baber/WOPTO huggingface dataset:
Patent GB-146708-A (GB)
Title: Vacuum tube rectifiers or generators of alternating current especially for use in wireless telegraphy
IPC: H01J21/20
Filed: 1919-06-20
Abstract: 146,708. Taggart, J. Scott-. June 20, 1919. Vacuum tubes. - A thermionic valve has a single-filament cathode passing through the axes of two cylindrical anodes of equal diameter, which are given potentials of opposite sign at any instant with respect to the filament, the potentials being reversed at each half alternation or oscillation so that the valve acts as a full-wave rectifier. A single grid may be arranged around the filament in a valve for use as a rectifier in wireless systems, and as a generator of continuous oscillations. In the arrangement shown in Fig. 2, a straight or U- shaped filament 1 is mounted inside two. anodes 6, 7 supported on stems 10, 12 in a bulb. The end 17 of the stem 12 may be enlarged to avoid leakage and prevent deposit of metal. In the rectifying arrangement shown in Fig. 3, the anodes 13, 15 are connected with the secondary windings 6, 7, of a transformer, the primary 16 of which is connected with a supply 1 of alternating current. The secondaries are together connected through a condenser 10 of large capacity with the filament 3, which may be heated by continuous current, or may be connected in series with the secondary 2 of a transformer and with a resistance 4. The load 11 is connected across the condenser 10. In the wireless signalling system shown in Fig. 5, the two anodes 12, 13 of a valve for generating continuous oscillations are connected through inductances 10, 11 with the ends of secondary windings 7, 8 of a transformer, the primary 5 of which is connected through a signalling key 6 with a source of alternating current 1. The common point 9 of the secondaries is connected through an inductance 14 with an aerial tuning inductance 15. The inductances 10, 11, 14 and condensers 21, 22 serve to exclude high frequency oscillation from the transformer. A single grid 16 is connected with a tuned or aperiodic circuit 17 which may be coupled with the inductance 15. A resistance 18 and a condenser 19 in parallel may be included in the grid circuit. The filament 3 is connected with the secondary of a transformer 2.
Patent GB-379343-A (GB)
Title: Improvements in or relating to artificial flies
IPC: A01K85/08
Filed: 1931-05-27
Abstract: 379,343. Artificial flies. BRUSH, W. A., 1913, Palmer Park Boulevard, Detroit, Michigan, U.S.A. May 27, 1931, No. 15534. [Class 48.] The hackle of an artificial fly is off-set from the shank of the hook either by attachment to a bentup part 15, Fig. 3, of a quill 14 bound to the hook or by securing it to a projection on the hook. The projection is formed integral with the hook by bending over the end 35, Fig. 9, or by bending the shank 28, Fig. 8. Alternatively a separate piece may be attached to the hook.
Patent GB-769190-A (GB)
Title: Improvements in holder with means for ejecting contents
IPC: A45D40/02
Filed: 1955-05-31
Abstract: 769,190. Lipstick and like holders. DULBERG, M. May 31, 1955, No. 15638/55. Class 18. - A lipstick or like holder which may be of the screw feed pattern or as shown, has a platform 7 in the cup which may be raised by an instrument operating through apertures 10, 11 to eject the stick from the cup. The platform 7 may be a simple disc.
Patent GB-1184336-A (GB)
Title: Improvements in or relating to Time-Continuous Photography
Inventor: KUMAGAI TAKASHI
IPC: G03B15/08
Filed: 1967-04-05
Abstract: 1,184,336. Cinematography. TAKASHI KUMAGAI. April 5, 1967 [Aug.27, 1966], No. 15658/67. Headings G2A; G2E and G2M. In a system of time-continuous photography and reproduction which may be applied to cinematography and high-speed photography, a photograph is made on a photographic plate in which the picture is divided into an array of minute points such that each will trace a non-intersecting line when the plate is moved. A suitable camera comprises a lens 1 and diaphragm 2 which form an image on a plate 4 perforated by minute holes 5 whereby an array of picture elements is produced on the photo-sensitive plate 6. The plateholder 7 is traversed at a constant velocity V during exposure by means of motor 8 and gears 9 driving feed screw 10. The line-images on plate 6 are subjected to reversal development and are projected as a motion-picture by the system of Fig. 5 (not shown), in which a perforated screen (4) is placed in front of the illumined plate (6) continuously driven at velocity (V). A complete picture is projected by lens (11) on to screen (14) which may be off-set to give a soft-focus effect. Very low-speed motionpicture projection without flicker is possible. In a modification of the camera, the perforated screen is placed in front of the objective lens, and the image size may be varied by changing the separation of the perforated plate and the lens, and of the lens and the photo-sensitive plate. The plate-holder is driven through a rack and pinion whereby the velocity V may be increased to highvalues for high-speed motion picture photography, say at 100, 000 frames/second. Since each picture element may be 1/125 mm. in diameter a plate shift of 1/125mm. corresponds to one frame in conventional cinematography. The photo-sensitive plate may be a rotatable disc or cylinder and speeds of 10, 000, 000 frames/ second are possible. Again a perforated plate may be replaced by a transparent lenticular plate.
Patent GB-1115796-A (GB)
Title: Improvements in and relating to ground anchors and methods of making such anchors
IPC: E02D5/76
Filed: 1965-04-13
Abstract: 1,115,796. Piles; ground anchors; boring earth &c. K. H. BAUER. 13 April, 1965 [4 April, 1965], No. 15663/65. Headings E1B, E1F and E1H. A method of making a screw tension-pile, or ground anchor, in situ includes the steps of driving a helical cutter. Fig. 1, into the ground by rotating a hollow driving-shaft or pipe 5 connected to the cutter while injecting a hardenable material, e.g. concrete containing a synthetic resin, into the helical cavity formed by the cutter, Fig. 2 (not shown), passing a tie-rod 6, Fig. 4, through said pipe, engaging the end of the tie-rod with screw-threads 1 on the cutter, withdrawing the pipe 5 and filling the space left thereby with the said material. The method may include the further steps of retracting the cutter by applying a tensile load to the tie-rod before the pipe 5 is withdrawn so as to compress the adjacent ground and form a substantially cylindrical cavity (7), Fig. 3 (not shown), which is situated at the lowermost end of the helical cavity, returning the cutter to its former position and filling the cavity (7) with said material. Filling of the said cavities is effected through the pipe 5 and bores 2, 3 in the cutter. The tie-rod 6 may be provided with a coating of a synthetic plastics material to minimize corrosion and to reduce friction relative to the said material.
Patent GB-128812-A (GB)
Title: Device for Starting Internal Combustion Engines.
Inventor: MOGUE CHARLES LOUIS FRANCIS
IPC: F02N13/00
Filed: 1918-09-26
Abstract: 128,812. Mogue, C. L. F. Sept. 26, 1918. Addition to 128,774. Starting.-In a starting-device in which a cartridge 8 of gunpowder or the like is exploded by means of a firing-rod released by a cam-actuated trigger, as described in the parent Specification, the part 2 which is removable to admit the cartridge is screwed into the part 1 fixed on the cylinder, and has a rim 10 engaging a groove 9 in the base of the cartridge. A pointer driven by a halfspeed shaft indicates which cylinder is in position for receiving a starting impulse.
Patent GB-168684-A (GB)
Title: A new or improved process and apparatus for casting gold and other metals in wax prepared moulds
IPC: A61C13/20
Filed: 1920-06-10
Abstract: 168,684. Cereceda, S. June 10, 1920. Casting-machines.-In making dental and other gold castings by the wax pattern process, the mould is exhausted by flexibly connecting the flask at g to a container a that may be spherical, in which a vacuum has been produced by first evaporating water, alcohol, sulphur ether, &c., and then sealing the vessel and condensing. A screw-plug f closes the filling orifice for the liquid or solid to be evaporated, a cork b controls the connection with the flexible tube, and a pressure gauge and safety valve are fitted. Moulding processes; flasks.-To form the mould a star-shaped piece of wax n is placed in the flask i, which may be of special form to suit the casting. A metal grid o that fits the flask is then placed above the wax and above this the wax pattern, previously coated with a paste, composed of plaster of paris or clay mixed with water, and dried, is embedded in the investment. a vent wire s projecting into the usual crucible-like cavity u. The wire is removed after the mould has set and the mould is heated to drive off the wax and is maintained heated during the casting.
Patent GB-923914-A (GB)
Title: Improvements in gauge glasses and sight tubes
IPC: G01F23/02
Filed: 1961-05-01
Abstract: 923,914. Gauge glasses. FARBENFABRIKEN BAYER A.G. May 1, 1961 [May 4, 1960], No. 15727/61. Class 123 (1). [Also in Group XXIX] A gauge glass for the observation of liquid level in systems under high pressure comprises a glass tube 3 fitting tightly within a metal protector sleeve 1 having observation apertures 2, the ends of the tube being sealed within the sleeve by screwed nipples 5 and packing 4. The assembly is enclosed in an outer glass sleeve 6 which serves to confine glass splinters and liquid if the tube 3 should burst and to divert the escaping liquid through downwardlydirected ports.
Patent GB-130507-A (GB)
Title: Improvements in Diaphragms for Gramophones, Phonographs, Telephones, and the like.
Inventor: COLLIER ARTHUR THOMAS
IPC: H04R7/18
Filed: 1918-09-28
Abstract: 130,507. Collier, A. T. Sept. 28, 1918. Telephones; microphones. - A diaphragm for phonographs, telephones, &c. comprises an apertured part a, Fig. 2, of parchment, vellum, or celluloid, and a central part b of mica, glass, ivory, &c. In the case of receivers one part is of ferrotype iron, and for transmitters one part is of carbon. The inner edge of the part a is slit to provide tongues c which are alternately connected to opposite sides of the part b, or the two parts a, b may overlap, a ring of paper &c. being applied to the joint. The outer edge of the part a is cup-shaped so as to fit around the sound-box frame d to which it is secured by a split clamping- ring e provided with lugs f and a tightening-screw. The diaphragm may be tensioned by an adjustable stretching ring k. In a modification, the edges of the cupped diaphragm a<1>, Fig. 4, may be cemented to a ring n which may be forced away from the frame d by screws j, and in a further modification the ring n may be arranged outside an extension of the frame d. One of the Provisional Specifications states that the stretching ring may be of lead or form part of a weight, so as to impart inertia to the sound-box.
Patent GB-379371-A (GB)
Title: Improvements in fishing reels
IPC: A01K89/01
Filed: 1931-05-29
Abstract: 379,371. Fishing-reels. HOGARTH, J. B., 41, Thorne Road, Doncaster. May 29, 1931, No. 15812. [Class 48.] A fishing-reel comprises a drum 2 with its axis parallel to the rod and driven by gear wheels 9, 11, and a flyer 7 driven in the reverse direction by gear wheels 9, 8. The line pickup 14 is oscillated by an eccentric 13. When casting, the line is unhooked from the pick-up and unwinds without rotating the spool. The line is then replaced on the pick-up and on being pulled by a fish the drum rotates to unwind the line further. The spool is braked by a ratchet wheel 5 and pawl 6 and can be further restrained by a wing-nut 18 which bears on the spool through the medium of a leather washer 20.
Patent GB-419888-A (GB)
Title: Improvements in and relating to thermionic valves
IPC: H01J21/20
Filed: 1933-06-01
Abstract: 419,888. Thermionic valves. FERRANTI, Ltd., and SUTTON, R. W., Hollinwood, Lancashire. June 1, 1933, No. 15841. [Class 39 (i).] In a valve having at least three main electrodes anc at least one diode anode co-operating with the main cathode, the control grid extends over substantially the full length of the cathode whilst the diode anode or anodes are disposed between the cathode and the control grid and are screened from the main anode by the control grid supports. In one form, Fig. 2, diode anodes a, b consist of rods running the full length of the cathode d and disposed between it and the control grid c, whilst the grid supports f, g are of larger diameter than the anodes a and b and screen them from the anode e. All the electrodes are spaced at the top and bottom by mica sheets. In a modification, an additional grid, preferably connected to a source of positive potential is inserted between the diode anodes and the control grid. In this case the supports for the additional grid may be of larger diameter than those of the control grid and than the diode anodes.
Patent GB-852623-A (GB)
Title: Improvements in and relating to ships-berths and wall beds
IPC: B63B/
Filed: 1959-05-08
Abstract: 852,623. Bedsteads. FABRIEK VAN PLAATWERKEN VOORHEEN FA. WED. H. VAN DAM N.V. May 8, 1959 [May 14, 1958] No. 15859/59. Class 52(2) A ship's berth I or the like pivoted about a horizontal axis 2 so that it can be swung up to vertical position is urged to the vertical position by springs 15, 16 and a further spring 17 passes through a dead centre position so that it assists springs 15, 16 as the berth is near the vertical position and opposes them as it is near the horizontal position. The berth has abutments 8 co-operating with adjustable stops 10 to define the horizontal position.
Patent GB-568813-A (GB)
Title: Improvements in or relating to tools driven by compressed air
IPC: B23B47/08
Filed: 1943-09-28
Abstract: 568,813. Portable grinding-machines. PATON, W. H., and AERO PIPE & GLASS CO., Ltd. Sept. 28, 1943, No. 15911. [Class 60] [Also in Groups XXII and XXVI] Portable compressed air driven rotary tools have a rotor F provided with a helical rib and rotating in ball bearings in a casing provided with a helical groove of opposite hand to that of the rotor. Multi- ,start helices may be employed. A screw cap B on the upper end of the casing mounts one ball bearing and also a valve G that normally closes the inlet port b<1> being held by a spring g<1> against a shoulder b<3>. A lever H provides for manual control. The lower screw cap C mounts the other ball bearing and has a ring of holes C<2> serving as exhaust ports, the exit ends of the ports deflect the exhaust towards the cutting tool to blow away cuttings. The cutter may be a drill, rotary file, grinding-wheel, &c.
Patent GB-439054-A (GB)
Title: Improvements in or relating to the manufacture of organic cyanogen compounds
Filed: 1934-05-28
Abstract: Organic cyanhydrins are obtained by reacting hydrocyanic acid with an aldehyde or ketone in which an alkyl or aralkyl group is attached to the --CO or CHO group, in presence of inorganic alkaline reacting substances as catalyst, in a liquid medium comprising a substantial proportion of the cyanhydrin itself with or without other inert solvents.  According to the example, lactonitrile is used as solvent for the reaction between HCN and acetaldehyde with sodium cyanide as catalyst, giving a high yield p  of lactonitrile.  A small quantity of water may be present in the reaction.  Further specified aldehydes and ketones are acetone, phenylacetaldehyde, benzylmethylketone, and acetophenone; specified alkaline catalysts are oxides and hydroxides of the alkali and alkaline earth materials, alkali cyanides, carbonates and salts such as Na2HPO4 and ammonia.
Patent GB-746999-A (GB)
Title: Process for purifying glass
IPC: C03B5/225
Filed: 1954-05-31
Abstract: 746.999. Purifying glass. ZEISS-STIFTUNG. C.. [trading as JENAER GLASWERK SCHOTT & GEN.]. May 31, 1954 [Jan. 11, 1953], No. 15999/54. Class 56 A process of purifying glass is characterized in that the melt is refined in a platinum crucible which is at least partially heated by eddy currents, and when the melt has reached a given temperature a vacuum of 0.7 to 0.95 atmos. is generated above the melt.
Patent GB-497016-A (GB)
Title: New anthraquinone dyestuffs
IPC: C09B1/30
Filed: 1937-06-09
Abstract: 1.4- And 1.5-bis-(a b -diphenylethylamino)-anthraquinone sulphonic acids are made by reacting a b -diphenylethylamine with anthraquinone derivatives containing replaceable substituents in 1 and 4 or 1 and 5 positions, and which may contain other substituents, followed by sulphonation.  The replaceable substituents may be amino or hydroxy, in which case the compounds may be used wholly or partly as their leuco derivatives or in presence of a reducing agent, the products being oxidized, or they may be halogen atoms, nitro or sulpho groups. Further halogen atoms, or methyl, amino or hydroxy substituents may also be present.  In examples: (1) leuco-1.4-diaminoanthraquinone or a mixture of quinizarin and leuroquinizarin is reacted with a b -diphenylethylamine in butyl alcohol, followed by sulphonation, to give a 1.4-bis-(a BETA-diphenylethylamino)-anthraquinone sulphonic acid which dyes wool reddish-blue shades; (2) 1.5-dichloranthraquinone is reacted with a b -diphenylethylamine in presence of copper and potassium acetates, followed by sulphonation in presence of urea to give a 1.5 - bis - (a b  - diphenylethylamino) - anthraquinone sulphonic acid which dyes wool bluish-red shades; (3) 1.8-diamino-4.5-dihydroxy-anthraquinone is reacted with a b -diphenylethylamine in presence of sodium hydrosulphite and ethyl alcohol to give 1 - amino-5.8-bis-(a b -diphenylethylamino)-4-hydroxyanthraquinone which gives on sulphonation a product which dyes wool greenish-blue shades.
Patent GB-687018-A (GB)
Title: A wrong gas detector for use with an anaesthetic apparatus
IPC: A61M16/10
Filed: 1950-06-28
Abstract: 687,018. Anaesthetic apparatus. EDMONDSON, W., and JONES, W. June 27, 1951 [June 28, 1950], No. 16083/50. Class 81 (ii). A wrong gas detector, for use with anµsthetic apparatus wherein separate couplings are provided for nitrous oxide and carbon dioxide cylinders, is provided with means for differentiating qualitatively between nitrous oxide and carbon dioxide by utilising the different acidity of their solutions in water. Gas passing through a nipple H permanently connected in the nitrous oxide line passes through a filter G and a restriction F into a container A and thence to a tube D sealed to the container A. The gas then passes through the tube D into a transparent container J which holds water containing an indicator such as bromothymol blue. If the gas passing is nitrous oxide the bromothymol blue remains blue but if carbon dioxide is inadvertently connected with the nitrous oxide line the bromothymol blue turns yellow.
Patent GB-515368-A (GB)
Title: Driving arrangement for film spools in cinematograph machines
IPC: G03B21/43
Filed: 1938-05-30
Abstract: 515,368. Kinematograph apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., and DAVIES, B. R. May 30, 1938, No. 16099. [Class 97 (i)] In spool-driving means wherein the spool spindle 5 is carried by a link 6 mounted on a pivot 7 and supported by a driving belt 2 passing round a pulley 4, increase in the weight of the film on the spool thus increasing the tension of the belt, a friction clutch between the pulley 4 and spindle 5 is controlled by a cam member rotated by a link 14 pivoted to a link 15 carried by a fixed pivot 16. The clutch comprises a disc 7, Fig. 2, having a friction surface 8 pressed against the pulley 4 by a spring 11, and the cam surface 10 of a member 9, also engaging the pulley 4, engages a pin 13 on a member 12, so that rotation of the member 9 by the link 14 varies the clutch pressure. U.S.A. Specification 2,099,299 is referred to.
Patent GB-347920-A (GB)
Title: Improvements in battery charging
IPC: H02J7/00
Filed: 1930-05-26
Abstract: 347,920. Battery charging and discharging systems. SIEMENS-SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. May 26, 1930, No. 16182. Convention date, May 30, 1929. [Class 38 (iv).] A device for automatically charging a battery when used in systems such as signalling or control circuits comprises a battery 1 as shown in the Figure, connected to an output circuit 3 through a switch 9. A source of constant voltage such as a battery 2 is connected in opposition to battery 1 through a switch 6 and a relay 4 sensitive to the voltage difference between batteries 1, 2 or to the compensation current due to the voltage difference. Energization of relay 4 closes contacts 10 to complete a circuit to operate switch 7 and auxiliary switch 6 so that battery 2 is connected to output circuit 3 and battery 1 is charged from a D.C. source 8. Known means moves switch 7 to its mid position and closes switch 6 when battery 1 is fully charged. The battery or load may be periodically shunted by a loading resistance to ensure operation of relay 4 on light load.
Patent GB-570466-A (GB)
Title: Improvements in and relating to noise limiting circuits for signal-modulated carrierwaves
IPC: H03G11/04
Filed: 1943-10-04
Abstract: 570,466. Wireless receiving circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 4, 1943, No. 16217. Convention date, Oct. 5, 1942. [Class 40 (v)] In a receiver for signal-modulated waves, a noise-limiting circuit for suppressing signals of greater amplitude than the modulation envelope is controlled by a voltage dependent on the inward peaks of the modulation envelope. As shown in Fig. 1, the I.F. output transformer 11 of a superheterodyne receiver has a secondary winding 13 feeding a signal diode 10 having a load resistance 17 and bypass condenser 18, the audio frequency signal being taken through condenser 19. Connected in parallel with diode 10 is a diode 20 and condenser 21 across which is maintained the threshold bias voltage for the diode 20. The lower plate of condenser 21 is connected to an adjustable tap 56 on a potentiometer resistance 24 connected across a source 28. The upper plate of condenser 21 is connected to the anode end of a load resistance 23 of a triode 27. With this arrangement and with triode 27 drawing current, diode 20 is biassed beyond cut-off and so signals of smaller amplitude than this threshold potential are rectified in diode 10 to produce a signal voltage across resistance 17. Noise impulses of greater magnitude than the threshold bias cause diode 20 to conduct, thus, with both diodes conducting there is no net rectification, and the output is suppressed during the noise impulses. The magnitude of the, threshold bias is made to be always a little greater than the peaks of the modulated signal by applying to the grid 51 of valve 27 voltages which vary with the average magnitude of the carrier and with the modulation peaks.. As the noise impulses are stated to consist of outward modulation peaks only, the voltage dependent on modulation is derived from the inward modulation peaks. These control voltages are derived from a secondary winding 14 feeding a diode 30 having load resistors 31, 32. A variable tap 39 on a voltage divider 37, 38 across load 31, in conjunction with an audio-frequency by-pass condenser 40, provides a voltage which varies with the carrier strength, and is fed through resistance 46 to the grid of valve 27. The voltage at point 43 is always positive. and varies with the modulation envelope. This is fed through a condenser 44 to eliminate the direct current and by peak rectification in diode 45 produces a negative potential varying with the negative modulation amplitudes. Condenser 47 is arranged to by-pass audio frequency voltages, but allows voltages varying at syllabic frequency to appear across resistance 46 for feeding to grid 51. These two voltages in series vary the conductivity of valve 27 and, by varying the current through load 23, vary the threshold bias across diode 20 in accordance with the modulation envelope so as to eliminate only the noise impulse peaks.