baber/WOPTO huggingface dataset:
Patent GB-613017-A (GB)
Title: Improvements in pulse-echo position indicator systems, and other systems which involve the measurement of the time-interval between periodically occurring information-conveying pulses and periodically occurring datum pulses
IPC: G01S7/00
Filed: 1945-05-02
Abstract: 613,017. Television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 2, 1945, No. 11187. Convention date, June 19, 1942. [Class 40 (iii)] [Also in Group XL (c)] To reduce the frequency band required for the transmission of pulse radar signals over lines from the receiver to a central station, an image representative of the information received from the signals is produced at the receiver and is scanned at a lower rate than the pulse recurrence frequency to produce signals which are transmitted to the central station where they are displayed upon a cathode-ray tube. The echo pulses, which are received at RE are displayed on a magnetically deflected plan-position indicator tube IT<1>. The signals are also displayed on the tube IT<11> as intensity modulations of a circular time trace which is developed from a signal supplied from the transmitter pulse generator PG. The 600 p.p.s. output of PG synchronizes a sine wave generator SW which then feeds the deflecting coils of the tube IT<11> in phase quadrature. The trace on the screen of the tube is scanned by a slotted disc RD rotating 30 times per second and a photo-cell PC, the output of the latter being fed over lines to a central station where the signals are displayed on a cathode-ray tube IT<111> similar to the tube IT'. To achieve the necessary synchronism at the central station, the directional aerial DA and the disc RD are driven by a synchronous motor SM<1> from the 60 c/s. supply mains at 10 r.p.m. and at 30 r.p.s. respectively and the deflecting yoke DY<11> of the tube IT<111> and the sweep wave generator SG<11> are similarly driven synchronously at the central station. Since the trace on the tube IT<11>, corresponding to a repetition rate of 600 p.p.s. is scanned at a rate of 30 times per second, the bandwidth of the signals sent to the central station is reduced by a factor of 20. Moreover, owing to the integrating effect of the repeated displays on the tube IT<11>, the signal to noise ratio is improved. An alternative - embodiment employs a cathode-ray storage tube having double tube construction, of the type described in Specification 471,913. The tube comprises a doublesided mosaic, as described in Specification 454,422, and two oppositely faced electron gun structures, one of which produces a cathode-ray beam modulated with the received echo signals and scanning the mosaic 600 times per second so that an electron image is formed thereon, while the other produces a cathode-ray beam scanning the mosaic 30 times per second to produce signals which are transmitted to the central station as before.
Patent GB-763724-A (GB)
Title: Improvements in or relating to electrical control mechanism
IPC: G11B25/00
Filed: 1952-05-03
Abstract: 763,724. Electric selective signalling systems. TYSZKIEWICZ, S. E. May 1, 1953 [May 3, 1952], No. 11249/52. Class 40 (1). [Also in Group XXXIX] The invention relates to control equipment for a magnetic recording system in which impulses set a switch having control relays connected to its banks, the control relays locking up on operation, whereupon the switch is homed. As shown, a telephone set is equipped with a non-standard dial in which its impulse contacts D are normally open, but close on the forward motion of the dial and then open on commencement of the return motion during which they close intermittently for a number of times corresponding to the digit dialled and finally remain open. Impulse relay IR in the recording station operates to the first closing of the dial contacts and slow-release relays A and B follow. Subsequent operations of the impulse relay set the switch PS and upon the last release of IR, relay A releases to cause the operation of one of a set of control relays C connected to the corresponding terminal of switch-bank PS2. Relay C locks up and when B falls back, the switch PS homes. Relay C remains locked up, until a further train of pulses operates A. The various C relays control different functions of the recording equipment, e.g. recording, stopping the recording, marking the recording medium at the end of a letter or paragraph and playing back. Specification 657,627 is referred to in the Provisional Specification.
Patent GB-1240992-A (GB)
Title: Oligomerisation catalysts
Inventor: JENKINS DEREK KEITH
IPC: B01J31/26
Filed: 1967-09-20
Abstract: 1,240,992. Oligomerisation catalysts. INTERNATIONAL SYNTHETIC RUBBER CO. Ltd. 19 Sept., 1968 [20 Sept., 1967; 7 March, 1968], Nos. 42862/67 and 11270/68. Heading B1E. [Also in Division C5] A catalyst system comprises (a) a zero valent nickel phosphorus complex having the general formula wherein each A is a hydrogen atom or an alkyl, cydoalkyl, aryl, aralkyl, alkoxy or aryloxy radical, which radical may be unsubstituted or substituted, for example with a halogen atom or an alkyl radical, or may contain ether or thioether linkages or imines, secondary or tertiary nitrogen atoms, each B is a halogen atom and x is 0, 1, 2 or 3 with the proviso that x is not 3 in at least one of the (PA x B 3-x ) ligands, (b) an aluminium trihalide or aluminium dihalohydride, and (c) an organometallic compound of a metal selected from Groups I, II and III. Component (a) may be a nickel tetrakisphosphorus trihalide, for example nickel tetrakisphosphorus trichloride. Component (b) may be an aluminium trichloride or aluminium tribromide, the aluminium trichloride may be in the form of a hydrocarbon-soluble aluminium trichloride complex, for example a complex with an ether, for example anisole, a thioether or a cyanide. Component (c) may be triethyl aluminium or an alkyl lithium, for example n-butyl lithium, an aryl lithium or an aralkyl lithium. The components (a), (b) and (c) are present in amounts preferably such that the molar ratio of component (a) to component (b) is 1 to at least 7.5, for example between 1 to 15 and 1 to 25, and the molar ratio of component (a) to component (c) is 1 to at least 15, for example between 1 to 25 and 1 to 35; in a preferred catalyst system, the molar ratio of the components (a):(b):(c) is 1:20:30. The components (a), (b) and (c) preferably are dissolved or dispersed in dry air-free organic solvent; suitable solvents are saturated aliphatic straight-chain hydrocarbons, for example hexane, saturated cyclic hydrocarbons, for example cyclohexane, and aromatic hydrocarbons, for example benzene and toluene; chlorinated solvents may be used but are not preferred. Component (a) advantageously is used in an amount such as to provide a concentration thereof of 0.5 millimeters or less, for example 0.25 milimoles, per litre of solvent; the components (a), (b) and (c) are added in the order preferably (a), (b), (c) and less preferably (b), (a), (c). The catalyst system may be used in the oligomerisation of ethylene or in the cooligomerisation of ethylene and at least one cyclic hydrocarbon having at least one vinyl group. Suitable cyclic hydrocarbons are vinyl cyclohexane and vinyl aromatic and substituted vinyl aromatic compounds, for example styrene and substituted styrenes, for example alpha-methyl styrene, ethyl styrene and divinyl benzene; it is preferred that the catalyst components (a), (b) and (c) are added to an organic solvent containing ethylene to be oligomerised or co-oligomerised.
Patent GB-959999-A (GB)
Title: A method for manufacturing mosaic pictures
IPC: B44C3/12
Filed: 1963-03-21
Abstract: 959,999. Mosaics. E. PELKA. March 21, 1963 [March 28, 1962; May 30, 1962], No. 11291/63. Heading B6G. Mosaic stones 7 of synthetic plastic material, such as polystyrene, are individually stuck with adhesive applied intermittently with a stylus to a transparent base plate 1, placed over a picture. The base plate may be opaque with the outline of a picture formed with raised or sunken contours thereon.
Patent GB-710760-A (GB)
Title: Improvements in or relating to pulse multiplex communication systems
IPC: H04B7/17
Filed: 1951-05-15
Abstract: 710,760. Multiplex pulse signalling; pulse discriminating circuits. PATELHOLD PATENTVERWERTUNGS- & ELECTRO-HOLDING AKT.-GES. May 15, 1951 [May 12, 1950], No. 11329/51. Classes 40 (5) and 40 (6) In a multiplex pulse communication system provision is made for a service channel pulse to be generated, following each long synchronizing pulse and with a predetermined time interval therebetween, the service pulse occurring in the interval provided for the synchronizing pulse. For adding the service pulse to the multiplex pulse train e2, Fig. 2, these pulses are fed from terminal 1, Fig. 1, to a sawtooth generator V1, R1, C2, which produces the sawtooth pulses a at the anode of valve V1. The high-amplitude positive output pulse, due to the synchronizing pulse, overcomes the bias on valve V2 and causes the damped tuned circuit Dr, R2, C4 in its anode circuit to ring to produce the wave b. The first positive half wave of the oscillation b is variably clipped in valve V3 to provide pulses modulated in duration by the speech source NF coupled through transformer T to the grid circuit. These are the service pulses which are fed back to the terminal 1 to provide the pulse train e<SP>1</SP>2. The service pulse generator may be disabled by switch Q which connects the screen grid of valve V2 to a negative or positive potential source. To select the service pulses at a receiver a circuit simila to Fig. 1 is used to derive a gate pulse, from the synchronizing pulse, the gate pulse being applied with the incoming pulse train, to a coincidence valve, Fig. 3 (not shown). The switch Q, Fig. 1 may be controlled by the service pulses arrivin from another station. A circuit comprising differential relay for this purpose, the windings o which are in the anode circuits of two valve fed in phase opposition with incoming servic pulses, is described, Fig. 5 (not shown). Speci fication 600,258 is referred to.
Patent GB-1465787-A (GB)
Title: Sewing machine case
IPC: D05B77/00
Filed: 1974-03-14
Abstract: 1465787 Sewing machine case HUSQVARNA AB 14 March 1974 [16 March 1973] 11360/74 Heading A4B A case 1 for a sewing machine with a carrying handle 12 attached comprises an aperture 2 through which the handle extends when the case houses the machine, at least one locking element 3 slidably received in the case for movement towards and away from the aperture, and means for biasing the or each locking element towards the aperture, the or each locking element being adapted to engage the handle when it extends through the aperture to prevent removal of the case from the machine. As described the case 1 carries two locking elements 3 each comprising a strip 4, slidable in a guideway 5 of the case, and a cover-plate 6 with a finger grip 7. Each element is urged by a spring 9 towards the aperture 2 against a stop 8, and when the handle 12 is passed through the aperture a wedge at the end of the element slides along the end of the handle and enters a recess 11 therein. The case is released from the handle by pulling the finger grips 7.
Patent GB-833851-A (GB)
Title: Antibiotic kanamycin derivatives
Filed: 1958-04-10
Abstract: The invention relates to the water-insoluble antibacterial condensation products of one mol. kanamycin and at least four mols. of a monocyclic aromatic mono-aldehyde especially one of formula <FORM:0833851/IV (b)/1> and <FORM:0833851/IV (b)/2> wherein R1 is hydrogen, chlorine, bromine, hydroxyl, alkyl or alkoxyl; R2 is hydrogen, chlorine, bromine, hydroxyl, alkyl, alkoxyl, nitro, di-alkylamino, or when taken together with R1 is methylene dioxy; and R3 is hydrogen, chlorine, bromine, nitro or alkyl.  Preferably, 4 to 10 mols. of the aldehyde are reacted with one mol. kanamycin in alkaline aqueous medium at 0-100 DEG  C.  A pH of 10 or higher and aqueous methanol are suitable.  Typical products are tetrasalicylidene kanamycin, tetraanisylidene kanamycin, tetra-o-hydroxybenzylidene kanamycin, tetra - p - chlorobenzylidene kanamycin, tetra - p - dimethylaminobenzylidene kanamycin, tetra-2-pyridine carboxylidene kanamycin, tetra-2-thiophene carboxylidene kanamycin and tetra-furfurylidene kanamycin.  The products are converted back to kanamycin by aqueous acid, e.g. sulphuric or acetic preferably below pH 4.0.
Patent GB-1402082-A (GB)
Title: Down-the hole hydropercussive device for use in drilling wells
IPC: E21B1/26
Filed: 1973-03-09
Abstract: 1402082 Boring earth &c SPETSIALNOE KONSTRUKTORSKOE BJURO GIDROIMPULSNOI TEKHNIKI SIBIRSKOGO OTDELENIA AKADEMII NAUK SSR 9 March 1973 [10 March 1972] 11505/73 Heading E1F A down-the-hole hydro-percussive drilling tool comprises a housing 1 slidably mounted on a hollow rod 3 and having a percussive mass 2 rigidly secured thereto, the interior 4 of the rod being in communication with an acceleration cavity 6 in the mass 2 and connectable to a source 5 of highly-pressurized liquid, a piston 9 being movable between two fixed stops 7, 8 on the rod and dividing the interior of the housing into two compartments 10, 11, the piston having ports 15 therein for providing communication between the two compartments. For cocking of the tool, the piston 9 is in its lowermost position and the ports 15 therein are closed by the stops. Pressurized liquid from a hydroaccumulator 5 enters compartment 11 via the hollow rod 3 and ports 14 therein, and forces housing 1 and mass 2 upwardly until a thrust pipe 16 therein urges the piston against the upper stop 7, the piston being held in this position by liquid entering a cavity 12 in the piston via ports 13. In this position pressure in the compartments is equalized by the piston ports 15 and the housing and mass are accelerated downwardly under the effect of liquid pressure in the cavity 6, and gravity. Following percussion a liner 18 falls downwardly abutting the piston to force it to its lowermost position once more. The drill string may be employed as the hydroaccumulator.
Patent GB-659943-A (GB)
Title: Mops
IPC: A47L13/146
Filed: 1949-04-29
Abstract: 659,943. Mops. GREENLEAF, N. B. April 29, 1949, No. 11518. Convention date, Dec. 21, 1948. [Class 19] A self-wringing mop consists of a head secured to a handle, a sponge block releasably secured to the head on its underside and having a bottom working face presenting at the rear an edge displaced below said head, a presser plate having a pivotal connection at the rear of the head to swing about an axis fixed relative to the head and above the bottom working face and at right angles to the handle, and means to maintain the presser plate in a mopping position above and at an angle to the block, the relative positions of the pivotal connection and presser plate enabling the plate when swung from the mopping position to engage first the block at the rearward lower edge and then to compress the block in a direction forwardly and against the underside of the head. In the figures the head of the mop comprises a flat plate 1 to which is secured a screw socket 2 to receive the handle 3. At the rear edge portions of the plate 1 are turned up above the plane of the plate and are fixed into hinge panels. The mopping element 6 is formed of a highly absorbent sponge material, preferably of cellulose sponge, and is in the form of a quadrangular block having its upper surface 7 inclined rearwardly. Secured to the upper surface 7 is a plate 9 having rolled longitudinal edges 10 to receive the longitudinal edges of the mop head 1. The extending edges of the mopping element form a bumper around the edge of the mop. Secured to the upper forward longitudinal edge of the mopping element 6 is a longitudinal fabric strip 11, between the folds of which is a compressed fold of the sponge material 12. The fabric strip 11 and the plate 9 are adhered to the sponge material with suitable adhesive such as cellulose acetate. Secured to the rear of the mophead is a presser plate of arcuate or angular form which forms the wringing element. The presser plate is bent or curved near the longitudinal edge to provide a wide portion 20 for engaging the under surface of the mopping element when the presser plate is swung to the position of Fig. 3. Secured to the presser plate 15 is a handle 21 which is engaged by a spring clip 22 when swung to the inoperative position. Specifications 659,511 and 662,737 are referred to.
Patent GB-254451-A (GB)
Title: Improvements in convertible ladders
IPC: E06C1/32
Filed: 1925-05-04
Abstract: 254,451. Kennett, C. E. May 4, 1925. Ladders.-In a convertible long and step ladder of the type in which the hinge portions on the two ladder portions are provided with means to secure the ladder in the two positions, a platform 22 pivoted to the lowermost rung 23 on the upper ladder portion is adapted to be hooked to the top step 29 on the other ladder portion when used as a step ladder to provide an uninmpeded platform and to act as a stay to limit the spread. The hinge portions are provided with registering holes and arcuate slots for the reception of a pin for determining the two positions of the members.
Patent GB-1239832-A (GB)
Title: Improvements in or relating to straight bar knitting machines
Inventor: BLOOD RAYMOND
IPC: D04B15/88
Filed: 1968-03-08
Abstract: 1,239,832. Sorting knitted blanks. WILLIAM COTTON LTD. 26 Feb., 1969 [8 March, 1968], No. 11541/68. Heading B2H. [Also in Divisions B8; D1 and D2] A knitting machine which knits several garment blanks simultaneously deposits them on a conveyer which delivers them to separate parts of a collector. The conveyer advances in stages so that the blanks drop into compartments of a partitioned indexable drum, or one of a series of bags. Single blanks or garment sets may be thus conveyed.
Patent GB-974390-A (GB)
Title: Improvements in or relating to electron beam devices
IPC: H01J31/06
Filed: 1962-03-27
Abstract: 974,390. Cathode-ray tubes. WESTERN ELECTRIC CO. Inc. March 27, 1962 [March 31, 1961; May 26, 1961], No. 11572/62. Heading H1D. An electron beam device, e.g an encoder tube of the type suitable for use in pulse code modulation systems, comprises a beam target 28, Fig. 1, a divergent emission electron gun 16 for projecting an electron beam toward the target, the electrons of the beam having trajectories which diverge from a virtual source, means 17 between the gun and target for causing the beam to converge towards the target, and modulator means 27 adjacent the target on the side thereof facing the gun for deflecting the beam on to the modulator means in response to signals applied to the modulator means. The gun assembly, Fig. 2, comprises a cylindrical cathode 36 mounted within a cylindrical anode formed by an apertured anode disc 32 and an anode block 33. The electrons are further accelerated by an electrode 15, Fig. 1, positioned in front of the rectangular aperture 34, and the ribbon-shaped electron beam is focused on to the target by the electrostatic objective lens 17. The tilt of the plane of the ribbon shaped beam may be adjusted by the potential applied to the dynamic tilt correct rods 18, which are of tapered or frusto-conical form, and the beam may be angularly deflected by deflection plates 21, a shielding member 19 serving to isolate the tilt-correction field from the deflection field. A diverging lens 22, 23 is provided to increase the sensitivity of the deflection plates 21, and a code plate 26 is located in front of the target structure. The target structure comprises a beam modulator, Fig. 5, formed by a set of conductive vanes 41 aligned with the digit columns of the code plate 26 and with the target electrodes 42, alternate vanes being electrically connected to plates 39, 40. With no potential difference between the plates 39, 40, the beam passes unintercepted to the target electrons, a sufficient potential applied to the plates enables the modulator to collect the portions of the beam passing through the apertures of the code plate.
Patent GB-383184-A (GB)
Title: Improvements in or relating to operating sliders for interlocking fasteners
IPC: A44B19/30
Filed: 1932-04-22
Abstract: 383,184. Sliding - clasp fasteners. PRENTICE MANUFACTURING CO., G. E., New Britain, Connecticut, U.S.A.-(Assignees of Legat, R. C. ; of Prentice Manufacturing Co., New Britain, Connecticut, U.S.A.) April 22, 1932, No. 11605. Convention date, Jan. 6. [Class 44.] In sliders 5 for a sliding-clasp fastener having a slider retaining-member adapted to be moved to and from the fastener elements 3, 4 by means such as cam lugs 18 on a pull-tab 15, the retaining-member acts as a double wedge having a cam action such that in operation it wedges between two elements and locks the slider in position. The retaining-member may have symmetrically curved surfaces and may be a rotatable spherical ball 20 accommodated in an aperture 9 in the front wing 6 of the slider and in a recess 14 in a member 10 whereon the pull-tab 15 is pivotally mounted. In the locking position, the cam lugs 18 engage the recess 14 and the ball 20 which is thus forced down between two fastener elements so as to lock them against the rear wing 7 of the slider. The cam action of the retaining-member is such that if it is forced down on top of one element, it tends to move the slider until it enters between two elements. The rear wing may have an enlarged aperture so that the two elements are forced therein in the locking position, or the wing may have a projection which enters between the fastener elements and thus co-operates with the retaining- member. The member 10 is secured by a lug 11 and by a reduced portion 12 engaging a lug 13. The portion 12 and lug 13 are accommodated in a recess in the pull-tab in the locking position.
Patent GB-223945-A (GB)
Title: Improvements in, or in connection with, the jointing of railway rails
IPC: E01B11/08
Filed: 1923-05-01
Abstract: 223,945. Lee, D. H. May 1. 1923. Rail joints have reversible outer fishplates 2, Fig. 2, provided with flanges 6, 7 and ridges 5 to lock the heads of the fishboats, and inner fishplates 3 having a bulb head 11 and flange 10. In the case of step-up joints, Fig. 3, the inner fishplate is flangeless and both fishplates are symmetrical about the mean centre line of the two rail webs, and they may have a thickened web 17 at the joint. Specification 183,355 is referred to.