baber/WOPTO huggingface dataset:
Patent GB-903035-A (GB)
Title: Purification of compounds which sublime
IPC: B01D7/00
Filed: 1960-04-26
Abstract: A continuous process for purifying a compound A melting above 20 DEG C. and capable of subliming, e.g. dimethyl terephthalate, which compound is contaminated with lower and higher boiling substances, and also neopentyl glycol and ortho-phthalic anhydride, comprises distilling at reduced pressure in a first distilling column a solution of the crude A in a solvent boiling <PICT:0903035/III/1> between 125 DEG  C. and the boiling point of A, e.g. xylene.  In Fig. 1, which is applicable to the compounds exemplified, solvent is distilled off at 6 and a part is returned by line 11 as reflux. Impurities lower boiling than A are removed from the first column 1 as a side-stream 13, and A together with high boiling impurities are removed from the base of column 1 at 14 and passed to a base heater 2 which is also connected to a second distilling column 3, this latter column having a dephlegmator 4 at its head. Vapourized A passes from the heater by line 16 into the second column where it is condensed, reflux being supplied by a line 17. High boiling impurities with some A are removed at 21.  Purified A is removed as a side-stream 20 and a small amount of A vapour is caused to re-enter the first column by a line 18 at a point where the temperature is above the melting point of A and where the pressure drops from the base heater 2 to the re-entry point is greater than the pressure drop across the second distilling column.  The process is applicable also to neopentyl glycol and orthophthalic anhydride is substance A and to specified paraffins, ketones, alkylated benzene, and to amines as the solvent.
Patent GB-438522-A (GB)
Title: Improvements in means for automatic regulation of the voltage of electric load circuits
IPC: G05F1/52
Filed: 1934-05-14
Abstract: 438,522. Automatic regulation; converting. NAAMLOOZE VENNOOTSCHAP STABILOVOLT, 77, Zwarteweg, The Hague.- (Assignees of Stabilovolt Ges. ; 1, Lorenzweg, Tempelhof, Berlin) May 14, 1934, No. 14531. Convention date, April 24. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 14, 1934.] [Classes 38 (ii) and 38 (iv)] In a circuit arrangement for the control of load circuit voltage according to Specification 438,521 the series connected discharge tube is controlled by a spill-over circuit controlled by voltage fluctuations due to the load variations. A condenser C3 is charged through a resistance V2 at a rate depending on the difference between the constant voltage across the discharge tube N and the load circuit voltage and the intermittent discharges resulting in the glow tube G1 induce in the secondary circuit of the transformer T1 impulses which are applied to the grid of the series discharge tube R to vary its impedance. The frequency of these impulses is suitably related to the mains frequency by choice of the values of the resistance and capacity V2, V3 and by a synchronizing arrangement consisting of the transformer T2 supplied from the mains; a phase shifter may be interposed, and may consist of a second spill over circuit in cascade with the first. Bridges of variable or non-ohmic resistances, or electron tubes controlled by voltage variation at the resistance V1 may be employed as phase shifting arrangements. Frequency division or multiplication may be employed in producing the control voltage.
Patent GB-1089579-A (GB)
Title: Improvements relating to lamps
IPC: B60Q1/00
Filed: 1966-04-01
Abstract: 1,089,579. Vehicle lamps. DAIMLERBENZ A.G. April 1 1966 [April 6, 1965],- No. 14613/66. Heading F4R. A lamp, especially for vehicles, consists of a translucent illuminable body 10 of deformable plastics material in the form of a rod, tube or band along which at least one light source -11, e.g. an incandescent lamp, is arranged so as to illuminate the whole extent of the body, and means for mounting the lamp on a vehicle The body may be recessed-to receive the lamp The mounting means may consist of a rib or projecting-strip on the body which is received into a groove on the vehicle, e.g. on a wing or bumper bar. Alternatively, -the vehicle may have a rib of T-section around whichthe ends of the body fit. The body may be coloured, e.g. red, and, where two or more lamps are used, may be subdivided by spaced opaque partitions, each portion being of a different colour.
Patent GB-972355-A (GB)
Title: Improvements relating to the polymerization of chloroprene
IPC: C08F36/16
Filed: 1963-04-11
Abstract: Chloroprene with or without small amounts of styrene, acrylic and methacrylic acids and their esters and nitriles and butadiene, is polymerized in aqueous alkaline emulsion in the presence of an alkyl mercaptan, 2-30% of the mercaptan being present at the start of the polymerization and the remainder being added in increments before 60% of the chloroprene has polymerized, the polymerization being stopped when 60 to 85% of the chloroprene has polymerized. Octyl and dodecyl mercaptans are preferred and the remainder of the mercaptan may be added in at least three equal or gradually increasing increments. Potassium persulphate and ammonium persulphate are specified catalysts while disproportionated wood rosin, sodium sulphite, the sodium salt of sulphonated diisophthyl methane, the sodium salt of anthraquinone beta sulphonic-acid, sodium hydroxide ammonia, potassium hydroxide, toluene and the sodium salt of lauryl sulphate are specified additives. Specifications 497,638, 497,707, 504,466, 619,620 and 807,496 are referred to.
Patent GB-681995-A (GB)
Title: Improvements in cupolas for foundries and steelworks
IPC: F27B1/16
Filed: 1949-06-01
Abstract: 681,995. Cupola furnaces. POUMAY, A. June 1, 1949 [July 5, 1948], No. 14731/49. Class 51 (ii) A cupola furnace has a windbox 4 formed with inspection windows 5 and supplying blast air below the melting zone to main tuyÞres 7 and smaller secondary tuyÞres 6 disposed below said main tuyÞres, and also supplying air to supplementary tuyÞres 8 disposed above the melting zone preferably in helical fashion and controlled by valves 9. Each set of tuyÞres 6 and 7 is disposed below an overhanging portion of the refractory brickwork 3 to prevent the tuyÞres being blocked by slag or metal and the tuyÞres 6 are in the form of narrow horizontal slits delivering a thin sheet of blast air. The secondary tuyÞres 6, which are above the level of the molten metal in the cupola hearth, allow of the production of sufficient carbon monoxide to react with the free oxygen present at the level of the main tuyÞres 7 producing carbon dioxide.
Patent GB-229551-A (GB)
Title: Improvements in or relating to rubber surfaced roads or flooring
IPC: E01C5/18
Filed: 1924-06-18
Abstract: 229,551. Read, C. W. June 18, 1924. Facing slabs.-Long strips R of rubber or the like are interlocked with a concrete foundation by strips or pieces A of expanded metal or wire netting partly moulded in the rubber and partly projecting therefrom to be embedded in the concrete.
Patent GB-1299227-A (GB)
Title: Automatic photographic apparatus
Inventor: HASEGAWA GORO
IPC: G03B15/05
Filed: 1970-03-26
Abstract: 1299227 Photographic apparatus CANON K K 26 March 1970 [26 March 1969 28 Jan 1970 29 Jan 1970 2 March 1970] 14744/70 Heading G2A Automatic photographic apparatus for controlling the amount of light emitted by an electronic flash discharge tube 9 during an exposure comprises a photo-electric element 6 placed within a camera 1 so as to receive light reflected by film 3 being exposed. In use, a main switch 14 is closed, so a capacitor 12 is charged, then a shutter button is released causing a mirror 5 to rise and shutter 4 to open. A flash synchronizing switch is now closed, causing an element 10 to trigger the tube 9. Some light from an object being photographed is reflected by the film 3 on to the element 6, and the output thereof is amplified through the integrating circuit of an amplifier 7 thereby actuating a control device 8 to quench the tube 9 after a time dependent on the intensity of light received by the element 6. In another embodiment, Figs.3, 4 (not shown), the power source (21) of a built-in exposure meter, used for automatic control of daylight exposures, is switched into circuit with the element (106) receiving light reflected from the film surface during a flash exposure. Fig. 5 (not shown) illustrates an example wherein the power source (31) of an electronic shutter-controlling device (30) is used as the power source for the element (106). In further embodiments, Figs. 6- 8 (not shown), the amount of light reflected by the film is measured as the film is loaded into the camera, and the reflection factor calculated from the difference between this amount and a predetermined amount. A lamp (40) may be provided in the camera for determining this amount, or when the shutter blade (17) is opened during the loading, two photo-cells (6 1 , 6 2 ) are provided. Figs. 9, 10 (not shown) provide scales for compensating for the different reflection factors of monochromatic and pan chromatic films. In Figs.11, 12 (not shown) a condenser lens (58) and a cylindrical support (57) are used with the element (6) to obtain accurate measurement from a particular area of film (3).
Patent GB-234647-A (GB)
Title: Improvements in window guides for motor-cars and other vehicles
IPC: B60J10/04
Filed: 1924-06-19
Abstract: 234,647. Sleigh, H. L., Cheston, A. S., and Coward, C. June 19, 1924. Vehicle windows; window frames.-Window guides for vehicles consist of a metal or other rigid channel 1, enclosed within a sheath adapted to assume a channel section and comprising two thicknesses of flexible or pliable material connected together in such manner that when one thickness 2 is flat, the other thickness 3 has a sagged or gathered-in appearance. The inner channel 2 may be of felt, fabric, &c., and the outer channel 3 may be of leather, fabric, &c., the two thicknesses being connected by stitching 4. The outer strip 3 may be constituted by a series of separated strips, as in Fig. 4, or the inner and outer members may be in a single piece folded over upon itself and connected by stitching 4, as in Fig. 5. Screws 7 secure the composite channel to the window frame.
Patent GB-989716-A (GB)
Title: Improvements in interpole d.c. machines
IPC: H02K23/22
Filed: 1964-04-10
Abstract: 989,716. Interpole windings for dynamo-electric machines. MASCHINENFABRIK OERLIKON. April 10, 1964 [April 16, 1963], No. 14840/64. Heading H2A. The commutation, in a D.C. machine connected to a network subject to surges or fluctuations, is rendered insensitive to these disturbances by means of short-circuited windings 4<SP>1</SP> embracing each main pole, N 1  or S 1 , and the next adjacent interpole, N 2  or S 2 , in the direction of rotation of the machine. When the fluctuation is severe, e.g. in the case of rectifierfed motors, a continuous winding embracing all the poles of the machine may be shorted by a heat-dissipating resistance (Fig. 3, not shown). The windings may be of low-temperature resistance coefficient material. For reversible machines, two such windings, selectively switched may be used.
Patent GB-180690-A (GB)
Title: Apparatus for winding up a spring motor by hand and by an electromotor
IPC: G04B7/00
Filed: 1922-05-26
Abstract: 180,690. Allgemeine Elektricitats- Ges. May 27, 1921, [Convention date]. Spring power-storing mechanism.-A spring motor arranged to be wound either by hand or by an electromotor is provided with a ratchet device 10 - - - 14 situated between the handoperated disc 4 and the electromotor-driven disc 8. The disc 4 is fast on the shaft 3, while the disc 8 is loose on the shaft 3 and has its lower part in the form of a worm-wheel driven by the electromotor through a worm 9. When winding by the electromotor, the disc 8 runs clockwise, and the ends of the pawl 10 bear respectively against the hub of the disc 8 and against one of the teeth 12 cast on the disc 4 and so couple the discs 8, 4 and thus rotate the shaft 3 and wind up the spring. When the machine is wound by hand, only the disc 4 rotates clockwise, the pawl 10 being thrown out of gear and the disc 8 remaining stationary. When the spring motor is wound up, the worm 9 automatically locks it against unwinding.
Patent GB-863108-A (GB)
Title: Improvements in or relating to transformers
IPC: H01F19/06
Filed: 1959-05-01
Abstract: 863,108. Impedance-transforming networks. WESTERN ELECTRIC CO. Inc. May 1, 1959 [May 12, 1958], No. 14898/59. Class 40(8) A very wide-band (i.e. of the order of hundreds of megacycles) transformer comprises a bifilar winding 11, 12 having one end of one of the conductors directly connected to the opposite end of the other in such a manner that one of the external circuits Hg, Rg is in series with one of the conductors 11 and the other external circuit RL is in series with both conductors 11, 12. The manner of connection of the terminals 1, 2, 3, 4 of the bifilar winding in the case of two unbalanced circuits is shown in Fig. 2 and the corresponding circuit for connecting an unbalanced 33 to a balanced circuit is shown in Fig. 3 where the two equal parts 34, 34<SP>1</SP> represent the balanced circuit. Assuming that the juxtaposition of the two conductors is such as to produce a coupling coefficient of unity, analysis of the network shows that an impedance transformation ratio of 4 : 1 is obtained with a low frequency cut-off point determined by L = Rg/4#f 1  where L is the inductance of either of the conductors. For matching RL = 4 Rg. At high frequencies the input drives the bifilar winding as a transmission line the output falling to zero as the electrical length of the winding approaches one half-wavelength (#/2) Near frequencies corresponding to an electrical length of #/4 the power transfer is partly determined by the characteristic impedance of the winding which is arranged to be equal to the geometric mean of the input and output impedances. An impedance transformation ratio of 16 : 1 may be obtained by connecting together two 4 : 1 transformers in cascade. The core 10 of the transformer may be made of nickel-zinc ferrite.
Patent GB-1310583-A (GB)
Title: Method for treating edible oils
IPC: C11B3/10
Filed: 1970-03-26
Abstract: 1310583 Refining edible oils INTERSTATE FOODS CORP 26 March 1970 [28 March 1969] 14898/70 Heading C5C Edible oils are treated to remove fatty acids therefrom by passing the oils through a bed of type X molecular sieve. The oils may be of animal, vegetable or marine origin. The bed may also contain a filter aid, e.g. diatomaceous earth.
Patent GB-128222-A (GB)
Title: Improvements in or relating to Presses for Oil Extraction.
IPC: B30B9/06
Filed: 1919-06-12
Abstract: 128,222. Soc Anon. Usines de Keukelaere..Tan. 29, 1916, [Convention date]. Fatty oils, extracting by pressure. The seed chamber 2 of an hydraulic press is made in one with the body 1 of the press, the piston 4 of which expels the crushed material from the chamber after the oil has been expressed. The liner consists of a number of bars 6, Fig. 5, having lateral grooves 13. When the piston rises into the chamber 2 any material adhering to the liner is scraped off by rings 16. At the lower end of the piston are leathers 17, Fig. 4, held open by wooden rings 18 which are retained by rings 19, 20. The cover 25 engages lateral lugs on the chamber 2 and is moved into and out of position by bevel and screw mechanism 28, 27. The chamber 2 is surrounded by a heating coil 32.
Patent GB-942313-A (GB)
Title: Improvements in or relating to bumpers
Inventor: REES HENRY ANDREW
IPC: B21B39/12
Filed: 1960-04-28
Abstract: 942,313. Shock-absorbers. DAVY & UNITED ENGINEERING CO. Ltd. April 18, 1961 [April 28, 1960], No. 14913/60. Heading F2S. A bumper comprises e.g. six side-by-side bumper sections each consisting of a beam of which three are indicated at A, B, C and each having an individually operable spring-loaded shockabsorber unit 10 of the hydraulic dashpot type means being provided for joint operation whereby the shock of impact with one of the bumper sections also acts upon the remaining sections. As shown each beam, e.g. the beam C, Fig. 1, axially slidably mounted in fore and aft bearings 6 in a support 8, has a head 2 which forms part of a continuous bumper surface arranged above the rollers of a receiving table 4 for slabs discharged from a plate mill, not shown. A shoulder 19, extending downwardly from the beam C co-operates with the corresponding ends of a pair of operating shafts 12 which extend through oil seals 13 in the forward and rear ends of a casing 11 for the shock absorber unit on either side of an hydraulic piston and cylinder unit 15, 16. The shafts 12, linked by a cross member 14 connected to the piston rod 15, each carries three restoring springs 17 which are separated by washers 18 slidable on the shaft and are constrained between the cross member 14 and the opposed end of the casing 11 to preload the shafts forwardly by a force e.g. of one and a half tons. Spring recoil devices 24 carried at the rearward ends of the beams are coupled to a common shaft 20 by cross pieces 22 each with a pair of crank arms 21 which extend on either side of the beam and are keyed to the shaft 20 which is rotatably mounted in bearings 29 on the support structure 8. Each cross piece 22 is sprung into the gap between the shoulder 23 of a beam and a corresponding end cap 28 of an associated recoil device 24 to preload a number of ring springs 25 in the device. The springs 25 are mounted on a rod 26 connected to the cap 28 and slidably received in a bushing 27 at the rear end of the beam. The movement of a beam as it is struck by a slab acts upon the cross member 14 of the associated shock absorber unit and upon the respective cross piece 22 to rotate the shaft 20 and load all of the recoil devices of the remaining beams. If the applied force is greater than the opposition afforded by the beam displaced and the recoil devices of the remaining units then the force is opposed by the whole of the opposing force of the bumper assembly except for that of the recoil device 24 of the beam struck by the slab.
Patent GB-170824-A (GB)
Title: Improvements in and relating to electric synchronous machines
IPC: G04B31/08
Filed: 1921-05-30
Abstract: 170,824. Compagnie GÚnÚrale Electrique. Oct. 27, 1920, [Convention date]. Exciting; dynumos, regulating; motors, controlling.-In the method of operating synchronous machines having three-phase rotor windings by starting them as induction motors and supplying continuous current to two of the rotor phase windings m, n, in series at synchronous speed, the third phase winding o is short-circuited so that it acts as a damping-winding. The machine is provided with one supplementary slip-ring in the case of a star rotor winding and with two slip-rings in the case of a delta rotor winding. In one of the rotor phase winding circuits an ammeter A is provided for determining the most favourable moment for connecting to the source of continuous current. Specifications 169,953 and 169,954 are referred to.
Patent GB-955481-A (GB)
Title: Acrylic coating compositions and substrates coated therewith
IPC: C08L27/06
Filed: 1960-04-28
Abstract: A fluid coating composition comprises (i) a particulate solid polymer of at least 80% by weight of vinyl chloride having a molecular weight of at least 20,000; (ii) a polymer of one or more alkyl, cycloalkyl, alkoxyalkyl, aralkyl or saturated alicyclic hydrocarbyl esters of acrylic and/or methacrylic acid; (iii) a liquid medium comprising a non-volatile latent plasticiser for (i) and in which (i) and (ii) are dispersed and dissolved respectively; and (iv) a minor proportion of an "acidic material."  A "non-volatile latent plasticizer" is defined as sufficiently high boiling not to be driven off from the composition below 450 DEG F. and as being a non-solvent for (i) at 25 DEG C. but a solvent therefore at 75 DEG C. "Acid material" is defined broadly according to the Lewis definition as containing molecules or ions capable of associating with unshared electron pairs and thus includes normal salts. Comonomers which may be present up to 20% in (i) are vinylidene chloride; vinyl esters of acetic, chloroacetic, propionic, butyric and benzoic acids; methyl, ethyl, propyl and allyl acrylate, methacrylate and crotonate; styrene and nuclear ethyl- and mono- and di-chlorosubstituted styrenes, alpha-methyl styrene; divinylbenzene and vinylnaphthalene; butadiene and chlorobutadiene; acrylic acid amide, anilide and nitrile; and C1-8 alkyl, allyl, methallyl and phenyl esters of maleic, itaconic, aconitic and fumaric acids.  Comonomers which may be present in (ii) are up to 45% of acrylonitrile, methacrylonitrile, styrene or a C1-4 alkyl styrene; up to 8% of acrylic, mono- or dimeric methacrylic, itaconic, maleic or fumaric acid; and up to 10% of vinyl C1-8 alkyl ethers, t-amino C1-4 alkyl acrylates or methacrylates, vinyl pyridine, N,N-di-C1-4 alkyl amino C2-4 alkyl acrylates or methacrylates, hydroxy C2-4 alkyl acrylates or methacrylates, acrylic and methacrylic amides and various aminoalkyl substitution derivatives thereof, and, most preferably compounds of the formula: <FORM:0955481/C3/1> wherein A is a C2 or C3 alkylene group, such as N-[beta-(alpha-acryl- or methacryl-oxyacetamido) ethyl]-N,N1-ethylene or trimethylene urea.  An extensive list of latent plasticizers includes esters of phthalic, phosphonic, phosphoric, adipic, succinic, azelaic, sebacic, suberic, citric, pimelic, oleic, 2-ethylhexanoic and caprylic acids, polyesters of alkylene and polyalkylene glycols with adipic or azelaic acid, hydrocarbons and halogenated hydrocarbons, pentaerythritol esters and epoxidized oils and esters.  The liquid medium (iii) may also contain a volatile diluent such as a hydrocarbon or alcohol.  A long list of "acidic materials" includes organic and inorganic acids, anhydrides and salts, boron trifluoride and partial esters of polycarboxylic acids. Optional ingredients specified are titanium dioxide, lead titanium and basic lead carbonate.  The compositions are stated to have good adhesion to metal surfaces.
Patent GB-253558-A (GB)
Title: Improvements in or relating to steam boilers
IPC: F22B21/18
Filed: 1926-06-14
Abstract: 253,558. Erie City Ironworks, (Assignees of Carlson, C. T.). June 15, 1925, [Convention date]. Water-tube boilers.-In a boiler having front and rear upper drums 1, 3 and a lower drum 2 connected by banks of tubes, the furnace gases, after passing through the front banks 4, 4<a>, are directed by a baffle 19 upwardly and downwardly through the upper banks 5, 8. The gases then pass between baffles 20, 18 through the lower part of the front bank 4<a> and are guided upwardly through the rear bank 6 by a baffle 22. A superheater 12 fitted between the banks extends through the baffle 18 between the upward and downward gas passes. Steam is taken off to the superheater from a chamber 9 in the upper part of the front upper drum. Steam is led into the chamber from the rear upper drum through the top tubes of the upper tube banks, and water is led from the chamber through a pipe 24 extending into one of the lower tubes 5. The rear bank of tubes is connected to the rear side of the rear upper drums.