baber/WOPTO huggingface dataset:
Patent GB-651590-A (GB)
Title: Improvements in and relating to electric circuits for frequency dividing
IPC: H03B19/12
Filed: 1948-07-30
Abstract: 651,590. Frequency dividing circuits. DORMAN, S. R. C. July 30, 1948, No. 20394. [Class 40 (vi)] Oscillations of frequency F are applied to the grid G1 of a valve V with two control grids, the anode circuit L1, C1 being tuned to the frequency F/n while a second circuit L2, C2 is coupled to the other grid G3 and also to the anode circuit in such a manner as to be maintained in oscillation at the frequency F(n - 1)/n. The coupling means comprises a condenser C4, rectifier D and shunt resistance R1, so arranged that the rectifier conducts only on the positive peaks of the alternating voltage developed at the anode of the valve V. A gas-discharge tube N may be connected between the grid G3 and ground in order to prevent the potential on the grid, e.g. upon switching the circuit on, from reaching a sufficiently positive value for the valve to have a negative resistance characteristic.
Patent GB-1212015-A (GB)
Title: Improvements in and relating to meshing screw-rotor compressors
Inventor: SCHIBBYE LAURITZ BENEDICTUS
IPC: F04C18/16
Filed: 1967-05-03
Abstract: 1,212,015. Rotary positive-displacement compressors. SVENSKA ROTOR MASKINER A. B. April 25, 1968 [May 3, 1967], No. 20454/67. Heading F1F. A rotary compressor has parallel bores 16, 18 containing intermeshing male and female screwrotors 26, 28 with shafts in chambers 48, 52, 60, 64 wherein oil leaking from bearings for the shafts is collected and thence drawn through openings 74, 76, 78 into the bore 16 and a channel 20 for lowpressure working-fluid. The opening 74 is situated in the bore 16 such that it can communicate with the channel 20 through the grooves of the female rotor and is therefore in a region of comparitively low-pressure. Bearings 50, 62 receive pressurized oil through annular grooves 68, 70 so as to minimize leakage of working fluid from the bores. Oil leaking from the bores lubricates bearings 46, 58. The oil issuing from the opening 74 lubricates and seals the rotors, additional oil being fed to the bores through nozzles (84), Fig. 2 (not shown). The opening 74 may be replaced by a similar opening at the high-pressure end of the bore 16, Fig.4 (not shown). In a second embodiment, Fig. 3, oil is delivered to plain bearings 86, 90, 96, 104 and a seal 112 through channels 108, 110, 122, thrust bearings 92, 106 being lubricated by oil leaking from the adjacent plain bearings. Surplus oil flows into the bore 16 through an opening 118. The channel 122 receives pressurized oil through a chamber 102 for a thrust-balancing piston 100.
Patent GB-690858-A (GB)
Title: Improvements in band conveyor systems
Inventor: PALMER AUSTIN RICHARD
IPC: B65G47/66
Filed: 1951-08-30
Abstract: 690,858. Endless belt conveyers. BAKER PERKINS. Ltd. Aug. 30, 1951. No. 20536/51. Class 78 (i). In an endless band conveyer system having two or more successive conveyer lengths in closely disposed end-to-end relationship, the gap between the upper runs of adjacent conveyer lengths is bridged by resilient means affording support for an article in transfer from one conveyer surface to the next but yieldable to an operator's hand should it become entangled or caught in the oncoming conveyer band. In the embodiment shown in Fig 2, conveyers A, B comprising endless bands built-up of rods 5 have adjacent sprockets 4 supported on bearings 3 on brackets 1 secured to side frame elements 2 and the gap between the conveyers is bridged by a coiled spring 7 supported by hooks 8 on the brackets 1. The bridge member may comprise a rubber strip or tube, a rubber bar of square section, or an arrangement of coiled springs spaced around the periphery of a circle, and may be tapered so as to bridge a tapering gap such as occurs between the end of a rectilinear conveyer length and a curved conveyer length.
Patent GB-1039129-A (GB)
Title: Improvements in or relating to gate valves
IPC: F16K41/04
Filed: 1965-05-14
Abstract: 1,039,129. Valves. FISENWERK RÍDING- HAUSEN. May 14, 1965 [May 30, 1964], No. 20545/65. Heading F2V. The threaded stem 2 of a gate valve is displaced axially by a sleeve nut 3 itself restrained axially through a collar 4; rotation of the stem 2 is prevented by the seats with which the tapered gate coacts. The nut 3 is sealed to the body 1 by 0-ring 6 whilst the opposed faces of the nut and stem incorporate 0-rings 8, 9 which latter undergo a helical movement relative to the opposed nut or stem face during valve actuation. The rings 8, 9 must be spaced such that there is no interference therebetween within the valve stroke; any dirt on the stem and/or nut is wiped off by the 0-rings.
Patent GB-1085231-A (GB)
Title: Improvements in or relating to reciprocating compressors
Inventor: HUNT MICHAEL STANLEY
IPC: F01B3/00
Filed: 1963-05-23
Abstract: 1,085,231. Combustion-product engines driving compressors. BRISTOL SIDDELEY ENGINES Ltd. Aug. 19, 1964 [May 23, 1963], No. 20547/63. Headings F1 N and F1S. An engine and compressor unit comprises a casing 1 having a plurality e. g. six engine cylinders 2 arranged in a circle each having slidable therein an engine piston 4 coaxially connected by a ball ended rod 24 to a compressor piston 18 slidable in a cylinder 19 closed by a head 20 provided with concentric automatic inlet and outlet poppet valves 25, 26. Each head 20 has a collar 29 and is secured to the casing 1 by arms 21 passing through slots 22 in the respective engine piston 4. Each collar 29 has a central opening closable by one of the inlet valves 25 and around which one of the annular outlet valves 26 is slidable. The pistons 4 are reciprocated by the combustion of fuel with gas such as decomposed hydrogen peroxide supplied in sequence to each cylinder 2 through a passage 10 in a valve 11 rotatable by a shaft 3 driven by a swash plate 7, 8 actuated by the conical ends 6 of the pistons 4. Each cylinder 2 contains a ring of exhaust ports 14 communicating with an annular exhaust manifold 15. The gas is compressed in, a first stage comprising four cylinders connected in parallel, and a second stage consisting of the remaining two cylinders also connected in parallel. Gas passes from an annular intake chamber 41 successively into each low pressure compressor cylinder 19 through ducts 30 and inlet valves 25. Thereafter the compressed gas passes the outlet valves 26 into ducts 33 communicating with an inter-stage chamber 43 wherefrom ducts 30 communicate the gas to the two high pressure cylinders discharging through outlet pipes 44.
Patent GB-295824-A (GB)
Title: Improvements in the manufacture and production of aromatic amines from nitro-compounds
IPC: C07C209/36
Filed: 1927-08-04
Abstract: 295,824. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Aug. 4, 1927. Amines; aniline; m- and p-phenylenediamine; p-aminophenol.-The reduction of aromatic nitrocompounds to the, corresponding amines is effected with solutions containing readily soluble sulphides, in an amount less than that theoretically necessary, in an atmosphere! of hydrogen and/or carbon monoxide and at an elevated temperature and pressure. The hydrogen and/or carbon monoxide, may be mixed with inert gases, and it is preferred to operate in the presence of a catalyst, in which connection reference is made to substances of large superficial area, such as silica, gel and alumina gel, and to heavy metals and their oxides, hydroxides, sulphides, and carbonates. Since the; nitro-compound converts the, sulphides into products (thiosulphates. polysulphides, and sulphur) which are reduced again by the reducing gases, the sulphides need not be added as such but may be replaced by solutions of thiosulphates or polysulphides or by solutions of a base' in admixture with sulphur. Since, also, the decomposition of thiosulphate, under the reaction conditions, results in part in the production of sulphate, which is not again reduced, it is possible so to select the amount, of sulphide &c. taken in the first place that the reaction product consists entirely of the amine and an alkali metal or ammonium sulphate, solution. According to the examples (1) nitrobenzene, ammonium sulphide solution, and iron sulphide, are heated to 150‹ C., while stirring, under a pressure of 100 atmospheres of hydrogen, the. pressure being maintained by forcing in hydrogen from time to time; aniline free from nitrobenzene is obtained; (2) m-dinitrobenzene, ammonium sulphide, solution, and iron powder are heated at 180‹ C. in the presence of water gas under a, pressure of 220 atmospheres; the product is m-phenylenediamine; (3) p-nitraniline, ammonium solution, sulphur, and reduced iron are, stirred together at 180‹ C. under a pressure of 120 atmospheres of hydrogen; p-phenylenediamine is recovered from the product; p-nitrophenol may be reduced similarly to p-aminophenol, ferrous oxide being used as cataylsts; (4) nitrobenzene, ammonium sulphide solution, and iron are heated with carbon monoxide to 160<0> . under a pressure of 140 atmospheres; the product contains aniline; (5) a mixture of nitrobenzene and ammonium polysulphide solution is passed at 170-180‹ C. over ferric oxide in hydrogen having a pressure of 140 atmospheres; the products are aniline and a solution of ammonium sulphate free from sulphide and thiosulphate.
Patent GB-1184354-A (GB)
Title: De-icing installation for aircraft
IPC: B64D15/12
Filed: 1967-05-03
Abstract: 1,184,354. Screw propellers; de-icing aircraft. LICENTIA PATENT-VERWALTUNGSG.m.b.H. and HAMBURGER FLUGZEUGBAU G.m.b.H. 3 May, 1967 [4 May, 1966], No. 20601/67. Headings B7V and B7W. [Also in Divisions F1 and H5] An aircraft de-icer of the kind wherein some resistors 12 are supplied continuously and some resistors 11 are supplied cyclically with heating energy, and wherein a timing device 13 produces switch-on commands for the resistors 11, is characterized by a second timing device 14 for producing switch-off commands at a point lying between two successive switch-on commands in dependence upon the surface temperature of the resistors 12, temperaturesensing elements 15 and 16 being arranged in the strip resistors 12. Heating mats in which the resistors 11 are embedded are situated on the lift surfaces 10 of the aircraft. Timing device 13 also controls heating mats (not shown) for the tail unit or the propulsion system (air inlet and propellers), which mats are cyclically connected to a generator, the device 13 producing switch-on commands therefor and possibly switch-off commands also. The switch-off commands from device 14 are variable between each two successive switch-on commands of device 13, Figs. 3a, 3b (not shown).
Patent GB-1092460-A (GB)
Title: Sealess strap connections
IPC: B65D63/04
Filed: 1966-05-10
Abstract: 1,092,460. Straps. SIGNODE CORPORATION. May 10, 1966 [June 30, 1965; Oct. 22, 1965], No. 20664/66. Heading A4X. [Also in Division E2] A connection between overlapped lengths 20, 30 of metal strap comprises a tandem array of longitudinally spaced lock joints on each of which a section of one strap portion interlocks with a mating section of the other strap portion, each section of each joint having a single elongated staggered slit 22 or 32 defined by lengthwise end regions 25, 26, or 35, 36 and an intermediate lateral jog region 27 or 37 joining the end regions, the jog region 27 or 37 and one end region forming a locking shoulder adapted to enter medially and engage in one-way interlocking relation in an end region of the staggered slit of the mating section. The slits may be placed at graduated spacings along the strap and the jog portions may be arranged at an angle of other than 90 degrees to the centre lines of the straps. In another arrangement, Figs. 6-9 (not shown), each slit is offset laterally from the centre line of the strap, and a laterally offset straight slit is provided opposite to each staggered slit, each such pair of slits defining a central wing tongue portion flanked by marginal strap portions, the tongue portion being arranged, in the array, to form a balanced arrangement with tongues directed towards both edges of the strap.
Patent GB-425895-A (GB)
Title: Improvements relating to the headlamps of road and other vehicles
IPC: B60Q1/068
Filed: 1933-07-22
Abstract: 425,895. Directing vehicle lamps. WERRY, W., Beaulieu, Woodhouse Road, Finchley, London. July 22, 1933, No. 20675. [Class 75 (iii)] Headlamps a are mounted on sleeves b connected by levers d and a link e for simultaneous rotation about vertical pillars c whereby the beams of light may be made to converge towards or diverge from one another, and the pillars c are rotatably mounted upon sleeves g, carried by a horizontal shaft g<1>, for tilting the lamps. Tilting is effected by means of a Bowden wire h connected to an arm i on a cross shaft il connected by arms k and links l with projections m on the sleeves carrying the pillars c, and swivelling may be controlled by means of a Bowden wire f.
Patent GB-228495-A (GB)
Title: Improvements in cushion tires
IPC: B60C7/12
Filed: 1924-09-02
Abstract: 228,495. Brubaker, W. A. Jan. 30, 1924, [Convention date]. Non-metallic elastic bodies. - A cushion tyre is formed with spaced transverse cavities 16 extending alternately from the sides to about the middle of the tyre body. The inner end of each cavity is rounded at 23 and continued by a smaller cavity 24. The tread is formed with staggered zigzag grooves 28 arranged over the solid portions of the tyre.
Patent GB-1045656-A (GB)
Title: Leak-tight joint between pure or alloyed aluminum and another metal
Inventor: DEVIN BERNARD
IPC: G21C3/10
Filed: 1965-05-17
Abstract: 1,045,656. Casting composite articles and Joints; continuous and centrifugal casting- machines. COMMISSARIAT A L'ENERGIE ATOMIQUE. May 17, 1965 [May 27, 1964], No. 20783/65. Heading B3F. [Also in Division G6] For joining a mass of pure or alloyed aluminium to a cylindrical member 14 of titanium, nickel, " Monel," " Inconel " (Trade Marks), or stainless steel, e.g. to form a device to be welded or brazed to the cap closure for a nuclear fuel can, with a stainless steel tube 14 as a passage for a thermocouple through the can, the part of the member 14 to be joined is inserted in a mass of molten aluminium and rotated at high speed about its axis before cooling the aluminium and machining it. The joining of the metals may be done in vacuum or inert gas and the tube 14 may be cooled by water circulation in an inserted sleeve 34, Fig. 3 (not shown). The tube 14 is first degreased and may then be machined to increase its surface roughness. It is rotated periodically in the molten aluminium to wet it. By withdrawing the tube 14 from the molten metal before complete cooling, a part only of the aluminium is raised, Fig. 3 (not shown), and if the tube rotation is continued while raising the aluminium is formed as a tubular member 46<SP>11</SP>, Fig. 4 (not shown), whose thickness varies according to the rate of withdrawal.
Patent GB-751843-A (GB)
Title: Improvements in or relating to magnetic record carriers
IPC: G11B5/74
Filed: 1951-09-03
Abstract: 751,843. Magnetic sound records. FRIES G., and POLLOPAS PATENTS, Ltd. Sept. 3, 1952 [Sept. 3, 1951], No. 20786/51. Class 40(2) [Also in Group XXXV] A magnetic record carrier, comprises a laminated recording layer composed of a plurality of layers 0.1Á to 0.2Á thick of magnetizable material separated from each other by a layer of non-magnetic material. The magnetic layers may be vapour-deposited in a vacuum as in Specification 751,842 [Group XXXV]. ...
Patent GB-531302-A (GB)
Title: Improvements in and relating to dovetailing attachments for use on spindle moulding machinery
IPC: B27F1/12
Filed: 1939-07-18
Abstract: 531,302. Dovetailing. ROBINSON & SON, Ltd., T., and ROBINSON, F. B. July 18, 1939, No. 20801. [Class 145 (i)] An attachment for a spindle moulding- machine enabling dovetails to be cut in pieces of timber 27, 28 which are clamped respectively to an upright 9 and to a base 6, comprises a stop bar 21 which is automatically adjusted to vary the depth of cut according to the thickness of the timber 27. The bar 21 underlies a comb-plate 29 guiding the cutter 8 in relation to the timber and is actuated by articulated links 18, 20 pivoted respectively to the upright 9 and to the stop bar. Pins 16 adjustable in nuts on the link 17 engage projection 15 on the cramp member 11. In a modification links, such as 18, pivoted on upward projections from the comb-plate 29 carry cams each engaging a projection at each end of the stop bar which is pressed rearwardly by springs.
Patent GB-1186721-A (GB)
Title: Photographic Emulsions
Inventor: JONES JEAN ELMORE
IPC: G03C1/12
Filed: 1967-05-05
Abstract: 1,186,721. Direct-positive photographic silver halide emulsions. EASTMAN KODAK CO. May 5, 1967 [Jan.17, 1967], No.20918/67. Heading G2C. A direct-positive photographic silver halide emulsion comprises a fogged silver halide emulsion containing a pyrylium, thiapyrylium or selenapyrylium salt dye, preferably having the general formula:- where D is oxygen, sulphur or selenium, X is an acid anion and R 1 , R 2  and R 3  are each alkyl, alkenyl or aryl, any of which may be substituted, or cycloalkyl or alkoxy. The emulsion may be fogged by exposure to light or chemically using stannous chloride, formaldehyde, hydrazine, thiourea dioxide or tetra (hydroxymethyl)-phosphonium chloride, optionally in the presence of gold, rhodium, platinum, palladium or iridium salts. The dyes may be incorporated by adding dye solutions to the emulsions, or by treating the coated silver halide material with the dye solution.
Patent GB-281013-A (GB)
Title: Improvements in or relating to wheel mountings for the wheels of aircraft
IPC: B64C25/62
Filed: 1926-08-25
Abstract: 281,013. Sloper, T. Aug. 25, 1926. Shock-absorbers, applications of.- A landing carriage for aircraft of the kind wherein a wheel is mounted on an inclined axle A pivoted to the machine at a point higher than its outer end and controlled by a spring strut B, has means for permitting movement of the wheel along the axle under spring control to prevent excessive lateral stress on the wheel during landing. The wheel is mounted on a sleeve C between a fixed flange C' and a removable split clip C<2>. A pin C' passes through the sleeve and through slots A<3>, A<4> in the tubular axle. and engages a movable abutment A<5> for a spring A<6> mounted within the axle. A ring A<8> normally prevents withdrawal of the sleeve. A bolt C<5> passes through the split end of the clip C<2> and through the end of the pin C3. Alternatively the wheel hub may slide directly on the axle end engage at its inner end with a flange connected to a spring within the axle.
Patent GB-406684-A (GB)
Title: Improvements in invalid and like beds
IPC: A61G7/005
Filed: 1932-07-26
Abstract: 406,684. Adjustable bedsteads. HOWORTH, H. O., 32, Dallington Road, Northampton. July 26, 1932, No. 21012. [Class 52 (ii).] An adjustable bedstead comprises a movable mattress frame D pivoted at a point between the ends of a main frame C and freely adjustable up to a vertical position. Three bars F are secured to the movable frame and are pivoted at G to one end of a bar H, the other end of which is pivoted to a nut K working on a screw L. The screw L is supported by brackets M, N on transverse bars O, O<1> respectively and rotation of a handle P produces angular adjustment of the frame D. A foot rest in two parts Q, R is adjustable by its arm S engaging fixed pegs T on the frame D.
Patent GB-1464243-A (GB)
Title: Composite materials
IPC: C08K3/00
Filed: 1974-07-31
Abstract: 1464243 Composite materials IMPERIAL CHEMICAL INDUSTRIES Ltd 31 July 1974 [3 May 1973] 21017/73 Addition to 1373214 Headings C3R and C3P Composite materials comprise a filler material consisting substantially of particles of compact shape, which particles form classes of four different sizes, the proportions being such that when mixed in the absence of polymer the filler particles themselves would occupy at least 70% of the total volume of particles and interstices, and a polymer adhering to the particles and having a volume of from 100 to 200% of the volume of the interstices. The materials may be prepared by mixing the filler with a polymer or polymer-forming ingredient, shaping the mixture and causing the polymer or polymer-forming ingredient to furnish a polymer in solid form. In Examples (1) glass spheres of particle sizes 100 Á, 270 Á, 700 Á and 1400 Á are mixed into polyurethane precursors and (2) sand particles of particle sizes 1À0- 1-4 mm., 0À60-0À85 mm., 0À15-0À25 mm. and 0À075-0À090 mm. were mixed with an unsaturated polyester composition, cyclohexanone peroxide and a cobalt soap composition.
Patent GB-1472356-A (GB)
Title: Instrument for secondary ion mass spectroscopy
IPC: H01J49/42
Filed: 1975-05-16
Abstract: 1472356 Secondary ion spectroscopy LEYBOLD - HERAEUS - VERWALTUNG GmbH 16 May 1975 [18 May 1974] 21017/75 Heading H1D An ion lens system 4, 5, 6 focusing secondary ions from a sample 1 into a quadrupole analyser 2 is provided with a diaphragm 9 which is similar in shape to the entrance apertures 16, 12 of the lens system and of the analyser and is of such a size that straight lines such as 17, 18 pass through corresponding points on the peripheries of the similar shapes, thereby preventing transmission of unwanted particles without impeding the desired particles.
Patent GB-275991-A (GB)
IPC: C01C1/16
Filed: 1927-08-09
Abstract: 275,991. Chemische Fabrik Gross- Weissandt Ges., and Seidler, P. Aug. 10, 1926, [Convention date]. Crystallizing. - Large crystals of ammonium chloride are prepared by carrying out the crystallization in presence of aqueous extracts obtained by extracting with hot water which may contain hydrochloric acid, &c., grasses, weeds, leaves, stalks, foliage, bark, roots, fruits, seeds, dried meadow hay, dry shreds of sugar beet, dried malt germs &c. The crystallization may take place from solutions which contain acids or salts such as sodium chloride.
Patent GB-630343-A (GB)
Title: Improvements in electric lamp sockets
IPC: H01R33/08
Filed: 1947-08-01
Abstract: 630,343. Lamp-holders. SYLVANIA ELECTRIC PRODUCTS, Inc. Aug. 1, 1947, No. 21084. Convention date, Feb. 13, 1943. [Class 38 (i)] A holder for a fluorescent lamp comprises an insulating body 1, the upper end of the front face of which is provided with a triangular opening 18, the apex of the opening forming a slot 20 through which the lamp pins 5 are inserted and rotated to bring them into contact with resilient blade contacts 3 formed at their upper ends with hook portions 6 which retain the pins 5. The blades are retained in position by abutments 8, 9 and by the back cover of the holder. A stud 16 on a tapered support 4 is provided in the opening 18 which, in combination with a cross-plate 17 at the rear of the slot 20, serves to guide the pins 5 into the holder. The front of the holder is bevelled at 23 to provide clearance for the lamp base.
Patent GB-256404-A (GB)
Title: Improvements in lubricators
IPC: F16N21/06
Filed: 1925-08-24
Abstract: 256,404. Fisher, J. G., and Fisher, W. D. Aug. 24, 1925, Lids, means to prevent loss of.-The cover D of a wage cup or other receptacle A is provided with a pair of downwardly extending lugs c pivoted on the free ends b of spring arms B secured to the outer surface of the cup, the lugs c having inclined faces c<2> contacting with the surface of the cup, whereby the arms B are bent away from the cup and exert a pressure tending to retain the cover in either the closed or open position.