baber/WOPTO huggingface dataset:
Patent GB-658680-A (GB)
Title: Improvements in folding chairs or the like
IPC: A47C4/16
Filed: 1949-02-28
Abstract: 658,680. Seats &c. HELLER, M. Feb. 28, 1949, No. 5343. [Class 52 (ii)] In folding chairs, back rests &c. in which the frames have spring surfaces consisting of tensile elements one or both ends of each of the frames is of open construction without a rigid cross member the members of the frame being spaced by pivoted leg supports or strut frames which include a rigid cross member ensuring that one or both open ends consist of spring edges. Fig. 1 shows a back-rest in which the back member is provided with a spring edge d the support comprising a pivoted strut b having a rigid cross member c disposed close to the pivots. Fig. 2 shows a deckchair having spring surfaces the top edge of the back being a sprung edge with a strut frame b having a rigid cross member c.
Patent GB-909687-A (GB)
Title: Benzothiadiazine derivatives
IPC: C07D285/30
Filed: 1959-02-17
Abstract: The invention comprises 3:6-disubstituted-7 - sulphanoylbenzo - 1:1 - dioxo - 1 - thia -2:4-diazine derivatives of the formula <FORM:0909687/IV (b)/1> and acid addition and base salts thereof, wherein A is hydrogen Cl, F, Br, NO2, CF3 or C1-3 alkyl or alkoxy, n is 1, 2 or 3 and M is a thioether, sulphoxide or sulphone group, preferably of the formula -Y-R, wherein Y is S, SO or SO2 and R is C1-12 alkyl or alkenyl, C4-6 cycloalkyl, naphthyl, a group R3.C6H4-or R3.C6H4.(CH2)k wherein k is 0-4 and R3 is hydrogen, amino, lower alkylamino, nitro, fluoro, chloro, bromo, lower alkyl, or lower alkoxy, a group Z-(CH2)qwherein q is zero or an integer from 1-3 and Z is thienyl, thiazolyl, pyrimidyl, pyridyl, furyl, imidazolyl or benzimidazolyl, a group <FORM:0909687/IV (b)/2> wherein r is zero or an integer from 1 to 5 and R2 is hydrogen, lower alkyl, phenyl or an aralkyl group of 7-10 carbon atoms, a group -(CH2)m.COOH wherein m is 1-5 or a group -(CH2)p.CO.X wherein p is zero or an integer from 1 to 5 and X is -NH2, -NHR1, -NHNH2, -NH.NHR1 or OR1 wherein R1 is lower alkyl, phenyl or an aralkyl group of 7-10 carbon atoms; with the proviso that when A is CH3, F, Cl, Br or CF3 and n is 1, M is not a benzylmercapto or allylmercapto group.  The compounds are prepared by (a) reacting a corresponding 3-haloalkyl-benzothiadiazinedioxide (M = halogen) with a mercaptan, (b) haloacylating a 5-substituted-2:4-disulphamoyl-aniline and condensing the resulting 5-substituted - 2:4 - disulphamoyl-N-haloacyl-aniline with a mercaptan, (c) dehydrating a 5-substituted - 2:4 - disulphamoyl - N - acyl - aniline wherein the acyl group has the formula M-(CH2)n-CO-, (d) acylating a 2:4-disulphamoyl aniline with a mercapto acid derivative, followed by ring closure or (e) acylating an aniline-bis-sulphonyl chloride, treating with ammonia and subjecting the resulting disulphamoyl-acylanilide to ring closure.  Products wherein M is a sulphone or sulphoxide group may be obtained by oxidising the corresponding thioethers.  Pharmaceutical preparations having diuretic activity comprise the above compounds in combination with pharmaceutical carriers.  The preparations may suitably take the form of tablets, capsules, troches, lozenges or solutions for oral administration or sterile solutions in isotonic saline or glucose for parenteral administration.  The active compounds may suitably be used in the form of their salts with pharmacologically acceptable anions such as iodide, chloride, sulphate, bromide, methyl-sulphate, acetate, propionate, citrate, tartrate and gluconate or cations such as sodium, potassium, calcium and magnesium.  Specifications 909,688 and 909,689 are referred to.
Patent GB-673231-A (GB)
Title: An improved ring balance for the measurement of differential pressure
IPC: G01L7/24
Filed: 1950-03-03
Abstract: 673,231. Pressure gauges. LANDIS & GYR AKT.-GES. March 3, 1950 [March 5, 1949], No. 5478/50. Class 106(ii). A ring balance for the measurement of differential pressure has an enlargement at one side only of the tubular ring, said enlargement, when the balance is unloaded, lying at the level of the obturating liquid in the tubular ring. By " enlargement" is meant that the tubular ring is effectively widened or enlarged in the plane of the surface of the obturating liquid. The tubular ring 1 has a tubular extension 2 at the one side of its pivot 6 and situated at the level of the mercury 14 when the balance-ring is unloaded. The pointer is carried by a member 3 which extends towards the centre and ends in a bearing cup 5. Counterweights 10, 11 are placed diametrically opposite the extension 2 and the member 3 respectively. The counterweight 11 being adjacent the usual controlling counterweight 12.
Patent GB-690007-A (GB)
Title: Method and means for manufacturing pipe elbows or bending metal tubes
Inventor: ROWAN HAROLD CHARLES
IPC: B21D7/06
Filed: 1951-03-08
Abstract: 690,007. Making tubular elbows &c. WELLINGTON TUBE WORKS, Ltd. Jan. 22, 1952 [March 8, 1961], No. 5606/51. Classes 83 (ii) and 83 (iv). Angular bending.-Elbows &c. are made by bending a tube f supported on grooved formers a by a reciprocated grooved former g. The formers a are pivotally mounted on levers c hinged to a frame b to facilitate release of the bent tube and are provided with recesses e to prevent extension of the metal on the outside of the bend. To avoid the formation of end lips on the unsupported inside of the bend, the tube end may be shaped before bending. Mandrels i may be used.
Patent GB-820697-A (GB)
Title: Improvements in or relating to odour absorption
IPC: F24F6/04
Filed: 1958-02-20
Abstract: 820,697. Deodorizing air. CARRIER ENGINEERING CO. Ltd. Feb. 20, 1958 [March 28, 1957], No. 5618/58. Class 137 A method of deodorizing and filtering air comprises passing the air in contact with an odour absorbing medium consisting of diethylene or triethylene glycol, removing the medium from contact with air, purging the medium of the absorbed odours and recycling the purged medium As shown, an endless mesh belt 11 mounted on rollers 12,13, the latter being driven, dips into a container 10 for medium and air is drawn by a fan 16 through the mesh where it is deodorized and filtered. A heating coil 18 surrounding a pipe 17 connected to the container 10 acts as a heat pump to lift the contaminated medium to a chamber 19 where the odours are released and discharged, the clean medium being returned to the container through a pipe 23. In a modification, Fig. 3 (not shown), the medium is pumped to the top of a screen of mesh or expanded metal over which it flows while air is drawn through the screen. The medium may also contain water to humidify the air.
Patent GB-984553-A (GB)
Title: Transistor sawtooth voltage generator
Inventor: BALDWIN JOHN LEWIS EDWIN
IPC: H03K4/50
Filed: 1963-02-12
Abstract: 984,553. Transistor sawtooth-generating circuits. RANK-BUSH MURPHY Ltd. Feb. 12, 1964 [Feb. 12, 1963], No. 5663/63. Heading H3T. In a sawtooth generator in which during the sweep periods capacitor 1 is charged from constant-current transistor 2 and during the flyback periods is discharged by pulses applied to the base of transistor 7, capacitor 10 is charged to the peak value of the sawtooth wave appearing across capacitor 1 through the emitter-base diode of transistor 9 serving as a peak rectifier so that any tendency for the sawtooth amplitude to increase, due for example to a reduction in the frequency of triggering pulses applied to terminal 8 results in an increased voltage across capacitor 10, a reduced voltage across resistor 6 and hence a reduced value of constant current flowing in transistor 2 so that the amplitude of the sawtooth generated is maintained at a substantially constant value. The amplitude is similarly independent of increases in frequency tending to cause a reduction in amplitude.
Patent GB-765408-A (GB)
Title: Emulsion paints
IPC: C09D109/10
Filed: 1955-02-25
Abstract: Emulsion paints comprise (1) an aqueous protein solution, and (2) a disperse phase comprising a liquid butadiene-1,3 polymer. Pigments, e.g. lithopone, titanium dioxide, cadmium sulphide and sulphoselenide, iron oxide and ultramarine, and inert fillers may be dispersed in the protein solution together with an amine-fatty acid soap, to which is added the polymer, paint driers, e.g. cobalt, manganese or lead naphthenates, and a fatty acid, e.g. oleic, linoleic, stearic or palmitic.  The protein, e.g. casein or the alpha protein from soybeans, may be solubilized by borax, soluble phosphates or silicates, alkali or ammonium hydroxides, sodium stannate or preferably amines, e.g. triethanolamine.  The butadiene polymer or copolymer with styrene or isoprene, 2,3-dimethyl butadiene-1,3, piperylene, 2-methyl pentadiene-1,3 or methyl, dimethyl, ethyl or diethyl styrenes may be prepared by polymerization in an inert hydrocarbon diluent, e.g. naphtha, mineral spirits, butane, xylene, benzene, toluene or cyclohexane, in the presence of sodium, potassium, sodium hydride or a sodium alloy.  Ethereal codiluents, e.g. diethyl ether, di-isopropyl ether, dioxane, vinyl ethyl ether, vinyl isopropyl ether, vinyl isobutyl ether, anisole or phenetole, and modifying diluents, e.g. butene-2, may be added.  The comonomer is preferably added after the polymerization of the diene has commenced.  Aliphatic alcohols containing 1 to 5 carbon atoms are added as promoters, and when the polymerization is complete the catalyst is removed by adding excess alcohol, filtering and fractionally distilling the alcohol-hydrocarbon and ether-hydrocarbon azeotropes and excess diluent to leave a clear varnish to which resins, e.g. alkyd or phenolic resins, may be added.
Patent GB-600849-A (GB)
Title: Improvements in mining machines
IPC: E21C37/08
Filed: 1944-11-21
Abstract: 600,849. Mining-machines. HAIR, C. E. Nov. 21, 1944, No. 5729/47. Convention date, April 1. Divided out of 600,819. [Class 68 (i)] In hydraulic jacks used in mining for breaking down seams, a pressure pad E is so connected to pistons 7 that it may take up a non- perpendicular position with respect to the pistons. In a single piston unit A, at the end of the piston 7 there is secured by a stud 14 a block D having an upper arcuate face d which is cut away and shouldered as at d<SP>1</SP> so that it slides in a corresponding recess in the underface e of the pad E. In a multi-jack unit B, the pad is provided with one or more openings 15, each loosely accommodating a portion of a head D<SP>1</SP> secured to a piston c. Specifications 575,038, 575,039, 575,040 and 600,819 are referred to.
Patent GB-657839-A (GB)
Title: Cellular steel floor construction
IPC: E04B5/48
Filed: 1949-03-02
Abstract: 657,839. Floors. ARNOLD, J. C. (Robertson Co., H. H.). March 2, 1949, No. 5773. [Classes 20(ii), 20(iv) and 87(i)] A floor comprises a number of multicellular units 10 erected side by side and end to end on a supporting framework, each unit comprising an upper metal sheet 12 which may be flat, as shown, or corrugated and lower corrugated metal sheets 14, 16 forming spaced and longitudinally extending cells 18 which form wiring ducts. Offset portions 34, 36, 40 of a depth equal to the thickness of the sheet are formed in the sides and top of the corrugations at the leading edge 26 of each lower sheet and the bases of the corrugations of these edges are cut as shown at 44 whereby the trailing edge 28 of one unit overlies the leading edge of the adjacent sheet, the arrangement providing smooth and flush interior cell surfaces at the joints to facilitate the drawing of the wires through the cells. The under surfaces at the joints are likewise flush to rest evenly on the supporting girders &c. The longitudinal edges of the units are provided with co-operating flanges 22, 24. As shown the upper sheet is somewhat shorter than the lower whereby access may be had to the ducts in the gap between the ends of the upper sheet; this gap is subsequently closed by a plane strip. Specifications 400,924 and 420,062, are referred to.
Patent GB-639778-A (GB)
Title: Improvements in and relating to the hydrogenation of butadiene
Inventor: MCNEIL DONALD
IPC: C07C5/03
Filed: 1947-02-28
Abstract: Butadiene in gas mixtures comprising C4 hydrocarbons is selectively hydrogenated by reaction with hydrogen at not more than 400 DEG  C. in the presence of a catalyst comprising nickel and zinc oxide, the molar ratio of hydrogen to butadiene being less than 2 : 1.  Mixtures obtained by cracking petroleum, and containing butanes, butenes and butadiene may be treated, preferably at 130-220 DEG  C.  The catalyst may be prepared by precipitating the mixed nickel and zinc carbonates or basic carbonates and heating to 400 DEG  C. to give the oxides. Supports such as kieselguhr, alumina and activated clays may be incorporated.  In an example, reduced nickel with 5-10 molar per cent of zinc oxide is used at various temperatures and space velocities.
Patent GB-1487522-A (GB)
Title: Fet circuits
IPC: H03K3/356
Filed: 1976-02-16
Abstract: 1487522 Transistor bi-stable circuits INTERNATIONAL BUSINESS MACHINES CORP 16 Feb 1976 [29 April 1975] 05939/76 Heading H3T In a latching driver circuit comprising a latching circuit connected to a push-pull driver circuit, and means for setting the latching circuit to the appropriate one or other of its latching states in accordance with input signals, the latching circuit comprises two cross-coupled inverter circuits each comprising a depletion mode field effect transistor D1, D2 acting as a load and connected in series with an enhancement mode field effect transistor E1, E2, the drains of the two depletion mode transistors being connected, in use, to a reference drain voltage V DD  and the sources of the two enhancement mode transistors being connected to a reference source voltage (earth), the four field effect transistors being of the same channel conductivity type, and the push-pull driver circuit comprises a depletion mode transistor D3 connected in series with an enhancement mode field effect transistor E3 across a source of output voltage, the two transistors of the driver circuit being of the same channel conductivity type, the gate of the driver depletion mode transistor being connected to the series connection NODE 1 between the transistors of one inverter circuit and the gate of the drive enhancement mode transistor being connected to the series connection NODE 2 between the transistors of the other inverter circuit. Where one node of the latch drives an output node a high switching speed may be retained without increasing the quiescent power dissipation by adjusting the dimension ratios of the transistors in the two arms of the bi-stable. This also gives independent adjustment of the rise and fall switching times.
Patent GB-910316-A (GB)
Title: Improvements in or relating to yohimbane compounds
Filed: 1959-02-20
Abstract: Yohimbine, alloyohimbine and corynanthine are isomerised by reaction with an alkali metal tertiary alcoholate in solution in an inert solvent, thereby effecting selective orientation of the C16 and C17 substituents and yielding respectively b -yohimbine, a -yohimbine and b -yohimbine.  The process may be carried out simultaneously with other reactions, e.g. oxidation, and an example details the simultaneous isomerisation and Oppenauer oxidation of corynanthine to yohimbinone. Specifications 887,664 and 887,665 are referred to.
Patent GB-771363-A (GB)
Title: Improvements in or relating to circuit-arrangements for regulating
IPC: G05B11/01
Filed: 1954-03-02
Abstract: 771,363. Electric control systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 2, 1954 [March 4, 1953], No. 6090/54. Class 40 (1). [Also in Groups XXXV and XXXVI] An arrangement for regulating a variable factor comprises an oscillation generator with two alternative oscillation frequencies having a feedback loop consisting of a bridge containing impedance sensitive to the factor, and having one pair of diagonal points connected to the output and the other pair to the input of the generator which is so arranged that one or other of the frequencies is generated according to the sense of unbalance of the bridge. In the embodiment shown in Fig. 4 for recording and regulating furnace temperature, the bridge comprises temperature sensitive resistor 1 in the furnace 14, the unbalance voltage being applied to the grids of amplifier valves 15, 16 with anode loads 18, 19 tuned to different frequencies and transformer coupled in reverse sense at 20, 21 to the input of valve 17, the output of which supplies the bridge. Consequently at the resonant frequency of circuit 18 the feedback through the bridge is positive for one sense of bridge unbalance while at the resonant frequency of load 19 positive feedback occurs only for the opposite sense of unbalance. According to the sense of unbalance oscillations occur in one or other amplifier and are rectified to give direct control voltages in leads 26, 27 which actuate relays causing the adjusting motor 6 to be driven in one or other direction to restore balance and to open or close the heating control valve of the furnace. Alternatively, the motor may operate continuously and the relays engage mechanical couplings to tapping point 5 to produce motion in the appropriate direction. In an alternative arrangement (Fig. 5) the bridge output is amplified in a three-stage amplifier 30, 31, 32 having the anode loads 18, 19 of the first two stages tuned to different frequencies and resistance capacitance coupling between the stages. The circuit constants are selected so that at a frequency approximating to the resonant frequency of anode load 18, the phase shift between input and output is zero, while at the second resonant frequency it is 180 degrees so that when the voltages across the bridge diagonals are in phase the amplifier oscillates at the first frequency and when the bridge is unbalanced in the opposite sense so that the diagonal voltages are in phase opposition it oscillates at the second frequency.
Patent GB-252287-A (GB)
Title: Anti-glare device for head lights on motor vehicles
IPC: F21V11/18
Filed: 1925-03-06
Abstract: 252,287. Pearson, J., and Pearson, T. March 6, 1925. Lantern screens.-In an anti-glare device for vehicle lamps comprising a multi-bladed fan mounted on a central pivot CD at the front of the lamp and adapted to be rotated by wind pressure, the blades A are tapered to a convenient length along the supporting wires G or otherwise arranged to extend radially inwards only such a distance as to leave a substantially unobstructed beam of light in the centre. The blades may be provided with covered or uncovered perforations, and the fan may be attached to the rim of the lamp by means of a wire spider. Alternatively, the central pivot may be mounted in a hole in the front glass E, the fan being on the outside or the inside, in which latter case the glass is provided with a number of ventilation holes.
Patent GB-593152-A (GB)
Title: Improvements in or relating to synthetic rubber of the butadiene-styrene type and a method of coagulating a dispersion thereof
IPC: C08C1/14
Filed: 1945-03-12
Abstract: An aqueous dispersion of a butadienestyrene copolymer containing a soluble soap as dispersing agent is treated with an aqueous solution of an aluminium salt, resulting in the coagulation of the synthetic rubber and in the uniform precipitation therein of the reaction product of the aluminium salt and the soap.  Suitable soaps are the sodium, potassium and ammonium salts of oleic, stearic, palmitic, lauric or other aliphatic monocarboxylic acids.  Specified aluminium salts are the sulphate and chloride and alums such as potassium aluminium sulphate.  The reaction product of the aluminium salt and the soap consists of a mixture of a basic aluminium salt of a fatty acid, fatty acid and aluminium hydroxide.  Polymerization of the copolymer is described, using a mercaptan and an oxidizing catalyst in aqueous emulsion.ALSO:An aqueous dispersion of a butadiene-styrene copolymer containing a soluble soap as dispersing agent is treated with an aqueous solution of an aluminium salt, resulting in the coagulation of the synthetic rubber and in the uniform precipitation therein of the reaction product of the aluminium salt and the soap. This reaction product which acts as a compounding ingredient consists of a mixture of a basic aluminium salt of a fatty acid, a fatty acid and aluminium hydroxide. Suitable soaps are the sodium, potassium and ammonium salts of oleic, stearic, palmitic, lauric or other aliphatic monocarboxylic acids.  Specified aluminium salts are the sulphate chloride and alums such as potassium aluminium sulphate.
Patent GB-873746-A (GB)
Title: Improved hitch mechanism for tractor-drawn implements
IPC: A01B59/042
Filed: 1958-02-25
Abstract: 873,746. Agricultural implements, seed sowers. MASSEY-FERGUSON Inc. Feb. 25, 1958 [Feb. 25, 1957], No.6166/58. Class 6(1). A hitch mechanism for an implement arranged to be connected to the power lift hitch linkage 14 of a tractor 12 and which has an earth working tool carrier 38 that can be raised and lowered relatively to the implement frame 31 between a working position and a transport position, comprises a hitch beam 34 rigid with the frame 31 and pivotally attached to the hitch linkage 24, an actuating member 32 pivotally connected to the beam 34 and to a control link 24 and co-operating with a linkage for moving the tool carrier 38 so that relative pivotal movement between the beam 34 and member 32 causes the tool carrier 38 to be raised or lowered. The tool carrier 38 is adjusted by means of a crank 88 pivoted to a linkage 48 connected to a bar 40 which operates the tool carrier 38 and to arms 74 pivoted on the member 32. The member 32 is formed with ends 95 which abut against a pin 76 to raise the tool carrier 38 as the linkage 14 is raised. In the working position as shown in Fig. 1, a parking stand 97 on the member 32 abuts against the beam 34.
Patent GB-1103262-A (GB)
Title: Improvements in or relating to devices for fixing a stick or rod in a socket in a broomhead
IPC: B25G3/10
Filed: 1965-02-12
Abstract: 1,103,262. Broom handle fixings. BROSSERIE FBANC-COMTOISE, and SOCIETE INDUSTRIELLE DE BROSSERIE VARIN. 12 Feb., 1965 [12 Feb., 1964], No. 6287/65. Heading B4K. A detachable socket for fixing a handle in the head of a broom comprises a sleeve 3 of moulded plastics material having a shoulder 6 for application against the upper part of the stock, the lower end of the sleeve being slotted and having an annular rim, the sleeve being so shaped or provided with means such that any tendency for the sleeve to rotate in the socket is minimized. As shown, the rim 8 is of elongated or oval shape in a plane perpendicular to the axis of the handle. In a modification, Figs. 5 and 6 (not shown), the sleeve is bevelled for easy engagement in the socket and has ribs formed to project externally between the shoulder and the rim. The socket has internal projections 14, 15 for holding the handle tightly therein.