatable tubes 3 to expand the sheath section into the tunnel. Each sheath section 1 is of greater length than a block 2 and preferably comprises an outer ply 1a of impervious flexible plastics and an inner ply 1b of a non - stretchable yet flexible plastics material which may be reinforced with fibre glass or steel strip. Adjacent blocks 2 in a ring may be formed with cooperating recesses 2a and ribs 2b, and may be keyed in position by a key block 5 having inclined longitudinal ribs 5a. The lining may be assembled using a tunnelling shield 11. After advancing the latter, a sheath section 1 is erected adjacent the previous ring of blocks 2 and so that it overlaps the previous sheath section 1. The next ring of blocks 2 can then be built within the newly erected section 1, a jack 10 or 10a being used to keep the segments 2 in place. Jacks 12 are extended to advance the shield 11 and then to push home the key block 5. If desired blocks 2 in adjacent rings may be secured by longitudinal tie bolts 6.
Patent GB-1271281-A (GB)
Title: Coating of webs by freeze-drying and products therefrom
IPC: D21H25/06
Filed: 1969-07-23
Abstract: 1,271,281. Freeze drying of coatings. ETHYL CORP. 23 July, 1969 [31 July, 1968], No. 37028/69. Heading B2E. [Also in Division Dl] A web e.g. of paper or plastic, is coated by applying to one or both sides a liquid vehicle containing at least one polymer reducing the temperature of the applied coating to freeze and solidify the coating, reducing the pressure to remove the liquid carrier by sublimation and returning the web to ambient temperature and pressure. The sublimation may be effected at 50-200 microns Hg pressure by infra red or microwave radiation, dielectric heating or by passing the web over a heated surface. Suitable polymeric materials include starch, oxidised starch, dextrin casein, soya protein, polyvinyl alcohol, styrene/butadiene or styrene/maleic anhydride copolymers, acrylic polymers or emulsified waxes and these may be employed in such vehicles as water or benzene at solids content of 5-60% wt. Pigments may also be included in the coating compositions. The coating may be strengthened by employing a mixture of polymers, by including thermoplastic emulsions in the coating and heating the web as it emerges from the vacuum chamber or by subjecting the coating to a reactive bond forming vapour after the coating has dried.
Patent GB-1066446-A (GB)
Title: Electrical semiconductor arrangement
IPC: H01L25/07
Filed: 1963-09-20
Abstract: 1,066,446. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. Sept. 20, 1963 [Sept.21, 1962], No. 37080/63. Addition to 1,020,151. Heading H1K. In a device comprising an element of silicon, germanium or an intermetallic compound housed in a cavity in an annular insulating, e.g. ceramic ring metal cover-plates attached to opposite planar faces of the ring serve both to close the cavities and as terminals for the elements. The ring or plates are provided with means such as a raised rim on the ring or an upturned edge on the plate for ensuring that they are positively located with respect to one another. Typically (Fig. 1) there are a number of cavities in the ring each housing a rectifier element. The rings may be held together in a stack by a bolt passing through the annulus to provide a series arrangement.
Patent GB-305726-A (GB)
Title: Method and apparatus for drying and conditioning photographic and cinematograph films or bands
IPC: G03D15/02
Filed: 1927-08-08
Abstract: 305,726. Tanatar, M., and Kokisoff, D. Aug. 8, 1927. Divided on 305,681, [Class 98 (ii), Photographic processes &c.]. Aug. 8, 1927: Drying materials in long lengths.-In apparatus for drying and conditioning photographic and cinematographic films, the film passes first through a preliminary drying vessel 19 supplied with a current of filtered air and which may also contain wiping devices. It then passes through a chamber partitioned into compartments 21, 22, 23 through which heated and filtered air is forced, as by fans 27, 28 and a heated coil 29, in a direction opposite to that of the film travel, each compartment being also fitted with a maximum and minimum thermometer operating in conjunction with devices for maintaining a constant temperature in each compartment. Manually controlled air inlets may also be provided for assisting in the temperature regulation. The moisture of the air supply to the chamber 23 may be controlled by a hygrometer. The film then passes through a chamber 31, also provided with a hygrometer, which controls the supply of moisture to the air circulated through the chamber so as to condition the film, which then passes through a chamber 33 fitted with wiping devices 34 to remove any spots, and is reeled on drums 35. The film feed rollers are driven by a common shaft from a motor. Two films may be simultaneously treated.
Patent GB-1155883-A (GB)
Title: A process of Sintering Aluminum Based Powders and the product thereof
Inventor: STORCHHEIM SAMUEL
IPC: C22C1/04
Filed: 1966-08-18
Abstract: 1,155,883. Sintered Al-Cn-Mg alloys. ALLOYS RESEARCH & MFG. CORP. Aug. 18, 1966, No. 37118/66. Heading C7D. The shrinkage of powders consisting of Al and 1-10% by weight Cu during sintering is regulated by the addition of 0À05 to 20% by weight Mg in the form of powdered Mg or Al- Mg alloy. The Al powder may be in the form of fine or coarse powder, needles, fibres, shot, pellets, or scrap turnings. The Mg added should be prepared by atomization in helium to prevent formation of oxide films. The powder mixture is either cold pressed and sintered or hot pressed or cold or hot rolled and then sintered. With sufficient Mg added; the shrinkage is completely counteracted and net expansion results.
Patent GB-1094271-A (GB)
Title: Guides for die sets
Inventor: COLEY SAMUEL ERNEST
IPC: B21D37/10
Filed: 1963-09-21
Abstract: 1,094,271. Subpress mechanisms. ROTOLIN BEARINGS Ltd. Dec. 10, 1964 [Sept. 21, 1963], No. 37227/63. Headings B3Q and B3W. [Also in Division F2] A die set comprises a bush 12 secured to the punch holder 10, a guide pin 13 secured to the die holder, and a bearing including a case 14 and balls 15 acting between the pin and bush. As the punch rises, the pin 13 becomes disengaged from the cage 14, which is prevented from falling from the bush by a circlip 21. During decent of the punch, the cage is lowered over the pin but does not retract significantly into the bush until this passes on to the pin and engages some of the balls 15 already engaged by the pin. A spring 23 may bias the cage towards its extended position. The balls in the lowest ring of the metal or plastics cage 14 may be staggered so that all are not engaged simultaneously by the pin, thus reducing the resistance to entry.
Patent GB-774147-A (GB)
Title: Improvements in or relating to swing grinding machines
Inventor: STOCH CZESLAW MICHAL
IPC: B24B55/06
Filed: 1954-12-23
Abstract: 774,147. Confining dust generated by grinding wheels. BRITISH STEEL CASTINGS RESEARCH ASSOCIATION Dec. 15, 1955 [Dec. 23, 1954], No. 37294/54. Class 8(2) The hood 8 shrouding the wheel 7 (not shown) of a swing frame grinder is connected by a duct 13 to the inlet of an electrically driven fan 14 which discharges away from the wheel and into a booth 1 through which air is drawn by a suction fan (not shown). As shown the fan 14 is driven by a motor 9 which drives the wheel through belting 10. In a modification the fan is driven by a separate motor and may be located in front of the booth inlet 2. In a further modification the suction duct com-. prises the.beam 6 of the grinder frame. Specification 742,456 is referred to.
Patent GB-1291902-A (GB)
Title: Alphanumeric character display apparatus and method
Inventor: BAND IAN T
IPC: H03K21/08
Filed: 1970-08-03
Abstract: 1291902 Display or printing matrix control HEWLETT-PACKARD CO 3 Aug 1970 [18 Sept 1969] 37436/70 Heading G4H The column connection to a matrix of display lamps or printing elements are arranged in groups, with all column connections of a group being energized simultaneously and all groups in sequence. In the arrangement of a fourcharacter display shown in the figure, each 4 x 7 matrix 51-54 has the column connections arranged in two groups A and B, necessitating the electroluminescent diodes 55, at selected points of the matrix, to be selectively connected to 10 row conductors 57. Counting-pulses from an input are fed for a counting period via gate 11 to a 4-decade counter 9 whose output is transferred at the end of the period via gates 15 to digit stores 21 to 24 for display. A column scanner 19 energizes a corresponding one of lines 31 to 34 for each digit in the store to pass a binary signal of the digit to a generator 17 which selectively energizes one or more of the row conductors 57. Synchronously with the digit periods the column scanner energizes the corresponding pair of column connections A, B, each for half a period in sequence, whereby the digit is displayed. The selection of energized row conductors is changed on the change-over from A to B columns if the character being displayed is not a symmetrical one.
Patent GB-851497-A (GB)
Title: Production of silanes
Inventor: JACK JAMES
IPC: B01D19/04
Filed: 1957-12-04
Abstract: Organosilanes are prepared by reacting organopolysiloxanes with organoaluminium compounds of the formula RaAlX3-a, where a is 1 to 3 R is alkyl or aryl and X is halogen, hydrogen or alkoxy, and distilling off the silane.  Specified aluminium compounds are trimethyl aluminium, methyl aluminium dichloride and sesquichloride, dimethyl aluminium chloride, and ethyl aluminium sesquichloride and sesquibromide.  Aluminium halides may be added.  The organoaluminium compounds may be prepared in situ. The temperature is preferably from 120 DEG  to 400 DEG C. and the reaction is preferably effected under pressure.  Inert solvents, e.g. hydrocarbons, may be present. Examples are given in which the siloxanes comprise (1) to (4) a composition of silica filler with a gum which is composed of dimethylsiloxane or a copolymer of dimethyl and diphenyl siloxanes, (5) octamethyl cyclotetrasiloxane (c) trimethylsilyl end-stopped dimethylsiloxane fluid, (7) solid hydrolysis produce of MeSiCl3, (11) scrap siloxane elastomer, (15) octaphenylcyclotetrasiloxane. Specification 799,907 is referred to.
Patent GB-875509-A (GB)
Title: Improvements in hydraulically actuated pumps
IPC: F04B43/067
Filed: 1958-11-25
Abstract: 875,509. Diaphragm pumps. MILTON ROY CO. Nov. 25, 1958 [Nov. 27, 1957], No. 37996/58. Drawings to Specification. Class 102(1). In a hydraulically actuated diaphragm pump a spring loaded relief valve is provided between the liquid actuating chamber and a reservoir and at the end of the suction stroke of the pump the valve is opened mechanically from the actuating mechanism. The link between the actuating mechanism and the valve opening mechanism may be electrical. The stroke of the actuating mechanism may be varied. Specification 825,229 is referred to.
Patent GB-1434525-A (GB)
Title: Yarn heater
IPC: D02J13/00
Filed: 1972-08-15
Abstract: 1434525 Yarn heaters, rollers PLATT SACO LOWELL Ltd 15 Aug 1973 [15 Aug 1972] 38027/72 Headings DID and D1F A yarn heater comprises a heater body 3 positioned between first and second driven rollers 1, 2, the first driven roller 1 being formed with two portions 4, 5 of different diameters, a nip roll 7 being provdied to cooperate with one of the portions 4, 5 to define a nip through which yarn 11 is positively advanced over the theater body 3 for the first time to the second driven roller 2. The yarn is preferably a textured yarn passing to the heater for modification of the crimp and the yarn passes in several loops around the rollers 1, 2 and heater body 3 which heater body preferably comprises two convex heater surfaces on opposite sides of the body. The yarn loops are separated by ceramic combs 19 or the rollers 1, 2 and/or heater body 3 may be grooved. The said one portion 4 is preferably of larger diameter than the other portion 5, and the portion 5 is of the same diameter as the second roller 2. Suitable drive belts are provided for the rollers 1 and 2. The two portions 4 and 5 of the roller 1 may be integral and rotate together. Alternatively, the roller 1 can comprise two portions which are rotatable independently suitable variable speed drive means being provided. The rollers I and 2 are arranged to overhang the heater body 3 at one edge so that the final loops of yarn are clear of the heater body and allowed to cool. The peripheral speeds of the rollers 1 and 2 are suitably chosen to give the desired underfeed or overfeed of the yarn 11 in its first passage over the heater body. In a further embodiment, two sets of first and second rollers and associated nip rollers and drive means, are provided for each heater body, the rollers being arranged in mirror-image about the heater body.
Patent GB-875536-A (GB)
Title: Improvements in or relating to fluid-pressure regulating power cylinder devices
IPC: G05D16/10
Filed: 1957-12-06
Abstract: 875,536. Fluid-pressure servomotor-control systems; valves. REIS, S. Dec. 6, 1957 [Dec. 6, 1956], No. 38103/57. Class 135. Fluid supplied to the inlet 2 reaches an outlet 4 via chambers 11, 12, a duct 13 in a piston 6 and a non-return valve 14; when the outlet 4 is closed by means of a cock, not shown, in the line connected thereto or the pressure rises in the latter, the pressure increase in chamber 12 causes downward motion of piston 6 and an associated piston 8 against a spring 16 until the latter piston abuts a plug 20, in which position a port 24 is closed by piston 6. The pressure continues to increase in chamber 12 until it is sufficient to move the piston 6 relative to piston 8 in opposition to a spring 10, whereupon a port 25 is opened to enable pressure fluid to act on an adjustably spring-loaded piston 19 and withdraw plug 20 so that spring 10, which is stronger than spring 16, forces the piston 8 down until it uncovers a port 3 through which pressure in chamber 11 is relieved ; the pressure in chamber 12 is maintained because valve 14 closes the duct 13. When the outlet 4 is opened or the pressure therein falls below a given value the pistons 6, 8 return to the positions shown closing ports 3, 25 and opening port 24, so exhausting the fluid which previously acted on piston 19. The outlet 4 may be connected to an accumulator and the rod 7 of piston 6 on which piston 8 is slidable may be extended through the lower end of the casing 1 to actuate a power user, not shown.