baber/WOPTO huggingface dataset:
Patent GB-1475349-A (GB)
Title: Exhaust gas recirculation system of an internal combustion engine
IPC: F02M25/07
Filed: 1974-08-28
Abstract: 1475349 IC engines - exhaust & gas recirculation NISSAN MOTOR CO Ltd 28 Aug 1974 [31 Aug 1973] 37653/74 Heading F1B The invention relates to an exhaust gas recirculation system for an I.C. engine in which a conduit 18 inter-connects an exhaust conduit 17 and an intake manifold 16 of the engine for recirculation of engine exhaust gas into the intake manifold. A control valve 22 is disposed in the conduit 18 being controlled by a diaphragm unit 26 which is responsive through ducts 70, 72, 74 to suction pressure i.e. vacuum in the intake manifold, there being means operable to delay the transmission of vacuum from the intake manifold to the vacuum chamber 58 upon increase of vacuum. The delaying means is constituted by the ducts 70, 72, the duct 70 being provided with a restriction 76, and the duct 72 being provided with a check-valve 78, the check-valve acting to close the duct 72 when the vacuum in the intake manifold is increased, and acting to open the duct 72 when the vacuum in the intake manifold is reduced at a rate which exceeds a predetermined value. An auxiliary  control valve 20 is provided in the recirculation conduit 18 to reduce the flow of engine exhaust gas when the degree of opening of the valve 22 is small. The auxiliary control valve 20 is controlled by a diaphragm unit 24 in response to the vacuum in the Venturi section 14 in the intake conduit 11; the control valve 20 acts to reduce and increase the flow of exhaust gases when the vacuum in the Venturi is low and high respectively. The chambers 54 and 52 opposed to the vacuum chambers 58 and 56 are open to atmosphere.
Patent GB-862826-A (GB)
Title: Flexible tubes and the like
IPC: F16L11/12
Filed: 1959-11-09
Abstract: 862,826. Flexible tubes. HARLICK, W. A. Dec. 21, 1959 [Nov. 9, 1959], No. 37836/59. Class 99(2). In a method of forming a flexible tube into a self supporting shape a wire or like supporting element of pliable material is inserted through the fore of the flexible tube and the tube is bent to the desired shape, the wire serving to retain the tube in the desired shape as a self-supporting structure.
Patent GB-940853-A (GB)
Title: Voltage sensitive regulating or control circuit
IPC: H03F3/12
Filed: 1961-10-23
Abstract: 940,853. Terminal-diode amplifying circuits; amplitude modulating systems. GENERAL ELECTRIC CO. Oct. 23, 1961 [Nov. 2, I960], No. 37962/61. Headings H3T and H4L. A voltage-sensitive regulating or control circuit comprising a tunnel diode biased to a point on the negative-resistance region part of its characteristic and having a frequencyselective load effectively connected across the tunnel diode, has a control signal coupled to the diode-biasing means for varying the bias on the diode and hence the gain of the amplifier. As shown in Fig. 1, a tunnel diode 1 is biased by circuit 3 through an inductance 2 to establish a direct current load line which always has only a single intersection on the negative resistance part of the characteristic, Fig. 2 (not shown). A capacitance 8 and inductance 2 form a frequency selective load in parallel with the diode when signals are impressed on common input and output terminals 9-9. Control signals are applied to terminals 10-10 so as to vary the diode bias and hence the voltage gain of the tunnel diode, Fig. 3 (not shown). In Fig. 4, the circuit of Fig. 1 is used in the I.F. section 15 of a superheterodyne receiver which includes aerial 12, R.F. amplifier 13, local oscillator and mixer 14, detector 16 and A.F. amplifier 17. An A.G.C. signal proportional to the input terminals of detector 16 is derived from the output thereof, integrated by resistance 21 and capacitor 20 and passed to terminal 10 of the circuit 19. An increase in the carrier signal from a given valve produces a corresponding increase in the control signal derived from the detector and applied to the tunnel diode at terminal 10. The control signal is of such polarity with respect to the diode that an increase in the control signal results in a decrease in the bias on the diode and a lowering in gain of the circuit, which tends to counteract the effect of the increased input signal. Similarly a weaker signal results in a greater gain of the circuit. Amplitude modulator.-The circuit of Fig. 1 may also be used to amplitude modulate a selected input signal on terminals 9-9 by applying to terminals 10-10 a control signal which varies at a rate less than that of the selected input signal. Thus the varying control signal causes a time varying change in the gain of the circuit resulting in a corresponding change in the amplitude of the impressed signal.
Patent GB-913171-A (GB)
Title: Improvements in or relating to waveguide switches
Inventor: MORAN MICHAEL JAMES
IPC: H01P1/11
Filed: 1959-11-10
Abstract: 913,171. Waveguides. DECCA Ltd. Nov. 4, 1960 [Nov. 10, 1959], No. 38115/59. Class 40 (8). A waveguide switch comprises a length of circular waveguide 10, Fig. 1, coupling means 12 for feeding signals into the waveguide so as to be propagated in a TE 11  mode in a first plane, and a Faraday polarization rotator 14 for switchably rotating the plane of polarization through 45 degrees on either side of said first plane. The switch may be used for coupling a transmitter and/or a receiver alternately to two or more different aerials and may be provided with a second Faraday rotator 19 with coupling means 12, 13, 18, 22, 23, 24 constituted by radially extending rectangular waveguides. In operation, waves in a TE 01  mode in the transmitter 12 are propagated in a TE 11  mode in the circular waveguide with their plane of polarization in a direction A, Fig. 2, and are rotated either by +45 degrees to plane C, and thus emitted through the first aerial 18 and short-circuited by conductive plate 17, or by - 45 degrees to plane B, thus continuing along the waveguide 10 to the second Faraday rotator 19 which allows them either to pass straight out to aerial 23 or rotates them through 90 degrees and hence out through aerial 22. Also, since the Faraday rotators are non-reciprocal devices, signals incident to, say, aerial 22 will be coupled to receiver 13 if the switched conditions are such that the transmitter is also coupled to aerial 22. A rectangular waveguide 24 connected to a dummy load is provided to eliminate crosscouplings external of the switch 19 between aerials 22 and 23. Further output ports may be provided by replacing the short circuit 11 at the far end of the waveguide 10 by a polarization dependent short circuit, eliminating one of the output ports 22, 23, and providing a further length of circular waveguide comprising a polarization rotator and two output ports.
Patent GB-978639-A (GB)
Title: Wooden-flanged beam with a sinuous web
IPC: E04C3/14
Filed: 1962-10-09
Abstract: 978,639. Composite wooden beams. H. HESS. Oct. 9, 1962 [Oct. 19, 1961], No. 38136/62. Heading E1V. A wooden-flanged beam has a sinuous web comprising at least two interconnected layers of plywood 2, 2a, whose top and bottom edges are received in grooves 4a in the flanges. An intermediate sheet, of plastic material (as shown), chip-board or fibre-board may be used; the layers may be glued, pinned or stapled together, and the web may be glued into the grooves 4a, or held in by the flanges being bolted together (Fig. 6 not shown).
Patent GB-381843-A (GB)
Abstract: 381,843. Gum-massaging appliances. BROWN, F., 4629, Adams Avenue, Philadelphia, U.S.A. March 11, 1932, No. 7296. [Class 81 (ii).] A device for massaging the gums and cleaning the teeth consists of an elongated member 1, Fig. 9, of rubber with corrugations 4, Fig. 1, which, in addition to cleaning and massage functions, form pockets to hold tooth powder or paste. A guard 2 of thin material of disc form serves to prevent the device being swallowed. Corrugations 8, Fig. 3, on the edge of the disc also serve as means to clean the teeth. The whole device is reinforced by a flat steel element 12, Fig. 7, made resilient by a cut-out portion 13. The member 1 may be triangular in cross section, Fig. 3, but may be rectangular or round and modifications may be made in the set of the teeth 4.
Patent GB-1036336-A (GB)
Title: Improvements in or relating to furniture construction
Inventor: ROBINSON GEORGE HENRY
IPC: A47B77/02
Filed: 1963-09-28
Abstract: 1,036,336. Sectional furniture. HYGENA Ltd. Sept. 25, 1964 [Sept. 28, 1963], No. 38293/63. Heading A4U. Base units or cabinets 10 are connected to a common top-piece 12 by slidably engaging blocks 21 in a longitudinal guideway 15 in its undersurface and passing the shanks of screws 24 through slots 19 in angle brackets 16, which are secured to the cabinets 10, and screwing them into threaded holes in the blocks 21. The position of the cabinets may thus be adjusted by loosening the screws 24 and sliding the blocks 21 in the guideway 15.
Patent GB-924448-A (GB)
Title: Transmission mechanism
IPC: F16H57/022
Filed: 1961-10-27
Abstract: 924,448. Milling. CINCINNATI MILLING MACHINE CO. Oct. 27, 1961 [April 14, 1961], No. 38499/61. Class 83 (3). [Also in Group XXIV] A clutch mechanism is provided between the two elements of a splined driving connection to suppress chatter in the splines, the clutch being releasable to allow axial movement of the splined elements. A milling-machine spindle 16 is carried in a quill 20 axially adjustable by a rack-and-pinion mechanism. The spindle is splined at 46 to receive drive from an internallysplined sleeve 26 driven at high or low speeds, from a motor 106 and hydraulically actuated clutch 96, through gears 114, 116, 38 and 114, 116, 120, 34, respectively. Two split taper collets 48, 52 are normally engaged by a spring 58 to produce a chatter damping force between the spindle 16 and the sleeve 26, and are releasable by a piston 66 actuated by oil-pressure supplied by a valve 82 to allow axial adjustment of the spindle.
Patent GB-858588-A (GB)
Title: Process for modifying natural silicate clays
Inventor: NORWOOD ANTONIO STUART
IPC: B01J20/12
Filed: 1957-12-11
Abstract: An organophilic cation-modified clay is produced by reacting a suspension of a natural silicate clay, having a base exchange capacity of 20 to 25 milliequivalents per 100 grams of clay in the form of particles less than 5 microns, preferably less than 1 micron, with a salt of a base having in the cation at least one organic radical covalently attached to a polyvalent atom, thereby imparting to the clay particles a substantial gel characteristic in liquid paraffin.  Suitable substances are amine and quaternary ammonium salts and similar compounds having arsenic, antimony, tellurium, oxygen, or sulphur in place of the nitrogen atom. Preferably the organic radical has at least 10 carbon atoms in a straight chain or at least 6 carbon atoms in a ring as in cyclohexane.  The clay suspension may either be in an aqueous or organic liquid medium.  In a modification of the process the clay is first reacted with a mineral acid to convert it to the hydrogen form, and is then reacted with a base capable of forming a salt as specified above.  A preferred clay is Sepiolite. In examples dimethyl dioctadecylammonium chloride and cyclohexylamine are employed to modify sepiolite. Specification 664,830 is referred to.
Patent GB-895797-A (GB)
Title: Pick-up drum, more particularly for harvesting machines
IPC: A01D89/00
Filed: 1960-11-09
Abstract: 895,797. Tine-wheels for picking up hay. MASCHINENFABRIK FAHR A.G. Nov. 9, 1960 [Nov. 11, 1959], No. 38551/60. Class 78 (1). Deflectors are provided for automatically straightening deformed tines 5 (Fig. 3) on a device for picking up hay. In the form shown the ends 18 of the usual guides 9 for the tines 5 are turned so that the major dimension is at right-angles to the shaft 7 of the tine drum and a deflector 20, with an engaging surface 21, is formed on each guide. An inclined portion 19 joins the deflector 20 to the guide 9. The space between the rearward ends 14, 18 of the guides 9 is left clear to permit free movement of any deformed tines. The tines 5 are formed in pairs, as shown in end view in Fig. 2, and are mounted on spindles 4 supported between end discs 3. The invention may be applied to tines carried by endless bands.
Patent GB-1394978-A (GB)
Title: Jib cranes
IPC: B66C23/84
Filed: 1973-08-15
Abstract: 1394978 Mast-type jib cranes DEMAG AG 15 Aug 1973 [25 Aug 1972] 38565/73 Heading B8B A mast-type jib crane has a tubular mast 1 on the upper end of which is secured a support member 7 carrying a slewing bearing to the inner rotatable part 9 the jib (not shown) is attached. The lower surface of the member 7 is dished so that it projects into and is suitable for attachment by welding to various diameter tubes which may form the mast 1 as indicated in outline. As shown the outer part of the bearing is stationary, being screwed to a flange 8 welded to the member 1, though the inner part of the bearing may be stationary, being attached to the member 7 and the outer part rotatable, being attached to the jib. In modifications (not shown) the support member 7 may be a frustum suited to the mast 1: conical for a circular crosssection or pyramidal for a square cross-section.
Patent GB-1033139-A (GB)
Title: Improvements in or relating to fasteners
Inventor: KUTTLER OTTO
IPC: A47J45/07
Filed: 1964-09-22
Abstract: 1,033,139. Knobs and handles. A. V. RAYMOND [trading as RAYMOND DRUCKNOPFUND METALLWARENFABRIK]. Sept. 22, 1964 [Sept. 23, 1963], No. 38589/64. Heading A4U. [Also in Divisions B4, E2 and F2] A U-shaped fastener 12 for securing a plastic knob 46 on a spindle 50 or other support comprises on one or both limbs 13 inwardly directed part-spherical projections 42, 44 which engage a hole or recess 22 in the spindle 50 and the lower edges of part-spherical projections are sheared from the limbs 13 and bent outwardly to form tongues which grip the knob.
Patent GB-1090700-A (GB)
Title: Device for introducing yarn ends into a knotter
IPC: B65H69/04
Filed: 1966-08-30
Abstract: 1,090,700. Knotter. ELITEX - ZAVODY TEXTILNIHO STROJIRENSTVI OBOROVE REDITELSTVI. Aug. 30, 1966 [Sept. 8, 1965], No. 38594/66. Heading D1C. A winding machine has a knotter 3 and yarn introducing elements 28, 30 provided with notches 33-37 which engage the yarns from a supply cop and bobbin and feed them into the recesses 4, 5 of the knotter. A pair of levers 18, 19 serve to introduce the yarn from a supply cop into the path of the elements 28, 30 to be engaged by the notches 35, 37 for feeding into the knotter 3.
Patent GB-904109-A (GB)
Title: Improvements in or relating to the preparation of cyclic phosphonitrilic chloride polymers
Inventor: PADDOCK NORMAN LOVELACE
IPC: C01B21/097
Filed: 1957-12-12
Abstract: A substantially pure cyclic phosphonitrilic chloride polymer of formula (PNCl2)n, wherein n is 3 - 7 inclusive, is obtained by extracting a solution of a mixture of such polymers in an inert organic solvent with a concentrated strong acid, or with the acid form of an ion exchange resin.  The polymer may be recovered from the acid or resin, or from the organic solvent depending on the different base constants of the polymer.  The mixture of cyclic polymers may be the solution in petroleum ether (b pt. 40 DEG -60 DEG C.) extracted from the mixture of cyclic and linear polymers obtained by reacting PCl5 with NH4Cl.  The solution is extracted with H2SO4.  The polymer may be recovered by diluting the acid and re-extracting with the organic solvent, or selectively extracted with the inert organic liquid.
Patent GB-345618-A (GB)
Title: Improvements relating to the freezing of food products
IPC: A23L3/36
Filed: 1929-12-18
Abstract: 345,618. Cooling animal substances; solidifying liquids by cooling. WHITE, A. E., 5, Quality Court, Chancery Lane, London.-(Frosted Foods Co., Inc. ; Dover, Delaware, U.S.A.) Dec. 18, 1929, No. 38827. [Class 29.] Food products are frozen under pressure between two or more hollow plates cooled internally and adapted to be moved relatively to one another to apply the pressure to the substance between them. The plates 17 may be arranged horizontally in an insulated chamber having charging and discharging doors 12, 14 at opposite sides. The lowest plate 18 is bolted to corner angle frames 16 serving as guides for the other plates, which are connected by lazytong or like members 21, and are movable by a screw 32 engaged by an external hand-wheel 36. Brine or an evaporating refrigerant is circulated in parallel through the plates, which may have internal baffles to provide sinuous paths, from an inlet pipe 24 to an outlet pipe 25, the branch pipes being flexible. The apparatus is particularly adapted for packaged foods, which are consolidated during the treatment. It may also be used for freezing liquid or semi-liquid products, which are placed in impervious paper bags fitted in cartons. The freezing plates are then preferably arranged vertically.
Patent GB-928516-A (GB)
Title: Improvements relating to air or gas blast electric circuit-breakers
Inventor: ROXBURGH ALBERT
IPC: H01H33/14
Filed: 1958-12-02
Abstract: 928,516. Gas-blast switches. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Dec. 1, 1959 [Dec. 2, 1958; March 3, 1959], Nos. 38863/58 and 7382/59. Class 38 (5). An air-blast switch comprises air cylinders 1, 2 parallel to phase A and carrying hollow insulating supports 3... 8 joined in pairs by pin-joints 15, 16, 17, above which the supports are bent so that double-break blast heads 9 ... 14 may be series-connected by pin joints with their metal ends overlapping. Additional rigidity is provided by a strain insulator 24 connected to earth or to one of the receivers. In Fig. 3 the cylinders 25, 26 are transverse to the phase axis A and carry supports 27 ... 34 connected in pairs at 35 . . . 38 and bent above these points to mount double-break blast heads 39 ... 46 in line. Strain insulators 54, 55 are also provided and one blast valve supplies each pair of supports connected to the same point on a cylinder. Another construction may be obtained by using half the arrangement shown in Fig. 3 with a second strain insulator secured to the outer pair of supports, Fig. 4 (not shown). The four blast heads of this construction may be connected in pairs through a fifth head carried by a vertical support centrally mounted on the cylinder between the two support pairs, Fig. 5 (not shown). In a further modification, Fig. 6 (not shown), two additional heads are provided carried by a third pair of supports, similar to the other two and mounted between them, so that each blast valve supplies three supports. In Fig. 7 only one air cylinder 1, three hollow supports 3, 4, 5 and blast heads 9, 11, 13 are used, rigidity being provided by solid supports 69, 70, 71 and the strain insulator 24. The construction of Fig. 3 may also be modified by replacing the hollow supports 28, 30, 32, 34 by solid supports and using only four blast heads, Fig. 8 (not shown). In all the constructions described, each or any of the hollow supports may be suitably divided above the connection with its fellow, or at a similar height for the vertical support of the Fig. 5 construction, to serve two or more blast heads. Two similar arrangements such as that of Fig. 5 or Fig. 6 (not shown), may be combined in a manner similar to that of Fig. 3.
Patent GB-1046606-A (GB)
Title: A convertible type automobile body
IPC: B60J7/20
Filed: 1965-09-13
Abstract: 1,046,606. Vehicle bodies and opening tops. BUDD CO. Sept. 13, 1965 [Oct. 23, 1964], No. 39018/65. Heading B7B. A folding roof 11 is collapsible into a U- shaped pan 34 pivoted on pins 38 accommodated in slots 36 in brackets 35 secured to the wheel arches 18. The rear seat back 23 can be pivoted forwardly on to the seat squab 22 and the whole moved forwardly into a stowed position against the front seat. The pan 34 may then be rotated counter-clockwise and rest on the ledge 31 of the rear seat so leaving the space 33 to the rear of the vehicle unobstructed. When the pan 34 is in this position the pins 38 will be at the rear ends of the slots 36 and the cut-outs 37 allow the pan and folding roof to be removed entirely from the vehicle as a unit.
Patent GB-1328316-A (GB)
Title: Storage battery electrical connections
IPC: H01M50/529
Filed: 1971-08-20
Abstract: 1328316 Welding by pressure GLOBEUNION Inc 20 Aug 1971 [26 Aug 1970] 39143/71 Heading B3R [Also in Division H1] A connection between the cells or between a cell and an external terminal of a storage battery is made through an aperture 38 in a partition or casing wall 14 by resistance pressure welding, two connector lugs 28 being disposed prior to welding either side of the wall and connector means positioned in said aperture to form at least one fused joint with the connector lugs, at least one of the connector lugs having a horizontally extending through passage 36 so that during welding material from the connector means is extruded to fill the passage 36 and form a small external protuberance 48 the presence of which is indicative of a satisfactory weld. The connector means positioned in the aperture 38 may comprise shaped projections 30, 32 integral with the connector lugs, or a separate pin, in which case both lugs have through passages for extrusion of material to form the small protuberance, or a pin integral with and extending from one of the lugs. The electrode 46a, Fig. 5, is formed with a cavity 50 and a vent passage 52 to allow extrusion of weld material and escape of gases to allow formation of the protuberance 48.
Patent GB-1019478-A (GB)
Title: Improvements in or relating to fuel elements for nuclear reactors
Inventor: TRIEULE ANDRE
IPC: G21C3/38
Filed: 1964-09-25
Abstract: 1,019,478. Fuel elements. COMMISSARIAT A L'ENERGIE ATOMIQUE. Sept. 25, 1964 [Sept. 25, 1963], No. 39231/64. Heading G6C. [Also in Division B3] A sheathed nuclear fuel element centred in a surrounding casing is made from a onepiece extrusion comprising the sheath, the centring means and the surrounding casing. The fuel element may also have integrally extruded fins 3. Studs 6 and rings 7, 8 are attached to form end supports, the weight of the uranium fuel 1 being carried on a boss 13 of the lower ring. All parts are preferably made of a magnesium-zirconium alloy, 0À45% b./w. zirconium.
Patent GB-1104371-A (GB)
Title: Improvements in or relating to shock-absorbing mountings
Inventor: MOSS WILLIAM HAROLD
IPC: F16F15/06
Filed: 1961-11-02
Abstract: 1,104,371. Shock absorbing devices; springs. GENERAL ELECTRIC CO. Ltd. 2 Nov., 1962 [2 Nov., 1961], No. 39338/61. Headings F2E and F2S. A shock-absorbing means for mounting one member on another in which one of the two shock paths between the members is rendered less stiff than the other by providing in series with a crushable member a series of resilient members which when the crushable member suffers permanent deformation, maintain rigidity of the mounting. The embodiments described relate to the mounting of a gear-box on the inner wall of an armoured vehicle and are intended to protect the gear-box from shocks resulting from the impact of shells. As seen in Fig. 1, a gear-box flange 3 is mounted on a vehicle wall 5 via a stack of dished spring washers 1 and a mild steel ferrule 2. Shock loading urging the tank wall 5 towards the flange 3 permanently deforms the ferrule 2. Consequent expansion of the stack of dished spring washers 1 takes up shock between the flange and wall, thus maintaining a rigid mounting of the gear-box. In a modification (Fig. 2, not shown) the ferrule is seated in a recess in the vehicle wall in order to accommodate a larger number of washers, and the washers themselves are arranged in three groups, the lowest group being arranged with their concave faces alternately facing upwards and downwards, the middle group with all their concave faces facing downwards, and the upper group with all their faces facing upwards. Also, the mounting is modified to enable it to be assembled with the gear-box already held in position, by extending the recess 7 clear through the flange and inserting a screwthreaded retaining ring into this after assembling the mounting.