baber/WOPTO huggingface dataset:
Patent GB-1207764-A (GB)
Title: Automatic flight control mechanism
IPC: G05D1/08
Filed: 1968-07-31
Abstract: 1,207,764. Automatic aircraft flight control system. UNITED AIRCRAFT CORP. 31 July, 1968 [11 Sept., 1967], No. 36477/68. Heading B7G. [Also in Division G3] An aircraft control mechanism, illustrated in use for yaw control, comprises a linkage 10 connecting the pilot's control pedals to a bellcrank 12 mounted on the airframe for rotation at 18 and 20, the bellcrank being connected through rods 24, servoactuator 26 and rod 28 to the aircraft yaw control mechanism. The servoactuator 26, which for weight considerations is an electrical type, can be operated in response to control signals from automatic control mechanisms such as a yaw rate gyro, and to prevent the automatic motion of the servoactuator 26 affecting the pilot's controls through the bellcrank 12 and linkage 10 a rotary clutch 30 of the magnetic dry particle type is placed between the bellcrank shaft 16 and the airframe. Rate gyro signals pass via a demodulator and a high-pass filter 48 to a summing amplifier 50, then a preamplifier and an amplifier 52, 54 around which there is a feedback loop which may include lag/lead network 72 to the actuator, whose output is shown at 58. The clutch 30 is operated by signals from the high-pass filter 48, and for automatic control signals of all magnitudes the clutch holds shaft 16 fixed. The electrical linkage between clutch 30 and servoactuator 26 includes the high-pass filter 48 to eliminate steady rate signals and thus to prevent the clutch looking shaft 16 when the servoactuator is moved in response to the pilot's controls. By design of the servoactuator, or by saturation of the amplification 74, 76 linking the clutch and the servoactuator, an upper limit is imposed on the locking forces produced by the clutch 30, as shown at 58, 78, so that at all times the pilot may override the automatic control. An embodiment is described in which the servoactuator is in parallel with the pilot's control, and a linear slip clutch is used. The invention may be used to control pitch and roll as well as yaw; an automatic heading command signal, for example from a gyro compass 86, may be used to operate the servoactuator via the summing amplifier 50, in which case switching on the gyro-compass also energizes the clutch 30 to its maximum looking power to feed the heading signals to the attitude control mechanisms.
Patent GB-320279-A (GB)
Title: Improvements in heat exchangers
IPC: F28D9/00
Filed: 1928-12-11
Abstract: 320,279. Heenan & Froude, Ltd., and Walker, G. H. Dec. 11, 1928. Plate apparatus. - In a heat exchanger in which a convoluted sheet A forms a heat-transmitting partition between compartments A<1>, A<2> formed by the convolutions and the outside walls of a containing chamber, ports as at c, e serve to connect the compartments on each side of the sheet A in series. In a modification, Fig. 7, the convoluted sheet A fills an annulus, the ports g<1>, g<2> connecting the convolutions in series being formed in the annular rings at top and bottom.
Patent GB-359273-A (GB)
Title: Manufacture of sulphur dyestuffs
IPC: C09B49/10
Filed: 1930-12-03
Abstract: Sulphuretted dyes are prepared by treating starting materials customarily employed for preparing sulphur dyestuffs (with the exception of azines) with sulphurizing agents in the presence of a compound of molybdenum, tungsten and uranium or of a mixture of such compounds.  These additions may in part be replaced by other metallic compounds customarily employed for the preparation of sulphur dyes, for example, copper compounds.  Suitable starting materials are phenols, nitro- and aminophenols, indophenols and leucoindophenols; the dyestuffs obtained dye in brighter shades than when prepared in the known manner, and in some cases a change of shade results.  In examples (1) the leucoindophenol prepared by condensing a -naphthylamine with p-aminophenol and reduction of p  product with sodium sulphide, is sulphurized in the presence of ammonium molybdate; the product dyes bright blueish-green shades: (2) the leucoindophenol derived from 1-tolylamino-naphthalene-8-sulphonic acid and p-aminophenol followed by reduction of the product with sodium sulphide, is sulphurized in the presence of ammonium molybdate; the product dyes bright blueishgreen shades; the ammonium molybdate may be replaced in part by copper sulphate, or wholly by sodium tungstate: (3) Cresol is sulphurized in presence of ammonium molybdate; the product dyes brown shades.  The Specification as open to inspection under Sect. 91 (3) (a) relates in addition to the sulphurization of materials (with the exception of azines) in the presence of a compound of vanadium, antimony or phosphorus, with or not the further addition of other metallic compounds customarily employed in the preparation of sulphur dyes; this subject-matter does not appear in the Specification as accepted.
Patent GB-1083752-A (GB)
Title: Herbicidal compositions and methods
IPC: A01N43/54
Filed: 1965-08-25
Abstract: A herbicidal composition comprises a trichlorobenzyloxy alkanol and a substituted uracil of the formula:  <FORM:1083752/A5-A6/1> in which R1 is a secondary or tertiary alkyl radical having from 3 to 8 carbon atoms, R2 is an alkyl radical having from 1 to 4 carbon atoms and X is bromine or chlorine, the weight ratio of trichlorobenzyloxyalkanol to uracil being 0.5:1 to 10:1.  The composition may contain other herbicides, e.g. 2,4-D or a salt or ester thereof.  The composition may contain surface-active agents and stickers and may be in solid or liquid form.
Patent GB-364291-A (GB)
Title: Improvements in trestles
IPC: D06F45/00
Filed: 1930-12-04
Abstract: 364,291. Trestles. GREENSLADE, A. A., The Larches, Westbury-on-Trym, and GREENSLADE, Ltd., E. A. & W., Orb Works, Thomas Street, both in Bristol. Dec. 4, 1930, No. 36646. [Class 52 (v).] A folding trestle consists of a pair of front legs a fixed to a cross-bar c on which a pair of rear legs d are pivotally mounted, the cross-bar i, to support a wringing machine &c. being gripped between brackets f carried by the legs. The brackets may have pins h to enter holes in the cross-bar i. In a modification the brackets are formed of sheet metal.
Patent GB-439917-A (GB)
Title: Improvements in or relating to electric storage batteries
IPC: H01M10/18
Filed: 1934-12-21
Abstract: 439,917. Batteries. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Dec. 21, 1934, No. 36721. Convention date, March 14. [Class 53] An accumulator has bipolar plates made of graphite or of a nonconducting material mixed with graphite, the active material being deposited on the plates from the electrolyte during the charging process. The non- conducting material may consist of synthetic resin or ceramic material and the electrolyte may consist of a solution of fluoborate, fluosilicate or fluozirconate of lead. The plates may be stacked together with intervening rings of rubber, ebonite, glass or synthetic resin which may be provided with apertures for the introduction of the electrotyte. Ceramic rings may also be used with plates made of a mixture of graphite and ceramic material and the complete pile may be baked and impregnated with paraffin, asphalt or synthetic resin. After the electrolyte has been introduced through the apertures in the rings the apertures are plugged and the whole accumulator immersed in an insulating-material.
Patent GB-992405-A (GB)
Title: Improvements in or relating to hydraulic jacks
IPC: F16J10/02
Filed: 1961-10-13
Abstract: 992,405. Hydraulic apparatus. CHRISTIANI & NIELSEN Ltd., and G. PERSICKE. Oct. 15, 1962 [Oct. 13, 1961], No. 36886/61. Heading F1P. [Also in Division F2] An hydraulic jack comprises an annular piston 13 slidable in an annular cylinder 14 and sealed therein by inner and outer U-section sealing rings 23, -24 expanded by the pressure fluid in the cylinder chamber 18. The sealing rings are secured to the piston by a cover plate 26 fixed to a flange 22 on the piston and having holes 28 for the passage of pressure fluid to the rings. The cylinder has a fluid inlet 19 and a central boss 17, Fig. 4a. In the. embodiment shown in Fig. 2, which is particularly suitable for prestressing a reinforcing rod of a concrete structure, the boss 17 is hollow and has a duct 280 leading from a port 29 which is uncovered by the piston at the outer end of its stroke to thereby relieve the pressure and prevent overload and the rod to be stressed passes through a bore 31 in the piston and is held in conical segments 33 engaging a tapered bore 32 in the boss 17. The gripping action of the segments 33 on the prestressed rod may be augmented at the outer end of the piston stroke by the pressure fluid passing through the duct 280 acting on pistons 37 in cylinders 36 in a plate 35 screwed into the boss 17, the pistons being urged axially against the ends of the segments. In a further embodiment, Fig. 8, the segments 33 engage a tapered bore 48 in a plate 43 between the cylinder and an element 1 and minor pistons 50 secured to the flange 22 move in bores 49 in the cylinder head 15 and control ducts 53 communicating with cylinders 54 so that when the ducts 53 are uncovered during outward movement of the piston 13, pistons 56 in cylinders 54 are forced outwards by pressure fluid against the segments 33 to press the latter into tight engagement with the prestressed rod 4.
Patent GB-1154971-A (GB)
Title: A Device for Retarding and Causing the Overlapping of Moving Sheets of Paper or the like
IPC: B65H29/68
Filed: 1966-08-17
Abstract: 1,154,971. Sheet delivering apparatus. E. C. H. WILL. 17 Aug., 1966 [17 Sept., 1965], No. 36904/66. Heading B8R. Sheets, which are delivered from a cutting machine (not shown) by a high-speed endless belt conveyer 10, 11 to a stack (not shown), are retarded prior to stacking, to prevent damage to their leading edges, by a slow speed conveyer 19, whose endless perforated belt which is trained over a suction - actuated cylinder acts on the trailing edges of the sheets to cause them to slow down and overlap. The endless belt of conveyer 19 which forms a wedge-shaped, sheet receiving section with the upper belt 10 is disposed below the plane of the lower belt 11 so that the leading edges of successive sheets, which are delivered at a high speed, adhere to the upper belt 10 without contacting the preceding retarded sheets. Contact is also prevented by a jet nozzle 26 acting on the leading edges and on the undersurface of the sheets. To retard the sheets and overcome the action of the jet nozzle 26 a finger 32 which rotates in synchronism with the trailing edges of the sheets forces the trailing edges of the sheets to the suction-actuated retarding section of the conveyer, whereby the suction applied through a port 28 of rotatable cylinder 22 to the suction cylinder 21 slows down the successive sheets which are overlapped by respective following sheets advanced by the high-speed conveyer 10, 11. The upper belt 10 is trained over guide rollers 13 to 15 of which the guide roller 14 is movable in a vertical plane so as to adjust the run of conveyer belt 10 which is passed around a guide roller movable in the horizontal plane to suit the length of the sheets. The slow running conveyer belt 18 is coupled to the upper conveyer belt 10 for simultaneous adjustment.
Patent GB-761223-A (GB)
Title: Improved fuel compositions
IPC: C10L1/30
Filed: 1954-12-23
Abstract: A fuel composition for internal combustion engines comprises a gasoline containing from 0.001 to 2 weight per cent of a fluorinated alkane, arylalkane, haloalkane or haloarylalkane, the fluorine compound having at least 14 carbon atoms and boiling above 100 DEG C. at 1 mm. Hg. and melting below 100 DEG C.  The fluorine compound preferably has at least 22 carbon atoms, and may also contain bromine and chlorine atoms, in which case it is preferred that there are at least three fluorine atoms for each other halogen atom.  The fluorine compound may be one obtained by fluorinating a petroleum fraction boiling in the kerosene boiling range or higher, such as by treating with cobalt trifluoride. Other fluorine compounds are those obtained by polymerization and saturation of low molecular weight fluorine-containing alkanes, arylalkanes, haloalkanes and haloaryl alkanes, and by fluorination of high molecular weight hydrocarbons and halohydrocarbons. Compounds that may be polymerized and then saturated, e.g. by fluorination, are trifluoromonochloroethylene, tetrafluoroethylene, 1 - chloro - 3 - bromo phenyl trifluoroethylene, 2, 2-difluoro-1, 1-dichloroethylene, hexafluoropropylene and octafluorobutane.  In an example a gasoline composition comprises a blend of C4 hydrocarbons and straight run, thermally cracked and catalytically cracked naphthas, with a boiling range of 101 to 404 DEG F., containing lead tetraethyl and ethylene dibromide and dichloride scavengers, to which is added a polymer of trifluoromonochloroethylene having a molecular weight of 1200 and boiling at 210 DEG C. at 1 mm. Hg.
Patent GB-435838-A (GB)
Title: Improvements relating to the manufacture of non-poisonous fuel gas
IPC: C10K3/04
Filed: 1934-12-28
Abstract: In the production of non-poisonous fuel gas by the catalysis of carbon monoxide with steam or water vapour impurities, such as benzene, contained in the gases to be treated or formed during the catalysis are obtained in a purified form, by passing the gas over an adsorbing substance, such as active carbon, after its passage over the catalytic material.  The adsorption treatment also removes impurities from the gases which poison the nickel catalyst in the methane catalysis which may follow the water-vapour catalysis. Hydrogen sulphide removed by the adsorbent may be oxidized to water and sulphur; heavy hydrocarbons, such as indene, styrol, cyclo-pentadiene remain on the carbon; and benzene and its homologues may be removed in a separate layer of the carbon. Specifications 352,864, 356,838, and 367,577 are referred to.
Patent GB-1268865-A (GB)
Title: THE PREPARATION OF D-THREO-1-p-METHYLSULFONYLPHENYL-2-DICHLOROACETAMIDOPROPANE-1,3-DIOL
Inventor: AKIYAMA HISAO
IPC: A01N41/10
Filed: 1969-07-24
Abstract: 1,268,865. Process for thiamphenicol and related intermediates. SUMITOMO CHEMICAL CO. Ltd. 24 July, 1969, No. 37320/69. Headings C2B and C2C. The invention comprises a process for making microbiocidal thiamphenicol by the following steps: (a) 2 moles of p-methylsulphonylbenzaldehyde (I) are reacted with 1 mole of an alkali metal salt of glycine in alcoholic solvent in the presence of alkali metal carbonate, the mixture is acidified to precipitate unreacted I (remove by filtration) and the filtrate is neutralized to give threorich-#-p-methylsulphonylphenylserine (II), (b) II is esterified to give optically inactive ester (III) thereof, (c) III is contacted with d-tartaric acid in a solvent to precipitate crystals of D- form ester-d-tartaric acid salt which are separated from a mother liquor containing the L-form and the D-form salt is optionally contacted with an alkali to give the D-form ester (IV), (d) IV or the d-tartaric acid salt thereof is contacted with sodium borohydride in alcohol in the presence of calcium chloride to give the calcium salt of D- threo - 1 - p - methylsulphonylphenyl - 2 - amino- 1,3-propane-diol-boron complex (V), (e) V is contacted with an alkali metal cyanide and trichloroacetaldehyde to give thiamphenicol, and (f) the mother liquor from (c), containing the L- form salt or an L-form threo-#-p-methylsulphonylphenylserine ester (obtained by adding base to the liquor), is contacted with water and alkali or acid to give an aqueous solution containing L-threo-#-p-methylsulphonylphenylserine, thereafter the pH is adjusted to 8 to 11, the solution heated to 30‹ to 150‹ C., cooled, the pH adjusted to 3 to 4 to precipitate optically inactive threo-#-p-methylsulphonylphenylserine which is recycled to the esterification step (b). Other processes for making thiamphenicol are steps (d) and (e) taken together or steps (b), (c), (d) and (e) taken together.
Patent GB-1066501-A (GB)
Title: Improvements in or relating to optical objectives of variable equivalent focal length
Inventor: COOK GORDON HENRY
IPC: G02B15/14
Filed: 1962-10-04
Abstract: 1,066,501. Zoom lenses. RANK PRECISION INDUSTRIES Ltd., [trading as RANK ORGANISATION RANK TAYLOR HOBSON DIVISION]. Sept. 30, 1963 [Oct. 4, 1962], No. 37543/62. Heading G2J. The objective, which is corrected for spherical and chromatic aberrations, coma, astigmatism, field curvature and distortion, comprises a stationary front member LA, a movable assembly LB, LC, and a stationary rear member LD wherein the front member has (a) a front portion LA1 which is stationary during focusing, approximately afocal (i.e. having an equivalent focal length numerically greater than 4fA where fA is the equivalent focal length of the complete member LA for an infinitely distant object) and includes a divergent element and a convergent element and (b) a rear portion LA2 which alone is moved in order to focus at different object distances, is convergent and has an equivalent focal length between 0À75 fA and 1À25 fA e.g. approximately 0À960 fA. Portion LA1 may be slightly divergent and have a focal length approximately equal to 7 fA. Members LB, LC may be divergent as shown and constructed similarly to those described in Specification 1, 64, 323. LB may be divergent, Fig. 5 (not shown) and LC convergent. The rear fixed convergent member LD may take various forms and have a surface such as R23 which is aspheric. A supplementary achromatic doublet may be provided interchangeably behind LD to vary the entire range of equivalent focal lengths by a fixed ratio e.g. a range of Fo minimum to 10 Fo without such a doublet is changed to 1À5 Fo to 15 Fo with one example of doublet Fig. 6 (not shown) or 2 Fo to 20 Fo with another example, Fig. 7 (not shown). Optical data are given for five examples of complete objective.
Patent GB-1317203-A (GB)
Title: Propargyl esters and process for the manufacture thereof
Inventor: CHODNEKAR M
IPC: C07D303/24
Filed: 1970-08-04
Abstract: 1317203 Propargyl esters F HOFFMANNLA ROCHE & CO AG 4 Aug 1970 [5 Aug 1969] 37563/70 Heading C2C The invention comprises propargyl esters of formula in which R 1  is ethyl or methyl; R 2  and R 3  are hydrogen, methyl or ethyl; R 4  is hydrogen or methyl; R 5  and R 6  are hydrogen or C 1 -C 6  alkyl; R 7  and R 8  are hydrogen, methyl or ethyl; R 9  is hydrogen, C 1 -C 6  alkyl, C 2 -C 6  alkenyl, C 2 -C 6  alkynyl or (C 6 -C 12  aryloxy)-(C 1 -C 6  alkyl); A is hydroxyl, B is chlorine, bromine or iodine or A and B together represent an oxygen or sulphur bridge; and m and n are 0 or 1. Those compounds in which A and B together represent an oxygen bridge may be prepared by epoxidizing (for example, with a per-acid) a compound of general formula Those compounds in which B is halogen and A is hydroxyl may be prepared by hydroxyhalogenating the latter compound with an appropriate N-halo-succinimide. Those compounds in which A and B represent a sulphur bridge may be obtained by those compounds in which A and B together are oxygen or A is hydroxyl and B is halogen with thiourea and treating the resulting isothiouronium salt with a base. Alternatively, an epoxide compound may be obtained by treating a corresponding halohydrin with an alkali metal hydroxide. Those compounds in which A and B form an oxygen or sulphur bridge may also be prepared by reacting a compound of formula in which E is oxygen or sulphur with a phosphine oxide of formula (in which R is C 1 -C 6  alkyl or phenyl optionally substituted by C 1 -C 6  alkoxy or halogen) in an inert solvent in the presence of a base. The compounds of the invention may be used as active ingredients in pest-control compositions.
Patent GB-304588-A (GB)
Title: Improvements in steam generators
IPC: F22B27/14
Filed: 1928-12-19
Abstract: 304,588. Vuia, T., and Yvonneau, E. Jan. 21, 1928, [Convention date]. Instantaneous or flash generators for producing high pressure superheated steam comprise a central ignition chamber 13 formed by a rehactory cylinder 18, a series of annular combustion chambers 14 - - 17 and a series of annular water chambers 1 - - 3, each preferably having a central partition providing a double pass for the water. The various chambers may have longitudinal or helicoidal blades on one or both sides. A mixture of atomized liquid or pulverized solid fuel and air is supplied to the central chamber and ignited as by an ignition plug 21, combustion taking place in chamber 14 and the products passing through chambers 15, 16, 17 to an outlet 22. Water is supplied through an inlet 23 and passes through chambers 1, 2, 3 which are interconnected by pipes 24, 25. Or the water may circulate in the order 1, 3, 2. Superheated steam passes off through an outlet 26.
Patent GB-1187862-A (GB)
Title: Air Flow Surface Cleaning Apparatus for Roads and like Surfaces.
Inventor: YOUNG BERNARD WILLIAM
IPC: E01H1/08
Filed: 1967-08-16
Abstract: 1,187,862. Centrifugal separators. B. W. YOUNG. 16 Aug., 1967 [30 Aug., 1966], No. 37717/67. Heading B2P. [Also in Division El] A pneumatic collector for road cleaning purposes in which the air is recirculated by a blower B is provided with air filter means comprising a baffle 86, vibrating strips of plastics 84 suspended at 85, a screen 92 and a cylindrical, horizontally disposed whirl chamber 89 arranged in series as shown. The air entrance opening and the solids discharge opening in the whirl chamber 89 are constituted by tangential slits 94, 95 respectively, Fig. 4, extending the whole length of the chamber. Solids discharged through the slit 95 are intercepted by a baffle 96 which deflects them downwardly towards a collection bin.
Patent GB-1085389-A (GB)
Title: Air distribution devices
Inventor: AVERILL EUGENE FORREST
IPC: F24F13/068
Filed: 1965-09-03
Abstract: 1,085,389. Ventilators. TITUS MANUFACTURING CORPORATION. Sept. 3. 1965, No. 37739/65. Heading F4V. An air diffuser the outlet of which is covered by a perforated plate 23 includes a deflector 25 formed of strips inclined to the plate 23 to provide a lateral discharge pattern. As illustrated, the deflector covers a part of the area of the plate 23 and is formed of four quadrants 26-29, Fig. 1 (not shown), of expanded metal or plastics which may be orientated to give a one, two, three or four-way discharge pattern. Locating means may be provided at the junction of the four quadrants, Figs. 5 and 6 (not shown), or for each quadrant individually, Fig. 7 (not shown). In an alternative embodiment, Figs. 11 and 12 (not shown), the perforated plate is held in a removable frame 59 which has spring clips 64 locating the sections of the deflector. The deflector may cover the whole of the perforated outlet plate. Preferred dimensions are disclosed.