baber/WOPTO huggingface dataset:
Patent GB-1349273-A (GB)
Title: Sweeping machine
IPC: E01H1/08
Filed: 1971-04-19
Abstract: 1349273 Road sweeping machines H STRAUB 19 April 1971 [16 March 1970] 24169/71 Heading E1E A sweeping machine comprises two vertically movable sweeper units 9, 10 the second unit 10 being laterally movable. Each unit comprises a housing containing a brush and connected by hoses 18, 15 to a low pressure debris collection chamber having an evacuating blower. The housings are pivoted to arms 8, 11 which are raisable by hydraulic cylinders 46. Arm 11 comprises parallel laterally spaced arms 11a, 11b and is pivoted to a lever 13, so that pivoting of lever 13 by hydraulic cylinder 14 causes lateral movement of housing 10 but no change in its orientation. A spring between housing 10 and arm 11 returns the housing after deflection by an obstacle. The sweeper housings contain the brushes at the front and have a rear skirt (28). The housing outlets contain pulverising wheels (Fig. 4a, not shown) and a plurality of brushes may be obliquely arranged in front of the housing (Fig. 7, not shown).
Patent GB-1070763-A (GB)
Title: Apparatus for homogenizing glass
IPC: C03B5/187
Filed: 1965-06-08
Abstract: <PICT:1070763/C1/1> <PICT:1070763/C1/2> To homogenize molten glass, the glass from a furnace 12 is passed downwardly through a downwardly tapered vessel 16 while stirring the glass by a stirrer 18 and then stopping rotation of the glass by passing it into a horizontal duct 20 and an upwardly inclined duct 22 to a discharge spout 14.  The platinum lined vessel 16 has an upper extension 16a to direct the flow of the glass and the vessel 16 and ducts 20, 22 are surrounded by heating devices 25 to maintain the temperature of the glass for delivery from the spout 14.  The blades 26 of the stirrer 18 are of such length as to lie closely adjacent the tapered walls of the vessel 16 and are hydrodynamically shaped to counteract the effect of the slower velocity of their root portions 28, the blades being widest and steepest in inclination at their roots 28 and narrowest and flattest at their tips 30.  Preferably they also taper in thickness.
Patent GB-660457-A (GB)
Title: Improvements in coordinate switches for automatic telephone systems
IPC: H01H67/26
Filed: 1948-09-16
Abstract: 660,457. Automatic exchange switches. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Sept. 16, 1948 [Sept. 19, 1947], No. 24350/48. Class 40 (iv). In a cross-bar switch of the type in which each longitudinally-movable operating bar 14 has an associated clutch magnet 22, Figs. 1, 2, adapted to couple it to the armature 29 of a common operating magnet 21, each operating bar 14 after being actuated by the operating magnet 21 is mechanically latched in the actuated position by a sprung stop 25 so long as the associated clutch magnet 22 remains energized. The operating magnet 21 may be released and is available to actuate a further operating bar. The Specification as open to inspection under Sect. 91 comprises also a cross-bar switch in which each selecting magnet corresponds to an incoming line and each operating magnet to an outgoing trunk. The number of selecting magnets is greater than the number of more powerful operating magnets, one of which remains energized for the duration of a connection whereas a selecting magnet is energized for only a short time. In Figs. 2 (Cancelled), 3 (Cancelled), a selecting magnet (not shown) pulls a selecting bar 9 attached by springs 8 to driving members 6 which are thereby coupled to operating bars 14, one of which is then pulled by an operating magnet (not shown) to close a group of contacts 2, 5. This subject-matter does not appear in the Specification as accepted.
Patent GB-501980-A (GB)
Title: Improvements in or relating to the manufacture of golf, hockey or like balls
IPC: A63B37/00
Filed: 1937-09-08
Abstract: 501,980. Balls for games. MILLER, E. Sept. 8, 1937, No. 24517. [Class 132 (ii)] A golf, hockey, or like ball has a core a consisting of a mixture of granulated cork,preferably paraffin wax treated, rubber and kauri resin, the mixture being heated to fuse the kauri resin which acts as a binder. The core a is surrounded by a layer of rubber b which is surrounded by a layer c prepared by heating a mixture of rubber and kauri resin to about 130‹ C., adding granulated pure nickel, stirring and moulding. The layer c is surrounded by a similar layer d but containing more nickel, and the layer d is wound with rubber thread or tape e and provided with a cover f. Dimensions and weights of the core and layers are given.
Patent GB-776923-A (GB)
Title: Travelling wave electron discharge devices
IPC: C08G81/02
Filed: 1953-09-04
Abstract: 776,923. Travelling-wave tubes. STANDARD TELEPHONES & CABLES, Ltd. Sept. 4, 1953 [Sept. 29, 1952], No. 24540/53. Class 39(1). [Also in Group XL(b)] In a travelling-wave tube, the helical line is coupled to a coaxial line of lower impedance by a transition section of the line-above-a plane type-whose length is adjusted to be resonant at the operating frequency, the section being disposed transversely of the axis of the helix with one end shorted, a high voltage point coupled to the helix, and the low impedance line coupled to the transition section at a point between the shorted end and the high voltage point to match the low impedance line. In one embodiment input and output transition sections 12, 13, Fig. 1, consist of line conductor 17 of length equal to one or more half wavelengths both ends of which are shorted to plane plate 4 thus establishing a voltage maximum at the centre of 17 to which the helix 9 is attached. The input terminal 10 is a 50- ohm co-axial line the outer conductor being connected to plate 4 whilst the inner conductor 25 is connected to 17 at 26, energy being propagated along 17 in the T.E.M. mode. Plate 4 carries the electron gun and is mounted within cylinder 5 whilst plate 7 is similarly mounted and carries an insulated electron collector 21. The 300-ohm helix is supported by dielectric rods 14, 15, 16, Fig. 2, which are supported at their ends in aperture 19 in the transition section. In another embodiment the strip 17 is replaced by a wire of similar length of round or other cross section and slightly offset from the centre so that the electron beam passes to one side of the wire. In another embodiment quarter-wavelength conductor 29, Fig 5, replaces conductor 17 and is connected to plate 4b at the upper end only, additional support being provided by quarter-wavelength arms 31 and 32 which are also connected to 4b at their ends ; the helix is connected at the centre and the co-axial line 10b positioned as before. Alternatively conductor 17 may be replaced by rigid strip 33, Fig. 8 (not shown) of length <#>/4 and supported at its outer end only, the helix being connected to its inner end. Specification 706,958 is referred to.
Patent GB-462179-A (GB)
Title: Improvements in or relating to seats and seat backs or cushion devices for use therewith
IPC: A47C7/46
Filed: 1935-09-03
Abstract: 462,179. Securing cushions in position. CORBER, F. H., and WARDMAN, C. B. Sept. 3, 1935, No. 24541. [Class 52 (iv)] A cushion device for application to a seat back comprises a sheet of flexible material 4 having a pocket 5 formed at its upper end to engage the top of the seat back, and a pneumatic cushion 7 attached to the sheet 4 to support the back of the user. The cushion 7 may be inserted at the ends in pockets 6 on the sheet 4. The sheet 4 may be of such length as to cover the seat, and a further air-cushion may be provided on the extended part to support the thighs ; it may be a single sheet or may be double and padded with flock, sponge rubber, &c., or it may be itself inflatable.
Patent GB-262214-A (GB)
Title: Improvements in or relating to woven driving, conveyor and like belts
IPC: D03D3/00
Filed: 1925-10-03
Abstract: 262,214. Taylor, E., and Taylor & Co. (Waterfoot), Ltd., J. Oct. 3, 1925. Multiple fabrics; pile fabrics.-A woven driving conveyer or like belt has one or more inner layers or plies comprising wefts 4 and warps 5 woven twill, and outer layers woven plain from wefts 2 and warps 3. Binding-warps 6 are used as shown. One of the outer layers may have a loop pile formed from some of the ordinary warp threads, or from special warp threads to form a driving-surface, or both outer layers may have a loop pile, so that the belt is reversible. It is stated that the belt withstands the pull of the ordinary wire fasteners used for connecting its ends.
Patent GB-1081618-A (GB)
Title: Improvements in or relating to fuel-control devices for gas turbines
Inventor: WHITEHEAD JOHN PARKIN
IPC: F02C9/16
Filed: 1963-06-21
Abstract: 1,081,618. Gas turbine plant. PLESSEYUK Ltd. June 10, 1964 [June 21, 1963], No. 24735/63. Heading FIG. The liquid fuel supply to the combustion chamber of a gas turbine engine having an engine driven compressor for the combustion air is arranged so that the quantity of fuel delivered per revolution of the engine is proportional to the pressure of the combustion air at a low pressure point until the ratio of the pressure of the combustion air at a higher pressure point to the pressure at the low pressure point reaches a predetermined value, and is proportional at the same rate to the value of the pressure at the higher pressure point divided by this predetermined value of the pressure ratio when the pressure ratio exceeds this value. Fuel is delivered by a gear pump 2 at a rate proportional to engine speed through port 4 to the interior of slide valve 5. Equal area outlet ports 6, 7 in slide 5 co-operate with control edges of fixed ports 8, 9 such that an increase in fuel flowing to the engine burners through line 10 is accompanied by a corresponding decrease in fuel returned to pump 2 through lines 11, 11A. The pressure drop across port 6 is maintained equal to that across port 7 by link valve 13. Valve slide 5 and link valve 13 are rotated by shaft 38 to reduce friction. Compressor inlet pressure P 1 , communicates freely with chamber 18 through line 21 below a certain preset value r, of the pressure ratio P2/P1. Bellows 17 abutting valve slide 5 communicates with chamber 18 through openings 19 and the opposing bellows 16 is evacuated such that the position of slide 5 and the fuel flow to the engine burners per revolution of the engine is directly proportional to the pressure in chamber 18, i.e. P1 below ratio r. Compressor outlet pressure P2 from line 29 communicates with the interior of bellows 27, opposed by evacuated bellows 28 such that when P2 rises to a value giving a pressure ratio equal to r, valve 22 on beam 23 closes under the action of beam 30 pivoted at 31 to cut off compressor inlet pressure PI from chamber 18. Line 29 also communicates with chamber 18 through restriction 34 such that above a pressure ratio of r the pressure in chamber 18 has a value of P2/r.  At pressure ratios greater than r, therefore, fuel supply to the burners per revolution of the engine is directly proportional, at the same rate as before, to the compressor outlet pressure P 2  divided by r. Screws 32, 37 enable the setting of r to be altered.
Patent GB-418701-A (GB)
Title: Improvements in baby carriages
IPC: B62B7/02
Filed: 1933-09-07
Abstract: 418,701. Folding baby-carriages. SIMPSON, B., and MURDOCH, H. B., Star Works, Cubitt Town, London. Sept. 7, 1933, No. 24797. [Class 108 (i).] - A folding two-wheeled babycarriage comprises a U-frame one end of which forms the handle and the other ends the supporting legs, an auxiliary frame pivoted to the U-frame and supporting the wheels and a carrier suspended from the U-frame so that in use the weight is supported vertically over the wheels. The main frame comprises a U-shaped frame a the legs of which form the supports while the two wheels b are carried by an auxiliary frame d pivoted at e to the main frame a. A seat frame is provided comprising a seat l, pivoted to the main frame and supported by stops l<1>on the auxiliary frame d, and a seat back m supported by a stirrup m<1> pivoted to the main frame. The wheels are held in their operative position by links f engaging by means of notches g, studs h on the auxiliary frame d, a transverse locking bar i being engaged by a spring clip k carried by the wheel axle. Fig. 4 shows another form of seat, a hood being shown in dotted lines.
Patent GB-997583-A (GB)
Title: Production of foamed thermoplastic articles
Inventor: LIGHTNER GENE E
IPC: B29C44/28
Filed: 1961-07-10
Abstract: Foamed thermoplastic articles, e.g. sheets, are made by forming a dry, friable, foraminous mass of desired shape from particles of one or more thermoplastic materials, with average particle size less than 100 microns and a glass transition temperature of at least 50 DEG C., applying to the shaped mass a vaporizable foaming agent, and heating the mass to expand the particles and cause them to adhere to one another.  The foaming agent is an organic compound boiling at -10 DEG  to 80 DEG  C. at atmospheric pressure, and with not more than a slight solvent action on the thermoplastic material, or is a mixture of 70-98% by weight of one or more such compounds with 30-2% of an organic solvent for the thermoplastic.  Suitable thermoplastic materials are ethyl cellulose, cellulose acetate, cellulose acetatebutyrate; homopolymers and interpolymers of substances such as vinyl chloride, vinyl bromide, vinylidene chloride, ethylene, propylene, isobutylene, vinyl acetate, vinyl propionate, vinyl <PICT:0997583/C3/1> <PICT:0997583/C3/2> benzoate, vinyl methyl ether, vinyl isobutyl ether, acrylic or methacrylic acid or ester, acrylamide, acrylonitrile, styrene, vinyl toluene, ethyl styrene, dimethyl styrene, chlorostyrene, dichlorostyrene, vinyl naphthalene, maleic anhydride, diethyl maleate and dibutyl fumarate. Blends, e.g. of polystyrene with rubbery diene polymers, or graft copolymers, e.g. of styrene with a rubbery diene polymer may be used.  Suitable vaporizable foaming agents are listed.  The dry, friable shaped mass is preferably prepared by a layer of latex of thermoplastic material by removal of water at temperatures below the fusion point of the thermoplastic polymer, or by coagulating a film of latex on to the surface of a mould dipped therein.  Examples describe the formation of foamed polystyrene sheets either unsupported or bonded to backing sheets, e.g. of paper. Foaming agents employed are: pentane and a pentane-acetone mixture.  Fig. 1 illustrates apparatus in which a sheet of paper 20 is coated on one side in the nip of rollers 21, 22 with a film 24 of latex and passes through oven 32 when water is evaporated, and between rolls 37, 38 where a film of vaporizable foaming agent is applied.  The coated, impregnated sheet passes into steam chest 46 in which the thermoplastic particles are foamed and caused to adhere together to form a foamed sheet 48 attached to paper sheet 20.  Fig. 4 shows a similar arrangement for foaming an unsupported foamed sheet, the layer of latex, e.g. of polyvinyl chloride, being evenly spread by doctor blade 56 on endless band 54, dried by infra-red heaters 60, sprayed at 62 with foaming agent, e.g. dichlorodifluoromethane, and foamed in steam chest 64.
Patent GB-1165833-A (GB)
Title: Mechanism for Child's Ride
IPC: A63G19/20
Filed: 1967-05-30
Abstract: 1,165,833. Child's ride. R. G. MITCHELL (SALES) Ltd. 7 May, 1968 [30 May, l967], No. 24858/67. Heading A6M. A mechanism for effecting compound movement of the seat of a child's ride comprises a support member 1, on which may be mounted a seat, connected at one end to a crosspiece 16 which,is pivotally connected to arms 7 (not shown) and 8 rockably mounted on shaft 12 (not shown), shaft 12 being mounted on the base plate 15 by bearings' 13 (not shown) and 14, and connected at the other end by a pivot to an eccentric element 10, all whereby when the eccentric is rotated both vertical and horizontal motions are imparted ,to the seat in the support arm. 10 may be driven by an electric motor through a reduction gearbox, and the electric motor may be controlled by a time switch.
Patent GB-766718-A (GB)
Title: Improvements in or relating to ships' derricks
IPC: B66C23/60
Filed: 1954-08-26
Abstract: 766,718. Jib cranes. DIETLEIN, H. W. A. VON., [trading as STULCKEN SOHN KOMM.- GES., H. C.]. Aug. 26, 1954 [Feb. 11, 1954; April 5, 1954J, No. 24885/54. Class 78 (4). Independently-winched hangers 53, supporting a boom 5 from a pair of masts 3 are so guided that the boom may be swung through the masts from one side to the other and the load tackle 43, 44 is arranged so that it may be swung from one side of the boom 5 to the other without unreeving. As illustrated, the blocks 58 on the boom for the hanger tackle are carried on sleeves each of which rotates about one limb 40 of a fork at the end of the jib while the blocks 56 adjacent the masts 3 are carried by rotating heads 14 on the masts. The hauling ends 52 of the hanger tackles pass into the hollow interiors of the heads 14 over pulleys 46 and down through the hollow masts to pass over pulleys 47, 48 which guide them out of slots 54 to pass to the hanger winches. The hauling ends 43 of the load tackles similarly pass from pulleys 42 carried by the rotatable sleeves 41 on the fork ends of the jib into the interior of the heads 14 of the masts and over pulleys 45, 49, 50 to pass out of slots 51 in the masts to the load winches. When the boom is to be moved from one side of the mast to the other the lower block 63 is drawn up to the upper block 62 so that interengaging surfaces 64, 61 on the blocks connect them, to swing over a bolt 59 from which the upper block 62 is suspended. As the blocks pass through the fork 40 the hauling ends 43 of the load tackle are guided by pulleys 66, 67 carried on discs 65 free to rotate on either side of the lower block.
Patent GB-1106628-A (GB)
Title: A method for the fermentative production of tetracycline
IPC: C12P29/00
Filed: 1965-06-14
Abstract: Tetracycline is produced by cultivating a strain of Streptomyces aureofaciens, capable of producing both chlortetracycline and tetracycline, in a liquid nutrient medium containing assimilable carbon and nitrogen sources, inorganic nutrient salts and a chlorination inhibitor which is a natural liquid material containing organic-bound sulphur which is present in a plant of the genus Brassica or garlic.  The material may be in the form of mustard or rape seed, unrefined oil or cake. Benzyl thiocyanate may be present to stimulate the production of antibiotic.
Patent GB-1135892-A (GB)
Title: Indanyl-n-methylcarbamic acid esters
Inventor: HEISS RUDOLF
IPC: C07C271/06
Filed: 1967-05-31
Abstract: 1,135,892. Indonyl N - methylcarbonates. FARBENFABRIKEN BAYER A.G. 31 May, 1967 [18 June, 1966], No. 25131/67. Heading C2C. [Also in Division A5] The invention comprises compounds of formula wherein R is H or Me, and X is H, Me or Cl. These compounds are prepared by reacting the corresponding indanol with (a) MeNCO, or (b) excess COCl 2  to give the chloroformate which is reacted with MeNH 2 , or (c) the equivalent amount of COCl 2  to give the bis-indonyl carbonate which is reacted with MeNH 2 .
Patent GB-221102-A (GB)
Title: Improvements in or relating to apparatus for the electrolysis of water
IPC: C25B9/19
Filed: 1923-10-10
Abstract: 221,102. Casale, L. Oct. 10, 1923. Electrodes; connections; diaphragms; oxygen and hydrogen, obtaining.-Apparatus for the electrolysis of water comprises electrodes which are formed by series of horizontal louvre-like strips, are separated by diaphragms, and are arranged closely adjacent so that the gases generated are conducted within the electrodes. Electric connection to alternate electrodes is made at the top and at the bottom respectively, to equalize the potential differences at different points. The louvre strips, not shown in detail, may be soldered to vertical tubes 1, one or more tubes being provided for each electrode. In the electrodes A of one polarity, conductors 5 are connected to the upper ends of the tubes. In the remaining electrodes B, each tube may be connected at its lower end to a conductor 4, which passes up through a lining of asbestos or the like within the tube. Alternatively, conductors for the second set of electrodes B pass through the bottom of the tank, from which they may be insulated or not; in the latter case, a porous diaphragm forms a lining for the tank. Narrow bells 6, preferably non-conducting, collect the gases from the electrodes A, B.
Patent GB-1149722-A (GB)
Title: Improvements in and relating to tyre building apparatus
IPC: B29D30/26
Filed: 1966-06-07
Abstract: 1,149,722. Tyre-building apparatus. DUNLOP CO. Ltd. 7 June, 1966 [11 June, 1965], No. 25301/66. Addition to 1,149,723. Heading B7C. A transfer ring 10 which holds by suction a radially-expanded tyre tread and/or breaker component comprises circumferentially-spaced double-acting piston-cylinders 16, 17 for pressing related circumferentially-spaced parts of the component into contact with the carcass to prevent relative axial displacement. In use the component is expanded by its building former (12) (Fig. 1, not shown) into sealing contact with the ring 10, the ring is moved axially to surround the shaped carcass 13, and the pistons 16 are moved radially inwardly. Suction is released to permit contraction of the component, which is then pressed completely into contact with the carcass. The ring 10 is held centred with the carcass 13 and former (12) respectively by engagement of pivoted pawls 43, (27) with collars 25 on the ring carrier.
Patent GB-1329186-A (GB)
Title: Copy sheet for use in a thermographic copying system
IPC: G03C1/498
Filed: 1971-04-19
Abstract: 1329186 Photographic materials and transfer processes NASHUA CORP 19 April 1971 [2 April 1970] 25306/71 Heading G2C A material for use in a copying process comprises a support coated with a non-light-sensitive silver salt and a benzylidene or naphthylidene hydrazone which is present in an amount such that the silver salt is not reduced on heating the material except in the presence of another reducing agent. The material is preferably used as a receiving sheet in the processes of Specifications 1002350, 1280593 and 1296969 wherein a sheet containing a naphthol, an acetonitrile or a pyrazolinone as reducing agent is imagewise exposed to light to render the agent inactive and then placed in contact with the-receiving sheet whilst heating to transfer the remaining reducing agent and produce a black image. Alternatively this second, light-deactivable, reducing agent may be present in the material. A dye may be present to extend the sensitivity of the second reducing agent to the visible spectrum.