baber/WOPTO huggingface dataset:
Patent GB-1298908-A (GB)
Title: Improvements in or relating to a method of tightly connecting copper and light-metal tubes
IPC: B23K31/02
Filed: 1971-06-23
Abstract: 1298908 Welding by pressure INTERATOM INTERNATIONALE ATOMREAKTORBAU GmbH 23 June 1971 [24 June 1970] 29535/71 Heading B3R [Also in Division F2] A method of connecting a copper tube to a light-metal tube, e.g. of Al, comprises introducing the end of the light metal tube into the end of the copper tube while at different temperatures so as to shrink the outer, copper tube on to the inner, light metal tube, and heating an annular zone extending over only part of the length of interengagement of the tubes until a eutectic of copper and light metal of limited thickness is formed. Heating of the annular zone is effected by pushing a molybdenum ring over the outer tube to the desired zone, the ring supporting a high frequency induction coil which heats the ring by induction the ring in turn heating the tubes by conduction. Water cooled sleeves may be placed a small distance on either side of the heating ring to limit the length of the zone in which the eutectic is formed.
Patent GB-947457-A (GB)
Title: Improvements in and connected with circular knitting machines
Inventor: SCHMIDT RICHARD
IPC: D04B15/78
Filed: 1962-08-01
Abstract: 947,457. Knitting-machines. FRANZ MORAT G.m.b.H. Aug. 1, 1962, No. 29602/62. Heading D1C. The pattern wheel of a circular knitting- machine has each jack 2 associated with a pivoted tongue 201a, each jack being selectable for outward movement to needle engagement by the turning of the tongue by an electromagnet 202a when the latter is energized, the tongue then passing outwardly of a cam 8 to be moved further outwardly thereby, thus extending the jack. The tongues of unselected jacks are held by an electromagnet 16a to pass along the edge 8a of the cam 8. Before the jacks have reached the selecting position 10 again they are pushed back into an operative position by a stationary cam as described in Specification 871, 864.
Patent GB-434631-A (GB)
Title: Improvements in or relating to hot-bulb internal combustion engines
IPC: F02B9/00
Filed: 1934-10-16
Abstract: 434,631. Hot-bulb engines. BAGNULO, A., 54, Rue Armand Sylvestre, Courbevoie, Seine, France. Oct. 16, 1934, Nos. 29621 and 29622. Convention dates, Oct. 18, 1933 and June 18, 1934. [Class 7 (iii)] Liquid fuel, which is supplied in a finely divided state with or without a small amount of air, and drawn by engine suction past a valve H into a hot bulb G, is heated prior to admission; main air is drawn through a valve D and the combustible mixture thus formed is ignited by a sparking plug V. A carburetter M comprises at least two float chambers for different fuels, the selection being regulated by a cock K which may be controlled in conjunction with a main air throttle valve E ; alternatively, means for varying the lift of the valve H is controlled conjointly with the valve E. A further self-closing valve placed in front of the valve E closes when great acceleration is required. The carburetter comprises concentric tubes extending into the fuel in each float chamber and fed through constricted orifices, the outer tube being combined with a fuel well; compensation is thus effected for sudden acceleration and for tilting of the carburetter. In a modification, applied to a multicylinder engine, the passages I are fed by distributing passages formed in a plate integral with sides of the hot bulbs, but heat-insulated from the cylinder head ; interconnected throttling means may be provided in the distributing passages which may contain nickel filings or other catalysing or filtering material.
Patent GB-1155852-A (GB)
Title: Improvements In Reference Devices For Tools Of Cutting, Stamping And Swaging Presses
IPC: B21D37/20
Filed: 1966-07-01
Abstract: 1,155,852. Stamping; mounting dies. REGIE NATIONALE DES USINES RENAULT. 1 July, 1966 [6 July, 1965], No. 29757/66. Headings B3H, B3Q and B3W. [Also in Division B5] A press tool reference device includes a layer 1 of a mixture of resin and glass fibres having a predetermined reference surface 2 for use with cutting, stamping and swaging presses, a support structure 4 of plastics material with one end contoured to fit against the layer face 3 remote from the reference surface, the structure and layer being bonded together by coating them with a similar mixture, and attaching fastening blocks 7 to the structure by a further coating of the mixture. The support structure 4 may be of expanded polystyrene and may be solid or comprised of separate walls 5, 6 glued together; the blocks 7 may be of fabric impregnated with phenolic resin. The mixture is sprayed on to a pattern plate surface, not shown, to form the layer 1, and when all the parts are firmly bonded together, the layer is stripped from the pattern plate surface.
Patent GB-262122-A (GB)
Title: Means for dividing a continuously fed tube or rod of glass
IPC: C03B33/06
Filed: 1926-11-25
Abstract: 262,122. Soc. due Verre Sili-ChromÚ. Nov. 26, 1925, [Convention date]. Cutting glass.-For severing a continuously-fed rod or tube of glass, a striker M pivoted to a rotating member L co-operates with a bed E<2>. The striker is retracted by a cam J<1> and actuated by a spring 0. The tube is fed by rolls B<1>. In modifications, projections on rotated discs are substituted for the striker.
Patent GB-1294765-A (GB)
Title: Recessed screw
Inventor: DREGER GEOFFREY
IPC: F16B23/00
Filed: 1970-06-19
Abstract: 1294765 Heading P L ROBERTSON MFG CO Ltd 19 June 1970 [23 June 1969] 29877/70 Heading B3H [Also in Division F2] A screw has a recess which is centered on and symmetrical with the longitudinal axis of the screw and which in plan view presents eight symmetrically disposed corners at 45 degrees to each other with any four alternate corners lying on the corners of a square, the other four corners lying on the corners of another square disposed at 45 degrees to the first square. A square cross-section driving tool is adapted to engage the corresponding corners of the recess in order to turn the screw. The side walls 2, 3 of the recess are inclined inwardly towards the bottom of the recess at an angle of 3-3À5 degrees relative to the screw axis, and the bottom of the recess may be conical having an angle of 50-56 degrees relative to a perpendicular to the screw axis. The upper edges of the wall portions may be chamfered. The recess may be formed in flat head screws using the punch 15 shown in Fig. 1, or in round headed screws by using a punch (20) (Fig. 4, not shown) shaped to engage the round head.
Patent GB-465113-A (GB)
Title: Improvements in grid controlled vapour arc converting apparatus
IPC: H02M1/04
Filed: 1935-10-29
Abstract: 465,113. Converting ; dynamos. ENGLISH ELECTRIC CO., Ltd. (Siemens- Schuckertwerke Akt.-Ges.) Oct. 29, 1935, No. 29891. [Classes 35 and 38 (ii)] Relates to rectifiers, inverters, and frequency changers comprising grid-controlled vapour arc discharge devices, and consists in applying to the grids alternating potentials which rise steeply to an ignition permitting value, remain positive for the whole of the conducting period of the corresponding anodes, and thereafter fall gradually, either smoothly or in steps, to the blocking value. Fig. 6 shows a rotary distributer for a three phase grid system G1, G2, G3 in which the grids are permanently connected to the negative pole of a D.C. source 1 through resistances 3, but are periodically connected direct to the positive pole by the rotary contact device 9 which is designed so that, after the anodes cease to conduct, resistance is inserted in steps before the connection to the positive pole is broken thus producing grid potentials of the wave form shown in Fig. 5. Alternatively, a suitable wave form for the grid potentials may be produced by superposing a sinusoidal alternating voltage on a voltage of rectangular wave form produced by a rotary commutator switching arrangement. Fig. 8 shows an alternator designed to produce the required wave form in armature coils G1, G2, G3 connected in the grid circuits. The field system comprises a pair of polepieces 45 of short span-surrounded by short-circuited conducting rings, and a pair of polepieces 46 of wide span separated from the armature by an air gap which is small at the centre and increases towards the ends. This arrangement produces a flux variation in the armature of the form #, Fig. 9, which results in the generation of potentials of the form eg. In a modified form of generator, Fig. 10 (not shown) a similar effect is obtained by a field system which comprises a magnet bent round the axis of rotation of the machine to form an incomplete ring, its poles being separated by a small gap. Fig. 11 shows a static arrangement for generating the required potentials. It consists of a relaxation oscillation generator comprising D.C. source 62, resistance 64, condenser 61 and discharge tube 60 producing saw-tooth potentials modified by a sinusoidal voltage injected at 63.
Patent GB-1454783-A (GB)
Title: Induction heating  equipment
IPC: H05B6/10
Filed: 1973-06-23
Abstract: 1454783 Induction heating device ROTARY ELECTRICAL CO Ltd 9 May 1974 [23 June 1973] 29931/73 Heading H5H An induction heater for heating metallic rings, e.g. bearings 8 of varying sizes, comprises a body 1 having a support surface 3 for the metallic rings, a first C-shaped magnetic core 5 carrying an energizing winding 6 mounted in the body with its ends accessible from the surface 3 for co-operation with a second C- shaped magnetic core extension member 4 which is movable to enable a ring to be introduced into the closed magnetic circuit formed by members 4 and 5. As shown, two magnetic circuits 4, 5 are provided which are energized by a common energizing winding 6 and individual trimming windings 7. Preferably each magnetic core extension member 4 is pivoted to its member 5 or to the body 1 so that it may be swung about a horizontal axis to allow the introduction of a ring to be heated . Whilst each magnetic circuit may accommodate different sizes of rings, the use of a plurality of magnetic members 5 with a common energizing winding 6 enables the heating to be accomplished within one or more closed magnetic circuits. The surface 3 is of heat resistant insulating plastics. The body can be filled with potting compound.
Patent GB-1372134-A (GB)
Title: Clutch
IPC: F16D13/64
Filed: 1972-06-27
Abstract: 1372134 Mounting clutch plates AISIN SEIKI KK 27 June 1972 [29 June 1971] 30017/72 Heading F2U  A clutch plate 15 (e.g. with friction linings 24 mounted thereon by leaf springs 22) is mounted on a (e.g. splined 11) hub 10 with a flange 12 by at least one coil spring 20 in apertures 15a, 12a of equal circumferential extent in the plate and flange, and by at least one elastomeric spring 21 in apertures 15b, 12b of unequal circumferential  extent in the plate and flange (either may be larger). In a transmission the springs 21 may be arranged to be effective while torque is being supplied by the engine, but not during torque reversal. Friction damping by a spring 16 may be provided.
Patent GB-683539-A (GB)
Title: Improvements in clips for carpets and the like
IPC: A47G27/06
Filed: 1949-11-24
Abstract: 683,539. Stair-carpet fasteners. DURA CO. (CHEADLE), Ltd., WILLIAMS, H., and WHEAT, H. Nov. 23, 1950 [Nov. 24, 1949], No. 30116/49. Class 52(v) [Also in Group XXV] A stair-carpet fastener comprises an L- shaped base member 7 with an upstanding part 3 having ears 4 connected to similar ears on an angular clamping member 5 by pivot pins 6. The member 5 has a clamping arm 1 formed with projections 8 which in the vertical position co-operate with a rib 9 on the base member to give a secure clamping action. A lever arm 11 with inturned edge portions 12 is slidable on the other arm 10 of the clamping member and in the clamping position rests against the upstanding vertical portion 3 of the base member to lock the clamping member in position. A tongue 14 on the clamping member prevents complete withdrawal of the locking arm 11.
Patent GB-519490-A (GB)
Title: Improvements in thermionic amplifiers
IPC: H03F1/54
Filed: 1938-10-24
Abstract: 519,490. Valve amplifying circuits. GENERAL ELECTRIC CO., Ltd., and LE ROSSIGNOL, R. Oct. 24, 1938, No. 30683. [Classes 39 (i) and 40 (v)] A pentode amplifier, for a frequency of 3-10 Mc. and having an anode voltage of about 3,000, is arranged so that the potential of the suppressor grid 12 varies in phase with that of the anode 7, thereby reducing the potential difference between the electrodes and allowing the use of a higher anode voltage without the occurrence of flash arcs. The grid 12 is connected to the same bias Eg2 as the screen grid 5, through a choke 13 which has substantially infinite impedance at the operating frequency, and is also connected to the cathode 1, via earth, through a variable condenser 14.
Patent GB-832480-A (GB)
Title: Tracking system
Inventor: OSBORNE WILLIAM EDGAR
IPC: F41G7/22
Filed: 1955-10-26
Abstract: 832,480. Gyroscopic apparatus. AEROJET-GENERAL CORPORATION. Oct. 26. 1955, No. 30686/55. Class 97(3) [Also in Groups XXXV and XL(b)] In a target seeker a free gyro is mounted on a universal ball joint and driven by air and .bucket scoops, Figs. 3, 4 (not shown). When the gyro is "off target" as detected by mirror 32 mounted on the rotor and photo-cell 37 it is precessed by pulse energization of a coil 45 co-operating with a permanent magnet 26 mounted on the gyro-rotor (see Group XL(b)) and Figs. 5-11 (not shown). The gyro may be locked by energizing a solenoid 66 co-operating with a magnetic mass 68 on sleeve 64 to urge it forward so that a neck 65 on the forward end of the sleeve engages the rear seat of the ball joint.
Patent GB-1388190-A (GB)
Title: Multi-directional sound system
IPC: H04S3/02
Filed: 1972-06-30
Abstract: 1388190 Quadraphonic systems SANSUI ELECTRIC CO Ltd 30 June 1972 [2 July 1971] 30697/72 Heading H4R An encoding system for encoding at least first, second, third and fourth audio input signals into first and second channel signals is such that, where the four audio input signals are assumed to have the same frequency and phase, in each of the first and second channel signals the first audio input signal leads the second audio input signal by substantially 45 degrees, in the first channel signal the first and second audio input signals lag from the fourth and third audio input signals by substantially 90 degrees, respectively, and in the second channel signal the first and second audio input signals lead the fourth and third audio input signals by substantially 90 degrees, respectively. The system is ulitized for manufacturing matrix four channel discs, in FM stereo broadcasting and in tape recording. Encoder.-Input signals are applied through terminals 1, 2, 3, 4 (Fig. 7) to phase shifters 7, 8, 9, 10. Symbol # represents an angular quantity for providing easy phase shift operation. Phase shifter 7 shifts the phase of signal FL by angle # + 22¢ degrees. A resistor R 1  multiplies the output of phase shifter 7 by 0À92 (i.e. cos 22¢ degrees) and supplies it to L terminal 5 while a resistor R5 multiplies the output of phase shifter 7 by 0À38 (i.e. sin 22¢ degrees) and applies it to R terminal 6. Phase shifter 8 shifts the phase of signal RL by angle 4-67¢ degrees. Resistor R 2  multiplies the output by cos 22¢ degrees while resistor R 6  in combination with inverter 11 multiplies the output by -sin 22¢ degrees. In this manner terminals 5 and 6 are provided with signal values from signals FL, RL, RR, FR as required in the preceding paragraph. Decoder.-Signal L at terminal 15 (Fig. 8) is multiplied by cos 22¢ (i.e. 0À92) by resistor R 16  Signal R is multiplied by sin 22¢ degrees (i.e. 0À38) by resistor R 19 . The output signals from resistors R 16 , R 19  are mixed and the phase of the mixed signals is phase shifted by a reference angle -22¢ degrees in phase shifter 21 thus supplying an output signal FL substantially corresponding to FL at terminal 17. Resistor R 16  operates to multiply signal L with the sine of an angle equal to ¢ the positional angle 135 degrees of FL signal source whereas resistor R 19  multiplies the signal R with the cosine of an angle equal to one half of the positional angle of FL signal source. The other resistor R 17  to R 18  and R 18  to R 23  act in a corresponding manner to reconstitute output signals R<SP>1</SP>L, R<SP>1</SP>R and F<SP>1</SP>R. Phase shifters 21, 22, 23, 24 cancel the phase shift provided by the encoder phase shifters. Alternatively the angles of phase shifts # and 3# on the decoder side are 0 degrees and 90 degrees respectively. An alternative decoder (Fig. 9) has phase splitters. 26, 27, a resistance network and phase shifters 21 to 24.
Patent GB-776882-A (GB)
Title: Improvements in arrangement for storing objects of any type, more particularly a multi-storey garage
IPC: E04H6/20
Filed: 1954-10-25
Abstract: 776,882. Mechanical garages and storage systems. ROTH, A. Oct. 25, 1954 [Oct. 31, 1953; Dec. 4, 1953; April 15, 1954], No. 30701/54. Class 78 (4). [Also in Group X] Stored automobiles or other articles are moved vertically through columns 1, 2, Fig. 1, of storage compartments to fill gaps left by the removal of automobiles or articles into an adjacent shaft 3 in which they are conveyed for removal from store. As illustrated, trolleys 18 carrying automobiles normally rest on rails 22, Fig. 3, connected by links 23 and plungers 28 to the stanchions 25 forming the compartments and pressed toward the sides of the compartments against the bias of springs 26 by the trolleys 18 as they are moved upwardly. The trolleys are moved upwardly by members 20 hinged to members 48 (Fig. 8, not shown) drawn up guides 21 by ropes 17. After the members 20 have been used to raise a desired trolley they are lowered to engage the next trolley to be raised, retracting against the bias of springs (not shown) as they pass down past each intermediate trolley. When the members 20 are to be returned to the tops of the guides 21 they are first lowered to the lower ends of the guides where suitably shaped guiding vanes retract them within the guides 21 where they are held until they escape at the upper end of the guides. The trolleys are lowered from their storage compartments by a lift 41, Fig. 6, fitted with a bridge 44 for bridging the gap between the lift and the compartment and with means 45 for moving the trolley 18 from the compartment into the lift. The lift lowers the trolleys to a conveyer 13, Fig. 1, by which they are conveyed to an exit ramp 33 by which automobiles may pass down to the level of the entrance compartment 4. The trolleys 18 are normally stored at 31 below the compartment. In an alternative construction, Fig. 4 (not shown), one of the sets of columns 1, 2 and the conveyer 13 are omitted and the ramp 33 extends the whole length of the set of compartments, vehicles being driven under cut-away portions of the ramp to reach the entrance compartments 4. Gangways 32, Fig. 1, within the storage columns permit access to the vehicle while in the store.
Patent GB-464144-A (GB)
Title: Improvements in retractable landing gear and the like for aircraft
IPC: B64C25/22
Filed: 1935-11-06
Abstract: 464,144. Hydraulic transmission of power. BRISTOL AEROPLANE CO., Ltd., and PONTING, R. Nov. 6, 1935, No. 30733. [Class 69 (ii)] [Also in Group XXXIII] In a retractable landing - gear of the kind comprising a collapsable linkage, means to lock the linkage in its extended and retracted position, and actuating mechanism for opening and collapsing the linkage, a relay is provided between the locking means and the actuating mechanism whereby the actuating mechanism is rendered inoperative when the locking means is in engagement. In one form as applied to a gear such as described in Specification 463,807, [Group XXXIII], a folding strut 13, 14 is locked in extended position by a catch 21 pivoted to member 14 of the strut and spring-urged into engagement with an abutment 23 on leg member 13. Locking in theretracted position is effected by a similar catch 38 adapted to engage an extension 29 of wheel-carrying leg 11. Catches 21, 28 are adapted to be released by admission of fluid pressure into cylinders 27 and 32 respectively. The supply of fluid to these cylinders and to the main jack cylinder 19 is by the circuit shown diagrammatically in Fig. 3. A two-way valve 34 controlled by the pilot controls four ports as follows : a port 35 to which oil under pressure is admitted through a pipe 36 ; a port 37 connected by a pipe 88 to the spaces above piston 26 in cylinder 27 ; a port 38 leading through a pipe 39 to a drain ; and a port 40 which is connected by a pipe 41 to the underside of piston 31 in cylinder 32. The top end of cylinder 32 and the bottom end of cylinder 27 are connected by pipes 42 and 43 to a drain. Cylinder 27 is formed between its ends with a port 44 connected by a pipe 45 to the underside of piston 46 of jack 19. Cylinder 32 is similarly formed with a port 47 which is connected by a pipe 48 to the upper face of the jack piston. The arrangement is such that before pressure fluid can pass to jack 19, unlocking movement of the appropriate lock controlling piston must take place. In a modification, Fig. 4, locking members 51, 52 are actuated by a piston rod 53 formed with three piston portions 54, 55, 56 working in a cylinder 57. Pressure is applied to the outer faces of pistons 54 or 56 according to whether catch 51 or catch 52 is to be unlatched, the three pistons co-operating to control the supply of pressure fluid to jack 19. Catches 51, 52 are spring urged to locking position and are coupled with lost motion to piston rod 53 in such manner as to permit of their automatic engagement with abutments formed on leg 11. Where two legs or two folding struts are provided for each wheel, the locking means may be duplicated.
Patent GB-787052-A (GB)
Title: Moulds for casting metals and alloys
Inventor: EMBLEM HAROLD GARTON
IPC: B22C3/00
Filed: 1954-10-25
Abstract: A shell mould for precision casting is made by applying to an expendable pattern a coating of finely-divided refractory material suspended in a liquid containing ammonia and sodium silicate (or potassium silicate or a mixture of the two silicates) and hardening the coating by applying carbon dioxide.  The carbon dioxide reacts with the silicate to give silica and sodium (or potassium) carbonate, and may be applied by blowing CO2 gas onto the coating, or by suspending the coated pattern near evaporating solid CO2, or by a combination of both of these methods.  The liquid contains sufficient water to prevent precipitation of the silicate by dehydration.  The function of the ammonia is to form a uniform strong gel.  The silicate may be in solution in water, and the solution may contain (a) an organic solvent miscible with water, e.g. ethyl alcohol or glycerol, as a diluent, and (b) wetting and/or de-frothing agents. The coating process may be performed more than once, each coating being hardened by carbon dioxide before the next coating is applied. Each coating may be dusted with refractory material prior to hardening.  Before the initial coating is applied the pattern may be coated with refractory material.  For castings having intricate surface details a preliminary coating of silica aquasol-refractory slurry may be applied to the pattern.  The pattern may be of wax, tin-bismuth, alloy, polystyrene or cellulose acetate.  The coating may be applied by spraying, dipping or painting.  The pattern may include a preformed refractory core to make a hollow in the metal casting, or the core may be built up as the pattern is coated. The shell mould may be hardened, before or after removal of the pattern by melting or dissolving out, by immersion in hydrolysed ethyl silicate solution.  The refractory material may be zircon, zirconia, sillimanite, mullite, alumina, or fireclay grog.  The shell mould is supported in a refractory material, e.g. sillimanite powder or fireclay grog and fired; or the mould may be invested in an aqueous slurry containing fireclay grog having an alumina content of 44 per cent acid sodium silicate solution and hexamine (gellation accelerator) dried and fired.  Specifications 650,532 and 678,035 are referred to.