baber/WOPTO huggingface dataset:
Patent GB-1237362-A (GB)
Title: Fuel control apparatus for gas turbine engines
Inventor: IFIELD RICHARD JOSEPH
Filed: 1967-03-16
Abstract: 1,237,362. Gas turbine fuel systems. JOSEPH LUCAS (INDUSTRIES) LTD. June 14, 1968 [March 16, 1967], No. 12391/67. Heading F1G. In a gas turbine engine fuel system in which the fuel flow is controlled by a throttle, a valve controls the escape of fuel by-passing the throttle to provide a fuel pressure which is used to position the throttle, two capsules are connected by a lever mechanism, the lever being connected between the capsules to the valve, the length of one capsule being dependent on the ratio of two pressures obtained from the engine compressor, and the length of the other being dependent only on changes in the higher of the two pressures, the arrangement being such that when the ratio is below a predetermined limit, the valve is positioned in accordance with a function of the higher pressure but when the ratio is above the predetermined limit the lever mechanism reaches a stop and the function which determines the position of the valve is then related to the ratio of the two pressures. The pressure at the delivery or an intermediate stage of the engine compressor acts via a connection 32 on the outside of two capsules, one of which, 30, is evacuated while the other, 29, has its interior exposed via a connection 31 to the inlet pressure of the engine. The capsules are connected via a lever 33 to act jointly on a valve 22 which controls the leakage of fuel from an inlet 10 to a drain passage 21 via a groove 26, annular passages 25, 25a and a passage 28, whereby a variable pressure is established intermediate the annular passages 25, 25a and applied via a passage 23 to a throttle piston 14 in opposition to a spring 17. The throttle piston 14 controls the flow of fuel from the inlet 10 to an outlet 12 leading to the engine. To reduce friction between the piston 14 and a sleeve 13, the latter is rotated through a gear 19 while the piston is held against rotation by a plate assembly 18. At low engine speeds, the lever 33 contacts a stop 34 and the valve 22 is controlled by the capsule 30 alone. When a predetermined speed and therefore a predetermined ratio of the pressures has been reached, the lever 33 contacts the stop 35 and thereafter the valve 22 is controlled by the capsule 29 alone.
Patent GB-1531283-A (GB)
Title: Silver halide photographic element containing dye-releasing redox compound
IPC: C07C301/00
Filed: 1976-03-26
Abstract: 1531283 Photographic silver halide material containing dye-releasing redox compound FUJI PHOTO FILM CO Ltd 26 March 1976 [28 March 1975] 12397/76 Heading G2C [Also in Divisions C2 and C4] A photographic material comprises at least one silver halide emulsion layer having associated therewith a dye-releasing redox compound of the Formula: - where G is OH of a group capable of yielding OH on hydrolysis; Col is a diffusible dye moiety or a group capable of yielding the dye moiety on hydrolysis; R is optionally substituted alkyl or aryl; each X is a substituent, at least one of the X substituents being electron-donating, and one X together with another X or R can complete an alicyclic or heterocyclic condensed ring; n is 1-3, and X, n and R are selected such that the total number of C atoms in all the substituents represented by X and R is greater than 8 so that the compound is ballasted and non-diffusible within the layer. The electron donating substituent is preferably alkyl, alkoxy, alkylthio or arylthio. Examples 1-4 relate to colour diffusion transfer processes and Example 5 relates to a non-transfer embodiment.
Patent GB-1414287-A (GB)
Title: Preparation of 1,3-dichloro-2-butene
IPC: C07C17/00
Filed: 1974-03-20
Abstract: 1414287 1,3-Dlchloro-2-butene E I DU PONT DE NEMOURS & CO 20 March 1974 [21 March 1973] 12409/74 Heading C2C 1,3-Dichloro-2-butene is produced continuously by reacting 2-chloro-1,3-butadiene with an aqueous solution containing HCl and 15-24 wt. per cent of CuCl 2  at 15-35‹ C. and maintaining the concentration of HCl in the solution at a level of at least 29 wt. per cent of the aqueous solution and the volume ratio of aqueous solution to 2-chloro-1,3-butadiene is greater than 12 : 1. The reaction is preferably conducted at superatmospheric pressure, e.g. at 15 p.s.i.g. above atmospheric pressure with an HCl concentration of 30-32 wt. per cent and volume ratio of 16 : 1 to 22 : 1 at 20-30‹ C.
Patent GB-335522-A (GB)
Title: Improvements in the conversion of hydrocarbons of high boiling point range into valuable products, especially those boiling at low temperatures
Filed: 1929-04-23
Abstract: 335,522. I. G. Farbenindustrie Akt.- Ges. April 23, 1929. Addition to 296,700. Hydrocarbons, cracking; hydrogenation, destructive.-The process of the parent Specification is modified by subjecting the carbonaceous material to a mild cracking process whereby a far-reaching formation of benzine is avoided, the product remaining after any benzine formed has been separated off being subjected to destructive hydrogenation; residue from the last process may be again cracked and destructively hydrogenated. The initial cracking may be carried out with or without hydrogen, or gases supplying hydrogen or other gases such as nitrogen, water vapour, ethane, methane, ammonia, oxides of carbon &c. The temperatures employed depend on the rate throughout, the pressure and the nature of the extraneousgases employed. Temperatures between 450‹ and 650‹ are employed with a throughput of one cubic metre of treated material per cubic metre of cracking space per hour. Atmospheric pressure may be used, but when no hydrogen is present the pressure may be 50 atmospheres, Somewhat reduced pressure may be necessary where the materials operated on contain a high proportion of low boiling constituents. When hydrogen is used in the extraneous gas, the pressure does not exceed 10 atmospheres so that no destructive hydrogenation of the initial material takes place during the first stages. During this stage, part of the contents may be led out from and back into the heating chamber to effect stirring and minimize the deposition of coke. Catalysts may be employed in all stages, those for the initial stage having a splitting action, such as bauxite, silica gel, active charcoal or alumina, &c. For the destructive hydrogenation, those set forth in Specifications 247,583, 247,584, 247,585, 247,586, 247,587, 249,501, 251,264, 258,272, and- 331,558 may be used. The destructive hydrogenation may be carried out in stages having different conditions of pressure and temperature. In an example, mid-continent gas oil was cracked at 50 atmospheres and 460‹ C. and the whole of the product without reduction of pressure passed into a rectifying column where 25 to 30 per cent of benzine was separated from the higher boiling products; these were subjected to the action of hydrogen at 200 atmospheres and 450‹ C. in molybdenum and zinc oxides. 50 to 60 per cent of the products consisted of benzine, the remainder being a light gas oil which was again cracked to yield benzine.
Patent GB-1300002-A (GB)
Title: Ventilator with heat exchanger
IPC: F24F3/147
Filed: 1970-03-16
Abstract: 1300002 Ventilating units; plate heat exchangers MITSUBISHI DENKI KK 16 March 1970 [20 March 1969 30 April 1969 (3) 8 May 1969 12 May 1969 15 Aug 1969 20 Aug 1969 4 Nov 1969] 12560/70 Headings F4S and F4V Ventilating apparatus comprises a housing 12 mounted in a wall of a room, a motor vehicle or an air conditioning unit, a fresh air inlet fan 48s and a room or car air exhaust fan 48e of the centrifugal or transverse-flow type and a heat exchanger 20 which includes flat laminations of a material which is heat conductive and moisture permeable, and spacers between adjacent laminations to define air flow gaps, alternate gaps communicating with the fresh air inlet fan and the remaining gaps with the exhaust air fan. The laminations may be made of Japanese paper containing synthetic fibrous material and the spacers are made of Kraft or Kent paper. Filters 44 and 46 are provided. The laminations may be rhombic or circular, the air flow streams may intersect in the heat exchanger 20 at an angle other than 90 degrees and the spacers may be of triangular, rectangular or sinusoidal waveform. A panel 14 of the housing 12 may be removable to provide access to or for removal of the heat exchanger 20.
Patent GB-122429-A (GB)
Title: Improvements in or relating to Stopping and Turning Indicators for Vehicles.
Inventor: SHEPHARD WALTER STEPHEN
IPC: B60Q1/34
Filed: 1918-04-04
Abstract: 122,429. Shephard, W. S. April 4, 1918. Road traffic signals on vehicles.-In a turning and stopping signalling device for motorvehicles, an indicator is provided for each of the signals "right," "left" and " stop," and each indicator comprises a number of pivotally mounted plates a which can be rotated simultaneously to display either side of the plates. On one side is painted an arrow or suitable word, and the plates are rotated to exhibit this word &c. by means of a rack c', c<2>, c<3> engaging pinions on the plate spindles and operated by a corresponding electro - magnet, the armature of which moves the rack through a connexion f<1>, f<2>, or pin- and-slot engagement e'. The turning-signal electro-magnets are controlled by contacts operated by the steering wheel, and the stopping signal by contacts closed when the brake is applied. Lamps may be provided to illuminate the plates at night; the Specification also states that the plates may be replaced by transparencies illuminated from behind.
Patent GB-832625-A (GB)
Title: Process for the manufacture of ª‡-mercapto ketones
Inventor: ASINGER FRIEDRICH
Filed: 1956-04-25
Abstract: a -Mercapto-ketones are prepared by reacting sulphur, or a polysulphide, and ammonia with a ketone as defined and by the method described in Specification 832,624 and hydrolysing the resulting D -3,4-thiazoline with a dilute mineral or organic acid. In examples: (1) diethylketone is reacted with powdered sulphur and ammonia, the resulting 2,2,4-tri-ethyl - 5 - methyl - thiazoline - D  - 3,4 is isolated and heated with aqueous 2N-HCl and the hydrolysis product is worked up to recover a -mercapto diethyl ketone, unchanged thiazoline and some by-product 2,5-di-ethyl-3,6-dimethyl - 2,5 - endoxy - 1,4 - dithian; (2) methyl ethyl ketone is reacted with ammonia and powdered sulphur and the resulting 2,4,5-tri - methyl - 2 - ethyl - thiazoline - D  - 3,4 is isolated and hydrolysed in 10% aqueous acetic acid to yield 2-mercapto-butanone-3; (3) di-n-propyl ketone and sulphur are reacted with NH3 in boiling benzol and the resulting 2,2,4 - tri - n - propyl - 5 - ethyl - thiazoline is isolated and hydrolysed as in (2) yielding 3-mercapto-heptanone-4.
Patent GB-220080-A (GB)
Title: Improvements in artists oil, guache or tempera brushes
IPC: A45B3/12
Filed: 1923-05-12
Abstract: 220,080. Brown, M. V. May 12, 1923. Spatulas.-A tool for use as an artist's brush or palette knife comprises a head of india-rubber in the form of a tongue or flap which is secured to a handle. The head may be chisel-shaped, Fig. 1, with the narrow sides parallel to, or inclined towards each other, pointed. Fig. 7, with the faces rounded from edge to edge, rounded and tapering, Fig. 10, or of semi-oval form, Fig. 4, either concave or convex in longitudinal section. Speeifications 23965/98, 10825/10, and 7396/14, [all in Class 19, Brushing &c.], are referred to.
Patent GB-552399-A (GB)
Title: Process and apparatus for separating fragmentary materials
IPC: B03B13/00
Filed: 1941-10-02
Abstract: 552,399. Wet separating. RAKOWSKY, V. Oct. 2, 1941, No. 12759. Convention date, Oct. 21, 1940. [Class 82 (ii)] A process of separating solid materials of different specific gravities in a suspension of intermediate specific gravity comprises flowing the suspension horizontally through the separating tank and maintaining a differential between the specific gravities of the suspension at different levels by controlling the rate of flow. In the apparatus shown the suspension is introduced through a shoot 6 and the solids through a shoot 9, overflowing suspension being removed along with the lightest solids through a channel 7. The heaviest solids are removed by scrapers 2<SP>1</SP> and intermediate solids along with some of the suspension through a vertically and longitudinally adjustable overflow 8 having a telescopic or swivelling inlet 8", and to which air is also admitted. Baffles 23, 24, a water inlet 25 and a water outlet 26 are also provided. The separated solids are washed, and the recovered suspension is reconditioned for reuse. In modifications the separating tank may be of uniform depth except at the inlet end or throughout.
Patent GB-568515-A (GB)
Title: Improvements in or relating to spades, forks and like tools
IPC: A01B1/02
Filed: 1943-09-21
Abstract: 568,515. Spade &c. handles. BAUGH, E. B. Sept. 21,1943, No. 12782. [Class 61 (i)] A spade &c. is provided with an auxiliary handle B in addition to the usual handle A, the handle B being pivoted at E to a bracket D and adapted to be secured in a number of positions by a pin passed through holes C.
Patent GB-601988-A (GB)
Title: Hair waving device
IPC: A45D2/38
Filed: 1945-05-23
Abstract: 601,988. Hair-waving appliances. GRAHAM, V. S. May 23, 1945, No. 12851. [Class 131] A hair-waving device comprises a pair of nested arcuate combs 10, 11 spaced by teeth 17, 18. As shown the comb 10 has sharp ridges 13 and shallow depressions 14 while the comb 11 has shallow ridges 15 and sharp depressions 16. The combs are spaced by teeth 17 on the depressions of comb 10 and teeth 18 on the ridges of comb 11. The hair is clamped between the combs which are then moved longitudinally relatively to one another to impart a horizontal wave. The clamping means comprises at one end pins 25 with heads 26 on comb 10 adapted to be forced through slots 24 in comb 11 thus providing a releasable pivot and at the other end a similar pin and slot connection 28, 27. Ventilation holes 30, 21 are provided, the latter being formed by pressing the teeth 17, 18 out of the comb, and a straight extension at the forward edge of comb 10 ensures that a portion of the hair is free immediately adjacent the head.
Patent GB-365916-A (GB)
Title: Fastenings for metal roofing and like sheets
IPC: E04D3/36
Filed: 1931-05-01
Abstract: 365,916. Fastening roofing and like sheets. WIDMAN, J., 5702, South Broadway, Los Angeles, U.S.A. May 1, 1931, No. 12886. [Class 89 (i).] Metal roofing sheets 11, Fig. 5, are secured to steelwork 10 by rivets 13, which are fastened to the steelwork by a wire tail 16 fixed to the rivet head by closing over the edges of a groove 15, Figs. 8 and 9, or by twisting the wire around the shank, Fig. 10. The rivets are first fastened to the steelwork, and the sheets laid thereon and hammered so-that the rivet shanks punch their holes. The shanks are preferably tapered, and, a watertight.joint is obtained by riveting the shank over a washer 19.
Patent GB-1075586-A (GB)
Title: Improvements relating to hydro-catalytic cracking
Inventor: TUPMAN KENNETH
IPC: C10G47/08
Filed: 1965-03-26
Abstract: A single stage process for the production of middle distillate from wax distillate comprises contacting a wax distillate feedstock having a nitrogen content of at least 350 p.p.m. and a sulphur content of at least 1% by weight with a catalyst comprising a Group VIa and one or more iron group metal hydrogenating components supported on a base of alumina combined with either 5 to 25% by weight of total catalyst of silica or boria or 2 to 10% by weight of total catalyst of fluorine at a temperature of from 720 DEG  to 860 DEG  F., a total pressure of from 1200 to 2500 p.s.i.g., a space velocity of 0.4 to 2.5 v.v.hr. and a gas rate of 4000 to 15,000 SCF/B of hydrogen, these conditions being adjusted to maintain a conversion within the range of 20 to 80% by volume, and separating the product into a middle distillate product and a wax distillate product, there being no recycle of the wax distillate product.  The sulphur and nitrogen content of the wax distillate product is reduced.  A suitable catalyst comprises molybdenum oxide 5 to 40%, iron group metals (e.g. cobalt and nickel 1 to 15% on alumina-silica or alumina-boria containing 15-25% silica or boria.
Patent GB-403284-A (GB)
Title: Improvements in or relating to shock absorbers
IPC: F16F9/26
Filed: 1933-05-03
Abstract: 403,284. Shock-absorbers. STEVENS, A. H., 5, Quality Court, Chancery Lane, London.-(Delco Products Corporation; 329, East 1st Street, Dayton, Ohio, U.S.A.). May 3, 1933, No. 12921. [Class 108 (iii).] In a vehicle hydraulic shock-absorber comprising a cylinder 27 in which a double-ended piston 41 is reciprocated by vehicle spring movements the cylinder-end chambers 43, 44 are connected by two ducts 55, 57, fluid flowing from the chamber 43 through the duct 55 on compression of the vehicle springs and from the chamber 44 through the duct 57 on rebound of the springs and being governed (a) on minor shocks by a spring-pressed valve 72 or 102 which controls the flow through passages 74, 79, 96, 80 or 104, 108, 106, 110, (b) on sufficiently great shocks by an inertia mass controlled sleeve-valve 86 or 115 interposed between the passages 79, 80 or 108, 110, and (c) on excessive shocks by a spring-pressed valve 59 or 61. A guided mass 92 partly supported by an adjustable spring 89, is secured to the sleeve-valve 86 and normally abuts the lower part 93 of a chamber 85 so that on downward accelerative movement of the vehicle frame the sleeve-valve 86 due to the inertia of the mass 92 does not move so that the sidepassages 79, 80 are thereby closed. On upward accelerative movement of the vehicle frame, a guided mass 116 secured to the sleeve-valve 115 and normally pulled by an adjustable spring 117 against the upper portion of the chamber 85, closes the side-passages 108, 110. Replenishing valves 50 on the piston 41 are connected with a fluid reservoir in the shock-absorber casing 20.
Patent GB-118881-A (GB)
Title: Automatic Safety Shutters for Kinematograph Apparatus or Machines.
Inventor: MARSHALL ALFRED HENRY
IPC: G03B21/18
Filed: 1917-09-10
Abstract: 118,881. Marshall, A. H. Sept. 10, 1917. Kinematograph apparatus. - Relates to safety shutters for use in kinematograph apparatus, of the kind in which, when the film breaks or runs out, the shutter falls and cuts off the light and at the same time breaks the circuit of the driving- motor and stops the machine. An opening in a plate 1 through which the light passes is closed on either side by shutters sliding in guides 2 and carrying rigid arms 3, 4, one carrying a roller 5 and the other connected by a link 11 and lever 10 to a roller 6, both rollers engaging the film F so that normally the shutters are raised, falling, however, if the film breaks or runs out. At the end of its fall, one shutter strikes the arm of a contact lever on a switch 12 and breaks the circuit of the driving electromotor. The shutters may be hinged above the opening.
Patent GB-1195171-A (GB)
Title: Improvements in Lock for Turbomachinery Blades.
IPC: F01D5/30
Filed: 1968-03-18
Abstract: 1,195,171. Blade fixing. GENERAL ELECTRIC CO. March 18, 1968 [Sept. 12, 1967], No.12983/68. Heading F1T. Each blade 22 is locked in position in a transverse slot 20 across the periphery of a compressor or like rotor 18 by means of a locking arrangement comprising a retainer 26 and a keeper 28. The retainer 26 is formed by a bridge 30 having inwardly and outwardly extending legs 32, 34 at its opposite ends. Prior to the insertion of the blade root 24 in its mounting slot 20, the bridge 30 of the retainer is introduced in to a groove 38 in the base of the root 24, the groove being of sufficient depth to enable the legs 32 of the retainer to clear the base of slot 20. After the root 24 and retainer 26 have been introduced in to the slot, the retainer is moved radially inwardly so that legs 32 engage the faces of rotor rim 16 while legs 34 remain in engagement with the ends of root 24. The unbent end of the keeper 28 is then inserted into root groove 38 and a co-operating groove 37 in the retainer 26. When the keeper is fully home its unbent end is bent up at 40 to lock the retainer in position.
Patent GB-956909-A (GB)
Title: Electrical inverter
IPC: H02M3/338
Filed: 1962-04-04
Abstract: 956,909. Transistor oscillation generators. WESTINGHOUSE ELECTRIC CORPORATION. April 4, 1962 [April 20, 1961], No. 12987/62. Heading H3T. In an inverter circuit comprising at least two transistors which are rendered alternately conductive so as to convert direct-current energy into alternating-current energy and supply it to a load, and a control transformer having a primary winding energized by the output alter- ' nating current and connected in series with a frequency-determining circuit to determine the frequency of said alternating current and two secondary windings which are coupled to respective control electrodes of the transistors to render them alternately conductive and maintain the circuit in a state of continuous oscillation, the control transformer is provided with a third secondary winding which is coupled to a network including a rectifying diode which reflects different resistances into the primary winding of the transformer in alternate halfcycles of the output waveform, and is so chosen as to equalize differences in load imposed by the feed-back windings in alternate half-cycles and thus maintain alternate half-cycles of equal length. In the circuit illustrated in which the frequency of oscillation is determined by the series-tuned circuit 36, 38, differences in load imposed by the secondary windings in alternate half-cycles tend to make alternate half-cycles of oscillation of different durations. The loads in alternate half-cycles are adjusted to be equal by setting change-over switch 50 appropriately and adjusting resistor 52. Alternatively the circuit 51 may be replaced by an adjustable circuit as shown in Fig. 2. Specifications 869,454 and 882,126 are referred to.