baber/WOPTO huggingface dataset:
Patent GB-923307-A (GB)
Title: Coal-winning and conveying installation
IPC: E21C35/12
Filed: 1962-02-05
Abstract: 923,307. Mineral - mining installations. GEWERKSCHAFT EISENHUTTE WESTFALIA. Feb. 5, 1962 [Feb. 11, 1961], No. 4352/62. Class 68 (1). In a coal-winning and conveying installation the cutting and loading unit 11, 12 is stabilized and hauled along the face side of a face conveyer by a plate structure of three interconnected parts 13a, 13b 13c that extends beneath the conveyer and is connected to a haulage chain in a duct along the goaf side of the conveyer by a pair of bosses 14 secured to the outer of the plate parts and extending up into the duct. A chain 25 extends between the two bosses to distribute tensions between the extremities of the machine when under load. This chain carries a permanent magnet 26 for operating at the ends of the run switches for reversing the direction of travel of the cutting and loading unit. Floor-clearing blades may be mounted on the parts 13a, 13b of the plate structure.
Patent GB-1492620-A (GB)
Title: Ortho-quinonediazide light-sensitive copying material
IPC: G03F7/004
Filed: 1975-01-31
Abstract: 1492620 Photographic quinone-diazide copying material FUJI PHOTO FILM CO Ltd 31 Jan 1975 [1 Feb 1974] 4420/75 Heading G2C A light-sensitive copying material comprises a copying layer containing (i) a light-sensitive o-quinone diazide, e.g. an o-napthoquinonediazide sulphonic acid ester of a hydroxy-diphenyl or hydroxybenzoquinone or of a condensation product of acetone and pyrogallol, and (ii) a secondary or tertiary amine of boiling point not less than 200‹C e.g. tri-n-butylamine, N-methylethanolamine, N, N-diethylaniline, tri-isopentylamine or hexamethylene-tetramine, the amine being present in an amount of from 0.005 to 1 part by weight per part of said o-quinone diazide. On imagewise exposure and development with aqueous alkali, exposed areas of the copying layer are removed to form a positive image; while on imagewise exposure, heating to 30 -200‹C, overall exposure and development with aqueous alkali, areas unexposed in the imagewise exposure are removed to give a negative image.
Patent GB-835454-A (GB)
Title: Improvements relating to seasoning timber
IPC: F26B3/34
Filed: 1957-02-08
Abstract: 835,454. Drying timber. STUBBER, J. H., ROWLAND, L., and PLESS, J. H. Jan. 24, 1958 [Feb. 8, 1957; July 12, 1957], Nos. 4463/57 and 22194/57. Class 34(2) Timber is seasoned by subjection to intermittent application of radio frequency dielectric heating whilst maintaining control of the rate of evaporation from the timber surfaces. Planks 9, Fig. 1, are dried whilst moving in a circular path on a wire conveyer 1 being alternately subjected to dielectric heating from electrodes 8 and spraying with water or an aqueous solution of sodium chloride, glycol, glycerol or urea from nozzle heads 10. The electric generator 6 is stationary. Heating cycles may be 30 seconds "on" three minutes "off" or one minute "on" one minute "off". In a modified apparatus, the planks are stacked and covered by a silica bonded glass fibre envelope 12, Fig. 3, and evaporation is controlled through a steam vent 13. A steam supply inlet 14 may be provided to aid reduction of surface evaporation rate. In another application, the electrodes 8 are placed within the envelope 12. The timber may be arranged radially in single planks or stacks may be mounted in a closed container in which radially arranged electrodes rotate. The electrodes may be arranged as staggered spaced segments. Alternately, a timber stack may be situated in the gap between electrodes which move up and down past the sides of the stack, or again the timber may be moved whilst the electrodes are stationary. Specification 748,134 is referred to in the Provisional Specification.
Patent GB-252075-A (GB)
Title: New or improved rotary pump or motor
IPC: F04C2/352
Filed: 1925-02-18
Abstract: 252,075. McCallum, J., and Anderson, H. P. H. Feb. 18, 1925. Fixed-abutment type; packing drums and vanes; valve-gear; valves, distributing; balancing moving parts.-Rotary pumps or engines have a vane 11, Fig. 1, turning on a fixed centric pin 14 and sliding through a bearing 10 which rocks in an eccentric rotor 3. The vane 11 has a counterweight 13 and is fitted with end and side packing-strips 12 pressed out by springs and the bearing 10 is also provided with packing. The inlet and outlet valves 16, 17 are timed and driven by the rotor. The inlet and outlet pipes are provided with reversing-valves. When used as a pump, the rotary valves are dispensed with and the outlet fitted with a non-return valve. The end covers and casing are each made in two parts. Reference has been directed by the Comptroller to Specification 23150/10.
Patent GB-211882-A (GB)
Title: Improvements in condensing apparatus especially adapted for refining oil
IPC: B01D5/00
Filed: 1924-02-21
Abstract: 211,882. Leach, C. H. Feb. 21. 1923, [Convention date]. Column stills; surface condensers; hydrocarbons, distilling.-A condenser for use in distilling oil is so arranged that different cooling liquids (including the incoming oil to be distilled) can be used to cool different portions and the condensate can be taken off in fractions condensed at different temperatures. Preferably several stills are employed, working at different temperatures, each is fitted with a separate condenser and the incoming oil flows as cooling fluid through the condensers in series. The cooling-liquid flows through tubes 12 connected at their lower ends to a plate 18 and at their upper to a series of separate headers 24 supported by the tubes only so as to allow of expansion. The tubes are enclosed in a casing 10 which the vapour enters by an opening 40 and leaves by an opening 98. Below the plate 18 is a chamber divided by partitions composed of flanges 32 on the plate 18 and flanges 104 on bottom plates 100, 102 so that by changing the plates 100, 102 different arrangements of chambers may be provided. In that shown, the tubes 50 connected to the last of the headers 24 are traversed by water entering the chamber 82 and leaving the chamber 96 by an opening 94, the other tubes being traversed by oil. The vapour is caused to take a circuitous course over the cooling tubes by baffles 27, 28 and the lower portions of the tubes are separated by flanges 70 on the plate 18 forming chambers in which the fractions of condensate condensed in the different sets of tubes are collected, and from which they can be discharged separately through openings 72. The tubes are connected to projections on the plate 18 to save them from corrosion by condensate collecting on the plate.
Patent GB-956666-A (GB)
Title: Photographic camera with built-in flashlight apparatus
IPC: G03B15/04
Filed: 1963-02-04
Abstract: 956, 666. Photographic cameras with built-in flashlights. AGFA A.G. Feb. 4, 1963 [Feb. 6, 1962; May 17, 1962], No. 4515/63. Heading G2A. A photographic camera with built-in flashlight apparatus has a reflector, one part of which is fixed in the camera and at least one other part which is relatively movable from a closed position substantially within the general outline of the camera to a working position in which it or they supplements or supplement the fixed part. The movable part 6, Fig. 2, may be mounted on a hinge 5 into and out of working position. Alternatively, the movable part 111, Fig. 5, of flexible foil is slidable in guide grooves 108, 109. In another embodiment, two movable reflector parts 108, 109, Fig. 8, slide in guide grooves 126, 127.
Patent GB-847695-A (GB)
Title: Apparatus for applying adhesive to carton blanks
Inventor: THOMAS JOHN WILLIAM
IPC: B31B50/62
Filed: 1958-02-12
Abstract: Apparatus adapted to apply adhesive to carton blanks comprises a bath 2 containing adhesive, a doctor roller 1 dipping into the <PICT:0847695/III/1> adhesive and rotating at a speed insufficient to cause foaming thereof, a transfer roller 9 spaced out of contact with the doctor roller but adapted to make contact with the coating of adhesive on the up-run side thereof, an applicator roller 25 in contact with the transfer roller on the down-run side thereof, both the transfer roller and the applicator roller rotating at the same peripheral speed, which is higher than that of the doctor roller, and means for progressively advancing a series of carton blanks past and in contact with the applicator roller at a speed substantially the same as the peripheral speed of the applicator and transfer rolls. As shown, the spacing between the rollers 1 and 9 is made adjustable by rotatably mounting the roller 1 between brackets 4 pivoted to the arms 5 of angle brackets 6.  The roller 9 is rotatably mounted between the dependent arms 10 of the brackets 6, and the brackets 4 and arms 10 are urged apart by a spring 18 surrounding a screwed rod 15; the latter is provided with a hand wheel 17 and may be screwed into or out of one of the arms 10 to control the separation of the rollers 1 and 9.  The separation of the rollers 9 and 25 is also adjustable, the arms 10 being pivoted on the frame 12 of the machine at 11, and their position controlled by a handle 22 operating a screw rod 21.  The carton blanks are fed between the applicator roller 25, which may carry stencil pads 33, and a back-up roller 32, by a pusher device 35 comprising an arm 36, oscillated by a cam 39 fast on the shaft of the roller 25.  The various rollers are interconnected by chain drives operated by a motor 31, the rollers 9, 25 and 32 being driven at the same peripheral speed, and the doctor roller 1 at a lower one.
Patent GB-283359-A (GB)
Title: Suction hat and coat hook
IPC: A47G25/06
Filed: 1927-02-18
Abstract: 283,359. Elliott, H. G. Feb. 18,1927. Hooks fixed to walls and flat surfaces.-A portable coat hook comprises a hook secured to a suction pad and having a hinged strut secured thereto. The hook has a bent end D embedded in a rubber suction pad E and at A is hinged a strut C which is of triangular form.
Patent GB-1161947-A (GB)
Title: Controlling the Focus of Cathode Ray Tube Beams
IPC: G06V10/10
Filed: 1967-01-31
Abstract: 1,161,947. Cathode-ray tube circuits. INTERNATIONAL BUSINESS MACHINES CORP. 31 Jan., 1967 [16 Feb., 1966], No. 4573/67. Heading H4T. The focus of the beam of a cathode-ray display tube is controlled automatically in accordance with a signal derived from the phosphor " noise " component in the light output of the screen. The " noise " component, which is due to the finite size of the phosphor particles, has a comparatively low value when the beam is relatively out of focus, due to the averaging or integrating effect of a large beam spot whereas when the beam is sharply focused, the point-topoint difference in phosphor sensitivity is accentuated and a relatively large noise signal is produced. In the described embodiment, a signal derived from the light output of tube 10 via a photo-multiplier 11 is supplied to an operational amplifier 12 having a pass band of 200 kc./s-1. Me/s., the output from which is filtered by means of the arrangement of diode D1, capacitor C1 and resistors 13, 14. The filtered signal is then fed directly and via a delay line 15 to a voltage discriminator 16 which produces an output voltage having positive polarity when the filtered signal is increasing, whereas, when the latter signal is decreasing, a negative output voltage is produced. Such output voltage is fed to a trigger 17 which is sensitive only to a negative polarity input indicative of a decreasing noise signal and therefore of a defocused condition of the beam. Trigger 17 then operates to cause the focus voltage, which is supplied to the tube focusing electrode from the resistor and capacitor network 20, 22, 23 and C2 to vary the focus in such a sense that the noise signal is increased (i.e. to improve the focus). The resulting positive output voltage from discriminator 16 has no effect on the state of trigger 17 so that the focus voltage continues to change in this direction within the limit determined by one of the discriminators 18, 19. When such limit has been reached, the direction of change of the focus voltage reverses and the resulting negative polarity output of discriminator changes the state of trigger 17 so that the cycle is repeated. The time of this cycle (about 100 microseconds) is determined by the time constant of the network element 20, 22, 23 and C2 and the focus voltage is combined with a dynamic focus control voltage from a function generator 25 to correct for non-uniform beam deflection fields and for a non-flat screen surface.
Patent GB-212247-A (GB)
Title: Apparatus for mechanically solving spherical trigonometrical problems
IPC: G01C21/02
Filed: 1924-02-25
Abstract: 212,247. Monney, C., R. March 3, 1923, [Convention date]. Spherical-trigonometry calculators.-In an instrument for determining latitude, azimuth &c. comprising two pairs of arcs for representing the co-ordinates of a star in the altazimuth and equatorial systems and bearing cursors connected together to represent the star's position, the base 2 (the meridional plane) supports rigidly an arc 1 representing the visible horizon and pivotally an arc 3 representing the star's vertical circle. Rotatably mounted at 7 is a spider the long arms 7<b> of which may be set to represent the polar axis and for this purpose carry a vernier 11 cooperating with a scale 10. The spider supports two arcs 6, 9 at right angles corresponding with the celestial equator and the hour circle respectively, and the arcs 3, 9 are provided with cursors 5<a>, 5<b> connected by a pivot 12.
Patent GB-655170-A (GB)
Title: Envelope detector for periodically varying voltage
IPC: G11C27/02
Filed: 1948-02-19
Abstract: 655,170. Valve circuits. BENDIX AVIATION CORPORATION. Feb. 19, 1948, No. 4958. Convention date, Feb. 28, 1947. [Class 40 (vi)] A gating circuit comprises a bi-directional electronic switch in which a pair of thermionic valves each having at least a cathode, anode and control electrode have a control signal applied to their control electrodes, the valves being normally non-conducting in the absence of the control signal. The Figure shows a circuit in which valves 20 and 30 are period. ically unblocked by the application of the control voltage pulses 42 to their control grid circuits via the isolating transformer 14. The valves 20, 30 are thus rendered conducting during the peak periods of the input wave. form 40 and capacitor 17 is charged to a given peak voltage of waveform 40 this charge being held at a constant value until the valves 20, 30 are unblocked by the next control pulse. Capacitor 17 then charges or discharges through either valve 30 or 20 depending upon the amplitude of the next voltage peak in the input waveform 40. The voltage 44 across capacitor 17 which is applied to the cathode follower stage 11 thus follows a step waveform.
Patent GB-633817-A (GB)
Title: Improvements in or relating to chuck-like tool holders
IPC: B23B31/117
Filed: 1948-02-20
Abstract: 633,817. Sockets. NORLANDER, H. G. Feb. 20, 1948, No. 5106. Convention date, Nov. 14, 1947. [Class 83 (iii)] A socket comprises one or more coil springs 3 through which the tool is adapted to be passed, the spring or springs each being secured at one end to the socket body 1 and at the other end to a sleeve 4 rotatably mounted on the socket body, the spring or springs being so arranged that the socket is self-tightening while rotation of the sleeve relatively to the socket body to uncoil the spring or springs enables the tool to be inserted or removed.
Patent GB-306149-A (GB)
Title: Improvements relating to record-card controlled statistical machines
Filed: 1929-02-15
Abstract: 306,149. Tauchek, G. Feb. 17, 1928, [Convention date]. Statistical apparatus.-In a tabulating machine printing on the record sheet is effected by transfer rollers after these rollers have taken the impression from the cards upon which the data are printed in transfer ink. In a modification the transfer is effected photographically. The transfer roller 7, moistened from the roller 4 and trough 5, receives the impression as the card passes from a stack 2 to a card-reading device 8 and transmits it to a record sheet at 10. Excess ink is removed from roller 7 by rollers 12 on the return movement. The device 8 of the usual tabulating machine 9 coacts with the perforations of the card, Fig. 2, to control the printing bars 11, the script of the card being taken by the roller 7. In a modification, images of the script are projected on to a sensitized part of the record strip 10. In a further modification the type bars 11 are replaced by stencils through which light is projected to a sensitive record sheet.
Patent GB-1038702-A (GB)
Title: Plastic tip projectile
IPC: F42B12/78
Filed: 1964-02-06
Abstract: 1,038,702. Non-explosive bullets. IMPERIAL CHEMICAL INDUSTRIES Ltd. (Canadian Industries Ltd. of Canada). Feb. 3, 1965 [Feb. 6, 1964], No. 5136/64. Heading F3A. An expanding bullet comprising a hard metal jacket 1 and a core 2 of malleable metal has a tip 4 of resilient, mouldable, synthetic, thermoplastic material, e.g. polyethylene or nylon. The jacket 1 may be made of gilding metal and the core of lead. The bullet may be assembled and moulded in a series of dies. In the first die a lead cylinder is dropped into a tube of gilding metal having a closed end and a punch is lowered to form the cylinder to the shape of the tube.. The tube is then transferred to a swaging die (12) to shape the nose of the bullet. A square sectioned pin (14) is used to form a recess in the nose. The tips 4 may be placed in sockets (15) in a plate (16), the jacketed bullets being placed in a holder (17) and on depressing a block (19), the tips 4 are forced into the bullets. In a modification, the tip is moulded in a cavity (31) (Fig. 8, not shown) formed in the bullet nose, the molten thermoplastic being introduced through a channel (30) in a plate (27) while the bullet is supported in a block (28). Lead alloys containing tin or antimony may be used for the core and alloys such as coppernickel and plated or clad steel may form the jacket. Suitable thermoplastics for the tip are polyolefines, polyamides, polystyrenes, vinyl, acrylonitrile butyldiene styrene and polyurethane polymers.
Patent GB-306103-A (GB)
Title: Method of producing fertilizers
IPC: C05B11/06
Filed: 1929-02-15
Abstract: 306,103. Stockholms Superfosfat Fabriks Aktiebolag. Feb. 15, 1928, [Convention date]. Manures.-Two fertilizers, one consisting of calcium phosphate soluble in citric acid and the other of a double salt of ammonium sulphate and ammonium nitrate having the formula. (NH4)2SO4 2NH4NO3 which may contain potassium sulphate are prepared from raw phosphate or phosphatecontaining materials by treatment with a mixture of sulphuric and nitric acids, followed by treatment with ammonium carbonate or ammonia and carbon dioxide. Di- or tri-calcium phosphate in admixture with calcium carbonate is obtained as a precipitate. The liquid consists of a solution of ammonium sulphate and nitrate. The proportions of sulphuric and nitric acids used to treat the raw phosphate are arranged so that the solid salt obtained by evaporation has the formula (NH4)2SO4 2NH4NO3. To avoid decomposition of nitric acid, the treatment of the raw phosphate may be carried out in presence of alkali sulphates such as potassium or ammonium sulphate. When potassium sulphate is used, it remains in admixture with the ammonium salts in the fertilizer.
Patent GB-848553-A (GB)
Title: Improvements in electrical signalling circuits employing transistors
Inventor: BEAUFOY RAYMOND
IPC: H03F1/34
Filed: 1957-02-15
Abstract: 848,553. Transistor amplifying circuits. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. Feb. 14, 1958 [Feb. 15, 1957], No. 5181/57. Class 40(6). In a circuit for inverting an input waveform applied at terminal I, the transistor T is operated in the common emitter connection with linear and derivative feedback. The feedback between collector and base comprises the capacitor C2 and resistor R4. The input is applied over the network R1 C1 to the base of the transistor, the capacitor Cl being chosen to give an adequate response with the poorest transistor to be used in the circuit.
Patent GB-1103059-A (GB)
Title: Improvements in or relating to temperature sensitive substances
Inventor: PRIME GEORGE ROBERT
IPC: G01K11/12
Filed: 1967-02-02
Abstract: 1,103,059. Temperature indicators. ROLLS-ROYCE Ltd. Feb. 2, 1967, No.5195/67. Heading G1D. An additive for a temperature sensitive paint of the type which usually contains lead chromate, magnesium carbonate, and silica comprises a solution containing ferrous chloride, hydrochloric acid, methylated spirits and ethyl silicate. When such an additive is mixed with a temperature sensitive paint of the above type, together with suitable thinners, it was found to improve both the bonding and the erosion resistance of the paint.
Patent GB-542238-A (GB)
Title: Improvements in fluid mixers
IPC: F02M29/02
Filed: 1940-03-20
Abstract: 542,238. Centrifugal mixing machines. WOLFE, G. H. March 20, 1940; No. 5231. Convention date, March 27, 1939. [Class 23] A centrifugal mixer for fluids used, for example, in the preparation of explosive mixtures has a centrifugal rotor 2 supplied with the separate fluid components through conduits 6, 7 containing valves 16, 15 which can be operated to vary the ratio of the components supplied. The rotor, which works in the casing 1, has blades 3 and discharges the mixture to the outlet 5. The linkage connecting the valves 15, 16 is shown in Fig. 2 and is operated by the control rod 8. The arm 10 of the valve 16 is joined by a link 11 and pin 11<SP>1</SP> to the slotted link 9 of the valve 15. By means of the rod 13, bell crank 12', and a rod 12, the pin 11' can be set in any position in the slot in link 9 thus fixing the relationship of the two valves before operation.
Patent GB-288781-A (GB)
Title: Improvements relating to circuit breakers for use in alternating current electric circuits
IPC: H01H9/34
Filed: 1927-02-24
Abstract: 288,781. Barbour, R. H. Feb. 24, 1927. Arc-rupturing devices for rupturing an A.C. circuit at the zero of the cycle and for preventing the re-establishment of the interrupted circuit after parsing through the zero value. The movable contact b is pivoted to a lever c which is operated by a. cam e on the handle spindle f raising a roller g. Immediately above the contacts a, b is a series of copper plates h which are insulated and separated from one another by being mounted in grooves in insulating side plates of arc-resisting material located between the cheeks of a series blow-out magnet m, which may however be dispensed with. On rupturing the circuit, the arc is blown (or rises if there is no magnet) against the plate h which is immediately above the point of separation, and as the contact b moves to the right, the arc successively engages, and is divided up by, the succeeding plates h until the zero of the cycle is reached and the arc extinguished. The arc cannot thereafter re-establish itself, as the last plate h to be engaged by the arc was relatively devoid of flame or ionized gas and the current would also have to jump across the remaining gaps in series between the plates h. Moreover, at zero current, the contact b is still moving so that, before reestablishment can have been effected, it will have travelled to a point under a further and comparatively cool plate. The speed of movement is such that an interval of at least a halfcycle elapses between the moment of separation and the moment the last plate is reached, but this speed may be modified to cover a full cycle in case the first zero value is insufficient finally to rupture the arc. Both contacts may be arranged to be movable in opposite directions, each under a series of plates, and the contacts &c. may be oil-immersed.