baber/WOPTO huggingface dataset:
Patent GB-529651-A (GB)
Title: Improvements relating to electric motors of the vibrating armature type
IPC: H02K7/065
Filed: 1939-05-24
Abstract: 529,651. Reciprocating motors. KOLSTERBRANDES, Ltd., and SMYTH, C. N. May 24, 1999, No. 15364. [Class 35] A member is given simple harmonic motions in two different directions and with such phase differences that the member moves in an ellipse or a circle. In the arrangement shown the member B is carried on the armature C of an electromagnet D and the armature C is carried on a blade spring G at right angles to a second spring H carrying the armature F of a second magnet E. The magnets are connected in parallel to a source of alternating current and the necessary phase-difference is provided by giving one of the springs F, G, a frequency slightly below and the other slightly above that of the current. The member B drives a rotary disc A by friction, or by toothed gearing. To reverse the motion the phase of the current in the magnet E is changed through 180 degrees by an inductance J.
Patent GB-197217-A (GB)
Title: Improvements in shaft couplings
IPC: F16D1/05
Filed: 1922-06-01
Abstract: 197,217. Whitfield, C. June 1, 1922. Shaft couplings.- In shaft couplings of the kind in which a double-conical split sleeve i is clamped on the shafts by coned collars d, e, the collars are drawn together by sets of bolts, each set comprising a right-hand and left-hand threaded bolt a, b engaging a common screwed sleeve or nut c. The nuts c may be square or hexagonal, or are provided with tommyholes. The sleeve i may normally be held slightly open by one or more springs h, and may have longitudinal grooves i' to increase its flexibility. The bolt-heads a<1>, b<1> are received in grooves d<1>, e' of the collars d, e to prevent their rotation. The nuts c mav be locked bv a wire threaded through holes therein, and may have graduated shoulders co-operating with datum marks on one or both of the bolts of each pair in order to facilitate equal adjustments.
Patent GB-227410-A (GB)
Title: Improvements in door locks
IPC: E05B65/22
Filed: 1924-06-26
Abstract: 227,410. Ternstedt Manufacturing Co., (Assignees of Edgar. F. M., and Archer, T. P.). Jan. 12, 1924, [Convention date]. Latches, sliding.- The latch c of a spring- pressed sliding latch fastening and its operating lever u are retained on the front plate a by guide elements d, q integral with or secured to the front plate. The guide element q has a rib r pressed up therefrom to contact the lever and prevent rattling, or in place of the rib a flat spring may be used. A stop f pressed up from the front plate limits the backward movement of the latch. The latch carries a saddle piece with a turned-up curved end m on which the operating lever acts, and has grooves i, opening towards the cover plate, into which hard grease may be packed to lubricate the bearing surfaces of the latch and cover plate. The spring n of the latch bears against a turnedup ear g on the latch. The latch may also be operated by a key-turned lever 5 in a housing t on the cover plate.
Patent GB-541826-A (GB)
Title: Improvements in the control of electric motors
IPC: H02P3/06
Filed: 1940-10-18
Abstract: 541,826. Control of D.C. motors. CROWTHER, F., NEWLANDS, G. P. F., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. Oct. 18, 1940, No. 15429. [Class 38 (iii)] In the braking control of a series electric motor, when the main contactor assumes the off position, supply to the motor is continued through a resistance R and a second contactor B which is controlled with the main contactor and back contacts FA on the main contactor close a short-circuit around the armature through the resistance DR to slow down the motor rapidly until the contactor B opens under delayed action. The auxiliary contactor B may be located in the main circuit instead of in shunt to the main contactor.
Patent GB-755148-A (GB)
Title: An isophthalonitrile substitution product
IPC: C07C255/51
Filed: 1954-05-25
Abstract: The invention comprises 5-tert.-butyl-isophthalonitrile and a process of making it by vaporizing 5-tert.-butyl-isophthalic acid or its ammonium salt or amide in presence of ammonia and a dehydrating catalyst.  Preferably 5-15 equivalents of ammonia per acid, salt, or amide group and a temperature of 600-900 DEG  F. are employed. Catalysts specified are alumina, silica, thoria, zirconia, the oxides of beryllium, tungsten, and vanadium, and basic aluminium sulphate. Fluid beds are referred to.  The hydrogenation of the product to give 5-tert.-butyl m-xylylene diamine is described.
Patent GB-457463-A (GB)
Title: Improvements in or relating to the manufacture of bonded abrasive blocks, wheels or discs
IPC: B24D18/00
Filed: 1935-05-27
Abstract: 457,463. Grinding-tools. TENNANT, W. J., 111, Hatton Garden, London.-(Carborundum Co. ; Niagara Falls, U.S.A.) May 27, 1935, No. 15457. [Class 60] [See also Group V] Bonded abrasive wheels, discs, or blocks, formed in a mould, have the abrasive grains, whilst in the mould with or without a bond, subjected to the influence of an electrostatic field, whereby the grains are oriented so as to lie with their longest axes in a predetermined direction. In the production of a grinding-wheel, the mould may comprise a metal barrel 2, with a bottom plate 3 of insulating-material, for example, hard rubber, in which is a central electrode 4 surrounded by a poor insulating sleeve 5, for example of wood, which allows sufficient electrical leakage to impart a charge to the grains in the mould ; a high potential is applied between the barrel 2 and the electrode 4. The plate 3 and sleeve 5 may be coated with paper, and may be removed after preliminary consolidation of the wheel, and replaced by steel parts to allow of greater consolidation by higher pressures. The grain and bond are deposited in the mould by a vibratory or gyratory screen 1 and the mould may be tapped or vibrated during filling, and moisture may be applied to the mixture before consolidation; the grains may be coated with a layer of bond before placing in the mould. In order to ensure the required degree of consolidation, the mould is jolted or vibrated during filling, and a follower plate is placed over the mixture in the mould and pressed thereon, and jolting is continued, the electrostatic field preferably being maintained. In place of the plate, plungers may apply the pressure, or a rubber &c. bag may be placed between the upper surface of the mixture and the top of the mould, fluid pressure being supplied to the bag. The grains may be oriented in the mould without a bond, this then being added in liquid form, for example, a solution of shellac in alcohol. In a modification, Fig. 5, the abrasive grains fall from a hopper 45 onto a travelling belt 46 moving in the field between plates 47, 48, the lower of which is faced with poor insulating material. Between the plates is a rotating inverted mould 49, the inner surface of which is sprayed with liquid bond, for example, shellac dissolved in alcohol, onto which the abrasive particles are deposited from the belt by electrostatic action ; at the side of the mould away from the belt is a drying zone, so that the abrasive is deposited in layers in the mould and with the grains oriented. Specification 396,385 is referred to. Reference has been directed by the Comptroller to U.S.A. Specification 1,930,788.
Patent GB-447804-A (GB)
Title: Improvements in or relating to electro-magnetic sound recording and/or reproducing machines
IPC: G11B15/50
Filed: 1935-05-28
Abstract: 447,804. Ratchet clutches. LORENZ AKT.-GES., C.. 1, Lorenzweg, Tempelhof, Berlin. May 28, 1935, No. 15508. Convention date, June 9, 1934. [Class 80 (ii)] [See also Group XXXVIII] Each spool 4 for the record carrier 5 of an electromagnetic sound recording and/or reproducing machine is associated with two clutch members 1, 2, the former of which is adapted to be driven by a belt 3 whilst the latter carries the spool 4. A pair of studs 7 mounted on the member 1 project through arcuate slots 11 in a disc 8 mounted on a trunnion 10 of the member 1 and having a brake block 12 in contact with the circumference thereof. Each stud 7 has rotatably mounted thereon a sectorshaped wedge 6 preferably consisting of hard paper with a cloth insertion and each provided with a slot 13 in which a pin 9 on the disc S is adapted to engage. In operation, when member 1 is rotated in a clockwise direction, Fig. 2, the studs 7 slide in the slots 11 in a similar direction whilst the wedges 6 are moved in the reverse direction on the pins 9 so that their curved edges are withdrawn from contact with member 2. Disc 8 is prevented from rotating by the brake block 12 until the studs 7 come against the ends of the slots 1 1 when the friction between the parts 8, 12, is overcome and the parts 1, 7, 6, 9 and 8 rotate conjointly, the part 2, however, not sharing in this movement since the wedges 6 have been withdrawn out of contact therewith. On reversal of the drive to the member 1, the movements of the parts 1, 7, 6, 9 and 8 will be reversed so that the curved edges of the wedges 6 are brought into contact with the member 2 which is then driven by the member 1.
Patent GB-858475-A (GB)
Title: Improvements in or relating to radar display arrangements
Inventor: PLAISTOWE DONALD LEOPOLD
IPC: G01S7/22
Filed: 1959-05-06
Abstract: 858,475. Radar. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. Oct. 5, 1959 [May 6, 1959], No. 15542/59. Class 40(7). Relates to a radar display system in which polar-co-ordinate radar signals from a radar R are converted into rectangular-co-ordinate signals in a scan converter SC, combined in a mixer M with video signals obtained by scanning a map 9 with a camera tube 4 or flying spot scanner and applied to a plurality of rectangular-raster cathode-ray tubes T each of which displays the map and the radar target images. According to the present invention an additional display tube TT is located adjacent the map 9 and a transparent endless belt 7 passes over the screen of the tube TT, under the map 9 and around driving sprockets 6, the image areas of the camera and display tubes 4 and TT being defined by apertures 5 and 2. Alternatively, the endless belt may be replaced by two slidable interconnected members. When it is required to identify a radar target with a distinctive marker, e.g. the numeral 47, Fig. 2, or to add symbols providing supplementary information such as target height, target ascending or descending, the corresponding mark or symbol is made on the belt 7 adjacent the corresponding target image and the belt is then moved by a hand wheel 10 so that the portion that was over the aperture 2 is now over the aperture 5 and consequently the camera tube 4 produces a corresponding marker image on all the display tubes. Additional information, e.g. weather states, to be displayed by the side of the displayed radar pictures may be marked on a narrow belt 8, Fig. 2, which may be moved independently of the belt 7 by means of a hand wheel 11. The belts 7 and 8 may be marked by china glass pencil or by attaching opaque markers. In order to prevent the marker image appearing on the display screens whilst the belt 7 or 8 is being moved, a switch 13 controlled by the belt may (1) switch off the light 12 illuminating the image plane of the camera tube 4, (2) blank the camera tube 4, (3) open circuit the signal channel between the camera tube 4 and the mixer M, or (4) blank the display tubes T and TT.
Patent GB-637962-A (GB)
Title: Improvements in or relating to vortex type separators for paper pulp
IPC: B04C5/10
Filed: 1948-06-09
Abstract: 637,962. Centrifugal separators. BIRCHARD, W. H. June 9, 1948, No. 15554. [Class 23] A vortex separator for purifying paper pulp has a long vortex chamber 10 of which the lower third is defined by a perforated wall 15 through which separated matter is discharged into an outer chamber 33. The perforations may be helical slots 34 which are parallel with the flow of the pulp. The walls 15, 16 are supported on a plate 20 ported to permit separated matter to pass from both the vortex chamber and the outer chamber 33 into a sump 21. The plate has an upwardly converging hole 36 through which pulp in the top of the sump can return to the vortex chamber.
Patent GB-978259-A (GB)
Title: Improvements relating to air cushion vehicles
Inventor: MARKHAM BASIL GERVASE
IPC: B60V1/14
Filed: 1962-04-24
Abstract: 978,259. Air cushion vehicles. BRISTOL SIDDELEY ENGINES Ltd. April 24, 1963 [April 24, 1962], No. 15578/62. Heading B7K. An air cushion vehicle has a common air intake for a fan 12 and its engine 10, the intake leading to an annular duct 13 containing the fan, and porting 50 in the duct wall which leads to the engine intake is so located that air supplied to the engine is subject to action by members rotating with the fan (e.g. the fan blades) immediately before entering the porting, so as to become separated from spray and dust particles. In the Figure, the intake 16 has a guard grid 51, and air from the fan is delivered to a diffuser duct 45 feeding a cushion containing curtain. The engine intake duct 48 communicates with the interior of the hub, and the centrifugal effect of fan 12 tends to urge spray and dust particles past the porting 50. A tractor propeller 14 in a guard 52 is rotatably mounted on a pylon 34 inside the duct 13, and engine 10 drives the propeller, and also the fan through epicyclic gearing 23. Rotation of shaft 40 rotates the propeller in azimuth. If a pusher propeller 14a, shown in broken lines, is used the overhang is reduced. In Fig. 2 (not shown), the engine is mounted with the propeller on top of the air intake, and a downwardly extending power take-off shaft drives the fan. Intake air traverses paddle wheel blades mounted on the fan before entering a duct within duct 13, and is fed to the engine.
Patent GB-296823-A (GB)
Title: Improvements in or relating to fire extinguishers
IPC: A62C13/00
Filed: 1927-06-13
Abstract: 296,823. Schmidt, K., and Excelsior Feuerl÷schgerõte Akt.-Ges. June 13, 1927. Extincteurs; portable pressure reservoirs.- In a liquid extinguisher of the kind in which the air space f within the extinguisher communicates with the air space in the upper part of the discharge tube b by means of a U-shaped vent pipe d, e, the lower portions d<1>, e<1>, of the vent pipe which open into the water-seal chamber c, are of increased cross - sectional area. The upper end of the pipe d is preferably closed by a nozzle g having a very fine gas inlet h.
Patent GB-849837-A (GB)
Title: Improvements in or relating to porous membranes and methods of manufacturing such membranes
Inventor: PLURIEN PIERRE
IPC: B01D39/12
Filed: 1957-05-16
Abstract: 849,837. Coated metallic fabrics. COMMISSARIAT A L'ENERGIE ATOMIQUE. May 16, 1957 [May 22, 1956], No. 15669/57. Class 140. A porous membrane constituted by a corrosion-resisting metallic fabric and a porous layer of a fluorohydrocarbon polymer, chlorofluorohydrocarbon polymer or a halogenated hydrocarbon grease or wax, embedding said fabric is produced by forming an emulsion of at least one of the polymers, grease or wax, treating the emulsion with a coagulant to flocculate it into a moist paste, coating the metallic fabric with said paste, fixing said layer and eliminating the coagulant therefrom. The layer may be fixed by passage between the rollers of a rolling- machine, and then dried in air to eliminate the coagulant. After drying the coated fabric may be heated at a temperature averaging 300 C. for several hours, cooled, washed with alcohol and again passed through a rolling-machine and dried in air. The coating may contain polytetrafluoroethylene or polytrifluoromonochloro ethylene, and also corrosion-resisting powders preferably selected from nickel, calcium fluoride and titanium dioxide which are added to the emulsion. A non-ionic wetting-substance, e.g. an alkylaryl polyether alcohol or a polyethylene glycol ether of an alkylated phenol, may also be added to the emulsion. The corrosion-resistant metallic fabric may be of nickel, silver, or a metal coated with nickel or silver. The coagulant may be selected from methyl, ethyl, isopropyl, butyl, isobutyl, and isoamyl alcohols, cyclohexanol, acetone and acetic acid.
Patent GB-1175033-A (GB)
Title: A Method of Making Briquettes from Cement Raw Material
IPC: C04B7/40
Filed: 1968-04-02
Abstract: 1,175,033. Cement. POLYSIUS G.m.b.H. 2 April, 1968 [11 May, 1967], No. 15678/68. Heading C1H. Cement briquettes are made by moistening the raw material with 10-20% moistening medium and forming the material into sausageshaped briquettes in a press, the amount of moistening medium added being controlled to maintain the power consumption of the press at a given level whereby the briquettes have a predetermined moisture content.
Patent GB-460944-A (GB)
Title: Improvements in or relating to hay rakes
IPC: A01D76/00
Filed: 1936-06-04
Abstract: 460,944. Hay rakes. CLAYTON, C. E. EVERY-. (Aktiebolaget Overums Bruk) June 4, 1936, No. 15682. [Class 6 (iii)] A tumbling rake of the kind in which a single row of tines attached to a transverse main beam on which is rotatably mounted a controlling lever, forms, with the beam, a rotatable structure which can be periodically overturned about the points of the tines to deposit the load has members upstanding from the rotatable structure in the working position of the tines provided with runners adapted to support the rake in its reversed position these members being so shaped that the rake is caused to start turning from its reversed position to its working position by downward pressure on the beam. The tines 2 project from a metallic tubular main beam 1. The tines are resilient in a plane perpendicular to the beam and at their front ends are shaped so as to be concave upwardly. A tubular controlling handle 3 is positioned at the centre of the beam and at each end the beam carries an upstanding member in the form of an arm 4. The arms may be steel castings or made of malleable cast iron, and each is provided with a vertical row of holes 6 for connection with a draw-bar. The arms 4 have.peripheral flanges 9, 91, the flange 9 extending in an arc of increasing radius in an upward and forward direction relatively to the beam 1. A portion 10 of the flange 9<1> serves as a runner for the rake in the working position. The flange portion 10 terminates in a lug 11. Each of the flanges 9 is provided with a transverse ridge 12. The handle 3 is adapted to slide in its socket, and is normally held in a position with its extreme end engaged in a notch in an annular member secured to the beam by a spring. When the handle is pulled upwardly it is released from the notch and the points of the tines tend to dig into the ground, causing the rake to rotate in its bearing in the socket of the handle 3. If the handle is kept raised the rake will move along the ground riding on the runners formed by the flanges 9 with the tines extending rearwardly, Fig. 3. By pressing down on the handle the ridges 12 and afterwards the lugs 11 are caused to engage the ground to turn the rake into working position again. The locking bolt may be movable relatively to the handle being adjusted by a pull-rod. The tines may be resiliently attached to the beam. The locking bolt may be arranged to engage with any one of a series of notches to suit the height of the attendant.
Patent GB-156562-A (GB)
Title: Improvements in apparatus for the separation of coke or carbon from slag or the like
IPC: B03B5/62
Filed: 1920-06-10
Abstract: 156,562. Soc. le Coke Industriel. Jan. 7, 1920, [Convention date]. Addition to 120,932. Upward-current classifiers.-Apparatus of the type described in the parent Specification is provided with movable partitions f<1>, f<2> each operated through a joint f<3> and slide f<6>, the lower part of slide f<6> being bent round an iron crossbar q fastened to supports r screwed on longitudinal bars s of the vat a, thus enabling the upward flow of water to be adjusted as required. The inlet pipes i, provided with three different-sized holes, are placed vertically under the partitions f<1> and are enclosed by concentric jackets i<3> provided with a number of small holes i' for the issue of water. The coal &c. outlet j has a grating j<3> for filtering the wash and a perforated table j<4> for a further sorting by hand of the recuperated products.
Patent GB-691744-A (GB)
Title: Adjustable brush moistener for gummed tape dispenser
IPC: B65H35/00
Filed: 1950-06-23
Abstract: 691,744. Moistening gummed tape. KRUEGER, T. H. June 23, 1950. [June 30, 1949] No. 15776/50. Class 140. A gummed tape dispenser comprises a water tank having a plurality of inverted moistening brushes mounted therein in tandem and means for changing the vertical adjustment of any one of said brushes with relation to another of said brushes. The tape 20, Fig. 1, is taken from a roll 22 by means of rollers 24, 26 actuated through suitable gearing by a handle 28. The tape passes along a fixed guide plate 30, past a shear cutter 32 and is held in contact with brushes 60, 68 by a pivoted pressure plate 34. The brushes are mounted within a chamber 44 having a lateral extension 46 supplied with water by an inverted bottle 50. The forward brush 60 rests upon the floor and lip of the chamber 44 and the rear brush 68 is mounted upon a spring controlled pivoted plate 72. Rotation of the plate 72 to obtain vertical adjustment of the brush 68 is controlled by an adjustment screw 86 located in the extension 46 of chamber 44. In a modification, Fig. 5, three brushes are mounted upon a pivoted plate 102 to which are attached a compression spring 110 and an adjustment screw 112. Spacing pins 113 are provided near the top of the chamber. In a further modification, Fig. 7, each brush is attached to an arm 114 extending from a block 116 which is provided with a suitable bore to slide upon a guide pin 120. Vertical adjustment is controlled by a screw 126. In further modifications, Figs. 8 and 10, the brushes rest upon the floor of the chamber and vertical adjustment may be obtained by rotation of screws 138, Fig. 8, screwed into the ferrule 136 of the brush, or by variation, of the position of an adjustable foot, 146, Fig. 10, attached to the ferrule. In these modifications the tank is provided with ribs such as 132, 134, Fig. 8, to accommodate the brushes.
Patent GB-593962-A (GB)
Title: Improvements connected with teapots, coffee pots or like vessels
IPC: A47J31/14
Filed: 1945-06-20
Abstract: 593,962. Strainers for teapots &c. SIPPEL, Ltd., B. & J., and SIPPEL, B. June 20. 1945, No. 15781. [Class 66] A detachable strainer covering the spout opening A of a teapot &c. comprises a perforated slide-plate D movable in channelled guides C, closed at their lower ends. A flange E normally closes the upper ends of the guides.