baber/WOPTO huggingface dataset:
Patent GB-691114-A (GB)
Title: Improvements in or relating to the dissolving of synthetic linear polyamides and recovering them from solution
IPC: C08J3/11
Filed: 1950-05-11
Abstract: Linear unsubstituted polyamides or polyesteramides yielding on acid hydrolysis (a) an amino-acid hydrochloride, (b) a diamine hydrochloride and a dibasic acid, or (c) an aminoalcohol hydrochloride and a dibasic acid, and insoluble in methanol at temperatures up to the boiling-point thereof at normal pressure, are dissolved in methanol by heating under pressure to a temperature considerably in excess of the normal boiling-point. On cooling the solutions precipitate finely-divided polyamide. Before cooling the solutions may be filtered or centrifuged to remove insoluble impurities.  The treatment is useful for recovering nylon from contaminated scrap and does not degrade the polymer.  The temperatures for solution vary with the polyamide. In examples: (1) polyhexamethylene adipamide was dissolved in methanol at 163 DEG  C.; on cooling the solution, finely-divided polymer precipitated; (2) polyhexamethylene sebacamide was dissolved in methanol at 170 DEG C.; the solution became turbid on cooling to 106 DEG C. and below this temperature polymer separated as a fine dispersion.  Specification 576,363 is referred to.
Patent GB-706826-A (GB)
Title: Improvements in and relating to discharge regulators
Inventor: DENNIS NORMAN GEORGE
IPC: F03B15/02
Filed: 1952-05-09
Abstract: 706,826. Nozzles. ENGLISH ELECTRIC CO., Ltd. May 1, 1953 [May 9, 1952], No. 11781/52. Class 69 (3) A guide body 3 is fixed by a number of vanes 2 in front of the mouth of a liquid discharge pipe 1, and the cylindrical discharge area between the base of the body and the end of the pipe is adjustable by a sleeve 4. The body is asymmetrical about the pipe axis and in the described embodiment has a triangular crosssection in one plane through the pipe axis, and a frusto-conical cross-section in a plane at right angles to the first plane. The sheet of liquid discharged by the device has an elliptical crosssection.
Patent GB-787742-A (GB)
Title: Processes of producing uranium trioxide
IPC: C01G43/01
Filed: 1945-05-10
Abstract: Uranium trioxide, capable of rapid reaction with carbon tetrachloride to produce uranium chlorides, is prepared by treating uranium tetraoxide slurries or suspensions with aqueous ammonium hydroxide, filtering the suspension, drying and calcining the uranium tetraoxide to uranium trioxide.  According to Example (1) an aqueous paste of uranium dioxide was treated with nitric acid to produce uranyl nitrate which was then treated with hydrogen peroxide at 70 DEG  C. to produce uranium tetraoxide dihydrate suspension.  The suspension was thinned with four times its volume of ammonia water with stirring, the supernatant liquid was siphoned off and a further treatment with ammonia water was effected.  The mixture was filtered and the precipitate washed and dried at 70 DEG  to 80 DEG  C. to produce monohydrated uranium tetraoxide.  The dry cakes were crushed to a powder dried at 200 DEG  C. and then calcined at 325 DEG  C. to obtain uranium trioxide.
Patent GB-668511-A (GB)
Title: Cleaning brush
IPC: A46B11/06
Filed: 1950-05-11
Abstract: 668,511. Brushes. KLEEF, K. VAN. May 11, 1950, No. 11801/50. Class 19. A cleaning brush is characterised by a hollow brush body which may be connected to a water conduit and which is provided with spray holes between the bundles of hair or equivalent, or strips of chamois leather or rubber of the brush, the spray holes being arranged in the ends of pipes made of elastic material extending beyond the brush body in the direction of the bundles of hair &c. so that the size of the spray holes varies according to the water pressure. The diameter of the spray holes may be smaller than that of the pipes. In the Figure the cleaning brush consists of a hollow body 1 provided with a feeding pipe 2 for supplying water and with a distributing pipe 3 to guide the water to the spray holes 6 which are arranged between the bundles of hair or bristles 5. The body is made from elastic material, for example rubber and the connecting fitting 4 is fixed, detachably or otherwise, to.the body. The spray openings 6 are arranged in projecting parts 7 of the brush body in which the feeding pipes for the water are provided.
Patent GB-1356051-A (GB)
Title: Fastening means for connecting work-pieces together
IPC: F16B5/02
Filed: 1971-04-28
Abstract: 1356051 Riveting J O KING JNR 28 April 1971 [30 April 1970] 11889/71 Heading B3U Also in Division F2] A tubular preferably metal sleeve member (100) has a cylindrical wall portion 101 for surrounding the shank 14 of a fastener, e.g. bolt 11 and for bearing against the shank and against the inside of holes H in workpieces P, the thickness of the wall portion 101 being no greater than 0À016 inch, and preferably less than 0À008 inch. Thus if the holes H for a fastener are damaged, they may be slightly enlarged and the fastener adapted to the enlarged size hole by providing it with such a thin-walled sleeve member, obviating the necessity of using a fastener of the next highest standard size. The sleeve member may be provided with an annular head flange 102 co-operating with the fastener head 13 or be headless, and may have a tapered outer surface for use with tapered holes. If the outer surface of the wall portion 101 is provided with V-section circumferential grooves 110, preferably 1/16 inch axially spaced and of a depth half the thickness of portion 101, the portion 101 may be easily broken so that the sleeve member length may be suited to a particular workpiece thickness . When the fastener is a blind rivet 31, the sleeve member may be blind, the wall portion 701 being expanded upon setting of the rivet as shown in Fig. 10. The sleeve member also prevents abrasion and corrosion between the workpieces and the fastener, and the grooves 110 may serve to retain a sealant or a bonding agent.
Patent GB-552023-A (GB)
Title: Improvements in and relating to the coagulation of rubber latex
IPC: C08C1/15
Filed: 1941-09-17
Abstract: 552,023. Coagulating latex. IMPERIAL CHEMICAL INDUSTRIES, Ltd. (Du Pont de Nemours & Co., E. I.). Sept. 17, 1941, No. 11896. [Class 70] Glycollic acid is used as a coagulating-agent for latex. The acid may be added as a 2 per cent. aqueous solution in amounts of .1 to .5 per cent. on the weight of the rubber to latex diluted to contain 15 per cent. of rubber. Substances which hydrolyse to yield glycollic acid, such as esters, salts of weak bases, anhydride or glycollide may be used.
Patent GB-776351-A (GB)
Title: Improvements in or relating to cathode-ray tubes
IPC: H01J29/84
Filed: 1954-04-26
Abstract: 776,351. Cathode ray tubes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. April 26, 1954 [April 29, 1953], No. 11987/54. Class 39(1). A cathode ray tube has a side tube for trapping loose particles and one or more funnel-shaped partitions separating the main and side tubes, each partition having one or more apertures through which loose particles can be shaken into the side tube, and the apertures being so placed in relation to the convexity of the partitions that the particles are prevented from returning into the main tube. This removes patches in the image on the screen of a cathode ray tube due to loose particles of solid material collecting on the screen, especially when the tube is operated with the screen facing downwards. The partition is conical or dished and has one or more small openings at the parts of the partition which are most remote from the screen. The tube is shaken (by a machine in manufacture or manually while in use) so that the particles pass through the small opening(s) in the partition, the conical shape of the latter preventing their return. The loose particles may be (a) emissive material detached from the cathode, or from glass or ceramic support rods during testing of the tube, (b) luminescent particles from the screen, (c) carbon or aluminium particles from the wall coating. The screen may be a luminescent or glow screen and the tube may be used for oscillography or television purposes, especially for projection television where operation of the tube with the screen facing downwards is stated to simplify the optical projection system and to reduce the total size of the apparatus. The partition is in a side tube adjacent to the screen and there may be a plurality of partitions one behind the other. Various forms and arrangements of partitions are described ; in one of them, Fig. 6, two oppositely facing partitions 17, 18 are disposed in a side tube 16. Partition 18 is clamped or sealed directly or with enamel to the side tube wall and has a central opening, while partition 17 has four arcuate openings at its outer edge and is secured to the side tube by four tags. Two inverted W-shaped partitions one behind the other and each having a set of four holes, the sets of holes being offset, may be used, Figs. 7, 8 (not shown). The partitions may be of Ni or Mo.
Patent GB-698761-A (GB)
Title: Methods of and apparatus for orthogonal extrusion or squirting of the sheaths of cables and the like
IPC: B21C25/06
Filed: 1951-05-22
Abstract: 698,761. Extruding. PECHINEY COMPAGNIE DE PRODUITS CHIMIQUES ET ELECTROMETALLURGIQUES. May 22, 1951 [May 30, 1950], No. 11990/61. Class 83 (iv). [Also in Group V] Cable sheathing.-Apparatus for the orthogonal extrusion of sheaths of cables comprises a die and a mandrel arranged in a cavity below the container, one or more bosses being formed on the wall of the container above and at the sides of the nose, or the die, or both, for checking the entry of the sheath material, a space being provided in the vertical plane of the die for the entry' of the sheath material to the die, said space lying between said one boss and the opposing wall of the container or between said bosses if there be more than one. The press comprises a body a having a container a<SP>1</SP>, a hollow mandrel b and a die c, the mandrel and die being adjustably retained by means of plugs bl and c<SP>1</SP> respectively. The die opening c<SP>2</SP> is situated on the vertical axis of the container a<SP>1</SP> and in the centre of a cavity A prolonging the container. Surrounding the mandrel and the die are bosses a<SP>2</SP> and a<SP>3</SP> integral with the body a and the material to be extruded passes through a small space a<SP>4</SP> which checks the supply of material to the top and sides of the die opening c<SP>2</SP>. The lateral end parts of the bosses are chamfered at a<SP>5</SP> to reduce the check on the flow of material to the sides of the die opening and the bottom a<SP>6</SP> of the cavity has the form of a sphere or paraboloid of revolution. The base of the cavity in the plane of the die opening may be tapered towards the top so that the pressure of the material increases steadily from the base of the cavity upwards to the die. The bosses a<SP>2</SP> and a<SP>3</SP> may be connected above the space a<SP>4</SP> by a bridge-piece a', Fig. 3, which further reduces the pressure of the material at the top of the die opening c<SP>2</SP>. In a modification the mandrel b, Fig. 5, and the die c are supported in adjustable carriers d and e respectively mounted in keyways d<SP>1</SP>, e<SP>1</SP>, respectively, in the body a. The space a<SP>4</SP> between the carriers may be adjusted by means of plugs d2 and e2 to give an even pressure distribution of the material all round the die opening. The lateral end parts of the carriers are chamfered at d<SP>3</SP> and e<SP>3</SP>. The mandrel and die are adjusted by means of plugs bl and c<SP>1</SP> as hitherto. The invention may be used for coating arc welding rods with an extrudable flux paste.
Patent GB-310043-A (GB)
Title: Improvements in or relating to high frequency thermionic generators
IPC: H03B9/01
Filed: 1929-04-18
Abstract: 310,043. Telefunken Ges. fiir Drahtlose Telegraphie. April 21, 1928, [Convention date]. Vacuum tubes.-A thermionic valve generator for very high frequencies has all the circuit elements including the oscillating circuits enclosed in the envelope, and the frequency is varied inductively or capacitatively from outside the envelope. As shown, a push-pull generator has two triodes R, R1, inductances L, L1, and a condenser consisting of two plates D, D1 welded to the anodes. The frequency is varied by means of an external cylinder, not shown, in capacitative relation with the plates D, D1 or by means of a short-circuited ring coupled with the inductances. Specification 297,775 is referred to.
Patent GB-778880-A (GB)
Title: Improvements in or relating to expanded plastic material
Inventor: LEE GEOFFREY PHILIP
IPC: C08J9/00
Filed: 1955-04-27
Abstract: A heat-expandable composition comprises a major amount of a vinyl chloride polymer, a minor amount of a butadiene-methyl methacrylate copolymer and a blowing agent.  The copolymer may be produced by polymerizing a mixture of the monomers containing a major proportion, e.g. from 70-90 per cent of methyl methacrylate.  The composition may contain from 20-40 parts of the copolymer per 100 parts of vinyl chloride polymer and a minor proportion, e.g. up to 10 per cent, of a plasticizer for the polymer.  Specified blowing agents are sodium bicarbonate, ammonium carbonate, ammonium carbamate, diamino benzene, biuret, salts of urea with organic acids, 1,3-bis-(o-xenyl) triazene, benzene sulphonyl hydrazide, p,p1-oxybis-(benzene sulphonyl hydrazide), di-N-nitrosopentamethylene tetramine, amino-guanidine bicarbonate, alpha, alpha-azodi-isobutyronitrile and azo dicarbonamide.
Patent GB-551023-A (GB)
Title: Improvements in or relating to ventilators of the louvre type
IPC: F24F13/08
Filed: 1941-09-19
Abstract: 551,023. Ventilators. HURDEN, E., and SNELLING, J. C. Sept. 19, 1941, No. 12145. [Class 137] A light-proof louvre ventilator comprises a number of superimposed louvres A each having a double or multiple wave of easy curvature so that the passages between them have a very low resistance to air flow. The louvres, preferably moulded from asbestos cement, are fitted into front and rear frame members B, C, recesses E alternating with projections D which space the louvres apart. The frame members are bent inwards at their side edges to enclose side frame members, and have inclined portions M to prevent the entry of rain. The roof and floor members J, K are attached by screws to the frame members B, C.
Patent GB-577700-A (GB)
Title: Improvements in or relating to pipe or like joints for high temperatures and pressures
IPC: F16L23/22
Filed: 1944-06-27
Abstract: 577,700. Pipe joints. STEVENS, G. C. June 27, 1944, No. 12188. [Class 99 (i)] A flanged' joint comprises a soft sealing ring 7 of high temperature resisting material such as linen fabric proofed with neoprene enclosed in oppositely disposed recesses in the flanges 3, 4, a spigot 8 on the flange 4 engaging a recess 9 in the flange 3. Pressure fluid from the pipe line is admitted to the sealing ring through passages 15 and groove 14 in the spigot. Alternatively the spigot may be external to the sealing ring, or the sealing ring recess may be in the spigot. The sealing ring may be of channel section.
Patent GB-542912-A (GB)
Title: Compositions for use in horticulture and agriculture
IPC: C01B21/093
Filed: 1940-07-30
Abstract: 542,912. Sulphur nitride. ARNOLD, M. H. M., PERRY, W. E., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 30, 1940, No. 12351. [Class 1 (ii)] [Also in Group VI] Mixtures containing sulphur nitride substantially free from ammonium chloride are obtained by reacting ammonia with sulphur chloride and treating the reaction product with water in the presence of an organic liquid immiscible with and heavier than water, separating the liquids and separating the sulphur nitride and sulphur from the organic liquid. The sulphur nitride may be produced by passing ammonia into a solution of the sulphur chloride in the aforesaid organic liquid, e.g. chloroform or carbon tetrachloride, and after the completion of the reaction adding water. According to an example sulphur monochloride is dissolved in carbon tetrachloride which has been used for previous preparations and contains iminosulphur, in addition to sulphur and sulphur nitride. Mineral fillers such as chalk, talc, bentonite and anhydrite may be added to the preparation.
Patent GB-274985-A (GB)
Title: Improvements in or relating to electric switches of the tumbler type
IPC: H01H23/16
Filed: 1926-05-13
Abstract: 274,985. Tucker, J. B. May 13, 1926. Switches, quick-action.-In an electric switch of the tumbler type embodying a quick make and break action and means for efiecting a positive make and a positive break, the ordinary faces of the tumbler are arranged to make sliding contact with projections secured to or formed integral with the contact arm. In the construction shown the oscillating member b carrying the contact arm c is provided with inwardly turned extensions b<1> which are engaged by one or other of the lower faces of the tumbler a<1> to move the member b in the event of failure of the spring-controlled quick action. When the member b has been moved into the required position the abutment of the projections against one face of the tumbler forms a limiting stop for the member b.
Patent GB-1382842-A (GB)
Title: Package with handle and a method and a machine for the manufacture  of said package
IPC: B65B9/067
Filed: 1972-03-16
Abstract: 1382842 Handle for wrap-around package IWEMA FORPACKNINGS AB 16 March 1972 12471/72 Heading B8C Two parallel slits 26, 27 are formed in or on either side of the overlapped edge portions 15, 16 of a plastics wrapping to provide an integral handle 31. The edge portions 15, 16 may be superimposed as shown to form a double layer (Fig. 4) or fin sealed and folded down to form a triple layer (Figs. 6, 7, 9). A reinforcing polyethylene, tape, paper or laminated paper strip (33, Figs. 5, 8) may be interposed between the edge portions 15, 16 of a double layer. The layers may be heat welded or glued together.' The wrapping may be of heat shrinkable polyethylene film and the articles may be beer cans 6 as shown. To form a double layer the cans 6 are fed on a conveyer 1 to a pair of intermittently operating plates 7, 8 which split the cans 6 into groups 9 of six cans. The latter are fed on to a heat shrinkable web 12 so that the edge portions 15, 16 thereof can be overlapped by folders 13, 14, heated by air through a pipe 18 and welded together by passage between a baffle 17 and a roller 19. A reinforcing strip (33) may be fed between the edge portions 15, 16 at the folders 13, 14 from a reel (32, Fig. 8) thereabove. The enveloped groups 9 are fed on a second conveyer 2 through a pre-shrink hot air tunnel 4 and then through a device for separating the groups 9. The device may comprise two electrically heated movable knives 22 which completely or partially sever the web 12. If partially severed, the groups 9 are parted by the take-up of a third, relatively faster conveyer 3. Alternatively the device may comprise two heated wires (37, 38, Fig. 10) connected between two parallel chain conveyers (39, 40) to lie transverse to the conveyers 2, 3. The separated groups 9 are then fed through a second hot air tunnel 5 to complete the shrinkthrough the slitting device 25 which may comprise cutters or a pair of vertically movable, electrically heated, L-shaped wires 28, 29. To form a triple layer, the edge portions 15, 16 of the web 12 are passed between a pair of heated rollers (19a, 19b, Fig. 9) rotating about a vertical axis and then past a plough (35).
Patent GB-721389-A (GB)
Title: Improvements in or relating to fly-back mechanisms
IPC: H03J1/08
Filed: 1952-05-16
Abstract: 721,389. Converting rotary into reciprocating or oscillatory motion. MILLEDGE, S. Z., and FRENCHAY PRODUCTS, Ltd. July 30, 1953 [May 16, 1952], No. 12479/52. Classes 80 (1) and 80 (3). A mechanism which provides a reciprocatory or oscillatory movement of a carriage from a continuous rotary movement is particularly applicable to the scanning of a series of cam members in the selecting mechanism of a multi-channel radio tuning apparatus. As shown in Figs. 1 and 4, a carriage 13 carrying a follower 12 cooperating with a series of cam discs 11 on a tuning condenser spindle 10 is guided for reciprocatory movement along a rotating screw 14 and a guide rod 27. Connection between the thread of screw 14 and the carriage 13 is provided by a toothed wheel 24, Fig. 4, which is mounted upon a spindle 23 on the carriage 13 which spindle carries an arm 25 having a projecting pin 26 thereon. The carriage 13 is biased by a spring 22 towards the right and from the position shown it will be moved freely by the spring since the pin 26 has disengaged from the guide 27 and the toothed wheel 24 is free to rotate and rolls along the screw 14 as a rack. When the carriage 13 reaches the right hand position against a boss 29 the pin 26 has made approximately one complete revolution to come into contact again with the guide rod 27. The free rotation of wheel 24 is thereby prevented and the carriage 13 moves to the left as a nut on the screw 14. On the carriage reaching its extreme left hand position the pin 26 disengages again to allow return movement of the carriage to the right again under the action of spring 22. A modified arrangement for obtaining an oscillatory motion is shown in Fig. 5, the driven carriage comprising an arm 36 rotatable about the axis of a driving sun gear 33. A planet wheel 37 rotatably mounted on the arm 36 engages the sun gear 33 and carries an arm 38 with a projecting pin 39 which co-operates with a segmental guide disc 41. When the sun gear 33 is driven continuously anti-clockwise the arm 36 is alternately driven anti-clockwise with the pin 39 engaging the guide 41 and clockwise under the action of a return spring 43 when the pin 39 disengages from the guide 41 to allow the pinion 37 to roll freely backwards on the sun gear 33. In both arrangements the return movements may be effected by gravity instead of springs and the toothed wheel 24 or 37 may be acted upon by a brake or detent which is operated by limit stops adjustable to vary the length or angle of stroke.
Patent GB-180657-A (GB)
Title: Method and apparatus for dehydrating, distilling and cracking hydrocarbon oils
IPC: C10G9/42
Filed: 1922-05-03
Abstract: 180,657. Linton, E. O. May 26, 1921, [Convention date]. Hydrocarbons, distilling and cracking; film evaporators.-In cracking heavy asphaltic crude or residual oils, the oil is passed through a dehydrating still, B, Fig. 2, then into a still C, in which it is vaporized and in which the vapours pass over surfaces heated to a cracking temperature. The distillate may be redistilled in a second still J, Fig. 3. The operations are conducted at atmospheric pressure. The stills B, C, are enclosed in a furnace chamber N fitted with deflectors 21, 26. Oil is fed by pipe 4 into a conical chamber 40 with perforations 6 at its outer edge from which the oil flows down the conical bottom 9 of the still. Vapours are drawn off through a pipe 12 to a condenser. The dehydrated oil passes down a pipe 13, on to a plate 15, which may be surmounted by a conical casing 14 and is perforated at its outer edge to distribute the oil over a deflector 16 and the conical base 42 of the still. The residual asphalt passes by a pipe 18 to a tank E. The vapours rise in contact with the heated walls 28, 23 to the outlet pipe 29 and to a condenser. Pyrometers T, T<1>, T<2>, T<6> are arranged in the stills, and the temperatures regulated, with or without admission of cool air through flues 10, 11 to the upper still, to obtain temperatures of 800-850‹ F. at T, 875‹ F. at T<1>, 900-950‹ F. at T<2> and 350-400‹ F. at T<6>. The distillate from the still C is fed by a pipe 31 to the still J, Fig. 3, heated by burners 32, 33. The still is surmounted by a chamber 34 through which passes an enlargement 35 of the pipe 31. The vapours pass away by pipe 36. The still is heated to about 500‹ F.