baber/WOPTO huggingface dataset:
Patent GB-1224988-A (GB)
Title: Improvements in or relating to the purification of cultivated microorganisms
Inventor: CLARK ALASTAIR JAMES
IPC: C12N1/02
Filed: 1967-06-19
Abstract: 1,224,988. Yeast &c. BRITISH PETROLEUM CO. Ltd. May 29, 1968 [June 19, 1967], No.28063/67. Heading C6F. A process for the removal, at least in part, of contaminants from a mixture of a micro-organism and contaminants, the contaminants consisting of or including a hydrocarbon oil and water, comprises subjecting the mixture to drum drying in a drier having a pair of hot rolls which constitute a nip whereby at least part of the water is removed by evaporation and a micro-organism enriched product is removed below the nip. Examples are directed to the purification of yeast creams of Candida tropicalis or Saccheromyces cerevisiae contaminated with gas oil and aqueous medium, with the aid of a drum drier consisting of twin horizontal rollers providing a nip and having the following characteristics: - diameter of rolls 18 inches width of rolls 18 inches temperature 140‹ C. rate of revolution 30 revs per minute. The dried yeast while still friable was withdrawn from below the nip of the rolls by means of scrapers. The yeast may then be further purified by solvent extraction and filtration. The oil enriched mixture held above the nip of the rollers may be recycled.
Patent GB-474857-A (GB)
Title: Improvements in or relating to high-frequency iron cores
IPC: H01F17/04
Filed: 1936-10-16
Abstract: 474,857. Inductances. MICHAELIS, E. Oct. 16, 1936, No. 28129. [Class 38 (ii)] A magnetic dust core of cotton-reel shape for high frequency inductances is formed of two parts of identical shape produced by the method described in Specification 450,297, [Group XXXVI], and is characterized by the length of the extension d being limited to one and one half times the thickness of the flange e. The core parts may be axially bored to receive an adjusting or supporting pin. Specification 449,450, [Group XXXVI], also is referred to.
Patent GB-1437742-A (GB)
IPC: H02G15/072
Filed: 1974-06-25
Abstract: 1437742 A high voltage cable KERITE CO 25 June 1974 [27 July 1973] 28146/74 Heading H1A A high voltage cable has multiple layers of insulation with low specific inductive capacity (dielectric constant) and a layer of high specific inductive capacity (SIC) between them. The alternation of low and high can take place one or several times. A metallic shield may be placed around the outermost layer, which may be thinly coated with a semiconductive material. The core may also be coated with semiconductive material. A termination to the cable has a lug on the core a tapered insulation and a cutback in the shield (if present).  A cable joint between two such cables uses known joint blocks (Fig. 5, not shown). Preferably the low SIC layer should be at least 5 times thicker than the high SIC layer. Low SIC material has a dielective constant ranging from 2 to 4.5, while that of high SIC material is 10 or greater.
Patent GB-319219-A (GB)
Title: Improvements in and relating to liquid boilers
IPC: F22B3/02
Filed: 1929-09-17
Abstract: 319,219. British Thomson-Houston Co., Ltd., (Assignees of Nerad, A. J.). Sept. 17, 1928, [Convention date]. Mercury boilers.-In a boiler particularly of the kind described in Specification 319,220, each boiler tube comprises an outer tube 3 secured to the drum 1 by welding 4, a core 5 with an inner passage 6 through which the liquid to be evaporated flows to the bottom of the tube and a return annular passage 7. The drum contains a baffle plate spaced therefrom and provided with openings 17 which register with the core passages 6. The passage 17, is connected to the passage 6 by means of a sleeve 21 capable of yielding axially and angularly and having flanges 22, 23 thereon engaging the passages 17, 6 respectively. The sleeves 21 are held by keys 24 in the baffle plate.
Patent GB-533976-A (GB)
Title: Improvements in or relating to sliding-clasp fasteners
IPC: A44B19/06
Filed: 1939-10-20
Abstract: 533,976. Sliding-clasp fasteners. PLASCO, Ltd. Oct. 20, 1939, No. 28303. Convention date, Oct. 20, 1938. [Class 44] To counteract the deleferious effect of swelling and convex deformation in laundering processes, sliding clasp fastener elements 2 made of thermoplastic material have the faces of the elements which are engaged by the top and bottom plates 9 of the usual slider provided with recesses or cam-cavities 7. The ends engaged by the flanges of the slider may also have recesses 11. The invention is not restricted as regards the form of cavity or recess, those shown being cylindrical, nor as regards the form of the usual interengaging projections 4 and recesses 5, and is applicable to elements with metal cores and thermo-plastic coverings.
Patent GB-1362742-A (GB)
Title: Reverse osmosis module
IPC: B01D63/06
Filed: 1972-06-16
Abstract: 1362742 Reverse osmosis apparatus PHILCO-FORD CORP 16 June 1972 [13 July 1971] 28310/72 Heading B1X A segment for a reverse osmosis module is produced by a method wherein a fibrous support is applied to the exterior of a tubular reverse osmosis membrane and the resulting tubular reverse osmosis member is (a) pressurized with a first liquid which is non-injurious to the reverse osmosis qualities of the member, the liquid being maintained at an elevated temperature and under an elevated pressure sufficient to enable the member to be bent into arcuate form around a given radius without damage but insufficinet to be injurious to the reverse osmosis qualities of the member, (b) wound on to a spool and, after removal therefrom of the liquid, (c) pressurized with a second liquid which is non-injurious to the reverse osmosis qualities of the member, the liquid being maintained at an elevated temperature sufficient to establish the desired reverse osmosis qualities of the member and under an elevated pressure sufficient to improve contact between the membrane and the fibrous support. Water may be used as the first liquid and the second liquid. After removal therefrom of the first liquid and prior to introduction thereto of the second liquid, the spooled member may be  pressurized with water at ambient temperature. The membrane may be made from cellulose acetate and the fibrous support may be braided, knitted or woven; details relating to the preparation of the membrane and of the member are given in the Specification, reference in this connection being made to USA Specification 3446359. The segment may have the construction illustrated in Figs. 1 and 2 wherein a flanged spool 1 supports a coil 2 of membrane exteriorly supported with braided support, the layers of the coil being separated by liners 3, 4 and the ends of the coil being located by clamping members 9, 10, 11 and 12, 13, 14; secured about the coil by a sealing strip 6 and retaining rings 8 is a cover 5 having a drain fitting 7 and associated connection 15. Specified uses for reverse osmosis modules comprising a plurality of such segments are the concentration and modification of beverages, for example beer and fruit juices, and of medicinal liquids, for example sera and vaccines, the purification of sewage and waste waters and, as exemplified, the desalination of brine and brackish water.
Patent GB-649726-A (GB)
Title: Method for producing stemmed glasses through electric welding
IPC: C03B23/213
Filed: 1947-10-23
Abstract: 649,726. Dielectric heating. COMPAGNIE DES LAMPES. Oct. 23, 1947, No. 28341. Convention date, Oct. 22, 1946. [Class 39(iii)] The stem 1 and cup 2 of a glass are held in contact on supports 3, 4 and are welded together by dielectric heating applied through an electrode 5 located axially in the cup and an annular electrode 6 with inner and outer conical walls arranged coaxially around the stem, the H.F. being applied to the electrodes when the parts 1, 2 have been brought into contact after preliminary heating. The conical electrode 6 is in two parts for removal from the stem. Specifications 616,251 and 649,757 are referred to.
Patent GB-619541-A (GB)
Title: Improvements in gear shift mechanism for motor vehicles
IPC: B60K23/00
Filed: 1946-09-23
Abstract: 619,541. Controlling variable-speed gearing. FORD MOTOR CO., Ltd. Sept. 23, 1946, No. 28400. Convention date, Oct. 19, 1945. [Class 80 (ii)] A steering column gearshift control comprises a lever 28 secured to an actuating tube 27 arranged concentrically and exteriorly of the steering column 26 which is rigidly secured at its lower end and supported by a bracket 36, secured to a flange 17 of the instrument panel 16, intermediate its ends. Metal backed fabric bearings 52, 62, 63 support the tube on the column and permit longitudinal and rotational movement of the tube, the lower end of which is connected to the transmission gear-box by links 33, 34 and arms 31, 32, whereby a gear change may be effected. The bracket 36 passes through a longitudinal slot in the tube 27 and has a skirt 38 secured thereto which covers the aperture.
Patent GB-319332-A (GB)
Title: Method of imitating checker work and other inlaid designs
IPC: B41M3/06
Filed: 1929-09-19
Abstract: 319,332. Masa Ges. zur Herstellung K³nstlicher Oberflõchen. Sept. 20, 1928, [Convention date]. Printing processes; offset printing.-Imitation inlaid work is prepared by taking copies of the original, equal in number to the number of colours, making printing-plates therefrom, and printing, by relief, intaglio, or lithographic offset methods, on to wood, metal, paper, compressed wood-meal, ceramic articles, or other materials so that the grain and colour of the original are reproduced. The Specification as open to inspection under Sect. 91 (3) (a) refers also to printing on to a material referred to as " pressboard (Presszell)." This subject-matter does not appear in the Specification as accepted.
Patent GB-823644-A (GB)
Title: Improvements in and relating to self-locking nuts
IPC: B21K1/70
Filed: 1957-09-10
Abstract: 823,644. Forging nuts. NATIONAL MACHINE PRODUCTS CO. Sept. 10, 1957 [Oct. 23, 1956], No. 28557/57. Class 83 (4). [Also in Group XXV] A lock nut formed by forging comprises a body 10, Fig. 3, with a cylindrical extension 12 having a screwed through bore 14, the extension having portions 26 forced radially inwards by tools 20. The portions 28 are formed between the portions 26, and the extent of inward movement is less than the depth of the thread. In a modification, the extension is frusto-conical and the deformation is effected by movement of a tool 120, Fig. 8, along the nut axis. The tool has a bore 126 and a frusto conical counterbore 128, formed with lands 130, Fig. 7, separated by recesses 132.
Patent GB-1154584-A (GB)
Title: Improvements in Sliding Clasp Fasteners.
Inventor: SPALDING ERNEST GEORGE GERALD
IPC: A44B19/26
Filed: 1965-07-06
Abstract: 1,154,584. Sliders. FLEXIGRIP Inc. 27 Sept., 1966 [6 July, 1965], No. 28587/65. Heading E2S. A slide for a fastener comprising two interengaging strips of thermoplastics material is adjustable to operate to open or close the fastener in either direction of motion and form a seal with the strips. The slider comprises a main body portion 2 with two grooves for the strips which grooves open laterally of the slider and merge together towards the ends into an open passage for the strips, each end has a clamping edge 2c and a saddle portion 1 has clamping edges 1c which cooperate with edges 2c. The body portion 1 has an integral spacer section 5, which passes between the strips, and a support section 6 for the portion 1. The support section 6 and the saddle portion 1 have slots 9, 10 each of which receives a complimentary rib on the other portion to provide a moisture proof, sealed closure when the section 6 and portion 1 are clamped together by tightening a nut 14 on a threaded stem 13 integral with a projection 12 on the section 6, the projection then engages in an aperture in the saddle portion 1. To open the fastener, the saddle portion 1 is disengaged from the slots 9 and slid over the support section 6 until it abuts the stud 13. The screw is then tightened and the slider, when moved to the left, opens the fastener, and closes the fastener when moved to the right. The direction of operation is reversed when the opposite part of the portion 1 abuts the stud 13. A fastener with end stops may be closed near the middle starting from each end stop so that the slider may be left at any point along the length of fastener and sealed there. To ensure sealing the strips are made of resilient thermo plastics material and the slider of nylon or metal.
Patent GB-842958-A (GB)
Title: Improvements in the production of unsaturated polyesters containing tetrahydrophthalic acid and suitable for air-drying unsaturated polyester resins
IPC: C08G63/676
Filed: 1958-09-09
Abstract: Unsaturated polyester resins, free from undesirable physiological action and copolymerisable to yield products free from stickiness are made by polyesterifying a mixture of (a) an ethylenically unsaturated alpha beta-dicarboxylic acid or anhydride (b) tetrahydrophthalic acid or anhydride (c) a dihydric alcohol and (d) a trihydric alcohol.  In examples ployesters made by reacting a mixture of fumaric acid, tetrahydrophthalic acid, ethylene glycol, diethylene glycol and glycerine in the presence of hydroquinone and, if desired, of ethylbenzene are inhibited by the further addition of hydroquinone and then made into lacquers by the addition of styrene, cobalt naphthenate, cumene hydroperoxide, butyl acetate and acetylcellulose.
Patent GB-1106983-A (GB)
Title: Improvements in or relating to metal treating baths
IPC: C25F7/02
Filed: 1965-07-07
Abstract: Alkaline metal treating baths, e.g. cyanide copper, zinc, brass, cadmium or silver electro-plating baths, stannate tin or zincate zinc electro-plating baths cathodic cleaning baths for brass and copper containing caustic soda, soda ash, sodium metasilicate and trisodium phosphate, and anodic cleaning baths for steel containing soap, sodium aluminate, soda ash and sodium metasilicate, which have become contaminated with hexavalent chromium, are decontaminated by reducing the chromium to a lower valency state by adding at least one polyhydroxy aromatic compound containing hydroxy groups ortho or para to one another.  The preferred compounds are di- or tri-hydroxy derivatives of benzene or naphthalene, numerous examples being mentioned. These compounds may be added in solid form together with inert diluents or materials adding a desired property to the bath e.g. wetting agents, plating bath brighteners.  Among diluent materials specified are sugars, Rochelle salt and glyconic acids.
Patent GB-500819-A (GB)
Title: Improvements in vacuum electric discharge devices
IPC: H01J21/02
Filed: 1937-10-22
Abstract: 500,819. Thermionic valves; automatic volume and selectivity control. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 22, 1937, No. 28897. Convention date, Dec. 17, 1936. [Classes 39 (i) and 40 (v)] A valve comprises in addition to a cathode 10 main grid 12 and anode 11, an auxiliary anode formed by two connected rods 17, 18, and a second control electrode 14, variations in tho bias of which varies the amount of current diverted to the auxiliary anode. The valvo also comprises screen grids 13, 15 connected together. This system is enclosed in a metal envelope 24 closed by a flanged header 25 through which the leads are taken by glass beads 28. The lead 34 from the main control grid is taken out at the top of the envelope to a contact 35 mounted on an insulating disc 37. The header 25 is closed by an insulat. ing plate 38 carrying contact pins 44. The insulating plate 38 is recessed to receive the evacuating pip 41 and screening plates 71, 72 and 73 are provided for the main anode lead. A valve as described may be used as an intermediate frequency amplifier for automatic selectivity and volume control in a receiver circuit. The main control grid 12, Fig. 5, is connected to the antenna 52, R.F. . amplifier 53 and converter 54 through coupled circuits comprising transformer windings 59, 60 and variable condensers 61, 62. Changes in coil coupling may be effected by means of a feed back connection from the auxiliary anode 17, 18, which connection includes a phase shifting circuit comprising a condenser 64, resistor 65 and blocking condenser 66. A negative bias variable with the signal strength on the auxiliary grid 14 varies the feed back and varies thereby the selectivity control, a simultaneous variation in volume control is effected. In a modification the signal input may be applied to the second control grid and a fixed bias to the main grid to obtain push pull operation. Specification 500,818 is referred to.
Patent GB-533329-A (GB)
Title: A new or improved wall plug
IPC: F16B13/02
Filed: 1939-10-28
Abstract: 533,329. Wall plugs. HOLME, P. Oct. 28, 1939, Nos. 28902/39 and 11954/40. [Class 89 (i)] Wall plugs are made from elder or like pithy twigs of about three years growth. After cutting the bark is removed by treating with steam under pressure and then stripping or abrading. Drying, grading and cutting to length follow. In making plugs for a given screw diameter the blanks are brought to uniform diameter by forcing them through one or more dies having a cutting edge, followed by passage through rolls that compress the blank to hexagonal or other polygonal shape as shown in Fig. 4. or this shape may be imparted by forced passage through a tapering die. One end of the plug is drilled at d the ends are smoothed as by sanding and the leading end is chamfered at c. The original pith remains at b. All the operations may be effected in an automatic machine with hopper feed.
Patent GB-1479359-A (GB)
Title: Fulcrums for belleville springs
IPC: F16D13/58
Filed: 1975-07-09
Abstract: 1479359 Disc springs; friction clutches BORG-WARNER CORP 9 July 1975 [22 July 1974] 28935/75 Headings F2S and F2C In combination with a Belleville spring 51 having a variable spring rate providing a load/ deflection curve including a negative rate portion, a convex surfaced fulcrum 52 in contact with one face of the spring 51, the face having a rolling movement on the fulcrum surface 53 as a load is applied to the spring, the fulcrum 52 being of an annular shape and having a relatively wide convex surface 53, the movement of the contact point during rolling acting to modify the inherent load/deflection variation of the spring 51 to provide an extended range of substantially constant spring load. The convex fulcrum, surface may be an arc of a circle or of an ellipse, and may be located at the inner edge or the outer edge of the spring or at both. Preferred dimensions of the spring and fulcrum are given and methods of calculating suitable profiles of the fulcrum are described. The embodiment is a clutch assembly, Fig. 1, where a Belleville spring 43 applies a load to a pressure plate 37 and a reaction plate 27 via a curved fulcrum surface 48 on the pressure plate 37. The assembly provides a load independent of wear of the clutch linings 38, 41. Centrifugal weights 45 engaging with radial slots in the spring 43 serve to reduce the load applied by the spring 43 with increasing rotational speed of the clutch.
Patent GB-497622-A (GB)
Title: Improvements relating to filing cabinets
IPC: E06B3/50
Filed: 1937-10-22
Abstract: 497,622. Hinges; spring catches. REMINGTON RAND, Inc. Oct. 22, 1937, No. 28942. Convention date, Oct. 23, 1936. [Classes 44 and 65 (ii)] (Also in Group XVII] In a filing cabinet provided with a cover 17, Fig. 1, which can be slid from the closed position and then swung ound so as to hang adjacent the back wall 13, the mechanism for swinging the cover includes L-shaped levers 35 of which the pivots move towards the top edge of wall 13 during the rocking movement. The cover slides on rollers 29 and also carries rollers 28 which move in guide-ways 24, and as the cover approaches the fully open position, tongues 51 projecting from brackets 52 carrying the rollers 28 engage slots 47 formed in a channel member 44 joining the ends of the vertical limbs of the levers 35. If the cover is now swung round by means of one of the handles 67, 68, the levers are also swung round and spring - pressed pawls 53, which are pivoted on the levers 35 and are normally held down by lugs on the pawls pressing against the lower rails of the guide-ways 24, turn and engage the brackets 52 to lock the cover to the levers 35. Each one of the latter carries a toothed segment 38, a plain segment 36, and a roller 39 which engage respectively a rack 34 and flanges on channelshaped fixtures secured in recesses in the side walls of the cabinet. The levers 35 carry rollers 64 engaged in guides on a tray 62 whereby, as the cover is swung round, the tray is raised. The tray is also mounted on lazy-tong levers 63. The front, back, and longitudinal edges of the cover are formed with tongues, such as 10, 16, which engage corresponding recesses in the side walls, and the recesses may be provided with sealing strips. The cabinet is made up of an outer sheet-metal casing with a lining of fire-resistant material, and it is supported on a tand 4 which is provided with a cushion for he cover to abut against in the open position. A spring-pressed dog 69, Fig. 7, pivoted on a bracket carried by the cover, serves to prevent the cover from being pushed back by engaging the back wall of the cabinet, but by pressing on a button 77, the dog is raised to clear the top edge of the back wall. The button consists of an upper part of low heat conductivity and a metal lower part, and an ordinary key lock is provided to lock the button in the raised position shown.
Patent GB-1501763-A (GB)
Title: Disposable container for bulk materials
IPC: B65D88/16
Filed: 1975-02-11
Abstract: 1501763 Bulk supply bags BETTER AGRICULTURAL GOALS CORP [trading as BAG CORP] 11 Feb 1975 [11 April 1974] 29007/77 Divided out of 1501762 Heading B8K The disclosure is substantially identical with that of the parent Specification but the claims are directed to a receptacle 12 for flowable material comprising a bag 50 of flexible sheet material defining a chamber for the flowable material, the bag being forced from sheet material wrapped in a spiral with edges adhesively attached together to form a double walled bag having a cylindrical wall. Straps 76 are attached to the sheet material at spaced locations on its exterior for supporting the bag in a normal position, and selectively closable fill and discharge ports 58, 60 are positioned respectively at the top and bottom of the bag for filling and discharging material, the bag having the means 62, 64 for closing both walls at the fill and discharge ports.
Patent GB-166505-A (GB)
Title: Device for lowering boats
IPC: B63B23/04
Filed: 1920-10-15
Abstract: 166,505. Beer, J. de. July 16, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Davits.-A davit 1 adapted to swing in a frame 4 on the deck, is characterized by a cable 11 or equivalent passing round pulleys or rollers 5, at least one of which is fitted with driving means, the ends of the cable being secured to the davit near the top. A part of the cable is replaced by a chain 12, which passes through an opening in the davit and is guided therein by a bush or channel. The chain pulley 5 is driven by toothed gearing, and the pulley 6 may be driven in the same manner if desired. Variations in the length of the cable are allowed for by fitting springs 15, or by making one of the pulley axles movable against a spring.