baber/WOPTO huggingface dataset:
Patent GB-603107-A (GB)
Title: Improvements in and relating to electrical speed control apparatus
IPC: F02D31/00
Filed: 1945-09-03
Abstract: 603,107. Automatic control systems for internal-combustion engines. ULTRA ELECTRIC, Ltd., STURGEON, H. G., and STURROCK, G. M. Sept. 3, 1945, No. 22661. [Class 38 (iv)] [Also in Group XXXVIII] In a speed-control system for rotary devices, e.g. a throttle controlled engine, the difference between two D.C. voltages from a frequency discriminator supplied from an alternator driven by a prime-mover, is amplified, and effects speed control through a differential relay. In the embodiment shown, the A.C. generator a is coupled to the speed controlled engine and supplies the balancing circuit b, wherein opposing D.C. voltages are developed across resistors r', r<SP>2</SP> to yield a difference voltage which is transmitted by amplifier E to terminals A, B, of the coil f of a differential relay d. The latter switches on the reversible D.C. or other motor e, which gives the throttle the required opening. The frequency of the alternator output is a function of the engine speed, thus the relative voltage drops across resistor R and condenser C are dependent upon engine speed. The voltages developed across resistors r<SP>1</SP>, r<SP>2</SP> in series with diodes D<SP>1</SP>, D<SP>2</SP> will correspondingly depend on engine speed, and being in opposition, the difference voltage will be a measure of a change of engine speed from a datum corresponding to the setting of R. To alter the engine speed the calibrated resistor R is adjusted to the required new setting, and the resulting unbalance of voltage passed through amplifier E to relay d which operates to connect the motor e to its supply and alters the throttle opening in the corrective sense, until the engine speed, and consequently the speed of alternator a is such as to produce equal voltages across r', r<SP>2</SP> when the motor is deenergized. Hunting is reduced by the anticipating circuit F, which being connected to amplifier E by condensers C', C<SP>4</SP>, is responsive only to the rate of change of alternator frequency, and which supplies terminals G, H, of relay d to energize winding f opposing coil f<SP>1</SP>. In a modification, Fig. 2 (not shown), the engine speed is brought rapidly to approximately the required value manually by an electrical follow-up system, and then the fine governing control is automatically switched in as manual control is removed. The movable contacts on the two arms of a resistance bridge are linked to the throttle motor and the setting arm of resistor R respectively. Manual adjustment of resistor R automatically transfers control of the throttle motor from the thermionic control circuit to the bridge network and the motor rotates until bridge balance is restored. Control is then returned automatically by relays, to the automatic system. In both embodiments the controlling signal operates on the throttle actuating devices in pulses, the duration and frequency of which are determined by the speed of the engine, and which are produced by any form of rotary or intermittent switch f.
Patent GB-405053-A (GB)
Title: Improvements in or relating to folding tables and the like
IPC: A47B1/04
Filed: 1932-08-13
Abstract: 405,053. Hinges ; stays. WATTS (SHEFFIELD & LONDON), Ltd., J., and WATTS, J. R., Lambert Road, Sheffield. Aug. 13, 1932, Nos. 22725 and 24790. [Classes 65 (i) and 65 (ii).] Hinges for the leaves of a table consist of strips 4, 5 connected by pivot pins 6 ; the part 5 has a stop 7 engaging with a shoulders 8, 9 on the part 4. The leaves of the table are supported in the horizontal position by spring-hinged brackets. Reference has been directed by the Comptroller to Specification 328,820, [Class 52 (iii), Tables &c.].
Patent GB-737769-A (GB)
Title: Improvements in or relating to horticultural apparatus
IPC: A01G9/20
Filed: 1953-08-18
Abstract: 737,769. Horticultural frames. JONES, J. R. RHYS-. Aug. 10, 1954 [Aug. 18, 1953], No. 22756/53. Class 20 (1). The glazed sash covers 3 of a long horticultural cold frame can be slid along on tracks 4 to parking extensions 10 of the tracks on which they swivel into a vertical plane for close storage. The covers are provided with rollers 6, 7 at right angles to facilitate moving them along their tracks 4 and are further provided with bobbin-type rollers 9 to run along the extension tracks 10. The tracks 10 have leadins IOB for the rollers 9 and are provided with crests 10A to provide a gravity run down for the covers. The rollers 9 are mounted a little to one side of the centre line of the covers 3 so that the covers pivot down freely to vertical close storage position. A yielding wood buffer strip 20 is provided to prevent the covers 3 from swinging beyond their vertical positions.
Patent GB-883807-A (GB)
Title: Phthalocyanine colouring matters
Inventor: HOWARD HAROLD THOMPSON
IPC: C09B47/26
Filed: 1959-07-02
Abstract: Cellulose acetate rayon is coloured in the mass with dyestuffs of the formula <FORM:0883807/IV (a)/1> where Pc is the residue of a stable metal phthalocyanine colouring matter which may carry at most one sulphonic acid group, -X- is -CH2- or -SO2-, R1 is a lower alkylene radical, R2 is a lower alkyl or an aryl radical, R3 is hydrogen, lower alkyl or -R4.O.CO.R2 where R4 is lower alkylene, n is a number from 2 to 8, and "lower" means that the radical contains not more than 5 carbon atoms.ALSO:The invention comprises dyestuffs of the formula <FORM:0883807/IV (c)/1> where Pc is the residue of a stable metal phthalocyanine colouring matter which may carry at most one sulphonic acid group, -X- is -CH2- or -SO2-, R1 is a lower alkylene radical, R2 is a lower alkyl or aryl radical, R3 is hydrogen or a lower alkyl radical or the group -R4.O.CO.R2 where R4 is a lower alkylene radical, n is any number from 2 to 8 and the term "lower" indicates that the radical contains not more than 5 carbon atoms. The dyes are made by heating a compound of the formula <FORM:0883807/IV (c)/2> with the anhydride or chloride of an acid R2COOH wherein R5 is hydrogen, lower alkyl or -R6OH where R6 is lower alkylene, or by treating a compound of the formula Pc-[-X-halogen]n with and amine of the formula <FORM:0883807/IV (c)/3> Examples are given.  The dyestuffs colour plastics and lacquers and in particular cellulose acetate blue to green shades (see Group IV(a)).  Specifications 586,340 and 844,338 are referred to.
Patent GB-811050-A (GB)
Title: Process for the production of highly concentrated hydrogen peroxide solutions
IPC: C01B15/013
Filed: 1957-07-18
Abstract: Stable, pure, concentrated hydrogen peroxide is obtained by partially evaporating dilute solutions, preferably those containing 35-45 per cent by weight of hydrogen peroxide in a first stage, and conducting the vapour so obtained in countercurrent to a solution of substantially the same concentration as that of the initial solution in a dephlegmator, with drawing, the concentrated solution formed from the dephlegmator and evaporating it completely once in a separate heating tube and concentrating the vapours of this stage by fractionation in a rectifier column by regulating the cooling at the top of the column.  The <PICT:0811050/III/1> heating tubes for the complete evaporation are preferably made of tantalum coated with a tantalum oxide layer.  In a typical example a 35 per cent solution of hydrogen peroxide was adjusted to methyl orange neutrality with sodium pyrophosphate in a storage tank 11. Part of this solution was supplied through a pipe 12, to an evaporator 13, and another part by way of a pipe 14 to a dephlegmator 15.  From the evaporator 13 the vapours pass into the dephlegmator 15 and excess water leaves by pipe 17.  Concentrated hydrogen peroxide is withdrawn over an overflow sill at 19 and is supplied to a complete evaporator 111 which is treated by means of steam jacket 112.  Vapours pass into a separator 113 where impurities are removed, and then enter the bottom of a rectifying column 114 which is fitted at the upper end with a reflux condenser 115.  The condensate is drawn off through a cooled siphon 116 into storage tanks 117.  Excess vapours are removed through a condenser 118 by a vacuum pump 119.  Column 114 is preferably made of glass and loaded with glass rings; 10-12 litres per hour of 93-95 per cent hydrogen peroxide can be obtained from an apparatus having heating tubes with a length of 2 metres and an internal diameter of 20 mms.
Patent GB-701364-A (GB)
Title: Improvements in and relating to mixed ferrite compositions
IPC: C04B35/26
Filed: 1952-09-11
Abstract: 701,364. Magnetic compositions. GENERAL ELECTRIC CO. Sept. 11, 1952 [Sept. 12, 1951] No. 22858/52. Class 38 (2) A ferrite composition having high values ot initial permeability, Q, and resistivity, suitable for cores for h.f. coils, comprises 47-49 mol per cent iron oxide, 0.25-0.75 mol per cent vanadium oxide, 24-32 mol per cent zinc oxide, the balance being nickel oxide. Comparative values are given of various properties of a number of compositions containing different percentages of vanadium oxide, both inside and outside the scope of the invention.
Patent GB-509539-A (GB)
Title: Improvements in or relating to manually-controllable jet-producing nozzles for fire-extinguishing and/or disinfecting apparatus
IPC: B05B1/30
Filed: 1938-08-03
Abstract: 509,539. Jet nozzles; valves. HAFTKE, E., and ILLINGWORTH, A. E. Aug. 3, 1938, No. 22999. [Classes 69 (iii) and 135] A manually-controllable liquid jet producing nozzle for fire extinguishing or disinfecting apparatus comprises a nozzle portion 3 having an outwardly flared discharge opening 4 and an externally operable outwardly flared control member 9 located in the nozzle and forming between its flared sides and the flared sides of the opening a passage 4a for the liquid, the control member being longitudinally movable for closing or varying the size and shape of the discharge opening. The control member may be hollow to act as a secondary nozzle. The nozzle 3 is rotatably mounted on a sleeve 1 connected at 2 to a supply hose, and mounted within this nozzle is an internally screwthreaded tube 7 engaging an externally threaded hollow stem 8 the upper end of which is formed with the outwardly directed flange 9 serving as a valve for closing the outlet 4a of the nozzle 3. The lower end of the stem 8 extends below the tube 7 and is partly cut away to provide an inlet 10 to the stem. Within the stem 8 is a tubular member 11 forked at its lower end 12 to embrace a fixed pin 1b extending across the sleeve 1. The tube. 11 has a cut-out portion 14 adapted to register with the inlet 10, and the valve stem 8 is freely rotatable on the tube 11 but prevented from relative longitudinal movement by pins 13. In the position shown the apertures 10, 14 are in register and liquid is supplied through both the nozzle outlet 4a and the tube 11. By rotating the nozzle 3 clockwise on the sleeve 1 the valve stem 8 is caused to move downwardly into the nozzle to close the outlet 4a, rotation of the stem being prevented by the pin 13 engaging the end of slot 16 in the stem, the inlet 14 to the tube 11 remaining open. If the nozzle 3 is rotated anti-clockwise the stem rotates on the tube 11 to close the inlet 14, and further rotation in this direction opens the outlet 4a, the inlet 14, remaining closed. The internal nozzle member may be open at its lower end and adapted to take over a plug fixed in the main nozzle to close the passage through it, when the main nozzle is rotated. Instead of rotating the nozzle a sleeve on the nozzle may be rotated to operate the valve. Fig. 6 shows a form in which a valve 68 has a threaded stem 67 engaging a hollow transverse member 65 in the lower part of the nozzle 62, the valve being operated by turning a milled nut 69 on the stem..
Patent GB-509463-A (GB)
Title: Improvements relating to the production of olefin polymers
IPC: C08F10/00
Filed: 1938-08-04
Abstract: 509,463. Polymerizing olefines. STANDARD OIL DEVELOPMENT CO. Aug. 4, 1938, No. 23049. Convention date, Oct. 2, 1937. [Class 2 (iii)] . Linear polymers of olefines, especially isobutylene, iso-amylene and like iso-olefines, of molecular weight above 3,000 are produced by mixing the olefine with a preformed solution of a solid metal halide of the Friedel-Crafts' type in a saturated halogenated aliphatic hydrocarbon having less than 5 carbon atoms, and at least 1 hydrogen atom, and which is liquid at the reaction temperature, the latter being kept below - 10‹ C. Alkyl halides, e.g. methyl and ethyl bromides, iodides, and especially chlorides are preferably used. The catalyst solution is preferably prepared at low temperatures, below 0‹ C., and contains .1-2 per cent of the metal halide. It may be precooled to the reaction temperature, e.g. to about -100‹ C. by dilution with liquid ethylene, and added to the liquid olefine in an amount of about .01 to 2 per cent. Cooling may be effected by addition of solid CO2 or liquefied inert hydrocarbons which evaporate under a predetermined pressure. The catalyst is hydrolysed, the polymer dissolved, e.g. in naphtha, and recovered. Examples contrast the treatment of isobutylene with aluminium chloride alone or dissolved in the known solvents (ethyl ether, pyridine, benzoyl chloride, trichlorbenzene, and nitromethane) with the polymerization using solutions of aluminium chloride in methyl, ethyl, isopropyl, butyl or secondary butyl chlorides, ethylene dichloride, chloroform, ethyl bromide, and methyl iodide, or of aluminium bromide in chloroform. Temperatures down to about - 100‹ C. are used, the polymers having molecular weights up to 115,000. Specification 472,553 is referred to.
Patent GB-1177687-A (GB)
Title: Mounting Arrangement for a Thrust Reverser on a Gas Turbine Engine
Inventor: RODGERS BARRY
IPC: F02K1/58
Filed: 1967-04-05
Abstract: 1,177,687. Deflecting propulsive jets. ROLLSROYCE Ltd. 29 March, 1968 [5 April, 1967; 18 May, 1967], Nos. 15601/67 and 23121/67. Heading B7G. [Also in Division F1] A gas turbine jet propulsion engine has a jet pipe 4 with a nozzle 5 on which are pivoted a pair of clam shell shaped thrust reverser doors 50, the pivot axis of the doors being transverse to and intersecting the jet pipe axis and being axially displaceable relative to the jet pipe. The doors 50 normally lie in recesses 51 in the nozzle wall to provide a nozzle flow area of square or rectangular secticn. The nozzle 5 is axially movable on rollers 53 to a position 54 thereby uncovering apertures 55 for thrust spoiling. Simultaneously the doors 50 are pivoted to the position 56 to closeoff the greater part of the nozzle area. Forward deflecting vanes may be provided in apertures 55.
Patent GB-832932-A (GB)
Title: Improvements in or relating to viewing devices for photographic transparencies
IPC: G02B27/02
Filed: 1957-07-22
Abstract: 832,932. Transparency viewing devices. PATERSON, D. M. July 3, 1958 [July 22, 1957], No. 23200/57. Class 97(1) A viewing device for photographic transparencies comprises several tubular elements 1-4 of slightly flexible material secured in telescoping arrangement. The element 1 carries a viewing lens 8 and the element 4 carries a diffusing screen 6 and has a passageway for reception of a framed transparency 10, and the elements 1-3 are each formed with projections 7 which co-operate with ridges 12 on the elements 2, 3, 4 to hold the elements in the extended position shown. By slight pressure on the upper and lower sides of each element 1-3 the assembly may be collapsed and in this position a cover plate may be attached.
Patent GB-337443-A (GB)
Title: Improvements in or relating to liquid piston internal combustion gas pumps
IPC: F04F1/16
Filed: 1929-07-29
Abstract: 337,443. Christie, S. P. July 29, 1929. Direct explosion apparatus.-In an internalcombustion pump in which the fuel is admitted above the surface of the returning liquid column, the fuel is admitted into a zone immediately above and rising with the surface of the liquid column bv a series of inlet valves 19 which are opened in succession by the rising liquid through floats 24 or vanes. The fuel is admitted to the passage 17 by a main valve 14. Specifications 241,635, 288,696, and 338,165 are referred to.
Patent GB-1123605-A (GB)
Title: Glass panel having improved sound transmission loss characteristics
IPC: B32B17/10
Filed: 1966-05-24
Abstract: 1,123,605. Transparent laminates. GLOBE GLASS MFG. CO. 24 May, 1966 [24 May, 1965], No. 23222/66. Heading B5N. A sound insulating panel comprises two sheets of glass each of thickness <SP>3</SP>/ 32  inch to 1/ 4  inch and an elastic interlayer of thickness 0À04 inch to 0À1 inch and having a Shore A hardness of 34 to 36, a tensile strength modulus and ultimate elongation in the machine direction of 1610 to 1690 p.s.i., 380 to 470 p.s.i. and 330 to 350% respectively. Suitably this interlayer is polyvinyl butyral containing between 55 and 80% wt. of plasticizer based on the wt. of resin. Suitable plasticizers are trivalent glycol di-2- ethyl butyrate, dibutyl sebacate, ethylene glycol di-2-ethyl butyrate and the caprylic and lauric esters of di- or tri-ethylene glycol.
Patent GB-316560-A (GB)
Title: Improvements relating to lubricating systems
IPC: F16N7/30
Filed: 1929-07-29
Abstract: 316,560. Bernard, F. E., and Poncet, M. F. M. July 30, 1928, [Convention date]. Controlling flow of lubricant; lubricant conveyed by fluid.-The supply of oil to a member 2 through a pipe 7 is controlled by causing the oil to flow, near the member 2, through a capillary orifice 4 provided at the apex of a cone 3 arranged in a direction opposite to the flow, so as to obtain a uniform supply irrespective of variations in pressure in the member 2. The cone 3 is arranged in a chamber 5 adapted to collect impurities and is surrounded by a screen 6, the perforations of which are smaller than the orifice 4. Where the oil is supplied from a mechanical lubricator 1, a steam inlet 8 to the pipe 7 is provided, and a cone 9 and screen 11 are arranged between the inlet 8 and the lubricator.
Patent GB-717642-A (GB)
Title: Depilatory agent for treating hides and skins
IPC: C14C1/06
Filed: 1952-09-16
Abstract: 717,642. Unhairing hides. BERKA, E. Sept. 16, 1952 [Sept. 25, 1951], No. 23276/52. Class 76. An unhairing agent for hides and skins is prepared by allowing fish or fish waste to undergo autolysis at 15‹-40‹C., the liquid subsequently obtained being separated from bones, scales, &c. and stabilized by the addition of alkaline substances, particularly calcium hydroxide. Alternatively the liquid is stabilized by mixing it with a pre-dried absorbent such as sawdust or bentonite to give a dry-feeling product. The latter may either be mixed with dry alkaline agents before storing or may be mixed with an alkaline agent in aqueous solution shortly before use. To accelerate the unhairing process the hides or skins are preferably pre-treated , with dilute sodium hydroxide solution.
Patent GB-1131381-A (GB)
Title: Improvements in or relating to an apparatus for the equal and synchronous feeding of animals
IPC: A01K5/02
Filed: 1967-05-19
Abstract: 1,131,381. Animal feeder. LABORATOIRES JACQUES LOGEAIS S.A. 19 May, 1967 [27 May, 1966], No. 23415/67. Heading A1M. An apparatus for the equal and synchronous feeding of at least 2 animals comprises at least 2 separate compartments 1a and 1b each provided with a food container 3a, 3b and a device for distributing food 8, and means for rendering all the distributing devices inoperative so long as any one of the food containers remains provided with food in the form of biscuits or contained in cardboard tubes. A distributing device consists of four guide bars 5a or 5b which are connected in pairs to form grids 5c, 5d, and pistons 9a and 9b are connected to plates 10a and 10b which in turn are bolted together, the pistons and plates being caused to move towards the compartments 1a and 1b by the spiral spring 13 which acts by way of winch 14 and cable 15. As the diameter of doses 8 is greater than the distance between the guide bars only one biscuit need abut the grid 5c or 5d to block the system. In other modifications a sensing device such as a photosensitive cell and light beam or a mechanical device may be used at the entrance to the food container. The pistons may be driven by one or more motors and leadscrews.
Patent GB-533711-A (GB)
Title: Improvements in or relating to the manufacture of sliding clasp fasteners
IPC: B29D5/02
Filed: 1939-08-14
Abstract: 533,711. Moulding sliding-clasp fasteners; casting machines. GRANT, H. B., and LIGHTNING FASTENERS, Ltd. Aug. 14, 1939, No. 23460. Addition to 517,876. [Class 87 (ii)]. The mould parts comprise a rotary drum 2 and a flexible band 5 interposed between the drum and the feed nozzle 11 which is extended to embrace and apply pressure to the band and drum while the material solidified. Mould cavities may be formed either in the drum or band, or both, and the mould and band are kept in alignment by pins 7 on the drum engaging corresponding teeth in the band. The tape is fed and the stringer is withdrawn between the band and drum. When the desired length of stringer has been obtained, the flow of material is interrupted by a cut-off 13.
Patent GB-1043256-A (GB)
Title: Method of removing dust from the exhaust gases of sintering installations
IPC: B01D47/06
Filed: 1963-06-12
Abstract: In a modification of the method for removing dust from gases from a sinter installation of the parent Specification a partial stream comprising the hottest of the collected gases is treated with water from the washing step and in such an amount that the temperature of the thus treated gas and the remainder of the collected gases when combined is just above the critical dewpoint before it enters a mechanical or electrical dust precipitator, and the amount of liquid employed in the washing step following the mechanical or electrical precipitator is sufficient to supply the water injected into the partial stream and water for granulating the sinter mix.
Patent GB-768158-A (GB)
Title: Improvements in desiccants
IPC: B01D53/26
Filed: 1954-08-12
Abstract: 768,158. Desiccants. ROSE, H. Aug. 10, 1955 [Aug. 12, 1954], No. 23491/54. Class 34(1) A desiccant consists of anhydrous calcium suphate, or' a mixture of anhydrous calcium sulphate and another desiccant such as calcium chloride, formed into tablets with the aid of a water soluble waxlike lubricant such as polyethylene glycol mono-stearate in the proportion of 2 per cent by weight. A method of preparation consists of drying granulated calcium sulphate di-hydrate or semi-hydrate to remove free moisture, adding the lubricant and compressing the granules into tablets and finally dehydrating the tablets by heating to a temperature of 230-250‹C. In another method granulated calcium sulphate is dehydrated by heating and then the lubricant is added and the tablets formed by compression.