baber/WOPTO huggingface dataset:
Patent GB-1145800-A (GB)
Title: Improved extrusion apparatus
Inventor: GOULD GORDON EUGENE
IPC: B29C48/515
Filed: 1967-06-09
Abstract: 1,145,800. Screw extrusion machines. DOW CHEMICAL CO. 9 June, 1967, No. 26646/67. Heading B5A. [Also in Division B1] A screw 21 in an extrusion cyclinder 11 comprises a hollow cylindrical cavity 26 divided into heat exchange zones by a plug 33 which selectively engages and disengages a wall of the cavity to vary the respective sizes of the zones as required. Each zone 28, 29 is served by inlet and outlet conduits, those for the second zone 29 being coaxially disposed within those for the first zone 28. The plug 33 comprises a fixed part 34 attached to the outlet conduit 31 of the second zone, an expansible sealing ring 38 and a part 36 screwingly engaged on the conduit 31. In operation, to adjust the position of the plug, a packing assembly 50 is loosened and a conduit 42 is moved inwardly until a cam 44 thereon engages a rotating element 40 on the part 36 when the part 36 is rotated until the ring 38 is freed from the wall of the cavity and the plug is free to slide. The conduit 31 is then adjusted to a desired position and the conduit 42 is slid to engage elements 44 and 40 to rotate the part 36 and nip the ring 38 between surfaces 35, 37 when it is expanded and sealingly engages the wall once more. In a modification, Fig. 2-4 (not shown), the plug comprises a conduit (66) with an externally threaded end (67) to which is attached a shoulder part (68) and a cam part (69) which locates with a part (75) an expansible ring (71). A frusto-conical surface (76) on the part (75) engages arms (79) of a cavity engaging member (78). In operation, the conduit (66) is positioned in the screw internal cavity and a second conduit is placed therearound and engages in grooves (80) of the member (78). Rotation of conduit (66) causes arms (79) to ride up surface (78) and engage the cavity, which is then engaged by the sealing ring on continued rotation.
Patent GB-424220-A (GB)
Title: Improvements in or relating to the control of sources of illumination in cinematograph projectors
IPC: G03B21/20
Filed: 1933-09-28
Abstract: 424,220. Kinematograph projectors. KOLB, O. K., Beverley Court, Wellesley Road, Chiswick, London. Sept. 28, 1933, No. 26702. [Class 97 (i)] [See also Group XXXV] A grid-controlled discharge tube or valve controls the picture illumination current and is itself controlled by the film or the film feeding mechanism; the control means may be responsive to desired film-speed changes, or to undesired changes, and may also control other lamp, motor, &c. circuits. The valve may be of the type known under the Registered Trade Mark " Thyratron " and two such valves may be used in push-pull. The Figure shows a control circuit in which the grid of a " Thyratron " (Registered Trade Mark) valve 1 is variably biassed by a battery 9 and potentiometer 8. Alternating current is supplied to the anode from input terminals 2, 3, by a transformer 6, and a transformer 7 having a large reactance is provided in the circuit to lamp terminals 4, 5. A switch 10 in the grid circuit may be operated, to vary the current passing to the lamp, by a film-controlled lever, by a centrifugal lever mechanism coupled to the spindle of a sprocket driven by the film, or by other mechanism. Alternatively, metal clips on the film may pass brushes to control the circuit, and such clips may be provided near the ends of the film. The picture light may be cut off during each film shift by a lever mechanism coupled with the maltese cross or other intermittent mechanism, by metal clips on the film, or by means of the film perforations, or photographs thereof ; the perforations &c. may pass across a light beam falling on to a light-sensitive device, the output from the circuit of such device being used to control the grid circuit. The discharge device may be housed in a single unit with a sound amplifier, and the switches for the motor and the lamp circuits may be arranged so that the lamp circuit cannot be completed until the motor circuit is completed.
Patent GB-602195-A (GB)
Title: Instrument for testing the size content of paper
IPC: G01N33/34
Filed: 1945-10-12
Abstract: 602,195. Determining 'physical qualities of materials ; batteries. WRIGHT, A. V., and KELVIN. BOTTOMLEY, & BAIRD, Ltd. Oct. 12; 1945, No. 26785. [Classes 37 and 53] An instrument for testing the size content of paper comprises a current meter 5 connected in series with flat electrodes 2, 3 between which the paper sheet 4 under test may be clamped. The plate electrodes are formed of dissimilar metals, e.g. bronze and zinc, one of the electrodes, e.g. the bronze electrode 2 being formed by a sintering process so that the surface of the sintered electrode may be kept wetted either by external wetting or from water in a container 1 percolating through the sintered metal. When the wetted electrode 2 is clamped'down on the paper 4, the device 2, 3, 4 functions as a galvanic cell and the size content of the paper is measured by the time taken for the meter 5 to reach a predetermined deflection with increasing dampness of the paper. Alternatively, the top electrode 2 may be of zinc and the bottom electrode 3 provided with a sintered metal, e.g. bronze, top and piped to a chicken fountain adjustable so as just to maintain wet the top of the sintered metal surface. The sintered electrode 2 may be of brass according to the Provisional Specification.
Patent GB-621479-A (GB)
Title: Improvements in or relating to television systems
IPC: H04N7/084
Filed: 1945-10-12
Abstract: 621,479. Multiplex pulse signalling. LAWSON, D. I., LORD, A. V., and PYE, Ltd. Oct. 12, 1945, No. 26789. Drawings to Specification. [Class 40 (v)] Relates to combined sound and television systems wherein the sound signals consist of modulated pulses occurring during the synchronizing pulses. The sound pulses are preferably duration-modulated and any variable edge of the modulated pulse always occurs with a minimum time separation from the synchronizing edge of the synchronizing pulse, which exceeds the time period of the pulse given by the time base oscillator of the receiver which is triggered by the synchronizing pulse. More than one pulse may be transmitted during each synchronizing pulse and they may be used for stereophonic sound transmission or colour switching for a colour television system. They may be of different amplitude so as to be separated by amplitude discrimination. The pulse modulation is effected as described in Specification 621,474. It is stated that when the transmitter is out of action for television transmission, the vision intervals may be used to transmit further interlaced pulse trains to provide eight or four high-fidelity sound channels. Specifications 434,890, 564,511, 602,033, 621,494, and U.S.A. Specification 2,227,108, also are referred to.
Patent GB-151282-A (GB)
Title: Improvements in railway and like fare systems and means used therewith
IPC: G07B11/09
Filed: 1920-09-20
Abstract: 151,282. Tanner, A. J. Sept. 19, 1919 [Convention date]. Ticket and token systems and apparatus for checking and registering.-In a zone or stage fare system for passenger vehicles, the separate zones are represented by checks or tokens having dis tinguishing colours or characteristics, a token issued to a passenger entering at one stage having an increased value assigned to it if retained and used for a stage or more beyond that which it represents. The tokens are issued and collected in a determined order, and an indicator is employed to display the successive values o the tokens. The tokens are issued by the at tendant from a distributing-box having a num ber of compartments corresponding to the num ber of zones, the compartments being successively brought into register with a delivery shoot fitted with a plunger for ejecting one token at a time At the end of the journey the tokens are dropped into a similar compartment in a receiving-box together with the fare, if desired. The distribut ing and collecting receptacles are provided with counters registering the number of passengers and also, if desired, with counters registering the number of journeys of the vehicle. The indica tor, set by the attendant, is placed in the interio of the vehicle. The tokens may be in the form of coloured disks 16, Figs. 1 and 2, contained in cylinders 9 mounted on a rotatable shaft 7 in the distributing-box 1. The cylinders are charged through an aperture 3 closed by a rotatable plate 4 provided with a lock 4<1>, and are adjusted to register successively with an ejecting plunger 18 by means of a hand-wheel 13 on the shaft 7. A counter 22 is associated with the plunger 18, and the rotatable base member 10 is provided with notches 14 engaged by a spring pawl 15 to retain the cylinders in their set position. The device may be secured to a rail 26 by a clamp 23. The collecting-box, Fig. 3, is provided with double the number of cylinders, to serve for both out and return journeys. The tokens and coins or tokens only are deposited in a glass hopper 33 having baffles 36 or other means for preventing illicit abstraction, and after scrutiny bv the attendant are allowed to fall into the proper compartment by operating a pivoted slide 51, the number of passengers being registered by a counter 54. The cylinders are successively brought into proper position by rotation of a wheel 43 fitted with a spring stop 44, and the number of complete rotations of this wheel may be registered by a counter. The contents of the cylinders may be removed through an opening 48, normally closed by a sealed plate 49, and placed in packets identified with the particular attendant of the vehicle. The device for indicating the zones and the fluctuating values assigned to the tokens comprises two polygonal drums 63, Fig. 5, set at each change of zone by pull-cords 68 and a ratchet device from either end of the vehicle. When more than three zones are used they may be represented by combinations of colours.
Patent GB-1518129-A (GB)
Title: Articulated piping system
IPC: F16L27/02
Filed: 1975-12-01
Abstract: 1518129 Pipe joints SNAMPROGRETTI SpA 1 Dec 1975 [3 Dec 1974] 26898/76 Divided out of 1518128 Heading F2G A universal joint of the "cardan" type between tubular elements, as 21, comprises first and second cardan half joints 11, 13 both pivotally connected to a central body 12, the pivot axis being orthogonal, and the central body being in the form of two hollow tubular members 14, 15 defining cylindrical chambers 16, 17 which at their ends are in communication with curved pipes, as 24, 25 leading to passages as 22, 23 in the cardan half joints. Seals 28 are provided to seal the pipes 24, 25 within the chambers 16, 17 and the cardan half joints turn on the tubular members 14, 15 through bearings 18. In an alternative embodiment the pipes 24, 25 associated with one cardan half joint are not provided and this half joint is not hollow, a pipe being connected directly to one end of one of the cylindrical chambers 16, 17. In a further alternative the pipes 24, 25 are dispersed with and connection is made through bores in the bearings.
Patent GB-943824-A (GB)
Title: Improvements in or relating to instruments for tracing circles
IPC: G01B3/10
Filed: 1962-07-13
Abstract: 943,824. Compasses. ETABLISSEMENTS QUENOT & CIE. July 13, 1962 [Jan. 29, 1962], No. 26946/62. Heading B6P. [Also in Division G1] An instrument for tracing circles of relatively great predetermined radius comprises a measuring tape 9 wound in a case 1 with a spike 6 and formed with an eyelet 11 in which a pencil may be inserted. The spike 6 may be retracted by rotating arm 3 about pivot 8 to the position shown in Fig. 4. The arm is held in either position by a spring urged member 4. The tape has a spring re-wind and may be locked in an extended position by a cam 14 rotated by a pin 15. The graduations on the tape can be seen, against a reference mark, through a window 2 in case 1.
Patent GB-694551-A (GB)
Title: Improvements in electric capacitors
Inventor: HUGGETT JOHN PHILIP
IPC: H01B3/48
Filed: 1951-11-19
Abstract: 694,551. Electric condensers. BRITISH DIELECTRIC RESEARCH, Ltd. Feb. 14, 1952 [Nov. 19, 1951; Feb. 15, 1951], Nos. 27112/51 and 2760/52. Divided out of No. 694,525. Class 37. [Also in Group VIII] An electric condenser, e.g. of the rolled type, has a cellulose spacer impregnated with a semiconducting liquid comprising cyclohexanone. The cyclohexanone may be mixed with a mineral oil chlorinated diphenyl, dibutyl phthalate, nitrobenzene, cellulose acetate or butyl acetate, the proportions being such that the A.C. resistivity of the mixture at 20‹ C. at a frequency of 50 c/s. and a voltage not greater than 15 v. is between 1 and 100 megohms-cms. Preferably the cellulose is pure regenerated cellulose.
Patent GB-177120-A (GB)
Title: Improvements in or relating to epicyclic reversing gearing
IPC: F16H3/66
Filed: 1920-12-08
Abstract: 177,120. Lancashire Dynamo & Motor Co., Ltd., and McLeod, R. S. Dec. 8, 1920. Reversing - gearing suitable for planing- machines comprises stepped planet gears P, Q, Fig. 1, carried by a driven shaft B and meshing with a pinion a<1> fast upon a driving-shaft A. Driving in one direction or the other is obtained by holding with a brake alternatively an internally-toothed ring D and a sun gear C. A modification is described in detail in which the ring D and gear C both mesh with the step Q. A modification with triple planets P, Q, R is shown in Fig. 3. In one Provisional Specification is described an arrangement with triple planet gears in which the planet carrier is one of the elements adapted to be held by a brake.
Patent GB-946189-A (GB)
Title: Improvements in or relating to hydraulic drill feed control
IPC: E21B44/06
Filed: 1962-07-16
Abstract: 946,189. Rock drills. ATLAS COPCO A.B. July 16, 1962 [July 20, 1961], No. 27178/62. Heading B4C. [Also in Division F2] A high-pressure fluid feed control for a drill rig mounted rock drill 31 having a fluid-driven rotary motor 33 for rotating the drill steel 34 and arranged to be fed by a fluid-driven motor 43 along guides 26 on the rig, comprises a high-pressure pump 45 having means 63, 65, 71 for varying its displacement, and connected to the feed motor, there being pressure fluid-actuated means 75 responsive to a selectively preset pressure and associated with the varying means for automatically reducing the displacement of the pump to a value according to the requirements of the drilling performed when the preset pressure is exceeded. The guides 26 for the rotary motor 33 are formed on a structure 25 pivotally mounted on a forked frame 18 itself pivoted on a base frame 10. The pump 45 for the feed motor 43 is mounted within a reservoir tank 47 mounted on the frame 10. A second pump 44 for driving the rotary motor 33 is mounted in a tank 47 on the frame, both pumps being rotated by means of an electric motor 46 or an internal combustion engine. The pumps are of the axial piston-type having a driving plate normal to and fixed to the driving shaft, the cylinder barrel and piston assembly being mounted in a housing 44<SP>1</SP>, 45<SP>1</SP> which is pivotally mounted in bearings 48, Fig. 6, in order that the inclination of the cylinder barrel may be varied and thus adjust the displacement of the piston. The means for automatically varying the displacement comprises a piston-and-cylinder device 63, 71, 55, the ends of the piston being acted upon via pipes 56, 73, by the output pressure from the pump. As shown in Figs. 6 and 7, a piston operated valve 75 communicates with the cylinder 72 for the piston 71 and is connected via a pipe 60, pre-set valves 58, 59 and non-return valve 57 with the inlet and outlet pipes from the feed and rotary drill motors 33, 43. In the event of the drill jamming the excess pressure in the latter pipes opens the valves 58 or 59 and acts on the piston valve 75 to thereby exhaust the pressure via a passage 78, from the cylinder 72 and so reduce the output from the pump. Reversing valves 53 are provided for the motors and interconnected slide valves 54 are provided for either connecting the output from the pump to the motors, or to drive motors 15 or to the reservoirs 47. The pumps may also be connected to rams 20 and 27 for adjusting the position of the structure 25 and the rams 14 for stabilizing the frame 10. Tracks 13 are also driven by means of hydraulic motors 15 via a gear 16.
Patent GB-493977-A (GB)
Title: Firing mechanism for multiple machine guns
IPC: F41A23/28
Filed: 1937-10-07
Abstract: 493,977. Machine guns. SOC. ANON. DES ANCIENS ETABLISSEMENTS HOTCHKISS & CIE. Oct. 7, 1937, No. 27222. Convention date, May 5. [Class 92 (ii)] A firing mechanism for multiple machine guns permitting of simultaneous or selective fire comprises a transverse rod 28 axially movable by a handle 29 to bring keys 40 into and out of engagement with key ways in the hubs of firing levers 38 bearing on the pivoted gun triggers 41, the rod 28 being rotatable as by a pedal to effect firing. The invention is shown applied to the triggers 41 of two guns, each trigger actuating a gun sear 26, Fig. 2. By moving the handle 29 above its pivot 30 to the position G, the lefthand gun fires when the rod 28 is rotated. In the intermediate position G, D, both guns fire, and, in the position D, the right-hand gun only fires. The parts may be arranged so that the guns fire alternately the handle 29 being set to position G for firing the left-hand gun, the runout movement of which is used to fire the righthand gun through a projection 47 on a rotary sleeve 46. The sleeve carries on an arm 43 a roller 45 which can be adjusted to a position beneath the right-hand trigger 41 when alternate firing is desired. The triggers may be locked by a safety detent 27.
Patent GB-1005028-A (GB)
Title: Novel 1:4-benzodioxan derivatives
Inventor: WASSON BURTON KENDAL
IPC: C07D319/16
Filed: 1962-07-16
Abstract: The invention comprises compounds of the formula <FORM:1005028/C2/1> (wherein R1 is hydrogen or alkyl; R2 and R3\t are hydrogen, alkyl, halogen or alkoxy; m is zero or an integer from 1 to 5; and Z is a 5- or 6-membered, saturated or unsaturated, nitrogen-containing heterocyclic group, which may carry one or more alkyl substituents, joined to the -(CH2)m-NH-(CH2)n-group through a carbon or nitrogen atom) and acid-addition salts thereof.  They may be prepared from the appropriate chloroalkyl-benzodioxan and an amine of the formula H2N(CH2)m-Z. Examples are given, and mono- and di-hydrochlorides of the products are described.  The benzodioxan compounds of the invention are stated to possess strong adrenolytic properties and they may be made up into pharmaceutical compositions with suitable carriers.
Patent GB-1367847-A (GB)
Title: Mobile earth-moving scraper
IPC: E02F3/64
Filed: 1972-06-13
Abstract: 1367847 Earth-moving, bowl type scrapers CLARK EQUIPMENT CO 13 June 1972 [30 July 1971] 27481/72 Heading ElF The drive sprockets) 38 of the scraper flights-carrying chain(s) 50 circulating about a drive and idler sprocket(s) carrying frame 33 of a scraper elevator for an earth-moving bowl type scraper is or are, in the loading position of the elevator, at the lower end of the frame. U.S.A. Specification 3,444,750 is referred to.
Patent GB-1203149-A (GB)
Title: Piperidine derivatives
Inventor: TODD ALEXANDER HENRY
IPC: C07D213/30
Filed: 1968-06-10
Abstract: 1,203,149. Piperidine derivatives. IMPERIAL CHEMICAL INDUSTRIES Ltd. 13 May, 1969 [10 June, 1968], No. 27502/68. Heading C2C. [Also in Division A5] Novel compounds of Formula I wherein R<SP>1</SP> is H, alkyl or aryl and X is a substituted or unsubstituted aryl radical and their acid addition salts are prepared by the reduction of the corresponding pyridine derivative or of an acid addition salt or quaternary N-benzyl salt of said pyridine derivative. Intermediates isolated are the starting materials for the above reaction which are prepared by the reaction of a compound X-O-Na with a corresponding halo-methyl-pyridine derivative (which is prepared by reaction of the corresponding hydroxymethyl derivative with thionyl chloride). The said hydroxymethyl derivatives are prepared by reduction of the appropriate keto derivatives.
Patent GB-390078-A (GB)
Title: Improvements in and relating to windows
IPC: E06B3/40
Filed: 1932-10-04
Abstract: 390,078. Reversibly pivoted sashes; draught-excluders. COOK, A. E., 23, Morlev Street, Redfield, Bristol. Oct. 4. 1932, No. 27510. [Class 20 (iii).] A window sash of the kind which is reversibly pivoted on central vertical pivots 3, 4 is provided with a hingedflap draught-excluder 21 at the upper outer edge, which is closed by a roller 27 on a bracket secured to the sash near one end thereof when the sash is closed, and with an inner sliding draught-excluder 10 slidably held by springs 14 on stops 13 and raised by hand. The pivots are housed in detachable angle-plates 8, the top pivot having a spring washer and adjusting nut 18. A ball race may be provided on the pivot.
Patent GB-1527797-A (GB)
Title: Colour television systems
IPC: H04N9/68
Filed: 1976-07-01
Abstract: 1527797 Television; differential gain correction INDESIT INDUSTRIA ELETTRODOMESTICI KALIANA SpA 1 July 1976 [1 July 1975] 27511/76 Heading H4F In a colour television system, differential gain distortion of amplitude modulated signals (e.g. luminance and chrominance in PAL or NTSC systems) is corrected by inserting in the video signal a constant amplitude correction signal at a mean level different from the colour burst and, at the receiver, using the amplitude of the correction signal, in comparison with that of the burst, to provide a control signal for a variable, non-linear, video amplifier. As described a signal at colour subcarrier frequency, corresponding to the colour yellow (with 75% saturation) of the "colour bar" test signal is added to the video signal in one line per field (Fig. 1, not shown). At the receiver, Fig. 2, after passing through a variable non-linear amplifier 12 the chroma signal is filtered out from the video signal and amplified at 14 under control of AGC circuit 15, 17, 20. The amplitude of the bursts separated by gate 15 is detected at 17 and supplied to one input of differential amplifier 21, the other input of which receives a signal representative of the amplitude of the correction signal which is separated at 19 and demodulated at 18. The output of the differential amplifier, representative of the difference in gain between the burst and correction signals, controls the non-linear amplifier 12 which restores the amplitude of the video signals to their correct value. Alternatively, the burst and correction signals may be filtered out after the B-Y demodulator (not shown), and the correction signals could be inserted in line flyback intervals alternately with the bursts. In this latter case the correction signal may be displaced in frequency from the bursts to ease separation. Furthermore, since the burst amplitude is constant due to the AGC circuit, it is possible to use the amplitude of the correction signal directly to control the non-linear amplifier. As a further alternative, the same burst could be inserted in each flyback interval but alternately at black and the level of the yellow of the "colour bar", and in this case the amplifier control signal is obtained by envelope detection of the burst and filtering of the component at half line frequency.