baber/WOPTO huggingface dataset:
Patent GB-223579-A (GB)
Title: Improvements in or relating to tumbling barrels for use in the cleaning, polishing or finishing of articles
IPC: B24B31/02
Filed: 1924-10-15
Abstract: 223,579. Lupo, J. Oct. 15, 1923, [Convention date]. Rumbles and tumbling-barrels.-A tumbling- barrel having an abrasive lining comprises a split cylindrical body 10 and heads 11, 12 fitting therein and having projecting trunnions 13, which are supported in bearings 33. The edges 15, 16 of the body 10 are spaced apart to allow of introduction and removal of articles to be treated, and the end edges of the abrasive, for example, sand paper, lining 17, are turned over the edges 15, 16 of the barrel and clamped in position by bars 21, 22. The opening in the body is closed by a cover plate 26 hinged at 31 to the bar 21 and having secured thereto an abrasive lining 27, which is clamped in position by bars 28, 29; the cover plate is held closed by keepers 32. The barrel is driven by a belt around the head 12, or by means of one of the trunnions. The lining 17 may be backed by a fabric. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a lining other than an abrasive lining. This subject-matter does not appear in the Specification as accepted.
Patent GB-535415-A (GB)
Title: Improvements in or relating to connectors for flexible tubes
IPC: F16L33/01
Filed: 1939-08-25
Abstract: 535,415. Pipe couplings. BIGGIN, C. Aug. 25, 1939, No. 24517. [Class 99 (i)] In a coupling for a rubber tube with a metallic sheath, the rubber portion m is held between conical portions of sleeves a, b, and the coils of the sheath c are engaged in a recess d in the outer sleeve, the two sleeves being held together by a connection f screwed at g into the outer sleeve. Washers k, l may be inserted as shown.
Patent GB-1396084-A (GB)
Title: Hydrogenation of unsaturated hydrocarbons in hydrocarbon-  containing gas mixtures
IPC: C07C5/02
Filed: 1973-05-23
Abstract: 1396084 Hydrogenating hydrocarbons LINDE AG 23 May 1973 [24 May 1972] 24544/73 Heading C5E Unsaturated hydrocarbons are catalytically hydrogenated to form more saturated hydrocarbons by a two-zone hydrogenation the first zone being isothermal and the second being adiabatic. The isothermal and adiabatic reaction zones may be in a common reactor tube containing catalyst, the isothermal section (the lower) being surrounded by a liquid coolant and the adiabatic section (the upper) being surrounded by a vapour coolant preferably constituted by coolant liquid evaporated during the isothermal reaction. Reactions mentioned are the hydrogenation of acetylene in the presence of ethylene and the hydrogenation of propyne in the presence of propane. Suitable coolants are methanol or C 4  hydrocarbons.
Patent GB-791251-A (GB)
Title: Improvements in and relating to electrical pulse forming networks
IPC: H03K5/07
Filed: 1955-08-26
Abstract: 791,251. Changing wave shape. GENERAL ELECTRIC CO. Aug. 26, 1955 [Ausg. 27, 1954], No. 24593/55. Class 38 (2). A pulse forming network comprises a transistor 10 with a square wave generator 14 connected across the base and emitter electrodes and an oscillating L.C. network 16, 15 connected between the base and electrodes 13, 11 to which are connected output terminals 17, 18. The losses in the L.C. network are such that the circuit has less than critical damping. Figs. 2 (c), 2 (d), 2 (e) and 2 (h) show respectively the input voltage and current and output voltage and current in a resistive load when the impedance of generator 14 is much less than that between emitter and base electrodes 12, 13. With reversal of this impedance ratio, the output voltage is shown in Figs. 3 (c). The transistor may be of P-N-P or N-P-N type.
Patent GB-286992-A (GB)
Title: Improvements in or relating to braking mechanism for railway vehicles
IPC: B61H5/00
Filed: 1927-09-19
Abstract: 286,992. Masion, A. Sept. 19, 1927. Acting on flat sides of wheels and discs. - In brake mechanism for railway vehicles of the type comprising shoes arranged for engagement with the side faces of wheels or drums secured to the axles between the wheels of the vehicle, the shoes are located above the axle carrying the wheel or drum and are suspended from the vehicle frame by pivoted arms the longitudinal axis of which is disposed in the vertical plane extending through the axle. The pair of shoes 4 located on either side of a drum 3 on the wheel axle 2 are suspended each by an arm 5 pivoted at 6 on the vehicle frame. The shoes have a pin-and-slot connection 7 with the arms 5 and springs 9 hold them in the vertical position in release. They are applied to the drum 3 by bell-cranks 10 pivoted on pins 11 one arm of each bell-crank passing through a yoke 12 on the arm 5 and to other arms being connected by links 14 and an equalizing bar 15 to an operating rod 16 which may be connected to the piston of a fluid-pressure cylinder.
Patent GB-1490000-A (GB)
Title: Stabilisation of sodium metasilicate
IPC: C01B33/32
Filed: 1975-06-09
Abstract: 1490000 Treated sodium metasilicate SOC FRANCAISE DES SILICATES SPECIAUX SIFRANCE 9 June 1975 [10 June 1974] 24661/75 Heading ClA [Also in Division C5]  Sodium metasilicate containing less than 10% by wt. of water is treated with gluconic acid and/or at least one of its salts to (a) improve the stability of the metasilicate and/or compositions containing it, in the presence of a surfactant and/or (b) reduce the formation of dust during handling. Preferably gluconic acid or sodium gluconate is used and is applied as a powder or saturated solution (e.g. by spraying).
Patent GB-170991-A (GB)
Title: Improved apparatus for use in washing out locomotive or other boilers
IPC: F28G1/16
Filed: 1920-08-26
Abstract: 170,991. Broscombe, H., and Economical Boiler Washing Co., Ltd. Aug. 26, 1920. Washing-out.-A fitting for use in washing- out locomotive and other boilers is adapted to be inserted through one of the usual wash-out holes and to discharge a number of jets of water laterally along its length. A pipe 1 closed at one end 2 has a number of discharge nozzles 3, each having its wider end inside the tube and its axis so inclined as to project the water radially. The nozzle near the closed end of the pipe may be at right-angles to the axis of the tube, and the nozzle near the connection with the inlet pipe may be more inclined than the other nozzles.
Patent GB-605886-A (GB)
Title: Apparatus for the selective switching-off of sections of line of an electric distribution network
IPC: H02H7/30
Filed: 1945-09-25
Abstract: 605,886. Protective cut-out systems; electrically-released switches; retarding action of switches. LANDIS & GYR SOC. ANON. Sept. 25, 1945, No. 24834. Convention date, Sept. 26, 1944. [Class 38 (v)] In apparatus for the selective switching-off of sections of a distribution network, for example on the failure of a quick-acting distant cut-out, each main switch 1 has a time-relay 7 dependent on voltage only and connected to the mains in such a manner that, apart from the switches beyond the short-circuit point, only the switch next before that point is opened, whilst the others remain closed due to the higher potential and longer switching time of their relays. Upon a short-circuit at 44, the contacts 5, 6 of the undervoltage relay 4 close and coils 8a, 9a and 31 are energized. The latter rotates a pin 19 on a spring-urged armature 32 clear of a contact-carrying arm 15 on a spindle 13 which is then rotated by a spring 17 to close contacts 14, 18. This closing movement is braked by coils 8a, 9a which act on an S- shaped armature 10 on the spindle 13, so that the time required for closing is dependent upon the voltage in the mains adjacent the switch 1 and increases for switches away from the shortcircuit point. Closure of contacts 14, 18 energizes a relay 30 which closes holding contacts 23, 26 and contacts 37, 38 in the trip-circuit of switch 1. When the latter opens, all the relays 7 are restored to their normal positions. The time of closing of contacts 14, 18 for a given voltage may be adjusted by a lever 39, 41 acting on the armature 10, or by adjustment of the fixed contact 18. The under-voltage relay 4 may be replaced by an over-current relay or by a combination of the two kinds of relay. The armature 10 is so shaped that the first half of its movement is braked, but the remainder is not, so that the contact pressure is thereby increased. The cores of the electromagnetic brake may contain insets of high initial permeability metal, such as " Mumetal" (Registered Trade Mark), arranged on the outer sides of the cores in order to increase the braking effect.
Patent GB-745206-A (GB)
Title: Compositions derived from polymers and copolymers of acrylonitrile
IPC: C08K3/00
Filed: 1952-10-03
Abstract: Acrylonitrile polymer solutions comprise at least one polymer containing at least 85 per cent of acrylonitrile in its molecule, a solvent therefor such as dimethyl formamide, and as a colour stabilizer 0.005 to 15 per cent of at least one stannous salt of an organic carboxylic or inorganic acid, such as stannous formate, stannous oxalate, and stannous chloride.  Polymers specified are polyacrylonitrile and a copolymer of acrylonitrile and N-vinyl imidazole.  The polymer solutions may be used in the production of films, filaments, threads, artificial horsehair, and cast objects.
Patent GB-915965-A (GB)
Title: Improvements in hose couplings
Inventor: BURDEN JESSE WILLIAM
IPC: F16L37/38
Filed: 1960-07-16
Abstract: 915,965. Hose couplings. WOOTTON Ltd. O J., and BURDEN, J. W. July 17, 1961 [July 16, 1960], No. 24857/60. Class 99(1). A coupling comprises male and female components 10, 11 each associated with a section of a pipe line, and cam means 23 carried by one of the components and rotatable about the axis of the coupling and arranged to operate one or more sliding dogs 25 which move radially in relation to the axis of the coupling so as to engage one of the two components to produce relative axial movement between the two components and bring the male component into sealing engagement with the female component. As shown, the cam ring 20 carries arcuate cam strips 23 in eccentric relation to the axis of rotation of the ring and which slidably engage in transverse grooves of the dogs 25 the latter being movable radially in slots 27 formed in a backing plate 26. As the ring 20 is rotated by a handwheel 22 the dogs are moved radially inwardly or outwardly to respectively couple or uncouple the components 10, 11, the dogs having inclined surfaces 30 which are engageable with correspondingly inclined surfaces on the component 10. The latter has a nose cap 17 which engages an annular sealing ring 16, and is provided with a valve comprising pivoted flaps 43 opened by fluid pressure and against the pressure of springs 45. A lever is provided to lock the handwheel in the coupled or uncoupled position of the components.
Patent GB-242759-A (GB)
Title: An improved method for separating the set from the aerial in wireless receiving & transmitting sets
IPC: H04B1/04
Filed: 1924-10-20
Abstract: 242,759. Rawsthorne, W. Oct. 20, 1924. Coupling aerial and detecting or oscillating circuits.- The aerial A, Fig. 1, and detector circuits C are coupled by a link D characterized by the feature that the aerial voltage is stepped down across the coils b, b<1>, and is stepped up again across the coils c, c<1>. The transformers b, b<1> and c, c<1> are preferably of the type described in Specification 233,053. It is stated that this reduction of voltage reduces capacity losses in the link D. The aerial may be only approximately tuned, fine tuning control being effected by the condenser F, which may be remote from the aerial. The link D may be auto coupled to the aerial and detector circuits. Fig. 3 shows an arrangement wherein the secondary circuit C is tuned either to a long or short wavelength by means of a switch S according to whether an aerial loading coil b is in circuit or not. The wavelength range can be broadened by using an aerial inductance with high inherent capacity, which may be secured either by using multilayer coil.windings or by means of a shading plate of metal placed close to the coil. The link D may form part of the filament heating circuit of a valve. A similar step-down link circuit may be used to couple a valve oscillator to a transmitting aerial.
Patent GB-1379102-A (GB)
Title: Regulator valves
IPC: F16K47/00
Filed: 1972-05-26
Abstract: 1379102 Valves LENINGRADSKY METALLICHESKY ZAVOD I MEN I XXII SIEZDA KPSS 26 May 1972 24878/72 Heading F2V A method of eliminating vibrations of a regulating valve provided with a mobile system comprising a stem 3 coupled with its actuator 8 and carrying a head 4 is characterized by the steps of determining the natural frequency of the mechanical oscillation of the mobile system at a given stem position and determining, at the same stem position, the natural frequency of the acoustic oscillation of the working medium in the flow chamber 15 and tuning the two frequencies out of resonance. This is accomplished by varying the thickness of the ring plates 6 and/or the mass of the weight 7, or by varying the dimensions and/or the shape of the flow chamber.
Patent GB-646293-A (GB)
Title: Improvements in and relating to the casting of clay articles
IPC: B28B1/26
Filed: 1947-09-12
Abstract: 646,293. Casting clay slip. PEARCE, N., and JOHNSON, J. A. Sept. 12, 1947, No. 25012. [Class 87 (ii)] Slip is cast in to moulds 12 as they move along a track 10 in one direction and then, after removal of the moulded articles, slip is cast in the moulds during their movement back in the opposite direction. Slip may be poured from nozzles 13 and excess slip tipped into a trough 15, while the moulds are moving from left to right. Nozzles 13a and a trough 15a are provided for the return journey of the moulds. The track is extended far enough on each side of the nozzles to allow all the necessary operations, e.g. drying, to be carried out.
Patent GB-736319-A (GB)
Title: Improvements in or relating to removable sealing means for cartons and the like
Inventor: WHITE IRVINE EVERARD
IPC: B65D5/06
Filed: 1952-10-06
Abstract: 736,319. Spring clips. ILLINGWORTHS (PLASTICS), Ltd. Oct. 6, 1953 [Oct. 6, 1952], No. 25030/52. Class 44., A clip for sealing the mouth of a carton and of the kind which is basically of narrow channel shape has the sides formed with opposed series of inner pointed protrusions 12 in a manner such that removal of the clip from a carton in a direction axially of the carton or depth-wise of the clip is strongly resisted by a biting action of the protrusions or certain of them on the mouth-forming parts of the carton. As shown the clip comprises two channel-shaped sections 2, 3, joined by bars 4, 5 in line with their mouths and having lugs 6, 7, 8, 9 projecting from their free ends. The protrusions 12, of the shape shown in Fig. 3, are formed on opposed faces of the bars 4, 5 and may be in staggered relationship or otherwise. The clip is engaged with or disengaged from the carton by sliding it longitudinally for which purpose the lugs 6-9 are rounded to provide flared mouths. Specifications 548,553, [Group XVII], and 703,569 are referred to.
Patent GB-990870-A (GB)
Title: An improved valve assembly for use with breathing apparatus
IPC: A61M16/20
Filed: 1962-06-29
Abstract: 990,870. Respiratory appliances. AGA A.B. June 29, 1962 [July 4, 1961], No. 25037/62. Heading A5T.  A valve arrangement for artificial respiration equipment comprises a chamber having connections for a gas supply, a mask and an outlet to atmosphere, and a valve member movable between positions in which it closes the inlet and outlet respectively. The chamber 1 has tubular connections 3, 4, 5, the first of which is an outlet to atmosphere while connections 4 and 5 are coupled to a gas supply and the user's mask respectively. On inhalation, gas through connection 4 moves the flexible valve member 6, which is preferably of rubber, against the outlet 3 to close it, at the same time passing around the valve member to the mask connection 5. On exhalation, the valve member 6 is moved back by the pressure of the exhaled air so as to close the inlet 4 and allow the air to pass out through the outlet 3.
Patent GB-279237-A (GB)
Title: Extractor ventilator for moving vehicles
IPC: F23L17/02
Filed: 1926-10-08
Abstract: 279,237. Ludlow, E. R. Oct. 8, 1926. Ventilators for moving vehicles comprise a hollow metal casing having one of its four sides open and protected by an inclined deflecting shield j which is spaced from and parallel to the opening. An opening, preferably fitted with a tube f, is arranged in the base of the casing and a baffle g may be provided adjacent such opening. The casing, which may taper in depth towards one end, consists of a base a, two straight or curved sides b and a curved top c secured at one end to the base, and the opening d may be disposed either towards or at right-angles to the direction of motion. A baffle plate h extends across the opening near the bottom, and such opening is inclined by reason of the sides b being undercut at their ends. The curved baffle j is formed as an extension of the base beyond the opening d.
Patent GB-1531853-A (GB)
Title: Internal combustion engine
IPC: H01T13/08
Filed: 1976-06-17
Abstract: 1531853 Exhaust gas recirculation NISSAN MOTOR CO Ltd 17 June 1976 [24 June 1975]  25103/76 Heading FIB In order to minimise the NOx content of the exhaust gases, an I.C. engine is operated with EGR of 12% or above and has a part-spherical combustion chamber and a spark-plug which is located adjacent the geometrical axis of the cylinder where the thickness of the combustion chamber is a maximum. The part-spherical chamber has a radius R = (0.65 Œ 0.1) x D where D is cylinder bore diameter. The periphery of the spherical portion has a diameter D' = (0À9 Œ 0À05) x D and a squish area 54 has a thickness t = 3 Œ 1À5 (mm). D is in the range 70-90 mm. Secondary air to promote after-burning is injected into the exhaust port through a pipe 34 supplied by an air pump. In a four cylinder engine sequentially adjacent pairs of cylinders have siamesed exhaust ports.
Patent GB-733477-A (GB)
Title: Improvements relating to seals for attachment to fabrics
Inventor: STANLEY LEONARD GROSVENOR
IPC: G09F3/14
Filed: 1951-10-27
Abstract: 733,477. Attaching seals to fabrics. STANLEY & SONS, Ltd., A. Oct. 27, 1952 [Oct. 27, 1951], No. 25168/51. Class 73. A seal 8, Fig. 4 for attaching to a roll of fabric A is made of plastic, e.g. cellulose acetate, and is formed with a loop 8a, the securing tape 9 being first looped through a slit in the fabric and a separately formed plastic loop 10 threaded on to the doubled tape, the adjoining free ends of the tape being then passed through the loop 8a and back through the loop 10 as shown in Fig. 3, whereupon the loop 10 is slid down to effect a tight fit around the loop 8a as shown in Fig. 4 and to grip the tape 9. A small quantity of acetone or other solvent is then introduced into the open top of the loop 10 to emulsify the contacting surfaces of the two loops and to effect such attachment thereof that they can be separated only by their destruction. The paper 11 on the seal is such as to permit the penetration of acetone or other solvent therethrough, so that its removal can be effected only by scraping.
Patent GB-243870-A (GB)
Title: Improvements in and relating to lifting jacks
IPC: B66F3/10
Filed: 1924-10-23
Abstract: 243,870. Hill, J. Oct. 23, 1924. Jacks.-In screw jacks having two concentric threaded members which are adapted to be extended telescopically, the hollow inner member 15 is engaged by a rod 17 of non-circular crosssection which is prevented from rotating by the engagement of radial extensions 18 with vertical slots 19 in the standard 1. The member 15 is screwed into a sleeve 4 which is in threaded engagement with the standard 1 and carries a ratchet wheel 5. A shallow annular cup-like member 7 surrounding the wheel 5 is rotatably mounted on the steeve 4 and has a sleeve-like extension 8 on which is mounted an axially rotatable handle carrier 11. The squared shank 9<a> of the slidable pawl 9 engages the bore of the carrier 11.
Patent GB-465331-A (GB)
Title: Manufacture of new esters of polynuclear cyclic oxyketones
IPC: C07J1/00
Filed: 1936-09-17
Abstract: Esters of saturated or unsaturated polynuclear cyclic oxyketones of the type of androstane-3-one-17-ol are prepared by treating the oxyketone with an acylating agent having more than two carbon atoms and which does not contain a group having a tendency to salt formation or capable of conversion into a salt forming group.  The preferred acylating agents are fatty acids containing from 3--10 carbon atoms, such as propionic acid, butyric acid, valerianic acid, capric acid, benzoic acid and crotonic acid.  Examples of suitable oxyketones are testosterone, dihydrotestosterone, 17-methyl-testosterone, and 17-methyl-dihydrotestosterone.  In examples: (1) testosterone is treated with propionic acid anhydride in the presence of dry pyridine; (2) testosterone is treated in pyridine solution with n-butyric acid anhydride; (3) testosterone is treated in pyridine solution with iso-butyric acid anhydride; (4) testosterone is treated in pyridine solution with n-valerianic acid chloride; (5) testosterone and capric acid are heated at 300 DEG  C. in an atmosphere of nitrogen; (6) testosterone is treated in pyridine solution with benzoyl chloride; (7) dihydrotestosterone is treated in pyridine solution with propionic acid anhydride.  Instead of pyridine, another tertiary base such as dimethylaniline may be used. Other compounds mentioned as being prepared according to the present invention are androstane-3-one-17-trans-ol-hexahydrobenzoate, and androstane-3-one-17-cisol-hexahydrobenzoate.
Patent GB-171520-A (GB)
Title: Improvements in and relating to the production and modulation of electrical oscillations by means of thermionic valves
IPC: H03C1/22
Filed: 1920-09-02
Abstract: 171,520. Radio Communication Co., Ltd., and Lea, N. Sept. 2, 1920. Thermionic modulating systems.-In a method of controlling or modulating, the grid circuit of a valve generator is shunted by a rectifier such as a two-electrode valve with its anode potential con. trollable by a microphone, currents through the rectifier being passed back inductively into the grid circuit so as to oppose the original oscillations therein. In an example, Fig. 2, a generator valve V1 has its output controlled by oscillations of variable amplitude induced in the coil L3 in its grid circuit from the coil L4. Oscillations in the coil L4 are varied by being passed through a valve V2, the conductivity of which is varied microphonically. The coil L5 is wound on the coil L2 and is similar to it and merely excludes the microphone transformer T from the oscillation circuit. According to the Provisional Specification, the valve V2 may have three electrodes, and the opposing oscillations may be obtained from the output circuit of the valve V1.
Patent GB-634345-A (GB)
Title: Improvements relating to aerofoils
IPC: B64C3/00
Filed: 1947-09-18
Abstract: 634,345. Aerofoils. GRIFFITH, A. A. Sept. 18, 1947, No. 25517. Drawings to Specification. [Class 4] The thickness-chord ratio of a swept-back or swept-forward aerofoil increases progressively in the spanwise direction from a point intermediate the root and tip towards the tip to maintain the isobars thereon at a substantially constant inclination to the direction of free stream, whereby the shock-stalling characteristics of the aerofoil are improved.