baber/WOPTO huggingface dataset:
Patent GB-996939-A (GB)
Title: Improvements in or relating to friction clutches
IPC: F16D13/70
Filed: 1964-02-07
Abstract: 996,939. Friction clutches. FICHTEL & SACHS A.G. Feb. 7, 1964 [July 10, 1963], No. 5329/64. Heading F2C. A friction clutch has a thrust ring 64 mounted on the radially inner ends of clutch release levers 42 which is engaged by a clutch throwout bearing 88 to disengage the clutch. The clutch has a friction disc 24 clamped between a disc 10 and pressure plate 32 by springs 34 which react against a member 36 mounted on a base-plate 30. The levers 42 fulcrum about angle-brackets 48 which are fixed to the baseplate, the outer ends of the levers co-operating with pins 50 which are pivotally mounted at 54 on the pressure plate 32 to disengage the clutch when the throw-out bearing shifts the thrust ring 64 leftwards. The radially outer ends 62 of the release levers 42 are slotted and co-operate with projections 52 of the pressure plate 32 for guidance. The thrust ring 64 comprises sheet metal discs 66, 68 which are welded together, the disc 66 being formed with ribs 70 which engage in guide slots 72 formed in the release levers 42. The disc 68 is engaged by the throwout bearing which has a graphite ring 96 or is formed with a member mounted in a ball bearing. Vee springs 78 are fixed to the baseplate and engage the thrust ring 64 at 80 to hold it against the levers 42.
Patent GB-781896-A (GB)
Title: Improvements relating to spring suspensions for vehicle chassis, machinery and the like
IPC: B60G17/052
Filed: 1956-02-21
Abstract: 781,896. Springs; road vehicle spring suspensions. SOC. APPLICAZIONI GOMMA ANTIVIBRANTI S.A.G.A. SOC. PER AZIONI. Feb. 21, 1956 [Feb. 22. 1955], No. 5335/56. Classes 108(2) and 108(3) A spring suspension comprises a rubber or metal compression spring 5 in combination with a pneumatic cushioning device having in association with it in the suspension, means for increasing or decreasing the pneumatic pressure as the load on the suspension increases and decreases respectively. As shown, the pneumatic cushioning device comprises a container 14 disposed within the spring 5 and connected to a pressure adjusting device 9. The latter is arranged to adjust the pressure automatically, according to the change in vehicle load or the change in the height 10 of the chassis above the ground. The spring 5 may comprise a rubber annulus having an embedded coil spring. Alternatively, the rubber annulus may be formed by a pile of rubber discs separated by metal rings. In a modification of the last construction, the rubber discs and metal rings may be of continuous helical configuration. In yet a further modification, the spring 5 comprises merely a coil spring surrounding the container 14. Specification 734,549 is referred to.
Patent GB-1506663-A (GB)
Title: Technique applicable to table amusements board games etc
IPC: A63F9/00
Filed: 1977-02-08
Abstract: 1506663 Maze D R WALKER 8 Feb 1977 [11 Feb 1976] 05359/76 Heading A6H An apparatus for producing maze configurations, comprises a board carrying a number of concentric squares with each pair of adjacent walls being spaced by the same distance, the squares being made up of centrally pivoted wall-sections each of length twice that of the said distance.
Patent GB-1375291-A (GB)
IPC: C09C1/00
Filed: 1972-02-04
Abstract: 1375291 Acidic coated TiO 2  COMMONWEALTH SCIENTIFIC & INDUSTRIAL RESEARCH ORGANISATION 4 Feb 1972 [10 Feb 1971 (4)] 5399/72 Heading C1N [Also in Division C3] TiO 2  is coated with an Al compound and then treated with an acidic substance to provide acid sites on the surface. The TiO 2  may be coated with Al 2 O 3  from Al 2 (SO 4 ) 3  and NH 4 OH, or with Al silicate from Na aluminate and Na silicate. The coated TiO 2  may then be slurried at pH 3-5, e.g. using H 2 SO 4 , AlK(SO 4 ) 2 , or HAc, and then heated at 100-800‹ C. The product may further be treated with an organic substance, e.g. tallowamine, octylamine, decylamine, hexanol, or heptanol, or with a polymer which is formed in situ, e.g. from styrene, divinylbenzene + styrene, or isoprene, and ozonized. Other treating materials are listed. The TiO 2  may be treated in a mixer or fluidized bed or as a non-aqueous slurry, with solid, liquid or gaseous materials.
Patent GB-697305-A (GB)
Title: Improvements relating to direct current electric transmission systems employing valve converters
Inventor: BUSEMANN FELIX
IPC: H02M7/51
Filed: 1951-03-06
Abstract: 697,305. Converting. BRITISH ELECTRICAL & ALLIED INDUSTRIES RESEARCH ASSOCIATION. Feb. 28, 1952 [March 6, 1951], No. 5421/51. Class 38 (ii). An inverting arrangement which may comprise mercury vapour converters 1-6 connected in double three-phase bridge arrangement in conjunction with a similar arrangement (not shown) on the other side of the earthed centre point 22 of the D.C. line, is protected by suitable action or a warning is given when the direct current input and the alternating current output differ substantially in value. A direct voltage proportional to the D.C. is developed across resistance 33 from a magnetic amplifier 30 with associated rectifier 32 and is balanced against a voltage proportional to the A.C. developed across resistance 37 from current transformers 34 and rectifiers 36. If as a result of commutation failure the D.C. increases over the A.C., the voltage across resistance 33 exceeds that across resistance 37 and current flows through rectifier 39 to operate relay 40 and unit 42 connected to the main grid control unit 24 whereby the phase angle is advanced and the fault corrected. Upon backfire of a valve, the A.C. predominates and current flows through rectifier 43 to operate relay 44 whereby unit 46 connected to main control unit 24 acts to interrupt the grid impulses while converter 50 is fired to relieve the faulty converter of its load. When normal running is re-established the relay which operated is de-energized and operation continues. In one modification a relay contact is moved to one position or the other according as current derived from a shunt in the D.C. line is greater or less than current derived from the current transformers on the A.C. side, Fig. 2 (not shown). In another modification the predominance of the voltages across resistances 33, 37 respectively fire triodes 60 and 61 to operate the protective devices 42, 46, Fig. 3. According to the Provisional Specification, the comparison may be of torques derived from the direct and alternating currents.
Patent GB-927885-A (GB)
Title: Improvements in and relating to transformer loop-windings
IPC: H01F27/34
Filed: 1961-02-14
Abstract: 927,885. Transformers. WILLEM SMIT & CO'S TRANSFORMATORENFABRIEK N.V. Feb. 14, 1961 [March 4, 1960], No. 5428/61. Class 38 (2). The invention relates to a transformer loopwinding, that is a winding consisting of disc coils in which there is a current path through the winding which after passing through one coil returns to a preceding coil before continuing to a succeeding coil, thus forming a loop in the winding between the first two coils. According to the invention a loop winding has disc coils A, B, C, D, E alternately wound in opposite directions with interwound conductors and at least one group of three consecutive disc coils arranged with a loop between the first and second and another loop between the second and third of the three coils. There may be more than one loop between coils, and there may be more than one current path through the winding (Figs. 3 to 7, not shown). With this arrangement the capacitance of the winding is increased.
Patent GB-105269-A (GB)
Title: Improvements in and relating to Wrapping Machines.
IPC: B65B11/44
Filed: 1916-04-14
Abstract: 105,269. Marks, E. C. R., (Package Machinery Co.). April 14, 1916. Packeting by wrapping-up.-In wrapping- machines of the kind in which an article and a wrapper are fed into a pocket in a rotary wrapping-wheel so that the wrapper is folded into the form of a tube and the ends twisted, the wrapper w, interposed between the article and the wrapping-wheel 3, is gripped between pivoted spring- pressed cam-actuated fingers 30 and wings 27, 28 which extend laterally from the plunger 7 on both des of the article. The fingers and the wings move with the article and the wrapper as they are fed forwards by the plunger into the pocket of the wrapping-wheel, and grip the wrapper until after the initial folding produced by feeding the wrapper into the wrapping-pocket has been completed. The article is prevented from falling during the feeding, by a sliding plate 14 which is forced by a spring 20 to follow the plunger 7 for a part of its forward movement. During the backward movement of the plunger, it directly engages and moves the plate 14.
Patent GB-855989-A (GB)
Title: Improvements relating to electron-optical devices
IPC: H01J31/50
Filed: 1959-02-18
Abstract: 855,989. Cathode-ray tubes. OPTISCHE INDUSTRIE DE OUDE DELFT N.V. Feb. 18, 1959 [Feb. 18, 1958], No. 5592/59. Class 39(1). An electron-optical device comprises a tube in which a spherical electron-emitting photocathode 6 is imaged on a screen 8 by means of an electric field, e.g. from electrodes 10-13, whose equipotential surfaces in the space between the cathode and anode are substantially shaped as parts of spheres concentric with the cathode and further comprises means for superposing on the electric field 14 a magnetic field whose field lines 15 in the space between the cathode and anode are substantially perpendicular to the electric equipotential surfaces, whereby focusing is obtained on the screen 8 which is placed on the same side of the centre of curvature of the photo cathode as the photo cathode itself. The magnetic field may be generated by a solenoid 16 shaped as shown for a frusto-conical tube or by a plurality of annular permanent magnets.
Patent GB-1056134-A (GB)
Title: Pressure reducing valve for gases issuing from a container for liquid gas
IPC: F16K31/126
Filed: 1964-02-11
Abstract: 1,056,134. Valves. GURTNER S.A. Feb. 11, 1964 [July 12, 1963], No. 5611/64. Heading F2V. A pressure reducing valve, Figs. 1, 2, 3 and 4 (not shown), more particularly for gases issuing from a container for liquid gas, comprises a body 1, 2, 3, an outlet 35 and a socket 7 adaptable to a connecting mouthpiece 47 (not shown in Fig. 2) connected to the source of gas and provided with a valve 48, the closure member 49 of which is permanently urged in the direction of closure, a first expansion chamber 6 comprising a passage 11 which opens into the socket 7 and into which a push-rod 21 fits with sufficient play for the passage of gas, the pushrod 21 being fixed at one end to a first flexible membrane 5 which closes the chamber 6, the length of the push-rod 21 being sufficient to enable it to lift the closure 49 from its seat when subjected to a predetermined axial thrust by the spring 25, a second expansion chamber 34, communicating with the chamber 6 through a duct 32, having a pivoted valve 40 at its outlet, the valve 40 comprising a lever 38 with a central fulcrum 39, one of the arms of the lever 38 supporting the closure member and the other arm of the lever being connected, with some lostmotion, to a second flexible membrane 36 closing the chamber 34, so that when the chamber 34 is at a predetermined pressure, adjusted by the screw 46 which alters the rate of a spring 43, the valve 40 tends to close, an operating lever 26 controls the opening and closing of the valve 49 and is mounted to rotate about the axis of the push-rod 21 and cooperates with an axially slidable supporting member 15 by means of at least one peg 28 engaging with a sloping surface 17 or 18 on the member 15, the spring 25 interposed between the supporting member 15 and the membrane forces the push-rod to open the valve 49 when the lever 26 is rotated to the extreme position shown chain-dotted in Fig. 4, and allows it to be closed by the spring 50, aided by the pushrod return spring 30, when the lever 26 is rotated to the opposite extreme position shown by full lines in Fig. 4. The valve also includes a locking ring 54 which co-operates with balls 9 in the socket 7 to retain the valve in connection with the mouthpiece 47. A spring-loaded pin 61 is also moved axially by a sloping surface 58 in the ring 54, as it is rotated, into an aperture 65 of the lever 26 to lock it in the valve closed position, and the arrangement is such that the mouthpiece 47 can only be inserted into the socket 7 in this valve closed position.
Patent GB-1411055-A (GB)
Title: Drying frame for items of laundry which can be folded and  unfolded in the manner of an umbrella frame
IPC: D06F57/04
Filed: 1973-02-05
Abstract: 1411055 Clothes dryer LEIFHEIT INTERNATIONAL GUNTER LEIFHEIT GmbH 5 Feb 1973 [5 Feb 1972] 5651/73 Heading A4U A clothes dryer comprises line-carrying arms 11 pivotally carried by and extending radially from a ring 14 slidably mounted on a post 10 and provided with a catch 19 for releasably engaging the post to prevent movement of the ring, the catch including an actuating member 27 connected to a clamp 22 by a spring 31 whereby movement of the member 27 from the release position shown in Fig. 3 to the engaged position, Fig. 4 (not shown), moves the spring past a dead centre position to bias the clamp 22 into its post-engaging position. The arms 11 are pivotally connected by struts 15 to an upper ring 17 having a screw 18 for adjustably retaining it in position on the post 10. A cord 20 for moving the ring 14 along the post 10 extends from the ring 14 round a roller on the ring 17 and then round a roller on the ring 14. The clamp 22 is the shape of a segment of a circle the distance from its clamping face 24 to its pivot 23 progressively increasing from an upper edge 25 to a lower edge so that when the member 27 is moved to its engaged position downward movement of the ring 14 will cause the clamp to be moved under the bias of the spring 31 to its clamping position. The catch 19 may be mounted in a member 37 separably secured within a housing 29. The clamp has a replaceable lining 41 of material such as rubber for engaging the post. The arms 11 when in their folded position are retained in members 16 on the upper ring 17 by cams 55. The struts 15 are pivoted on the arms 11 by members 56 each comprising two parts engaging either side of the arm 11 and riveted together, Figs. 8 and 9 (not shown). In a second embodiment, Fig. 6 (not shown), the catch comprises a rectangular clamp supported by inclined rocking pins so that downward movement of the ring increases the clamping force. The spring is moved past a dead centre position by a sliding member. The latter may be replaced by a rocking member. In a third embodiment, Fig. 7 (not shown), the catch comprises a wedge-shaped clamp backed by a complementary wedge-shaped member. The tension spring may be replaced by a compression spring and the clamp may be replaced by a pawl. The upper ring may have a catch similar to the catch 19. The arms 11 may be fitted on an upper ring and the struts 15 on a lower ring.
Patent GB-973345-A (GB)
Title: Forged valve housing and method and apparatus for producing the same
IPC: G01C5/06
Filed: 1961-02-15
Abstract: 973,345. Valves. PERSTA G.m.b.H., [trading as STAHL-ARMATUREN SIEPMANN G.m.b.H. KOMM. GES.]. Feb. 15, 1961 [Feb. 20, 1960], No. 5653/61. Heading F2V. [Also in Division B3] A valve housing consists of a one-piece forging, Fig. 5, with curved inlet and outlet passages 5, 7 whose mouths are coaxial with the longitudinal axis of the housing. The flanges 6 may be omitted.
Patent GB-311843-A (GB)
Title: Improvements in or relating to apparatus for the volumetric measurement of granular,powdered and like materials
IPC: G01F23/00
Filed: 1928-02-23
Abstract: 311,843. Lea, J. E. Feb. 23, 1928. Feeding devices for granular and like materials. -In apparatus for the automatic measurement and delivery of granular and like materials, mechanism is provided for controlling the delivery or rate of delivery of the material and means operated by an accumulation of the delivered material is connected to the mechanism to control automatically the delivery or rate of delivery in proporton to the demand. The conveyer a, Fig. 2, of a measuring apparatus delivers the material into a hopper b in which is a tilting flap c adapted to be moved by the weight of the material to control the speed of the motor driving the conveyer a. The material may pass through a crusher f<1> and the hopper b may supply fuel to pulverizers f. The height of the material in the hopper b, Fig. 4, is regulated by a trampler h connected to a bellcrank k which is adapted to move a slide m in the hopper supplying the material to the conveyer a when a cam k' on the bell-crank is struck by a cam n driven by the conveyer shaft. When the cam k<1> is struck the trampler h rises above the surface of the material in the hopper b and the slide m closes, and when the. trampler descends the slide opens. This operation is repeated until the descent of the trampler h is restricted by the height of material in the hopper so that the slide m is only partly opened or closed and the flow of material is restricted or stopped. In a further modification two tramplers are connected to two levers which are supported on a cross-shaft, the levers being adapted to be raised alternately by a double-throw crank mounted on one end of a pivoted beam, the other end of which supports a feed-gate. The cranks are driven from the conveyer by a chain and sprocket and the height to which the tramplers rise in the hopper effect the control of the opening of the feed-gate. Specification 205,903, [Class 106 (iv), Indicating &c.], is referred to.
Patent GB-643547-A (GB)
Title: Method of forming rims
IPC: B21D53/30
Filed: 1948-02-25
Abstract: 643,547. Vehicle wheels. KELSEY-HAYES WHEEL CO. Feb. 25, 1948, No. 5687. Convention date, April 21, 1947. [Class 144 (ii)] [Also in Group XXII] In a wheel of the detachable flange type, an annular series of depressions 13 is formed in the detachable flange 2, to form projections against which the locking ring 3 may abut.
Patent GB-234426-A (GB)
Title: An improved means for preventing dazzle for head lamps
IPC: B60Q1/124
Filed: 1925-03-02
Abstract: 234,426. Pickersgill, W. J. March 2, 1925. Lantern obturators.-An anti-dazzle device for vehicle lamps comprises a shield 2 normally located alongside the lamp 1 and adapted to be swung into any desired position in front of the lamp, the shield preferably being of arcuate section with its concave face towards the lamp. The lamp bracket carries a collar 4 having an extension 5 for supporting the shield 2, and an extension 6 to which a pull-rod 7, Bowden-wire, or other control device is connected, and the collar 4 of each lamp may also carry an arm. 9 to which a rod 10 is pivotally connected to enable the two shades to be moved in unison. Preferably the shields are opaque with their inner faces coated with a reflecting substance, or they may be translucent and coloured, and each may have a small central aperture, which may be fitted with a lens or adjustable diaphragm.
Patent GB-566350-A (GB)
Title: An improved process for the extraction of gelatine from waste chrome leather
IPC: C09H3/00
Filed: 1943-04-12
Abstract: Gelatine is extracted from waste chrome leather, whether dyed or undyed, bleached or unbleached, by treating it, preferably after reducing it to small pieces, with an aqueous solution of crystalline disodium phosphate and ammonia at a temperature of about 80 DEG  C. until <\>ga solution of the desired concentration is obtained.  The gelatine solution is filtered from the residue which, if desired, may be further treated by adding more water and reheating, but the extraction is discontinued before 60 per cent of the gelatine has been obtained to avoid disintegration of the leather into small particles which cannot be separated by filtration.  The solution employed contains 15-20 per cent of the weight of dry leather of disodium phosphate and 10 per cent of .880 ammonia, the concentration depending on the desired concentration of the gelatine solution.  The residue can be treated for the recovery of chromium oxide.
Patent GB-677242-A (GB)
Title: Improvements in or relating to methods of preparing a smooth glass surface for cementing a member thereto
IPC: H01J5/58
Filed: 1949-03-03
Abstract: 677,242. Discharge apparatus. PHILIPS ELECTRICAL, Ltd. March 3, 1949 [March 6, 1948], No. 5835/49. Class 39 (i). [Also in Group XI] A member, e.g. a cap 6, is cemented on a wall, which must not be deformed, e.g. part of the glass envelope 1 of a valve, by coating it with a mixture 9 of a low-melting point glaze and a higher-melting point powder e.g. powdered glass, and heating so that only the glaze melts, the powder forming a roughened surface on which the cement 8 is applied. The base of a lamp or valve can be applied similarly. A suitable composition of the glaze and glass mixture is given.
Patent GB-590839-A (GB)
Title: Improvements relating to detergent preparations
IPC: C11D3/22
Filed: 1945-03-09
Abstract: A soapless detergent preparation, e.g., a shampoo, in the form of a cream or paste comprises a soapless detergent in an aqueous dispersion of a hydrophilic colloid and a relatively small proportion of one or more neutral salts which, by a gelling action, render substantially non-liquid, the otherwise fluid composition.  The colloid may be a water-soluble gum or a water-dispersible cellulose derivative, e.g., a sodium salt of cellulose glycollic acid, or gum tragacanth or gum karaya.  The salt may be sodium, potassium, or ammonium chloride, sulphate, nitrate, or acetate.  The soapless detergent may be a salt of a sulphuric ester of a fatty alcohol having at least 10 carbon atoms such as lauryl alcohol.  In an example a solution of 1 part of karaya gum and 60 parts of a salt of a sulphuric ester of a fatty alcohol in 160 parts of water is converted into a firm gel or paste by adding 4 parts of common salt. In another example, to 75 parts of a 4 per cent. dispersion of the sodium salt of cellulose glycollic acid, there is added 40 parts of the sodium salt of a sulphuric ester of lauryl alcohol at 40-45 DEG C.  To this solution, 25 parts of a 25 per cent. solution of sodium chloride are added. The mixture sets to an even firm paste on cooling to normal temperature.ALSO:A firm cream or paste suitable for use as a detergent preparation comprises a soapless detergent in an aqueous p  dispersion of a hydrophilic colloid such as a water-soluble cellulose ether, and a relatively small proportion of one or more neutral salts which by a gelling action render substantially non-liquid, the otherwise fluid composition.  The soapless detergent may be a salt of a sulphuric ester of a fatty alcohol having at least 10 carbon atoms such as lauryl alcohol.  The salt may be sodium, potassium, or ammonium chloride, sulphate, nitrate, or acetate.  The cellulose ether may be a sodium salt of cellulose glycollic acid.  In an example, a solution is prepared by mixing at 40-45 DEG  C. 75 parts of a 4 per cent dispersion of sodium cellulose glycollate with 40 parts of the sodium salt of a sulphuric ester of lauryl alcohol. To this solution there is added 25 parts of a 25 per cent solution of sodium chloride.  The mixture sets to an even firm paste on cooling to normal temperature.
Patent GB-885472-A (GB)
Title: Machine for wrapping textile articles
IPC: B65B25/20
Filed: 1959-02-20
Abstract: 885,472. Feeding webs. NURTINGEN WIRKWARENFABRlK G.m.b.H. Feb. 20, 1959 [Feb. 20, 1958], No. 5992/59. Class 100(1) [Also in Group XVII] In a machine for sealing textile articles 63 between webs of plastic foil 26, 29 (see Group XVII), unwound from separate rolls 25, 28, respectively, the edges of the webs are gripped between opposed bands 32, 39, 48, that feed the sheets through the machine. The bands are of steel or of a material having a rigidity similar to steel, for example, a hard synthetic resin, and are perforated or provided with recesses on the side facing the webs of foil. The foil bulges into these recesses and this tends to keep the foil taut in a lateral direction. Sprocket wheels may interact with the perforations or recesses.