baber/WOPTO huggingface dataset:
Patent GB-1502271-A (GB)
Title: Sterilising process
IPC: A61L2/24
Filed: 1974-06-05
Abstract: 1502271 Sterilization DRAYTON CASTLE Ltd 2 June 1975 [5 June 1974] 24887/74 Heading A2D A method of sterilising a load in a sealed vessel comprises admitting steam into the vessel, removing air and condensate therefrom, and, during at least part of the sterilising cycle, mixing the air removed from the vessel with the condensate and recirculating the condensate/air mixture through the vessel. The mehtod may include the further steps of cooling the condensate after completion of the sterilising period and recirculating the cooled condensate to cool the load in the vessel. The sterilisation period should be long enough to sterilise the condensate/air mixture. The method may be carried out in the apparatus shown in Fig. 1 which comprises pressure vessel 1 containing plastics bags 2. Steam is admitted via valve 4 and condensate collected in pressure vessel 5. A steam trap 6 is provided in the air line 5a to separate any condensate from recirculating air, which air is mixed with recirculating condensate at a point closely adjacent the suction side of a pump 9. The resulting condensate/air mixture is passed to vessel 1 and preferably sprayed onto the plastics bags therein. A heat exchanger 11 is provided to reduce the temperature of the condensate and thus the plastics bags. The bags may be arranged on trays as indicated in Fig. 3 (not shown), each tray being inclined slightly to the horizontal so that condensate passes over the bag in the uppermost tray and drains away and cascades onto the bags in the tray below. Each tray may be provided with apertures.
Patent GB-1533663-A (GB)
Title: Imidyl-benzene-dicarboxylic and-tricarboxylic acid derivatives
IPC: C07D209/76
Filed: 1976-06-16
Abstract: 1533663 Curing epoxy resins; polyesteramide-imide CIBA GEIGY AG 16 June 1976 [18 June 1975] 24887/76 Headings C3B and C3R [Also in Division C2] A curable mixture, suitable for the production of mouldings, impregnated products, coatings and adhesive bonds, comprises (a) a polyepoxide compound, (b) as the curing agent, at least one compound of the formula wherein A denotes a radical of the formula R 1  and R 2  independently denote hydrogen, bromine or chlorine; n is 1 or 2 and Z is a radical of the formula wherein R<SP>11</SP> 3  represents a hydroxyl group, an optionally substituted phenoxy group or a (C 1 -C 18 ) alkoxy group, and (c) optionally at least one vinyl compound. In an example (VI) there is disclosed the preparation of a polyesteramide - imide by reaction of 5 - maleimidyltrimellitic anhydride - chloride first with 3 - aminophenol and then with isophthalite acid dichloride in the presence of triethylamine.
Patent GB-707923-A (GB)
Title: Apparatus for feeding sliver from rolls to cards, drawing frames, spinning frames orthe like
Inventor: FRASER HUGH
IPC: D01G15/40
Filed: 1951-10-25
Abstract: 707,923. Sliver feeding apparatus. FRASER & SONS, Ltd., D. Sept. 5, 1952 [Oct. 25, 1951], No. 24945/52. Classes 120(1) and 120(2) In apparatus for feeding sliver from rolls to drawing frames &c. the rolls of sliver are placed in juxtaposition in a cradle constituted by parallel rollers supported in bearings in stationary mounting members which are solidly connected solely by a single space bar parallel to the cradle-forming rollers and supporting a series of partitions spaced apart to accommodate a sliver roll between successive partitions of the series. As shown, cradle-forming rollers 3 for carrying a sliver roll 9 are supported in self-aligning bearings 4 in stands 5 and 6 spaced apart by a spacer bar 1. Partitions 2 are supported on the spacer bar 1 and are spaced apart thereon by distancepieces 11. The partitions 2 are rotatable about the bar 1 and have a depending limb 10 which rests on the floor. In another embodiment, the spacer bar consists of an angle-iron and the partitions are formed of tubing bent to inverted U-shape and clamped to the upstanding flange of the angle-iron.
Patent GB-425170-A (GB)
Title: Folding hood for automobiles or carriages
IPC: B60J7/14
Filed: 1933-09-08
Abstract: 425,170. Vehicle opening-tops. HIGGINS, C. G., 32, York Street, Portman Square, London. Sept. 8, 1933, No. 24952. [Class 108 (i)] A folding hood or roof comprises a rear panel, two or more mutually hinged roof panels, the rear one being hinged to the rear panel and the front one adapted to be hinged to the windscreen, side flaps hinged to the lateral edges of the roof panels, and, if desired, side panels hinged to the lateral edges of the rear panel. The rear panel 1 comprising a main portion 3 with side wings 4, 5, is hinged to the body at 2 as shown. A hinged roof panel 6 is hinged to the portion 3 of the rear panel while a second roof panel 8 is hinged to the panel 6, both roof panels having hinged thereto side flaps 14, 15. Side panels 11, 12 are also hinged to the lateral edges of the rear panel and when the top is fully erected the front roof panel 8 is secured to the windscreen and the side flaps, side panels and body are locked together as at 18. To let down the top the front roof panel 8 is, together with its side flaps 15, folded on to the panel 6 which, when its side flaps 14 are folded in, is folded down on the inside of the rear panel. The side panels 11, 12 are then folded inwards and the rear panel with its folded portions then folded into the boot. In a modification, the rear panel may be arranged to slide down on guides into the vehicle body. The doors are provided with side windows.
Patent GB-1425610-A (GB)
Title: Mask alignment in manufacturing semiconductor integrated circuits
IPC: G03F9/00
Filed: 1973-05-24
Abstract: 1425610 Semi-conductor mask alignment HITACHI Ltd 24 May 1973 [26 May 1972 2 June 1972] 25014/73 Heading G1A In a system for positioning a semi-conductor wafer during integrated circuit manufacture the wafer 3, Fig. 1, is mounted on a movable carriage 23 beneath a mask 4 which has a pattern of apertures therein; the wafer is provided with a reflective pattern and correct positioning of the wafer beneath the mask is established by measuring the amount of light from source 9 which passes through the mask, strikes a reflective portion of the wafer pattern, and then passes back through the mask to detectors 11a, 11b. The mask has a pattern of elongate slits in it, and the wafer has a pattern of oval reflective areas which are produced by roughening the surface of the wafer with an etchant where reflection is not desired. The mask slits superposed in an off-centre position on the wafer are shown in Fig. 5. Four detectors are provided in the Fig. 1 apparatus, only two being shown, which receive light from lens 7 corresponding to the four areas of the mask shown at 17, 18, 19 and 20 in Fig. 5. When the amount of light received by each detector is the same the wafer is correctly positioned beneath the mask. To perform a coarse position adjustment a mask 12, Fig. 1 is placed in front of the detectors so that only the light from the outside slits of the mask 4 is received. The mask 12 is then moved to allow all the light from mask 4 to reach the detectors so that a fine position adjustment may be made. The carriage 23, to which the wafer is attached via vacuum chuck 1, is moved by motor and screw A and 27, for coarse adjustment, and for fine adjustment by motor B acting on elastic metal legs 24 via spring 26. Similar components provide motion in the orthogonal direction. For rotational alignment a second pattern of apertures on the mask 4 and a second reflective pattern on the wafer are required.
Patent GB-1484086-A (GB)
Title: Titanium trichloride catalyst component
IPC: C08F10/00
Filed: 1975-06-11
Abstract: 1484086 Olefin polymerization catalysts SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 9 June 1976 [11 June 1975 26 Nov 1975] 25016/75 Heading C3P [Also in Division C1] Olefins are polymerized in the presence of violet TiCl 3  as catalyst together with a dialkyl aluminium halide as activator, said violet TiCl 3  being made by heating brown TiCl 3  in the presence of a halogenated aliphatic or aromatic hydrocarbon (see Division C1). If desired, before polymerization, the violet TiCl 3  together with some or all of the activator may be prepolymerized with a small amount of the olefin. The process is particularly applicable to the homopolymerization of propylene and the copolymerization of ethylene and propylene. The polymerization is typically carried out in an inert liquid, in the vapour phase or in the liquid olefin monomer, In the examples TiCl 4  is reduced with triethyl aluminium, heated with nbutyl- or n-octyl-chloride or CCl 4  and n-ootylchloride and used with diethyl aluminium chloride to polymerize propylene in n-octane in the presence of hydrogen.
Patent GB-615065-A (GB)
Title: Improvements connected with step ladders
IPC: E06C1/16
Filed: 1946-08-22
Abstract: 615,065. Step ladders. MATTHEWS, C. H. Aug. 22, 1946, No. 25023. [Class 20(ii)] A step ladder has channel sectioned sides 6 carrying channel sectioned treads 5, with a non-slip surface, and a pivoted strut 16 with angle sectioned sides which fit over the sides 6 when the ladder is closed. The bottom ends of the sides 6 are closed in by channel sectioned members 17. The ladder is held open by pairs of pivoted links 22 wherein a pin 24 on one engages a recess on the other.
Patent GB-904392-A (GB)
Title: Process for the manufacture of shaped structures from acrolein copolymers
IPC: D01F6/18
Filed: 1960-07-18
Abstract: An acrolein copolymer shaped structure, especially a filament or film, is made by spinning or casting an aqueous solution of an adduct of sulphur dioxide with a copolymer of acrolein and an acrylic acid derivative, the copolymer containing 30 to 70% by weight, preferably at least 50% of the acrylic acid derivative, and stretching the spun or cast structure at 50 DEG -200 DEG C. after substantially all the solvent has been removed by evaporation. Specified acrylic acid derivatives include acrylic acid methylester and acrylonitrile, which are preferred, and also alkyl acrylates in general, and acrylic alkylamides, e.g. acrylic acid ethylamide and dimethylamide.  The acrolein copolymers may be obtained in known manner by radical-initiated polymerization, preferably by emulsion polymerization in the presence of a redox system, e.g. alkali persulphate/alkali bisulphite, with small additions of activating metal ions, e.g. silver and ferrous ions, and a dispersing agent, e.g. alkyl sulphonates, fatty alcohol sulphates, salts of higher sulphocarboxylic acids or nonionic dispersing agents based on ethylene oxide.  A hydrophilic protective colloid may be used in place of the dispersing agent, especially one having no alcoholic hydroxyl groups in the polymer chain, e.g. polyacrylic acid, polyvinyl pyrrolidone, vinyl pyrrolidone-acrylic acid copolymers and high molecular weight polyethylene oxides and water soluble ethylene oxide-propylene oxide copolymers.  Preferably, however, the acrolein copolymers are made by the use of a redox system, e.g. that previously mentioned, in a mixture of water and a water-soluble solvent, especially a lower glycol, e.g. ethylene glycol, 1:2 and 1:3 propylene glycols.  The solvent mixture consists preferably of 1 part by weight of water to 1,5 to 4,5 parts by weight of organic solvent. The aqueous solution before spinning or casting p  preferably contains 3-8% by weight free sulphur dioxide and may also contain 10-20% by weight, calculated on the solid content of the aqueous solution, of a polyglycol ether or up to 10% by weight of a polyalcohol in which the hydroxyl groups are separated by at least four carbon atoms.  Spinning or casting is effected in known manner and the solvent is preferably removed at a temperature below 200 DEG C.  The shaped structure may then be stretched 200-600%, preferred temperatures being 60 DEG -160 DEG C. for films and 50 DEG -120 DEG C. for filaments.
Patent GB-831295-A (GB)
Title: Improvements in or relating to semiconductor devices
Inventor: FULLER DENNIS QUINTRELL
IPC: H01L23/04
Filed: 1957-08-08
Abstract: 831,295. Semi-conductor devices. PYE Ltd. Aug. 6, 1958 [Aug. 8, 1957], No. 25078/57. Class 37. A semi-conductor device comprises a disc or wafer of semi-conductor material having at least one surface enclosed by a hollow metal cap conductively attached by its periphery to the semi-conductor surface, the cap having an insulated lead through connection at its crown connected to an electrode on the enclosed surface of the device. A semi-conductor rectifier, Fig. 2, may have the other surface of the wafer attached to a metal member such as a stud or plate forming a heat sink. A transistor, having an electrode each side of the wafer, would have a cap on both of the opposite surfaces of the disc or wafer, Fig. 1 (not shown). The cap may have a tag or clamping device to make connection to the cap and hence the wafer.
Patent GB-252259-A (GB)
Abstract: 252,259. Tubbs, Lewis, & Co., Ltd., and Tubbs, S. W. Feb. 23, 1925. Spool holders. - Spools for displaying garter elastic or other strip material 11 have stationary end flanges 2 provided with integral dovetail-shaped extensions 2<1> forming feet, which are held on a base 4 by inclined members 6, 7 provided with supports 9, 10. One or both of the members 6, 7 is hinged to allow of the removal of any one or all of the spools. The material 11 is exposed to view on both side edges of the spool, and a top bar 13 carried on uprights 12 forms a platform over which the material 11 is drawn. The drum 3 of each spool may be fixed to the flanges 2, or rotate relatively thereto.
Patent GB-1304664-A (GB)
IPC: A61K31/215
Filed: 1971-04-19
Abstract: 1304664 Aryl bicyclo[2,2.2]-octanecarboxylates DAIICHI SEIYAKU CO Ltd 19 April 1971 [25 March 1970] 25324/71 Heading C2C Novel compounds of Formula I wherein R is H, carboxy, #-carboxyalkyl, #-carboxyalkenyl, #-carboxyalkylcarbonyl, #-carboxyalkoxy or #-carboxyaminoalkyl in which the alkyl group has 1 to 6 carbon atoms, and R<SP>1</SP> is H or optionally carboxy when R is 4<SP>1</SP>-carboxy and mineral acid salts thereof, are prepared by removal of protecting groups from an intermediate of Formula V wherein -COOZ is a protective group, R<SP>11</SP> is the same as R or is a group R in which the terminal carboxy group is protected and R<SP>111</SP> is the same as R<SP>1</SP> or is a protected carboxy group, which is prepared by reaction of a phenol of Formula IV with a compound of formula wherein X is halogen. Intermediates of Formula IV above are prepared from the free acid and benzyl chloride. N-Benzyloxycarbonylaminomethylbicyclo- [2,2,2] - octane - 1 - carboxylic acid chloride is prepared by action of thionyl chloride on the carboxylic acid which is obtained by action of benzyloxycarbonyl chloride on the sodium salt of the amino-acid and acidification. Pharmaceutical compositions having antithrombin activity comprise an above novel compound and a pharmaceutical carrier.
Patent GB-532573-A (GB)
Title: Improved combined bed, seat and stretcher
IPC: A47C17/68
Filed: 1939-09-08
Abstract: 532,573. Combined bed, seat and stretcher. BRADSTEDS, Ltd., PURDY, W. R., and HUGHES, W. L. Sept. 8, 1939, No. 25406. [Class 52 (iii)] [Also in Group XXXII ] A combined bed, seat and stretcher comprises a rectangular frame A formed of angle irons or inverted channel irons supporting a mattress and having pivoted to the inner surfaces of the irons pairs of legs d, d<SP>1</SP>, d<SP>2</SP> which, when folded up, lie wholly within the confines of the irons so that the storage depth of the appliance is only that of the depth of the irons. An additional pair of legs h is pivoted within one or each of the end frame members. Stops f arrest the legs in set-up position. Carrying handles g may be folded into the frame members. When set up as shown in Fig. 2, the appliance may be used as a seat, the legs d<SP>1</SP> giving strength to the middle of the appliance. For use as a bed the legs d<SP>1</SP> may be folded up. When used as a stretcher, Fig. 2, one end may be supported on the legs h and the other end on the handles g or on the end of the frame. Another degree of inclination may be obtained by supporting the appliance on the legs hand d<SP>2</SP>.
Patent GB-423530-A (GB)
Title: Improvements in or relating to hydraulic presses for moulding plastic materials
IPC: B30B15/30
Filed: 1933-09-14
Abstract: 423,530. Moulding screw - threaded articles &c. SHAW & SONS (SALFORD), Ltd., J., and SHAW, J. B., Wellington Street, Salford. Sept. 14, 1933, No. 25409. [Class 87 (ii)] In the moulding of articles such as screwthreaded bottle caps which cannot be ejected from the moulds by a plain stripping-operation, the moulds carrying the moulded articles are moved out of register with the pressing-dies into register with ejecting-members which raise the moulded articles and mould cores bodily out of the mould walls into a position in which the articles can be unscrewed or otherwise removed from the cores by hand. The Figure shows one construction for moulding screw caps for bottles from synthetic resins in which a pair of moulds i rotate round the centre pillar c so as to be presented alternately to the press d and ejection-apparatus k. At the pressing- station the contents are pressed between a fixed lower platen d and sliding upper platen or die e, both platens carrying heaters d<1>, e<1>. At the ejecting-station, the projecting ends m<1> of the core bars are received in corresponding recesses in the rods m which are raised by the ram k<1> while the table is in contact with the fixed abutment n. To facilitate the rotation of the table, the treadle q is depressed to raise the links p and so raise the table from contact with the heater d<1>. This action is assisted by the counterweight r. An additional heater s may be provided at the ejecting-station. A stop, interlocked with the power valve of the press, may be provided to prevent rotation of the table during the pressing and ejecting operations. A modified form of apparatus is described, in which the lower press platen is the movable one and in which the ejection cylinder acts downwardly instead of upwards.
Patent GB-217490-A (GB)
Title: Improvements in and relating to dynamo electric machines
IPC: H02K3/16
Filed: 1923-10-12
Abstract: 217,490. British Thomson-Houston Co., Ltd., (General Electric Co.). Oct. 12, 1923. Coils and conductors; armatures and field magnets, dampers and shortcircuited screens on cores and poles of.- In dynamo-electric machines wherein each core slot contains conductors of two distinct windings, the conductor 4 of one winding is laid in a narrow part of the slot and the conductors 6 of the other winding are laid in a wider part and on either side of the conductor 4. This enables the winding 4 to be removed without disturbing the winding 6. The winding 4 may constitute the continuous-current exciting winding of a synchronous machine, and the conductors 6 the amortisseur and starting winding. The end rings 7 of the winding 6 are provided with slots of similar shape to those of the core, and the ends of the conductors 6 are bent around the teeth 8 of the end rings and secured thereto by screws 9, corrugations 10 in the conductors allowing for their expansion.
Patent GB-1126481-A (GB)
Title: Animal feeding apparatus
Inventor: ROY JAMES HENRY BARSTOW
IPC: A01K9/00
Filed: 1964-06-19
Abstract: 1,126,481. Animal feeding apparatus. NATIONAL RESEARCH DEVELOPMENT CORP. 17 Sept., 1965 [19 June, 1964], No. 25482/64. Heading A1M. Apparatus for dispensing liquid feed to a number of feeding stations comprises a main reservoir 1 holding a bulk supply of liquid feed which is pumped from the reservoir by pump 10 along a main duct 12 having a branch pipe 16 corresponding to each feeding station, a valve 17 being located in each branch pipe and adjustable to deliver feed at a constant rate, means being provided whereby each valve can be held open for a predetermined time so that a predetermined amount of feed is delivered at the corresponding feeding station. The main duct 12 slopes upwardly to an overflow reservoir 14 provided with a return duct 15, the valves 17 being opened sequentially under the control of a selector device 18 when a funnel 13 in the reservoir 14 is full as indicated by a level sensing device. The selector 18 includes an adjustable controller for each valve 17 which in conjuction with a common timer 19 controls the length of timer for which each valve 17 is open. A manual valve selector 20 and manual timer 21 may be included. At the end of the feeding period pump 10 is reversed and feed remaining in the apparaus is returned to reservoir 1 from which it is drained through valve 25. The pump 10 is then used to circulate washing liquid through the apparatus, the pipes 16 being removed from the feeding stations and directed into gutters in the animal pens and the valves 17 being opened under the control of devices 23, 24 and 29. The liquid feed is maintained at the required temperature by passing either steam or cold water into the jacket 2 surrounding reservoir 1 under the control of thermostat 7.
Patent GB-901365-A (GB)
Title: Improvements in or relating to electric arc furnaces
Inventor: RAVENSCROFT JACK
IPC: G05D23/19
Filed: 1957-08-13
Abstract: 901,365. Control systems for electric arc furnaces. BRITISH IRON & STEEL RESEARCH ASSOCIATION. Nov. 13, 1958 [Aug. 13, 1957; May 16, 1958], Nos. 25535/57 and 15783/58. Drawings to Specification. Class 38 (4). An electric arc furnace used for making steel comprises a control system whereby during the first stage of the melt the power supplied to the furnace is progressively increased in steps at intervals determined by a timing mechanism, whilst during the second stage of the melt the power supplied is progressively decreased in steps at intervals determined by the timing mechanism, heat-responsive means being associated with the furnace whereby the progressive decrease in the power supplied to the furnace cannot be implemented until the temperature of the furnace has reached a predetermined value. The alterations in the power supplied to the furnace are made by way of changes in the tappings on the supply transformer, the tapchanging apparatus being of the " off-load " type. The temperature or heat-responsive means may be arranged to be either responsive to the actual temperature of the molten metal or to the rate of increase of temperature of the roof of the furnace. The second stage of the melt period is followed by the refining period during which the furnace temperature increases. At the end of the refining period when the furnace temperature has reached a required value a second temperature-responsive means operates to further decrease the power supplied to the furnace. Should, however, the temperature increase still further the second temperature-responsive means will operate once more to still further reduce the power supplied to the furnace. During the normal changes in supplied power the second temperature-responsive means may over-ride the first temperature responsive means. Manually operated switches are provided whereby any of the power changing steps may be omitted or whereby the power changing step may be in the opposite direction to that which would normally take place. Lamps are provided showing indicated and actual power changes thus showing correct operation of the system. Specification 901,366 is referred to.
Patent GB-1005327-A (GB)
Title: Improvements in and relating to dispersions
IPC: C09D7/45
Filed: 1964-06-19
Abstract: A pigment-filler composition comprises a finely-divided pigment-filler and 0.1 to 20% of a finely-divided polyoxymethylene polymer comprising fibres less than 50 microns in length and having a length to diameter ratio of at least 10 to 1.  The fibrous material enhances the dispersion of solid pigment or filler material in liquid suspension media.  Specified pigment-fillers are zinc oxide titanium oxide, red lead, bronze and aluminium leaf, limestone, talc, glass and organic polymers. Liquid media specified are polyester resins, epoxy resins, alkyd varnish composition, solvents &c.