baber/WOPTO huggingface dataset:
Patent GB-166769-A (GB)
Title: Improvements in or relating to subaqueous acoustic transmitters
IPC: G01S1/72
Filed: 1920-05-15
Abstract: 166,769. Hopwood, F. L. May 15, 1920. Subaqueous audible signals. - An underwater signal transmitter having directional properites comprises an adjustable diaphragm A, Fig. 1, vibrated by means of an electromagnet B. Both sides of the diaphragm are normally open to the water, or there may be an intervening medium which is acoustically transparent, and the device is then bi-directional. It may be rendered unidirectional by inserting an acoustically-opaque body, such as a baffle E of the kind described in S p e c ifications 139,542 and 151,920, or one or both sides of the diaphragm. In Fig. 1. the casing D, D<1> is acoustically transparent. In the form shown in Fig. 2, the electromagnet B acts directly upon an iron disc G, to which one or both of the diaphragms A, A<1> are connected, the arrangement forming in the latter case a double-diaphragm system. The degree of acoustic opacity of the chamber may be regulated by introducing various substances, such as jelly, water, &c. through plugs F'; but to ensure opacity it must not be completely filled. Baffles such as E, Fig. 1, may also be adjustably mounted outside one or both of the diaphragms A, A, in order to increase the directive effect of the transmitter.
Patent GB-134609-A (GB)
IPC: H02K23/42
Abstract: 134,609. Joel, H. F. Nov. 4, 1918. Pole-pieces; commutating - poles. - In dynamo - electric machines in which the pole-pieces C are so constructed that the air-gap between the pole-faces and the armature varies from a minimum at the centre of the pole-face to a maximum at the poletips d, the pole-face embraces an angle approximately equal to the pole-pitch. At one end of each pole-face, the air-gap may be reduced so that the pole-edge e may act as a commutating- pole; or separate commutating-poles may be provided.
Patent GB-385982-A (GB)
Title: Improvements in and relating to the measurement of alternating currents
IPC: G01R19/00
Filed: 1931-05-07
Abstract: 385,982. Current and pressure meters. COSENS, C. R. G., 13, Millington Road, and CAMBRIDGE INSTRUMENT CO., Ltd., Chesterton Road, both in Cambridge. May 7, 1931, No. 13513. [Class 37.] Apparatus for measuring an alternating - current voltage comprises a thermionic valve having a source to be measured connected between the grid and cathode, and an auxiliary source of the same frequency applied between the anode and cathode, the grid being biased so that the' apparatus absorbs no power from the circuit under 'test, and the continuous-current instrument 'in the anode circuit indicating the component of voltage in phase with the auxiliary voltage. A pair of thermionic valves A<1>, A<2> are connected to impedances R<1>, R<2> to form a bridge, the voltage to be measured being applied at C, and a further voltage being applied in opposite phase relationship to the anode coils B<1>, B<2>. Grid bias is obtained by resistances R<3>, R<4>, and the continuous current instrument D is provided with a condenser and choke to exclude any alternating current. The grid voltages may be applied in opposite phase, the anode voltages being in phase, and the apparatus may be made sensitive to all frequencies except one, or to one frequency. When a single valve is employed the second valve is replaced by a variable impedance, or a continuous current voltage and variable impedance may be employed to balance out any pulsating anode current flowing in the instrument before measurement is effected. Valves with separately heated cathodes, or with multiple arrangements of electrodes may be employed.
Patent GB-276440-A (GB)
Title: Method of moulding phenolic condensation products
IPC: B29B13/02
Filed: 1926-05-28
Abstract: 276,440. Heide, H. C., (Products Protection Corporation). May 28, 1926. Moulding resins.-Relates to the moulding of phenolic condensation products, e.g. a mixture of wood meal impregnated with phenol-aldehyde condensation product, and consists in heating the mass of the " A '' product throughout until it has attained a temperature slightly below the transition temperature to the " B " product before its introduction into the mould. Preferably the mass is first dried over calcium chloride and is them placed in an oven heated to a temperature slightly below 80‹ C. The preheated mixture is introduced into moulds heated to about 100‹ C. after which pressure is applied and the temperature raised to 130‹ C. After moulding, the article is removed while hot and allowed to cool slowly in an insulated receptacle of the fireless cooker type.
Patent GB-528425-A (GB)
Title: Improvements in thermionic valves
IPC: H01J19/00
Filed: 1939-05-06
Abstract: 528,425. Thermionic valves. MULLARD RADIO VALVE CO., Ltd. May 6, 1939, No. 13605. Convention date, May 9, 1938. Drawings to Specification. [Class 39 (i)] In a thermionic valve with the suppressor grid having a variable pitch and the control grid a constant pitch, the wider apertures in the suppressor grid are opposite that part of the electron path having large space charge. With a rectangular cathode the wider apertures are opposite the broader face.
Patent GB-304093-A (GB)
Title: Improvements in the ventilating of boots or shoes
IPC: A43B7/06
Filed: 1928-05-09
Abstract: 304,093. Padmore & Barnes, Ltd., and Davis, S. J. May 9, 1928. Ventilating.-Two sets of holes are provided in the upper, one set 11 in a row or rows extending across the toe cap near that edge which is attached to the vamp, and the other set 12 positioned at the waist. During walking, the air circulates backwards and forwards from one set of holes to the other. The holes 12 are reinforced by eyelets. Both sets of holes are covered on the inside by strips of silk gauze or like material.
Patent GB-951447-A (GB)
Title: Improvements in and relating to spray nozzles
Inventor: CROUCH DAVID WILLIAM
IPC: B05B11/04
Filed: 1960-04-19
Abstract: 951,447. Spray-producers. UNITED GLASS (THERMOPLASTICS) Ltd. Feb. 24, 1961 [April 19, 1960], No. 13640/60. Heading B2F. The body 1 of a spray nozzle has holes 3, 4 therethrough which, when the nozzle is fitted to a flexible liquid container, extend from the container interior to a groove 5 in a rotatably mounted cap 2 when the cap is in the position shown. A dip tube 6 extends into the hole 4 so that when the container is squeezed air flows through the hole 3 and groove 5 and draws liquid up the tube 6 and sprays it from an opening 7 in the cap. By turning the cap on the body the liquid container is sealed.
Patent GB-820989-A (GB)
Title: Improvements in or relating to the treatment of vapour-entrained dispersions of particulate solid materials
IPC: B02C19/06
Filed: 1957-04-30
Abstract: Incrustation in apparatus for the formation of vapour-entrained dispersions of particulate solid material wherein a slurry formed of the material in a liquid is passed through a heated coil in which the liquid is vaporized to form a dispersion of the particles in the vapour is prevented by the addition to the slurry of alkali metal carbonate or ammonium carbonate, the latter lowering the hardness of a filtrate of the flowable mixture below 15 parts per million, expressed as calcium carbonate.  The apparatus may be used in a process to effect grinding of the particles of, for example, talc or feldspar, the dispersion being passed through a zone of high velocity flow wherein it is subject to turbulence.  At least one alkali metal hydroxide may be mixed with the slurry and small quantities of other additives, for example sodium tripolyphosphate, may be used. Specification 683,318 is referred to.
Patent GB-930896-A (GB)
Title: Improvements in or relating to bobbin holders
IPC: D06B5/16
Filed: 1961-04-17
Abstract: <PICT:0930896/IV(a)/1> <PICT:0930896/IV(a)/2> A bobbin holder for liquid treatment of yarn comprises a spindle 1, a separate dyeing tube 3 and two separate conically constructed locators 4, 5 each being complementary to and serving to support a respective one of the tapered ends of a yarn bobbin of the bottle type.  The bobbin 6 to be treated is held between the two locators.  A screw cap 7 is screwed on to the upper end of spindle 1 and presses the separate parts 1, 3, 4 and 5 together thus determining their relative position.
Patent GB-893903-A (GB)
Title: System of compensating control performance of any automatic control system
IPC: G05B5/01
Filed: 1958-04-30
Abstract: 893,903. Automatic control systems. AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY, MINISTRY OF INTERNATIONAL TRADE & INDUSTRY. April 30, 1958 [July 2, 1957; July 25, 1957], No. 13815/58. Class 38 (4). In an automatic control system of the closedloop type the control signal is applied to a pair of magnetic amplifiers having different time delays and arranged in parallel paths to form a differentiator. In Fig. 4, an electric control signal in an automatic control system is applied at terminals 3 to the control windings of two magnetic amplifiers 21, 21a the rectified outputs of which are developed across resistors 20, 20a in series opposition. A resistor 4 is adjusted so that the resultant output at terminals 16 is normally zero but changes of input produce an output by virtue of the greater lag of magnetic amplifier 21a caused by extra turns on its control winding.
Patent GB-866858-A (GB)
Title: Improvements in apparatus for laying ground bait
IPC: A01K97/02
Filed: 1959-04-23
Abstract: 866,858. Laying ground bait for fish. FORD, W. J. Feb. 16, 1960 [April 23, 1959], No. 13820/59. Class 48. Apparatus for laying ground bait comprises a perforated container 1 having a hinged door 4 which is held closed, whilst the container is being lowered in the water, by a weight 9 suspended from an arm 7a attached to the door. When the weight reaches the bottom the door opens and the bait falls out. The container is supported by passing the fishing line through an eye 3 on the top of the container and pushing the hook 12 into a piece of cork 11 on the container.
Patent GB-870197-A (GB)
Title: Improvements in or relating to upholstery springs
Inventor: ROBINSON JOHN THOMAS
IPC: A47C27/06
Filed: 1958-05-01
Abstract: 870,197. Mattresses. BIRNAM PRODUCTS Ltd. April 15, 1959 [May 1, 1958], No. 13896/58. Class 52(4). A spring for the side wall reinforcement of a mattress coil spring unit comprising coil springs 3 interconnected by helical wire 4 has two substantially parallel lengths 1 incorporated in the upper and lower edges of the spring unit and spaced apart by inwardly facing V-shaped springs 2, the ends of the spring being joined by clips, ferrules, or butt welding. In a modification parallel lengths 1 are formed into a right angle or radius to conform to the contours of a corner of the unit.
Patent GB-1203878-A (GB)
Title: Mixer circuit
IPC: H03D7/18
Filed: 1968-03-22
Abstract: 1,203,878. Frequency changing. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 22 March, 1968 [25 March, 1967], No. 13970/68. Heading H3T. A circuit, Fig. 1, for mixing a signal S(F 1 ) with a lower frequency signal S(F 2 ) delivers an output signal only at those instants when the values of the two signals are equal and when, in addition, the time derivatives of the two inputs either have the same sign, or alternatively when they have opposite signs. The instants at which the derivatives have the same sign are shown to occur at a frequency of (F 1 -F 2 ), and the instants when they have opposite signs occur at a frequency of (F 1 +F 2 ). The signals S(F 1 ) and S(F 2 ) may be sawtooth waves, Fig. 2a, and are fed to a differential amplifier V comprising a long tailed pair of transistors, which provides antiphase outputs 3, 4 in the form of trains of pulses whose edges correspond to the instants when S(F 1 ) S(F 2 ), Fig. 2b 1  and 26 2 . These pulses are differentiated at D 1 , D 2  to give spike pulses, Fig. 2c 1  and 2c 2 , at 5, 6, the ones shown in solid lines cocurring at frequency (F 1  - F 2 ) and those in broken lines at frequency (F 1  + F 2 ). The lower frequency input S(F 2 ) is differentiated at D 3  to drive a flip-flop, FF, whose antiphase outputs control gates P 1 , P 2 , receiving the spike pulses at 5, 6. The gates pass only those pulses exceeding zero level, Fig. 2d 1  and 2d 2 , and their outputs are added at 7, 8, 9 to give a pulse train at frequency (F 1 -F 2 ). If the interconnections of the gates and the flipflop are interchanged, the broken line pulses are passed to give an output of frequency (F, + F 2 ). The input signals may be sine waves, and the output pulse train may be converted into a sine wave by using it to trigger a square wave generator (F, Fig. 3, not shown) which feeds a frequency doubler (T) connected to a bandpass filter (B). Alternatively, two circuits as in Fig. 1 are arranged in parallel (K 1 , K 2 , Fig. 4, not shown) with one input signal to one of them reversed in phase (P), their combined outputs triggering a square wave generator (F) feeding a band-pass filter (B).
Patent GB-231047-A (GB)
Title: Improvements in pistons
IPC: F02F3/02
Filed: 1924-06-10
Abstract: 231,047. Watts, W. T. June 10, 1924. Pistons. - Tongues 6, Fig. 2, are formed in the thrust faces of an aluminium &c. piston by means of axial slits 2 and circumferential slits 5. Alternatively the tongues may be of V- or semicircular form. The tongues are pressed outwards by a spring 9, of C or other form, below the gudgeon pin bosses. A scraper ring may be provided in a groove 10, the slits 2 permit'ting access of lubricant to the bearing surfaces. The tongues may be tapered, as shown in Fig. 5, and recesses 13 may be formed at the roots of the tongues.
Patent GB-661808-A (GB)
Title: Improvements relating to pulse code signalling systems
Inventor: VILLE JEAN ANDRE
IPC: H04B14/02
Filed: 1949-05-25
Abstract: 661,808. Cathode-ray tubes. SOC. ALSACIENNE DE CONSTRUCTIONS MECHANIQUES. May 25, 1949 [July 28, 1948], No. 14047/49. Class 39 (i). [Also in Group XL (c)] Cathode-ray tube coders and decoders for a pulse code modulation communication system (see Group XL (c)), comprise the normal electrodes, a collector electrode- and an apertured masking electrode associated therewith. In the coding tube, the masking electrode 6, Fig. 2, has apertures 8 across which the beam is deflected. In the decoding tube, the masking electrode 506, Fig. 6, has two rows of complementary apertures 508, the beam being deflecting along one or the other depending upon the potential on the horizontal deflecting electrodes. In a secrecy system the masking electrodes may each have two sets of apertures.
Patent GB-1406841-A (GB)
Title: Process for the production of polyvinyl chloride films for  adhesive tapes
IPC: C08L57/00
Filed: 1972-03-24
Abstract: 1406841 P.V.C. adhesive tapes W R GRACE & CO 23 March 1973 [24 March 1972] 14066/ 72 Heading B2E [Also in Division B5] Adhesive tape comprises a rigid (i.e. unplasticised) film base consisting of a mixture of P.V.C., and an impact modifier, e.g. M.B.S., or A.B.S. resin, chlorinated polyethylene, or acrylic resin, and is formed by extrusion or calendering, drawing to orient it longitudinally, applying adhesive and slitting. The mixture consists of 1 to 10% of the impact modifier and may also include heat stabilisers, lubricants, optical brighteners, and pigments and other colourings. In an example the mixture contains 1.7% of dibutyl tin mercaptide and 2.2% of lubricants. The draw ratio is 2:1 to 3:1 and the drawn film has a wt. of 50 to 60 gm/m<SP>2</SP>, a thickness of 35 to 45 microns, a tensile strength of 4.8 to 6.8 kg/cm longitudinally and 1.4 to 2.4 kg/cm transversely, and an elongation of 40 to 60% longitudinally and 100 to 180% transversely. The adhesive may be natural or synthetic rubber and a tackifier.
Patent GB-371180-A (GB)
Title: Improvements in curb attachments for bridles
IPC: B68B1/04
Filed: 1931-05-12
Abstract: 371,180. Bridles. DRURY, P. R., Red Gate, Boyce, Virginia, U.S.A. May 12, 1931, No. 14082. Convention date, Jan. 26. [Class 62.] In a combined curb and snaffle bridle, a cavesson or noseband 19 which carries a leather pad 22 with a flexible metal insertion and which passes also under the chin is supported by a supplementary head-strap 17 and is connected at either side by buckles to straps 27 attached to the curb-chain 28 which is linked at the centre to the chin portion 21 of the noseband. The straps 27 pass through the bit-rings 14 and through bearing rings 25 on the noseband in the manner shown, so that a strong pull of the reins has the effect of drawing together the noseband and curbchain to close the mouth. As an alternative, the straps 27 may be joined by an integral web portion which may or may not carry a pad with a flexible metal insertion.
Patent GB-330373-A (GB)
Title: An anti-skid device for motor vehicles
IPC: B60B39/00
Filed: 1929-05-07
Abstract: 330,373. Nairn, E. B., Moore, W. G., and Crombie, W. A. E. illay 7, 1929. Slipping of wheels, preventing. - An anti-skid device for motor vehicles comprises a swinging bracket A carrying a metal wheel W which can be moved downwards under its own weight into contact with the ground. The wheel cannot move laterally and is prevented from backward movement beyond a vertical position while it can be moved forward and upward out of contact with the ground. The bracket A can be actuated by a rod or chain controlled by the driver and is pivoted to the back and casing B by clamps C. The axle E of the wheel W is inclined forwardly, that is with its outer end in front of its inner end.
Patent GB-1060231-A (GB)
Title: Continuous tension monitor and tension control system for web-feeding mechanisms
IPC: F15B5/00
Filed: 1964-04-07
Abstract: 1,060,231. Feeding webs. MOUNT HOPE MACHINERY Ltd. April 7, 1964 [April 8, 1963 (2)], No. 14201/64. Heading B6B. [Also in Divisions F2 and G3] The tension of a web 12, Fig. 6, being unwound from a braked web-roll is detected by a roller 24, Fig. 2 (not shown), journalled to an upright 32 at one end, and supported by a pivoted lever 34 at the other end. A force balancing valve unit 40 for indicating and/or controlling the web tension comprises a pivoted flap valve member 46 loaded by a rod 41 with a force proportional to the web tension. The valve member 46 is supported by a pressure cylinder arrangement 60 including a sealing ring 64, which is supplied with high pressure air from a conduit 66. The pressure of the air in the conduit 66 is controlled by a valve 68, and the pressure gauge 70 gives an indication, when calibrated, of the mean tension of the web. A second conduit 22, with a needle valve 56, supplies a controlled flow of highpressure air to a fixed orifice in the part 49 of the valve unit 40. A resilient O-ring 50 mounted on the valve member 46 associates with the fixed orifice to provide a variable-area fluid-release orifice therebetween. Variations in the tension of the web 12, detected by the roller 24, results in variations of pressure in the conduit 22 due to the valving action of the valve member 46 on the fixed orifice. This variation of pressure is directly proportional to the tension changes from the mean tension in the web, and a suitably calibrated pressure gauge 58 is used to indicate these tension variations. The fluid cylinder 20 controlling the brake 14 of the web-roll can be connected directly to the conduit 22 to be controlled by the pressure therein. A pair of one-way check valves 80 and 84 arranged in parallel flow relation for opposed directions of flow may be incorporated to eliminate minor changes of pressure affecting the brake 14. The pressure cylinder support arrangement 60 may be replaced by a bellows, Fig. 5 (not shown). The fixed orifice and O- ring 50 arrangement may be replaced by a needle valve, Figs. 3 and 5 (not shown). In a modification, Fig. 1 (not shown), pressure cylinder support arrangement 60 is dispensed with, the flap valve member 46 being supported only by the pressure fluid emitting from the fixed orifice. The control device may be used to control a clutch forming part of a drive mechanism driving a web roll spindle when winding web.
Patent GB-1498116-A (GB)
Title: Data processing systems
IPC: G06F12/1036
Filed: 1975-04-07
Abstract: 1498116 Memory arrangement HONEYWELL INFORMATION SYSTEMS Inc 7 April 1975 [18 April 1974] 14201/75 Heading G4A Program segments are stored in virtual memory partitions, each program segment being defined by a descriptor which specifies a partition register which holds the identity of the partition containing the relevant segment, identifies the appropriate storage location by its base address within the partition and its size, and specifies access rights in reading, writing, altering and executing of the program segment; each user is assigned access to a limited number of memory partitions whose identities are held in respective partition registers. The output of the specified partition register is an address in a partition page table (Fig. 9, not shown) which which provides the real memory address of a page reference table for that partition which cross-references virtual page addresses to real memory addresses. Certain of the memory partitions may be shared by all users, others being exclusively assigned to users. A procedure in execution may transfer access to certain program segments to a called procedure by transferring the descriptors defining the segments to the called procedure. Access to a segment by a called procedure may be restricted to part of the segment by altering the descriptor to increase the base address or reduce the indicated size. The descriptors are stored in three segments 70, 72, 74 each associated with a register 71, 73, 75. In routine execution descriptors from segments 70, 72, 74 are loaded in registers 78 and reference program segments in virtual space 80, the real memory addresses of which are derived using the page reference tables 82. Descriptors to be passed to a called procedure are passed, either intact or altered to restrict access to part of the segment, to segment 74. Upon execution of a call instruction the current procedure is interrupted, the contents of registers 71, 73, 75 are stored at 86 for subsequent return, and the descriptors to be passed are transferred from segment 74 to segment 72, register 71 being loaded with the appropriate descriptor from segment 70 or 72 to identify the new segment 70.
Patent GB-829114-A (GB)
Title: Improvements in or relating to the weld uniting of austenitic steel workpieces
IPC: B23K35/30
Filed: 1956-05-08
Abstract: A method of joining austenitic alloy steel parts comprises providing a fusion weld deposit therebetween of the following per centage composition:-C 0.10 max; Mn 1.0 to 6.0, Si 0.30 max; Cr 14.0 to 17.0 (preferably 16); Ni 7.0 to 10.0 (preferably 8); Mo 1.0 to 2.0 (preferably 2); Cb up to 0.50; and the balance Fe apart from usual impurities.  Preferably also the Cr equivalent percentage defined as % Cr + % Mo + (1.5 x % Si) + (0.5 x % Cb) lies between 15.0 and 19.5, while the Ni equivalent percentage defined as % Ni + (30 x % C) + (0.5 x % Mn) is 10.25 to 13.50.