baber/WOPTO huggingface dataset:
Patent GB-1089800-A (GB)
Title: Improvements in or relating to the control of d.c. machines
Inventor: HAYTHORNE STEPHEN ANDREW RICHA
IPC: H02P9/36
Filed: 1963-09-10
Abstract: 1,089,800. Excitation arrangements for D.C. machines. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 2, 1964 [Sept. 10, 1963], No. 35717/63. Heading H2A. The excitation current in the field winding 10 of a D.C. machine 7 is controlled by an amplifier in accordance with the current flowing in a circuit which is connected in parallel with interpole winding 2 of the machine and includes an auxiliary winding 3 inductively coupled to winding 2. As shown the amplifier comprises an amplidyne 9 with a control winding 6, but a conventional amplifier could be used. The current in control winding 6 will have components proportional both the rate of change of current and the actual current in armature 7 and it is stated that this control system will give a constant current output when the machine operates as a generator. The reference and other control windings of the amplidyne are not shown.
Patent GB-907615-A (GB)
Title: Improvements relating to extensible beams
Inventor: GOSTLING PETER ERIC
IPC: E04G11/56
Filed: 1957-11-16
Abstract: 907,615. Beams for floor shuttering. KWIKFORM Ltd. Oct. 28, 1958 [Nov. 16, 1957; Dec. 19, 1957; Feb. 5, 1958], Nos. 35761/57, 39567/57 and 3717/58. Class 20 (2). A beam for supporting floor shuttering comprises an inner beam, Fig. 4, on either end of which telescope outer beams, Fig. 3, the upper faces of both beams being slightly convex. The inner beam comprises an upper boom 12 connected by a zig-zag bar 15 to a lower, tubular boom 14 and the beams are secured together by a concave pressure plate 29 mounted on a vertical screw 30 which is threaded in a nut on a tension bar 24. The boom 12 comprises a pair of angle sections, one of which has slots 13 for welding material. The outer beam comprises a U-section 22 which is braced against the bar 24 by flanges 25, 27. The arms of the section 22 are inturned and engage in slots 19 in end plates 18 on the inner beam. Brackets 28 are fitted to both beams. Specification 907,616 is referred to.
Patent GB-755497-A (GB)
Title: Improvements in or relating to oscillators comprising feedback circuits inclnding very frequency-selective elements, for example a crystal
IPC: H03B5/34
Filed: 1954-12-10
Abstract: 755,497. Valve oscillator circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Dec. 10, 1954 [Dec. 14, 1953], No. 35812/54. Class 40 (6). An oscillator comprises a first feedback circuit including a highly frequency selective element, for example a crystal or a cavity resonator, for producing local oscillation of a frequency determined by the selective element and a second feedback circuit selective to a subharmonic of the oscillation frequency and for producing oscillation of a frequency equal to said subharmonic, the local oscillation being supplied to the second feedback circuit for synchronizing the subharmonic oscillation. The Figure shows a valve V caused to oscillate at a frequency of 108 kc/s. by a feedback circuit comprising a tuned transformer L2, a piezoelectric crystal Q and a transformer L1, the amplitude of the oscillations being limited by a rectifier GR1 biased through a resistor chain from battery B2. The valve is also caused to oscillate at the subharmonic frequency of 36 kc/s. by a cathode to grid feedback circuit comprising the tuned transformer L3. The biased rectifier GR2 which limits the amplitude of oscillation at this frequency is also fed with frequency of 108 kc/s. through the transformer L2 so as to synchronize the subharmonic frequency. A further cathode to grid feedback circuit through transformer L5 causes the valve to oscillate at 12 kc/s. and the biased limiting rectifier GR3 in this case is fed with a 36 kc/s. (or 108 kc/s.) signal for synchronizing purposes from the anode or grid transformers. Outputs at 36 kc/s. and 12 kc/s. are derived from tuned transformers L6 and L7 in the anode circuit of the valve. Small adjustments of the fundamental oscillation frequency may be effected by a capacitor C15.
Patent GB-1279867-A (GB)
Title: Machines for preparing receptacles of bracteal plants
Inventor: PROUHET JACQUES FRANCOIS ROBER
IPC: A23N15/04
Filed: 1969-07-16
Abstract: 1279867 Apparatus for preparing artichokes SOC D'INTERET COLLECTIF AGRICOLE MARCHE DE VENTE AUX ENCHERES DU NORD-FINISTRERE 16 July 1969 [26 July 1968 23 May 1969] 35860/69 Heading A4C Apparatus for preparing the receptacles of leafy plants, particularly artichokes, the apparatus comprising a receptacle support, a blowing head for removing the leaves, a suction holder for thereafter picking up the receptacle from the support, and a machining device for shaping the receptacle bottom. In a first embodiment, Figs.2-6 (not shown) and Fig.1, a plurality of working units are mounted on a system 3 rotating about a hollow column 2 serving as a pressurized fluid reservoir for blowing heads 22 and for connection of suction holders 40 to a suction source. A working unit comprises a tubular receptacle support 32, mounted on a parallelogram linkage moved via contact of linkage 36, 37 with a can on a stationary bedplate 1, a blowing head 22, rotating about a vertical axis and having a side arm with a nozzle directed radially to said axis, a side arm with a tangential nozzle, and having two rows of nozzles, the nozzles in one row being parallel to said vertical axis and those in the other row being inclined to said axis, the working unit further comprising a suction holder 40, rotatable about an axis through itself and mounted on an arm rotatable about a spindle 41a secured to an arm 16 carrying head 22, and a machining device. After removal of the leaves and choke the receptacle bottom is cut off from the stem by a knife 39 the bottom then being picked up by holder 40 which is rotated about spindle 41a towards the machining device which comprises a straight blade 54, Fig. 5 (not shown) or a rotating circular blade (54a) Fig. 6 (not shown) the operative position of either type of blade being determined by contact of a feeler 60 with the receptacle, feeler 60 adjusting the position of a cam surface (64) Figs.5, 6 (not shown) engaged by the blade as it executes a partial rotation about the axis of a spindle 57 caused to oscillate by linkage 61, 62 actuated by a cam 63 on bedplate 1. After machining the receptacle bottom is removed from holder 40 by an ejector 56. In a second embodiment Fig.7 after removal of the leaves and choke by a blowing head and severing of the receptacle bottom from its stem, the bottom is picked up from a support 101 by a suction holder 40a. A spider 96 rotating about a shaft 90, comprises a plurality of double arms 97 between the ends of which are pivots 98 each supporting a rotatable support 100 for a holder 40a. As spider 96 rotates each support engages and rolls on a cam 103 thus positioning holder 40a for machining of the receptacle by a cylindrical blade 54b which rotates about an axis co-axial with the axis of rotation of Spider 96.
Patent GB-734669-A (GB)
Title: Improvements in or relating to polymerization
IPC: C08F236/04
Filed: 1953-12-29
Abstract: Copolymers comprising vinylidene cyanide, an aliphatic conjugated diene and optionally another monomer, are made by polymerizing, e.g. in bulk or solution, a mixture of the monomers in the presence of an organic thiol and sulphur dioxide.  The diene may be butadiene-1,3, isoprene, piperylene, 2,3-dimethyl butadiene-1,3, 1,2-dimethyl butadiene-1,3, 1-ethyl butadiene-1,3, 2-neopentyl butadiene-1,3, phenyl butadiene, 2-methyl pentadiene-1,3, 2-chloro - butadiene - 1,3, 2 - bromo - butadiene-1,3, 1 - bromo - 2 - methyl - butadiene, 1-iodo - 3 - methyl - butadiene - 1,3, or mixtures.  The other monomer may be a vinyl or allyl ester, an acrylic or methacrylic acid ester, a vinyl halide, a 1,2-dihaloethylene, styrene or a substituted styrene, acrylonitrile, or isobutylene.  Solvents such as benzene, toluene, trichlorobenzene, hexanone, heptane, ethyl chloride, or chloroform may be used and the sulphur dioxide dissolved in the solvent.  Specified thiols are thiophenol, thionaphthol, 8-quinolinethiol, 3-methyl cyclohexanethiol, o-, m- and p-toluenethiols, xylenethiols, alpha-toluenethiol, methanethiol, ethanethiol, 1-propanethiol, 2-propanethiol, 1-butane-thiol, 2-butanethiol, 1-hexanethiol, dodecanethiol, 2-mercapto-ethanol, and gamma-mercapto-alpha beta-dimethyl butyric acid and mixtures.  The polymers may be made into filaments and films.  Specifications 683,655 and 688,339 are referred to.
Patent GB-522599-A (GB)
Title: Improvements in or relating to pipe joints
IPC: F16L13/10
Filed: 1938-12-10
Abstract: 522,599. Pipe joints. EXPANDED METAL CO., Ltd., and TAYLOR, J. Dec. 10, 1938, No. 36109 [Class 99 (i)] In a caulked or cemented joint the spigot is centred within the socket by a ring of meshed material having a portion 3 which fits the spigot and a flanged or bent portion 5 which fits the socket. The ring may be of expanded metal and a ring 2 of spun-yarn may be held in the flanged portion 5 by turning down some of the meshes at 7.
Patent GB-1034247-A (GB)
Title: Method of obtaining a flat surface on a thin diaphragm
Inventor: MAUGUEN PIERRE
IPC: F16J3/02
Filed: 1964-09-04
Abstract: 1,034,247. Handling radioactive materials. COMMISSARIAT A L'ENERGIE ATOMIQUE. Sept. 4, 1964 [Sept. 27, 1963], No. 36378/64. Heading B4Q. A manipulator installation for handling radioactive material comprises a casing having a lateral wall 38, a horizontal diaphragm 10 formed of a non-ferromagnetic material across the top of the easing, a frame 14 which is rigidly secured to the wall 38 and to the diaphragm 10 and which induces tensile stresses within the diaphragm 10, and a manipulator 42 consisting of a driving head above the diaphragm 10 magnetically coupled to a driven head below the diaphragm 10, small wheels carried by the heads maintaining them a constant distance apart. The tensioning of the diaphragm 10 prevents the thrust exerted by the wheels from causing any deflection of the diaphragm. Prior to the mounting and fixing of the diaphragm 10, the frame 14 is fitted with pairs of cables 18 connected at adjacent ends by means of turnbuckles 16 and at opposite ends by means of screws 22 to opposite sides of the frame 14. When suitable tension has been applied to the cables 18 by means of the turnbuckles 16, the diaphragm 10 is secured to the frame 14 by means of screws 12, after which the tumbuckles 16 are slackened off and the cables 18 detached. The diaphragm 10 is thus subjected to a tensile prestressing which prevents its deflection so long as the load to which it is subjected does not induce any stress higher than the prestress applied by the frame. The installation is surrounded by an outer shield structure 34 of substantial thickness, being formed of cast iron, for example, and fitted with an inspection window 36. The wall 38 of the inner casing consists of stainless steel plate and is provided with inspection windows 40. A suitable non- ferromagnetic material for the diaphragm 10 is an alloy containing 26À4% nickel, 15% chromium and a small proportion of manganese, molybdenum and titanium.
Patent GB-798063-A (GB)
Title: Improvements in or relating to a process for the finishing of artificial hides or leathers
IPC: D06N3/04
Filed: 1956-10-09
Abstract: 798,063. Artificial leather. ALEGRE, A. A. Oct. 9, 1956, No. 36443/54. Class 140. Artificial hides and leathers formed from natural or artificial fibres bonded with natural or artificial latex or synthetic resins, are coated first with a solution or paste of acrylic resin with or without casein, and thereafter coated with polyvinyl butyral, polyvinyl acetate or polyvinyl chloride, and finally subjected to pressing with calender rolls. The acrylic resin, for example an acrylonitrile-butadiene copolymer, may be mixed with casein or nitro-cellulose and applied as an aqueous dispersion, whilst the polyvinyl chloride acetate or butyral may be applied either as an aqueous solution or emulsion, or separately formed as a film and then applied to the surface of the leather at 80‹ to 170‹ C., after which the composite is pressed to bond the two layers together. If the synthetic resins are applied to the leather in the form of a paste with plasticizers and heating is necessary to distribute them evenly, a cold support is preferably placed under the leather to prevent damage thereto. Examples relate to an artificial leather treated first with an aqueous dispersion of acrylonitrile-butadiene copolymer with a plasticizer (dibutyl phthalate), sulphonated castor oil or glycerine) and thereafter with one or more successive coatings of polyvinyl chloride in the form of an aqueous dispersion or a preformed sheet. Lithopone, china clay, barium sulphate, barium chloride, or bentonite may be employed as fillers. Specification 699,755 is referred to.
Patent GB-302180-A (GB)
Title: Improvements in or relating to circuit arrangements suitable for use in signalling systems
IPC: H04B3/00
Filed: 1928-12-10
Abstract: 302,180. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Moulton, A. B.). Dec. 10, 1927, [Convention date]. Systems for transmitting music and the like. -Signals from a number of different sources 1, 2, 3 are combined in the output of a common amplifier 8 through a balanced-bridge arrangement which maintains each of the separate input channels independent of each other and so prevents interaction. As shown in Fig. 3, the secondaries of each of the three input transformers 1, 2, 3 are connected in series through mid-point tappings so that the primary windings are electrically symmetrical with respect to those mid-points. The lead to the filament in each case contains an impedance network N which, in the case of the first transformer, balances the " load " consisting of the grid and associated elements of the combining valve 8. As shown in Fig. 3<a>, the balanced bridge for the second input 2 consists of two arms containing the half-windings c and d, the third arm comprising the balanced-bridge a, b, N1 for the first input, and the fourth arm an impedance network N2. Subsequent inputs are similarly balanced. The combining valve 8 is shown as of the . screened-grid type, though an ordinary three electrode valve may be used in combination with known methods of neutralizing the capacity coupling between the input and output electrodes. Alternatively a, push-pull arrangement of screenedgrid amplifiers is used. In this case the balancing networks N may comprise a three-point impedance, balancing both the " line " capacity and also the capacity between " line " and ground circuits.
Patent GB-429890-A (GB)
Title: Improvements in or relating to operating handles for coin-operated apparatus
IPC: G07F9/10
Filed: 1934-12-20
Abstract: 429,890. Friction couplings. ARON ELECTRICITY METER, Ltd., and RIORDAN, E. J., 80, Salusbury Road, Kilburn, London. Dec. 20, 1934, No. 36555. [Class 80 (ii)] [See also Group XVIII] An operating handle for coin-freed apparatus incorporating a friction coupling which slips when an undue turning stress is applied, comprises a finger piece 11 with an inset metal coupling part 12 which coacts with a face 13 of a sleeve 22, connected with mechanism of the apparatus. The coupling parts are held in engagement by a compression spring 26 acting upon an end of the sleeve 22 and a washer 27 sprung into a groove 28 in a split end of a pin 14 carried by the finger piece. The handle is retained in a front wall 35 of the apparatus by a spring washer 34 which acts on a washer 33 bearing on a split ring 31 mounted in a groove in the sleeve 22.
Patent GB-335122-A (GB)
Title: Improvements in typographical line composing and casting machines
IPC: B41B11/18
Filed: 1929-11-30
Abstract: 335,122. Hart, H., (Mergenthaler Linotype Co.). Nov. 30, 1929. Assembling matrices. - In machines in which multicharacter matrices can be assembled at different levels. and in which the first elevator can be arrested by a movable stop in a slightly raised position, automatic means is provided for bringing matrices assembled at the higher level down to the lower level when the elevator stop is in action, in order to avoid an improper presentation of the matrix line to the mould. The matrices are sustained at the higher level in the assembler C, Fig. 1, by a retractable rail C', and in the first elevator F, Fig. 5, by a retractable rail F<1>. The pivoted stop or filler-piece J, Fig. 1, by which the elevator is arrested at the higher level, is connected by a crank pin and a, slot to a sliding rod K, which is connected to a lever L bearing a cam-piece L<3>. When the stop J is in operative position, the cam-piece L<3> is projected. so as to be adapted to engage a notch in the end of the assembling-rail C<1>. and to withdraw the rail as the assembler ascends. The cam-piece may be mounted directly on the rod K. In a modification, the matrices are brought to the lower level by withdrawal of the rail F<1> of the first elevator durng the descent of the elevator towards the mould. The levers F<7>, Fig. 5, by which the rail F' is operated, have connected to them an arm F<6>, which can be engaged by a cam-piece M<1>, so as to withdraw the rail. The cam-piece is mounted on a sliding base and is moved into operative position by connections from the stop or filler-piece J. Specification 21097/09 is referred to.
Patent GB-876300-A (GB)
Title: Improvements in or relating to glow plugs for internal combustion engines
IPC: F23Q7/00
Filed: 1959-10-30
Abstract: 876,300. Glow plugs. BOSCH G.m.b.H., ROBERT. Oct. 30, 1959 [Nov. 13, 1958], No. 36840/59. Class 7(4). A glow plug for internal combustion engines comprises an electrode 3 arranged in a metal casing 4 and insulated therefrom by a layer of ceramic material 6 applied, e.g. by spraying, to the outer surface of the electrode. As shown, the outer surface of an inner electrode 2 is similarly coated with ceramic material. A glow wire 5 is fitted to electrodes 2, 3. The faces of the ceramic layers 6, at which a gas-tight seal is necessary are provided with a layer 7 of a softer material such as talcum powder which fills in any irregularities in the ceramic surface. The sealing surfaces may be conical instead of cylindrical in shape.
Patent GB-1299175-A (GB)
Title: Improvements in or relating to apparatus for feeding articles
Inventor: MCCOMBIE ALAN KEITH
IPC: B65G47/51
Filed: 1968-11-14
Abstract: 1299175 Temporarily storing cigarettes during their conveyance MOLINS MACHINE CO Ltd 14 Nov 1969 [14 Nov 1968 24 Jan 1969 (2) 14 Feb 1969 16 May 1969] 36851/72 36852/72 36853/72 36854/72 and 36855/72 Divided out of 1299174 Heading B8A A conveyer system for feeding cigarettes or other rod-like articles sideways, comprises a variable-capacity reservoir which includes a conveyer. The latter serves as the floor of the reservoir and extends along a path including at least one lateral bend about a vertical axis, and is arranged to receive an article stack of variable length according to the capacity of the reservoir. The descriptive matter in the Specification is the same as that in the parent Specification 1,299,174 but the claims differ.
Patent GB-877628-A (GB)
Title: An apparatus for purifying suspensions of relatively high density, particularly suspensions of fibrous material
IPC: D21D5/18
Filed: 1959-10-30
Abstract: 877,628. Centrifugal separators. VOITH G.m.b.H., J. M. Oct. 30, 1959 [Oct.30, 1958], No. 36931/59. Class 23 A separator for paper pulp comprises an inlet chamber 2 having a tangential inlet 1, a separating chamber 7 containing a rotor 5, and an outlet 8 for purified pulp. Impurities are collected in a chamber 14 having a window 15. The material flowing to the chamber 14 may 'be viewed through a window 11 placed opposite a light 12. Dimensions of the separator are given.
Patent GB-1029199-A (GB)
Title: Dark decay controlled xerography
IPC: G03G5/10
Filed: 1963-09-20
Abstract: 1,029,199. Electrophotographic plates. RANK XEROX Ltd. Sept. 20, 1963 [Oct. 1, 1962], No. 37065/63. Heading H1K. A xerographic plate comprises a fine pattern of areas with different rates of dark decay. As shown, a conductive substrate 12, for example of stainless steel, copper, brass, abraded, cleaned or chromated aluminium, or conductive glass, plastic or paper, is covered with a pattern 13 of insulating material. for example of aluminium oxide, copper oxide, oxidized brass, polystyrene, or organic. photo-resist or acid resist materials. A layer 14 of a photoconductive insulator, for example cadmium sulphide, or selenium, is deposited on the plate by vacuum evaporation or casting. The insulating pattern 13 may be produced by oxidizing and then engraving or etching the surface of an aluminium plate, or by mixing polystyrene with a solvent and printing the pattern on to the substrate. The pattern 13 may be very thin so that tunnelling occurs on exposure to radiation to allow the discharge of the exposed areas of the photoconductive insulator 14. Alternatively the pattern 13 may be thick so that it acts as an insulator on exposure to radiation, the adjacent non-insulated areas allowing the discharge of exposed areas. The plate is charged, exposed and developed as usual except that a time delay is provided somewhere between charging and development to allow the parts of the plate with a high rate of dark decay to discharge the photoconductive insulating layer in a fine pattern so that on exposure any large areas of charge are broken up thus improving the reproduction of continuous tone originals. The insulating pattern 13 may be in the form of dots of regular or irregular shape, strips, or a continuous layer punched with holes.
Patent GB-1368232-A (GB)
Title: Azetidino-thiazolidine compounds
IPC: C07D495/04
Filed: 1970-07-31
Abstract: 1368232 Azetidino-thiazolidine compounds GLAXO LABORATORIES Ltd 30 July 1971 [31 July 1970] 37187/70 Heading C2C Novel compounds of the formula in which R<SP>1</SP> is the residue of an acyl group R<SP>1</SP>CO- having 1-21 carbon atoms, R<SP>3</SP> is H, halocarbonyl or a selectively removable group serving to protect a secondary nitrogen atom, and R<SP>4</SP> is H or an esterified malonate group, or a group where R is a carboxyl group or esterified carboxyl group or a protected hydroxyl or amino group (e.g. an ether or methane group), may be obtained by reacting a compound of the formula with a reducing agent serving to reduce an imino-thioether to an amino-thioether, e.g. dissolving metal reducing agents such as Zn in acid or aluminium amalgam in the presence of water, optionally followed by reaction of the product (in which R 3  = H) with a reagent capable of introducing the protecting group, e.g. (i) by reaction with phosgene to form the compound in which R 3  is halocarbonyl then reacting the latter with an alcohol or phenol, or (ii) by reaction with a haloformic acid. The protecting groups may subsequently removed, e.g. by mild acidic or basic hydrolysis, enzymic hydrolysis or hydrogenolysis. Reference has been directed by the Comptroller to Specification 1,271,180.