baber/WOPTO huggingface dataset:
Patent GB-1503303-A (GB)
Title: Interference suppression circuits for pulse radar systems
IPC: G01S7/292
Filed: 1970-05-12
Abstract: 1503303 Radar SIEMENS AG 12 May 1970 [9 July 1969] 23024/70 Heading H4D A pulse Doppler radar system having interference suppression circuits for removing an interference pulse US of duration TS, Fig. 3, coinciding with the envelope of the target echo signal UZ of duration TZ comprises, Fig. 4, a transmitter 1, transmit/receive switch 2, antenna 3, mixer 4 and oscillator 5, the received target echo signals being fed through a distributer line 6 to n range channels successively connected by switches 7a-7n. Each channel includes a Doppler filter 8, demodulator 9, interference suppression circuit 10, integrating stage 11 and sampling switch 12. The switches 12a-12n are sequentially operated to supply output signals through a threshold detector 17 to a PPI display system 13 showing azimuthal angle and range, each channel being sampled several times during each target transit time. Each interference suppression circuit 10 comprises, Fig. 5, a threshold setting circuit 14 feeding a differentiating stage 15 controlling a switch 16. The switch 16 blocks the supply of echo signals to the stage 11 for a time which is short compared with TZ whenever the interference signal has an amplitude above the limit 14' set by circuit 14. The switch 16 is not operated by a target echo signal since the leading end of this pulse rises slowly in comparison with the steep rise of the interference pulse. The smallest target echo signal that may be detected has a level 17<SP>1</SP>, this signal when integrated at stage 11 causing response of detector 17. However, an interference pulse between levels 17<SP>1</SP>, 14<SP>1</SP> is ineffective to operate threshold detector 17 since its duration is too short to give an adequate output from stage 11. The brief interruption of the integrating process for a period TS<SP>1</SP> while the switch 16 is operated by that portion of interference signal US which exceeds level 14<SP>1</SP>, is hardly apparent to the operator. In another embodiment, Fig. 6, the distributer line 6 is connected to each range channel via a Doppler filter (not shown) and an isolating transformer 24. A branch 27 from the line to the modulator 9a is connected to an additional, similar, modulator 9a<SP>1</SP>. The output from modulator 9a<SP>1</SP> is connected via a threshold setting stage 30 to a differentiating stage 31 connected to a timer stage 37, the latter determining the time during which the integrating device 11a is short-circuited by an interference pulse, this time being dependent upon the level of the interference signal. This short-circuiting action is caused by producing at the junction 42 a certain potential which makes the transistor 43 conduct.
Patent GB-731647-A (GB)
Title: Improvements in stoves
IPC: F24B13/00
Filed: 1953-08-21
Abstract: 731,647. Solid-fuel stoves. BAXENDALE, R., BAXENDALE, J., BAXENDALE, P. S., and BAXENDALE, M. J. June 10, 1954 [Aug. 21, 1953], No. 23087/53. Class 126. A solid-fuel stove a has a flue pipe e inclined forwardly from the top of the stove at such an angle that a door f which closes its outer end is at a convenient height to serve as a fuel-feeding door, the combustion gases passing to atmosphere through a vertical pipe g leading upwardly from the inclined flue. The stove may be so set in the outside wall h of a structure such as a greenhouse that the fuel-feeding door f, a poking door c and an ash-removing door d are all accessible from outside.
Patent GB-517788-A (GB)
Title: Improvements in independent simultaneous telegraphy and telephony systems
IPC: H04M11/06
Filed: 1938-08-04
Abstract: 517,788. Exchange systems. TRANSMISSIONS' LOTH-HAVAS. Aug- 4, 1938, Nos..23106 and 23107. Convention dates, Aug. 6,'1937 and July 18, 1938. [Class 40 (iv] In a combined telephone and telegraph system, filters are provided at the exchange in addition to the filters at the sub-stations so that a subscriber may be simultaneously in telephone and telegraphic communication with other subscribers. In the manual exchange system shown in Fig. 5, filters 2, 4 are provided at the sub-stations and 29, 30 at the exchange, telephone and telegraph connections being connected over separate cord circuits 32, 33. Fig. 4 shows another system in which a telegraphic message from telegraph exchange 23 is transmitted over line 24 to a telephone exchange and thence to a number of telephone substations such as 3, 6, filters 27, 28 being provided at the telephone exchange, the telephone exchange equipment being indicated at 26. The frequencies used for telegraphy may be above, below, or unimportant frequencies within, the speech range, and different frequencies may be used for marking and spacing. Multiplier telegraphy may be employed. The Specification also describes a thermionic'valve generator and receiver for telegraphic frequencies and means for switching, on and off, a telegraphic receiver from the transmitter.
Patent GB-964531-A (GB)
Title: A method of balancing timepiece balances
Inventor: SCHWEIZER WALTER
IPC: G04D7/08
Filed: 1961-06-27
Abstract: 964,531. Testing balancers. KIENZLE UHRENFABRIKEN A.G. June 27, 1961,No. 23136/61. Drawings to Specification. Heading G3T. In a method of balancing a timepiece balance wheel, the balance wheel is mounted for rotation about a horizontal axis and a first testing unbalance weight correction is applied to the wheel in a first equilibrium position thereof at an angle O < α < 45 degrees to the horizontal, a second testing unbalance weight correction is applied to the wheel in a second equilibrium position thereof at an angle # to the vertical, # < 90 degrees, and, finally, the residual unbalance is eliminated by a third unbalance weight correction applied to said wheel in a third equilibrium position thereof in a vertical plane containing said axis,and both being measured on the same side of the vertical plane, and lying above a horizontal plane through said axis for a weight correction applied by added weight and below said horizontal plane for a weight correction applied by weight removal.
Patent GB-315124-A (GB)
Title: Improvements relating to drag devices employed in spinning, twisting and similar machines
IPC: D01H7/44
Filed: 1928-08-11
Abstract: 315,124. Mackie & Sons, Ltd., J., and Mackie, J. P. Aug. 11, 1928. Spindle apparatus.-In drag arrangements for spinning and other flyer frames of the kind wherein drag is provided between the upper surface of the bobbin rail and the under surface of a base plate fitting over a dead spindle and carrying the bobbin tube, the bobbin being driven by the base plate, an interchangeable metal plate f is interposed between the bobbin rail and the base plate b and carries a ring of friction material g of predetermined effective diameter or is provided with a surface o, Fig. 3, adapted to engage a ring of friction material p secured to the base plate. The plate f is held stationary in the bobbin rail by pins h, and is readily removable so that it may be replaced by a similar plate having a ring of friction material of different diameter when spinning yarn of a different count. In the arrangement shown in Fig. 2 the plate f has a relatively thick friction ring g of small diameter, and the base plate has a friction ring n of greater diameter and less thickness, so that, when spinming coarse yarns, the plate f may be removed, the ring n then becoming effective. The base plate may be weighted to increase the range of the drag by means of washers or like discs interposed between it and the lower end of the bobbin. The base plate may be formed with ribs or fins to facilitate the dissipation of the heat generated in action.
Patent GB-169362-A (GB)
Title: Improvements in and relating to anchoring means
IPC: E02D5/80
Filed: 1920-08-10
Abstract: 169,362. Dray, H. T. R. Aug. 10, 1920. Ground anchors.-An anchoring-means for guyropes &c. comprises a pile screw 1 to which is secured one end of a wire rope, chain, or rod provided at its other end with means 3 for securing the stay. The screw is forced into the ground by means of a removable tube adapted at its lower end to engage notches or projections 14 on the screw. The eye 3 may be replaced by the device shown in Fig. 2, comprising a cleatlike member 6, bearing rings 7, and secured to the screwed end of the rod 2 by a nut 11 and a ring-nut 8, a plate 9 and washer 10 being interposed between the part 6 and the nut 11. In a modified form of attachment, the ring seat is screwed into a sleeve carried by the screwed end of the rod 2.
Patent GB-166829-A (GB)
Title: Improvements in or relating to cotton bats or pads for use in upholstery and for other purposes
IPC: A47C27/12
Filed: 1920-08-10
Abstract: 166,829. Jackson, W. J. Mellersh-, (Tanners Products Co.). Aug. 10, 1920. Wadding.-Bats for use in cushions, mattresses, &c., which are subjected to a compressing action in use, comprise a plurality of superposed layers of a mixture of cotton and animal hair, the animal hair being of a stiffer and more springy character than the cotton to maintain the bat in a loose condition. Preferbly the cotton and animal hair are in substantially equal proportions.
Patent GB-1017485-A (GB)
Title: Improvements in or relating to a process for the manufacture of polyamide resins
IPC: C08L63/00
Filed: 1964-06-08
Abstract: A process for the manufacture of polyamide suitable for hardening of polyepoxides comprises reacting polyalkylene polyamines with unsaturated carboxylic acids (or their amide-forming derivatives) obtained by the cationic addition of 0.5 to 20 molar quantities of indene and/or coumarone to conjugated unsaturated fatty acids having 12 to 22 carbon atoms. The fatty acids may be used in the form of their mixed esters and the indene and/or coumarone may be used in the form of coal tar oils.  Specified polyamines are diethylene triamine, triethylene tetramine, tetraethylenepentamine and hexamethylene diamine. Examples of the preparation of polyamides are given. Example 7 describes the use of these polyamides for curing (a) an epoxy resin derived from bis-phenol-A and epichlorohydrin and (b) a mixture of (a) with butyl glycidyl ether.
Patent GB-1028566-A (GB)
Title: Water-insoluble monoazo-dyestuffs and process for preparing them
IPC: C09B29/08
Filed: 1963-06-13
Abstract: The invention comprises water-insoluble monoazo-dyes of the general formula <FORM:1028566/C4-C5/1> in which X represents a hydrogen, chlorine or bromine atom, Y represents a hydrogen atom or an acetyl group and Z represents an acetyl group.  The dyes are particularly suitable for colouring textile fibres of polyethylene terephthalate or cellulose acetate.  The dyes are prepared by diazotizing an appropriate dinitraniline and coupling with an appropriate coupling component.  Examples are furnished,
Patent GB-806810-A (GB)
Title: Improvements in or relating to a turbine wheel for a gas turbine engine
IPC: F01D5/02
Filed: 1955-08-17
Abstract: 806,810. Turbine rotors. CHRYSLER CORPORATION. Aug. 17, 1955 [Sept. 15, 1954], No. 23687/55. Class 110 (3). A turbine wheel for a gas turbine engine comprises a central hub 79 which is adapted to be mounted on a turbine shaft 82, and a disc coaxial with the hub and extending radially outwards therefrom, the disc having an inner portion 80 integral with the hub 79 and an outer portion 84 carried by the inner portion to comprise a unitary structure therewith. The axial thickness of the disc decreases radially from adjacent the hub to a region of minimum thickness adjacent the outer periphery of the disc. The disc has at its periphery an enlarged ring portion integral with the outer portion of the disc and a plurality of blades 88 carried by the ring. The junction 85 between the inner and outer portions is disposed radially inwardly of the region of minimum axial thickness. In a second embodiment, Fig. 2, the junction 85<SP>1</SP> between the inner and outer portions 80<SP>11</SP> and 80<SP>1</SP> of the disc is nearer the hub portion 79<SP>1</SP> than in the first embodiment. The hub and inner portion of the disc may be of high strength, ductile metal and formed by forging or casting, while the outer portion of the disc may be of heat-resistant metal and may be formed by sintering. The blades 88 may be formed integrally with the outer portion of the disc. The inner and outer portions of the disc may be secured together by brazing or by welding. Specification 802,667 is referred to.
Patent GB-713773-A (GB)
Title: Improvements in or relating to thermally-actuated electric cut-outs
Inventor: MARRS TERENCE JOHN DESMOND
IPC: H01H37/66
Filed: 1951-10-12
Abstract: 713,773. Magnetic switches. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Oct. 2, 1952 [Oct. 12, 1951], No. 23767/51. Class 38(5) A thermally-operated cut-out suitable for protecting the space heater disclosed in Specification 484,720, [Group X], comprises a resilient arm 3 fixed to an insulating support 1 and carrying at its free end a contact 11, an armature 12, and a mica strip 13. The armature 12 is of ferromagnetic material having a low Curie point, e.g. it may become non-magnetic at 150‹C and regairi its magnetic properties when cooled to 90‹C, a suitable alloy - containing 33 per cent nickel and the remainder iron. Normally, the armature is held against the bias of the arm 3 by a powerful permanent magnet 15, so that the contact 11 engages a contact 17 positioned within a recess 16 in the magnet. The magnet 15 may be supported by a further resilient arm 4 as shown, or alternatively, the arm 4 may be omitted and the magnet 15 and contact 17 mounted on a fixed support. On overheating of the armature it is released by the magnet to separate the contacts. To re-set the cut-out on cooling a rod 19 is moved to press the arm 4 towards an extension 2 on the support 1, the arm 4 being stiffened by flanges 9 whereby it pivots about an axis 10, Fig. 4 (not shown). When thus deflected the magnet can attract the armature so that on withdrawal of the rod 19 the contacts 11, 17 remain engaged. The Provisional Specification describes a construction in which the magnet and its contact are mounted on a fixed support and the armature and its contact are mounted on the free end of one limb of a U-shape spring, the other limb being fixed to the support.
Patent GB-1153334-A (GB)
Title: Improvements in Photographic Probes for Surgical Use.
Inventor: MURATA RIKIZO
IPC: A61B1/005
Filed: 1966-05-27
Abstract: 1,153,334. Surgical optical devices. OLYMPUS OPTICAL CO., Inc. 27 May, 1966, No. 23769/66. Heading A5R. [Also in Division G2] A photographic surgical probe comprises a camera head 5 attached to a flexible tube assembly, the fore-portion of which has a greater degree of flexibility than the remainder and includes flexible cords or wires 14, 21 extending the length of the tube assembly to a controller (Figs. 1, 15 and 16) at the rear end for flexing the tube assembly. The fore portion of the tube assembly includes a connecting member 13 which is attached to a flexible tube 18 and which supports a pin 11 on which the camera head 5 is pivotally adjustable on pulling a cord 14 against a controlling spring 12. The cord extends through the flexible tube 18 and is operated by a knob 101 of the controller. The flexible rube 18, which may comprise a coiled elastic element, is enclosed in metallic braiding 19 and a vinyl chloride sheath 22 and is flexed by wires 21 which are sheathed in coiled or flexible tubes 21 and are operated by the controller. Alternatively, the fore portion of the tube assembly may comprise annular links (30, Figure 8), the opposite sides 'of each link having apices which abut apices on adjacent links. Cords (21a, 21b) extend through bores in the links and are operated by the controller to flex the tube. An optical fibre bundle (24, Figure 7) may extend from an objective lens behind a window (27) to the rear end of the probe for viewing the cavity, in which the heat 5 is located, through an eyepiece (28, Figure 15). The camera head 5 includes light sources 3 for photographing and illumination and a film 7 which is pulled out of a cassette 4 by a cord 17 operated at the controller.
Patent GB-169160-A (GB)
Title: Improvements in and relating to slub catchers or clearers and tension devices for yarns and the like
IPC: B65H63/06
Filed: 1921-09-07
Abstract: 169,160. McKean, J. O. Sept. 16, 1920, [Convention date]. Clearing-apparatus; tension arrangements.-A combined slub-catcher or clearer and tension device for yarns comprises a resilient yoke having branches 1, 2, forming between them or between lateral extensions 3, 4, a slit through which the yarn passes, and a table 18 on the branch 2 upon which a weighted tensioning-disc 17, loosely mounted on a pin 16, bears, so that the adjustment of the branches by means, such as an adjusting-screw 10, to very the width of the slit does not involve any disturbance of the bearing of the yarn upon the table 18. A pin 8 serves as a guide for the yarn, and a guard 19 is secured to the pin 16.
Patent GB-263229-A (GB)
Title: Improvements in shafting for use with engines
IPC: F02B67/04
Filed: 1925-09-24
Abstract: 263,229. Royce, F. H. Sept. 24, 1925. Driving-arrangements.-In means for driving engine accessories, such as magnetos and superchargers, the crank shaft b drives a gear-wheel d, geared to the magneto &c., by a torsionally resilient shaft c<1>, the drive being also transmitted through a rigid shaft c' when the torsion of the shaft c<1> reaches a predetermined limit. A gear-wheel f geared to the supercharger inhibits torsional vibration. Serrations b<1> in the interior of the shaft b closely engage serrations on a ring c<3>, similarly engaging the end of the shaft c<1>, and loosely engaging serrations c<5> on the shaft c<2>. The opposite ends of the shafts c', c<2> are rigidly connected by serrations, and the gear-wheels d, f are secured to the shaft c<2>. A worm-wheel c frictionally coupled to the shaft c<2> is geared to the starting-handle.
Patent GB-1518746-A (GB)
Title: Process for producing an immobilized biological material
IPC: C12N11/08
Filed: 1976-06-09
Abstract: 1518746 Immobilized enzymes W R GRACE & CO 9 June 1976 [10 June 1975 24 Dec 1975] 23919/76 Headings C3H and C3R A process of immobilizing a biological material selected from one or more of (a) a protein (b) a co-enzyme having at least one primary or secondary amino group per molecule (c) an enzyme, together with a co-enzyme and (d) a non-protein antibiotic having at least one primary or secondary amino group per molecule, the process comprising (1) incorporating the biological material in an excess of an isocyanate capped liquid polyurethane prepolymer to form a resulting mixture, the NCO groups in the prepolymer being present in a molar excess over amino groups of the biological material reactive with the NCO groups and (2) curing the resulting mixture by contacting it with an amount of a curing agent effective for immobilizing the biological material, under foam-forming or non-foam-forming conditions, the resulting mixture being shaped before curing, at least when the biological material consists of a protein, into a self-supporting article or a supported film. Examples describe the support of #- nicotinamide-adenine dinucleotide, and alcohol dehydrogenase on polyurethane foam. Other supported enzymes include glucose oxidase, peroxidase, and urease. Examples 1-3 describe the preparation of prepolymers from polyethylene glycol and toluene diisocyanate, polyethylene glycol and trimethylol propane, and glycerol and ethylene oxide.
Patent GB-480863-A (GB)
Title: Improvements in or relating to suction cleaners
IPC: A47L5/30
Filed: 1936-09-01
Abstract: 480,863. Vacuum - cleaner nozzles. HOOVER HOLDING CO., Ltd. Sept. 1, 1936, No. 23925. Convention date, Jan. 17. [Class 8 (i)] The elongated mouth of a vacuum-cleaner nozzle is made wider at the ends than at the middle. The Figure shows the lower side of the nozzle of a propelled cleaner; the rear lip, 3 of the mouth is an extension of the bottom plate ; the end lips are the flanges of plates in which the agitator is mounted; and the front lip is a member of L-section secured to the front wall. Ribs 16 on the end lips raise the beaters out of contact with the carpet &c. when it is not raised by suction.
Patent GB-415587-A (GB)
Title: Improved device for the delivery of bottles of milk to house doors and the like
IPC: A47G29/20
Filed: 1933-08-30
Abstract: 415,587. Receiving - devices for doors &c. NORTHCOTT, H., 15, Birkbeck Avenue, North Acton, London. Aug. 30, 1933, No. 23990. [Class 18.] A bottle receiver comprises a receptacle 11 for a bottle and means, such as serrated flaps 20 normally closing an aperture 18 in a door &c. 13 to which the receiver is fitted, and readily displaceable against spring influence 21 by insertion of a bottle end-foremost, through the aperture in said door &c., into the receptacle. The receptacle may comprise a supported fabric bag or wire structure, with internal leaf springs, hingedly attached to the door &c. and capable of occupying both vertical and horizontal positions by manipulation from inside the door &c. or by a lever which extends to the outside of the door &c. Two receptacles may be fitted side by side, with a flap between which may be moved to predetermine into which receptacle the bottle shall be received. A locking device for the flaps 20, or a clapper and bell, operated by the weight of the inserted bottle, may be fitted. An indicating device, for the quantity of milk &c. required, may be incorporated in an outside closing flap for the aperture.
Patent GB-1206506-A (GB)
Title: Surge arrester
IPC: H01T1/14
Filed: 1968-05-20
Abstract: 1,206,506. Surge diverters. SIEMENS A.G. 20 May, 1968 [28 Dec., 19671, No. 24002/68. Heading H2H. Surge diverter is formÚd with a cast resin housing which has a shed 15 and an annular recess 16 in its lower face to improve insulation. The diverter shown in Fig. 1 has a fusible wire 9 and a soldered joint 12 which protect the device against overload by breaking, the circuit to an earth connection,7. A spring 13 throws off a casing 11 if either the wire 9 or the joint 12 should melt.:
Patent GB-376993-A (GB)
Title: A combined steam valve and separator
IPC: F16K27/00
Filed: 1931-08-26
Abstract: 376,993. Valve components. BEAUMONT, J. H., 329, High Holborn, London. -(Novo Valve Corporation; 70, East 45th Street, New York, U.S.A.) Aug. 26, 1931, No. 24043. [Class 135.] Closure members.-In a combined locomotive steam valve and separator comprising a longi. tudinally sliding valve 17 which seats on a bevelled annulus 18, the web 20 of the valve 17, which is arranged about midway of the height of the valve, has a pilot valve casing 22 and seat 23, a pilot valve 24 forming part of the stem 24<1> which carries an adjustable head 25 at its lower end to enable the lift of the pilot valve in the opening of the main valve to be varied. A number of check valves 27 are also provided in the web.
Patent GB-834253-A (GB)
Title: Improvements in process for treating complex ores
IPC: C22B3/04
Filed: 1956-08-03
Abstract: Arsenic and sulphur are removed from ores as arsenate or sulphate by treating the ore with aqueous alkali metal hydroxide whilst aerating with air or oxygen.  The primary metal values are separable as elements or oxides.  The reaction is preferably effected at 100-200 DEG  C. at a pressure of 50-200 p.s.i.  Excess alkali metal hydroxide is preferred and the digest slurry is preferably filtered hot, at 75 DEG  C.  Sodium arsenate may be separated from the undissolved residue and recovered by cooling to 32 DEG  C.  The sodium arsenate may be treated with lime to form calcium arsenate and caustic soda which is recycled.  An example refers to the treatment of an ore containing, in addition to arsenic and sulphur, substantial proportions of iron, cobalt and nickel.