baber/WOPTO huggingface dataset:
Patent GB-897218-A (GB)
Title: A process of producing foamed carbamide resins of low specific weight
IPC: C08J9/30
Filed: 1958-06-03
Abstract: Low density foamed carbamide resin is produced by foaming an aqueous resinous product obtained by partially condensing in an alkaline medium, urea, formaldehyde, and a basic substance consisting of ammonia, triethanolamine or melamine in quantities of 0,002 to 0,2 moles of said basic substance per mole of urea, and then completing the condensation at a pH in the acid range.  Preferred amounts, per mole of urea, are 0,02 to 0,2 moles of ammonia, 0,005 to 0,1 moles of triethanolamine and 0,002 to 0,05 moles of melamine.  Suitable foaming agents include salts or esters of sulphonic acids, e.g. alkyl sulphonates, the carbamide resin solution being mixed into a stiff foam obtained by blowing air into a sulphuric acid solution of the sulphonate, the foamed mix being then cast into moulds to harden at room temperature; fillers, e.g. wood flour, asbestos, cement, may be added to the foamed resin beforehand.ALSO:Low-density foamed carbamide resin is produced by foaming an aqueous resinous product obtained by partially condensing in an alkaline medium, urea, formaldehyde, and a basic substance consisting of ammonia, triethanolamine or melamine in quantities of 0,002 to 0,2 moles of said basic substance per mole of urea, and then completing the condensation at a pH in the acid range.  Preferred amounts, per mole of urea are 0,02 and 00,2 moles of ammonia, 0,005 to 0,1 mole triethanolamine and 0,002 to 0,05 moles of melamine.  Suitable foaming agents include salts or esters of sulphonic acids, e.g. alkylsulphonates the carbamide resin solution being mixed into a stiff foam obtained by blowing air into a solution of the sulphonate in sulphuric acid, the foam mixture being then cast in moulds to harden at room temperature.  Fillers, e.g. wood-flour, asbestos, cement may be admixed into the foamed resin beforehand.
Patent GB-692461-A (GB)
Title: Improvements in or relating to circuit arrangements for converting amplitude modulated pulses into pulsating d.c. voltage
IPC: H03K9/02
Filed: 1951-07-26
Abstract: 692,461. Pulse modulation circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 26, 1951 [July 26, 1950], No. 17766/51. Class 40 (v). A train of amplitudemodulated pulses (a), Fig. 2, is converted into a stepped D.C. wave (c), Fig. 4, by applying the modulated pulses to a polarity-inverting valve 1, Fig. 1, and by using both the input and output pulses to control the voltage on a condenser 3 from which the stepped D.C. wave is derived. In Fig. 1, the input pulses of negative sign, shown as produced by a generator 9 of low internal resistance Ri, are applied to the grid of the valve 1, and positive pulses are taken from the anode through a condenser 4. Three rectifiers 2, 5, 7 all conducting in the same direction, are connected in series between input terminal a, live terminal c of condenser 3, anode terminal b, and negative terminal of a bias source 6. When no pulses are present, the point a is at earth potential, and the point b at the negative potential V6 of the source 6. A negative input pulse (a), Fig. 2, gives rise to a positive-going pulse (b) at the point b which rises in voltage until it is slightly less negative than a, whereupon current passes through the rectifiers 5, 2 and the voltage at b ceases to rise. The voltage at c on the condenser 3 rapidly assumes a corresponding value. At the end of a pulse, a returns to earth potential and the voltage at b becomes more negative until limited to the value V6 by the rectifier 7. For the interval between pulses, the voltage at c remains steady owing to the high impedance offered by the rectifiers 2, 5 to a discharge current, with the result that the voltage at c follows the stepped form of Fig. 4.
Patent GB-976026-A (GB)
Title: Improvements in ventilating apparatus for water closets
IPC: E03D9/052
Filed: 1963-05-06
Abstract: 976,026. Ventilating closets. B. C. WILLIAMS. May 6, 1963 [May 16, 1962], No. 17797/63. Heading E1C. An odour control sanitary ventilation system includes a suction fan 7 to withdraw air from a water-closet pan by means of the flush pipe 10 of the pan through a cistern overflow pipe 9, having an outlet vent 8, and operable to ventilate the pan during non-flushing periods. The fan 7 may operate continuously or intermittently through a switch actuable by pressure applied to the pan seat or by flow of water in the flush pipe 10. The fan 7 communicates with the space in the cistern 5 above the normal water level and is driven by a low power electric motor.
Patent GB-384588-A (GB)
Title: Improvements in or relating to machines with crescent-shaped working space
IPC: F04C2/32
Filed: 1932-06-23
Abstract: 384,588. Rotary engines. HEINRICH, H., 65, Eduard Pfeifferstrasse, Stuttgart, Germany. June 23, 1932, No. 17801. Convention date, June 24, 1931. [Class 110 (ii).] A piston g which is secured by bolts to a. disc f freely supported on an eccentric portion d of a shaft r, gyrates about a fixed cylinder e and forms a crescent-shaped working chamber h with inlet and outlet ports s, t. A relatively sliding-rocking abutment i is secured to the cylinder e and bears on two segments k. The parts e, g, b, f are all accurately finished before assembly to secure close fits of working parts. Centring rings q, p are provided between the cylinders and the piston-supporting discs b, f, and additional rings may be inserted in grooves m, n. A link l, pivoted to the casing, is pivoted at the other end to an extension of the piston g, but this link may be dispensed with.
Patent GB-145635-A (GB)
Title: Arresting device for single-thread braiding machines
IPC: D04C3/38
Filed: 1920-06-30
Abstract: 145,635. Schulte, O. Feb. 1, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Braiding-machines.-For the purpose of arresting and re-inserting bobbins at the crossing- places, the stems t' are driven by means of arms o which are slidable within the driver disks n and can be disengaged from the bobbins under control of the pattern gear. The driving-nibs o<1> are offset so that adjacent driving-arms clear one another in passing. The arms o carry lower rollers s which engage lever arms e, c' pivoted at g. when raised by the pattern gear i and thue withdraw the driving nibs o<1> against the action of springs p, as shown in Fig. 7, until the corresponding bobbins are no longer carried round and are left behind with their stems resting against the curved recesses f of the levers e, e<1>.
Patent GB-1502203-A (GB)
Title: Flag-laying tools
IPC: E01C19/52
Filed: 1976-05-03
Abstract: 1502203 Flag-stone laying tool N NIELSEN 3 May 1976 [2 May 1975] 17915/76 Heading B8H A flag-stone laying tool comprises a frame 16 mounted on wheels 8, a flag-stone lowering arm 7 pivotably mounted on the frame, a lower claw 9 rigid with the arm 7 and an upper claw 19 pivotally mounted on the arm 7 and rigidly connected to a link 5 pivotally connected to a piston 14 of an hydraulic ram 4. The ram is pivotally mounted at 24 to the frame and is connected via a conduit 11 with a control valve 3 to an accumulator 6 with a pressure control valve 1. In use the tool is advanced to position the claw 9 beneath a flag-stone F and to loosely engage the claw 19 with the flag-stone. The tool is then pivoted backwards whereby the claws grip the flag-stone which may then be transported to the area of flagging. The valve 3 is then opened allowing the arm 7 and the flagstone to pivot to a horizontal position against the pressure in the accumulator. Once the flagstone is released the pressure in the accumulator returns the arm to the vertical position shown.
Patent GB-854443-A (GB)
Title: New phosphorus-containing ethylene-imine derivatives and process for their manufacture
Inventor: DIERY HELMUT
IPC: B28C9/00
Filed: 1957-06-05
Abstract: The invention comprises ethyleneimine derivatives of the formula : <FORM:0854443/IV(b)/1> in which R is an alkyl, cycloalkyl or aryl group.  They may be obtained by reacting an appropriate thiophosphoric monoester dihalide, e.g. chloride or bromide with ethyleneimine in the presence of an acid-binding agent.  Specified acid binding agents are tertiary amines, e.g. trimethylamine or triethylamine, anhydrous ammonia, sodium carbonate, potassium carbonate, sodium acetate, and sodium hydroxide.  The reaction may be carried out in an aqueous medium or in an organic solvent, e.g. a hydrocarbon, chlorinated hydrocarbon, ketone or ether.  Examples are given for the production of products of the above formula in which R is ethyl, butyl, cyclohexyl, isobutyl, n-amyl, and phenyl respectively.  The products have the property of checking the growth of malignant tumours.
Patent GB-1026242-A (GB)
Title: Light metal bar for warp knitting machines
IPC: D04B27/06
Filed: 1964-04-30
Abstract: 1,026,242. Knitting machines. MAYER TEXTILMASCHINENFABRIK G.m.b.H. April 30, 1964 [June 14, 1963], No. 17994/64. Heading D1C. A light metal bar 4 for a warp knitting machine is characterized in that it is connected at least at one side with a band or strip or with one or more rods of steel as at 7. The steel strip may be riveted bolted or adhered to the bar and may extend beyond the ends of the bar as in Fig. 2 so that a screw 9 in a member 8 can be tightened to secure the bar relative to the strip. In a further embodiment the bar may be hollow with the steel rods or wires extending through the longitudinal bore thereof.
Patent GB-389844-A (GB)
Title: Method of producing two colour or multicolour photographic pictures
IPC: G03C7/04
Filed: 1931-06-22
Abstract: 389,844. Colour photography. DœRKOPPWERKE AKT. - GES., 2, Nikolaus D³rkopp Strasse, Bielefeld, Germany. June 22, 1931, No. 18034. Convention date, June 1. [Class 98 (ii).] Colour photographs on screen plates or films having no dark interspaces are printed on a sensitized paper having a colour screen interspersed with white areas, the patterns of the two screens not being in register during printing. In preparing the sensitive paper a layer of sensitized gelatine is applied to the surface, exposed under a line screen to produce hardened uncoloured areas, resensitized and coloured with one colour, e.g. red, exposed under the line screen, the red colour washed out from the unhardened parts and these parts coloured green. Finally the screen is washed successively in potassium permanganate and potassium meta-bisulphite, dried, varnished and a panchromatic emulsion coated thereon. The paper is exposed from the rear alternately with red and green light. The lines of the screen on the negative should be inclined to those of the paper to avoid moire effects. A threecolour paper may be prepared by introducing an additional step of resensitizing, exposing and washing, the layer being coloured blue at the second colouring and the blue colour in the unhardened areas being wholly or partially washed out and these areas coloured with green dye or with a yellow dye to produce green by combination with the blue.
Patent GB-924090-A (GB)
Title: Improvements relating to artificial textile fibres
IPC: D01D5/253
Filed: 1960-05-23
Abstract: Trilobal textile fibres of a synthetic organic polymer or a regenerated or modified natural organic polymer have a cross-section which has the general shape of an equilateral triangle, the sides of which are convex and have at least their central portions arcuate, and the angles or tip portions of which are arcuate and symmetrical about a straight line passing through the centre of the triangle and the centre of the tip, the extreme outer portions of the three tips defining a circumscribed circle having its centre equidistant from the tips, and the innermost point in each of the sides of the triangle falling on an inscribed circle, the centre of which is equidistant from these sides, the cross-section <PICT:0924090/IV(a)/1> <PICT:0924090/IV(a)/2> having a tip radius ratio r1/R and an arm angle A within the range represented by the cross-hatched area in Fig. 3, and a modification ratio M within the range represented by the cross-hatched area on Fig. 4.  As shown in Figs. 1 and 2, r1 is the radius of the tips of the triangular cross-section of the fibre, R is the radius of a circle a circumscribed about the tips b and having a centre c; A is the arm angle formed by extending a line tangential to both the convex side d and the arc generated by p  the tip radius r1; M is the ratio of the radius R of the circumscribed circle to the radius R1 of a circle inscribed within the cross-section.  In all the filaments of the invention, A is over 60 degrees, usually 70-150 degrees, M is 1,1-1,63, and r1/R is 0-0,71.  The filaments exhibit maximum lustre when A is about 110 degrees, r1/R is about 0,3, and M is about 1,28. The fibres are made by extruding a spinning melt or solution through a spinneret having triangular orifices with sides which are straight or convex with respect to the axes, and correlating the spinning conditions, the shape of the orifices and the spinning melt or solution to give fibres of the specified cross-section.  The spinneret orifices may be as shown in Fig. 5, in which R1 is the radius of curvature of the sides of the orifice, R2 is the distance between the centres of circles circumscribed about the tips and R3 is the radius of such circles.  Examples are given of the melt-spining of polyethylene terephthalate filaments having the specified triangular cross-section.  A long list is given of other synthetic polymers which may be used.  The filaments have a marked lustre combined with resistance to wrinkling and soiling and are <PICT:0924090/IV(a)/3> <PICT:0924090/IV(a)/4> <PICT:0924090/IV(a)/5> particularly useful in bulked form.  Specifications 847,147, 869,301, 905,895 and 924,087 are referred to.
Patent GB-992041-A (GB)
Title: Improvements in control means for hydraulic pressure actuated mine roof supports
Inventor: HISTON ROBERT
IPC: E21F13/08
Filed: 1962-05-11
Abstract: 992,041. Hydraulic apparatus. A. G. WILD & CO. Ltd. Aug. 8, 1963 [May 11, 1962], No. 18225/62. Heading F1P. In a mine roof support advance device comprising an hydraulic roof-supporting jack cylinder 24 connected by its sole plate 13 to one end of a double acting ram 10 having its other end connected to a conveyer 14 and which is controlled by a main valve 49, the latter in addition to having conventional "push", "pull" and "neutral" positions has a "fill" position wherin fluid is supplied through a port 41 to the "push" chamber 16 of the ram whilst the pull chamber 21 is closed and the roof support jack is controlled by a valve having a single inlet and exhaust port 36 connected by a duct 40 to "push" chamber 16 and controlled by a member 28 actuated by a servo-piston 35 in a cylinder 33 connected by a duct 42 to the pull chamber 21 whereby when the main valve 49 is in the "fill" position pressure in chamber 21 and cylinder 33 lifts piston 35 to open valve member 28 and allow pressure fluid from valve 49 to pass into the roof support cylinder 24 and when valve 49 is in the "pull" position the pressure in the "pull" chamber 21 again lifts piston 35 to open valve 28 to release pressure from cylinder 24 prior to advance of the roof support. Excess pressure in cylinder 24 is transmitted through a bore 38 in the valve stem 29 to below valve piston 34 to lift the same and allow fluid to pass to "push" chamber 16 which is connected to exhaust when valve 49 is in "neutral", Servo-piston 35 may be locked by a cam 45 or by closing a valve 46 in exhaust duct 47 thereby allowing the conveyer to be pulled back from the coal face without releasing the roof support. In a modification the ram cylinder is connected to the conveyer and the piston rod which is hollow is connected to the sole plate. Specification 980,581 is referred to.
Patent GB-851856-A (GB)
Title: Improvements in or relating to the mounting of wire-like or wired components particularly for automatic production
Inventor: RANGABE ALEXANDER RIZO
IPC: H05K13/00
Filed: 1956-06-13
Abstract: 851,856. Endless conveyers. PLESSEY CO. Ltd. June 13, 1957 [June 13, 1956], No. 18297/56. Class 78 (1). [Also in Group XVII] A method of transporting or storing articles such as wired electrical components comprises placing them in pockets in a continuous strip made by joining two webs at spaced intervals. The articles fit loosely in the pockets and are held in position by tension in the strip. When it is desired to release them the strip may be compressed longitudinally to fully open the pockets. Loaded strips may be stored in reels or folded in zig-zag formation. In one embodiment articles g are gripped by their ends k by upper and lower strips a, b. The strips are advanced by driven rollers c and then pass between braked rollers d causing the pockets to open to receive the articles. Driven rollers e tension the strips to grip the articles, which may subsequently be released by passing the strips through braked rollers f. In another embodiment where the bodies of the articles are held in the pockets, the pockets are opened by pairs of jaws m, n which advance at right angles to the strip to grip it between the pockets, whereupon one set of jaws n moves longitudinally towards the other m.
Patent GB-458782-A (GB)
Title: Improvements in and relating to the manufacture of soap
IPC: C11D13/04
Filed: 1935-06-26
Abstract: <PICT:0458782/III/1> Soap is made by forcing oil and alkali under a succession of pressure impulses through separate heated conduits 1<b> and 2<b> and opposing or intersecting nozzles 1<b>, 2<c> into a mixing chamber 3, and then through breaking up or emulsifying means, e.g. plates 6, 9 having orifices 7 which preferably are conical and progressively diminish from 1,0 to 0,1 mm. diameter.  Suitably, palm-kernel oil at 100 DEG  C. is drawn from a feed tank to a sixcylinder pump and forced through the pipe 1<b> heated by serving as an electric resistance; an equivalent proportion of caustic soda of 100 DEG  B<\>ae. and at 80 DEG  C., with or without 0,1 per cent of sodium stearate or other soap-forming catalyst, is likewise fed by a second pump through the pipe 2<b> similarly heated, the 2 pumps being synchronized and preferably driven by the same motor, e.g. at 1000 r.p.m. to impart 2000 impulses per min. to the oil and soda. The soap is forced out through a pressure-regulating valve 21 into a cooling chamber, as spray to produce flakes or through conduits to produce bars.  A hot-water circulating system may be provided to warm up the whole apparatus initially.
Patent GB-857476-A (GB)
Title: Automatic heading control for aircraft
IPC: G05D1/06
Filed: 1958-06-09
Abstract: 857,476. Automatic aircraft control systems. LEAR Inc. June 9, 1958 [June 28, 1957], No. 18313/58. Class 38 (4). In a'first position of a switch in an aircraft automatic pilot a servo-operated control surface is controlled by signals from a directional gyro; in a second position of the switch the control is by signals from a radio beam receiver, signals from an integrator of signals from the radio receiver, and signals representing the difference between the beam heading and a heading defined by the directional gyro ; and in a third position of the switch the control surface is uncontrolled and the integrator acts to reduce its own input to zero. When ganged switches are in position A, as shown, signals from a localizer or omni-range radio receiver 12 on an aircraft are applied through amplifiers 14 and 20 and co-operate with signals from a roll gyro 21 to control servo-operated ailerons (not shown) and thereby maintain the aircraft automatically on a radio beam. A selsyn 16 receiving electrical signals from a directional gyro 18 is adjusted in a manner not shown in accordance with the heading of the beam selected, and produces signals, dependent on the difference between the beam heading and the actual heading, which are applied to amplifier 20 to maintain the desired heading. The effect of cross-winds is eliminated by applying signals from amplifier 14 through a potentiometer 32 and an amplifier 38 to energize a two-phase motor 52, which by virtue of feedback from a tachometer generator 36 acts as an integrator and eliminates persistent beam error signals by adjusting a selsyn 62 applying signals from directional gyro 18 to amplifier 20 through a resistance-capacity network 40. If the ganged switches are moved to position C only the signals from directional gyro 18 are applied to amplifier 20 and the aircraft is maintained automatically on a gyro-defined heading. At an intermediate position B of ganged switches between position A and position C, motor 52 is energized through amplifier 38 by any signals which are stored in network 40 at the instant of changeover. Motor 52 then operates to reduce these signals to zero, gearing 48 being set to transmit high speed under these conditions. Sufficient dwell of the ganged switches at position B to permit this to be effected may be obtained by manual or automatic control of the switches.
Patent GB-459272-A (GB)
Title: Reproducing apparatus for picture telegraph systems
IPC: H01H50/16
Filed: 1936-07-03
Abstract: 459,272. Copying telegraphy. LORENZ AKT.-GES., C., 1, Lorenzweg, Tempelhof, Berlin. July 3, 1936, No. 18526. Convention date, July 5, 1935. [Class 40 (iii)] A recording style or the like B is mounted on an armature A, which is rigidly secured to a bar S which is subjected to torsional stress when the armature is attracted by a magnetic system M. The bar has flat ends a and a flat centre b, to which the recording- lever B is fixed, and reduced portions c of circular cross-section between the centre and the ends are subjected to torsional stress on movement of the armature.
Patent GB-242001-A (GB)
Title: Improvements in apparatus for heating by oil
IPC: F23D5/00
Filed: 1924-08-05
Abstract: 242,001. Rose, G., Malcolm, G., Mackinnon, P. G., and Abell, Sir W. S. Aug. 5, 1924. Open tray burners; burners, adjusting.-Fuels of high flash-point are burnt in a chamber 3 and the combustion gases pass through a refractory partition 2 to a chamber 4 in which the heat of combustion is utilized. The partition 2 is of considerable mass and of such a thickness as to accommodate in its lower face a hemispherical or other deep recess 5 having radial, tangential, or spiral passages 6 leading to the chamber 4. The chamber 4 may be lined with firebricks. The passages 6 may be irregularly spaced and be of different areas at the two ends. Means mav be provided for wholly or partially closing some of the passages. The fuel is burnt in an open tray 7 which may be provided with asbestos or other wicks 8 and be ridged to prevent a uniform oil depth. The tray may be adjusted vertically in. relation to the partition 2 by means of washers. 9 or a device such as a toggle linkage 10. The adjusting device may be operated either by hand or by a thermostat or other automatic device. The tray 7 communicates by a pipe 12 with a receptacle 13 to which a suitably regulated supply of fuel is delivered. The Provisional Specification states that the recess 5 may be conical.