baber/WOPTO huggingface dataset:
Patent GB-519974-A (GB)
Title: Method of and means for reducing disturbances in wireless reception
IPC: H04B1/10
Filed: 1938-07-04
Abstract: 519,974. Wireless receiving systems. MEIER, K. H. July 4, 1938, No. 19798 [Class 40 (v)] Interference is reduced by the provision of a limiter, operating by anode current cut off or by saturation, and by transposing the signals to a higher frequency at which they are passed through tuned circuits, the number of which is dependant on the frequency, so that with a carrier wave modulated 30 per cent. the disturbance voltage at the output does not exceed 5 per cent. of the useful signal. The input circuit is preferably substantially aperiodic, but may include a resonant circuit 7 to suppress image frequencies when a superheterodyne receiver with a high intermediate frequency is used. The circuit 7 may be gang tuned with the local oscillator circuit, and the intermediate frequency circuits 3...6 may be tunable for selecting the signals to be received. The amplifier 2 may act as a limiter due to saturation or may be a valve having a screen grid with the anode voltage at most one-half of the screen grid voltage. A control voltage may be derived from the detector Fig. 2 (not shown) and applied through a circuit of long time constant to the limiter valve or valves to ensure that the incoming signal traverses the whole of the straight part of the grid voltage characteristic curve.
Patent GB-699984-A (GB)
Title: Improvements in or relating to ventilation louvers
IPC: E06B7/082
Filed: 1951-08-22
Abstract: 699,984. Ventilators. GORTH, E. E. Aug. 22, 1951 [Sept. 13, 19501, No. 19814/51. Class 137 In a ventilation louvre comprising over-. lapping S-shaped or double curvature plates curving into inner and outer limiting planes, each two adjacent plates produce a nozzle-shaped channel with a gap smaller at the outer limiting plane than at the inner. An air extraction screen comprises overlapping double curvature plates which form nozzle-like channels with an inlet 1 of larger cross-section than the outlet 2. The plates have curves 5, 6 on the inlet and outlet sides respectively, and wind flowing from directions a or b exercises a suction effect in the channel between adjacent plate edges 7, 8. Most of the current from direction c is diverted into directions a, b.
Patent GB-257909-A (GB)
Title: Improvements in exercising appliances
IPC: A63B21/055
Filed: 1926-08-11
Abstract: 257,909. Neumann, B. Sept. 2, 1925, [Convention date]. Exercising-apparatus.-An extensible tube e is connected to ball grips a, b by grooved wedges f which press the tube against the conical bore c of the grips. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of balls as securing members. This subject-matter does not appear in the Specification as accepted.
Patent GB-809896-A (GB)
Title: Improvements in or relating to hydraulic shock absorbers
Inventor: CARVER HENRY RICHARD
IPC: F16F9/40
Filed: 1957-06-24
Abstract: 809,896. Hydraulic shock absorbers. WOODHEAD-MONROE Ltd. June 24, 1957, No. 19851/57. Addition to 771,899. Drawing to Specification. Class 108(3) The anti-aeration sleeve or tube described in the parent Specification is formed with at least one canalure which constitutes anti-surge or baffle means.
Patent GB-530999-A (GB)
Title: Improvements in or relating to shaft furnaces
IPC: F27B1/22
Filed: 1939-07-07
Abstract: 530,999. Shaft furnaces. OLIVO, M. July 7, 1939, No. 19890. Convention date, July 9, 1938. [Class 51 (ii)] The blast supply to one or more rows of tuyeres 7, 8 of a shaft furnace is heated in the blast supply box 5 surrounding the shaft by gases withdrawn from the shaft through radiators 3, 4 the rear ends 3', 4<SP>1</SP> of which project into the blast supply box and may be provided with radiating fins. The gases pass from the radiators into gilled pipes 15, 16, which encircle the shaft, before issuing from the casing. Horizontal partitions 9 may divide the blast box into upper and lower compartments each separately supplied with blast and these compartments may be further subdivided by horizontal partitions 11, 12 provided with apertures which may be controlled for varying the temperature of the blast supplied to the upper and lower sets of tuyeres. The tuyeres and radiators 3, 4 may be directed tangentially in opposite directions to the shaft. Three or more rows of tuyeres may be employed. Valve controlled pipes 20 connect the pipes 15, 16.
Patent GB-709225-A (GB)
Title: Improvements in or relating to an alcohol synthesis process
IPC: C07C29/16
Filed: 1951-08-23
Abstract: Olefines, carbon monoxide and hydrogen are contacted in an initial carbonylation zone with a carbonylation catalyst to produce oxygenated reaction products comprising aldehydes which after removal of catalysts therefrom are hydrogenated in the presence of a hydrogenation catalyst, preferably a sulphactive catalyst, to produce alcohols, the products from the hydrogenation zone being distilled from higher boiling secondary reaction products to form a bottoms product and alcohols which are recovered and at least a portion of the bottoms product is recycled to the hydrogenation zone and additional amounts of alcohols thereby recovered.  Molybdenum sulphide (cf. Specification 664,974) is a preferred hydrogenation catalyst. Water may be added to the carbonylation stage (cf. Specification 668,963) and also to the hydrogenation stage which is preferably effected in the presence of 3 to 10 per cent of water (cf. Specification 671,608).  The quantity of recycle bottoms may vary from 5-50 per cent.  In a diagrammatic illustration an olefine feed containing 1-3 per cent of a cobalt soap, e.g. the naphthenate or stearate, is treated with H2 and CO in the volume ratio of 0.5 to 2 at 225-450 DEG  F. and 2000-4000 p.s.i.g. optionally with the addition of up to 10 per cent of water calculated on olefine feed. Carbonylation products are cooled, passed to a separator and unreacted gases preferably recycled. The liquid products may be in part recycled to the reactor (cf. Specification 647,363) and are subjected to temperatures of 200-400 DEG  F. to deposit catalyst as metal optionally in the presence of hydrogen as a stripping gas, preferably at 15-200 p.s.i.g.  Catalyst free products are hydrogenated in the presence of 10 per cent molybdenum sulphide on an activated carbon at 2500-4500 p.s.i.g. and 300-600 DEG  F., preferably 2000-3500, especially 2800-3200 p.s.i.g. and 400-500 DEG F. and preferably in the presence of up to 50 per cent, especially 1-10 per cent, of water.  Hydrogenation products are cooled and passed to a separator to remove hydrogen liquid products being distilled, optionally after removal of water, to remove unreacted olefines the residue being further distilled to provide alcohols and a bottoms product at least a portion of which is returned to the hydrogenation zone.  Examples of the above process are provided using a C7 olefine as feed and Tables given to shown the increased yields of alcohols and aldehydes and decreased amounts of bottoms products over conventional methods of operation. Specification 671,833 also is referred to.
Patent GB-584193-A (GB)
Title: Improvements relating to door and like fastenings
IPC: E05C3/16
Filed: 1944-10-16
Abstract: 584,193. Door &c. fastenings. WILMOTBREEDEN, Ltd., and SPICER, H. J. Oct. 16, 1944, No. 19962. [Class 44] A door or like fastening comprises a hollow body made from a pair of substantially similar channel-shaped parts a<1>, a<2>, a catch-piece f pivotally mounted on the body at e and adapted to co-operate with a striking-plate, a channelshaped plunger g having an end pivoted at f<1> to the catch-piece, a spring h acting on the other end of the plunger, and a rotatable cam-like member i extending transversely through the body and plunger and adapted to actuate the latter. The cam-like member is provided with a square axial hole for a spindle, and with projections i<1> which normally bear against the outer ends of slots k in the plunger and which extend through slots m in the body. A keyoperated locking-piece o, which may be provided, is mounted pivotally in the body and is adapted to engage with an upturned end of a slot q in the plunger.
Patent GB-365510-A (GB)
Title: Improvements in electric discharge tubes
IPC: H01J61/18
Filed: 1930-07-01
Abstract: 365,510. Dischargelamps. SPANNER, H. J., 37A, Sachsischestrasse, Wilmersdorf, Berlin. July 1, 1930, No. 19969. Convention date, July 2, 1929. [Class 39 (i).] Tubes having non-vaporizable electrodes and operating with a negative-glow discharge are provided with a filling of mercury vapour mixed with one or more inert or rare gases other than neon and with the vapour of barium, caesium, magnesium, cadmium or thallium, such metal being present in quantity adequate to ensure the presence of the vapour. The gas is preferably a mixture of 80 per cent argon and 20 per cent helium and the electrodes are double spirals of nickel or steel. The tube produces ultra-violet ray s without the visible red rays given by tubes containing neon. The Specification as open to inspection under Sect. 91 (3) (a) comprises also tubes operating with positive-column and arc discharges with activated electrodes, refers to other fillings including tin vapour and gases such as argon, krypton and xenon and to a combination of mercury, barium and argon and includes drawings of a negative-glow tube filled with argon, barium and magnesium and of a tube with activated electrodes, Fig. 2 (Cancelled). This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specifications 155,783, 301,412, and 346,808, [all in Class 39 (i), Electric lamps, Arc &c.].
Patent GB-898900-A (GB)
Title: Improvements in or relating to apparatus for mixing solid particles with a gaseous fluid stream, in particular for burning purposes and applications thereof
IPC: F23D11/10
Filed: 1958-06-23
Abstract: 898,900. Spray-producers. DE LA FOURNIERE, M. M. P. R. June 23, 1958 [June 21, 1957], No. 19973/58. Class 69 (3). [Also in Groups XI and XIII] An apparatus for mixing solid particles or a liquid with a gaseous fluid stream is exemplified by a burner comprising a spiral chamber 1 fed with air by a fan 13 and discharging whirling air through a central orifice 2 into an axial pipe 6 extending into a combustion tube 5. An oil fuel pipe 7 extends through the spiral chamber and the axial pipe 6 and terminates at the centre of the whirling air. The depression at the end of the fuel pipe causes the fuel to flow from a tank 9 into the whirling air where it is atomized. The discharge end of the fuel pipe comprises a series of orifices in the wall of the pipe adapted to rotate the fuel in opposition to the whirling air. The interior of the tank 9 is maintained at the delivery pressure of the fan 13 by a pipe 15. The combustion tube 5 extends from a central aperture 4 in a second spiral chamber 3 which is also fed with air either by the fan 13 or by the suction effect of the air in the axial pipe 6. The air in the two spiral chambers may rotate in the same or opposite direction. A crosssection of the spiral wall of each spiral chamber is a logarithmic spiral. The spiral wall may be inclined towards the axis of the chamber, Fig. 5 (not shown). Specification 879,224 is referred to.
Patent GB-972976-A (GB)
Title: Novel trifluoromethyl-benzophenones and the preparation thereof
IPC: C07C237/00
Filed: 1960-12-09
Abstract: The invention comprises (a) 2-chloro -5- trifluoromethylbenzophenone and its preparation by the acid hydrolysis of 2-chloro -5- trifluoromethylbenzophenon imine hydrochloride, and (b) 2-chloro-21, 5-bis (trifluoromethyl) benzophenone and its preparation by the reaction of 2-chloro -5- trifluoromethyl-benzoyl chloride with o-trifluoromethylphenyl magnesium bromide and hydrolysis of the magnesium complex obtained. Specifications 924,322 and 972,973 also are referred to.
Patent GB-390987-A (GB)
Title: Improvements relating to the production of the anhydrides of volatile fatty acids
IPC: C07C51/56
Filed: 1932-07-15
Abstract: <PICT:0390987/IV/1> Aliphatic acid anhydrides such as acetic anhydride are produced by treating a mixture of the acid vapour with carbon monoxide and chlorine (which may be first partially converted into carbonyl chloride by passing over carbon) in presence of a catalyst comprising carbon, so as to produce the acid chloride, and then passing the reaction vapours together with more of the acid through an organic liquid of high boiling point to produce the anhydride.  Excess of chlorine is avoided, and it is preferred to have an excess of carbon monoxide and of fatty acid.  The first reaction may be effected with active carbon at 170 DEG  C. and the second with a -chlornaphthalene or a suitable hydrocarbon or nitro-body at 180 DEG  C., but the first part of the treatment with the organic liquid may be effected at room temperature.  As the production of carbonyl chloride and acid chloride are strongly exothermic, it is preferred to apply cooling where these reactions are effected.  Dilute carbon monoxide, such a producer gas, may be used.  In an example, producer gas from a producer 1 freed from water vapour is mixed with chlorine from an apparatus 2 and passed over active carbon in a lead apparatus 3 which is not allowed to rise above 180 DEG  C.  Acetic acid vapour from a vessel 14 is added in a vessel 4, and the mixture passes to a lead apparatus 5 containing active carbon kept at 160-180 DEG  C.  The vapours from this second catalysis, containing acetyl chloride, are cooled at 6 and passed into a column 7 and still 9, 8 which receive chlornaphthalene from a tank 13.  Acetic acid is added at the upper part of the column 7 from the vessel 14, the liquid from the bottom of the column 7 passing into the still 9, 8.  Hydrochloric acid passes off at 15 and is absorbed in a scrubber 16.  The solution of acetic anhydride and acetic acid in chlornaphthalene flows into a vessel 10 at 180 DEG  C. and is finally fractionated in a vacuum column 11, the chlornaphthalene being returned by a pipe 12 to the tank 13.  The process may be used for the production of mixed anhydrides by reacting the chloride of one acid with another acid.ALSO:Carbonyl chloride is produced by passing a mixture of carbon monoxide and chlorine into a tower containing active carbon at 170 DEG  C.
Patent GB-1208093-A (GB)
Title: Improvements in or relating to aerials
IPC: H01Q21/00
Filed: 1969-04-21
Abstract: 1,208,093. Phase shifters. C.S.F. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. 21 April, 1969 [19 April, 1968], No. 20156/69. Heading H1W. [Also in Division H4] An aerial comprises a rectangular waveguide G which has an array of transverse slots F 1 , F 2 , F 3 , ... in one broad wall which are spaced apart by #/4 (# = guide wavelength at mean operating frequency). Inside the guide is a longitudinal strip R of ferro-electric material in which there is a longitudinal hole containing a conductive wire or strip C. Power is fed at one end of the waveguide, and a matching load is provided at the other, so that the array of slots radiates. A variable D.C. voltage may be applied from a source S to polarize the strip R and change its permittivity. This alters the velocity of propagation in the waveguide and, consequently, the phase shift between slots, so that the directivity of the aerial is changed. The waveguide may be operated in a TE mode or in the TEM mode. The strip R may be made from a powder of mixed barium-strontium titanites in suspension in P.T.F.E. The different Curie points of the titanite components enable operation over a wide temperature range. In a second embodiment slots in a broad wall of a rectangular waveguide are angled obliquely, with adjacent slots oppositely angled, the slot spacing being #/2 (Fig. 2, not shown). In a third embodiment a conductive strip is placed on the upper part of a ferro-electric strip (Fig. 4, not shown). In a fourth embodiment, a ferroelectric strip comprises several layers, each layer having a different Curie point (Fig. 5, not shown). In a fifth embodiment, instead of a strip of ferro-electric material a series of longitudinally spaced blocks having various Curie points is arranged under a conductive strip (Fig. 6, not shown).
Patent GB-868452-A (GB)
Title: Method and apparatus for making bags
IPC: B31B23/00
Filed: 1958-06-24
Abstract: 868,452. Dust coverings for garments. NATIONAL DISTILLERS & CHEMICAL CORPORATION. June 24, 1958 [June 25, 1957], No. 20158/58. Class 52(1). [Also in Groups VIII, XVI, XVII and XXIV] A bag for protecting garments while they are hanging on a coat-hanger is made in a machine (see Group XVII) from a flattened, gussetted tube of polyethylene film. Converging seams are formed at 27 by heat-sealing (see Group VIII) and a slot for the hanger hook is cut at 70. The lower end 28 of the bag is open.
Patent GB-1512203-A (GB)
Title: Rolls for use in profiling film
IPC: F16C13/00
Filed: 1974-05-08
Abstract: 1512203 Rollers F M ASPIN 6 May 1975 [8 May 1974] 20197/74 Heading F2U A heated roller comprises a fluid (e.g. oil) inlet conduit 36 and a fluid outlet conduit 40 extending longitudinally through it, a plurality of passageways 28 disposed between the outer periphery of the roller and the inlet and outlet conduits, each passageway 28 receiving fluid from the inlet conduit 36 in the central region of the roller and delivering fluid to the outlet conduit 40 adjacent the ends of the roller. In the embodiment shown the roller has a stationary core 50 about which a pair of sleeves 16, 18 are rotatable, the passageways 28 being in the outer surface of sleeve 18. Annular grooves 22 and 24 in the inner surface of sleeve 18 communicate through passages 42 with outlet conduit 40 and through conduits 30, 32 with the ends of passages 28. An annular groove 26 communicates through passage 38 with the inlet conduit 36 and through conduits 34 with the passages 28. In an alternative embodiment (Fig. 2, not shown) the core rotates and one sleeve only is provided. The outer surface of the roller can be grooved as at 44. The roller can be used, forming a nip with another, in profiling plastics film (e.g. of polypropylene) to produce longitudinal strands. The heating heats the roller more in the middle to produce a slight bowing.
Patent GB-441016-A (GB)
Title: Process for the manufacture of condensation products
IPC: C07C57/34
Filed: 1934-07-10
Abstract: Aliphatic dicarboxylic acids or acid anhydrides substituted by residues of saturated aliphatic or alicyclic hydrocarbons or aryl or arylene derivatives thereof are prepared by interacting saturated aliphatic or alicyclic hydrocarbons, ethers or ketones or aryl or arylene derivatives thereof which contain at least one hydrogen atom attached to at least one aliphatic carbon atom and all the aliphatic atoms of which are connected by single bonds with a -b -unsaturated aliphatic dicarboxylic acid anhydrides or compounds which are converted into these anhydrides under the reaction conditions.  The reaction may be accelerated by a copper catalyst and by the use of heat and pressure.  Suitable starting materials include paraffinic hydrocarbons such as heptane or paraffin oil, completely or partially saturated cyclic hydrocarbons such as cyclohexane, decahydronaphthalene and tetrahydronaphthalene, aromatic hydrocarbons with saturated side chains such as toluene, ethylbenzene and propylbenzene, ethers such as dibenzyl ether and ketones such as 2-methylanthraquinone, and maleic anhydride, citraconic acid anhydride, maleic acid and fumaric acid.  In examples: maleic acid is reacted in the presence of copper bronze or in a vessel with a copper lining with (1) ethylbenzene, (4) dibenzylether, (5) heptane, paraffin oil, (6) cyclohexane, and (7) decahydronaphthalene, or fumaric acid is reacted in the presence of copper bronze powder with ethylbenzene.  The Specification as open to inspection under Sect. 91 also refers generally to the reaction of organic compounds which contain at least one aliphatic carbon atom combined with at least one hydrogen atom and all the aliphatic atoms of which are connected by single bonds with a -b -unsaturated aliphatic dicarboxylic acid anhydrides or compounds which are converted into these anhydrides under the reaction conditions.  An inert solvent or catalysts such as iodine or sulphur may be used.  Suitable starting materials include hydrogenated colophony, diethylbenzene, methylnaphthalene, acetophenone and cyclohexanone.  In examples there is described the condensation of (1) maleic anhydride and tetrahydronaphthalene or acetophenone in the presence of iodine; (5) maleic anhydride and cyclohexanone; (7) maleic anhydride and heptane in the presence of iodine; (8) decahydronaphthalene and citraconic anhydride in the presence of iodine; (9) hydrogenated colophony and maleic anhydride in the presence of colophony and (10) iso-propylbenzene and maleic anhydride in the presence of quartz.  This subject-matter does not appear in the Specification as accepted.
Patent GB-783816-A (GB)
Title: Improvements in stabilising ships' hulls
IPC: B63B39/06
Filed: 1955-07-14
Abstract: 783,816. Stabilizing ship's hull. DODDS, R. N. May 24, 1956 [July 14, 1955], No. 20394/55. Class 113. A ship's hull has in its bottom anti-rolling means comprising one or more invertedlongitudinal channels symmetrically arranged with respect to the centre keel of the hull and a dependent anti-rolling keel located in the or each such inverted channel and spaced from both longitudinal walls thereof. In one embodiment two channels and anti-rolling keels are provided at longitudinal intercostal girders on either side of the centre keel. In the smaller ship shown in Fig. 2 one channel 10 is provided in the space 6 which forms a water ballast tank between the false bottom 2 and the true bottom 5. The keel plate 7 is cut away and supports the anti-rolling keel 13 which is supported by horizontal stiffeners 16. Water intake pipes 19 and air release pipes 20 ensure that there may always be a flow of water in the channel.
Patent GB-341009-A (GB)
Title: Process and apparatus for the continuous manufacture of artificial textile threads
IPC: D01D10/04
Filed: 1929-07-03
Abstract: <PICT:0341009/IV/1> <PICT:0341009/IV/2> The threads from a group or groups of spinnerets are united into a ribbon of parallel strands which ribbon, after coagulation and fixing, is drawn through washing, desulphurizing, bleaching &c. baths and dried.  As shown, applied to viscose, groups of threads spun in the coagulating bath 1 are passed over the collecting roller 2 and fork 4 and are directed by a roller 5 to drawing rollers 6 from which the ribbon 10 passes to a fixing-bath 11 and to washing, desulphurizing and bleaching baths 12, 13, 14.  The ribbon is passed around porcelain rollers 9 in each bath as shown in Fig. 2, the rollers being preferably grooved to guide the ribbon.  The fixing-bath comprises a dilute acid spray 8, Fig. 1. Squeeze rollers 17 are arranged at the entrance to each bath to drain the material.  The ribbon issuing from the bath 14 is dried by passage around heated drying-rollers 18 associated with a hot air distributer 19.  Each of the vats 12-14 is adapted to be lowered through bevel &c. gear to give access to the rollers 9. The rollers 9 may be driven at different speeds so as to obtain the desired denier for the strands; or, in some cases, they may be driven by the ribbon 10.