baber/WOPTO huggingface dataset:
Patent GB-684626-A (GB)
Title: Improvements in or relating to electric amplifier arrangements of the kind which includes a magnetic amplifier
IPC: H03F9/02
Filed: 1950-03-28
Abstract: 684,626. Deaf aids. GENERAL ELECTRIC CO., Ltd., and HAMER, E. G. March 21, 1951 [March 28, 1950], No. 7768/50. Class 40 (iv). [Also in Group XL (c)] An electric amplifier arrangement comprises a magnetic amplifier which is supplied with alternating current from a crystal contact oscillator, the only necessary source of electric supply being direct current. The invention is suitable for deaf-aid apparatus. In Fig. 1, the input signal, which may be D.C. or A.C., is applied to control winding 8 on saturable core transformer 3. Oscillations at a higher frequency are applied to primary winding 5 on the transformer, and the output, consisting of a modulated wave, is taken from winding 6, rectified, and applied to load 18 which may be a telephone receiver. The oscillations are produced by a crystal triode oscillator, the tuned circuit 5, 25 being connected effectively between the base electrode and both the emitter and collector electrodes. Bias for the electrodes is supplied by battery 27, which is the only source of energy for the amplifier. Oscillations are produced due to the current-gain characteristic of the transistor. In an alternative arrangement the emitter is coupled to the collector circuit by a separate coil on the same transformer leg. The audio frequency response of the device may be modified by varying condenser 19 across the load 18. An additional winding may be provided to produce the polarizing magnetic flux for the transformer if the direct current through coil 5 is insufficient, and a further modification provides for the use of a transformer of toroidal construction.
Patent GB-1116006-A (GB)
Title: Catalytic isomerization of cycloalkadienes
IPC: C07C5/22
Filed: 1966-02-22
Abstract: Cycloalkadienes, having C6- 12 rings and at least one -CHR- group (where R is H or lower alkyl) in alpha-position to a double bond, are isomerized to structural isomers having a thermodynamically more favoured energy state by contact with an alkaline earth metal amide or substituted amide.  An inert solvent may be present, e.g. an ether or saturated aliphatic hydrocarbon. In the case of C6, C7, C8 and C12 ringed dienes the favoured product is a conjugated diene, whereas for C9, C10 and C11 ringed dienes it is non-conjugated.  In examples, a wide variety of substituted and unsubttituted cycloalkadienes are isomerized.ALSO:Calcium amide [Ca(NH2)2] is prepared (Example I) by reacting calcium turnings with liquid ammonia, allowing excess ammonia to evaporate, leaving the resulting composition to stand for 3 days in an atmosphere of nitrogen, and then breaking the reaction flask, resulting in rapid evolution of ammonia and production of a fine grey powder which is the desired product.
Patent GB-1062330-A (GB)
Title: A casette for reels of tape and the like
Inventor: FIDGEON JOHN EDWARD
IPC: G11B23/027
Filed: 1965-02-24
Abstract: 1,062,330. Tape dispensers. JENKINS FIDGEON Ltd. Jan. 26, 1966 [Feb. 24, 1965], No. 7918/65. Addition to 874,996. Heading A4G. A tape reel casette comprises a similar rectangular base and lid with side walls, hinged together at one side and provided with means holding them closed together, the lid being a keyhole opposite the tape reel spigot on the base whereby the reel may be rotated, and a dispensing slot formed in opposite side walls. Tape guide flanges may be formed on the outside of the walls containing the slot.
Patent GB-767384-A (GB)
Title: Device for connecting jet-engine-powered airborne vehicles to ground mounted silencers
IPC: B64F1/26
Filed: 1955-03-18
Abstract: 767,384. Silencing gaseous currents. SVENSKA AEROPLAN AKTIEBOLAGET. March 18, 1955 [March 25, 1954], No. 7930/55. Class 7 (2). A tubular connector 15 essentially of soundabsorbing material is applied in sealing relation to the inlet of a silencer 2 and to parts of a jet-engined aircraft or guided missile surrounding the engine, the connector being axially movable for compensating varying movement between the aircraft and the silencer, so that, despite such movement, the connection will be substantially sound-tight. As shown, the connector 15 comprises outer and inner sheet metal shells 22, 23 and an intermediate packing of sound-absorbing material and is in the form of a truncated cone, the smaller end which is arranged to encompass and receive the tail end of an aircraft fuselage 1 being defined partly by a semi-circular edge 25 and partly by an inclined edge 26 extending rearwardly and upwardly ; the larger end of the connector bears against a number of rollers 16 mounted on the forward edge of a guide ring 11 so as to be freely movable laterally across the ring. The latter is axially movable on rollers 12 mounted on a flange 10 adjoining a funnel-shaped part 9 of the silencer 2 which is of a known kind, and is urged by a pair of leaf springs toward a stop that allows the ring to project slightly from the flange 10. The connector 15 is attached to the part 9 of the silencer by a flexible, annular bellows comprising a number of alternately arranged layers of plastic and felt, and provided at the ends thereof with metal rings 18, 19, the ring 18 being riveted to a radial flange 20 of the connector and the ring 19 being secured by quickrelease fasteners 21 to the part 9. To reduce strain on the aircraft the connector 15 is resiliently suspended by springs 31, 32 from a carriage 33 slidable along a cantilever beam 34 fixed to the wall 8 of the silencer. Straps 29 are fixed to diametrically opposite sides of the connector and are hooked over the forward edges of the horizontal stabilizing surfaces 27 of the aircraft. Silencers, Fig. 1 (not shown), mounted on rails, are positioned at the air intakes of the aircraft to muffle the sound arising from the compressor and the flow of air into the intakes.
Patent GB-1213402-A (GB)
Title: Preparation of chlorinated derivatives of ethylene
Inventor: LUDWIG GERHARD HEINRICH
IPC: B01J10/00
Filed: 1968-02-19
Abstract: 1,213,402. Chlorinated ethylenes. BRITISH PETROLEUM CO. Ltd. 13 Feb., 1969 [19 Feb., 1968], No. 7977/68. Heading C2C. Vinyl chloride is produced in a single-step process in which ethylene is contacted with a melt containing both cuprous and cupric chloride so that the cupric chloride is reduced to cuprous chloride which is reoxidized by treatment with hydrogen chloride and oxygen and/or chlorine, the process being carried out in a single reactor with (a) ethylene and (b) hydrogen chloride and/or oxygen being fed to two zones within the reactor. The melt optionally also contains an alkali metal chloride, zinc chloride, lead chloride, cadmium chloride, a rare earth metal chloride or a mixture thereof. Other chlorinated hydrocarbons, e.g. ethyl chloride, 1,2 - dichloroethane, 1,1,2 - trichloroethane, dichloroethylenes, trichloroethylene and perchloroethylene, may be produced as by-products and may be recycled to the reactor. In a modification of the process, perchloroethylene may be obtained by operating under conditions such that inter alia perchlorethylene and vinyl chloride are produced, separating and recovering the former by fractional distillation and recycling the latter together with other chlorinated hydrocarbon by-products.
Patent GB-276390-A (GB)
Title: Improvements in methods and apparatus for coating metals with metal
IPC: C23C14/56
Filed: 1926-03-23
Abstract: 276,390. Marks, E. C. R., (American Machine & Foundry Co.). March 23, 1926. Coating.-In a method of coating metals with metal, the metal to be coatted, preferably in wire form, is passed continuously through a dhamber within which an atmosphere, containing the vapour of the coating metal is continuously produced and maintained at a sub-normal pressure, e.g., 10 inches of mercury. To assist the coating, the atmosphere containing the coating metal is subjected to a high electric potential, e.g., of approximately 2000 volts, in order to ionize the vapour. The coating chamber 1 surrounded by a vacuum chamber 26 is provided with an inlet 2 for the wire to be coated and an outlet 3 for the coated wire, the wire passing from the inlet 2 through a chamber 6 into the chamber 1 and out through a pipe 5 to the outlet 3. The vapour of the coating metal in the chamber 1 is produced by vapourizing the coating metal in a pot 9 which is heated by a coil 12 connected to rods 7, 8, which also support the pot 9 in the chamber 1, and which are connected to wires 7', 8<1>. An insulating graphite shield 13 is provided round the pot 9 which also has an aperture. 10 for the passage of the wire and the rods 7, 8 are impported by insulators 14 surrounded by cylinders 15 to prevent condensation of metal thereon. The upper end of the rod 8 is hollow and is connected at its upper end with a pipe 16 leading to a pot 17 containing coating metal and at the lower end of the hollow part with a pipe 19 leading to the pot. By this means the metal in the pot 9 may be replenished. To maintain the interior of the chamber 1 at the desired sub-normal pressure, a pipe 20 connected to the tube 5 is connected to a pump (not shown). To free. the atmosphere in the chamber from water vapour, a duct 21 is connected to the chamber 6 and also through a dehydrating chamber 22 to a suitable pump. The wire on entering the inlet 2 may be cleaned by a sand blast through a pipe 24 and the coated wire, may be cooled by a blast, of air through a pipe 25 connected to the outlet 3, and the blast through these pipes prevent the access of air to the chamber 1. The chamber 26 which acts as a heat insulator for the chamber 1 is provided with dehydrating means 28 connected to a pump and its top as well as that of the chamber 1 is cooled by water circulating through pipes 30. In order to ionize the vapour of the coating metal, the lead 31 of the high potential circuit is grounded on the chamber 26 at 32 and the other lead 33 enters through the rod 7 which is insulated by the insulator 14.
Patent GB-756208-A (GB)
Title: Improvements in the sensitisation of photographic emulsions and in trinuclear cyanine dyes therefor
IPC: G03C1/12
Filed: 1954-03-19
Abstract: 3 - Carbethoxymethyl - 5 - (a  - ethoxyethylidene)-rhodanine is prepared by refluxing 3-carbethoxymethyl rhodanine or 3-carboxymethyl rhodanine with ethyl ortho-acetate in acetic anhydride. Specifications 544,647, 633,736, 700,734 and 742,206 are referred to.ALSO:Trinuclear cyanine dyes of the general formula:-<FORM:0756208/IV(c)/1> wherein R and R3 represent alkyl groups, R1 and R2 represent H or alkyl groups or R2 may be aryl or alkoxy, Z and Q complete heterocyclic nuclei, m and n are O or I and J and J1 are different and represent S and =N-R4 respectively or vice versa where R4 is an alkyl, substituted alkyl, allyl, aryl or substituted aryl group (i.e. J and J1 complete a substituted thiazolone nucleus), are prepared by condensing a compound of the formula <FORM:0756208/IV(c)/2> or of the formula:- <FORM:0756208/IV(c)/3> wherein R5 represents an alkyl group and X is an acid radical, with a compound of the formula:- <FORM:0756208/IV(c)/4> The condensations are preferably carried out in the presence of a basic condensing agent such as triethylamine and in the presense of a solvent such as pyridine, an alcohol or dioxane. R4 may be carboxymethyl, carbomethoxymethyl, carbethoxymethyl, phenyl or o-, m- or p-tolyl.  A list of nuclei which Z may represent is given including 4-(2-thienyl) thiazole, thionaphtheno-71:61:4:5-thiazoles, iso-quinolines and benzimidazoles, and a list of values for Q includes 3-(1-benzothiazyl) rhodanine, 2-N-alkyl-N-phenyl- and 2-diphenylamino-4-thiazolones, thionaphthenones, dihydrocarbostyril, quinoxalone, 3-phenomorpholone and 1:4:2-benzothiazine -3- ones.  In the examples Z completes a benzthiazole, benzoxazole, benzselenazole, naphthathiazole thiazoline, 4:5-diphenyl-thiazoline, 4:5-di-phenyl-oxazoline, pyridine, quinoline, 1:3:3-trimethylindolenine or 1:3-diethyl-benzimidazole nucleus, while Q completes a 3-ethyl-, 3-allyl, or 3-carbethoxymethyl-rhodanine, 2-ethylthio-5-thiazolone or 2-phenyl -5-oxazolone nucleus.  The preparation of certain bases corresponding to the quaternary salts of formula II above is described wherein m is 1, Z completes a thiazoline, benzthiazole, naphthathiazole, pyridine or 1:3-diethyl-benzimidazole nucleus, R4 is carbethoxymethyl or allyl, R1 is H or methyl and R2 is H, methyl or ethyl. Specifications 487,051 519,895, 544,647 [all in Group IV], 603,492, 633,736 [Group IV(b)], 700,734, 742,206, and U.S.A. Specifications 2,656,351 and 2,656,353, also French Specification 1,018,590 are referred to.
Patent GB-796597-A (GB)
Title: Improvements relating to fused fabric assemblies
Inventor: KORNREICH ERNST
IPC: D06M17/08
Filed: 1955-03-21
Abstract: 796,597. Laminated fabrics. TRUBENISED (GREAT BRITAIN), Ltd. June 18, 1956 [March 21, 1955], No. 8144/55. Class 140. Semi-stiff laminated fabrics are made by assembling an interlining fabric incorporating or carrying an alkoxymethylated nylon polymer in solid form and curable condition with one or more other fabrics, and hot-pressing the assembly in the presence of a solvent for the resin and a curing catalyst. The resin may be a methoxy methylated nylon polymer which may be applied as a coating before weaving to some or all of the threads of the fabric, to the fabric after weaving, or may be spun into threads or filaments which may be incorporated in the interlining fabric. The solvent may be methyl, ethyl, propyl, isopropyl, butyl, isobutyl, or amyl alcohol mixed, if desired, with water and the catalyst may be citric, oxalic, or tartaric acid.
Patent GB-285270-A (GB)
Title: Improvements relating to the mounting of gramophone sound boxes
IPC: G11B3/02
Filed: 1927-03-24
Abstract: 285,270. Tootill, S. March 24, 1327. Sound-boxes, connecting to tonearms.-For connecting a gramophone sound-box to the tone-arm and insulating it therefrom, a flanged tube 2, into which the end of the tonearm fits, is secured to the casing 1, a washer 4 of rubber being interposed. This washer is in one piece with a sleeve 3 which forms an insulating liner for the tube 2. The screws 5 which pass through the flange 6 may be insulated therefrom by small rings. To form a stop for the end of the tonearm, the flange 4 may, if desired, extend inwardly within, the sleeve 3.
Patent GB-828465-A (GB)
Title: Apparatus for aligning rigid strip material
Inventor: BINDER REGIS CHARLES
IPC: B21D43/02
Filed: 1957-03-12
Abstract: 828,465. Feeding webs. ARMCO INTERNATIONAL CORPORATION. March 12, 1957, No. 8169/57. Class 100(1) An apparatus for feeding rigid strip material, e.g. of metal, comprises at least one roller which guides the strip laterally, such roller having a surface, at least, of material more resilient than the strip and formed of alternate ribs and grooves disposed centrally of the roller in herring bone manner. As shown, strip S is braked by passage between braking rollers Z<SP>1</SP>, Z<SP>2</SP>, passes around idler rollers Y<SP>2</SP>, Y<SP>1</SP> and is fed by driven rollers X<SP>1</SP>, X<SP>2</SP>. Each of the rollers is formed with V-shaped ribs of resilient material, e.g. of rubber, the points of the Vees being disposed centrally of the rollers so as to cause the strip to be guided centrally of the rollers. In the case of the rollers X<SP>1</SP>, X<SP>2</SP> the ribs point in the direction of rotation of the rollers, such that a frictional force between the rollers and strip acts in the direction opposite to strip movement. The rollers Z<SP>1</SP>, Z<SP>2</SP> have a braking arrangement 14, the ribs on these rollers pointing in the direction opposite to their direction of rotation. Similarly, the ribs on the idler rollers Y<SP>1</SP>, Y<SP>2</SP> point in the direction opposite to their rotation such that the frictional force between the rollers and strip acts in the direction of strip movement.
Patent GB-1055795-A (GB)
Title: Improvements in means for continuously feeding pulverulent or granular materials
Inventor: MADDOCKS KEITH LEVER
IPC: B02C23/02
Filed: 1963-03-01
Abstract: 1,055,795. Control of feed from hopper. HENRY SIMON Ltd. Feb. 25, 1964 [March 1, 1963], No. 8249/63. Heading B8S. A level detector prism 9 is suspended in hopper 12 at the end of lever 10 which is secured to shaft 11 rotatably mounted in the side of the hopper. As the flow of material into hopper 12 varies the height of prism 9 changes and the movement is transferred from shaft 11 through lever 14 and bar 15 so that it controls the position of gate 6 by causing the latter to pivot about its bearing 8. The weight of the lever system is counterbalanced around shaft 11 by adjustable weight 19 and indicators 21 and 50 are provided. The passage of material past gate 6 is assisted by vibrating agitator 2. Operation.-The system of levers is adjusted so that when no material falls into hopper 12 the gate 6 is closed. Accordingly when material falls into the hopper its weight causes prism 9 to descend and the movement via the linkage shown causes gate 6 to open. As the rate of material fed into the hopper increases the gate 6 opens wider.
Patent GB-1294443-A (GB)
Title: Process for the preparation of guanidino derivatives
Inventor: TAYLOR GEORGE ROSS
Filed: 1969-02-14
Abstract: 1294443 Guanidines EVANS MEDICAL Ltd 13 Feb 1970 [14 Feb 1969] 8256/69 Addition to 1114155 Heading C2C Compounds of Formula I (in which each of R<SP>1</SP> and R<SP>2</SP> is a hydrogen atom or an alkyl group, each of R<SP>6</SP>, R<SP>7</SP> and R<SP>8</SP> is an alkylene group separating adjacent nitrogen atoms by a chain of at least two carbon atoms, the total number of carbon atoms in the straight chain between the groups G<SP>1</SP> and G<SP>2</SP>, excluding branching groups, being always greater than 12, n is 0 to 4 and each of G<SP>1</SP> and G<SP>2</SP> is a group of Formula II in which each of R<SP>3</SP>, R<SP>4</SP> and R<SP>5</SP> is a hydrogen atom or a C 1-4  alkyl group) and acid addition salts thereof, are prepared by reacting a compound of Formula III with a compound of Formula IV (in which R<SP>9</SP> is an alkyl or aralkyl group) or an acid addition salt thereof, and, if required, converting a resulting base into an acid addition salt, or converting a resulting acid addition salt into a different acid addition salt. Compounds of Formula IV in which R<SP>3</SP>, R<SP>4</SP> and R<SP>5</SP> are all hydrogen atoms'are prepared in the form of their hydrogen sulphates by reacting an alcohol R<SP>9</SP>OH with cyanamide in the presence of at least two equivalents of sulphuric acid.
Patent GB-545561-A (GB)
Title: Improvements in brassieres
IPC: A41C3/00
Filed: 1941-07-01
Abstract: 545,561. Brassieres. BURGESS, A. F. (Stein & Co., A.). July 1, 1941. No. 8271. [Class 141] The inside of each pocket portion of a brassiere is reinforced at its lower position by a laminated supporting member 7 comprising a textile fabric element 11 united to an inner textile fabric element 12, preferably of so-called cotton or Shaker flannel having or one side a soft nap, by a ply 13 of a normally non-creasable, water-insoluble, but freely pliable, material, preferably natural or synthetic rubber. The element 11 may be omitted. The two members 7 are connected by a gusset 14 of elastic material, but they may be stitched together, or formed in one piece.
Patent GB-916486-A (GB)
Title: Improvements in or relating to non-reciprocal coupling arrangements for radio frequency signals
Inventor: ESSAM ROY
IPC: H01P1/38
Filed: 1959-03-11
Abstract: 916,486. Duplex radio signalling. GENERAL ELECTRIC CO. Ltd. Feb. 23, 1960 [March 11, 1959], No. 8498/59. Class 40 (5). [Also in Group XL(b)] A three-arm radio frequency circulator connected to first, second and third R.F. signal paths is arranged to pass signals supplied along the first and second paths to the second and third paths respectively and is associated with means which automatically cause a variable portion of the signal passed to the second path to be reflected back over that path in dependence on the portion of the signal supplied by the first path that breaks through to the third path, so as to reduce the amplitude of the break-through signal in the third path. Fig. 1 shows a continuous-wave radar system including a circulator 4. Signals received by an antenna 3 are passed to a balanced mixer 18, an intermediate frequency amplifier 25, and conventional receiver stages; intermediate frequency oscillations are supplied by oscillator 22. A portion of the signal passed to the antenna from the transmitter 1 is reflected back by waveguide stubs separated by an odd number of eighths of a wavelength and controlled in effective length by phase shifters 32, 33. The signals controlling these phase shifters are derived from the output of the I.F. amplifier 25, which output is fed to phase detectors 41, 42, which also receive oscillations from the local oscillator 22, directly in one case and after a 90 degree phase shift in the other; the phase detectors thus supply signals dependent on the amplitudes of two components in quadrature of the break-through signal. A phase shifter 24 is adjusted so that the signals supplied to the phase shifters 32, 33 cause the waveguide stubs to present the desired impedances to reflect the signal on line 5. In an alternative arrangement, the locally generated oscillations fed to the mixer 18 are supplied by a radiofrequency oscillator which also supplies oscillations to mixer 21 whose output is heterodyned with oscillations from local oscillator 22; the signal thus derived is mixed with the output of mixer 18 and the resulting signal is passed to the receiver stages 26 and to the phase detectors.
Patent GB-420567-A (GB)
Title: Improvements in the manufacture of articles from steel alloys
IPC: C22C38/22
Filed: 1934-03-19
Abstract: Articles which in use have to withstand the attack of gases which attack and remove carbon, such as apparatus used in the destructive hydrogenation of oil and coal or in the synthesis of ammonia, are made of steel alloys containing a proportion of vanadium which is not less than 0,6 per cent and is at least 4 times the proportion of carbon, preferably 5,6 times, with or without one or more of the elements silicon, manganese, nickel, cobalt, chromium, tungsten, and molybdenum.  The carbon content is preferably not more than 1 per cent, and the vanadium not more than 5 per cent.  Specification 340,819 is referred to.
Patent GB-1293943-A (GB)
Title: Road vehicle incorporating a lamp failure warning system
Inventor: WERDA KONRAD
IPC: B60Q11/00
Filed: 1969-02-18
Abstract: 1293943 Rear view mirrors JOSEPH LUCAS (INDUSTRIES) Ltd 2 Feb 1970 [18 Feb 1969] 8615/69 Heading B7J [Also in Divisions F4 and G2] In a road vehicle, a lamp failure warning system comprises an optical cable, e.g. 11, one end of which is mounted adjacent a lamp of the vehicle and the other end of which is supported by the stem 14 of a rear view mirror, so that failure of the lamp is detected by the driver of the vehicle. The stem 14 which is of synthetic resin material has a recess 15 housing a rubber block 21 to locate the ends of optical cables 11, 12, 13 which have metal ferrules and coloured moulded lenses 17, 18, 19 viewed through a slot 16. The lenses 17, 18, 19 may be coloured to match the respective lamps.
Patent GB-765940-A (GB)
Title: Improvements relating to gear hobbing machines
IPC: B23F23/10
Filed: 1953-11-26
Abstract: 765,940. Gear-cutting. CRAVEN BROS. (MANCHESTER), Ltd., and OWEN, W. Nov. 17, 1954 [Nov. 26, 1953], No. 8631/56. Divided out of 765,939. Class 83 (3). A gear-hobbing machine comprises a corrector-bar e for moving the hob 8 axially through a lever 9, to correct for inaccuracies in the drive to the table 7. One end of the hob-spindle slides on balls in a casing 11 and the other is driven by a flexible-plate 15. The correctorbar is constructed as in Specification 765,939. Specification 665,582 also is referred to.