baber/WOPTO huggingface dataset:
Patent GB-327256-A (GB)
Title: Improvements in, or relating to, caps or stoppers for petrol and oil tanks, and other receptacles
IPC: B60K15/04
Filed: 1929-03-01
Abstract: 327,256. Ariel Works, Ltd., and Sangster, J. Y. March 1, 1929. Retaining-devices below closure.-A cap for petrol tanks &c. comprises a cover b which seats over the orifice of the receptacle, and a member e suspended on a locking-screw d which is prevented from rotation relative to the cover by a tongue f. Thei member e has diametrically opposed recesses &c. to allow clearance for lugs a', a<2> which form the initial anchorage for the cap on partial rotation thereof. Cam-like segments g may be provided on the upper surface of the member e for engagement with the lugs a<1>, a<2>. The screw d passes freely through the cover b and engages in a nut d<2> on the underside of the member e. A ring a is permanently secured within the orifice of the tank &c. and carries the lugs a', a<2>. Specification 17255/03 is referred to.
Patent GB-1076794-A (GB)
Title: Method of separating inorganic iodine from organic iodine
IPC: G01N31/12
Filed: 1964-06-22
Abstract: A method of separating inorganic iodine from organic iodine in organic and biological substances, e.g. blood, includes the steps of adding sufficient AgCl to the substance to react substantially with all iodide therein to form a precipitate containing inorganic iodine (i.e. AgI) and removing the supernatant substance containing organic iodine from the precipitate.  In a preferred embodiment, solid AgCl is added in an amount in excess over that which dissolves in the substance.  After separating inorganic iodine, the supernatant sample containing the organic iodine only may be subjected to the process of Specification 1,076,793, thereby estimating the organic iodine content of a sample; the inorganic iodine content can then be calculated by use of the total iodine content as obtained according to Specification 1,076,793.
Patent GB-870187-A (GB)
Title: Valves for controlling fluid flow
IPC: F16K7/10
Filed: 1958-03-04
Abstract: 870,187. Valves. SWAIN, F. E. March 2, 1959 [March 4, 1958], No. 6861/58. Class 135. A valve body consists of a through passage P, Fig. 1, for the fluid and a cylindrical guide G normal thereto, these two parts being of the same diameter and intercepting each other on areas lying in two oppositely inclined planes 14, 15 which converge on a common chord 16 transversely intersecting the axis of the passage P. Slidable in the guide is a cylindrical closure member 17 having a hemispherical end of the same diameter as its cylindrical part; wherein the member 17 is a ported plate 19 whilst an actuating rod 21 is attached to the latter. When the member 17 obturates the passage P parts of its cylindrical surface seal with body between the planes 14, 15 and the hemispherical end makes a line contact seal 27 with . the lower part of the passage P opposite the guide G. In the closed position the inlet pressure acts on the member as indicated by arrows 29 and is admitted to the interior of the closure through a port 28 and the plate 19, to act as shown by arrows 33, 34, 35 to distort the closure member and body to enhance the seal therebetween. Fluid may leak into the interior of closure member on the inlet side thereof in which case the port 28 is not provided. In a modification, the closure member 17a, Fig. 3, comprises an air bottle having an extension through which fluid at a pressure greater than that of the controlled fluid is admitted from an independent source to distort the bottle, which fluid may also be used to operate the member 17a in a piston-like manner. In another modification, the guide G1, Fig. 4, is externally threaded to receive an operating cap 49 from which depends a solid closure member 46 having a resilient envelope 47 of plastic or rubber bonded thereto, and a sealing ring 45 under a shoulder 53 that co-operates with a circlip 52 to limit the opening movement of the closure member. The guide G1 is of greater diameter than the passage P1 and is formed by a tool that makes a part circumferential groove 41 in the latter which extends upwardly as shown by dotted lines 42 round the sides of the passage P1 to a position 43 so forming a zone of a sphere at a position 44 between the two bores. The end of the envelope 47 engages the groove 41 when the closure member is seated. In a further modification, the closure member 46 tapers towards its hemispherical end whereby to expand the envelope 47 when closing pressure is applied by the cap 49.
Patent GB-1499922-A (GB)
Title: Filter cartridges
IPC: F02M35/024
Filed: 1975-02-18
Abstract: 1499922 Filter cartridges TECAFILTRES 18 Feb 1975 [18 Feb 1974] 6891/75 Headings BID and BIT A filter cartridge, e.g. for an I.C. engine air intake, comprises annular end caps of plastics material, each presenting a radially directed sealing surface 15, 25 divided into two annular lips to enhance flexibility. The seals made between surfaces 15, 25 and an enclosing metal or plastics housing are not affected by the tightness with which cover 19, 20 is secured thereto. Cartridges may have sealing surfaces directed inwards, outwards or various combinations of both. The sealing surfaces may cooperate with cylindrical or frusto-conical surfaces on the housing and cover, and the whole filter could be oval rather than circular in section.
Patent GB-102110-A (GB)
Title: Improved Auxiliary Driving Arrangement for Carrier Tricycles and the like.
IPC: B62D61/08
Filed: 1916-05-16
Abstract: 102,110. Lambourne, A. E., and Warri ck & Co., J. May 16, 1916. Motor cycles, tricars, and the like; motors, mounting or supporting.-Carrier tricycles &c. are provided with an auxiliary motor unit mounted beneath the carrier box and adapted to drive the front wheels The motor 11 is carried by pairs of brackets 12, 13 attached to the frame member 4 and wheel axle 6, and drives a transverse shaft 15 by chain gearing 18 enclosed in an aluminium or other light casing 19. The shaft 15, provided with a differential gear 17, is mounted in adjustable brackets 16 and drives the front wheels by intermeshing gears 20, 21 also enclosed in light casings 22. The exhaust-silencer 23 is secured to the front of the frame. The motor and brakes 28 are controlled from the handle-bar. In a modification, the brackets 13 are replaced by pivoted links, and the brackets 12 are attached to the frame by slotted connexions which permit adjustment of the motor to tighten the driving-chain.
Patent GB-231469-A (GB)
Title: A process for the manufacture of durable earthenware
IPC: C04B35/00
Filed: 1925-03-14
Abstract: 231,469. Oexmann, H. March 14, 1925. Processes.-Consists in subjecting clay to high pressure e.g. 300 atmospheres while still unshaped or roughly shaped, forming articles from the compressed mass bv a mechanical operation such as cutting or turning, and.then firing in one or two stages. Pressure may be exerted through a gaseous, liquid or powdered medium. To avoid penetration of a liquid medium, the body mav be coated with rubber or shellac solution or there may be incorporated with the material a little oil. fat or ceresite. The pressure medium may comprise material adapted to leave a coating to serve as a glaze or colouring agent. The Specification as open to inspection under Sect. 91 (3) (a) states that a light preliminary firing may be applied before pressing; also the invention may be applied to gypsum or cement. This subject-matter does not appear in the Specifias accepted.
Patent GB-813821-A (GB)
Title: Improvements in and relating to printed resistors and circuits containing printed resistors
Inventor: MITCHELL FREDERICK CHARLES
IPC: H05K3/06
Filed: 1954-05-10
Abstract: In a method for producing a printed resistor a copper foil is coated by means of a dipping operation with a resistor-forming colloidal graphite dispersion which has two parts, part A comprising DAG product 645 colloidal graphite using triethanolamine in place of ammonia as the stabilizer and part B comprising ground orange dewaxed lac flakes 25 ounces by weight, triethanolamine 4 ounces 390 grains, distilled water 72 ounces. The water is placed into a container heated by water jackets at 58 DEG  C. and the triethanolamine is added to the water.  A propeller-type slowsweep stirrer with a baffle plate maintains agitation.  The ground orange lac is weighted and is added with a stirring motion.  The top of the container is covered and the stirrer continues in motion until the lac flakes have dispersed to form a homogeneous dispersion.  The temperature during this time should not reach 60 DEG  C.  When the mixing is completed the dispersion is decanted into an earthenware pot and stored under vacuum until required for use.  The values of the resistance can be varied by altering the ratio of the quantity of part A of the mix to the quantity of part B.  Specifications 813,822, [Group XXXVI], 813,826 and 813,827 are referred to.
Patent GB-680413-A (GB)
Title: Improvements in or relating to the precipitation of hydrous vanadium pentoxide
Inventor: MAYER BRUNO
IPC: C01G31/02
Filed: 1951-03-27
Abstract: Hydrous vanadium pentoxide is precipitated from solutions containing pentavalent vanadium by mixing said solution with sulphuric acid sufficient to convert all alkali to alkali metal sulphate and to give a final free acidity of 0.1-10 g./l., the reaction being carried out in two periods, in the first of which, being at least 20 mins., the temperature is low enough (70-170 DEG F) to prevent the formation of a visible precipitate during the formation of soluble hexavanadic acid, and in the second, the solution is agitated at a higher temperature (180 DEG F to the boiling point) to precipitate the pentoxide.  There may be used neutral or alkaline solutions resulting from the leaching and/or quenching of soda-and/or salt-roasted vanadium bearing materials. A dilute sulphuric acid solution of the residue obtained by quenching a salt-roasted ore with 3 per cent soda solution may also be employed.  Suitably, the necessary sulphuric acid is added to the acid liquor, the mixture being added to the 3 per cent soda solution extract.  If, in the incubation period, the solution becomes reduced to the vanadyl state, sodium chlorate or peroxide is added.  The presence of up to 15 per cent of lower valency vanadium is, however, permissible.  The precipitate is dried or fused.  The soda content of the precipitate may be reduced by washing with a solution of ammonium sulphate, nitrate or chloride, calcium chloride, or aluminium chloride or sulphate. Alternatively, these compounds may be added to the precipitation liquor.  The air-dried precipitate is soluble in ammonia or soda solution, and can be precipitated therefrom as ammonium metavanadate by ammonium chloride.  It is stated that if the sulphuric acid is reacted with the hot vanadate solution, with omission of the incubation period, a compound having the formula Na2H2V6O17 is precipitated.
Patent GB-1132104-A (GB)
Title: Improvements in or relating to pulse circuit arrangements
Inventor: DAVIES ERIC
IPC: G01S13/78
Filed: 1965-02-18
Abstract: 1,132,104. Modifying pulse trains; pulse radar. MARCONI CO. Ltd. 30 Dec., 1965, No. 7085/65. Headings H3T and H4D. A circuit receives two pulse trains of different frequency and removes pulses from the higher frequency train so that the number in unit time is the same as that in the lower frequency train; the pulses are removed by a gate controlled alternately by the two trains. Such an arrangement is useful in stepping down the repetition rate of a primary radar to the maximum permissible for an associated secondary radar. In Fig. 2 input pulses (at the higher rate) are applied to a gating circuit G1, G2 (normally open) and through a delay line D to a bi-stable circuit C1, C2 which is thereby changed over to cut off the gating transistor G1. A relaxation oscillator comprising a unijunction transistor T1 operates as the lower frequency input and until this has changed the bi-stable circuit back to its original state no pulses can pass through the gate. The delay period may be arranged to shut the gate at the end of the input pulse or just after the leading edge thereof. In another form (Fig. 4, not shown) the input pulses and those from the unijunction are applied directly to the opposite sides of a bistable circuit (CG1, CG2), the delay line and gate being omitted. An input pulse cannot produce an output from the bi-stable circuit unless this has been changed over by a pulse from the unijunction since the last input pulse was received. The output pulses from the bi-stable circuit are differentiated (at DC) and used to trigger a pulse generator (PG) to produce the desired output. In this case, if the input pulse frequency is an integral multiple of the unijunction relaxation frequency, the latter can be synchronized with the input through a common resistor (T3).
Patent GB-803809-A (GB)
Title: Improvements in or relating to a driving device for a rolling mill and similar machines
IPC: B21B35/12
Filed: 1957-03-04
Abstract: 803,809. Toothed gearing. JIDET. March 4, 1957 [March 12, 1956], No. 7123/57. Class 80(1). Gearing for connecting the upper and lower shafts 8, 3 of rolling mills and similar machines includes two or more identical gear cases 28 each containing a pair of pinions 23, 33 meshing with each other and rotatably supported on ball bearings 24, 25. These gear units are adapted to be coupled to each other and to the upper shaft 8 and a drive shaft 18 geared to the lower shaft by means of fluted shafts or shaft ends 21a, 8a, 21. The arrangements allows for variation of the shaft centre distance and enables ready replacement of a complete gear unit.
Patent GB-699922-A (GB)
Title: Improvements in or relating to apparatus including a photo-electric cell
Inventor: DUNHAM CARLTON ROSSLYN
IPC: G05B11/01
Filed: 1951-03-28
Abstract: 699,922. Auto control of CO 2  content. GENERAL ELECTRIC CO., Ltd. March 28, 1952 [March 28, 1951], No. 7154/51. Class 38 (iv). [Also in Group XL (b)] Photo-electric apparatus for determining the position of a movable member, associated with, e.g. the recorder of a variable magnitude, which varies the incident light on a photo-cell, contains means for periodically comparing this light intensity with that of a reference intensity by means of a Wheatstone bridge circuit whose unbalance current may be used to control the variable magnitude. In an embodiment for recording and controlling the carbon dioxide (CO 2 ) content of an atmosphere which is periodically sampled, the percentage CO 2  content is indicated by the angular motion of a shaft 15 (Fig. 1) carrying an arm 14 and a recording pen 13 moving over a chart 10 to produce lines 12 recording the result of each analysis, the rest position of arm 14 being against a stop 16. The shaft 15 also carries a shutter 20 with a triangular slot 26 (Fig. 2) varying the light reaching a photo-cell 25 through a slit 23 from a lamp 21, the light reaching the cell 25 in the rest position of the arm 14 being determined by a rectangular slit 26a, and a portion of slit 23 adjustable by a movable edge piece 27. The bridge circuit for controlling the CO 2  content (Fig. 3) comprises two triode valves 30, 31 and two equal anode resistors 39, 40, initially balanced by adjustment of the grid voltages, thereby balancing two further triodes 48, 49 having a polarized relay winding 52 connected between the cathodes. The output voltage of photo-cell 25 unbalances the bridge, and the anode currents of triodes 48, 49, to energize relay winding 52 and close one set of contacts 53, thereby energizing one of two subsidiary relays 54, 55 to close an energizing circuit for one of two field windings 56, 57 of a reversible motor 58, driving the moving contact of a potentiometer 43 to vary the grid voltage of valve 31 to restore balance, and also driving the shaft of a Selsyn transmitter 66 coupled to a Selsyn receiver 67 to effect variation of a valve 68 controlling the CO 2  content of the gas being analysed. The energization of motor 58 and Selsyns 66, 67 is controlled by cyclically operated switches 64, 70 respectively, in such a way that the valve 68 is progressively adjusted in each cycle until the bridge balance is maintained in both the reference and measure positions of the pointer 14.
Patent GB-803246-A (GB)
Title: Improvements in or relating to electrostatic coating
IPC: B05B5/08
Filed: 1956-03-07
Abstract: <PICT:0803246/III/1> Electrostatic spraying apparatus comprises means arranged to be charged to a high potential for producing a stream of finely-divided electrically-charged particles, means for supporting the object to be coated in the path of the particles, and at least one plate located near at least a portion of the object, the plate being supported by an insulator and connected to a source capable of charging it to a high potential of the same polarity as the charged particles.  Where more than one plate is provided the plates may be charged to different potentials.  As shown, particles are sprayed from a source 10 connected to a high-voltage source 11 towards an earthed plate 20.  In order to coat the remote side of the plate 20, insulated plates 22, 25 are charged by being connected to potential dividers 15, 21, connected between high voltage source 11 and earth. Plates 24 are connected to a separate high-voltage source 23 which charges them to a potential higher than that of the source 11.  The atomizer may be a rotating cup, an air atomizer, or a stationary edge.
Patent GB-577973-A (GB)
Title: Improvements in or relating to the welding of the junctions between tubes and plates
IPC: B23K5/00
Filed: 1941-06-06
Abstract: 577,973. Making electric arc converters &c. GENERAL ELECTRIC CO., Ltd., and MORRIS, C. H. June 6, 1941, No. 7181. [Classes 83 (ii) and 83 (iv)] Uniting by fusion.-In forming a welded joint between a thin-walled metal tube and a relatively thick plate, the plate being apertured for the passage therethrough of the tube and/or a part welded thereto, such as in welding cooling tubes in the cylinders or tanks of air or water cooled metal clad vapour electric arc converters, between the tube and plate is interposed a sleeve or ferrule having two portions of differing wall thickness, one portion having its wall thickness intermediate between that of the tube and plate or approximately equal to that of the plate, and the other portion having its wall thickness approximately equal to that of the tube, the first portion of "the sleeve being welded to the plate and the second to the tube. The tubes may pass through the plate at an acute angle to the plane of the plate. In one form the ferrule 4 fits closely over the tube and at its lower end has a portion of wall thickness equal to that of the tube 2 to which it is welded at 5, the sleeve and cylindrical tank wall 1 being welded to each other at 6. In a modification the inner end of the sleeve may be thinner instead of the outer end and welded to the surface of the tube at that end. In a further form the sleeve alone may pass through the cylindrical wall 1, the thinner end being butt welded to the tube at 7 and the sleeve being welded at 6 to the tank. The sleeve may be externally shaped to fit a circular hole in the cylindrical tank wall instead of forming an elliptical hole in the wall.
Patent GB-916450-A (GB)
Title: Improvements in or relating to frames for pictures or the like
IPC: A47G1/06
Filed: 1961-02-28
Abstract: 916,450. Picture &c. frames. SIELLE, R. Feb. 28, 1961, No. 7263/61. Class 11. A frame for a picture, mirror or the like, comprises outer members 10 extending round the picture, at least one back support member 11 secured to the outer members and means for attaching the picture to the back support so that said means do not cover any part of the front surface of the picture, there being a continuous clear space between the outer members and the picture. A picture 13 is mounted on a stretcher 14 attached to the back support 11 by screws 17. The latter pass through enlarged slots or apertures 18 in the back support so that they may be adjusted laterally to accommodate any variation in size of the picture stretcher. The latter may be spaced from the back support by distance pieces, Fig. 3 (not shown). The outer members have flanges 20, 23 to support a sheet of glass and strips of sealing material are provided to prevent dust entering from the front. The rear of the frame may be closed in a dust-proof manner by a sheet of material secured to the back support members or by a single back support member in the form of a sheet of plywood.
Patent GB-781325-A (GB)
Title: Improvements in and relating to circuits for quantising the waveforms of electric signals
Inventor: ROUT ERIC RAYMOND
IPC: H04B1/62
Filed: 1955-03-11
Abstract: 781,325. Quantizing circuits. BRITISH BROADCASTING CORPORATION. Feb. 15, 1956 [March 11, 1955], No. 7273/55. Class 40 (4). A quantizing circuit comprises an input circuit connected via a gate to an output circuit means for maintaining the output signal constant when the gate is closed and means for opening the gate when the difference between the input and output signal exceeds a predetermined amount. As shown, the output signal on terminal 13 is determined by the charge on condenser 15 and is compared with the input signal on terminal 11 by means of the " long-tailed pair " 22, 23. When the two signals differ by a predetermined amount (determined by the tapping on resistor 26) the anode potential of one of the valves 22, 23 is raised sufficiently to cause one of the diodes 24 to conduct and pulse the mono-stable flip-flop 27, 28. The output from the latter feeds a phase-splitter 29 whose outputs cause the rectifier gate 19 to open thereby connecting the input terminals 11 to the output terminal 13 and allowing the charge on condenser 15 to take up a new value for subsequent comparison.
Patent GB-808663-A (GB)
Title: Improvements relating to time base circuit arrangements employing transistors
Inventor: EAMES ANTHONY RAINSFORD
IPC: H03K4/502
Filed: 1956-03-08
Abstract: 808,663. Transistor circuits for generating sawtooth waves. BRITISH THOMSONHOUSTON CO. Ltd. Feb. 26, 1957 [March 8, 1956], No. 7307/56. Class 40 (6). A time base voltage generator comprises a capacitor, means for charging the capacitor to generate voltage sweeps and a discharge transistor connected across the capacitor, the input and output circuits of the transistor being coupled by a transformer which, when the transistor is rendered conductive, rapidly causes saturation to occur in the transistor so that the discharge path has a low resistance. As shown, a capacitor C1 is charged through a transistor T1 connected so as to maintain the charging current constant. When the potential on the lower electrode of the capacitor passes beyond that of the bias E3 at the base of a transistor T2, the latter transistor begins to conduct and due to the coupling between the collector and base circuits through the transformer L rapidly saturates. Accordingly, the capacitor C1 is rapidly discharged. Synchronizing pulses are applied to the base of transistor T2 through capacitor C3 and a diode D prevents overswing of the transformer voltage. The circuit may be converted into one of single stroke type by increasing the value of the base bias of transistor T1 so that charging of capacitor C1 stops before the transistor T2 becomes conductive. The charging rate may be varied by adjusting resistor R3 or changing value of capacitor C1.
Patent GB-933078-A (GB)
Title: Improvements relating to vehicle interior mirrors
Inventor: MARCHINI PAUL PETER
IPC: B60Q3/02
Filed: 1961-03-01
Abstract: 933,078. Lamps combined with mirrors. PLASTMANT Ltd. Feb. 27, 1962 [March 1, 1961], No. 7398/61. Class 75 (3). [Also in Group XXXII] Relates to electric lamps combined with a vehicle interior mirror (see Group XXXII). A lamp 21, Fig. 1, and its lens 20, Fig. 3, are mounted above the mirror 19 and serve as a " courtesy light." A second lamp is mounted in a holder 25 located in a hole opening through the body 10 of the mirror, from the lamp recess 14 to a recess in the body, on the side opposite to the mirror, to illuminate, e.g. a vehicle licence carried in the recess.