baber/WOPTO huggingface dataset:
Patent GB-1035036-A (GB)
Title: Process for the manufacture of sleeve welds
IPC: B29C65/66
Filed: 1963-03-27
Abstract: 1,035,036. Joining thermoplastic tubes. FARBWERKE HOECHST A.G. March 27, 1963 [March 30, 1962], No. 12155/63. Heading F2G. [Also in Division B5] A spigot and socket joint between two thermoplastic tubes is formed by providing the socket of such a width that, after the jointing surfaces have been rendered " doughy-liquid ", the spigot just fails to touch the inside wall of the socket on being concentrically introduced therein, and, after the spigot has been introduced, narrowing the socket until a portion of the " doughy-liquid " material issues from the end of the socket to form a bead therearound. The tubes to be welded are clamped in a device to enable the spigot to enter the socket concentrically with a clearance in the order of 0À1 mm. therebetween. For thin-walled tubes, the socket may be narrowed by radial compression and/or axial stretching by a multiple-jaw chuck, a clamp, a stretching ring or a gauging- plate. For thicker-walled tubes, a tube, prior to being expanded to form a socket, is heated to a temperature below the crystallite melting point thereof and rapidly cooled immediately after expansion. The spigot and the inside wall of the socket are heated, the spigot is introduced into the socket and the socket is reheated so that it narrows to form the weld. In examples, polyethylene tubes are welded by heating to 200‹ C.
Patent GB-1498514-A (GB)
Title: Electronic intrusion detection devices
IPC: G01S13/56
Filed: 1975-03-24
Abstract: 1498514 Intruder alarms CADIN ELECTRONICS Pty Ltd 24 March 1975 [25 March 1974] 12175/75 Heading G4N  In an intruder alarm system including means responsive to the Doppler shift between transmitted and received signals, for generating unit step signals from said Doppler shift signals, the unit step signals are integrated at 22 and an alarm 24 operated by a level detector 23 when the integrator 22 output reaches an alarm threshold. False alarms due to spurious signals are inhibited by a circuit 25 which initiates a time delay 27 when the integrator 22 output reaches a lower level as determined at 26 and resets the integrator 22 at the end of the delay period. As described, an ultrasonic tranmitter 10 and receiver 11 are connected to quadrature mixers 12, 13 which feed two channels in which the phase of the output varies by 90 degrees as the frequency varies with respect to a reference. In the event of a body moving in the protected region, the resulting Doppler shift signals are limited at 16 and 17, differentiated at 18 and trigger a monostable 19, pulses from which gate at 20 the signals from another channel into a sample and hold arrangement 21 which provides the required unit step signals for integrator 22 which operates on negative or positive signals depending on the sign of the Doppler shift. When the output of integrator 22 reaches 2À5 V, an alarm 24 is operated. Preventing false alarms.-When the output of the integrator 22 is greater than 0À5 V, one of transistors Q1, Q2 (Fig. 3) is turned on, so that amplifier A1 interrupts the charging path for a timer capacitor C 0 , enabling it to discharge via resistor R 0  until a Schmitt A2 operates which turns on Q3 or Q4 so as to reset the integrator 22. Amplifiers A3 and A4 are included so as to determine the polarity of integration at any instant.
Patent GB-782601-A (GB)
Title: An improved method of and apparatus for drying solid fuel with large water content
IPC: F26B3/28
Filed: 1955-04-28
Abstract: 782,601. Drying solid fuel. RASMUSSEN, C. O. April 28, 1955 [April 29, 1954], No. 12303/55. Class 34(2) In the dying of peat, brown coal, lignite or the like by the heat of the sun the fuel moves through a space confined wholly or partly by glass or other transparent or translucent material and hot or cold air is supplied. The apparatus consists of a room with glass roof and side walls in which the material 3 is moved on conveyers 5 from inlet 4 to outlet 6 where hot air is introduced. Alternatively the material falls over inclined plates 11 in a glass walled casing 8 having a heated helical pipe 12 (Fig. 2) and air is supplied and exhausted through openings 13, 14. In another alternative (Fig. 3) the material passes through a rotary conical glass drum 15 with inlet funnel 16 and vanes 17.
Patent GB-721318-A (GB)
Title: Improvements in or relating to cementitious materials
IPC: C04B28/26
Filed: 1952-05-15
Abstract: A cementitious composition is prepared by finely grinding gypsum and/or anhydrite and adding thereto a setting composition which is obtained by mixing potash alum, borax or boric acid, and anhydrite and treating with sulphuric acid until acid.  Sodium and/or potassium silicates can also be included in the setting composition.  The cementitious composition may also include stearin, oils and waxes (for waterproofing), vermiculite, diatomaceous earth, kieselguhr, sizal, cotton waste, wood fibre, wood wool, or nylon waste.
Patent GB-272328-A (GB)
Title: Improvements in and relating to luminous sighting devices
IPC: F41G1/32
Filed: 1926-05-13
Abstract: 272,328. Nitsche, M. P. May 13, 1926. Sights.-A luminous backsight and foresight are provided with illuminants emitting light of different wave lengths, the backsight emitting relatively long waves and the foresight relatively' short waves. Preferably radio-active paints are employed.
Patent GB-439277-A (GB)
Title: Improvements in or relating to devices for the straightening of teeth
IPC: A61C7/12
Filed: 1935-04-24
Abstract: 439,277. Orthodontic appliances. LINDE, J. A., 145, West 41st Street, New York, U.S.A. April 24, 1935, No. 12352. [Class 81 (ii)] Springs and wires to engage the teeth are secured to the arch bow of an orthodontic appliance by means of sliding sleeves ; preferably the springs or wires are tapered so as to be thicker at the part within the sleeve. The arch bow 1, provided with a tensioning sleeve 2, carries springs 3 ... 6 held in place by sleeves 7 ... 10. The tapered ends of the springs are inserted between the arch bow and the sleeves and the springs are then forced into position. The sleeves or the springs may have elevations 11, 12 engaging depressions in the arch bow and the springs may have projections 13 serving as stops. The surfaces of the springs and the bow are plane at the points of contact so as to prevent rotation ; preferably the springs are of semicircular section. Wires to engage small tubes secured to tooth bands are formed with tapered ends to engage sleeves on the arch bow. The anchor band 19, Fig. 9, for securing the end of the arch bow 1 to a molar tooth is adjustably secured to the bow by means of a sleeve 20 provided with projections or teeth 21 engaging a wire 22 fixed to the bow.
Patent GB-793927-A (GB)
Title: Improvements relating to rocket containers for aircraft
Inventor: CHAPLIN HERBERT EUGENE
IPC: F41F3/065
Filed: 1952-05-15
Abstract: 793,927. Self-propelled missiles. FAIREY AVIATION CO., Ltd. Aug. 12, 1953 [May 15, 1952], No. 12373/52. Class 9(2) The combination of an aircraft with a container for a number of rockets is provided with means to release the container from the aircraft and means arranged to fire the rockets from the container after it has been released. As shown in Fig. 1, the container may comprise a nose fairing 11, a central portion 10 containing 20-30 rockets 14, and a tailpiece 12 containing a rocket propulsive unit 13 for propelling the complete unit with its load. An aircraft may carry two containers, one under each wing, and after a predetermined time after a container has been fired from the aircraft the nose fairing 11 may be released by the ignition of a cartridge (not shown); the release of the fairing closes a micro-switch which operates a riffle-firing selector switch so that the rockets 14 are fired at 5 micro-second intervals.
Patent GB-249354-A (GB)
Title: Improvements in or relating to the control of pressure operated valves
IPC: F16K1/12
Filed: 1925-05-12
Abstract: 249,354. White, A. E., (Wellman-Seaver- Morgan Co.). May 12, 1925. Valves controlled by pilot or relay valves.-A main valve is controlled by an auxiliary valve comprising two longitudinally movable members, one of which is under the control of the operator and the other connected to the movable member of the main closure. The main part 30 of the auxiliary valve casing is divided bv integral ribs 39 into three chambers 40, 41, 42, of which chamber 40 is connected by a pipe 43 to a source of fluid pressure, as for example a central tapping from the main conduit, while chambers 41, 42 are connected to the two sides of the main actuating piston 20. A sleeve 31 having three ports 50, 51, 52 staggered both longitudinally and circumferentially is slidably mounted in the casing 30 and is adapted to be reciprocated by a screwed member 33 rotated by a hand wheel 36 engaging an internal thread in the sleeve. A piston 32 having a circumferential groove 32<1> and a longitudinal passage 54 is slidably mounted between stops 64, 65 in the sleeve to co-operate with the ports 50, 51, 52. The piston 32 is connected by a rod 55, lever 61, link 60, rod 59 to a stanchion 57 on the main valve so that when the hand wheel is operated to move the sleeve the consequential movement of the main valve moves the piston to restore the control valve to its neutral position. The rod 59 works in a recess in one of the ribs 14 supporting the inner casing for the main valves. Specification 182,414 is referred to.
Patent GB-972130-A (GB)
Title: Electrical gating circuits
Inventor: WOOD IVOR THOMAS
IPC: H03K19/082
Filed: 1960-04-07
Abstract: 972,130. Transistor gating circuits. ASSOCI ATED ELECTRICAL INDUSTRIES Ltd. March 24, 1961 [April 7, 1960], No. 12412/60. Heading H3T. A gating circuit comprises a number of cascaded A.C. amplifiers each gated by a D.C. signal V2 applied through an inductive impedance such that the gating signal also provides the operating potentials for the amplifier, the arrangement being such that an A.C. signal is only transmitted through the circuit if all the gating signals are present. As described, each stage comprises a transistor TR with a step down input transformer T1 in its emitter circuit, and a step down output transformer T2 in its collector circuit.
Patent GB-553063-A (GB)
Title: Improvements in or relating to a.c. electric circuit-breakers of the gas-blast type
IPC: H01H33/16
Filed: 1941-09-27
Abstract: 553,063. Gas-blast switches. REYROLLE & CO., Ltd., A., and AMER, D. F. Sept. 25, 1941, No. 12449. [Class 38 (v)] A gas-blast switch capable of carrying large loads whilst having a relatively small nozzle or vent through which the blast is discharged, comprises a contact E in the form of inwardly spring-pressed fingers carried on a fluid-actuated piston E' and normally bridging a tubular contact D and a metal nozzle contact B, and metal cylinder B<SP>1</SP> connected to the terminal B'. When opening circuit, the arc drawn between D, E is transferred to the end C<SP>1</SP> of a rod C carried within and by tube D, and also through the nozzle B to a contact B<SP>5</SP>, if such is provided. A further electrode F is connected through resistance F<SP>2</SP> to the contact C' and receives one of the roots of the arc if the latter restrikes. The arrangement C, D may be replaced by a simple rod or tube serving as both arc-initiating and arcing contacts. Specification 542,728 is referred to.
Patent GB-978711-A (GB)
Title: Improvements in or relating to implements for laterally displacing crop lying on the ground
IPC: A01D78/00
Filed: 1961-04-07
Abstract: 978,711. Haymaking machines. C. VAN DER LELY N.V. April 7, 1961 [May 6, 1960], No. 12577/61. Heading A1F. The frame of a rotary haymaking machine is constructed of resilient rods or strips to enable the rotary elements to move vertically on encountering ground irregularities. As shown, the device has rake-wheels 2-5 having axles 44-47 which are received in sleeves 48-51 clamped to a main beam 6. The beam 6 is in the form of a leaf-spring of which the lower leaves 7, 8 are longer than the upper leaves 9, 10, and support the outer sleeves 48, 51. The leaves are clamped together by two mirrorimage members 11, 12 which have integral forwardly-extending parts 16, 17 to receive the ends of further leaf-springs 18, 19 which are clamped at their outer ends by a member 28 which includes connections for the hitch-links 40, 41, 42 of a tractor 43. The leaf-springs 18, 19 are each double, the leaves being vertically spaced from one another. In a modification (Fig. 4, not shown), the leaves are replaced by sets of resilient rods.
Patent GB-347000-A (GB)
Title: Improvements in and relating to spring wheels for vehicles
IPC: B60B9/06
Filed: 1930-04-24
Abstract: 347,000. Spring wheels. MARSDEN, L., 70, Ellesmere Street, Farnworth, near Bolton. April 24, 1930, No. 12613. [Class 144 (i).] A spring wheel comprises a rim a spaced from the hub f by three helical springs b supported on cups i which are adjustably secured to the hub by bolts g. Shackles c pivoted on the rim and on the heads of the bolts g are fitted within the springs.
Patent GB-611335-A (GB)
Title: Improvements relating to receivers for angle-modulated carrier waves
IPC: H03J3/14
Filed: 1946-04-27
Abstract: 611,335. Frequency modulation. RADIO CORPORATION OF AMERICA. April 27, 1946, No. 12732. Convention date, April 27, 1945. [Class 40 (v)] A receiver for angle-modulated waves is muted unless correcting tuned, and the muting is removed by rectifying the oscillatory voltage set up in a sharply-resonant network tuned to the desired mean frequency. As shown, the output of a limiter valve 16, preceded by the usual superheterodyne stages, is fed through a coupling-condenser 63 to a sharply-tuned circuit 59, 62, across which is connected a diode rectifier 57 and load resistor 56. The negative voltage arising at the lower end of this resistor is applied to the grid of a valve 50. When no signal is being received, the valve 50 passes current through the cathode resistor 39 and drives the cathode of the audio-amplifier 37 positive so as to mute the receiver. As the set is brought into tune, the I.F. wave approaches resonance with the circuit 59, 62, and the negative voltage on the grid of the valve 50 rises, thus reducing its space current, and diminishing the prohibitive bias on the audio-amplifier cathode. The limiter valve 16 feeds a discriminator-rectifier circuit which may be of the phasing type described in Specification 489,094, the detected audio output being fed to the grid of the amplifier 37. The negative voltages at the lower end of the rectifier load 56 may control a tuning indicator 70 of the magic eye type.
Patent GB-1096772-A (GB)
Title: Pressure regulating flow control valves
Inventor: STADLER ALBERT
IPC: G05D16/06
Filed: 1965-03-25
Abstract: 1,096,772. Valves. ECLIPSE FUEL ENGINEERING CO. March 25, 1965, No. 12738/65. Heading F2V. A low pressure gas-regulating valve comprises a closure member 28 carried by a stem 30 attached to a diaphragm 40 and carrying a cotter-pin 82 which co-operates with the long arm 76 of a lever 72 pivoted at 74, a short arm 78 of the lever abutting a spring 70 to enable the latter to seat the closure member. A passage 46 connects the outlet 16 to the space beneath the diaphragm, the space above the diaphragm being connected to atmosphere via a bleed 43. The spring may be replaced by a weight adjustable along the arm 78. In operation, in its idle condition, the closure member rests lightly against the seat. When the inlet 18 is connected to source, the pressure in the inlet chamber acts on sealing diaphragm 55 to maintain the valve closed. Flow to the outlet occurs when the pressure therein is reduced sufficiently to allow the pressure difference across diaphragm 40 to unseat the closure member. If the demand at the outlet increases. the leg 47 of passage 46 reflects the velocity pressure to chamber 42 to increase the degree of opening of the valve.
Patent GB-831963-A (GB)
Title: Improved surgical dressing
IPC: A61F13/02
Filed: 1956-04-25
Abstract: An adhesive dressing comprising an absorbent pad on a backing of extensible synthetic resin sheet has that part of the backing adjacent to the pad perforated with a number of holes or openings large enough to permit the passage of liquid, so as to assist in the rapid drying of the pad if this should become wet.  Preferably there are at least 17 holes per square inch of the pad and the holes have a diameter of at least 0.02 inch.  The backing sheet preferably comprises a vinyl polymer coated with a pressure-sensitive adhesive. Specification 754,848 is referred to.
Patent GB-236346-A (GB)
Title: Improvements in apparatus for registering the time of closing or the period of time that may elapse after closing and before again opening a receptacle
IPC: G07C1/26
Filed: 1924-11-08
Abstract: 236,346. Fawkes, F. Nov. 8, 1924. Time-checking apparatus, check and token.- Apparatus for checking the time of opening or closing a receptacle comprises a frame b fixed to the receptacle a and adapted to be closed by a flanged plate c which may be locked to the frame by a lock k. The plate c has an inlet aperture c<2> covered by a shutter d slidable between guides arranged on the back of the plate c; also slidable on the back of the plate c are a plate h acted on by a spring i and a plate f acted on by a spring g and having a notch f<2> engaging the stop-pin e<2> of a stop-watch e. To open the aperture c<2> the plate c is unlocked from and slid out of the frame b, the key is then placed over a pin j and turned to move the sliding plate h to the left, Fig. 2, thus freeing a tang d<2> on the shutter d and moving the plate f, by means of an incline h<1> on the plate h, to stop the watch. The shutter d may then be opened by hand and will-remain open by reason of the pressure of the spring-pressed plate h upon the tang d<2>; the plate c is then locked to the frame b. On closing the shutter d by an external knob d<1> the plate h is allowed to move to the right and come above the tang d<2> thus locking the shutter, and the plate f moves under the action of its spring g to start the watch. The watch may be stopped on closing the shutter and started on opening it.
Patent GB-1198598-A (GB)
Title: Improvements in or relating to Protective Footwear.
IPC: A43B3/12
Filed: 1969-03-11
Abstract: 1,198,598. Boots &c. SEMPERIT OSTERREICHISCH - AMERIKANISCHE GUMMIWERGE A.G. 11 March, 1969 [12 March, 1968; 2 April, 1968], No. 12821/69. Heading A3B. Protective footwear comprises sandals (preferably of light construction) having air holes, the portions of the sandals which are endangered in use being reinforced. The reinforcements may consist of ribs 6, 7, 8 formed integral with the sandal in the toe, ankle and heel regions or of inserts or linings of metal, e.g. steel; hard plastics material, e.g. polyvinyl chloride, or of phenol-formal-dehyde resin stiffened fabric. The sandal may also include a sole reinforcing plate 9 of steel. The sandal may be made of antistatic and/or oil and petrol resistant material.
Patent GB-144071-A (GB)
Title: Show-case and like shop fittings for supporting umbrellas and other articles
IPC: A47F3/06
Filed: 1919-05-21
Abstract: 144,071. Davis, M. May 21, 1919. Garment and umbrella racks.-Relates to showcase and like shop fittings, and consists in providing one or more pull-out rods e normally lying ih sockets or recesses in the case or in the drawers, the rods being adapted to be extended as shown in Fig. 1 to form temporary supports for articles, such as umbrellas or wearing-apparel, taken from the case. In the construction shown, rods e slide in tubes h fixed in the drawers d, stops f on the rods engaging in slots in the tubes.
Patent GB-183281-A (GB)
Title: Improvements in or relating to box spanners
IPC: B25B13/44
Filed: 1921-05-05
Abstract: 183,281. Chadderton, I., and Booth, R. C. May 9, 1921. Wrenches with chuck-like grip. -An adjustable box spanner comprises a tube a restricted near one end and widened out to provide a rectangular aperture having inclined sides b<1>, b<2>. Two wedgeshaped jaw members c', c<2> are slidably accommodated within the aperture and are held against the sides b<1>, b<2> by screws e passing through slots d therein. Springs may be interposed between the heads of the screws e and the sides b', b<2> to provide a resilient grip and may be housed in cup-like washers ; or studs and knurled nuts may be used in place of the screws e. A pin f fixed to the member c' slidably engages a hole in the member c<2> so that the jaws move together. Below the jaws grooves c<4> are provided to receive the projecting ends of bolts. The jaws may be undercut or serrated to increase the grip. The opposite end of the tube a may have adjustable jaws or may be formed as a rigid box spanner.
Patent GB-747868-A (GB)
Title: Improvements in or relating to storage type cathode ray tubes
IPC: H01J31/62
Filed: 1953-05-08
Abstract: 747,868. Cathode-ray storage tubes. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. May 8, 1953 [May 10, 1952], No. 12951/53. Class 39 (1). A storage tube has two guns, one axial and the other inclined to the tube axis, both on the same side of the target, the cathode of the first gun .being at a lower potential than the target and the cathode of the second gun at the same potential as the target, the axial gun laying down a charge image which reflects or attracts the electrons from the inclined gun, the reflected electrons passing to a collector. The target 2 is a thin dielectric sheet, e.g. of mica, on one face of a metallic signal plate and the fine mesh grid 4 close to the target is at a high positive potential as is the wall coating 6. The inclined C.P.S. gun I is in a side arm of the tube and its centre of deflection C1 and that C2 of the axial gun II are both in the focal plane of an electron lens 9 which may be the wall coating 6 or a metallic ring coaxial with the plate 3. The lens 9 is at a potential less than that of the grid 4. The collector electrode 10 is also in the focal plane of lens 9. The potential of the writing gun II is such that the secondary emission of sheet 2 is greater than unity and the modulated beam therefrom lays down a positive charge image. When the picture to be recorded is panoramic, the charge image laid down by gun II is of such a mean potential relative to the cathode of gun I that the secondary emission is greater than unity and its positive charge is maintained for successive occasions. The recorded picture is consequently in two shades, black and white, and the trajectory of moving objects is recorded on the fixed background. The primary electrons are sufficiently accelerated by the grid 4 that when reflected at uncharged points on the target, they pass the lens 9 which is at lower potential and are received by the collector 10. In the arrangement of Fig. 4 (not shown), television signals of one standard laid down by gun II are transformed to another standard by reading with gun I. The charge potentials are such that secondary emission is less than unity, and each point charged positively by gun II is discharged by gun I, elemental areas initially or subsequently without charge reflecting the primary electrons of the C.P.S. gun. The signals at the collector are therefore modulated in accordance with the charge image on the target. Specification 754,433 is referred to.