baber/WOPTO huggingface dataset:
Patent GB-724675-A (GB)
Title: Method of making dust cores of high permeability
IPC: H01F1/16
Filed: 1953-02-13
Abstract: Hollow spherical particles of iron are produced by the oxidized pig-iron process for compressing together to form magnetic dust cores.  This process comprises spraying liquid ironcarbon alloy by compressed air so that CO is developed and inflates the particles into hollow spheres.  The powder is subsequently heated to 950 DEG C. to remove surface dross and the contained carbon.  The iron alloy may contain Si, Mn, and Al. The mixture from which the core is compressed may contain particles of different sizes and ferrite powder, and may be shaken together mechanically or by ultra sound devices.
Patent GB-524853-A (GB)
Title: Plate clutches
IPC: F16D13/71
Filed: 1939-02-09
Abstract: 524,853. Friction clutches. STANLEY, G. E. Feb. 9, 1939, No. 4258. [Classes 80 (ii)] A plate clutch includes a presser-plate 13 in driving connection with the driving member 11, coil springs 19 acting between the driving member and a number of arms 15 mounted on the driving member, abutments 21 interposed between the arms 15 and the presser-plate, so that the presser plate is biassed in the engaging direction by the springs 19, and means by which the pressure of the springs can be removed at will for effecting disengagement of the clutch, these means being supported by the arms 15 and serving to increase the engaging pressure under centrifugal action. As shown in Figs. 1 and 2, the presser-plate 13 slides on axially extending pins 12 secured to the driving casing 11. The arms 15 are twin-spring arms bolted at 17 to the casing 11 and bear at their outer ends against the springs 19 in recesses 18 in the casing. The disengaging means consists of pins 20 secured to the spring arms by bolts 21, the heads of which form abutments between the spring arms and the presser-plate. Each pin 20 is hinged to a withdrawal lever 22, the inner end of which coacts with a thrust ring 23 sliding on the pins 12 as described in Specification 505,841. A fulcrum for the lever is formed by a pin 24 with rounded ends engaged in sockets on the casing and the lever, lateral movement of the lever being prevented by a pair of ears 25 on the casing. The driving effect of the clutch is assisted by the centrifugal effect of the pins 20. In a modification, the levers' 22 are directly hinged on the driving casing and slidingly engage heads on the outer ends of the pins 20. In another modification, the spring arms are replaced by relatively rigid arms pivoted on the casing at their inner ends and slidable on the pins 12 with slight clearance to allow of rocking within limits, an abutment 29 on each pin limiting the sliding movement. Specifications 422,816 and 468,575 also are referred to.
Patent GB-633274-A (GB)
Title: Improvements in or relating to cigarette ash trays
IPC: A24F19/00
Filed: 1948-02-13
Abstract: 633,274. Ash trays. COHEN, SONS & CO., Ltd., G., and NYE, C. E. G. Feb. 13, 1948, No. 4261. [Class 130] An annular cigarette support 2 surrounding an ash receptacle 1 is itself surrounded by a flat flange 4 which may have flat ribs 4a, 4b and is sufficiently wide to support falling cigarette ends. Cigarette supporting grooves 2a or pairs of ribs may be formed in an annular removable cap member, the grooves sloping downwards towards the receptacle 1. The flange 4 may be embossed or otherwise provided with advertising matter or other ornamentation.
Patent GB-879570-A (GB)
Title: Improvements in or relating to rotary plug valves
Inventor: JACKSON LOFTUS
IPC: F16K5/04
Filed: 1957-02-07
Abstract: 879,570. Valves. JACKSON (ENGINEERS) Ltd., JOHN. Feb. 7, 1958 [Feb. 7, 1957], No. 4266/57. Class 135. A rotary plug valve of the type having inlet and outlet openings 13,14, respectively, which are placed in communication by a substantially diametrical hole 19 through the plug on suitable adjustment thereof, is characterized in that a single O-ring 21 of resilient material such as rubber encircles the plug circumferentially and is received in a groove either in the plug or the valve body such that when the valve is shut, as shown, the inlet and outlet openings 13, 14 are on opposite pressure sides of the ring. The ring may extend round the hole 19 and round the plug as indicated by a trace x-y so that a part of the ring which is substantially in a plane normal to the axis of the inlet opening as shown, lies between this opening and the hole 19; another part of the ring being substantially in a plane normal to the axis of the plug.
Patent GB-650169-A (GB)
Title: Improvements in building boards or shcets suitable for lining walls and ceilings andfor similar purposes
IPC: C04B20/02
Filed: 1948-02-13
Abstract: A building board or sheet is composed of a mixture of calcined diatomaceous earth or uncalcined decarbonized diatomaceous earth and cement felted with asbestos and vegetable fibres such as flax fibres. The asbestos is preferably present as 8-9 per cent of the mix, the flax as 5 per cent, the diatomaceous earth as 34-37 per cent, and the cement as 50-52 per cent.
Patent GB-755118-A (GB)
Title: Coupling nut assembly
Inventor: ASHMAN MICHAEL
IPC: F16L33/00
Filed: 1954-02-13
Abstract: 755,118. Securing nuts; circlips. DUNLOP RUBBER CO., Ltd. Jan. 27, 1955 [Feb. 13, 1954], No. 4289/54. Classes 89(1) and 89.(2). [Also in Group XXVIII] A coupling-nut 13 having an inwardlyextending annular lip 14 is removably held on a nipple 11 by outwardly-sprung means, e.g. a split, resilient ring 16, engaging an annular groove 12 in the nipple and the lip 14. As shown, the groove 12 and ring 16 are rectangular in cross-section, and the nut has a number of radially-extending holes 15. A combination tool comprising four pegs is inserted into diametrically-opposed holes 15 to compress the ring 16 into the groove 12 to allow removal of the nut from the nipple. In modifications, the sprung'means comprises (a) two or more partannular portions forced outwardly by a spring in the base of the groove 12, and (b) a number of pivoted latch-members in the groove 12 urged 'outwardly by resilient means in the groove.
Patent GB-245954-A (GB)
Title: Improvements in and relating to cushion connections for springs and other parts of vehicles
IPC: B60G11/42
Filed: 1925-02-16
Abstract: 245,954. Imray, 0. Y., (International Motor Co.). Feb. 16, 1925. Radius rod; frame components, applying and combining.-The housing b of the cushion connection described in Specification 188,529 in which a spring e or other metallic element is embodied in a rubber block f, is constructed with a detachable cap c to which is secured a sub cap c<1> adapted to retain one end of an element, such as a radius rod g, the other end of which may be connected to the axle. In a modification, the cap c is formed with a split spring bearing adapted to clamp a truss rod extending across the chassis of a motor vehicle.
Patent GB-197058-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04M1/15
Filed: 1922-02-14
Abstract: 197,058. Crowe, D. C. Feb. 14, 1922 Automatic exchange selectors. - Mechanical means for moving a cord d and plug e so that the plug is inserted in or withdrawn from a jack, as in Specification 168,611, comprises a toothed disc b which carries the cord d in a spiral groove c and is rotated by a gear-wheel o when the latter is moved by a control member q into engagement with a driving wheel p. The cord is delivered from or withdrawn into the disc b through a pivoted tube h. The return movement of the disc is preferably effected by means of a clock spring l which is tensioned during the forward movement, rotation being prevented until required by a catch r under the control of the member q.
Patent GB-1536608-A (GB)
Title: Cold moulding of flexible articles
IPC: F02K9/34
Filed: 1977-02-03
Abstract: 1536608 Cold moulding of solid pre-pregs CANADA NATIONAL DEFENCE MINISTER OF 3 Feb 1977 [6 Feb 1976] 04388/77 Heading C3B An elastomeric uncured but curable elastomer is reinforced with a fibrous siliceous material, the dough is aged and formed into a sheet. the sheet is then subdivided and cold moulded into a suitable blank form without cure after which the article is shaped and cured. A suitable system comprises epoxy resin, poly(butadiene) dicarboxylic acid, asbestos fibres and asbestos floats.
Patent GB-575234-A (GB)
Title: Improvements in and relating to pre-cast concrete sheets, slabs or the like
IPC: E04B1/68
Filed: 1944-03-09
Abstract: 575,234. Concrete slab walls. UNDERWOOD, J. B. S. March 9, 1844, No. 4407. [Classes 20 (iv) and 87 (i)] To prevent extrusion of viscous filler, the joint between adjacent pre-cast concrete wall sheets 3 is covered on one side by a channel 4 secured to or integral with one sheet and extending over a rib 8 on the adjacent sheet, forming an expansion chamber, the arrangement being such that on expansion or contraction of the sheets, the total capacity of the chamber plus the spaces between the sheets remains substantially constant. A frame member 10 is incorporated in one form of the invention, and the wall 5 of the channel may extend into a recess in the adjacent sheet. Apertures in the rib 8 may facilitate the flow of the filler.
Patent GB-121875-A (GB)
Title: Improvements in Trussed Roofs for Buildings and the like.
Inventor: SPEAKER GUSTAVE ROBERT
IPC: E04B7/02
Filed: 1918-03-13
Abstract: 121,875. Speaker, G. R. March 13, 1918. Roofs; ceilings.-A principal rafter 1 and its trusses or struts 1, 2, 3, 4, 5 are made of channel-iron with welded joints. Two such trussed rafters spanning the building are bolted together at the ridge A and are connected between the trusses by a tie-beam 6 with bolting tongues 28. Each rafter may have a welded bearing plate 16 to be bolted if desired to longer plates on the walls. Such rafters support channel metal purline 8 on which in turn metal battens 10 are arranged. When a ceiling is required, stringers 12, Fig. 13, to which the ceiling sheets are attached, are suspended by hangers 13 hooked on the trusses and the beam 6.
Patent GB-1420598-A (GB)
Title: Pivoting window
IPC: E05C3/14
Filed: 1972-01-31
Abstract: 1420598 Windows; window fastenings INTERNATIONAL WINDOW CO LTD 31 Jan 1973 [31 Jan 1972] 4444/72 Headings E1J and E2A  A pivotable window has its pivot axis passing through opposing faces of sash and fixed frame members 5a, 3a, the frame member being hollow and containing catch means 7 (Fig. 4). the catch having a projection 28 spring biassed to project through an aperture in the frame member into an aperture or recess in the sash member when the sash has been pivoted to a predetermined position, the catch being manually displaceable against the bias to release the sash for closing.  Horizontal pivot stud 27 (Fig.3) is welded to a bar 18 which is riveted to the sash member, the stud extending through the frame member and being secured by spring washer 22 and nut 20. Catch member 7 is pivoted in a housing 6 in the frame member 3a and is biassed by spring 14'. Two studs 28 welded to member 7 project through respective apertures above and below the pivot 27. When the window is opened the upper stud engages in an aperture in bar 18 to retain the window. To release the upper stud, the lower stud is depressed manually. The window may be held horizontally, the studs projecting on upper and lower rides. The window has a latch assembly at the top comprising latch member 8 pivoted to housing 9 and biassed by spring 14 to engage member 10.  An alternative latch assembly at the bottom comprises a slidable bolt (150, Figs. 14-16, not shown) biassed by spring (162). The sash has side frame members 5a, 5b only, closed by end caps 13 or has a complete frame. The frame members are of metal or plastics.
Patent GB-124779-A (GB)
Title: Method of Silencing Rifled Ordnance and Increasing the Muzzle Velocity thereof.
Inventor: CHOWN JOSEPH ALFRED
IPC: F41A21/46
Filed: 1916-03-25
Abstract: 124,779. Chown, J. A. March 25, 1916. Ordnance design; chambers; sound of discharge, modifying.-Consists in providing the muzzle of a gun with a valve worked by the gas check of the projectile to divert the gun gases into a silencer and then to eject the gas check. In the form shown, a tube g is fixed to the muzzle of a gun barrel f and contains another tube h, which is normally held inwards by a spring o interposed between rings m, i on the tubes g, h respectively. The rings m, i have each an axial hole for the passage of the projectile' a of streamline form; but the sabot c, which is normally secured to the projectile by means of wax, is checked by the ring i and drives this ring forwards, compressing the spring o and opening the ports p, r to divert the gun gases through a tube q to a silencer. Near the end of this action a plunger l on the ring m is depressed by the ring i and ejects the sabot c into the tube q. The Provisional Specification describes also (1) a sabot having a front steel part cut to fit the rifling of the gun and a rear gas check copper washer, and (2) a cartridge case made with one or more projections to fit recesses in the chamber of the gun, and cartridge cases and gun chambers made of square or many-sided sections to ensure the correct alinement of the cut steel part of the sabot with the rifling of the gun.
Patent GB-590632-A (GB)
Title: Improvements in pyrophoric lighters
IPC: F23Q2/08
Filed: 1945-02-22
Abstract: 590,632. Pyrophoric lighters. CARR, J. J. Feb. 22, 1945, Nos. 4463 and 10843. [Class 75 (iii)] In a pyrophoric lighter, pressure on a sliding bar 31 withdraws a spring-pressed plunger 28 from a slot 30 in the pivoted cover 7 of the lighter and a sliding plunger 16 is moved by a spring 15 to raise the cover 7 by a link 20 and to rotate a flint wheel 3 by sliding a rack 22 engaging a pinion 14 carrying on its upper surface a spring plate 24 engaging ratchet teeth on the lower surface of the flint wheel. The flint wheel rotates in contact with a spring- pressed flint, arranged in a bore in a housing 6 above the plunger 16 and produces sparks for igniting the wick 2. The bores in the housing 6 may be closed by screws or sliding wedge plates 36. In another construction,' the flint wheel 3 and pinion 14 are mounted on a horizontal axis transversely of the lighter top and the flint and flint spring in a vertical bore in the fuel container.
Patent GB-370107-A (GB)
Title: A device for the progressive segmentary illumination of luminous electric discharge tubes
IPC: H05B41/44
Filed: 1931-02-12
Abstract: 370,107. Discharge lamps. BRETTMON, J., 226, Rue de Rivoli, Paris. Feb. 12, 1931, No. 4471. [Class 39 (i).] The progressive segmentary illumination of a lamp having a number of intermediate electrodes is effected by connecting each segment to an individual transformer, the primary of which is connected directly in parallel to the mains. A switch m is rotated gradually to illuminate the whole tube, Fig. 3, or to illuminate consecutive segments to give the appearance of a segment travelling along the tube, Fig. 4. The transformer feeding the first segment to be illuminated is adapted to give a comparatively high voltage. In a modification, the illumination of the tube may start at the centre.
Patent GB-669338-A (GB)
Title: Improvements in or relating to the production of dichlorobutenes
IPC: C07C17/02
Filed: 1949-02-18
Abstract: Dichlorobutenes are produced by passing a gaseous stream comprising at least 2 volumes of butadiene and 1 volume of chlorine into a reaction zone, maintained at a temperature in the range 180 DEG  to 240 DEG  C. and containing a bed of finely-divided contact material such as coke, with a linear velocity sufficient to maintain the finely-divided material in suspension within the reactor, isolating the desired dichlorobutenes and returning unreacted butadiene to the process.  The process may be carried out continuously.  Specification 513,947 and U.S.A. Specification 2,299,477 are referred to.
Patent GB-308424-A (GB)
Title: Improvements in or relating to collapsible hampers
IPC: B65D6/16
Filed: 1928-02-14
Abstract: 308,424. Hobson, A. E. Feb. 14, 1928 Folding baskets.-A collapsable hamper comprises six rectangular pivotally-connected frames formed of tubular parts covered with wire netting &c. The top and bottom members 5, 6, when folded for collapsing the hamper, are arranged to be within the side frames 3, 1, to which they are hinged, the side frame members subsequently folding flat in the known manner. Any of the frames may be strengthened by tubular cross-members 10 or otherwise.
Patent GB-540016-A (GB)
Title: Improvements in or relating to filling elements or headers for machines for filling bottles or the like with liquid
IPC: B67C3/26
Filed: 1940-03-13
Abstract: 540,016. Filling bottles &c. POWLEY & SONS, Ltd., R., and POWLEY. O. March 13, 1940, Nos. 4707/40 and 4230/41. [Class 125 (ii)] Milk, carbonated beverages &c. is filled into bottles &c. through a filling tube 6, Figs. 3 and 6, communicating with a reservoir 1 and reciprocable vertically in it a fluid-tight way by being connected to a flexible diaphragm 4. In the device shown in Fig, 3 filler tube 6 and vent tube 5 move up together when bottle 19 is pressed on cap 18, a spur 17 opening vent valve 14. Continued movement causes spring 16 to move tube 5 relatively to tube 6 so that liquid enters past flange 12. Stops 21 limit the motion. In another form the filling and venting valves are actuated by rods 25a, 26a, Fig. 7, which contact fixed stops 25 26 when the tank is rotated. In Fig. 6 a tube 43 is thus actuated by a stop to move a plunger 40 downwards. This connects tube 6 with a channel 44 and connects the counter-pressure with the interior of the bottle. Ports 38 are also opened and admit liquid. Another form of vent is also described.
Patent GB-1377486-A (GB)
Title: Polyether purification process
IPC: C08G65/30
Filed: 1971-02-16
Abstract: 1377486 Polyethers IMPERIAL CHEMICAL INDUSTRIES Ltd 2 Feb 1972 [16 Feb 1971] 4722/71 Heading C2C [Also in Division C3]  Polyethers contaminated with basic inorganic materials are purified by treatment in the presence of water with a compound containing at least one carboxylic acid group and at least two hydroxyl groups, suitably tartaric acid. Treatment temperatures preferably range from 25‹ to 150‹ C. Volatile material including water may be removed by subsequent heating under reduced pressure, and a further filtration step removes insoluble material. The acid-treated material may be optionally treated with an insoluble basic material and also with an adsorbent material to remove coloured impurities. Polyethers suitable for treatment include those having a hydroxyl equivalent weight of from 60 to 3000 obtained by the polymerization of one or more alkylene oxides in the presence of an alkaline catalyst and optional amounts of compounds containing one or more active hydrogen atoms. Examples describe the preparation and purification of ethylene oxide endcapped glycerol-propylene oxide condensation products (M.W. 3500), of a tolylene diaminepropylene oxide condensation product (M.W. 470), of a low molecular weight condensation product of propylene oxide and a mixture of triethanolamine and tolylene diamine, and of a glycerol-propylene oxide condensation product (M.W. 310).
Patent GB-779445-A (GB)
Title: Improvements in and relating to dynamo-electric machines
IPC: H02K3/50
Filed: 1956-02-15
Abstract: Electric motor windings are wrapped with glass cloth (see Group XXXV) impregnated with a polymerizable mixture comprising: (1) an unsaturated alkyd resin e.g. diethylene glycol maleate; (2) a copolymerizable monomer, e.g. styrene or diallyl phthalate; (3) an accelerating catalyst, e.g. benzoyl peroxide; (4) a polyvinyl acetal, e.g. formal resin, in 15-75 per cent by weight of the total of (1), (2) and (4); and (5) an inhibitor, e.g. quinone or hydroquinone. Specification 531,273, [Group IV], is referred to.
Patent GB-1023852-A (GB)
Title: Improvements in or relating to harrows
IPC: A01B19/02
Filed: 1962-11-30
Abstract: 1,023,852. Agricultural harrows. C. VAN DER LELY N.V. Nov. 30, 1962 [Jan. 4, 1962], No. 4776/65. Divided out of 1,023,851. Heading A1B. A harrow comprises a frame movable over the ground and resilient tines 3 connected to supports 1 carried by the frame solely by entering connecting portions 4 of the tines through holes 2B formed in the supports, the tines being formed in integral pairs from single lengths of spring steel wire or rod.
Patent GB-1034913-A (GB)
Title: Apparatus adapted for intermittent predetermined motion
Inventor: SALMOND CHARLES MILLAR
IPC: F16H27/04
Filed: 1964-02-05
Abstract: 1,034,913. Escapement mechanisms. ANDREW YOUNG & SON (ENGINEERS) Ltd., and J. & R. SNODGRASS Ltd. Feb. 3, 1965 [Feb. 5, 1964], No. 4803/64. Heading F2X. [Also in Division B8] Apparatus for providing intermittent predetermined motion includes a platform member 10 with drive means, such as a weight 17, and braking means 22, 23 released periodically by energization of a solenoid 26. The braking means consists of a pair of pivoted and spring-loaded pawls successively engaging pins spaced around the circumference of the platform. The platform may carry a series of plastic containers to receive flow samples. The solenoid is energized from the mains through a time-operated switch and the driving weight 17 may be suspended in a dashpot.
Patent GB-826954-A (GB)
Title: Improvements in or relating to electric discharge lamps
Inventor: TAYLOR PETER WILLIAM
IPC: H01J61/34
Filed: 1956-02-17
Abstract: 826,954. Discharge lamps. GENERAL ELECTRIC CO. Ltd. Feb. 18, 1957 [Feb. 17, 1956], No. 5014/56. Class 39(1). A discharge lamp, particularly of the sodium vapour-rare gas type, comprising a U-shaped envelope 1 mounted within a cylindrical single or double-walled outer jacket 5 with each limb 2 of the envelope individually surrounded by a sleeve 16 of transparent heat-insulating material as described in Specification 801,482, is provided with a device 17 which fits between the limbs 2 at the curved end of the envelope and has two pairs of resilient spring members 21 engaging the limbs 2 and the ends of the sleeves to urge the sleeves towards each other. The device 17 can hold the ends of the sleeves in contact with each other or against a member located between them. The device 17 can be made of nickel or spring steel and provided with one or more resilient triangular members 20 bearing against the ends of the sleeves, the other ends of the sleeves bearing against a mica disc 23 so that the sleeves are held against longitudinal displacement. Each sleeve 16 is also supported from the limb 2 on which it is fitted by a spring clip 24 of steel strip or wire in the form of a wave. In a modification the spring members 21 may be so shaped and arranged as to bear against outwardly facing parts of the outer surfaces of the sleeves. The envelope is filled with neon containing 0À5% by volume of argon at a total pressure of 10 mms. together with about 1 gram of sodium. The inner parts of limbs 2 near the U-shape bend can be flattened. The envelope 1 is supported within the jacket 5 by the mica disc 23 and a device 13 having two opposed spring fingers 14, which clip over the end of the envelope, and two members 15 which extend into contact with the outer jacket as described in Specification 815,782. A starting wire 22 surrounds each sleeve, the wires being connected at one end to a different pair of electrode leads 4'and at the other end to a mica tag carried by the device 13. The space between the envelope 1 and the jacket 5 is evacuated and is provided with a getter element mounted on a support wire 26. Specification 816,043 also is referred to.