baber/WOPTO huggingface dataset:
Patent GB-1495389-A (GB)
Title: Apparatus for providing time reference signals
IPC: H03K5/1536
Filed: 1974-01-31
Abstract: 1495389 Generating time reference signals UNITED KINGDOM ATOMIC ENERGY AUTHORITY 22 Jan 1975 [31 Jan 1974] 04665/74 Heading H3P A time reference signal is generated, from a pulse, Fig. 1 (not shown) comprising a packet of electrical oscillations, by detecting the first negative-to-positive zero crossing of the packet waveform succeeding a negative excursion whose peak value has exceeded a reference value (26, Fig. 1), circuitry, Figs. 2(B), 4 (not shown) being provided to ensure that the time reference signal is not utilized unless the integrated area of all negative excursions of the packet, representing packet amplitude, exceeds a predetermined limit set to ensure that a utilized time reference signal is produced at the first negative-to-positive zero crossing of the packet waveform. The packet waveform is amplified at 22, an automatic gain control comprising output amplitude detector 29 and comparator 31 with reference input VR tending to keep the average output level, for a plurality of received packets, constant, strobe 25 ensuring that the circuitry is active only for a time period embracing the expected arrival time of each packet. The negative-going excursions are integrated by network (34, Fig. 2(B)), whose time constant substantially exceeds the duration of one packet, but is less than the inter-packet duration, the integrator output, should it exceed a pre-set value for any one packet, operating trigger (35) to enable use of the timing signal generated by the packet. The packet is produced by a transducer receiving an ultrasonic pulse from a transmitter (not shown), the transit time in each of two opposed directions along the same path in a fluid being determined, the time difference representing the path direction component of fluid velocity, see Specification 1,422,791, only packets which have operated the trigger (35) being utilized in the measurement, AND gates (48, 49, Fig. 4) inhibiting use of the weaker ones.
Patent GB-867504-A (GB)
Title: Improvements relating to counting devices for use with knitting needles
Inventor: SANDERS NORMAN THOMAS
IPC: D04B37/00
Filed: 1958-02-13
Abstract: 867,504. Hand-knitting apparatus. NEEDLE INDUSTRIES Ltd. Nov. 21, 1958 [Feb. 13, 1958], No. 4681/58. Class 74 (2). [Also in Group XIX] A counting device for use in hand-knitting comprising a polythene sleeve 10 having viewing apertures 14 and two numeral-bearing sleeves 11 of polystyrene. The sleeve 10, which is provided externally with ribs 13 enabling the sleeve to be gripped, is provided internally with a web 15 connected to axially extending tubular spigots 16. Two pairs of plates 17,18, mutually at right angles, are provided internally of the spigots 16 to retain the counter on a handknitting needle. Annular flanges 19, 22 serve by frictional engagement to maintain the sleeves in the positions to which they are manually set, the numerals being on a recessed portion 23 of the sleeve 11 to prevent their erasure. The parts are held together by bending outwards the ends of the spigots 16 to form flanges 24. Specifications 867,503 and 867,505 are referred to.
Patent GB-1140190-A (GB)
Title: Ozone resistant polymer blends
IPC: C08L21/00
Filed: 1968-01-30
Abstract: 1,140,190. Rubber blends containing EPDM. GOODYEAR TIRE & RUBBER CO. 30 Jan., 1968 [28 Feb., 1967], No. 4697/68. Headings C3P and C3Q. A composition comprises (A) an ethylenepropylene terpolymer, (B) at least one of natural rubber, polychloroprene, polybutadiene polyisoprene, and styrene-butadiene rubber, the ratio of (A) to (B) being between 15: 85 and 35: 65 parts by weight; and, per 100 parts of (A) and (B), (C) 0À75-1À75 parts by weight of at least one sulphenamide accelerator, and (D) 0.5  -1.5 parts by weight of sulphur wherein the maximum amount of (C) plus (D) is 2.75 parts by weight. The composition may contain additional accelerators and such conventional compounding ingredients as process oil and black. The invention is particularly applicable to blends of EPT, SBR and natural rubber. The compositions may be used as tyre sidewalls and sidewall cover strips.
Patent GB-371309-A (GB)
Title: Improvements in or relating to buffers for railway and like vehicles
IPC: B61G11/10
Filed: 1931-03-04
Abstract: 371,309. Buffer for railway &c. vehicles. SPENCER, A. and SPENCER, MOULTON, & CO., Ltd., G., 2, Central Buildings, Westminster. March 4, 1931, No. 4723/32. Divided on 372,866. [Class 103 (v).] In a railway or like vehicle buffer of the kind in which a light spring receiving the initial shock telescopes within a heavier spring that absorbs the heavier final shocks, the latter spring is of the indiarubber type and is arranged to prevent metal-to-metal contact between the rear of the buffer head 10 and the forward end of the casing 1. In the construction shown in Figs. 1 and 2, the lighter spring 11 is a helical metallic spring extending between a centralizing casting 16 on the rear of the buffer head and a centralizing boss 13 on a plate 12 closing the rear end of the casing 1. At its rear end the plunger 7 is provided with flanges 8 which serve both to limit the forward movement of the plunger by abutting against a shoulder 9 on the casing, and also, after a predetermined inward movement Y of the plunger, to contact with a follower plate 29, whereupon the springs 11, 25 are compressed in parallel. Preferably, the spring 25 is of the compound rubber and metal type, and its maximum compression added to the distance Y is less than the initial distance X between the buffer head and casing. In cross section the casing 1 is preferably rectangular with a reduced forward portion 6 of cylindrical shape, while guide pockets 31 may be formed on the sides of the casing as described in Specification 372,866 for preventing rotation of the plunger when equipped with an oval head 10. If desired, the head 10 may be removably secured to the tubular portion of the plunger by a bayonet-joint connection comprising a series of projections on the rear of the buffer-head co-acting with corresponding lugs on the plunger body. In a modification, Fig. 5, the spring 11 is replaced by a compound rubber and metal spring 36, and a centralizing pin 38 projects a suitable distance into the interior thereof from the baseplate 12. Specification 26357/10, [Class 103 (v), Railway &c. vehicles, Draught &c. appliances for], is also referred to.
Patent GB-1497877-A (GB)
Title: Apparatus for generating high voltage for cathode-ray tub
IPC: H04N3/18
Filed: 1975-02-04
Abstract: 1497877 D.C.-D.C. converters for TV receivers HITACHI Ltd 4 Feb 1975 [4 Feb 1974] 4730/75 Heading H2F [Also in Division H1] Apparatus for generating high voltage for the cathode-ray tube of a TV receiver comprises a transformer the primary winding of which is divided into sections of differing winding density or differing numbers of turns and a secondary winding which is divided by means of diodes into sections, one section (or group of sections) being tuned to the fifth harmonic of the fly-back frequency while another section (or group of sections) is tuned to a further odd harmonic (e.g. the seventh harmonic) of the fly-back frequency. As shown in Fig. 7, the secondary is divided into five sections each separated by a diode, and tappings being connected to the phosphor 12, the shadow mask 13, the anode 14 and the focussing electrode 15. Fig. 6 shows the transformer construction which comprises a primary bobbin 10 having primary windings 3, surrounded by a secondary bobbin 11 having secondary windings 41 ... 43 separated by diodes 7, 8, 9. The tuning to the required harmonics is achieved by choosing the appropriate number of turns of primary and secondary sections, relative to the self capacitance. In Fig. 2 (not shown) the primary winding may be distributed into 8 sections having 3 different numbers of turns. The invention reduces the effect of variation of EHT voltage with changes in beam current.
Patent GB-990643-A (GB)
Title: Improvements in or relating to fuel cells
IPC: H01M8/04
Filed: 1962-02-07
Abstract: 990,643. Fuel cells. LEESONA CORPORATION. Feb. 7, 1962 [Feb. 17, 1961], No. 4784/62. Drawings to Specification. Heading H1B. A battery of fuel cells is supplied with gases from common manifolds and the electrolyte enclosures of each cell are sealed so that excess gas pressure will bubble through into the electrolyte until each cell is in equilibrium and further bubbling is prevented.
Patent GB-1061638-A (GB)
Title: Improvements in photomechanical printing processes
Inventor: BAKER ELTON NEWPORT
IPC: G03F7/30
Filed: 1964-02-05
Abstract: 1,061,638. Printing processes. JOHN DICKINSON SCHNEIDER Inc. Feb. 5, 1964, No. 4855/64. Heading B6C. [Also in Division G2] During the " run " of a printing press the material being printed is imprinted on a margin, selvedge or other waste portion with an image which allows the press operator to effect a visual assessment as to the sufficiency or otherwise of the ink on the plate and the degree of impression adjustment (if any) required. The plate is produced photomechanically and the imprint derives from a control strip " which is imaged on the plate during its manufacture such image taking the form of three sections A, B and C, Fig. 4, the first of which allows a visual determination of the state of exposure and development during the manufacture of the plate whilst tho second and third are employed during the printing run for the reasons referred to above. Under exposure or development will leave the areas S lighter than the areas R a vice versa result being apparent if the plate is over exposed or developed. Similarly if the imprint on the printed material shows lighter areas S on the section B too little ink is being supplied to the plate. Too much ink is being supplied if the areas R are lighter. If impression adjustment is necessary the section C will show slurred effects on the printed material and as the grouped parallel lines are arranged at right angles to each other the kind of adjustment, i.e. axial or circumferential, will be readily apparent.
Patent GB-111617-A (GB)
Title: A Curative Salve for Veterinary and Human Use.
Inventor: GRAY SAMUEL
IPC: A61K9/06
Filed: 1917-04-05
Abstract: 111,617. Gray, S. April 5, 1917. Ointments or salves.-A salve for skim diseases. for veterinary or human use, consists of a mixture of lubricating oil. such as lard oil or tallow oil, soft soap, sulphur, chlorate of potash or saltpetre, spirits of tar, and a suitable colouring matter.
Patent GB-103808-A (GB)
Title: Improvements in Air-pumps for Evacuating Air from Condensers, Refrigerating Plants and the like.
Inventor: LJUNGSTROM BIRGER
IPC: F01B25/00
Filed: 1916-04-03
Abstract: 103,808. Ljungstr÷m, B., and Ljungstr÷m, F. Feb. 3. 1916, [Convention date]. Aspirating apparatus, ejector.-Relates to apparatus, for withdrawing air from condensers and refrigerating - plants, having several steam ejectors in series each furnished in front thereof with a surface condenser for the steam, and consists in making the condensers of oblong shape and of decreasing sectional area. The compound ejector may consist of four steam ejectors 5 in series, drawing air from a surface condenser 1 and discharging it at the outlet 17. Associated with each ejector is a section of a tubular condenser 18 having baffles 14 with apertures 15, 16, water of condensation from the steam passing to intercommunicating vessels 8, from which, as also from a discharge pipe 11 in the first ejector, it may be led to the main condenser. The cooling-water for the condensers of the ejector is preferably taken from the pump withdrawing the main condensate, and passes in by the pipe 12 and around the baffles to the outlet 19.
Patent GB-548634-A (GB)
Title: Improved arrangement of the valves in multicylinder internal combustion engines having cupola combustion chambers
IPC: F02F1/24
Filed: 1941-04-15
Abstract: 548,634. Cylinders; valve gear. LANCIA & C. FABBRICA AUTOMOBILI-TORINOSOC. ANON. April 15, 1941, No. 4917. Convention date, April 17, 1940. [Classes 7 (ii) and 7 (vi)]  In an engine having cylinders 1, 2, 3, &c., the inclined overhead valves a<SP>1</SP> b<SP>1</SP>, a<SP>2</SP> b<SP>2</SP>, a<SP>3</SP> b<SP>3</SP>, are arranged with their axes in planes parallel to the longitudinal central plane of the engine, the valves of one cylinder lying in a plane to one side of the central plane, and those of the adjacent cylinder in a plane at the'other side of the central plane. The dome-shaped combustion chambers c<SP>1</SP>, c<SP>2</SP>, c<SP>3</SP>, or the whole cylinders, may also be laterally displaced from the central plane to the same side as the valves. The contiguous valves a<SP>2</SP>, b<SP>1</SP> and a<SP>3</SP>, b<SP>2</SP> are actuated by rockers g and levers f, while the end valves a<SP>1</SP>, b<SP>3</SP> are actuated by doublearmed levers f<SP>1</SP>. The spark-plugs h are all at one side.
Patent GB-435015-A (GB)
Title: Arsenate aluminate cement and method for the production thereof
IPC: C04B7/32
Filed: 1935-02-16
Abstract: Aluminium arsenate may be prepared by oxidizing arsenious oxide together with an aluminiferous material such as bauxite or clay in air, as by heating a sludge or moist mixture of the ingredients in a countercurrent of air in a rotating furnace, which effects oxidation and dries the mass.  Catalysts for the oxidation such as iron, manganese, or copper compounds, nitric acid, nitrates or nitrous fumes may be used.ALSO:A cement or cement mixture contains aluminium arsenate in admixture with lime, calcium silicate, Portland cement, aluminous cement or similar products rich in lime.  The aluminium arsenate p  may be prepared by oxidizing arsenious oxide, As2O3, together with an aluminiferous material such as bauxite or clay in air, as by heating a sludge or moist mixture of the ingredients in a counter current of air in a rotating furnace, which effects oxidation and dries the mass.  Catalysts for the oxidation such as iron, manganese or copper compounds, nitric acid, nitrates or nitrous fumes may be used.
Patent GB-1025709-A (GB)
Title: Resistance-capacitance type oscillators and selective amplifiers
Inventor: WIGAN EDMUND RAMSAY
IPC: H03F1/36
Filed: 1963-02-08
Abstract: 1,025,709. Amplifiers etc.; oscillators; frequency changers, MUIRHEAD & CO. Ltd. Jan. 23, 1964 [Feb. 8, 1963], No. 5132/63. Headings H3F and H3W. [Also in Division G1] An electronic oscillator or frequency selective amplifier in which the frequency of operation is determined by a resistance capacitance network in a positive feedback loop of an amplifier has a photo-sensitive element in the frequency determining network and means for varying the light falling on the element and therefore the frequency of oscillation, or operation, of the circuit. Fig. 1 shows one embodiment of a device for varying the intensity of illumination of a photo-sensitive element in which the mask 4 and an opaque disc 1 with transparent section 3 are interposed between a source of light and the photo-sensitive device, the rotation of the disc 1 controlling the light and therefore the operating frequency of the circuit. The mask 4 may be adjustable vertically to provide a zerosetting means. If a greater range of operation is required two discs geared to move in unison and with their transparent sections 3 crossing nearly perpendicularly may be provided, Fig. 3 (not shown), to give a variation of light intensity which is approximately the square of the variation provided by one disc alone. Alternatively the disc or discs may be replaced by film strips, Fig. 7 (not shown), one of which may have the frequency scale 38 photographically produced on its edge. The discs may also be replaced by a pair of polaroid plates one of which is turned relative to the other to modulate the light source. A low frequency oscillator circuit embodying the invention is shown in Fig. 10 in which photo-sensitive resistors 14 and 14<SP>1</SP> are subjected to the same illumination from a source 8 via a light modulating device not shown. The two photo-sensitive resistors may be replaced by a pair of fixed resistors having one photo-sensitive resistor connected between tapping points on the fixed resistors, in addition the push-pull output arrangement may be replaced by a transformer if the extreme low frequency range is not required (Fig. 5, not shown). The output signal of the oscillator may be modulated by providing a pendulum having an arcuate filter, opaque at its two extremities and linearly graded in optical density to transparency at its centre, arranged with the filter interposed between the light source and the mask in the frequency determining arrangement of the oscillator. When modulation is required the pendulum is maintained in oscillatory motion, the frequency of the swing being adjusted by adjustment of the pendulum bob weight. The light output of the source may be checked by having a further photo-sensitive resistor mounted to be illuminated by the light source and connected in a wheatstone bridge circuit which is balanced when the illumination is correct, the bridge output may be connected to automatically maintain the light output correct.
Patent GB-1331900-A (GB)
Title: Method of manufacturing cadmium mercury tetrathiocyanate monocrystals
IPC: C01G/
Filed: 1972-02-04
Abstract: 1331900 Cadmium mercury tetrathiocyanate crystals SEIMENS AG 4 Feb 1972 [4 March 1971] 5258/72 Heading C1A Cadmium mercury tetrathiocyanate monocrystals are prepared by crystallization from a supersaturated solution of cadmium mercury tetrathiocyanate in a mixture of water and an alcohol (e.g. ethanol) and separation of the so formed monocrystals from the mother liquor. The supersaturated solution may be produced either by reducing the proportion of one of the solvent mixture components or by lowering the solution temperature.
Patent GB-329372-A (GB)
Title: An improved shoe cleaning accessory for the running boards of motor vehicles and for like purposes
IPC: B60R3/04
Filed: 1929-02-18
Abstract: 329,372. Row, J. Feb. 18, 1929. Boots and shoes, cleaning.-A shoe-cleaning accessory for the running boards of motor vehicles and for similar positions comprises a wiper carried in a frame supported for pivotal movement and adapted to lie underneath the running board when not in use, and be swung outwardly when required for use, means being provided to hold the wiper in either the operative or inoperative position. In the construction shown, a frame a carrying brushes b, c, d, p is connected to an arm e pivotally mounted at f beneath the running board. The arm is in two parts hinged at e<1>, one part passing through a slot h<1> in a quadrant h. One or two notches h<2> mav be formed in the slot to retain the frame in position. A spring i and a spring-pressed plate k are also provided for the same purpose. In a modified construction the arm e is undivided and is urged by means of a coil spring to the inoperative position beneath the running board. A catch may be provided to hold the frame in the position for use and a cushion may also be provided to absorb the shock of the frame returning to its inoperative position.
Patent GB-1300242-A (GB)
Title: Improvements in and relating to web transporting arrangements
IPC: B41J33/518
Filed: 1970-02-04
Abstract: 1300242 Ink ribbon mechanism RICOH KK 4 Feb 1970 [20 Feb 1969] 5303/70 Heading B6F An ink ribbon 36 is fed between spools driven by ratchet wheels 4, 5 engaged by drive pawls 10a, 11a pivoted to a member 9 which is oscillated on operation of print mechanism (not shown), the feed mechanism including ribbon feed reversal mechanism actuated in response to engagement of a stop such as 37a with pins such as 34a, 35a on a sliding bar 30, the bar being connected to a bell crank lever 26 which acts through a bowed spring 29 on a pin 18 mounted on a pivotable member 23, the pin acting to disengage one pawl 10a or 11a from its respective ratchet wheel and to engage the other pawl with its ratchet wheel by pivoting L-shaped levers 16, 20 with the aid of springs 17, (21, Fig. 1), the levers 16, 20 having respective ends 16a, 20a which act as detent pawls for their respective ratchet wheels. Leaf springs (38a, 38b) engage the ratchet wheels 4, 5 respectively and act as brakes to prevent slackening of the ribbon.
Patent GB-875233-A (GB)
Title: Improvements in compressed gas discharge devices
Inventor: ROUSSET RENE PAUL
IPC: F17C7/00
Filed: 1959-02-17
Abstract: 875,233. Compressed gas containers. BRITISH OXYGEN CO. Ltd. Feb. 12, 1960 [Feb. 17, 1959], No. 5472/59. Class 8(2). The closure disc 6 of a compressed gas container 3 is punctured by a hollow pin 18 when a ferrule 12 to which the pin is secured is screwed into a tubular member 1 secured to the container neck 2 ; the ferrule 12 having an internal thread 20 whereby it may be screwed on to a gas receiving member e.g. a tyre valve in such a manner that the pin 18 is prevented from piercing the disc 6 until the tyre valve abuts a sealing washer 21 of the ferrule 12. This is effected by making the pitch of the internal thread 20 of the ferrule finer than that of the external thread 14 thereby the torque required to pierce the disc is greater than that required to screw the ferrule on to the valve.
Patent GB-409109-A (GB)
Title: Improvements in clamps for hose pipes and the like
IPC: F16L33/04
Filed: 1933-02-23
Abstract: 409,109. Band clips. HUNT & TURNER, Ltd., and PRITCHARD, F., Alma Street, Aston, Birmingham. Feb. 23, 1933, No. 5499. [Class 44.] A band clip 20 for hose pipes and the like carries at one end 21 a tangential screw 26 co-operating with a member 28 which engages with one of a number of projections 24 on the other end 23 of the band and is slidable in a guide 27 on which the screw 26 is mounted. The head of the screw is part spherical to cooperate with a corresponding recess in a washer 31 and to permit a slight rocking movement to disengage the member 28 from the end 23 of the band when the member 28 is moved to the opening 30 of the guide 27. The screw 26 is retained in the lug 25 by a slotted member 33 engaging with a groove in the screw. The parts 28 and 23 may be pressed into engagement by a spring 29 or by spring tongues on the end 21 of the band. The guide 27 may be integral with or welded to the band. In a modification, Fig. 7, the sliding member 43 is freely mounted at thehead of the screw which engages with a nut 38 mounted in a bearing 37 on the guide 22. A lug 40 co-operates with a groove 39 to prevent rotation of the nut with the screw while permitting a slight rocking movement in the plane of the clip. The member 43 is retained on the screw by a slotted member 45 which serves also to engage with slots 44 in the band. The band may be held adjusted while the member 28 or 43 is moved to engage the band 23 at a fresh point, by a roller 49 sliding in a wedge-shaped casing 48.