baber/WOPTO huggingface dataset:
Patent GB-1435331-A (GB)
Title: Stabilised dc power supply device
IPC: H02M5/253
Filed: 1973-07-02
Abstract: 1435331 Converting LEGRAND SA 2 July 1973 [3 July 1972] 30873/73 Heading H2F A low voltage D.C. is obtained from a switching device 17 in an A.C. circuit by connecting a constant voltage device 26 in series with the switching device 17 so as to develop a first voltage when the switching device 17 is conductive and including a further circuit connected across the switching device 17 for providing a second voltage when the switching device 17 is non-conductive, the low D.C. voltage being derived from the first and second voltages. The invention is applicable to deriving a low voltage D.C. for use in the control circuit 16 of a triac 17 arranged to switch a lighting load 14 from an A.C. source 12, e.g. by means of a photoconductor (not shown) connected to the gate 25. When the triac 17 is non-conductive the supply voltage 12 is reduced by capacitor 22 and resistor 23 and is rectified by diode 27, smoothed by capacitor 29 and regulated by Zener diode 30. When the triac 17 is conductive, the inverse diodes 26 will provide a low stabilized A.C. which is stepped up by transformer 20, rectified at 28 and fed to the smoothing and control circuit 29, 16. In Fig. 3 (not shown) diodes 24 and 28 are omitted and junction A is connected to point M. In Fig. 5 (not shown) diodes 26 are connected on the source side of the triac 17 and feed the primary of a doublewound transformer having a centretapped bi-phase halfwave pair of rectifiers for use when the triac 17 is conductive and having a circuit similar to that shown in Fig. 2 for use when the triac is non-conductive. Modifications.-The triac 17 may be replaced by an electromagnetic relay or a thyristor. Diodes 26 may be replaced by thyristors or triacs. The transformer 20 may be replaced by a voltage multiplier.
Patent GB-225707-A (GB)
Title: Improvements in gutter nozzles for connecting roof gutters to rain water pipes
IPC: E04D13/04
Filed: 1923-12-10
Abstract: 225,707. Higginbotham, F. Dec. 10, 1923. Metal pipes.-A gutter nozzle is formed with a spigot portion 1 for engaging the fall pipe, and an upper portion 2 which is not circular in section and is joined by a tapering portion 3 to the spigot portion. The upper portion is provided with a flange for attachment to a wooden gutter 13, or with a portion 15 of a metal gutter; it is slotted at 6 to receive supporting arms on a grating 7. This grating has a central aperture other than circular to prevent it from being blocked by a ball or similar round object, and has also radiating arms some of which 9 support the grating on a seat, while others are shortened and bent and sharpened to points 10 to prevent the passage of rats upwards along the pipe. The upper nozzle portion is also provided with a front aperture 5, through which water may flow away from the house in the event of the fall pipe becoming choked.
Patent GB-1496728-A (GB)
Title: Coagulative recovery of polysulphone resins from solution thereof
IPC: C08G75/20
Filed: 1975-07-24
Abstract: 1496728 Recovering polysulphone resins UNION CARBIDE CORP 24 July 1975 [25 July 1974] 31031/75 Heading C3R A method for the coagulative recovery of normally solid, polyarylene polyether polysulfone thermoplastic resin from a solution thereof comprises: (A) dispersing a solution of from 5 to 40% by weight solids content of normally solid, polyarylene polyether polysulfone thermoplastic resin dissolved in an organic solvent having a solubility parameter, S, of from 7 to 11 with a fractional polarity of from 0À04 to 0À4 in a continuous carrier liquid phase (immiscible with the organic solvent) as discrete droplets having a Sauter mean diameter of from 50 to 250 microns; (B) contacting the dispersion of (A) with a liquid aliphatic hydrocarbon having from 5 to 10 carbon atoms and a solubility parameter, S, of from 7 to 8 in a turbulent shear field so that each discrete droplet of resin solution coalesces with and is surrounded by the aliphatic hydrocarbon; (C) continuing agitation of the contacted dispersion until sufficient organic solvent has diffused out of the resin droplets and sufficient aliphatic hydrocarbon has diffused into the resin droplets whereby porous, non-agglomerated polyarylene polyether polysulfone resin particles are obtained; (D) isolating from the continuous carrier liquid phase resin particles containing a mixture of organic solvent and aliphatic hydrocarbon; (E) removing organic solvent and aliphatic hydrocarbon not trapped within the pores of the resin particles from the resin particles; and (F) extracting residual organic solvent from the resin particles with an aliphatic hydrocarbon having from 5 to 10 carbon atoms and a solubility parameter, #, of from 7 to 8. In examples a polyether polysulfone resin dissolved in chlorobenzene is dispersed as discrete droplets in water, n-hexane in one instance and a mixture of C 9 -C 10  aliphatic hydrocarbons in another, are added to form coagulated particles, the particles are separated, washed with more liquid hydrocarbon and dried.
Patent GB-759345-A (GB)
Title: An improved pump
Inventor: LAUTOUR FRANCIS DE
IPC: F04F7/00
Filed: 1954-10-27
Abstract: 759,345. Raising liquids. EMDOW UTILI. TIES, Ltd. Oct. 27, 1954, No. 31073/54. Class 102(2). [Also in Group XXIX] A pump comprises a cylinder 1 that is reciprocated axially and has an inlet opening 3 that is closed by a ball 6 that projects below the end of the cylinder ; an outlet 5 is provided at the top of the cylinder. A spring 12 may be provided to form a resilient stop for the ball 6 and assist to push it onto its seat. Fig. 4 illustrates one way of reciprocating the cylinder in which the pipe 5 is attached to a blade spring 14 oscillated by a cam or eccentric 16. The pump may be embodied in a siphon for priming purposes and once the action is started, the pump may be rested on the base of the liquid container whereby the valve 6 is maintained open.
Patent GB-932549-A (GB)
Title: Improvements in or relating to voltage regulating arrangements for reducing voltage flicker in an electric supply network
Inventor: FRIEDLANDER ERICH SIEGFRIED
IPC: H02M5/12
Filed: 1960-09-09
Abstract: 932,549. Excessive voltage protection; transformers. GENERAL ELECTRIC CO. Ltd. Sept. 4, 1961 [Sept. 9, 1960; Sept. 21, 1960; Oct. 11, 1960], Nos. 31150/60, 32428/60 and 34792/60. Classes 38 (2) and 38 (4). An apparatus for absorbing voltage surges caused by an A.C. fluctuating load such as an arc furnace, comprises a transformer 4, 5, and a saturable reactor coupled to the load so that a voltage surge saturates the reactor, the current flow in which prevents a corresponding surge on the main supply 2. In Fig. 1, the reactor 7 is connected to the load through tapped inductors 6. A number of other arrangements are described in the Specification.
Patent GB-446428-A (GB)
Title: Mechanically propelled conveyance of the tank or endless track type for amusement purposes
IPC: A63H17/26
Filed: 1934-10-31
Abstract: 446,428. Endless - track vehicles. ST. GEORGE, S., 12, Bury Street, Bloomsbury, and MEAGHER, W. D., 2, Longford Street, Euston, both in London. Oct. 31, 1934, No. 31198. [Classes 79 (i) and 79 (ii)] [See also Group XV] An amusement vehicle runs on endless tracks and may have the appearance of a " tank," and is provided with an engine or electric motor 5 which drives both tracks, means being provided for braking or de-clutching the drive to either track for steering purposes. In the construction shown, the engine 5 drives the tracks through a clutch 10 controlled by a pedal 11, bevel gearing 8, and clutches 13, 14 controlled by the steering wheel 12, so that when the steering wheel is rotated one or other clutch is disengaged and the vehicle is steered. In a modification, the clutches may be spring- controlled and the steering wheel when rotated applies a brake to the appropriate track. A bumper bar 2 is provided. Each track 4 is a rubber or other flexible band and passes over three wheels or rollers 3.
Patent GB-175031-A (GB)
Title: Improvements relating to back wind shields for motor cars
IPC: B60J1/00
Filed: 1920-11-05
Abstract: 175,031. Denby, W. H. Nov. 5, 1920. Wind-screens, - A foldable and collapsable wind-screen for the rear seats of a motor-car comprises two movable links arranged one above the other and pivotally connected to a movable member to which the screen is pivotally connected, the links being arranged to be extended until the upper link becomes horizontal and the under link more or less vertical and the movable member connected with the screen disposed against the fixed back member. The fixed back member a, attached to the rear side of the front seat, has two links b<1>, b<2> pivoted to it, one above the other, which carry a movable member c, to the end e of which the wind-screen d is pivoted. In the extended position of the links, the end f of the member c abuts against the fixed member a. To collapse the screen, it is turned down on the member c and the end f of the same member pulled downwardly until the member b<1> passes its horizontal position; the screen will then pack flat against the back of the front seat.
Patent GB-859833-A (GB)
Title: Improvements in magnetic recording discs
IPC: G11B5/60
Filed: 1957-10-07
Abstract: 859,833. Magnetic record discs. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 7, 1957 [Oct. 9, 1956], No. 31335/57. Class 40 (2). A disc record for magnetic recording comprises a non-magnetic plane base 31, 32 to which is attached an annulus 36 of non- magnetic material. The annulus, which is on the same side as and has the same thickness as the layer of magnetizable material is used as a screed in levelling the magnetizable layer after it has been applied. A second annulus joined to the first by radial spokes 39 may be provided. A double-sided record is made by joining two discs back-to-back with an adhesive as shown in Fig. 4. The record is used in conjunction with a magnetic head constructed and mounted so that it is separated from the disc by 'a film of air when the disc is running. The purpose of the outer annulus is to provide a wear-resistant surface on which the magnetic head can run while the disc is reaching the operating speed and to reduce the friction during this time the surface of the annulus and spokes may be plated and polished, lubricated, or made of a non-magnetic material having a low coefficient of friction. Specifications 820,622 and 830,900 are referred to.
Patent GB-696756-A (GB)
Title: Improvements in or relating to ignition systems for gas turbine engines
Inventor: JAMISON ROBIN RALPH
IPC: F02C7/264
Filed: 1949-12-06
Abstract: 696,756. Generating combustion products under pressure. ROLLS-ROYCE, Ltd. March 2. 1951 [Dec. 6, 1949], No. 31340/49. Class 51(i) [Also in Groups XI and XXVI] A catalytic element is provided in the additional combustion equipment of  a  gas turbine engine for igniting fuel introduced into the equipment in the region of said element. In after burner apparatus for a jet propulsion plant pilot fuel is supplied through. a conduit 44, Fig. 2, to be discharged from a perforated member 45 and carried downstream into a conical or cylindrical cowl 38 into which some of the fuel stream enters by means of the turbulence caused and is there ignited by a catalytic gauze cylinder 41, e.g. of platinum. The burning pilot fuel ignites the main fuel supplied through a pipe 36 and radial discharge pipes (not shown). The pilot fuel may, alternatively, be injected directly into the cowl 38. The Provisional Specification describes a means of catalytically igniting fuel introduced into the main combustion equipment of a gas turbine engine, and comprising a catalytic element arranged to ignite a gas-air jet which in turn ignites the main fuel which is supplied through atomizing injectors.-
Patent GB-470952-A (GB)
Title: Improvements in and relating to methods of making and repairing furnace roofs
IPC: F27D1/16
Filed: 1936-11-16
Abstract: 470,952. Furnace roofs. HERAEUSVACUUMSCHMELZE AKT.-GES. Nov. 16, 1936, No. 31357. Convention date, Nov. 14, 1935. [Class 51 (ii)] The method of making and repairing furnace hearths described in Specification 226,801, [Class 51 (ii)], is modified for the making and repairing of furnace roofs. A metal mould or template is fitted in position and covered with a layer of dry, sandy refractory material, after which the furnace is heated so as to sinter the refractory material before the template fuses. Cracks are closed on the side facing the hearth with sheet-metal, and then filled in with a granular refractory. Powdered glass or borax may be added to the refractory to reduce its melting point.
Patent GB-190619-A (GB)
Title: Improvements in and relating to means for coupling alternating current generators in parallel
IPC: H02J3/42
Filed: 1921-11-23
Abstract: 190,619. Meijer, N. E. G. Nov. 23, 1921. Switches, actuating, contrifugal.- An alternator is connected up automatically to the bus-bars of another alternator when synchronism has been obtained by an apparatus comprising two synchronous motors connected respectively to the alternators, rotary switch elements driven by these motors, a time-lay relay, and an electromagnetic switch controlled by the conjoint action of the preceding apparatus. The motor 1 drives a shaft 3, Fig. 2, carrying a disc 4 provided with a flange 5. The disc 4 carries a leaf spring 6 adapted to engage at a predetermined speed an adjustable contact 9 mounted on a contact 8 carried by the disc 4. The motor 2 drives shaft 11 carrying a disc 10 upon which is mounted a spring- pressed contact 12 wiping over the disc 4 and adapted to engage the contact 8. The disc 10 carries contacts 14, 15, Figs. 1 and 3, connected to the negative lead of the supply A through slip ring 11<b> and lamp L and slip ring 11<c> and lamp L<1> respectively. A contact member 16, connected to the positive lead of the supply A through a slip ring 11<a>, is loosely mounted on the shaft 11 and carries a spring- pressed plunger 18 provided with a leather shoe 19 engaging the flange 5 of the disc 4. The shaft 11 is adapted to drive a notched disc 27 through a clutch 25 controlled by a magnet 26. The disc 27 is moved against the action of a spring 31 and its initial position is adjusted by a stop 29.
Patent GB-1521406-A (GB)
Title: Bottle colour identification apparatus
IPC: G01J3/51
Filed: 1976-07-28
Abstract: 1521406 Colour identification ERWIN SICK GmbH OPTIK ELEKTRONIK 28 July 1976 [29 July 1975] 31446/76 Heading G1A Objects each having one of three colours (e.g. brown, green and white bottles) are identified by apparatus Fig. 1 providing a light beam 27 and including two photo-cells 9a, 9b, filters 7a, 7b having separated optical passbands, and means for determining whether a signal from one photo-cell is greater than, equal to, or less than, that from the other. A collimated beam 27 no wider than a bottleneck, when transmitted by the bottleneck, is split by a partial mirror 6 and directed through respective green 7a, and brown 7b, interference filters to photo-cells 9a, 9b. A circuit Fig. 4 processes and combines the detector signals to provide an output from one of three gates 20-22 when the bottle is brown, white and green respectively, each output triggering one of three flip-flops 23-25 when enabled to do so by a presence signal derived from detectors 11a- 11c. The flip-flop outputs, which persist until the next bottle is detected, may be used to control a sorting station. The presence of a bottle at the correct position is determined by three detectors 11a-11c, Fig. 2, so arranged that only the middle one is illuminated when the bottle neck 4, in the middle of the beam 27, reduces the beam width by refraction.
Patent GB-1180885-A (GB)
Title: Magnetic Tape Recorders.
IPC: G11C13/04
Filed: 1968-07-02
Abstract: 1,180,885. Recording and playback. INTERNATIONAL BUSINESS MACHINES CORP. 2 July, 1968 [17 July, 1967], No. 31503/68. Heading G5R. A helical-scan tape recorder has means for clamping sections of the tape independently of one another and for buffering such sections from one another which are operated in synchronism with the rotation of the magnetic head so that any section of the tape being transduced is clamped and each unclamped section is advanced. As shown, a timing plate 81 rotating with the head 11 connects a vacuum pump 51 in sequence to the input and output sections of a vacuum capstan 35, brakes B1 to B4, and buffer cavities 17, 43, so that semicircular sections 21, 22 of tape 20 are clamped and advanced in turn. A light source 61 rotating with the head 11 is detected by a photo-electric device 62 to control the head drive motor 60a in conjunction with synchronizing signals 63a picked up from the tape 20 by a fixed head 64. To give a still television picture, the tape may be held stationary so that the head 11 repeatedly scans the same track.
Patent GB-767549-A (GB)
Title: Improvements in and relating to pin and socket electric couplings
IPC: H01R13/625
Filed: 1954-11-01
Abstract: 767,549. Two-part couplings. NAAMLOOZE VENNOOTSCHAP HOLLANDSCHE DRAAD-EN KABELFABRIEK. Nov. 1, 1954 [Nov. 4, 1953], No. 31537/54. Class 38 (1). Asymmetrically-spaced locking and locating projections 8, 9 and 18, 19 are provided on the metal casings 7, 17 of plug and socket parts, respectively, and the contacts are asymmetrically embedded in rubber bodies 1, 4 vulcanized to the cable insulation, the arrangement being such that as the coupling parts are engaged and while pins 3 are inserted in socket guide sleeves, cam faces 11 and 25 on the projections engage, causing the parts to twist relative to one another and the elastic bodies to deform, until faces 11a, 25a parallel to the connector axis are in register. The pins now engage in the socket contacts proper and the parts are further pushed together axially until hooks 20 are in register with recesses 10 in the projections 8, 9 when the elastic energy stored in bodies 1, 4 causes the hooks 20 to spring into the recesses, the remaining stored energy serving to press the parts into good engagement. The bodies are prevented from rotation and axial displacement in their casings by interengaging lugs 12 and recesses 13, and ridge 14 and groove 15, respectively. In order to provide for good sealing between the connector parts, a rim 21 on body 4 engages a groove in body 1 and rims 23 round pins 3 engage grooves round the guide sleeves.
Patent GB-1516597-A (GB)
Title: Tape transport control system
IPC: G11B15/43
Filed: 1976-07-29
Abstract: 1516597 Automatic control of tape tension HONEYWELL Inc 29 July 1976 [20 Aug 1975]  31580/76 Heading G3R When slack tape is detected in a tape transport system a driving motor is periodically energized until the slack is removed. This is to prevent overspeed which might occur with continuous energization. Slack is indicated by the closure of two switches 30, 32 operated by respective jockey wheels 18, 26, in which condition, and provided a manual switch 46 is closed, pulses from a generator 40 are gated to reel motors 6, 8. The invention is intended to be used when loading a tape machine.
Patent GB-840092-A (GB)
Title: Improvements relating to electrical switches and contacts therefor
Inventor: DEAKIN STANLEY THOMAS
IPC: H01H1/42
Filed: 1956-10-17
Abstract: 840,092. Switch contacts. SIEMENS EDI. SON SWAN Ltd. Sept. 30, 1957 [Oct. 17, 1956], No. 31619/56. Drawings to Specification. Class 38 (5). A switch contact clip is formed of sheet metal and has a pair of prongs and a tag portion, the prongs being twisted in the same angular direction about parallel longitudinal axes so that the free ends of the two prongs press resiliently against opposite sides of a co-operating contact. The clip contact is formed as in Specification 768,242, and may be used in a rotary multiposition switch or in a two-way lever-operated snap-action switch.
Patent GB-392537-A (GB)
Title: Improvements in or relating to collapsable brushes for the purpose of compactness and cleanliness
IPC: A46B17/04
Filed: 1931-11-16
Abstract: 392,537. Brushes. AKI, S., Summit, Bittacy Park Avenue, Mill Hill, London. Nov. 16, 1931, No. 31655. [Class 19.] Two brushes B<1> formed of known separable sections B are housed in a box-like assembly A, D, the parts of which can be disassembled by sliding for use of the brushes singly. By removal of the backs &c. C the sections B can be removed for cleaning.
Patent GB-175061-A (GB)
Title: Improvements in or relating to automatic timing-devices for vulcanisers
IPC: B29C35/02
Filed: 1920-11-09
Abstract: 175,061. Frost, W., and Frost & Co., Ltd., H. Nov. 9, 1920. Vulcanizing by electricity.-In electrically-heated vulcanizers having a thermally - controlled switch &c. for cutting off the current when a predetermined temperature is reached, the switch device is adjustably mounted in or on a member situated near and extending out from the hot-plate and heated thereby, to enable the temperature of the vulcanizer at which the switch &c. operates, to be varied. Extending from the heated plate 11, is a lug 12 which may have constricted neck 13 of the same or different material. Situated in a pocket 14 in the lug 12 is a fusible plug 19 or the like, which may be a sliding fit, or screwed into the pocket, and which at a fixed temperature breaks the circuit. By adjusting the plug along the pocket the temperature of the plate 11 a which the current is interrupted may be varied.
Patent GB-216807-A (GB)
Title: Improvements in or relating to electric braking mechanism
IPC: H02P3/10
Filed: 1923-12-18
Abstract: 216,807. James, H. V. Dec. 18,1923. Dynamos, regulating; motors, controlling.-In an electric braking system for printing, papermaking, and textile machines, a dynamo 35, mechanically coupled to the driven machine, is adapted to set up an E.M.F. counter to that of the mains M feeding the brake-energizing coils 42 so that, as the machine slows down and therefore also the dynamo, the back E.M.F. of the dynamo opposing the line voltage falls and gradually produces a corresponding increasing E.M.F. across the brake-energizing coils. The Figure shows the circuit when the machine is stationary. To start the motor 2 driving the machine, a switch 33 is closed. Current flows from the positive main N through leads 1, 25, switch 29, lead 30, solenoid 31, lead 32 to the negative main N. The solenoid 31 operates a switch 47 and closes the driving circuit for the motor 2. To stop the machine the switch 33 is opened. The solenoid 31 is then de-energized and switch 47 opens, breaking the connection to the mains and establishing a circuit through the motor 2, lead 10, coil 18, lead 20, switch 24, leads 21, 3, back to the motor. The solenoid 18 closes a switch 40 and completes a circuit from motor 2, lead 10, brake resistance 11, switch 46, coil 15, lead's 16, 3 back to the motor. The coil 15 assists in holding the switch 46 closed. As the E.M.F. across the motor 2 decreases, the coil 18 becomes de-energized, but the coil 15 remains energized until the motor is stationary and holds the switches 41, 46 closed. The former switch closes a circuit through dynamo 35, lead 38, switch 41, lead 44, brake coils 42, 43 and lead 45. The dynamo 35 is wound so that, with the machine running at full speed, the E.M.F. generated is equal and opposite to that of the mains. If the switch 33 is opened while the machine is at full speed no energy initially flows through the brake coils 42, but as the armature 35 comes to rest its back E.M.F. decreases until, when it is stationary, the back E.M.F. is nil and the energy through the coils is that due to the full main voltage. Instead of using a separate dynamo 35 the motor 2 may be suitably wound and used. Specification 218,922, [Class 38 (iii), Electric motor control systems &c.], is referred to.