baber/WOPTO huggingface dataset:
Patent GB-765488-A (GB)
Title: Improvements in or relating to vinyl chloride resins for application as solvent solutions
IPC: C08F214/06
Filed: 1954-09-06
Abstract: A copolymer comprises (1) 55-75 per cent of vinyl chloride, (2) 14-35 per cent of a dihydrocarbon ester of maleic, fumaric or chloromaleic acid in which the hydrocarbon group in the ester contains 1 to 10 atoms, (3) 5-10 per cent of a monohydrocarbon monohydrogen ester of maleic, fumaric or chloromaleic acid in which the hydrocarbon group in the ester contains 1 to 10 carbon atoms, and (4) 1.5 to 6.5 per cent of trichloroethylene, the percentages being based on the total weight of the copolymer.  The diester may be dimethyl, diethyl, di-n-butyl, di-n-propyl, diisopropyl, diisobutyl, disecondary butyl, di-(2-ethylhexyl), di-(cyclohexyl) or dibenzyl maleate, dimethyl or di-n-butyl fumarate or a mixture containing approximately equal proportions of di-n-butyl maleate and di-n-butyl fumarate.  The half-ester may be methyl, n-butyl, n-propyl, benzyl or cyclohexyl hydrogen maleate or n-butyl hydrogen fumarate.  The copolymers may be prepared in solution or in aqueous emulsion, but are preferably prepared in aqueous suspension in the presence of a suspending agent such as gelatin, polyvinyl alcohol, polyacrylic acid, polymaleic acid and methyl cellulose, and in the presence of a catalyst such as benzoyl peroxide, perbenzoic acid, p-chlorobenzyl peroxide and t.-butyl hydroperoxide.  The copolymers are soluble in benzene, toluene, xylene and methyl ethyl ketone, and the solutions, which may also contain an alkyd resin, may be used to deposit coatings on metal and other surfaces.
Patent GB-1114810-A (GB)
Title: An improved control valve device for an hydraulic work circuit
IPC: F15B9/08
Filed: 1966-06-10
Abstract: 1,114,810. Valves. ROBERT BOSCH G.m.b.H. 10 June, 1966 [12 June, 1965], No. 25901/66. Heading F2V. In the position shown, hydraulic fluid from a pressure inlet 4 is returned to a drain chamber 6 through ports 25, in a mechanically actuated pilot piston valve 9, registering with ports 22 in an automatically acting main piston valve 18, and through the hollow interior of the latter. The fluid enters a control chamber 17 beneath the valve 18 through an annular passage 14, holding it open. On movement of the pilot valve to the left the chamber 17 is vented to a second drain chamber 8 through relatively large passages 15 and a restricted passage 16. The main valve closes rapidly at first, under a spring 21, and then more slowly after the passages 15 are shut off. A chamfered portion 24 of the main valve co-operates with the ports 25 near the closing position, so that controlled pressure is applied through an outlet 5 to a work piston (not shown). The work piston, when thus operated, moves a control linkage away from the pilot valve. In a position of the work piston selected by the setting of a hand lever 10, the valves have returned to the neutral position shown. Continued movement to the right allowed by the control linkage causes a valve (not shown) to open and exhaust the work cylinder, and the device is then: returned to neutral. A check valve (not shown) in line 5 holds the work piston when the device is in neutral.
Patent GB-871107-A (GB)
Title: Extraction of thorium and lanthanons from monazite
Inventor: KEMP WILLIAM PALMER
IPC: C01F17/00
Filed: 1956-08-24
Abstract: The sulphates of thorium and the rare earth elements (57-71) are obtained as a precipitate by treating monazite with sulphuric acid, extracting the resulting mass with water, filtering off insoluble material and adding alkali metal and chloride ions.  The precipitate thus obtained is washed to remove impurities.  The chloride ions may be introduced in the form of hydrochloric acid or as an alkali metal chloride, preferably those of sodium and potassium, and especially as sodium chloride.  The solution preferably contains at least 200 g.p.l. of alkali metal and chloride ions, especially between 200 and 400 g.p.l., when the concentration of the thorium and rare earth elements expressed as oxides is 50-60 g.p.l.  The initial filtered extract preferably has an acid content of more than 4.5 N.  It is advantageous to add a portion of the extract to the alkali metal chloride to form a slurry, and to add this slurry to the remainder of the extract. The precipitation of the sulphate is best carried out at about 60 DEG C.  The precipitate is then filtered off and washed with the minimum of alkali-metal chloride solution.  The thorium may be separated from the rare earth elements by treating the precipitate with caustic soda to convert the sulphate to the hydroxides.  The rare earth elements may then be dissolved out by careful treatment with mineral acids, leaving a thorium hydroxide precipitate.
Patent GB-1303402-A (GB)
IPC: F23G7/05
Filed: 1971-04-19
Abstract: 1303402 Incinerators IWANTANI SANGYO KK [trading as IWATANI SANGYO CO Ltd] 19 April 1971 [12 June 1970(2)] 25955/71 Heading F4B Waste oil or the like is burnt in an incinerator having a combustion chamber 2 with an inner water jacket 3 and an outer air jacket 4. The oil from an inlet 5A is stirred by vanes 12 carried by cylindrical radial arms 9 projecting from a central rotating cylinder 8. Air supplied by a fan 18 is fed to the cylinder 8 to provide primary and secondary air delivered downwardly from holes 10 and upwardly from holes 11 over the full length of the arms. Air from a fan 19 passes to the jacket 4 to provide a tertiary air supply from nozzles 15. The supply of combustion air is controlled in accordance with conditions in the combustion chamber as determined by a light projector and photoelectric diode, and the speed of rotation of the arms 9 is controlled in accordance with the temperature of the ash discharged from an inlet 14, or the temperature at the top of the combustion chamber.
Patent GB-712310-A (GB)
Title: Improvements in or relating to extrusion apparatus for plastic materials
IPC: B29C48/08
Filed: 1952-10-16
Abstract: 712,310. Extrusion machines. CIRKET, H. F. E. Oct. 16, 1952, No. 26001/52. Addition to 706,323. Class 87 (2) The die box claimed in the parent Specification is inclined to the horizontal and the longitudinal axis of the path of the extruded section slopes downwardly and is substantially rectilinear between the die aperture and the entry of the section into a bath of cooling liquid and aligned with the axis of the path of the section through the die. As shown, the die box 1, 2 is secured by an angle piece 6, 7 to the extrusion cylinder, but may be in line with the casing, the casing being tilted.
Patent GB-994756-A (GB)
Title: Improvements in or relating to flight training apparatus
Inventor: FLOWER MAURICE SHIRLEY
IPC: G09B9/30
Filed: 1963-07-01
Abstract: 994,756. Automatic position control. COMMUNICATIONS PATENTS Ltd. July 1, 1963, No. 26007/63. Heading G3R. [Also in Division B7] In flight training apparatus in which the view from an aircraft is simulated by a television camera 11 movable above a three dimensional model of the ground, the height of the camera above the model is kept constant when the "aircraft" moves along a "runway". Vertical movement of a feeler 45 when it is in contact with the model rotates a variable transformer device 19 whose output is compared with a reference voltage representative of the height of the pilot's view point in the relevant aircraft, and any difference is fed to a servo system (not described in detail) controlling the camera height. An additional feeler 42, having a width representative of wing span, also rotates the device 19 if it collides with an object. The feelers are carried by a mechanism pivoted at 14 which, by movement of a rod 16, tilts a prism 12 to introduce pitching motions. In the control system the camera position is defined by X and Y co-ordinate voltages and the runway by bias voltages. These are compared, and only when the result shows that the camera is within the limits of the runway does the automatic height control function. At other times, the output from the height detector 19 is connected to a circuit which simulates a crash when the feelers 42 or 45 are moved sufficiently; flight deck lights are extinguished and all instruments de-energized. The camera unit is given a slight upward movement to prevent damage to the model. Provision is made for the "aircraft" to be taxied off the runway into a parking area without triggering the crash circuit. The relay circuits for effecting these operations are described in detail.
Patent GB-708459-A (GB)
Title: Improvements in or relating to keybuttons for printing telegraphs, typewriters and the like
Inventor: MUNCK LESLIE STAMPE
IPC: B41J5/12
Filed: 1951-11-07
Abstract: 708,459. Typewriters &c. CREED & CO., Ltd. Nov. 7, 1951, No. 26059/51. Class 100 (4) Keys.-A key-button comprises a transparent moulded cap 5 united to a base 3 to enclose and seal a character disc 4 in a dust free manner. The cap may be moulded from polystyrene or methyl methacrylate and formed with an internally protruding lug to engage a recess in the disc and so prevent its rotation. When a polystyrene mounded cap is used it is united to the base 3 by applying industrial alcohol which acts as a solvent. Reference has been directed by the Comptroller to Specification 534,976.
Patent GB-1039041-A (GB)
Title: Improved safety device for a lift or hoist
IPC: B66B5/24
Filed: 1963-07-02
Abstract: 1,039,041. Lift cage catch gear. J. Mc- DOUGALL. June 22, 1964 [July 2, 1963], No. 26172/63. Heading B8L. Catch gear for a lift cage comprises a housing 8 secured to the cage and having a tapered interior surface conforming to the exterior surface of brake shoes 6, 7 which are adapted to surround a stationary rope 5 and which are urged upwardly by springs 10 acting on a plate 11 secured to the shoes. The plate 11 is connected by rods 12 to a plate 13 provided with an abutment 15. When the hoisting rope 2 is tensioned by the weight of the cage, a lever 14, which is pivoted on top of the cage and is connected by a chain 16 to a hanger 3 on the hoisting rope, engages the abutment 15 to force the plate 13 downwardly, thereby compressing the springs 10 and withdrawing the shoes 6, 7 partially from the housing 8. Wedges 17, 18, Fig. 3 (not shown), are secured to the housing 8 to spread the brake shoes as they move downwardly. When the hoisting rope 2 breaks, the springs 10 force the shoes into the housing thereby causing the shoes to grip the rope 5. An hydraulic shock-absorber, Fig. 2 (not shown), is interposed between the upper end of the rope 5 and its top anchorage and may be adapted to actuate a switch for initiating the switching-off and braking of the drive motor.
Patent GB-1186315-A (GB)
Title: Photographic Developer for Obtaining Colour Toned Positive Silver Prints
IPC: G03C5/305
Filed: 1968-05-31
Abstract: 1,186,315. Photographic silver halide developer. CHEMISCHE LABORATORIUM FRITZ-WALTER LANGE G.m.b.H. May 31, 1968 [June 1, 1967], No.26176/68. Heading G2C. A photographic silver halide developer giving a brown toned silver image contains hydroquinone and 0.01 - 1.0% of 3:4-diaminopyridine or a compound of the formula:- where R 1 , R 2 , R 3  and R 4  are each hydrogen, alkyl of C 1  - C 4 , hydroxyalkyl, aminoalkyl or alkoxyalkyl and X and Y are each hydrogen, hydroxyl or alkoxy. Other developing agents such as metal, 1-phenyl-pyrazolidone and 1-phenyl-3- amino-pyrazolidone may be present.
Patent GB-262420-A (GB)
Abstract: 262,420. Coster, J. de. Dec. 5, 1925, [Convention date]. Sparking-plugs are placed in shunt with a circuit containing a spark-gap and a condenser. A casing 1 encloses condenser plates and insulation. One side of the condenser is connected to the terminal 15 and thence to the plug casing by an elastic supporting member 16<1>. The other side of the condenser is separated from the inner end of the terminal 2 by a spark gap, the terminal 2 receiving current from a magneto and transmitting it to the sparking plug by a lead 17. In a modification the condenser is barrel-shaped, an axially-arranged lead passing through to the sparking plug. The condenser plates are wound around this lead, one set having a connection to a lateral terminal and thence to the plug casing; the other plate or plates being separated by a gap. from the conductive end of the barrel, this end being connected by a set screw to the central lead.
Patent GB-172148-A (GB)
Title: Improvements in or relating to oil burning furnace fronts
IPC: F23D11/00
Filed: 1920-09-13
Abstract: 172,148. Reid, J. Sept. 13, 1920. Liquid-fuel fittings.-The hollow front of an oil-fired furnace is fitted with an air deflector comprising, as shown in Fig. 2, an inwardlydirected ring 5 seated in the flame opening of the inner plate 1 and continued, integrally or otherwise, in the form of a hollow cone extending adjacent to the outer plate 7 and having air ports 19 which may be semi-spiral in shape. In the modification shown in Fig. 4, suitable for alteration to coal firing, the combined deflector 27 and hollow core 29 is secured in an opening formed in two pairs of plates bolted to the inner or back plate 24 each pair being bolted together by means of central vertical flanges. The upper enclosing or "shield" wall of the hollow port and the "flare" 51 are each made in halves, one bolted to the inner plate 24 and the other to the outer plate 54. The brickwork is formed with a central Venturi opening 65. In both modifications the usual openings, with access doors, are provided in the outer plate, and the oil-pipe sleeve is fitted . with the burner deflector 12 or 61 having air ports and vanes.
Patent GB-502909-A (GB)
Title: A box or container for storing and mixing powders and like materials
IPC: A45D33/00
Filed: 1937-09-28
Abstract: 502,909. Sieves. HEVES, T. Sept. 28, 1937, No. 26388. [Class 117] [Also in Group XVII] A container for storing and mixing face powder, powdered cosmetics or other powdered or like materials, has a storage space b for transparent envelopes containing, e.g. differently coloured face powders, a mixing chamber d, a funnel f, a sieve e, a transparent cover c and a transparent bottom g. The ingredients to be mixed aro placed in compartment b and the container shaken, the mixture passing into compartment d. The bottom of chamber d is removable.
Patent GB-755303-A (GB)
Title: Improvements in or relating to television pick-up cameras comprising a lens turret whereof each lens comprises and adjustable diaphragm
IPC: H04N5/225
Filed: 1954-09-10
Abstract: 755,303. Electric control systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 10, 1954 [Sept. 15 1953], No. 26305/54. Class 40(1) [Also in Group XL(b)] The (iris) diaphragms associated with each lens 3 of a television camera lens turret 1 is adjusted to a predetermined setting when in the operative position by means of a control signal derived from an electrical bridge circuit 21 one branch of which comprises a resistor 24 which is manually adjustable to predetermine the setting and the other branch of which includes a variable resistor 27, individual to each diaphragm, the adjustment of which is controlled automatically in accordance with the adjustment of the diaphragm. On operating the turret to bring a selected lens system (including its associated diaphragm) into the operative position the diaphragm adjusting means, including motor 14 and mechanical transmission system 6 ... 13 varies the setting of the diaphragm (if necessary) and its associated resistor 27 until a state of balance is reached in the bridge circuit. The diaphragm stop aperture then corresponds to the predetermined setting which may be varied by variation of the manually adjustable resistor 24.
Patent GB-264110-A (GB)
Title: Improved heating furnace for annealing sheet-metal plates or the like
IPC: C21D9/46
Filed: 1926-10-22
Abstract: 264,110. Vereinigte Stahlwerke Akt.- Ges., and Bernatzky, W. Oct. 22, 1926. Charging and discharging.-In a furnace for annealing sheet metal plates and the like, of the kind in which the charge is carried into the furnace on portable supports which are coupled together so that as one support is withdrawn it pulls another into the furnace, the supports d, e are longer than the furnace c so that their ends together with the coupling members h are located outside the furnace during the heating operation. As shown in Fig. 1, the supports are successively drawn into the furnace through the door band out through the door a by a chain g, but by the provision of a similar chain on the opposite side the doors a, b may be used alternately for charging and discharging. Wheeled trucks i, movable on rails running transverely of the furnace, are provided at each end to bring up freshly loaded supports and to convey away those discharged from the annealing chamber. The supports are provided with guards to prevent burning.
Patent GB-1322998-A (GB)
Title: Carburetters for internal combustion engines
IPC: E01B27/02
Filed: 1971-04-19
Abstract: 1322998 Carburetters SOC INDUSTRIELLE DE BREVETS ET D'ETUDES 19 April 1971 [17 April 1970] 26427/71 Heading F1B A carburetter for internal-combustion engines comprises an intake pipe 6 in which a main throttle member 7 is located, a circuit for the supply of fuel mixed with air constituted by an ascending channel 1 which is connected to a constant level reservoir 2 through an immersed calibrated orifice 4 joined to a descending channel 5 which opens into the intake pipe downstream of the main throttle member 7 and an obturating member 8 adapted in use to block the descending channel except during periods of engine deceleration, the upper portion 2a of the reservoir being connected to a first portion of the air intake at substantially atmospheric pressure and the junction between the two channels being situated above the constant level and connected through an air passage provided with a second calibrated orifice 11 to a second portion of the carburetter air intake different from the first. The ascending channel comprises an upper calibrated orifice 32 situated above the constant level of fuel in the reservoir and communicates with the portion of the reservoir situated above the constant level through a passage of small section 33 located between the upper and immersed orifices. The suction existing in the ascending channel in use is reduced by the passage of small section so as to prevent or allow fuel being aspirated to the descending channel according to whether the obturating member is closed or not. Specifications 1217948 and 1290947 are referred to.
Patent GB-1501916-A (GB)
Title: Matching thermal expansions of components of turbo-machines
IPC: F01D11/18
Filed: 1975-06-20
Abstract: 1501916 Axial-flow turbomachines ROLLS-ROYCE Ltd 16 June 1976 [20 June 1975] 26427/75 Headings F1C and F1T To reduce thermal expansion of a compressor or other turbomachine casing 18 to a rate more nearly equal to that of the associated rotor, the casing is double walled at locations surrounding rotor blades 10 and stator vanes 12 to define spaces 26, 27 for heat insulating medium, e.g. air or asbestos tape. The inner wall 28 of each space 26 is lined with heat insulating metallic felt 29. Wall 30 of each space 27 may be similarly lined. To further reduce expansion, casing 18 is rigidly connected via flanges 21,22 and bolts 23 to an outer casing 16. In a modification Fig. 3 (not shown) connection to the latter is via flexible frustoconical members (58), additional thermal masses in the form of rings (64) being mounted via flanges (65) on the outer surface of the inner casing. The latter surface may be coated with heat insulating magnesium zirconate if the region between the inner and outer casings is to be heated by air bled from the compressor. Thermal matching between rotor and casing may be improved by feeding hotter and cooler air to the downstream and upstream ends respectively of a tube 70. The two air-flows pass through apertures in the latter adjacent rotor discs 19 before mixing and exhausting through apertures in tube 72.
Patent GB-691737-A (GB)
Title: Improvements in or relating to universal woodworking machines
IPC: B27C9/04
Filed: 1949-10-17
Abstract: 691,737. Universal woodworking machines. BRIGHTWELL, B. N. S. Jan. 17, 1951 [Oct. 17, 1949; Oct. 17, 1949], Nos. 26548/49 and 26550/49. Class 145 (ii). A combined circular saw and planer has a common work supporting surface. The circular saw is carried in journals A on a base which also carries the planer B. A cross cutting attachment F may be provided and a suitable work table is carried thereby in a common plane with the conventional tables employed before and after the planer, one table being adjustable to vary the planer cut. The saw table may be provided with an adjustable fence and work clamping means. Specification 686,994 is referred to.
Patent GB-955254-A (GB)
Title: Process for the production of lead tetraethyl
IPC: C25B3/13
Filed: 1961-07-21
Abstract: Lead tetra ethyl is made electrolytically using a lead anode, a mercury cathode, and as starting electrolyte a molten mixture of compounds KAl(Et)3R where R is F or ethyl, this mixture producing lead tetra ethyl, KAl(Et)4 and KFAl2(Et)6.  The presence of the compound KAl(Et)4 lowers the melting point of the mixture to the range 68-100 DEG C., in which the solubility of Pb(Et)4 does not exceed 2% and this separates from the mixture as a lower layer. Preferably the starting electrolyte contains 0.43-0.18 mols. KAl(Et)3F per mol. of KAl(Et)4 and the product containing also KFAl2(Et)6 and Pb(Et)4 is continuously removed, and after separation of the Pb(Et)4 the electrolyte is regenerated by treating with sodium hydride and ethylene, the sodium in the resulting complex being exchanged for the more desirable potassium by treating with potassium amalgam. The sodium amalgam is treated to release the sodium for conversion into the hydride.  The potassium aluminium complexes are more stable and are better electrical conductors than the sodium complexes. Specifications 848,364, 923,651, 946,143, 955,252 and 955,253 are referred to.
Patent GB-735852-A (GB)
Title: Improvements in metal-clad aluminium alloys
Inventor: CHAMPION FREDERICK ALFRED
IPC: B32B15/01
Filed: 1950-10-31
Abstract: A corrosion-resistant aluminium alloy containing 0.1-0.3 per p  cent of copper is clad with super-purity aluminium.  The alloy may also contain 1.25 per cent manganese, 2.25 per cent magnesium and 0.5 per cent manganese, or 1 per cent magnesium and 1 per cent manganese. The cladding may be on one or both sides.
Patent GB-834029-A (GB)
Title: Allyl 3, 4-epoxy-2-hydroxyalkanoates and process for preparing the same
IPC: C08F218/12
Filed: 1956-08-31
Abstract: The invention comprises allyl 3,4-epoxy-2-hydroxyalkanoates having the general formula <FORM:0834029/IV (b)/1> wherein R1 and R2 are hydrogen atoms or alkyl groups containing 1 to 4 carbon atoms.  The novel compounds may be prepared by reacting an allyl 2-hydroxy-3-alkenoate having the formula R1-CH=C(R2)CH(OH)COOCH2-CH=CH2 with peracetic acid at a temperature in the range of from 0 DEG  C. to 100 DEG  C. and removing continuously the acetic acid formed, the peracetic acid being employed in the form of a solution thereof in an inert organic solvent, free from hydrogen peroxide, water and sulphuric acid or other mineral acids.  The products may be used for the preparation of a three-dimensional, cross-linked resin structure.  Specification 791,356 is referred to.ALSO:Allyl 3,4-epoxy-2-hydroxyalkanoates of the formula <FORM:0834029/IV (a)/1> wherein R1 and R2 represent hydrogen and similar or dissimilar alkyl groups containing 1 to 4 carbon atoms, may be polymerized alone or in combination with vinyl monomers, such as vinyl chloride, through the double bond in the allyl group to form soluble, fusible linear polymers which later cross-link through the epoxide group to form solid, insoluble, infusible three-dimensional resin structures.  (For preparation of the monomer see Group IV (b)).