baber/WOPTO huggingface dataset:
Patent GB-281706-A (GB)
Title: Improvements in or relating to self-starting asynchronous motors
IPC: H02K17/30
Filed: 1927-12-02
Abstract: 281,706. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts Ges.). Dec. 2, 1926, [Convention date]. Addition to 237,911, Alternating-current rnotors. - In a selfstarting asyn - chronous motor having starting and running windings b, a on the rotor as in the parent Specification the centrifugally-operated magnetic parts c are adapted to be driven into spaces s of low magnetic conductivity located below the starting winding b. The object of this construction is to increase the leakage flux of the winding a at starting without affecting flux conditions during normal running. To guard against lateral displacement of the parts c in the spaces s, guide plates e, Fig. 3 may be provided in the ventilating ducts of the core or insulating bars f, Fig. 5 may be disposed at the sides of the spaces.
Patent GB-1492256-A (GB)
Title: Push-button unit for an electric switch
IPC: H01H13/56
Filed: 1976-08-05
Abstract: 1492256 Mechanical switches TSCHUDIN & HEID AG 5 Aug 1976 [29 Aug 1975] 32651/76 Heading H1N In a push-button switch comprising a pushrod 4, Fig. 1, slidable within a sleeve 2, a latching element 13 for push-push operation of a known type is engageable in heart-shaped grooves 41 on the push-rod 4 and is accessible through an aperture 2d in the sleeve 2 so that it may be selectively moved across a rib 44, Fig. 2, to engage in a longitudinal groove 47 in the sleeve 2 and render the switch retractive. The latching element 13 comprises a bent wire looped over a pin 3c on a sleeve 3 attached to the housing sleeve 2 and resiliently retained by a compression coil spring extending between opposed pins 3c and (3d) Fig. 4 (not shown) whereby a bent up end of the element 13 is urged into the groove 41 or 47.
Patent GB-409796-A (GB)
Title: Improvements in keys for use in railway chairs
IPC: E01B9/58
Filed: 1932-11-18
Abstract: 409,796. Keys for railway chairs. LANGLEY, J., 263, Edgware Road, London, and BROCKHOUSE & CO., Ltd., J., Victoria Works, Hill Top, West Bromwich. Nov. 18, 1932, No. 32676. [Class 104 (ii).] In a chair key of the kind described in Specification 278,910, [Class 104 (ii)], comprising a body portion formed of ribbed end plates formed with a clearance to clear the lettering on the rail web, and a slightly bowed steel spring supported on the body and having its ends bent over, the ends 3, 4 of the spring 1 are bent through a greater angle than in the prior form, and the upper parts of the end plates 5 have pieces 6 pressed out to grip the spring. In the form shown in Fig. 4, the spring is supported on shoulders on the ribs 9 and is gripped by pressed-in portions 12 of the end plates. One end plate may have lugs 13 to engage the edge of the chair jaw.
Patent GB-1477506-A (GB)
Title: Method of moulding plastics materials
IPC: B29C44/00
Filed: 1975-05-06
Abstract: 1477506 Moulding L.D. foam articles G T ENTERPRISES (LITTLEHAMPTON) Ltd 6 May 1975 [24 July 1974] 32772/74 Heading B5A [Also in Division C3] A method of forming a low density foam article comprises moulding a block of foam having a density less than 20 oz per cu.ft., cutting or otherwise detaching a member from the block and moulding the member at an elevated temperature to form the article e.g. a ceiling tile or insulating wall lining. The block may be formed from polystyrene beads having a diameter in the range 0À5-1À3 mm. The member may be detached from the block using a hot wire, by sawing, routing or grinding. The block may be rectangular or circular in crosssection.
Patent GB-327808-A (GB)
Abstract: 327,808. Eppenbach, W. Feb. 13, 1929. Emulsions, making.-In homogenizing and like machines comprising a pair of relatively rotatable discs 17, 20 provided with grinding members 19, 22, the faces of the grinding members are formed at their inner or outer edges or at both edges with tapered, sharp-edged grooves 45, each groove opening towards the edge of the member and comprising one face normal to the grinding surface and one face oblique thereto, the oblique face leading in the direction of motion of the surface. The normal face may be in a radial plane of the disc or at an angle thereto. The grooves are of such a length as to leave a portion of the grinding surfaces plane and are stated to lead the material to be homogenized to such plane portion and also to reduce the size of the particles by the shearing action of their sharp edges. The material may be supplied at the centre of discs 17, 20 and removed at the outer edges or vice versa. The invention is illustrated as applied to the machine described in Specification 306,502 wherein the discs 17, 20 are secured to shafts 18, 21 rotated in opposite directions in bearings 35, 34 by means of pulleys 37, 36, the shaft 18 being axially adjustable to vary the working clearance between the grinding members. The shaft 21 is hollow to permit the passage of liquid, which is supplied through a port 25 in the shaft from a packed chamber 24 fed by a pipe 27, and is delivered after homogenization through a passage 44 in the machine casing. The casing comprises a pair of castings 15, 16 secured together at top and bottom by bolts 32, 33 and having cooling jackets 40 connected by a pipe 42. The machine is mounted on a bed-plate 10 formed with supports 11, 12 for the bearings 35 and 34 and the casing of the chamber 24, and with lugs 13, 14 for the bolts 33.
Patent GB-1103901-A (GB)
Title: Helicopter rotor
Inventor: CULVER IRVEN HAROLD
IPC: B64C27/54
Filed: 1965-07-30
Abstract: 1,103,901. Helicopters. COPPERFIELD CORPORATION. 30 July, 1965, No. 32835/65. Headings B7G and B7W. A rigid helicopter rotor comprises blades 65 connected to a hub 56 by links 70 which are torsionally resilient. Each link is formed by three flat straps, one 73 in a vertical plane and two (71 and) 72, in the same horizontal plane. The aerodynamic axis and centre of gravity of each blade (82, Fig. 4, not shown) are ahead of the feathering axis (80) so that a downward motion of the blade produces a pitch increasing moment. The torsional stiffness of the links, which varies with speed, the mass and position of the counterweights, on arms 88, 90, fixed to the blade, which increase the pitch with increasing rotational speed, and the displacement of the centre of gravity from the feathering axis are arranged so that the blades oscillate about their feathering axis at one cycle per revolution, and the peak pitch displacement occurs 90 degrees after the application of the disturbing force. The peak force therefore occurs a further 90 degrees later because the rotors act as a gyroscope. A downward force on one side of the rotor disc therefore results in an upward force on the other side, and a cyclic pitch variation, and this may be achieved by the pilot's leaning in the required direction of tilt. The blades are attached by links 100. 101 to a swash plate 103, 105 attached to dampers 120 which prevent rapid swash plate oscillations, and acted upon by a spring 109 which resists collective pitch changes. The helicopter described has tandem rotors driven by an engine (16, Fig. 2, not shown), through a belt drive (17), shaft (18) and bevel gears (19, 20). The front of the engine may be raised to slacken the belts and disengage the engine from the rotors. The front rotor shaft (6) is tiltable laterally for yaw control by a worm-and-nut gear (Fig. 12, not shown), driven by turning handlebars (44). In a modification (Fig. 13, not shown), pitch, roll and yaw control are effected by conventional collective and cyclic control applied by control inputs to the swash plates. The blade section (Fig. 5, not shown), is designed to stall at higher incidence than conventional sections, since the helicopter described is relatively small and the blades will operate at relatively low Reynolds No. The leading edge is sharp and the maximum camber is forward of the quarter-chord point. The bottom, and rear upper surfaces are plane.
Patent GB-152244-A (GB)
Title: Improvements relating to the construction of ships particularly those carrying oil fuel
IPC: B63B3/14
Filed: 1919-12-31
Abstract: 152,244. Prins, H. N. Dec 31, 1919. Compartments. - For the purpose of counteracting list to a damaged liquid-carrying vessel, in addition to the ordinary longitudinal bulkhead, a tween-deck is fitted below the load-line. The opposite top and bottom compartments are connected by an opening B near the intersection of the longitudinal bulkhead D and the tween deck E. Modifications are described in which the openings B are carried as near as possible to the ship's side in the lower compartment.
Patent GB-668900-A (GB)
Title: Improvements in or relating to heavy-current air-break electrical switch contacts
IPC: H01B17/26
Filed: 1949-12-23
Abstract: 668,900. Switch contacts. ETABLISSEMENTS MERLIN & GERIN. Dec. 23, 1949. [Dec. 30, 1948] No. 32932/49. Class 38 (v). To prevent the welding together of heavycurrent air-break switch contacts to a degree sufficient to preclude their opening by the operating mechanism, the co-operating contact surfaces axe grooved or fluted, the grooves of one contact making an angle with those of the other to produce a number of small quadrilateral engaging surfaces. The grooves may be of rectangular, trapezoidal, triangular, or circular cross-section.
Patent GB-847675-A (GB)
Title: Internal combustion engines of the compression ignition liquid fuel injection type
Inventor: EVANS AUBREY THOMAS
IPC: F02B3/00
Filed: 1957-10-23
Abstract: 847,675. Fuel injection engines. RICHARDO & CO. ENGINEERS (1927) Ltd. Nov. 10, 1958 [Oct. 23, 1957], No. 33130/57. Class 7(3). In a swirl type combustion chamber, between 60 and 95%, and preferably between 70 and 75 % of the fuel is injected on to the part of the combustion chamber wall adjacent the downstream side of the injection nozzle 15, Fig. 1, the remainder being delivered into the rotating air. In Fig. 1 the fuel is injected as a cone 17 the greater portion of which is directed against the chamber wall whilst the outer portion becomes mixed directly with the rotating air. In Fig. 2 the fuel is injected in two jets, e.g. by an injector of the kind denoted in Specification 617,795, the layer 26 of which is directed against the chamber wall whilst the smaller 27 is directed towards the centre of the combustion chamber. The combustion chamber may be formed as described in Specifications 777,970, 786,329 or 805,104. Specification 617,795 also is referred to.
Patent GB-1465133-A (GB)
Title: Rubber-metal bushings
IPC: F16F1/371
Filed: 1974-07-26
Abstract: 1465133 Flexible bushes R JORN 26 July 1974 [26 July 1973] 33181/74 Heading F2S A flexible bush comprises a rigid inner member 1 in the form of a pin or a tube; an outer tube 3 of rolled sheet metal; and a rubber layer 2 between and vulcanized to the inner member 1 and the outer tube 3, the outer tube 3 being readily radially deformable in comparison with the rubber layer 2 and having a single longitudinally-extending gap 4 which spans the length thereof and which is of a width at least double the thickness of the outer tube 3, and a plurality of holes 5 distributed over the entire surface of the outer tube, the remaining outer surface being partially or completely covered with an adhering coating 6 of rubber, the thickness of which is less than the thickness of the outer tube 3. The inner member 1 and the outer tube may have flanges at either or both ends, Figs. 3, 4 (not shown). The rubber layer 2 may contain openings 17, 18, Fig. 6 (not shown) or a further tube 24, Fig. 7 (not shown). The rubber coating 6 may include lengthwise grooves 7. The inner member 1 may be in the form of a tube with a rubber coating whose thickness lies between 0À1 and 0À5 mm. There is mention of an assembly of a body having a receiving eye in which is received the bush of the invention, wherein the diameter of the eye is substantially less than the outside diameter of the bush.
Patent GB-317064-A (GB)
Title: Improvements in or relating to milk churns, pails, cans and the like
IPC: B65D25/28
Filed: 1928-11-13
Abstract: 317,064. Aktieselskabet Frederiksberg Metalvarefabrik. Aug. 11, 1928, [Convention date]. Ends; foot rings; bottoms.-A milk &c. can or pail of aluminium or other light metal is fitted with an auxiliary bottom part 4, 5, 6 covering the bottom and the lower part of the side wall of the pail, and made from hard elastic material such as steel. The wall of the pail is pressed at 3 into a cavity 5 in the upstanding part of the auxiliary portion. A bottom ring 7 formed with a supporting shoulder 8 is provided, either integral with the auxiliary bottom or secured thereto.
Patent GB-779399-A (GB)
Title: Improvements in porosity measuring apparatus
IPC: G01N15/08
Filed: 1955-11-21
Abstract: 779,399. Testing porosity. - SHEFFIELD CORPORATION. Nov. 21, 1955 [Nov. 29, 1954], No. 33241/55. Class 106 (2). The porosity of sheet material held in a gauging head 12.is measured, using an indicating instrument 11, by measuring the rate of air flow through the sheet material. The material 45, Fig. 5, is held between two head members 16, 17 in contact with a supporting perforated plate 37, whose perforations provide a predetermined surface area for air flow, and in sealing relation with a gasket 32, air being admitted from a regulated source via the indicating instrument 11 and inlet 25 to a passage 28 and escaping at 40 to the atmosphere. The upper head member 17 is pivotable as shown in Fig. 1 for the insertion of the specimen to be tested and is held clamped to the member 16 in its operative position by a toggle lever 20. A range of indicators 47 responsive to different ranges of air flow rates for wide ranges of porosities may be provided, the appropriate indicator being coupled to the inlet 25 by a coupling tube 52. Alternatively a single indicator is provided and a range of perforated plates 37 is employed. The base 15 of the gauging device contains controllable masters for each of the indicators 47, each master comprising a passage 61, Fig. 4, with an inlet orifice 62. a maximum flow outlet 65 and a minimum flow outlet 66 which may be covered in turn by the operator's finger to adjust the associated flow indicator 47 for maximum and minimum readings. During this calibration sequence the tube 52 from the instrument 11 is coupled to the appropriate master inlet coupler 60. Specification 753,021 is referred to.
Patent GB-1416009-A (GB)
Title: Stock pulper
IPC: D21D1/32
Filed: 1974-07-29
Abstract: 1416009 Pulping apparatus ESCHER WYSS GmbH 29 July 1974 [27 Aug 1973] 33429/74 Heading B2A A stock pulper comprises a frusto-conical container 1 Fig. 1 with a screen 6 in the front (small end) wall 3, a rotor 9 adjacent the screen 6 coaxially of the container, a good stock discharge means 7 on the side of the screen opposite the rotor, a light impurities outlet 13 in the (big) end wall 4 and an outlet 12 for heavy impurities in the circumferential wall adjacent the end wall. The end wall 4 is frusto conical and the heavy impurities outlet is formed by an increasingly deep duct or compartment 16 Fig. 2 with a projection 18 at its end wall 17. Waste paper to be processed is supplied via a pipe 14 Fig. 2. The axis of the container and rotor may be horizontal or vertical.
Patent GB-1081426-A (GB)
Title: Improvements in electrical dimmer units for vehicle signals
IPC: B60Q1/26
Filed: 1964-08-17
Abstract: 1,081,426. Road traffic signals on vehicles. T. H. SMITHIES. Aug. 17, 1965 [Aug. 17, 1964], No. 33443/64. Heading G4Q. Energization of vehicle lights operates relay means which include dimmer resistances in series with the turn indicating and stop lights. In Fig. 1 (not shown), a terminal (10) is live when the vehicle lights are on and supplies current to two relays (S and S1) through respective resistances (R and R1). The armatures of the relays are thereby attracted to connect the turn switch (15) and brake switch (19) to the live terminal (10) via respective resistances (R and R1). If the lights are not on, or if a relay or a resistance fails, one or both armatures are in their other positions which connect the turn switch (15) and brake switch (19) directly to a second live terminal (11). In a modification, Fig. 2 (not shown), the relays are replaced by semi-conductor devices.
Patent GB-918854-A (GB)
Title: Means to facilitate the nett weighing of tobacco or the like packed in casks or cases
Inventor: POWELL IVOR JOHN
IPC: G01G19/00
Filed: 1959-10-03
Abstract: 918,854. Weighing apparatus. SOMERS (MATERIALS HANDLING) Ltd., WALTER. Sept. 5, 1960 [Oct. 3, 1959], No. 33577/59. Class 143. [Also in Group XXX] Means for facilitating the net weighing of tobacco or the like comprises a tippler D for upending a cask or case on to a tray at the feedin station A, a feed runway, a track 1, on which the loaded tray travels to a weighing-machine B and a discharge runway, a track 1a on which the loaded tray travels to a tippler for upending the loaded tray at the discharge station and means for lifting the upended cask or case whilst on the feed runway leaving the contents on the tray for passing to the weighing-machine and means for transferring the upended empty cask or case in position over the contents of a tray after leaving the weighing-machine and whilst on the discharge runway. The upended cask travels on the tray from the tippler D along a roller track 1 to a station E where a jib crane 2 lifts the cask leaving the tobacco on the tray and deposits the cask on a turntable 3 between the two tracks 1, 1a. The tobacco advances on track 1 to the weighing-machine and returns on track 1a. A jib crane 4 lifts the cask from the turntable and places it on the tobacco and the tippler then turns over the cask, the filled cask then being moved to the discharge station. A short length of track 1a leads from the weighing-machine to a turntable 1b for changing the direction of travel of the tray to track la. When the tobacco is in cases a jib crane 5 at station H lifts the cases and places them on a roller track 6 feeding to a crane 7 which deposits the cases on the tobacco on the track 1a. The tippler (see Group XXX) runs on rails 23 in a pit 33 between the feed in and discharge stations A, C operated by a pneumatic ram.
Patent GB-486601-A (GB)
Title: Improvements in or relating to building construction
IPC: E04B5/06
Filed: 1936-12-08
Abstract: 486,601. Floors and like structures; beams. LEEMHUIS, J. C. P. Dec. 8, 1936, No. 33735. [Classes 20 (ii) and 20 (iv)] A hollow floor or roof structure comprises a series of lower beams supported at their extremities and having upper and lower flanges and a series of upper beams partly interjacent and resting upon said lower beams and having upper and lower flanges, adjacent upper and lower beams being locked together' in the direction of their load by means of at least one transverse rib secured to one of the adjacent beams and adapted to fit between the flanges of the other adjacent beam. The beams may be formed of reinforced-concrete or from sheet metal. As shown, the floor or roof structure is formed by a, series of closely assembled flanged beams which comprise upper beams A resting on lower beams B, Fig. 6, to provide a hollow structure. The beams are of T-shaped cross-section, each beam A, Fig. 3, having a narrow lower flange 10 and wide upper flange 11 joined by a vertical web 12, while each beam B, Fig. 2, has a narrow upper flange 13 and wide lower flange 14 joined by a vertical web 15, the webs 12, 15 being preferably flared as shown at 17, 18. The beams A, B are formed with transverse ribs 19, 20 arranged alternately on either side of the webs 12, 15, the disposition of the webs 20 to each side of the web 15 being in reverse rotation to that of the ribs 19 about the web 12 so that when the beams are assembled as shown in Fig. 6 with the ribs fitting between the flanges of an adjacent beam, the ribs are in aligned rows extending longitudinally of the structure. Clearance holes 22, 23 may be provided in the webs and ribs of the beams to permit the run of reinforcing members and /or service pipes, conduits and wire along the structure. When the beams are produced in concrete, a metallic reinforcing member built up as shown in Fig. 7 is preferably employed. In constructing such a member for producing an upper beam A, longitudinal rods 24 are secured together by transverse rods 26 for the upper flange 11 while a single longitudinal rod 25 of heavier gauge metal for reinforcing the lower flange 10 is secured to the rods 24, 26 by rods 27 which constitute reinforcements for the web 12. The rods 26, 27 are located in the requisite position for the ribs 19 and suitably shaped rods 28 are secured at these points as a reinforcement for the ribs. The various members of the framework may be secured together by spot welding. In the framework for producing the lower beams B, the middle rod 24 of the three longitudinal rods embedded in the lower flange 14 is formed of heavier gauge metal.
Patent GB-663841-A (GB)
Title: Improvements in or relating to artificial resins and processes of making the same
Filed: 1947-12-22
Abstract: Copolymers are prepared by mass polymerizing by heating a compound having the formula R-CH=CH2, where R is a phenyl or substituted phenyl radical, and a secondary alkyl half ester of an ethylene a ,b -dicarboxylic acid.  Suitable vinyl compounds include styrene and nuclear halogen and methyl substituted styrenes, e.g. p-chloro- and p-methyl-styrenes.  The alkyl groups of the esters preferably contain 3 to 8 carbon atoms and specified esters are isopropyl, sec.-butyl, methyl isoamyl and sec.-octyl half-esters of maleic, fumaric, citraconic, and phenyl, ethyl and benzyl maleic acids.  The half esters may be used in the crude state and may be mixed and contain free acid. Polymerization is effected in the presence of a peroxy catalyst by heating at 60-70 DEG  C. and finally at 125 DEG  C.  A small proportion of b -nitrostyrene may be incorporated as described in Specification 650,838 to obtain polymers of lower molecular weight.  The products which are hard, colourless resins, form alkali solutions which are useful as sizes or paper coatings. Improved water resistance is obtained by drying at elevated temperatures or in the presence of materials capable of reacting with the carboxyl groups, e.g. calcium carbonate, polyethylene amine, polyglycols, polyvinyl alcohol and melamine-formaldehyde resins.  The copolymers are soluble in nitrocellulose lacquer solvents such as ethyl-butyl acetate, glycol ethyl ether, toluene, ethyl or butyl alcohols and butanol-xylol and butanol-petroleum mixtures; and examples are given of compositions with (1) nitrocellulose, (2) polyvinyl butyral, and (3) Manila copal.  On baking with polyvinyl butyral the polymers mutually react forming an insoluble film resistant to softening by heat.  Plasticizers such as oleic and ricinoleic acid soaps, diglycol ricinoleate, glyceryl mono-oleate, dibutyl sebacate and the phthalic ester of diethylene glycol monoethyl ether and pigments such as clay or ground limestone may be added to the polymer compositions. Specification 588,725 also is referred to.