baber/WOPTO huggingface dataset:
Patent GB-1329174-A (GB)
Title: Processes for preparing polyphenylene ethers
IPC: C08G65/46
Filed: 1971-04-19
Abstract: 1329174 Purification of polyphenylene ethers GENERAL ELECTRIC CO 19 April 1971 [16 Feb 1970] 20520/71 Heading C3R In a process for forming polyphenylene ether by reacting a phenol with an oxygen-containing gas in a solvent in the presence of a copperamine complex catalyst, the solution being capable of liquid-liquid extraction with aqueous acid, the copper-amine catalyst residue is separated from the reaction solution and the reaction terminated by passing the reaction solution through an extraction vessel countercurrently to an aqueous acid solution. The reaction solution may be passed upwards through a column in countercurrent to acid solution introduced at the top or at a mid-point of the column, in the latter ease water enters the top of the column to extract acid from the polymer solution. The acid solution may be 10% to 30% aqueous acetic acid but hydrochloric, nitric or sulphuric acid may be used. The pH of the effluent acid may be raised above 9À5 to separate an amine layer and precipitate copper oxide. Examples are given.
Patent GB-257604-A (GB)
Title: Vacuum tubes
IPC: H01J7/18
Filed: 1926-08-20
Abstract: 257,604. Loewe, S. Aug. 25, 1925, [Convention date]. Vacuum tubes; R÷ntgen-ray tubes.-A vaporizable metal, such as magnesium, for absorbing gas, is present in the alloy of which part of the electrode system is constructed, in such small quantity that the deposit produced is not sufficient to impair the transparency of the bulb. Magnesium, with or without calcium, is preferably alloyed by heating sheet nickel, tungsten, tantalum or molybdenum to incandescence in a vacuum furnace, and exposing it to magnesium &c. vapour. Such an alloy gives off minute quan. tities of magnesium when heated in the bulb at incandescence and in a high vacuum. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of magnesium for improving the electron emission of a cathode. This subject-matter does not appear in the Specification as accepted.
Patent GB-1298123-A (GB)
Title: Carrier frequency generator
IPC: H04J1/06
Filed: 1970-04-29
Abstract: 1298123 Frequency generators; multiplex systems INTERNATIONAL STANDARD ELECTRIC CORP 29 April 1970 [5 May 1969] 20597/70 Headings H3F H3P and H4R In a generator for one or more carrier frequency signals harmonics are generated in a first multiplier 2 from a standard frequency source 1, the harmonic 2n or (2p-1) where n is any integer and p any integer greater than unity is selected by means of a first band-pass filter 3 and is subsequently formed into a train of sharp pulses having the repetition frequency 2n# or (2n-1)#, where # is the frequency of the source 1, in a second multiplier 4. A frequency m 2n# or m (2p-1)# where m is any integer as the case may be is selected by a second band-pass filter 5 from the train of sharp pulses and is divided by the factor 2n or (2n-1) as the case may be, in a digital divider. In the case where division is by 2n the square wave pulse train thus obtained and having a repetition frequency m# is used directly as a carrier signal; alternatively it may be converted to a sine wave by means of a bandpass filter. In the case where division is by (2p-1) the waveform is either converted to a mark-to-space ratio of 1:1 by means of a pulse shaper 9, or a sinewave selected by means of a band-pass filter 8. The embodiment comprises an arrangement for generating carriers for secondary groups having the frequencies 1116 1364, 1612 ... 4092 and 430 KH2, all odd harmonies of 124 KHZ supplied by generator 1, the factor 2n being 10 and m being 35.
Patent GB-1331143-A (GB)
Title: Shaped articles composed of linear polyethylene terephthalates
IPC: C08K5/42
Filed: 1971-04-19
Abstract: 1331143 Alkyl - 2 - (γ - sulphonatopropoxy)- benzoates BADISCHE ANILIN- & SODAFABRIK AG 19 April 1971 [31 Jan 1970] 20648/71 Heading C2C [Also in Division C3] Compounds of the formula in which x is 3, M is sodium and R is methyl, cyclohexyl or #-methoxyethyl and the compound in which x is 3, M is lithium and R is isobutyl are prepared by reacting the corresponding phenols with stoichiometric amounts of 1,3-propanesultone and the corresponding alkali metal alcoholates at from 40 to 80 C.
Patent GB-650732-A (GB)
Title: Improvements in railway rails
IPC: E01B5/02
Filed: 1947-07-30
Abstract: 650,732. Rails. BURKHARDT, G. R. July 30, 1947, No. 20688. Convention date, Dec. 15, 1944. [Class 104(ii)] A railway rail has a section such that the ratio of the width of the head 1, CH, to the width of the web 2 at the head, UH, lies between 2¢ and 4, and the ratios of the head and base web fillets 4, 5, RH and RB, to the widths of the web at the head and base; UH and UB, lie between 0.8 and 1.6. Specification 650,711 is referred to.
Patent GB-330163-A (GB)
Title: Improvements in, or relating to, dust separators and collectors
IPC: B04C3/00
Filed: 1929-07-05
Abstract: 330,163. Dorman, Long & Co., Ltd., and Kirby, M. R. July 5, 1929. Density separators.-A dust separator or gas cleaner has inner and outer chambers; dust laden air is supplied to the inner chamber, and the dust is thrown outwards centrifugally through the wall of the inner chamber into the outer chamber from which it is collected. The inner chamber 5, Fig. 1, consists of a helical tube of any convenient cross-section, and is centrally disposed within the chamber 1. Vertical slots 8 are formed in the outer wall of the chamber 5 so that material passes in a tangential direction through the wall. A fan or similar apparatus is attached to the pipe 7 and draws dust-laden air in through the pipe 6. The clean air passes onward to the pipe 7 while the dust is thrown out through the slots 8 into the chamber 1 whence it falls into the collecting chamber 4. Any air which passes through the slots 8 is withdrawn from the chamber 1 through holes in the pipe 7. Plates 15 may be placed vertically in the chamber 1 to assist the separation. The inner chamber may be formed of cylindrical casings with a helical plate between them. In the modification shown in Fig. 4, the inner chamber is formed of two helical tubes 16, 17 ; the dust laden air enters through the pipe 6 and the ports 25, passes through the tubes 16, 17 in parallel and emerges through the ports 27 and the pipe 7. In another modification the pipes 6, 7 are arranged at the bottom of the apparatus. In another modification the inner chamber 5, Fig. 9, is cylindrical and contains a paddle wheel 31 to assist in rotating the gas. The inlet 6 communicates tangentially with an annular chamber 37 having a helical bottom 38. A volute discharge chamber 39 is arranged at the top of the chamber 5. A tunnel 40 gives access to the lower bearing 33 and doors 42 provide access to the chamber 1.
Patent GB-158015-A (GB)
Title: An improved stay for casement and like windows
IPC: E05C17/24
Filed: 1919-08-23
Abstract: 158,015. Willoughby, E. F., and Revill, E. M. B. Aug. 23, 1919. Stays for hinged windows comprise a bar C fixed in brackets C<1> screwed to the frame, a sleeve D on the bar and a link E pivoted to the sleeve and at the other end pivotally held in the forked extension of a pin H rotatably mounted in a bracket G on the sash. The sleeve is clamped on the bar to hold the window in any position by means of a thumb-nut D<1>. The window may be locked in the closed position by a catch J pivoted to the pin H and adapted to engage the bar C, a thumb piece j being provided on the catch.
Patent GB-913054-A (GB)
Title: Improvements in or relating to transformer arrangements
Inventor: WILLIAMS FREDERICK CALLAND
IPC: H01F29/12
Filed: 1958-04-08
Abstract: 913,054. Transformers; induction machines. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 2, 1959 [April 8, 1958], No. 20860/59. Divided out of 913,053. Drawings to Specification. Classes 35 and 38 (2). The subject-matter of this Specification is included in Specification 913,053, but the claims are concerned with a combination of a polyphase transformer and an induction motor (or a winding thereof) in which the transformer primary winding is arranged in a slotted core so that the phase of the effective current flowing in the conductors of any slot is a logarithmic function of the distance of that slot from a first slot, or of the slot number, and the secondary is connected to the winding it supplies which is also on a slotted core (the stator core) in such a way as to provide for the phases of the currents in the slots carrying the third winding a logarithmic to linear conversion so that there are equal phase differences between the currents in adjacent slots of the third winding, these phase differences being variable by relative movement of the primary and secondary windings.
Patent GB-1223875-A (GB)
Title: Phenylbutazone derivatives
IPC: C07D231/22
Filed: 1968-05-02
Abstract: 1,223,875. Phenylbutazone derivatives. LABORATORIOS HOSBON S.A. 2 May, 1968 [6 June, 1967], No. 20890/68. Heading C2C. Phenylbutazone derivatives of formula in which R is a butyl or 3-butoxy group, are prepared by reacting an alkali metal enolate of the appropriate pyrazolone with 3,4,5-trimethoxybenzoyl chloride, preferably in a mixed solution of water and a solvent of average polarity. Pharmaceutical compositions of the above compounds having anti-inflammatory, analgesic and antipyretic activity are administered orally, rectally, parenterally or by injection.
Patent GB-1023498-A (GB)
Title: Process for the isomerisation of dichlorobutenes
Inventor: COSTAIN WINSTON
IPC: C07C17/358
Filed: 1963-05-24
Abstract: Dichlorobutenes are isomerized into other dichlorobutenes by contacting them with an aqueous solution of an alkali metal halide, ammonium halide or cupric halide containing a cuprous salt. Specified starting compounds are 1,4-dichlorobutene-2 and 3,4-dichlorobutene-1. Preferred salts for use in the aqueous solution are NaCl, NH4Cl or CuCl2, and CuCl or CuBr. Preferably the solution is maintained at pH 3-7.3 by addition of a buffer salt and/or acid binding agent, e.g. sodium or ammonium acetate or cupric acetate; or NaOH, CuCO3 or hydrated copper oxide.  Preferred contact temperature is 20-60 DEG  C.
Patent GB-226757-A (GB)
Title: Improvements in centrifugal extractors
IPC: D06F49/06
Filed: 1924-09-04
Abstract: 226,757. British-American Laundry Machinery Co., Ltd., (American Laundry Machinery Co.). Sept. 4, 1924. Driving; suspending. - A centrifugal machine for extracting water or other liquid from fabrics or the like has a basket with a perforated wall 8 supported on the driving spindle 6 in the curb 3. Arched members 4 support the curb. and a cross piece 12 carries an intermediate bearing for the shaft, the other bearings 9, 5 being at the bottom of the curb and above the. electric motor 16. The field frame of the motor is carried by the cross-piece 12. The arched members 4 are hung upon a pivot pin 13 which is supported upon a pin 15 at right angles to it. With this arrangement the motor, basket, and curb swing together in the event of the load being unbalanced.
Patent GB-248642-A (GB)
Title: Improvements in or relating to windows
IPC: E06B3/50
Filed: 1925-08-21
Abstract: 248,642. Pittar, G. F., Dyson, E. H., and Hayward's, Ltd. Aug. 21, 1925. Windows. - Two sashes pivoted to the frame at D, D<1> have a pin-and-slot connection with two levers C pivoted to the frame at F. The frame is preferably of L-section and provided with double stops for each sash in the closed position. The slots have offset recesses in which the pins C<1>, C<2> rest without jamming when the windows are fully opened.
Patent GB-1529961-A (GB)
Title: Conveyor systems for cigarettes and similar rod-like articles
IPC: B65G43/00
Filed: 1975-05-16
Abstract: 1529961 Conveying cigarettes MOLINS Ltd 14 May 1976 [16 May 1975] 20962/75 Heading B8A Cigarettes at the junction of conveyers 44<SP>1</SP>, and 52<SP>1</SP> (Fig. 3), and a shoot 48<SP>1</SP>, 50<SP>1</SP>, bear on a driven conveyer band 54A<SP>1</SP>, which when strained conversely by the pressure of the cigarettes, may operate a sensor cam 60<SP>1</SP> to control the speeds of the conveyers. The shoot may be replaced by opposed conveyer bands (12), (14), (Figs. 1, 5 and 6, not shown). In this case there may be no conveyer 44<SP>1</SP>, this being replaced by a guide surface (88). A conveyer 57 acting to confine the upper surface of the cigarettes on the conveyer 52<SP>1</SP> may be formed by an extended section (56) of the sensor conveyer 54A<SP>1</SP> (Figs. 2 and 5, not shown). In Fig. 4, the operative run of the sensor conveyer is disposed at an angle, and controls the flow of cigarettes at the upper end of a pair of opposed conveyer belts 66, 68, of the kind described in Specification 1,299,174.
Patent GB-946809-A (GB)
Title: Improvements in or relating to rotary pump systems comprising non-positive displacement pumps
IPC: F16K11/072
Filed: 1961-06-09
Abstract: 946,809. Central heating systems. PLUMETTAZ S.A. June 9, 1961 [June 28, 1960; May 4, 1961], No. 20978/61. Heading F4U. [Also in Divisions F1 and F2] Flow in a pipeline of a central heating installation is normally maintained by a device incorporating a centrifugal pump 31 connected across the inlet-outlet passage 5-6 of the device by a rotary disc valve 12. A flap valve 37 carried by the rotary valve 12 is held closed by the pump outlet pressure and prevents direct flow in the passage 5-6 when the pump is running, but on breakdown or other stoppage of the pump direct flow through the flap valve is maintained by a thermosiphonic head in the system. The valve 12 is manually rotatable to a position in which the pump is isolated from the passage 5-6.
Patent GB-441689-A (GB)
Title: Improvements in stringed musical instruments
IPC: G10C3/16
Filed: 1934-07-20
Abstract: 441,689. Stringed musical instruments. RHODES, J. J. K., Bank-Hez, Hest Bank, near Lancaster. July 20, 1934, No. 21200. [Class 88 (ii)] In a keyboard stringed instrument each string s is plucked by a plectrum a on a carrier b pivoted at c in a vertical hoop h adjustable on the key-lifted jack d. Normally, gravity maintains the carrier b against abutment t, by which abutalso the carrier is firmly supported until the plectrum a passes, and thereby sounds, the string. During this movement a pin p on the carrier passes on the inner side of a fixed cam k, contact of the pin with a fixed spring l then tilting the carrier so that during the return movement the pin passes on the outside of the cam and the plectrum is prevented from contacting with the string. The jacks may be mounted in a rack moved by a pedal &c. actuated cam against the action of a spring, so that more or less of each plectrum point engages with its string, to control loudness; or sufficient movement may be given to silence the action. The invention is also applicable to automatic instruments, and to soundboard-less instruments with electric transmission.
Patent GB-258069-A (GB)
Title: Firewood splitting tool
IPC: B27M1/00
Filed: 1925-08-25
Abstract: 258,069. Flooks, G. E. Aug. 25, 1925. Splitting. - Firewood is split by being pressed or forced on the edge a of a hollowsided wedge b on a base c.
Patent GB-239701-A (GB)
Title: An improved castor for furniture, applicable also as a roller for trucks or for analogous purposes
IPC: B60B33/00
Filed: 1924-09-10
Abstract: 239,701. Adamson, E. Sept. 10, 1924. Castors.-Rollers 8, of coned formation, are mounted in pairs on a bracket 4 so that they may rotate about axes which are inclined to each other in a plane offset from and parallel to the axis 1 about which the bracket 4 revolves. Ball bearings may be provided at 17 and 19.
Patent GB-962908-A (GB)
Title: A system for protecting capacitor type bushings in high tension equipment
Inventor: SMITH JOHN WALTER FREEMAN
IPC: H02H3/36
Filed: 1960-06-18
Abstract: 962,908. Protective systems. ENGLISH ELECTRIC CO. Ltd. May 17, 1961 [June 18, 1960], No. 21492/60. Heading H2K. A system for detecting breakdown of capacitor-type bushings 10 in a multi-phase equipment by detecting changes in the capacitor currents through the bushings not due solely to changes in potential across the bushings, comprises a device for each phase for comparing the magnitude of the capacitance current through the associated bushing with the magnitude of a second current proportional either directly to the phase potential or a combination of the capacitance currents in all the bushings. In Fig. 1, the outer conducting layer of each bushing 10 is connected to earth through a transformer 13 which supplies relay windings 16a, 17a of balanced beam relays 16, 17. Potential transformers 12 connected to the line conductors 11 supply the windings 16b, 17b of the relays with currents dependent on the line voltages. Should an increase in any of the capacitance currents occur which is not caused by an increase in line voltage, the increased current in the appropriate winding 17a causes the relay 17 concerned to close its contacts 17c. Similarly, a reduction in a capacitance current causes a relay 16 to close its contacts 16c. The relays 16, 17 may be connected to operate flag relays, one per phase, and to a common timer operable to trip a circuit-breaker or give an alarm. In a modified arrangement, Fig. 2 (not shown), the second current is provided by the sum of the capacitance currents. In this case a further winding on each relay may be energized from a constant voltage supply, Fig. 3 (not shown). In a further arrangement, Fig. 4 (not shown), a single " hinged armature " relay may be used for each bushing and reference is also made to the use of double-wound moving coil relays.
Patent GB-630948-A (GB)
Title: A process for the manufacture of haemostatic tampons
IPC: A61L15/32
Filed: 1947-08-07
Abstract: 630,948. Surgical dressings. ROCHE PRODUCTS, Ltd. (Hoffman-La Roche & Co., Akt.-Ges., F.). Aug. 7, 1947, No. 21527. [Classes 81(i) and 81(ii)] Hµmostatic thrombonic gelatin bandages and tampons are formed by adding thrombin to an aqueous gelatin solution, transforming the solution obtained to a foam, drying in vocuo at low temperature and adapting the product to the requirements of the intended use. On contact with a wound, the gelatin dissolves, freeing the thrombin which transforms the fibrinogen of the blood to fibrin, thus closing the wound with a fibrin film. Antiseptics such as thymol, a mixture of the methyl and ethyl esters of p-hydroxybenzoic acid or sulphamides and substances accelerating cicatrization such as panthenol, may be added. Examples are given.
Patent GB-1234878-A (GB)
Title: A continuous method of making steel
IPC: C21C5/56
Filed: 1969-04-28
Abstract: 1,234,878. Steel production. NIPPON KOKAN K.K. April 28, 1969 [May 9, 1968], No.21531/69. Heading C7D. In a continuous method for producing steel, the pig iron is desulphurized and dephosphorized while applying mechanical agitation in the region of the slag/metal interface, oxygen being injected during the removal of P; the slag is then removed while pouring the melt into a converter; and oxygen is injected to decarburize the melt. The removal of P and S can be effected in one or more tanks, and the decarburizing furnace may be mounted on a rotatable platform to carry it to charging and refining stations.
Patent GB-381638-A (GB)
Title: Improvements in slub catchers or clearers for yarns or threads
IPC: B65H63/06
Filed: 1931-07-29
Abstract: 381,638. Yarn clearers. AMBLER, G. H., Chellow Grange, Bradford, and HOLT, H., Atlas Iron Works, Whitworth Road, Rochdale. July 29, 1931, Nos. 21621/31 and 15269/32. [Class 120 (ii).] A slub catcher or clearer comprises a combined slit and guide to be approached at an acute angle by the yarn, and formed of stationary or movable members having a gap between them of width equal to the size of yarn intended to pass forward, together with a knife or comb spaced from the slit so that small knots may be guided to the end of the slit and pass on, whereas large knots are checked by the knife or comb. The slit c, Figs. 1 and 2, is formed by two stationary arms a, b whose distance apart is adjustable by means of the bolt f. A knife d is spaced from the arm b by a wedge-shaped distance-piece h and is adjustably secured by a bolt g. The yarn c approaches the guide slit at an acute angle, small knots which will not pass through the slit are drawn along between the knife and the arms a, b, being guided by the slit, and eventually pass round the ends of the arms a, b ; large knots are drawn along and caught by the knife d. The knife or comb may be provided with a right-angled projection d<3>. The arms a, b may be curved to facilitate threading. In a modified form, Fig. 7, the guiding slit is movable and is constituted by two discs m mounted on the same axle m and spaced from one another. The yarn D passes between the discs, small knots are drawn between the knife blade q and the discs and then round the periphery of the discs ; large knots are caught by the knife q.
Patent GB-1484076-A (GB)
Title: Load-dependent brake pressure regulators for motor vehicles
IPC: B60T8/18
Filed: 1975-05-21
Abstract: 1484076 Load responsive brakes ROBERT BOSCH GmbH 21 May 1975 [11 Sept 1974] 21695/75 Heading F2F  A load-responsive brake pressure regulator comprises a housing 1 of which a first part 11 contains a double valve 12 having a double closure member 14, an output valve seat 13 whose position in the housing is adjustable, an input valve seat 16 connected to two members 17, 18 responsive in use to brake cylinder pressure and to pressure regulated by the vehicle driver. Such pressures acting to move the seat 16 in opposite directions the member 17 being a piston having a constant effective pressure responsive surface area and the member 18 being an annular diaphragm whose effective pressure responsive surface area is variable and whose inner edge 19 is clamped to the piston and whose outer edge 20 is clamped in the housing of which a second part 26 guides a hollow stem 15 of the valve seat 13 and of which a third part is either of two interchangeable housing parts 32, 43 one 32 of which contains mechanically operable means 34 for engaging the hollow stem 15 of the output valve seat 13 for adjusting, in use, the position of the output valve seat in dependence on vehicle load and the other 43 of which, Fig. 2, contains pressure responsive means 36 for engaging stem 15 to perform a like function. Depending on the loading of the vehicle axle 35 either the lever 34 or the piston 36 is moved to change the position of stem 15 and if braking is then effected pressure medium from brake valve 3 passes into piston 17 by way of open valve 14, 16 and line 7 to the brake cylinder 6. After a certain increase in pressure in the cylinder 6 the back pressure acting on diaphragm 18 causes an upward thrust on piston 17 and closes valve 14, 16 and if the pressure from valve 3 is further increased the prevailing ratio of surface area of piston 17 to effective surface area of the diaphragm 18 is the determining factor for braking pressure applied to cylinder 6. However if the pressure is decreased piston 17 and diaphragm 18 move upwards, member 14 is raised from seat 13 and the output valve 13, 14 is opened to allow exhaustion to atmosphere via the hollow stem 15 and a non-return valve 9. The effective surface area of diaphragm 18 is varied, by means of an arrangement 24 composed of radial fingers and grooves, in dependence on the actual position of the valve seat 13.