baber/WOPTO huggingface dataset:
Patent GB-856507-A (GB)
Title: Improvements in supersonic airfoil
Inventor: NIAL WALTER RICHARD
IPC: B64C30/00
Filed: 1959-04-21
Abstract: 856,507. Aircraft wings and propulsion units. GENERAL ELECTRIC CO. April 21, 1959, No. 13537/59. Class 4. [Also in Group XXVI] A wing for a supersonic aircraft comprises vertically-spaced upper and lower portions 5 and 4 which define between them a chamber 7 constituting a ram-jet propulsion unit. The upper surface of portion 5 is planar and inclined as shown to the horizontal 10 in flight and the lower surface of portion 5 is substantially parallel thereto, the two portions being connected by faired struts 6. The lower surface of portion 5 commences at a beak 8 and extends rearwardly in a concave surface 11, which may be continuous as shown or formed by a plurality of discontinuous flat portions, to form with the upper surface of portion 4 a throat referred to as a supersonic pressure chamber which extends into an enlarged combustion chamber 7 provided with a propulsion nozzle 30. The profile of surface 11 is selected to generate an infinite number of shock waves 14, 15, 16, 17 which will intersect a principal shock wave 9 generated at beak 8 to increase its magnitude and deflect it from the leading edge 17 of the portion 4. The pressure rise beneath surface 11 resulting from the shock waves provides a lifting effect on the aerofoil. A further shock wave 20 from leading edge 17 results in reflections 21-23 and a standing wave 24. This results in a pressure increase within chamber 7. The Figure is a chordwise cross-section through an aircraft wing and the duct may extend throughout the span. Ducts 31 and 32 are provided to bleed boundary layer air from the lower leading surfaces of portions 5 and 4 and such air may be used to cool the walls of the combustion chamber.
Patent GB-407215-A (GB)
Title: Improvements relating to electric battery lamps
IPC: F21L4/00
Filed: 1933-05-10
Abstract: 407,215. Electric battery lamps. BATTERIEN-U. ELEMENTE-FABRIK SYSTEM ZEILER AKT.-GES., 20, Rungestrasse, Berlin. May 10, 1933, No. 13567. Convention date, Sept. 19, 1932. [Class 39 (ii).] In an electric torch in which the casing 2 is constructed from moulded insulating material, such as that known under the Registered Trade Mark " Bakelite," and is permanently closed at one end, the bottom of the battery casing 3 constitutes one of its terminals and is in contact with a metal strip 5 which through a switch 4 and a second strip 6 closes the battery circuit. The electric lamp 8 is fitted into a metal reflector 7 which is held in position by a cover glass 9 and a flanged ring 10, all of these parts being enclosed in a flared casing 1 which is screwed on to the main casing 2 at a.
Patent GB-991647-A (GB)
Title: Improved oxidation-resistant lubricating composition
IPC: C10M137/10
Filed: 1962-04-09
Abstract: Group II metal di-organo phosphorodithioates are treated with up to 0.75 mols. of an epoxide per mol. of phosphorodithioate. The metal is preferably Ca, Ba, Sr, Zn or Cd.  In Examples (1)-(3), zinc dioctyl phosphorodithioate is treated with 0.5, 0.25, and 0.125 mols. respectively of propylene oxide; (4) zinc di-(4-methyl-2-pentyl) phosphorodithioate with 0.65 mols. of propylene oxide; (5)-(6 zinc mixed isopropyl/4-methyl-2-pentyl and zinc mixed isobutyl/n-pentyl phosphorodithioates with 0.52 mols. of propylene oxide in each case; and (7) zinc di-(p-heptylphenyl)phosphorodithioate with 0.25 mols. of propylene oxide, the mol. figures of propylene oxide being per mol. of zinc salt.  Other products from different metal salts and different epoxides are named in Examples (A)-(U).  The epoxide used may be an alkylene oxide, epichlorohydrin, an epoxidized copolymer or a substituted epoxide including epoxidized-tung or -soya bean oil.ALSO:Group II metal diorgano phosphorodithioates are treated with up to 0.75 moles of an epoxide per mole of phosphorodithioate. Epoxides mentioned include (1) an epoxidized terpolymer of 95 parts (by weight) isobutene/3 parts butadiene/2 parts styrene (M.W. 2000), and (2) epoxidized copolymer of 90 parts isobutene/10 parts isoprene (M.W. 5000).ALSO:A lubricating composition contains 0.001-0.35% by weight as phosphorus of an oxidation-inhibiting agent prepared by treating a Group II metal phosphorodithioate with up to 0.75 mols. of an epoxide per mol. of phosphorodithioate. The phosphorodithioate preferably comprises one or more Ca, Ba, Sr, Zn, or Cd salts of an acid of formula <FORM:0991647/C4-C5/1> where R1 and R2 are alkyl, alkaryl, arylalkyl, or cycloalkyl, any of which may be substituted, e.g. by halogen atoms; whilst the epoxide may be an alkylene oxide or arylalkylene oxide, which may be substituted by any polar group, e.g. chloro. Many examples of these compounds are given. Optional additives which may also be present are selected from (1) neutral and basic alkali or alkaline earth metal salts of sulphonic acids, carboxylic acids, and phosphorus acids (e.g. those prepared from P2S5 and olefin polymers); (2) detergents, such as amine salts, amides, imides of fatty acids, and polymeric materials, e.g. acrylate and methacrylate copolymers, and reaction products of polyamines with polyolefin substituted succinic acids; (3) extreme pressure agents such as chlorinated wax, organic sulphides and polysulphides, sulphurized materials, di- and tri-organic phosphates, and metal dithiocarbamates; and (4) actually in the examples, polyalkylmethacrylates, polyalkylsiloxanes, lard oil, and some compounds in categories (1)-(3) above, examples of which are also given outside the specific examples. The lubricating oil base of the composition may be of mineral, animal, vegetable or synthetic origin (e.g. didecyl adipate and di-2-ethylhexylsebacate). The oil may be gelled, e.g. to grease consistency.
Patent GB-1068356-A (GB)
Title: Improvements in or relating to ladders,scaffolds and like devices
IPC: E04G1/18
Filed: 1965-03-31
Abstract: 1,068,356. Ladders. J. LEWIS. Nov. 29, 1965 [March 31, 1965], No. 13621/65. Heading A6L. [Also in Division El] A ladder or scaffold comprises superimposed telescopically engaged units each consisting of uprights spanned by rungs engaged in openings in the uprights, each upright of a superimposed unit resting on a rung of a lower unit. In a scaffold the uprights 9, 10 of two upper units engage in uprights 4 of two lower units at right angles and rest on the rungs 6, engaged in openings 5. The upper ends of the uprights 9, 10 telescope inside the uprights of a further pair of superimposed units. In a ladder the uprights 9, 10 of an upper unit engage in the uprights 3, 4 of a lower unit. The uprights and rungs are of tube of square cross-section.
Patent GB-474883-A (GB)
Title: Improvements in machines for polishing granite, marble, terrazzo, glass and the like
IPC: B24B41/047
Filed: 1936-05-09
Abstract: 474,883. Grinding and polishing marble, glass, &c. HAY, H. M. May 9, 1936, No. 13627/35. [Class 60] In a machine for polishing or grinding a flat surface on granite, marble, terrazzo, glass, &c., a polishing &c. head is employed comprising a casing 1 secured to a driving shaft 2 journalled in a fixed tube 3 carried by an arm 4. Journalled in the casing are three spindles 5. each carrying an abrasive or polishing disc 6 with a flat face 6<1>, the spindles also each carrying a gear 7 meshing with an idler pinion 8 engaging a sun pinion 9 secured to the tube 3, the ratio of the gears 7, 9 being approximately unity; the casing also has journalled therein spindles 11 with pinions 12 meshing with the gears 7, so that by placing the discs 6 on the spindles 11 instead of on the spindles 5, the sense of rotation of the discs in relation to the rotation of the casing 1 is reversed. During polishing, the work is stationary and the head is given a slow traverse. Specification 288,145, [Class 60], is referred to.
Patent GB-1020526-A (GB)
Title: High temperature jet lubricant
IPC: C10M169/04
Filed: 1964-04-02
Abstract: Lubricant compositions comprise (a) at least 50 wt. per cent of an ester formed between pentaerythritol and a C2- 18 organic acid, (b) 0.5-5 wt. per cent, based on the whole composition, of an antioxidant, (c) 0.001-1 wt. per cent of an equimolecular salt of 1-salicylalaminoguanidine and a C14- 18 aliphatic carboxylic acid, (d) 0.001-1 wt. per cent of a polyhydroxyanthraquinone, and (e) 1-10 wt. per cent of a neutral organic phosphate or phosphite; and optionally (f) 0.0001-0.01 wt. per cent of a defoamant.  In (a) the pentaerythritol may be tetramethylol methane, or a di-, tri- or tetra-pentaerythritol, and the acid may be aliphatic, cycloaliphatic or aromatic, examples of suitable esters being given, which also include mixed esters.  Component (b) may be a phenol, an ester, a phosphite or an amine, typical of many being 4-tertiary butyl catechol, hexyl gallate, tri-tertiary amyl phenyl phosphite, polymerized trimethyl dihydroquinoline, phenothiazine, and a mixture of phenyl-alphanaphthylamine, and dioctyl diphenylamine. Component (c) may be in the form of a solution in a mixture of isopropanolland methanol, and part of the acid portion of the salt may be roison acids.  Component (d) may be a dihydroxyanthraquinone, e.g. 1,4 - dihydroxy anthraquinone (quinizarin), and its isobutyl substituted derivative.  Typical of many specified components (e) are methyl ditertiarybutyl phosphate, tricresyl phosphate, and tricyclohexyl phosphite. Component (f) may be a lower alkyl silicone, e.g. dimethyl, diethyl, methyl ethyl, and methyl pentyl silicone.  The invention is stated to include concentrates comprising components (a)-(e), (a)-(f), (b)-(e) and (b)-(f), those containing (a) having it present in only a small proportion.
Patent GB-845248-A (GB)
Title: New thiazolidine derivatives
Inventor: TAYLOR ALAN
IPC: C07D277/06
Filed: 1958-04-30
Abstract: The invention comprises compounds of formula:  <FORM:0845248/IV(b)/1> where R1 is C1-55 alkyl or benzyl, either of which may be substituted, e.g. by nitro, and R2, R3 and R4, which may be the same or different, are hydrogen or C1-5 alkyl.  They are prepared by reacting a compound:  <FORM:0845248/IV(b)/2> where R1 is C1-5 alkyl with a compound:  <FORM:0845248/IV(b)/3> or a salt thereof.  A condensing agent such as an alkali metal alkoxide and an inert diluent such as an aliphatic alcohol are preferably used.  Specified starting materials are benzyl and n-butyl a -ethoxymethylenenitroacetates, crysteine and penicillamine. Specification 842,797 is referred to.
Patent GB-107493-A (GB)
Title: Improvements relating to Electric Switches.
Inventor: HOPE VERNON
IPC: H01H21/36
Filed: 1916-09-28
Abstract: 107,493. Hope, V. Sept. 28, 1916. Mechanically-interconnected switches; handles; switchboards.-Double-pole switches for ironclad distribution boxes are formed of two tumbler switches B, B', the dolly heads b, b<1> of which are moved in opposite directions by a slotted connecting bar C fulerumed at c<2> and actuated by a crankhandle pivoted in the cover of the box, the handle D being outside the box and the crank-pin d' passing through one of the slots in the bar C. The handle has a pointer d<6> moving over a quadrantal index d<3> moulded in the cover.
Patent GB-1145157-A (GB)
Title: An improved process for the separation of a mixture of substances having different specific gravities
Inventor: STOKES ROGER PAGET
IPC: B03B9/00
Filed: 1966-03-29
Abstract: 1,145,157. Wet separation of granular materials. R. O. STOKES & CO. Ltd. 21 March, 1967 [29 March, 1966], No. 13777/66. Heading B2H. In a plant for separating for example, coal from shale, a mixture of the latter and water is fed from a distributing box 1 on to a screen 3 for separation of the fines which are fed with the water by a pump 35 through a cyclone 37 from which the water and slime pass into an effluent pond. 39 and the dewatered fines pass into a hydraulic classifier 43 in which the teetering medium: is water. The fine shale settles down and is discharged at 48 into a sump 49 from which it is pumped to a dewatering cyclone 39. The rejected slime and water is then pumped to the pond 39 and the dewatered shale drops on to a waste shale conveyor 19. The fine coal is floated off the classifier at 45 and passes into a sump 27. The oversize coal and shale mixture from the screen 3 is fed to another hydraulic classifier 7 in which the teetering medium is a mixture of sand, introduced from a thickening cyclone 9, and water. The coarse shale together with a certain amount of sand passes out from the bottom of the classifier on to a screen 13 from which the oversize shale is discharged on to the conveyor 19 while the undersize sand is led to a sump 31. The coarse coal with some sand is floated off at 21 and led to a screen 23 from which the coarse coal is discharged to join the fine coal at 25 in its passage to the sump 27 while the undersize sand is led to the sump 31. The mixture of fine and coarse coal is pumped from the sump 27 through a centrifuge or other dewaterer before use. The sand in sump 31, which may also contain fresh sand from a hopper 17, is pumped to the cyclone 9. Water is pumped to the bottom of each hydraulic classifier from a supply 55. The plant may also be used to separate coke and clinker or a mixture of metalliferous ores. The teetering medium in the latter case being a mixture of barytes and water.
Patent GB-1343787-A (GB)
Title: Process for purifying methylterephthalic and methyl-isophthalic  acid salts
IPC: C07C51/42
Filed: 1971-05-07
Abstract: 1343787 Purification of methylterephthalic and methylisophthalic acid salts TEIJIN Ltd 7 May 1971 [7 May 1970 (2)] 13806/71 Heading C2C A process for treating a mixture of a methylterephthalic acid salt and a 4-methylisophthalic acid to increase the proportion therein of the methylterephthalic acid salt, the salt being with at least one base which is (a) ammonia, (b) an aliphatic straight chain #, #<SP>1</SP>-diamine having an even number of carbon atoms and 2 to 12 carbon atoms (c) a diamine of formula wherein each of the symbols n, which may be the same or different, is 1, 2 and 3 or # is a p-phenylene or p-cyclohexylene group, (d) bis(p-aminocyclohexyl) methane, or (e) piperazine, comprises concentrating and/or cooling an aqueous solution of the mixture to precipitate methyl terephthalic acid salt or a mixture thereof with 4-methylisophthalic acid salt containing an increased proportion of methyl terephthalic acid salt. The thus purified methylterephthalic and methylisoterephthalic acid salts may be converted to their respective acids by the treatment of a mineral acid.
Patent GB-552928-A (GB)
Title: Improvements in and relating to screw piles and cylinders
IPC: E02D5/38
Filed: 1941-10-28
Abstract: 552,928. Screw piles. BRAITHWAITE & CO. ENGINEERS, Ltd., and WILSON, G. Oct. 28, 1941, No. 13840. [Class 68 (ii)] A screw-head 10 in a concrete pile is driven by means of a tubular removable mandrel 16 secured by detachable bolts 19. A permanent concrete pile or cylinder is placed or fabricated within the mandrel or a thin metal sheath . In moulding such a pile or cylinder is pivoted prior to withdrawal of the mandrel, the sheath being left in place. For a cylinder an outer and an inner sheath are employed. The concrete may be cast around a reinforcement. The connection between the mandrel or the sheath and the screw head is made watertight. If jetting should be necessary the nose-piece 14 may be replaced by that described in Specification 552,929.
Patent GB-130810-A (GB)
Title: A Parcel Carrier Attachment.
Inventor: MARTIN JAMES ALEXANDER
IPC: A45B1/00
Filed: 1918-08-28
Abstract: 130,810. Martin, J. A. Aug. 26, 1918. Combined with parcel carriers; mounts and like attachments.-A parcel-carrier attachment consists of a hook part B provided with means for fixing it to the stick of an umbrella or to a walking-stick. The means for fixing the hook may be a half-hoop A integral with the hook, screws, or nails E fixing the half-hoop to the stick; or it may be a disk A<1>, Fig. 8, bent to fit the stick, or a plate A<2>, Fig. 9. In another form, the hook is provided with a screw stem G, Fig. 10, to screw transversely into the stick. A safety hook, as shown in Fig. 4, may be employed. In this form, the string of the parcel will remain in the hook even if the stick were inverted. According to the Provisional Specification, the fixing-device may consist of a clip.
Patent GB-217583-A (GB)
Title: Improvements relating to electrical motor-generator sets
IPC: B60L9/04
Filed: 1924-06-06
Abstract: 217,583. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Storer, N. W., and Ferris, R. E.). June 14, 1923, [Convention date]. Rotary transformers. -A dynamo-electric machine for transforming a high-voltage continuous current to a lower voltage for operating auxiliary equipment on electric railway cars, such as the air-compressors and the control and lighting equipment, comprises a number of motorgenerator sets in which all the motor and generator field windings are in series with the motor armatures across the high-voltage supply, the generator armatures being connected in parallel to low-voltage bus-bars. In the preferred form, two rotatable shafts 16, 17 within a housing 21 each have a motor armature 25 with commutator 26 coacting with a two-pole field, and a generator armature 27 with commutator 28 coacting with a four-pole field. The ends of the shafts may be adapted to drive mechanical loads. In addition to the series field windings 32, 35, the motors and generators have windings 31, 34 connected across the low-voltage bus-bars 12. Specification 12641/14 is referred to.
Patent GB-452882-A (GB)
Title: Improvements in or relating to tobacco cartridges or refills and to means for manufacturing them
IPC: A24D1/14
Filed: 1935-05-13
Abstract: 452,882. Creasing paper &c. MOLINS, H. B., 2, Evelyn Street, Deptford, and ISAACS, M. H., 7, Thavies Inn, both in London, [Representatives of MOLINS, W. E.] May 13, 1935, Nos. 13935 and 17613. [Class 100 (ii)] [See also Group VI] In making pleated wrappers for tobacco cartridges, the wrapper traverses a-plate 15 between inclined guides 16 and the central part is depressed by a bar 17 into an aperture between the guides. The depressed portion is controlled by an adjustably mounted bar 19 and is folded around a foot 20 on the bar 17. The pleated material passes under pressure rollers and is slit at intervals by rotatable knives co-operating with a grooved roller.
Patent GB-134257-A (GB)
Title: Improvements in Safety Shutters for Affording Protection Against Fire in Cinematograph Projectors.
Inventor: WILLMANN ALFRED HENRY
IPC: G03B21/18
Filed: 1918-08-28
Abstract: 134,257. Willmann, A. H. Aug. 28, 1918. Kinematograph apparatus. -A safety shutter d, Figs. 1 and 2, which falls to cover the gate aperture and operates a switch to cut out the motor circuit and complete a bell circuit when the film breaks, is normally held up by a lever f, which itself is held in operative position by a pendulum lever g in contact with the film c. The lever f has a spring catch h at one end to engage the shutter d, and at the other end a projection h' is in engagement with a curved surface i on the lever g, and is held in engagement therewith by the spring i<1>. The pivot f<2> of the lever f is horizontally adjustable. When the film breaks, the shutter d is released, and an extension m<1> rocks a switch l to cut out the motor circuit and close a bell circuit. The arm m on the shutter returns the switch l when the shutter is opened. In a modified construction, Fig. 5, for film gates in which the feedsprocket n<1> is immediately below the film gate, the shutter has two leaves, and the pendulum lever n rests against the film between two rollers o, o' over and under which the film passes after it leaves the sprocket-wheel n'.
Patent GB-253061-A (GB)
Title: Method of and apparatus for forming letters signs or symbols in the air
IPC: G09F21/16
Filed: 1924-12-08
Abstract: 253,061. Remey, J. T. Dec. 7, 1923, [Convention date]. Visible non-luminous signals. - Comprises a method of and apparatus for sky-writing consisting in dropping from an aircraft in flight a plurality of smoke-emitting bombs provided - with time fuses, the bombs being dropped in succession forming substantially parallel smoke trails in a vertical plane, the trails being of different lengths and placed so as to build up a letter as shown in Fig. 1. The smoke bombs 80 have each a fuse 81 extending therethrough and connected to a master fuse 82 held in a slotted tube 83 associated with a casing 84 open at the lower end. Each bomb 80 is provided with one or more smoke-producing segments 85 the length and disposition of the segments being regulated according to the length and disposition of the smoke trails desired. The bomb of Fig. 4 will first trace two short separated trails and then a separate longer trail. Weights 86 are graded to keep the bombs at approximately the same weight. Specification 225,884 is referred to.
Patent GB-1506387-A (GB)
Title: Alarm indicator systems
IPC: G08B19/00
Filed: 1975-04-02
Abstract: 1506387 Alarm systems BRITISH RAILWAYS BOARD 2 April 1975 [29 March 1974] 14060/74 Heading G4N In an alarm indicator system having audible and/or visual indicating devices for indicating the occurrence of alarm conditions, the system is arranged to receive two or more input signals A, B of which A represents a more urgent condition, the different signals are arranged to produce pulsed outputs of different frequency on a common indicator 11, the system being arranged so that signal A takes precedent over other signals when more than one signal appears simultaneously. As described, the system is applicable to monitoring the security of a plurality of doors. Fig. 3 shows a local indicator system. Signals B are fed to gate G1 which is cross-coupled with gate G2 to form a multivibrator operating with a low mark/space ratio, the pulses from which are used to modulate an oscillator formed by gates G3, G4, the output of which is amplified at TR3, TR4 so as to form a "peep-peep" sound in loudspeaker 11. The more urgent signals A are also fed to transistor TR2 which converts the mark/space ratio of the multivibrator G1, G2 approximately to unity so as to provide a more rapidly pulsating sound in loudspeaker 11. After a time determined by a circuit C3, G5, G6, transistor TR1 is turned on to provide a third mark/space ratio different from the other two. Fig. 4 (not shown) depicts the circuit diagram of a remote station responsive to a plurality of A and a plurality of B signals and including a respective LED for each signal. A further loudspeaker is provided with a volume control which is overridden by any A signal.
Patent GB-136469-A (GB)
Title: Improvements in Vaporisers for Internal Combustion Engines.
IPC: F02B9/10
Filed: 1919-06-04
Abstract: 136,469. Robson, Ltd., J., and Salmon, E. H. June 4, 1919. Cylinders receiving liquid fuel.-D-shaped vaporizers 1 which communicate with the cylinder through a round passage 4 have the corner at 11 filled in so that the surfaces 7, 8 are continuous, and the sides 9 of the passage 4 are splayed at the junction with the surface 6.