baber/WOPTO huggingface dataset:
Patent GB-541428-A (GB)
Title: Improvements in single sideband and carrier transmitters
IPC: H03C1/60
Filed: 1940-06-29
Abstract: 541,428. Wireless transmitting sytems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 29, 1940, No. 11058. Convention date, June 29, 1939. [Class 40 (v)] A single side-band is applied through a valve 33 to the aerial or other load 35, and the carrier is applied through a valve 43 and an impedance inverter 45 to the same load. The side band may be produced by a series of balanced stages of modulation and side-band selection, the carrier supplied at the several stages 11, 21, 25 being of progressively increasing frequency. The carrier may be produced by a generator 39 controlled through frequency multiplier 37 from the source 11 supplying the first modulating stage. It's phase is adjustable at 41 before being applied to the valve 43. Alternatively the side-bands may be produced by the method described in Specification 535,127, or both methods may be used.
Patent GB-362819-A (GB)
Title: Improvements in compressors and vacuum pumps
IPC: F04C29/00
Filed: 1931-04-15
Abstract: 362,819. Lubricating rotary pumps. PFEIFFER, C., 3, Rue de la Poste, AsniÞres, Seine, France. April 15, 1931, No. 11220. Convention date, April 15, 1930. [Classes 12 (ii) and 12 (iii).] In a rotary compresser or vacuum pump comprising a rotor 21 provided with radially-sliding blades 23 and mounted eccentrically between end heads 28 of a stator casing 13 having oppositelyarranged inlet and outlet openings 14, 15, oil is supplied by a pump 30 coupled to the rotor shaft through pipes 33 and sight-feeds 34 to passages 35 in the heads 28 leading to grooves 37, Fig. 3, on the inner faces thereof, the grooves extending opposite to the direction of rotation towards the inlet opening 14 and being curved inwardly so as to register with the slots 22 in the rotor below the bottom of the blades. The oil passes outwardly along the blades and forms-a film on the inner wall of the casing, excess oil and condensation water collecting in inclined grooves 38 leading to the outlet 15. The inner wall of the casing is cylindrical except for a small portion 17, 18 beyond the opening 15, which piston is formed concentric with the rotor so as to form a seal. The forward edges of the blades mav be bevelled as described in Specification 179,923, [Class 12 (ii), Lubricating passages &c.]. A high-pressure unit may be coupled directly to a low-pressure unit.
Patent GB-744755-A (GB)
Title: An improved method and apparatus for assembling portable coverings for plants
IPC: F16B5/06
Filed: 1952-05-03
Abstract: 744,755. Spring clips. MARSHALL, G. H., and JOHNSON, A. R. May 4, 1953 [May 3, 1952], No. 11246/52. Class 44. [Also in Groups I and X] A method of temporarily uniting pieces of sheet material 6, 8 comprises bending a strip of material 7, e.g. of metal, which has some elasticity, to form at least two jaws 7a, 7b, one side portion of each jaw having a plane surface and being reinforced by an additional abutting thickness of the strip 7, the other side portion of each jaw being inset near the mouth of the jaw, and inserting at least two sheets 6, 8 respectively into the jaws 7a. A rubber pad 11 is cemented in each jaw. Specification 718,541, [Group I], is referred to.
Patent GB-350642-A (GB)
Title: Improvements in and relating to the manufacture of agents for the protection of textiles and the like from mildew and other fungoid growths
IPC: A01N37/40
Filed: 1930-04-09
Abstract: Arylamides of salicylic acid are ground or milled in water in the presence of wetting agents to produce pasty aqueous dispersions suitable for proofing textiles against mildew and other fungoid growths.  Suitable wetting agents are soaps and sulphonated organic compounds of high molecular weight. Sulphonated naphthalene-formaldehyde condensation products and sulphite cellulose pitch are particularly effective.  In an example, 25 parts of anhydrous salicylic anilide are ground with 25 parts of water and 2.5 parts of a 50 per cent. solution of the sodium salt of the sulphonated naphthalene-formaldehyde condensation product prepared as in Example (1) of Specification 7137/13, [Class 2 (ii), Cellulose &c.], until the particles are reduced in size to about 1 m . Specification 323,579 [Class 81 (i), Disinfecting &c.], is referred to.ALSO:Arylamides of salicylic acid are ground or milled in water in the presence of wetting agents to produce pasty aqueous dispersions suitable for treating mildew and other fungoid growths in textiles. Suitable wetting agents are soaps and sulphonated organic compounds of high molecular weight.  Sulphonated naphthalene-formaldehyde condensation products and sulphite cellulose pitch are particularly effective.  In an example, 25 parts of anhydrous salicylic anilide are ground with 25 parts of water and 2,5 parts of a 50 per cent solution of the sodium salt of the sulphonated naphthalene-formaldehyde condensation product prepared as in example (1) of Specification 7137/31, [Class 2 (ii), Cellulose &c.], until the particles are reduced in size to about 1m .  Specification 323,579, [Class 81 (i), Disinfecting &c.], is referred to.
Patent GB-1535676-A (GB)
Title: Web splicing apparatus
IPC: B65H19/18
Filed: 1977-03-17
Abstract: The system has two supply rolls (3, 4) next to which a movable joining device is arranged which has an idler roll (11), a web brake (34a, 34), a cutter and a joining roll (27a, 27). If the device is arranged next to the almost-unwound supply roll, the web brake (34a, 34) is actuated and the web is stopped. If the device is arranged next to the full supply roll, the web brake stops the web for severing and aligning until the join has been produced. The joining roll has projections for guiding a cutting tool. On the discharge side of the joining device, the idler roll (11) is arranged which interacts with a dancer roll (12) in order to keep the web under tension. After the join has been produced, the idler roll (11) can be driven in order to increase the tension of the web and to accelerate the web taken off from the full supply roll to the normal velocity. <IMAGE>
Patent GB-691497-A (GB)
Title: 2,5-diacyloxy tetrahydrofurans and a method for their production
IPC: C07D307/20
Filed: 1951-05-15
Abstract: The invention comprises 2,5-diacyloxy tetrahydrofurans of the general formula <FORM:0691497/IV (b)/1> wherein Ac represents an acyl radical, and a process for the preparation of the above compounds by hydrogenating diacyloxy-2,5-dihydrofurans under pressure in the presence of a hydrogenation catalyst, e.g. Raney nickel.  In the examples, compounds of the above general formula are prepared in which both the acyloxy radicals are acetoxy, propionoxy, butyroxy and benzyloxy radicals.
Patent GB-674889-A (GB)
Title: Devices for moving railway trucks and other wheeled vehicles
IPC: B61J3/10
Filed: 1949-04-29
Abstract: 674,889. Railway shunting levers. WITHERS, J. S. (Mobile Industrial Equipment Proprietary, Ltd.). July 31, 1950 [April 29, 1949], No. 11440/49. Class 61 (ii). A device for moving railway trucks and other wheeled vehicles, comprises a frame, a toggle link and a toggle lever both pivotally connected to the frame, the lever being adapted to move the link pivotally with respect to the frame, and means for actuating the toggle lever, the location of the pivot which connects the lever to the frame being adjustable, whereby the leverage exerted by the toggle mechanism may be adjusted. The device comprises a frame 1 of substantially U section having side walls 6 and a base 7, a pivot pin 8 being provided between the walls 6 to support a toggle member 2, the face 2a of which is adapted to engage the rim of a wagon wheel. The toggle is pivoted at 18 to a lever 3, pivoted to the frame at 21 and extended by a socket 23 to receive an operating handle 4. The base 7 of the frame is recessed at 9 to house two rectangular section hardened blocks 11 which function as a pivot by gripping the rail. In a modification the blocks 11 may be mounted in a carriage which is adjustable with respect to the frame so that the distance between the blocks 11 and the pivot 8 may be adjusted. The lever is slotted at 24 to accommodate sliding movement of the lever about the pivot and an additional pivot 22 and slot 25 are provided so that the leverage may be varied. In an alternative method of providing a variable leverage both the plates 6 and the member 3 are slotted and a movable pivot pin may pass transversely through the slots and be moved to selected positions. A stop 20 is formed on the lever 3 to limit relative movement between the lever and the toggle.
Patent GB-383545-A (GB)
Title: Improvements in push-pull circuits for amplifying electric oscillations
IPC: H03F1/16
Filed: 1932-04-21
Abstract: 383,545. Valve amplifying circuits'. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. April 21, 1932, No. 11469. Convention date, May 5, 1931. [Class 40 (v).] In order to prevent instability in neutralized pushpull amplifiers arising from the inductances of the leads interconnecting the electrodes of both valves (i.e. the filament connections and the anode-grid cross-neutralizing connections), the ratio between the impedances ofthe anode-grid connections and the intercathode connections corresponds to that of the anode-cathode and anode-grid capacities. This is effected as shown in the Figure by connecting the push-pull input circuit I to the electrical centres of the anode-grid cross-neutralizing leads ln, which include the neutralizing condensers cn.
Patent GB-455094-A (GB)
Title: Preparation of 1-phenyl-3-methyl-pyrazolone-5 and related compounds
Filed: 1935-04-13
Abstract: Pyrazolones are prepared by treating aromatic hydrazines with diketene in equimolecular proportions.  The process is effected at a temperature of 40--110 DEG  C., preferably 80--85 DEG  C., and advantageously in the presence of an inert solvent and with continuous removal of the water formed.  The examples describe the production of 1-phenyl-3-methyl-5-pyrazolone by slowly adding diketene in the requisite amount to a boiling solution of phenylhydrazine in benzene whilst continuously distilling off the benzene and water; the product crystallizers out on cooling; using toluene as the solvent, the pressure is sufficiently reduced to allow boiling to take place at about 85 DEG  C.  In the same way, 2 : 4-dinitrophenylhydrazine and m- and p-tolylhydrazines are converted into the corresponding pyrazolones.
Patent GB-1217125-A (GB)
Title: Improvements in or relating to carburettors
IPC: F02M1/10
Filed: 1969-03-04
Abstract: 1,217,125. Spray carburetters. HONDA GIKEN KOGYA K.K. and KE IHIN SEIKA SEISAKUSHO K.K. March 4, 1969 [March 5, 1968], No. 11499/69. Heading F1B. In a carburetter a cam surface 5A controls minimum throttle opening 6 and is connected to a spring-closed choke valve 3 member so that the idling throttle valve opening is increased as the opening of the choke valve is decreased and a temperature sensing device 19 is connected to the choke valve so that the opening of the choke valve may be automatically adjusted in dependence upon the engine running temperature regardless of whether the cam surface and a follower member are in contact. Operation:- Engine exhaust gas or lubricant passes through inlet 23 into housing 16 and thence into outlet 24. The rise in temperature sensed by device 16 moves rod 20 out of the device against the action of spring 31, the movement being transmitted via bellcrank 26, connecting rod 29 and cam 5 to open the choke valve member 3.
Patent GB-1254473-A (GB)
Title: Xerographic marking method
IPC: G03G9/00
Filed: 1969-03-04
Abstract: 1,254,473. Electro-photographic process. ADELAIDE STEAMSHIP INDUSTRIES PTY. Ltd. March 4, 1969 [March 4, 1968], No.11500/69. Heading G2H. Metal surfaces are marked by (i) forming a layer of negatively charged dry photo-conductive powder on the surface, (ii) exposing imagewise, (iii) removing the powder from the exposed areas by an air-flow, and (iv) bonding the remaining powder to the surface. As shown a steel plate 10 transported by rollers (21) is held on a table (20); charged photo-conductive powder (e.g. ZnO/ polyisobutylmethacrylate) is applied to the plate by a hopper 25 moving on rails (27), the powder exposed to uv by a projector (12) using a uv filter as shutter, the exposed powder sucked off the plate, and the remaining powder fixed to the plate by solvent or heat. The hopper 25 contains two troughs 29 in which the powder is fluidized by air, each trough having an apertured metering gate through which toner passes into a zone containing air conduits 37 so that a cloud of powder is blown into zone 38 and past a tungsten wire corona electrode 35 held by insulating bars 33, on to the metal plate.
Patent GB-573939-A (GB)
Title: An improved manufacture of refractories
IPC: C04B35/043
Filed: 1943-07-15
Abstract: The bonded strength at intermediate temperatures of basic refractories containing magnesia or chromite is increased by adding less than 5 per cent of an element of the right hand column or groups V and VI of the periodic table and having an atomic weight between those of sulphur and tellurium, or a compound of one of these elements with another element other than iron or an alkali metal. The material is preferably water insoluble and nonreactive towards the temporary bonds such as calcium chloride, waste sulphite liquor, dextrin &c. used to facilitate moulding; it should also be sufficiently volatile to be removed at high temperatures.  Sulphur, arsenic, tellurium, antimony, tellurides, arsenides, antimony oxide, or insoluble sulphides of metals such as copper, lead, or antimony can be used.  The amount of material to be added varies from 0.1 to 3 per cent, and results in a reduction of the firing-temperature. According to examples: (a) bricks are made by mixing periclase, chrome ore, and 1/2 per cent sulphur, tempering with calcium chloride solution, and heating for four hours in a moist atmosphere at 300 DEG F., and then for four hours in a dry atmosphere at 350 DEG  F.; (b) a periclase clinker is mixed with 1 per cent antimony oxide, tempered with sodium silicate, rammed into place in a subhearth and heated to 2400 DEG  F.; (c) 1/2 per cent of antimony oxide is mixed with chrome ore, the mixture tempered with sodium silicate, pressed into brick, dried, and used without prefiring.  Furnaces may be constructed with material containing the bonding agent placed adjacent material not containing the bonding agent.  According to the Specification as open to inspection under Sect. 91, iron sulphide or an insoluble organic sulphide may be used. This subject-matter does not appear in the Specification as accepted.
Patent GB-542511-A (GB)
Title: Improvements in the production of hydrogen
IPC: C01B3/06
Filed: 1940-07-12
Abstract: 542,511. Hydrogen. POWER-GAS CORPORATION, Ltd., and GRISENTHWAITE, A. T. July 12, 1940, No. 11639. [Class 90] In the manufacture of hydrogen by the steamiron process the introduction of the various reacting gases is automatically begun in accordance with a time cycle, but the flow of process steam and combustion air is stopped by a thermostatic control without altering the pre-determined time of introduction of the next gas. Purge steam is introduced separately independently of the thermostatic control. The'generator 1 has an ore bed 3 and regenerator 4. In the regeneration period reducing gas is admitted by valve 7 and passes through the ore bed. Air is admitted by valve 14 to burn the surplus reducing gas and heat the regenerator 4. When the latter reaches a pre-determined temperature pyrometer 28 operates relay 30 to close air valve 16. When in accordance with the time cycle valve 7 is closed purging steam is admitted by valve 23 and leaves by valve 12. After a pre-determined period the purge steam is cut off and process steam is admitted by time-controlled valve 19 and the hydrogen passes out at valve 10. When the regenerator temperature has fallen to a predetermined extent pyrometer 29 operates relay 31 to close steam valve 21. A small flow of steam may however be allowed to continue till the end of the pre-determined period.
Patent GB-387550-A (GB)
Title: Improvements in and relating to spring forks for motor-cycles and the like
IPC: B62K25/24
Filed: 1932-04-25
Abstract: 387,550. Spring forks. NORTON MOTORS, Ltd. and CARROLL, A., Bracebridge Street, Aston, Birmingham. April 25, 1932, No. 11785. [Class 136 (iii).] In a spring fork of the link-mounted type for motor cycles &c., the action of the main spring f is supplemented by that of auxiliary tension springs m connected between angularlydirected extensions k, l of the upper and lower parallel links d, e respectively, these extensions being so disposed as to bring the auxiliary springs into action mainly after the fork has passed through a substantial part of its upward movement; on the rebound the increase of resistance due to the auxiliary springs takes place very rapidly after the fork has passed through its normal position. The extensions k are downwardly directed at an angle of about 140‹, and the extensions l upwardly directed at an angle of about 145‹ to the links. The springs m are secured by pivotal members n. The extensions l may be formed in one with the outer components of friction dampers o.
Patent GB-315916-A (GB)
Title: Improvements in or relating to the manufacture of artificial rubber or rubber substitutes
IPC: C08K3/04
Filed: 1928-04-21
Abstract: 315,916. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). April 21, 1928. Caoutchouc, synthetic. - Finely divided carbon, metal oxides, colloidal silicie acid or the like is compounded with artificial rubber produced by the polymerization of erythrene, isoprene, dimethylbutadiene &c., by adding it to the hydrocarbon prior to polymerization, to obtain an improved product on vulcanization. In an example, erythrene or isoprene is shaken with egg albumen, water, and lamp black or active carbon at 60‹-70‹ C., until polymerization is complete.
Patent GB-1132039-A (GB)
Title: Improvements in or relating to processes for the production of polyamides
IPC: C08G69/26
Filed: 1966-03-17
Abstract: 1,132,039. Polyamides. SCHOLVENCHEMIE A.G. 17 March, 1966 [20 March, 1965], No. 11798/66. Heading C3R. Polyamides are produced by condensation of dodecamethylene diamine with an aliphatic or aromatic dicarboxylic acid component, either the acid ingredient comprising a branched chain acid or a mixture of several acids or a non-linear diamine of up to 12 carbon atoms being present. Acids specified include adipic, trimethyl adipic and terephthalic and their diamine salts, esters, halides and amides. The reaction mixture may also contain up to 50% of other diamines which may be aliphatic, alicyclic or aromatic and optionally substituted, up to 10% of aminoacids of lactums having at least 6 carbon atoms, 0À2-1% viscosity stabilizers and acids and amines having a functionality greater than 2. Compounds of these types specified include (#-amino-undecanoic acid, 3 - aminomethyl - 3,5,5 - trimethylcyclohexylamine, 2,2,4- and 2,4,4-trimethylhexamethylene diamine and mixtures thereof. The condensation may taken place at 150-300‹ C. under a N 2  atmosphere. A diluent, e.g. H 2 O or alcohol may be used and the reaction may be completed under reduced pressure.
Patent GB-1370464-A (GB)
Title: Grab for use in a rig  for excavating holes in which piles may  be subsequently constructed
IPC: B66C3/02
Filed: 1972-04-27
Abstract: 1370464 Grab buckets DELVA & CO 27 April 1972 [28 April 1971] 11798/71 Heading B8H A grab bucket comprises a central core member 1 having means 5 at its upper end for attachment to the lower end of a Kelly bar, hollow wing members 9 mounted around the core member, a jaw 15 pivoted to each wing member and having an outer wall 18 and two side walls 17, the walls all having free lower edges, and means 22 for opening and closing the jaw, each means 22 being housed within a wing and its associated jaw, and the wings and the jaws are so arranged and configured that when open they have a plan contour corresponding to the section of the hole to be excavated by the grab.
Patent GB-118010-A (GB)
IPC: A47C7/64
Abstract: 118.010. Lightfoot, J., and Goldstone, M. H. Oct. 13, 1917. Hat-holders and like supports.- A holder or fitting to enable a lady's hat or other article to be supported from the back of a theatre seat by means of a hat-pin is made from a sheet-metal blank with a tubular or corrugated part to receive the pin. A single corrugagation b may be formed centrally in the sheet-metal piece a, two short corrugations may be formed, one near the top and one near the bottom, or tubular parts may be formed along one or both edges of the sheetmetal piece. The fitting may be secured to the seat by spikes formed integral with the fitting, by a spring prong or pin like a safetypin, or by nails, screws, or sewing.
Patent GB-130131-A (GB)
Title: Improvements relating to Automatic or Semi-automatic Telephone Systems.
Inventor: LAIDLAW ERNEST ALEXANDER
IPC: H04Q1/32
Filed: 1918-07-19
Abstract: 130,131. Laidlaw, E. A. July 19, 1918. Automatic exchange systems.-The motor maynet of a selector is operated by a relay B energized by the discharge current of a condenser MF which is charged by the line relay A. The time during which the relay B retains its armature is determined by the constants of the discharge circuit, and is independent of the distortion of the impulses due to the line conditions. In the group selector shown, the relay A is energized over the calling line and closes the circuit of the relay V. which in turn energizes relay E, the relay F being short-circuited. At the commencement of the first impulse, the condenser MF is charged over contacts a<2>, v<2>, y<2>, and when the line circuit is again closed, the condenser is discharged through the relay B, which opens contact b<2> to remove a short circuit around a relay F, which energizes in series with relay E and prepares at contact f<2> the circuit of the lifting-magnet H. When the condenser is discharged, the relay B releases its armature, closing the circuit of the lifting-magnet H over contacts e<2>, f<2> Each interruption of the line circuit is thus repeated to the magnet H, the momentary short circuits of relay E over contacts b<2>, f<1> not being of sufficient duration for this relay to de-energize. At the end of the selecting-impulses, relay A remains energized and relay E releases its armature, dosing a circuit over contacts f<2>. e<2> for the rotary magnet D, which rotates the wipers. When an idle trunk is found, relay C is energized, disconnecting the rotary magnet D and extending the call to the next selector. The following sets of impulses are repeated in the same way by the relay B over its contact. b<3> to a group selector of the kind described in Specification 122,235.
Patent GB-571722-A (GB)
Title: An improved method of manufacturing sulphanilyl guanidine derivatives thereof
IPC: C07C311/64
Filed: 1941-09-18
Abstract: Sulphanilyl guanidine is prepared by the reaction of sulphanilyl fluoride with guanidine.  In place of guanidine itself derivatives thereof such as alkyl, aryl, or aralkyl substituted guanidines may be employed.  It is preferred to react the guanidine in the form of a salt such as the sulphate or nitrate in the presence of a solvent and of caustic alkali or other suitable acid acceptor.  In examples: (1) an acetone solution of sulphanilyl fluoride is added to a solution of guanidine sulphate in sodium hydroxide to give sulphanilyl guanidine; (2) the same compound is made by adding a pyridine solution of sulphanilyl fluoride to a solution of guanidine nitrate in sodium hydroxide. Specification 536,216 is referred to.