baber/WOPTO huggingface dataset:
Patent GB-417256-A (GB)
Title: Improvements in or relating to wireless signalling or distant control systems
IPC: H04L27/26
Filed: 1933-03-21
Abstract: 417,256. Type printing telegraphy. COMPARE, M., 2, Via Quintino Sella, Milan, Italy. March 21, 1933, No. 8569. [Classes 40 (iii) and 40 (v).] One or more wireless stations can be selected for the receipt of signals controlling printing- telegraphs, servomotors, or other electrical devices. The signals comprise interruptions, spaced apart according to a code, in an otherwise continuously emitted group of low frequencies, which group characterizes the receiving station to be selected and is applied to modulate a carrier wave. At the transmitter, low-frequency oscillators A<1>, B<1>, C<1> are tuned to frequencies which in combination are adapted to select the desired receiving station. These oscillators are short-circuited during idle periods through the arm G and latch F, but on depression of a keyboard key A, B, C ... the latch is released by magnet H and the arm G performs one revolution during which the oscillators A<1> B<1>, C<1> modulate the carrier except for two interruptions due to their being short-circuited through the arm G, the depressed key, and that pair of distributer contacts Z which is associated with the key. At the receiving station the demodulated signal is applied to a group of tuned relays R<1>, R2, R<3>, whose resonances are characteristic of the station. When these are simultaneously excited they close a circuit through magnet E, which releases arm K for one revolution, and through resistance 18 which reduces the grid potential of valve 19. Thereafter the valve is blocked except during the two code interruptions of the signal ; when these occur current flows through the valve, arm K and the appropriate two distributer segments, and a corresponding pair out of the relays Q. These are normally locked through battery 15, but the selected two are de-energized by the signal current till the end of the signal period, when they are re-energized by a short-circuit applied mechanically at S.
Patent GB-232031-A (GB)
Title: Improvements relating to automatic telephone exchanges
IPC: H04Q1/04
Filed: 1924-04-05
Abstract: 232,031. Siemens Bros. & Co., Ltd., and Lambert, C. April 5,1924. Automatic exchange switchboards.-In an automatic exchange, the racks C for the connectors assigned to a group of subscribers are disposed substantially at right angles to the racks B on which the line switches are mounted. Two lines of line switch racks may be arranged parallel to each other with a passage between, above which is a duct D for jumper connections and the cables M from the main frame. The line switches b are mounted in vertical columns, the incoming connections being at the top and the multiple connections at the bottom of the columns.
Patent GB-126181-A (GB)
Title: Improvements in or connected with Moulds for Shaping and Vulcanising Covers for Pneumatic Tyres.
IPC: B29C33/76
Filed: 1918-05-24
Abstract: 126,181. Moseley & Sons, D., and Duncan, T. W. May 24. 1918. Vulcanizing, cores for.-Cores for moulds for shaping and vulcanizing pneumatic tyre covers are made of asbestos in one piece. In the construction shown, the core a is in the form of an endless ring built up of a body a<1> composed of layers of asbestos fabric and a base a<2> composed of layers of cotton fabric. The body a<1> is enclosed in cotton fabric a<3> and the body and base are covered with cotton fabric a<4>. Fig. 5 shows' a core a divided at a<5>, one end being fitted with a metallic part c to overlap the other end, which is recessed at a<6> to form an overlapped joint.
Patent GB-565804-A (GB)
Title: Improvements relating to jet engine impellers
IPC: F04D29/32
Filed: 1942-06-25
Abstract: 565,804. Plywood sheets. HILLS & SONS, Ltd., F., and TAYLOR, J. L. June 25, 1942, No. 8727. Drawings to Specification. [Class 145 (ii)] [Also in Group XXVI] Rotor discs for axial flow turbine type aircompressors are made of plywood built up of overlapping sector-shaped veneers so that the major part of the wood at any place has a substantially radially disposed grain. The veneers may be wider than sectors at their inner ends, or there may be additional veneers at the central part, so that when compressed to a uniform thickness the disc has a density progressively increasing towards the centre of the disc. The blades are formed in the wood by routing out the inter-blade spaces.
Patent GB-927045-A (GB)
Title: Improvements relating to seat assemblies
IPC: A47C1/025
Filed: 1960-03-12
Abstract: 927,045. Convertible chairs; bed settees. AUSTER Ltd., and W. W. SMALL. March 13, 1961 [March 12, 1960], No. 8789/60. Class 52 (2). [Also in Group XXV] A seat assembly comprises a seat 2 and backrest 1 having a common pivotal connection 5 to the upper end of a swivellable link 6 which is pivotally connected at 7 to a base member 8, the seat and back-rest being collectively angularly movable, relatively to the link 6, between a stable forwardly-facing seating position and a stable rearwardly-facing seating position, and gear means being provided whereby the collective angular movement of the seat and backrest causes the link 6 to move angularly in the opposite direction about its pivotal connection 7. The seat 2 and back-rest 1 are carried respectively by arm members 3, 4. A gear member 10 is riveted at 9 to the arm member 3, is centred at 5 and meshes through an intermediate idler gear 11 with a fixed gear member 12 carried by the base 8 and centred at 7. A bar 14 is pivoted at 13 to the arm member 4 and provided with a releasable catch 17 to engage with a latch part 16 carried by the arm member 3. When the catch is released the seat and back-rest open out so that they extend in a line and form a bed.
Patent GB-841127-A (GB)
Title: Inverse emulsion polymerisation of water-soluble monomers
IPC: C08F2/22
Filed: 1958-03-19
Abstract: In an inverse emulsion polymerization process aqueous solutions of one or more water-soluble ethylenically unsaturated monomers are emulsified to a water-in-oil emulsion in a hydrophobic liquid organic dispersion medium containing between 0.1 and 10% by weight of a water-in-oil emulsifier and polymerized by heating in the presence of a free-radical catalyst.  Acrylamide, methacrylamide, acrylic and methacrylic acids, vinyl benzyl trimethylammonium chloride alkali metal and ammonium salts of 2-sulphoethacrylate and vinyl benzyl sulphonates and 2-aminoethylmethacrylate hydrochloride are polymerized using emulsifying agents such as hexadecyl sodium phthalate, sorbitan monooleate and stearate and cetyl stearyl sodium phthalate, hydrophobic liquids such as hydrocarbons, toluene and xylene and perchloroethylene, and catalysts such as benzoyl and lauroyl peroxides and potassium persulphate.  The reaction may be performed at atmospheric or superatmospheric pressure and the polymer is separated by flocculating, filtering, washing and drying.  U.S.A. Specification 2,686,729 is referred to.
Patent GB-308277-A (GB)
IPC: H04N3/04
Filed: 1929-03-20
Abstract: 308,277. British Thomson-Houston Co., Ltd. (Assignees of Kell, R. D.). March 20, 1928, [Convention date]. Television.-In a television apparatus for transmitting images in colour, alternate groups of elemental areas are successively illuminated by light of different colour. The rotating disc 4, Fig. 1, is provided with two sets of spirallyarranged holes, 6, 7, which scan interlacing lines of the picture 5, the illumination being obtained from a source 1, via a lens 2, and a disc 3 geared to the disc 4, and consisting of two coloured sectors 9, 10 which provide holes 6 with light of one colour and holes 7 with light of another. Light reflected from the picture 5 is converted into electrical impulses by means of lightsensitive devices 13, which modulate, a wireless transmitter 14. The scanning disc 18, Fig. 2, at the receiver is identical with disc 4 at the transmitter, the sets of holes being illuminated by two different coloured lamps 16 and 17 respectively, the current impulses from the receiver 15, being directed to the appropriate lamp by a commutator 20 mounted on the same shaft as the disc 18.
Patent GB-897033-A (GB)
Title: Process for polymerising alpha-olefins and catalysts therefor
IPC: C08F10/00
Filed: 1961-03-13
Abstract: Alpha-olefins are polymerized to polymers at least prevailingly consisting of isotactic macromolecules in the presence of a catalyst formed from an organo-metallic compound of a metal of Group I, II or III of the Mendeleeff Periodic Table and at least one halide of a transition metal of Group IV, V or VI in which the metal has a valency lower than the maximum and a complex formed by treating a nitrogen-containing organic base with 10 to 100 mole per cent of water with respect to the organic base.  The organic base may be pyridine or diethylamine.  Other catalyst components may be titanium trichloride and triethyl aluminium.  The olefin may be propylene or butene-1.  The products may be washed with methanolic hydrochloric acid and methanol.  Polymerization may be effected in an inert diluent, e.g. heptane, and the catalyst preparation in the presence of a small amount of a liquid having a relatively high solubility for water, e.g. benzene.
Patent GB-1482845-A (GB)
Title: Pulse generators and to the testing of pulse regenerators
IPC: H04B17/40
Filed: 1975-03-05
Abstract: 1482845 Testing pulse repeaters WESTERN ELECTRIC CO Inc 5 March 1975 [11 March 1974] 9077/75 Heading G1U [Also in Division H3] Pulse repeaters 120-1,..., 120-n, Fig. 1, in series in a communication channel, are tested individually by applying a random pulse train, from a central generator 102, see Division H3, to the line, the random pulse train having its mean D.C. level modulated by an oscillator f1,..., fn selected to correspond to the paricular repeater under test, and the resulting signal applied by the selected repeater to a common return line 135 is compared 131 at the central station with the expected response. Each pulse repeater, such as the first 120-1, includes a pulse regenerator 122-1 together with a low pass filter 123-1 and a band pass filter 124-1 for test purposes, each band pass filter being tuned to the particular frequency corresponding to the particular repeater. To perform the test the random pulse train, with its D.C. level modulated by a selected oscillator f1,..., fn is applied to the line. At each repeater the D.C. level of the received pulse train is extracted, by low pass filters 123-1,..., 123-n, to give a signal as shown in Fig. 2E, and at that repeater corresponding to the selected modulating frequency the band pass filter will produce a signal as shown in Fig. 2F, which is fed back over the common line to be compared with the expected response if all repeaters up to and including the one under test are operating correctly. Thus, an incorrectly functioning repeater is identifiable as that one which produces too small a return signal.
Patent GB-472588-A (GB)
Title: Device for producing illuminated advertisements
IPC: G09F13/24
Filed: 1937-03-30
Abstract: 472,588. Moving signs. NOORDEN, J. W. VAN. March 30, 1937, No. 9082. [Class 3 (i)] In display signs of the type comprising transparent tubes shaped in the form of letters &c and containing liquid of low boiling point which is maintainec in a state of ebullition bv a heat source at the lower end of the tube, means are provided for effecting a more uniform dis tribution of the bubbles as be tween vertical and horizonta portions of the tube. The means shown comprise a baffle 5 which is located across the vertical tube 1 at the top corner of its junction with the approximately horizontal branch 2. The baffle 5 may be formed by a part of the branch 2 extending into the stem 1 and having its lower end cut off obliquely, or may consist of a separate plate. Alternatively, the tube 1 may be constricted just above the junction of the branch 2.
Patent GB-725457-A (GB)
Title: Improvements in means for hoisting and lowering small craft from ships
IPC: B63B27/16
Filed: 1953-04-02
Abstract: 725,457. Boat handling gear. MACGREGOR, R. April 2, 1953 [Jan. 26, 1953], No. 9155/53. Class 115. [Also in Group XXX] Means for facilitating the hoisting and lowering of small craft to and from ships by derricks constructed so as to prevent collision while permitting relative movement due to swell comprises an articulated boom having a first section pivoted to the ship so that it can assume various positions and a second section hinged to the first section to extend outwardly in various positions and terminating in means for attachment to the craft. Auxiliary cargo carrying craft 6 are stored in a ship and are launched at sea by derricks 2 to 2<SP>111</SP>, having pulley tackle 5 for engaging the craft and operating winches 7 to 7<SP>111</SP>. The craft when launched, to prevent bumping, is attached to the ship by a linkage 10 pivoted on the ship. and pivoted to a member 14 pivotally mounted on a pintle 16 on the craft. A rope 17 is secured to the member 14 and passes over a pulley 12 to an achorage on the ship to restore the member to its inoperative position 141.
Patent GB-1063265-A (GB)
Title: A wet jig
Inventor: JEMELJANOV DMITRY SIDOROVICH
IPC: B03D1/14
Filed: 1963-03-08
Abstract: 1,063,265. Jigging apparatus; froth flotation. KHARKOVSKY GORNY INSTITUTE. June 8, 1964 [March 8, 1963], No. 9235/63. Heading B2H. A jig has a perforated diaphragm beneath which air is introduced to move the diaphragm up and down and to blow air through it for froth flotation. In the Fig. the diaphragm 7 is mounted in a frame connected by bellows 13, 15, to fixed frames 1, 14. A bed 11 of glass balls or felspar on a screen 2 is fed with lump coal through an inlet 9 and with coal slime treated with a froth flotation agent through inlet 10. The diaphragm is guided vertically on rods (not shown) and urged downwardly by springs, and is reciprocated by intermittent opening of rotary air valve 6. Foam is removed by blades 18 traversing the apparatus on endless chains. Coal concentrate at 24 is removed through valve 22, while rock passes through bed 11 and screen 2. The diaphragm is sloped so that the rock passes into ducts 26 containing bellows 26'. The jig may be of such length that rock falls on the left hand part of the diaphragm, and coal passing through the bed on to the right hand part. Since froth removal takes place at right angles to the flow of material, the flotation concentrate may be subdivided.
Patent GB-554288-A (GB)
Title: A mould for casting chains
IPC: B22D25/02
Filed: 1942-07-03
Abstract: 554,288. Casting chains. BURGER, G. July 3, 1942, No. 9246. [Class 83 (i)] A mould 6, for casting one chain link or a number of interconnected chain links so as to connect two preformed chains or add additional links to one preformed chain in known manner, is provided on each side with a gripping device for holding the preformed chain links. Extensions 14, 15 are cast integrally with the mould walls 7, 8 and a cross bar 16 and screws S serve to clamp the links 12, 13 thereto.
Patent GB-974181-A (GB)
Title: Improvements in and means for insulating rooms and the like
Inventor: RALSTON ALEXANDER
IPC: E04B9/00
Filed: 1962-03-09
Abstract: 974,181. Suspended ceilings. RALSTON ENGINEERING CO. Ltd. May 16, 1963 [March 9, 1962], No. 9289/62. Heading E1V. An insulating tile for affixing to wall or ceiling surfaces wherein the outer protective casing or cladding 1 (Fig. 1) is a sheet of metal or like relatively rigid and wear-resistant material has its exposed face 3 perforated to form inwardlydirected projections 4 of shallow Vee-shape of equal height whereby a minimum clearance is maintained between a slab of sound and heat insulating material and the rear of the sheet. The longer sides of the perforations are between the flanks of the Vee, which are arranged as shown in Fig. 1, apertures 7 being formed as shown in Fig. 4. The sides of the front of the casing 1 are inturned at substantially 90 degrees (Fig. 2) to form flanges 2 with free edges having fixing formations to engage coacting mounting bars on the wall or ceiling surface, and may have formations 9, 10 (Fig. 4) thereon interlocking with formations on adjacent tiles, when the flange ends may be cut away. The interlocking formations may then themselves be engaged by a prong 11 of a spring clip 12 (Fig. 5), which can be sprung over a beam 13 secured to the wall or ceiling surface.
Patent GB-373709-A (GB)
Title: An improved apparatus for tennis practice
IPC: A63B69/40
Filed: 1931-03-27
Abstract: 373,709. Projecting appliances for tennis practice. JEPSON, P., 3, Hotham Grove, Elsternwick, Melbourne, Australia. March 27, 1931, No. 9319. Convention date, March 27, 1930. [Class 132 (ii).] In a projecting-appliance for use in practising lawn tennis, the initial depression of a spring- loaded pedal 22 selects one from a plurality of balls and a further depression of the pedal causes the projection of the selected ball 44 by spring-loading and releasing a projector arm 17. During the depression of the pedal, a roller 29 co-operates with a hooked projection on the projector arm to rotate the arm counterclockwise against the action of a spring.32, while a spring-urged lever 27, connected through a pitman to a rockable member 18, is released to deliver a ball from a magazine 5 to a forked support 13. Upon the completion of the depression of the pedal, which is ensured by a full-stroke device 41, 43, the projector arm escapes from the roller 29 and returns to project the positioned ball. The effective length of the projector arm is variable by a cam 14 that is adjustable to raise or lower the ball positioning fork 13. The tension of the projector spring 32 may be adjusted by movement of a lever 33 to which the lower end of the spring is anchored.
Patent GB-659125-A (GB)
Title: Improvements in or relating to diversity reception employing frequency shift keying
Inventor: CLARK RAYMOND LAURENCE
IPC: H04L1/06
Filed: 1949-04-06
Abstract: 659,125. Radio receiving circuits. STAN. DARD TELEPHONES & CABLES, Ltd. April 6, 1949, No. 9349. [Class 40 (v)] A diversity receiver for frequency shift telegraph signals, comprises detectors 4, 5, 6 of like polarity for " mark signals connected in parallel to a common resistor 20, detectors 21, 22, 23 of opposite polarity for "space" signals also connected in parallel and feeding a common resistor 40, the resistors 20, 40 being connected to a common output resistor 44 of relatively low value, and condensers 13-35 being provided self-biassing the detectors so that only the strongest " space " and " mark # signals are operative. The system being balanced cancels out noise voltages and additional diversity channels may easily be added. A driver stage of each diversity channel is connected to tuned input circuits of the mark and space detectors for that channel. A meter in the output circuit indicates any deviation of the mean signal frequency from its correct valve. In a modification triode amplifiers having a common anode resistor and connected to adjustable tappings on the resistors 20, 40 derive the output.
Patent GB-996109-A (GB)
Title: Polyolefins of improved light stability and dye receptivity
IPC: C08K5/138
Filed: 1964-03-05
Abstract: A composition comprises polyethylene or a stereoregular polymer of an a -olefin having at least 3 carbon atoms and a small amount of a chromium phendate of a bis-(p-alkylphenol) sulphoxide or a bis-(p-alkylphenol) sulphone in which at least one phenolic hydrogen has been replaced by the trivalent chromium ion.  In addition the composition may contain a small proportion of a phenolic compound. The exemplified chromium compound is the chromium phenolate of o,o1 - bis - (p - 1,1,3,3 - tetramethylbutylphenol) sulphone.  The phenolic compound exemplified is the reaction product of nonyl phenol and acetone. The products have improved dyeability and stability.
Patent GB-1470903-A (GB)
Title: Ink ribbon cartridge with constant tension mechanism
IPC: B41J32/00
Filed: 1975-03-06
Abstract: 1470903 Ribbon cartridge with constant tension mechanism QUME CORP 6 March 1975 [7 March 1974] 9402/75 Heading B8M A ribbon 18 is unwound from a supply spool 30 of a cassette 10 via an exit 41, guided along a printing station by guides 21, 20, and conveyed through an entrance 43 to be wound on a takeup spool 50, wherein the cassette includes a drag force means comprising an elastic belt 80 which is trained around idler rollers 82, 83, 84 and which contacts the outer convolution of the ribbon 18 on the supply spool 30 to provide a drag which varies with the changing radius of the ribbon reel in use in order to maintain the tension on the ribbon 18 constant throughout. Capstan 47 in conjunction with pinch rollers 49, which is biased towards the capstan 47 by a member 56, provides the drive for the ribbon 18. The capstan 47, supply spool 30 and take-up spool 50 have grooved portions 64, 37 and 55 respectively each of which project outwardly of the cassette housing in order to be gripped for manual rotation. The capstan 47 is driven by a drive means 12. A guide arm 27, secured by a spring 28, provides a yieldable ribbon surface guide in the event the ribbon 18 is accelerated or decelerated. The printing station includes a rotatable print wheel 13 having a plurality of character pads 14, the pads 14 pressing ribbon 18 against the surface of a sheet of paper 24, or other suitable print receptor resting on the surface of a platen 25 whenever a print hammer 26 is actuated in use. The elastic belt is preferably made of polyurethane and the bottom inside surface of the cassette is made of a low friction graphite coated plastics material.
Patent GB-707693-A (GB)
Title: Improvements in loaders
IPC: B65G41/00
Filed: 1952-04-15
Abstract: 707,693. Scoop-arm load handling machines. AKTIEBOLAGET ATLAS DIESEL, April 15, 1952 [April 16, 1951], No. 9404/52. Class 78 (3) [Also in Groug XXI] In a loader comprising a superstructure 2 swingable horizontally on a base 1 and carrying a shovel 6 movable from a loading or digging position to a discharge position at least one pressure fluid cylinder 7 is provided for centering the superstructure relative to the base, and at least one further pressure fluid cylinder 8 is provided for swinging the superstructure relative to the base from a centre position to a lateral loading or digging position. The pressure fluid (preferably compressed air) is supplied to conduit 31 and the spaces 45 and 46 of the cylinder 8 are connected by conduits 47 and 48 with a valve casing 49 controlled manually by a lever 50. A bell crank lever 32, mounted on superstructure 2 and operated by the passage of the rocker structure 5 rolling on the rails 4 when the shovel is elevated from the loading position as shown to the discharge position, operates a valve 29 controlling supply of compressed air via conduit 28 to a control valve 13 for centering cylinder 7. The valve 13 is opened by a cam 67 when the superstructure is displaced from its eccentric position and air then enters cylinder 7 through conduits 19 or 20 according to the direction of displacement of the superstructure. The double-acting pistons operating in cylinders 7 and 8 rotate a disc 12, rigidly connected to turntable 65 and mounted on ball bearings 3, which supports the superstructure 2. An air-operated locking device 40, 41 is provided to releasably secure the superstructure when in the centre position.