baber/WOPTO huggingface dataset:
Patent GB-1339517-A (GB)
Title: Low temperature cable
IPC: A01K63/04
Filed: 1971-04-19
Abstract: 1339517 Cables LICENTIA PATENT-VERWALTUNGS-GmbH 19 April 1971 [17 April  1970] 27233/71 Heading H1A A cable for use at low temperature comprises a hollow tube-shaped conductor 3 consisting of spaced helical elements layed up parallel to each other along the cable axis and surrounded by helically wound strip insulation 22, the pitch of the insulation helix being shorter than that of the conductor helix, the radial contraction of supporting elements inside the conductor, due to a fall in temperature, being equal to or greater and the radial contraction of the strip insulation being equal to or less than that of the conductor. The conductor supporting elements may be either rings (4) (Fig. 4, not shown) or helical elements (9) (Fig. 6, not shown). Rings (4) may be connected by means of resilient wires (5), (Fig. 5, not shown), fitting in grooves (7) around their circumferences. The outer sheath of the cable is composed of two corrugated tubes 16, 17, the space between them being evacuated. Insulation 22, which may comprise polytetrafluoroethylene, has projections 25, attached to a strip 24 around its circumference, which engage a channel 26 of housing 27. The housing 27, which is at low temperature, is secured to housing 28, which is at room temperature, by means of wires 29, of stainless steel or plastics material having low thermal conductivity. Several housing assemblies are provided along the cable where joints occur, the conductor ends being connected by welding or by high conductivity strips 21. The cable is secured to the ground at spaced points (2), (Fig. 1, not shown).
Patent GB-503534-A (GB)
Title: Improvements in or relating to the feeding of strip material through typewriters and other recording machines
IPC: B41L5/06
Filed: 1937-10-07
Abstract: 503,534. Memorandum appliances. STANDARD REGISTER CO. Oct. 7, 1937, No. 27275. Convention date, Oct. 8, 1936. [Class 16] [Also in Group XVI] In recording-machines such as autographic registers employing a manifolding pack consisting of two or more strips with or without interleaved transfer strips, and provided with pin feeding-devices co-operating with marginal holes in the strips, register of the strips is ensured by arranging the holes and, correspondingly, the pins in an irregular manner. Each strip 4, Fig. 3, of a pack is formed in the margins with staggered holes 6 which co-operate with correspondingly positioned pins 16, Fig. 6, on wheels 14, the arrangement causing the pack of strips to be registered longitudinally and laterally. The inner and outer holes in one margin may be arranged opposite the inner and outer, or the outer and inner holes in the other margin, or the holes in one margin may be longitudinally offset with respect to those in the other margin. The holes may be omitted from one margin. British Specification 408,125, [Group XVI], and U.S.A. Specification 1,896,836 are referred to.
Patent GB-764298-A (GB)
Title: Improvements in the polymerisation of acrylonitrile
IPC: C08F291/00
Filed: 1952-10-31
Abstract: Graft polymers are prepared by polymerizing acrylonitrile as the sole monomeric material in the presence of a preformed interpolymer of monomers containing ethenoid unsaturation which has not been separated from its polymerization medium before the addition of acrylonitrile.  Preferred monomers from which the interpolymers are formed are acrylamide and methacrylamide and their N-methyl, -ethyl, -n-propyl, -isopropyl, -n-butyl and -isobutyl substitution products, the methyl, ethyl, n-propyl and isopropyl esters of acrylic, methacrylic, acylaminoacrylic and carbalkoxyaminoacrylic acids, itaconamide and citraconamide and their N-methyl or -ethyl substitution products, vinyl acetate, propionate and butyrates, isopropenyl acetate, styrene, alpha-methylstyrene, para-acetaminostyrene, alpha-acetoxystyrene, ethylene, vinyl and vinylidene chlorides, ethyl and isopropyl vinyl ethers, methyl and ethy isopropenyl ketones, methyl and ethyl vinyl ketones, dimethyl, diethyl and diisopropyl maleates and fumarates, acrylic and methacrylic acids, fumaronitrile, acrylonitrile, methacrylonitrile, N-vinylphthalimide, and butadiene.  Polymerization may be carried out in an aqueous medium or in solution in a solvent such as acetonitrile or aqueous acetone in the presence of catalysts such as organic peroxides, e.g. benzoyl, acetyl, acetyl benzoyl, lauryl, oleoyl, triacetone and urea peroxides, tert.-butyl hydroperoxide, alkyl percarbonates, sodium and potassium perborates, alkali metal and ammonium persulphates, ketazines and azines; the oxidizing catalysts may be used together with reducing agents such as potassium and sodium bisulphites.  Aqueous media may contain emulsifiers such as sodium lauryl sulphate, sodium isobutyl naphthalene sulphonate, sodium 7-ethyl-2-methylundecan-4-sulphonate, sulphonated ethers, alkali metal or amine addition salts of sulphosuccinic acid esters, alkali metal salts of fatty acids containing from 12 to 20 carbon atoms, sulphonated fatty acid amides and sulphonated esters. Polymerization may also be carried out in the presence of hexyl, octyl, lauryl, dodecyl, and myristyl mercaptans as chain regulators. The graft polymers produced may be used in the preparation of dyeable fibres from solution in dimethyl formamide, either alone or in admixture with polyacrylonitrile. Specifications 358,534, [Group IV], 690,937 and 764,297 are referred to.
Patent GB-1481356-A (GB)
Title: Plaster composition having a ferrimagnetic additive for microwave energy treatment
IPC: B22C9/12
Filed: 1974-06-20
Abstract: 1481356 Plaster composition RAYTHEON CO 20 June 1974 [25 June 1973] 27461/74 Heading C1H [Also in Divisions H5, C3 and B5] A plaster composition for treatment by microwaves comprises a suspension of plaster in water to which is added powdered magnetite, a microwave energy absorbing material. For the formation of plaster moulds for making complex metal casting which will in turn be used to produce plastics parts having an intricate surface pattern, e.g. wood grain, leather, or fabric, a blend of 50% gypsum plaster with the balance primarily fibrous talc and some silica sand is mixed with water and magnetite powder additive. After formation in a master mould water is removed in a microwave oven, the magnetite additive absorbing energy and heating the water in the plaster composition by conduction. The water is also heated by direct absorption of microwave energy.
Patent GB-262035-A (GB)
Title: Improvements in and relating to gas compressors
IPC: F04B39/12
Filed: 1925-08-19
Abstract: 262,035. Haslam, Sir A. S. Aug. 19, 1925. Valves, arrangement of. - A pair of concentric sleeve valves provided with ports coacting with the cylinder ports e control the inlet or outlet of a piston pump.
Patent GB-341063-A (GB)
Title: Improvements in and relating to glow discharge tubes for amplifying, detecting and other purposes
IPC: B01D3/42
Filed: 1929-09-10
Abstract: 341,063. Discharge apparatus. SEIBT, G., 11, Hauptstrasse, and BLEY, H., 23, Bennigsenstrasse, both in Sch÷neberg, Berlin. Sept. 10, 1929, No. 27474. Convention date, Nov. 26, 1928. Addition to 241,062. [Class 39 (i).] In order to prevent a direct discharge from the cathode to the amplifying anode of the glow discharge tube described in the parent Specification, the edges of the discharge anode project beyond the straight line connections between the edges of the cathode and the amplifying electrodes. Fig. 2 shows diagrammatically a construction employing flat electrodes in which the holes in the discharge anode a<1> are smaller than those in the cathode k and the amplifying anode a<2> is also formed with openings so that at no point is the anode a<2> impinged upon by particles coming directly from the discharge zone. The controlling grid s is similarly arranged whereby grid current is reduced and it may surround the anode a<2>. Figs. 4, 5 show concentric arrangements in which the cathode k constitutes the outermost cylinder and the amplifying anode a<2> in the form of a rod or wire is disposed in the centre. Figs. 6, 7 illustrate modifications in which the order of the electrodes is reversed. Insulation is provided between the leads to the electrodes to avoid glow discharges between them.
Patent GB-616854-A (GB)
Title: Improvements in or relating to simple and compound microscopes
IPC: G02B21/20
Filed: 1946-09-13
Abstract: 616,854. Microscopes. ENOCK, J. K. Sept. 13, 1946, No. 27576. [Class 97 (i)] A binocular simple or compound microscope has two refracting or reflecting systems mounted thereon and movable into position alternatively to give a stereoscopic effect or " flat " vision. As shown, the prism system C1 of the type described in Specification 576,690 is in a carriage D hinged to the microscope at E and may be pivoted away to be replaced by a pivoted prism system in a carrier H giving a flat view. Alternatively the systems may slide.
Patent GB-426212-A (GB)
Title: Improvements in and relating to aerial insulators and the like
IPC: H01B17/12
Filed: 1933-10-07
Abstract: 426,212. Insulators. NUNNS, J. W., 46, George Street, Hanley, Stoke-on-Trent. Oct. 7, 1933, No. 27627. [Class 36] An aerial insulator comprises a porcelain body a having recesses b in its opposite ends and carrying eye-bolts d to which the aerial wire and the supporting wire are attached, the eye-bolts passing through the recesses b and screwing into threaded holes c in the porcelain body. The holes c may be connected by a channel h of reduced bore to provide a lightning discharge path between the ends of the eye-bolts. The recesses b may be covered by dished covers g attached to the eye-bolts d.
Patent GB-359652-A (GB)
Title: Improvements in the manufacture and production of products containing nitrogen
IPC: C01C3/18
Filed: 1930-09-16
Abstract: Nitrogenous products such as cyanates and cyanamides, suitable as fertilizers, are obtained by heating oxides, carbonates, or carbamates of the alkaline-earth metals, including magnesium, with cyanic acid to a temperature between 70 DEG  and 900 DEG  C., preferably at least 100 DEG  C.  Cyanuric acid, cyamelide, ammonium cyanate, or mixtures of ammonia and carbon monoxide in the presence of catalysts such as platinum which effect the formation of cyanic acid or ammonium cyanate, may be used in place of or in addition to cyanic acid, or urea may be employed when the initial material is a carbamate.  The pressure may be other than atmospheric and the presence of oxygen or gases supplying oxygen is preferably avoided. Cyanic acid mixed with such gases as nitrogen or ammonia may be passed over or through the initial materials, and the resulting gases, after removal of injurious constituents such as carbon dioxide and water, be returned to the reaction chamber. The process may be carried out together with the usual conversion of urea with alkaline-earth oxide or carbonate.  Below 400 DEG  C. calcium cyanate is obtained, at higher temperatures the cyanamide, while barium compounds give both cyanate and cyanamide at 600 DEG  C., and, after several hours at 650 DEG  C., cyanamide only.ALSO:Nitrogenous products such as cyanates and cyanamides, suitable as fertilizers, are obtained by heating oxides, carbonates, or carbamates of the alkaline-earth metals, including magnesium, with cyanic acid to a temperature between 70 DEG  and 900 DEG  C., preferably of at least 100 DEG  C.  Cyanuric acid, cyamelide, ammonium cyanate, or mixtures of ammonia and carbon monoxide in the presence of catalysts such as platinum which effect the formation of cyanic acid or ammonium cyanate, may be used in place of or in addition to cyanic acid, or urea may be employed when the initial material is a carbamate.  The pressure may be other than atmospheric and the presence of oxygen or gases supplying oxygen is preferably avoided.  Cyanic acid mixed with such gases as nitrogen or ammonia may be passed over or through the initial materials, and the resulting gases, after removal of injurious constituents such as carbon dioxide and water, be returned to the reaction chamber. The process may be carried out together with the usual conversion of urea with alkaline-earth oxide or carbonate. Below 400 DEG  C. calcium cyanate is obtained, at higher temperatures the cyanamide, while barium compounds give both cyanate and cyanamide at 600 DEG  C. and, after several hours at 650 DEG  C., cyanamide only.
Patent GB-392425-A (GB)
Title: Improvements in or relating to very short wave electrical oscillation generating arrangements
IPC: H03B9/01
Filed: 1932-10-05
Abstract: 392,425. Thermionic valves ; valve generating circuits. TELEFUNKEN GES. FœR DRAHTLOSE TELEGRAPHIE, 12, Hallesches-Ufer, Berlin. Oct. 5, 1932, No. 27718. Convention date, Oct. 5, 1931. [Classes 39 (i) and 40 (v).] Oscillation generators for wavelengths of one decimetre or less comprise a valve having in one envelope two sets of electrodes operating in pushpull, and additional electrodes r, Fig. 1, form plates of condensers capacitatively back-coupling the anode a of each set to the grid g of the other set to produce oscillations. The two anodes a are in the form of discs joined by a flat, U. shaped lead l to form an inductance and are mounted outside the two grids g on opposite sides of a common cathode k. The electrodes are each connected to one grid g by a short lead and are in capacitative relation to an anode a. The grids g may be of the form shown in Figs. 4a or 4b and are connected to the centre point of the cathode k through leak resistances w inside the envelope. An inductance e is inserted in the lead l‹ to the anode battery, and the filament leads l<1> form capacities with the lead l‹. A dipole aerial d is capacitatively coupled to the anodes a by elements c<1>.
Patent GB-187233-A (GB)
Title: Improvements in and relating to electron discharge devices
IPC: H03F1/08
Filed: 1922-10-12
Abstract: 187,233. British Thomson - Houston Co., Ltd., (Assignees of Hull, A. W.). Oct. 13,1921, [Convention date]. Vacuum tubes.-Thermionic apparatus for the amplification of high or low frequency currents comprises a number of valves in cascade, each having an anode, a cathode, and two grids, one of which receives the input potential and the other is maintained at a higher positive potential than the anode; and the potential of one anode is directly impressed on the input grid of the next valve by a conductive connection. The fixed-potential grids may be omitted if the plate is prevented from emitting secondary electrons by blackening, roughening, or corrugating its surface. As shown, three valves 1, 2, 3 are connected in cascade, the three filaments being connected in parallel to a heating-battery 8, and the three plate circuits energized by a high-potential source 9, 10. The input currents are passed through a resistance 17 connected across the grid 5 and filament 4 of the valve 1, and the plate of this valve is directly connected to the grid 5 of the valve 2, similar connections being made between the valves 2, 3. A second grid electrode 7, placed between the input grid 5 and the plate 6, and charged to the full positive potential of the source 9, 10, may be provided in each valve. The high-potential grid 7 may be placed between the filament and the input grid 5, giving a negative resistance to the circuit of the grid 5. The grid 7 when placed between the plate and the input grid 5 serves as a screen between these electrodes and prevents self-oscillation.
Patent GB-1472027-A (GB)
Title: Rubber composition
IPC: C08L7/00
Filed: 1975-07-01
Abstract: 1472027 Vulcanization accelerators YOKOHAMA RUBBER CO Ltd 1 July 1975 [2 July 1974] 27734/75 Heading C3E Rubber is vulcanized using as accelerator an alkylene-bis-dithiocarbamate and an amineisocyanate addition compound. Examples are given in which natural rubber formulations containing sulphur are vulcanized using the ferric or zinc salt of ethylene-bisdithiocarbamic acid and a pyrrolidine/diphenylmethane-p,p<SP>1</SP>- diisocyanate adduct.
Patent GB-890898-A (GB)
Title: Improvements in and relating to electrical shield and socket assemblies
IPC: H01R33/76
Filed: 1959-08-13
Abstract: 890,898. Two-part couplings. UNITEDCARR FASTENER CORPORATION. Aug. 13, 1959 [Aug. 18, 1958], No. 27770/59. Class 38 (1). A shield and socket assembly comprises a grounding contact 20 held in the socket body 10 by a lug 25 and having a downwardly extending portion 27 with a protuberence 29 which is engaged by a rib 32 on the shield 4. The socket body 10 has openings receiving contacts with terminals 18 which, together with the terminal 26 of contact 20, are bent to engage printed contacts on a board 1.
Patent GB-191502-A (GB)
Title: Improvements in or relating to apparatus for casting bearing metal and the like
IPC: B22D19/08
Filed: 1921-10-19
Abstract: 191,502. Powell, A. D., and Lake & Elliot, Ltd. Oct. 19, 1921. Foundry ladles are provided with an orifice 14 adapted to make a tight joint with runner inlets 4 of moulds 1. The contacting surfaces are preferably conical. The ladle 12 has a valve 16 which can be raised by a handle 22 and locked by a pin engaging holes 23, 24 and is recessed at 13 to avoid heating the mould vent 5.
Patent GB-482905-A (GB)
Title: Improvements in or relating to the conversion of hydrocarbon oils
IPC: C10G55/02
Filed: 1936-10-13
Abstract: Hydrocarbon oils are cracked and the products fractionated to separate a fraction comprising gasoline vapours and olefinic gases which are subjected to a solid calcined, preferably siliceous, material mixed with phosphoric acid to convert the olefines into hydrocarbons of high anti-knock value, and remove gum-forming constituents. Heavy oils supplied by a pump 3 are cracked by passing them through a cracking coil 6 heated to 450-540 DEG C., and a vaporizing and reaction chamber 16. The cracked products pass with reduction of pressure into a vaporizer 13 and the vapours evolved are fractionated in a tower 19 from which bottoms are returned to the coil 6. The vapours passing off at the top of the tower are in part condensed in a cooler 21 and collected in a receiver 24 for return as reflux through a line 28 to the tower 18.  The remaining vapours and the gases separated in the receiver 24 are passed through line 70, 35 to a <PICT:0482905/III/1> polymerization tower 39 filled with catalyst supported on a tray 41.  The treated vapours pass to a tower 46 and thence to a condenser 49 and receiver 52 while the heavy ends produced in the tower 40, 46 are collected in a receiver 59 and returned through a line 65 to mix with the cracked products passing to the tower 18.  The catalyst used in the tower comprises: (1) siliceous or aluminous material, e.g. alumina, bauxite, fuller's earth, bentonite, clay, infusorial earth, tonsil, artificially prepared silicates, e.g. silocel; (2) siliceous carriers, e.g. fire clays, p  pumice, etc.; (3) organic binding material, e.g. starches, sugars, glue; (4) alkaline earth oxides, e.g. calcium, barium, strontium, magnesium and zinc oxide; (5) chlorides of base elements. Any of these materials may be mixed with the phosphoric acid (ortho, pyro, or meta) and the mixture calcined at 180-220 DEG C., and ground.  The oxides are converted into phosphates by the treatment. Specifications 437,188, 457,997, and 464,753, are referred to.
Patent GB-489025-A (GB)
Title: Improvements in beer and like pumps
IPC: F04B9/14
Filed: 1936-10-13
Abstract: 489,025. Pistons. RIGID & FLEXIBLE COUPLINGS, Ltd., and BRIERLEY, H. H. Oct. 13, 1936, No. 27791. [Class 122 (i)] [Also in Group XXVIII] In a beer &c. pump the bucket is connected to its rod by a ball joint and is rotated by the passage of the liquid. The lower end of the rod 3 terminates in a ball 4 movable in a disc 62, which has lateral movement in slots in the bucket. The latter is bored, forming passages separated by ribs 2 which guide the ball valve 5. The passages are inclined in order that the liquid may impart rotation to the buckets. The seating of the suction valve 9 is formed with similar ribs 84. In a modification, Fig. 10, the ball on the bucket rod is secured in a socket by a spider 90 attached to the bucket. The spider is formed with inclined surfaces 100 on which the liquid acts. Reference has been directed by the Comptroller to Specifications 17327/87, [Class 102], 388,838, and 396,227, [both in Group XXVIII].
Patent GB-824561-A (GB)
Title: Improvements in or relating to toggle mechanisms
Inventor: RIORDAN EDWARD JOHN
IPC: F16K31/56
Filed: 1954-09-27
Abstract: 824,561. Linkwork. ARON ELECTRICITY METER Ltd. Dec. 28, 1955 [Sept. 27, 1954; Dec. 15, 1954], Nos. 27872/54 and 36370/54. Class 80 (3). [Also in Group XXIX] A toggle arrangement for holding a valve closed but being adapted to be tripped to open said valve comprises a link 58 pivoted at 73 to a fixed point and at 60 to a spring-loaded telescopic link 59, the other end of which is pivoted at 64 to a lever 55 for operating a valve member 28 through a rod 52 and a strap member 35 encircling a valve seat body 7. The lever 55 is loaded in a valve opening direction by a spring 70 which is anchored to a link 71 pivoted at 75 and having an abutment 71a engaging the link 58 to urge the toggle to break. The breaking of the toggle to open the valve 28 is restrained by a tripping mechanism comprising a plate 80 and a toothed wheel 66 rotatable on a shaft 67 and co-operating with a gear segment 65 on an extension of link 58. Anti-clockwise movement of plate 80 to release the toggle is restrained by the tail end of a lever 91 pivoted at 92 engaging a tooth 88 on a V-shaped lever 81 pivoted on the plate 80 and loaded by a spring 84. The lever 91 is adapted to be tripped by a lever 94 operated by an aneroid stack 69 responsive to atmospheric pressure, which then releases lever 81 and plate 80 to break the toggle and open valve 28. The valve 28 may control the supply of oxygen from an inlet 17 to an outlet 6 for the breathing apparatus used by the pilot of an aircraft. The toggle may also be broken manually by operation of the shaft 67 which carries a lever 86 which can engage one limb of the lever 81 to trip it and release plate 80. The lever 86 and shaft 67 also serve for resetting the toggle mechanism and closing the valve 28. Bellows 37 and 45 are secured to the valve operating strap member 35 and are open internally to atmospheric pressure so that there are no unbalanced forces acting on this member.