baber/WOPTO huggingface dataset:
Patent GB-339446-A (GB)
Title: Stroboscopic light advertising devices
Filed: 1929-11-11
Abstract: 339,446. Abel, A. Nov. 11, 1929. Stroboscopic apparatus; kinematograph apparatus.-A changing or moving sign comprises a moving display member illuminated intermittently by a source of light which is preferably an electric discharge lamp. The moving member may be a rotating disc, drum, prism, pyramid, cone, sphere, &c., or may be an endless band running round rollers, and the matter displayed may be printed &c., or may comprise threedimensional objects. The moving member may be divided into several parts each having its own rate or direction of motion. The light may be reflected from the moving member, or be transmitted therethrough, or both methods may be employed. Fig. 5 shows a rotating disc 85 bearing display matter which includes a real or imitation cigarette 118. The disc is illuminated fromthe front by an electric discharge lamp 102 enclosed in a reflector 103, and the disc may have an undulating, facetted, grooved, ribbed, or like surface to disperse the light. A number of differently positioned and differently coloured lamps may be lit in sequence. The disc 85 is driven by a motor 75 through a clutch 80, 81 which is disengaged at uniform intervals to allow the speed of the disc to slow down and thus to produce a changing sign effect, the rate of interruption of the lamp circuit being kept constant by a switch 106, 107 directly rotated by the motor. Alternatively the frequency of the light flashes may be varied. The mechanism for controlling the clutch comprises a pinion 79 on the motor shaft engaging a toothed wheel 95 driving a cam 92 through worm gearing 93. The cam 92 shifts the clutch member 81 into and out of engagement by means of a spring-pressed crank arm 88. A condenser 116 is interposed across the switch terminals and a spark gap 117 is introduced into the high tension lead from the transformer 115 to shorten the duration of the lamp flashes. When transmitted light is employed the lamps may be arranged in grid, spiral, star, or radial fashion.
Patent GB-1062968-A (GB)
Title: Process for epitaxial crystal growth
IPC: H01L21/00
Filed: 1964-08-21
Abstract: In a process for the epitaxial growth on a crystal base of semi-conductor crystals by reduction or decomposition of a gaseous compound at an elevated temperature the temperature of the crystal growth surface is reduced when an initial layer has been deposited. Silicon or germanium P+type substrates (27) (drawing not shown) containing 1 ppm boron or silicon N+ type substrates containing 0.05 ppm phosphorus trichloride are placed on a graphite heater (17) in a quartz vessel (11) and first heated in pure hydrogen to remove oxides, &c. then heated in feed gas containing by volume 99% hydrogen, 1% Si Cl4 or Ge Cl4 and 0.05 ppm phosphorus trichloride or diborane as dopant. When a layer at least 0.1 micron thick has been deposited, the temperature is reduced and if desired the feed gas flow rate and concetration may be varied.  The substrate temperature sensed by an optical pyrometer may be automatically controlled. Deposition of gallium phosphide on gallium arsenide from feed gas containing Ga Cl3 P Cl3 and a trace of barium dopant is referred to.ALSO:In a process for the epitaxial growth on a crystal base of semi-conductor crystals by reduction or decomposition of a gaseous compound at an elevated temperature the temperature of the crystal growth surface is reduced after an initial layer has been deposited. Silicon or germanium P + type substrates (27) (Drawing not shown) containing 1 p.p.m. boron or silicon N + type substrates containing 0.05 p.p.m. phosphorus trichloride are placed on a graphite heater (17) in a quartz vessel (11) and first heated in pure hydrogen to remove oxides &c. then in feed gas containing by volume 99% hydrogen, 1% SiCl4 or GeCl4 and 0.05 p.p.m. phosphorus trichloride or diborane as dopant. When a layer at least 0.1 micron thick has been deposited, the temperature is reduced and, if desired, the feed gas flow rate and concentration may be varied.  The substrate temperature sensed by an optical pyrometer may be automatically controlled.  Si substrates are heated in pure hydrogen to 1300 DEG  C. and then in feed gas at about 1300 DEG  C. the temperature being reduced to 1295-1000 DEG  C. Ge substrates are heated in feed gas at 825 DEG  C. and this is reduced to 600 DEG  C. or 675 DEG  C.  N on N + and P on P + epitaxial layer substrate devices may be formed and a P-N junction may be made by depositing a P layer on to an existing N on N + device or an N layer on to a P layer and such junctions used as a Zener or varactor diode.  Deposition of gallium phosphide on gallium arsenide from feed gas containing GaCl3, PCl3 and a trace of barium dopant is referred to.
Patent GB-1444593-A (GB)
Title: Imidazoline derivatives
IPC: C07D233/48
Filed: 1973-07-19
Abstract: 1444593 Imidazolines BOEHRINGER INGELHEIM GmbH 19 July 1973 [19 July 1972 (2)] 34436/73 Heading C2C [Also in Division A5] Imidazolines of the general formula wherein R 1  is a chlorine, bromine or fluorine atom or a C 1-3  alkyl, C 1-3  alkoxy, cyano or trifluoromethyl group, each of R 2  and R 3  is a hydrogen, chlorine, fluorine or bromine atom or a C 1-3  alkyl, C 1-3  alkoxy, cyano or trifluoromethyl group, R 4  is a hydrogen atom, an N- ethylpiperidin-3-yl group or an optionally substituted alkyl group and R 5  is a hydrogen atom or NR 4 R 5  is a heterocyclic group, and R6 is a hydrogen atom or an optionally substituted alkyl group, with the proviso that R 4  and R 6  are not both hydrogen atoms, and acid addition salts thereof, which are novel provided that R 4  is not a hydrogen atom or unsubstituted alkyl group when R 6  is an unsubstituted alkyl group and R 6  is not a hydrogen atom or unsubstituted alkyl group when R 4  is an unsubstituted alkyl group, are prepared (a) by reacting a compound of the general formula wherein X is an atom or group removable as an anion, with a compound of the general formula HNR 4 R 5 , provided that X is not a methylthio group when the product is not novel; (b) by reacting a compound of the general formula with a compound of the general formula wherein R 11  is a hydrogen atom or a C 1-3  alkyl group; (c) by cyclizing a compound of the general formula wherein A is -CN, -C(=NR 11 )-NR 4 R 5  or -C(=NR 4 )X; and (d) when each of R 4  and R 6  is an optionally substituted alkyl group, by reacting the corresponding compound in which R 4  is a hydrogen atom with a compound of the general formula R 9 -Y, wherein R 9  is an optionally substituted alkyl group and Y is an atom or group removable as an anion; followed optionally by salification of the product. 2 - (N,N<SP>1</SP> - Dimethylguanidino) - 2 - (2,6- dichlorophenyl)-ethylamine hydriodide is prepared by reacting 2,6 - dichlorophenyl - ethylenediamine with N,N<SP>1</SP> - dimethyl - S - methylisothiourea hydriodide. N - Amidino - 2 - (2,6 - dichlorophenyl) - 2- methylamino-ethylamine sulphate is prepared by reacting 2 - (2,6 - dichlorophenyl) - 2 - methylamino-ethylamine with S-methyl-isothiourea sulphate. Reference has been directed by the Comptroller to Specification 1,347,930.
Patent GB-906034-A (GB)
Title: Photographic developing and fixing composition and process
IPC: G03C5/38
Filed: 1958-10-28
Abstract: 906,034. Photographic developer/fixer compositions. CORMAC CHEMICAL CORPORATION. Oct. 28, 1958 [Oct. 29, 1957], No. 34488/58. Class 98 (2). A combined developer and fixer for photographic silver halide emulsions comprises an aqueous solution of 1 -phenyl-3-pyrazolidone, hydroquinone, sodium sulphite, sodium thiosulphate and, as alkaline buffer, an alkali metal aluminate or a mixture of sodium hydroxide and potassium alum, the pH of the resulting solution being 11 to 12, the ratio of total developer to sodium thiosulphate being from 1 : 2 to 1 : 20 by weight and the ratio of 1-phenyl- 3-pyrazolidone to hydroquinone being 1 : 40 to 1 : 1 by weight. The compositions may also include photographic glycin, potassium bromide and benztriazole or 6-nitrobenzimidazole.
Patent GB-1047549-A (GB)
Title: Improvements relating to the application of surface coatings to plane-surfaced plates
Inventor: BONE RONALD DAVID CHARLES
IPC: G01N30/93
Filed: 1965-08-13
Abstract: 1,047,549. Coating apparatus. SHANDON SCIENTIFIC CO. Ltd. Aug. 13, 1965, No. 34698/65. Heading B2B. Apparatus for holding chromatographic plates 44 of different thicknesses side by side with their top surfaces in coplanar relationship comprises a support 45 having resiliently yielding surfaces beneath opposite marginal edges of the plate, a base frame 1 for carrying the support and providing spaced non-yielding locating surfaces 5, 32, which are relatively movable towards and away from one another from first relative positions at which they lie in a common plane above respective marginal edges of the plates, to second relative positions at which the spacing between the non- yielding surfaces is greater than the spacing between said yieldable surfaces to allow the plates to be lifted from the apparatus after they have been coated; and a handle operated mechanism for producing relative movement of the non-yielding surfaces and which is adapted, after moving them to the first relative positions, to reduce the distance between the yieldable and non-yielding surfaces. Preferably the base 1 has one fixed side angle plate 3 and one movable side angle plate 30 hinged to a fixed angle iron 10, and movable through a spring loaded rod and sleeve connection 35, 36 (Fig. 3, not shown); the rod 35 being eccentrically pivoted to a cam 15. The cam 15 is rotated through suitable shafts and gearing from handle 27 and the cam mechanism is also used, after the angle plate 30 has been moved to a position in which the non-yielding surface 32 is above the marginal edges of plates 44, to raise the support 3 with the plates 44 thereon, so as to bring the upper surfaces of the plates into contact with the non-yielding surfaces 5, 32. The yieldable surface of support 45 are formed by rubber strips 48 and a covering flexible plastics sheet 50 so that when the upper surfaces of plates 44 are in contact with the non-yielding surfaces, the variations in thickness of the plates is taken up by the yieldable surface of the support 45.
Patent GB-340032-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: A47L5/36
Filed: 1929-07-16
Abstract: 340,032. Vacuum cleaners. ELECTROLUX, Ltd., 153, Regent Street, London.-(Inventia Patent- Verwertungs Ges.; 10, Herrenacker, Schaffhausen, Switzerland.) July 16, 1929, No. 34701/30. Divided on 339,975, [Class 8 (i), Air and gases, Compressing &c.]. [Class 8 (i).] The air outlet of a vacuum cleaner having an enclosed filter bag 19 is relatively small and provided with guides 25 diverting the horizontal air stream away from the floor. The guides may be cast integral with a ring 23 at the outlet, to which a plug 16 connecting a hose &c. may be screwed.
Patent GB-203975-A (GB)
Title: Improvements in appliances for the reduction of scoliosis and other bone deformations
IPC: A61F5/02
Filed: 1922-12-20
Abstract: 203,975. Guillemin, J. Dec. 20, 1922. Body supports.-An apparatus for use with jackets, belts or plaster casts employed for the reduction of scoliosis and other bone deformations comprises a metal plate 1 which may be soldered to the jacket or be provided with plates 5 carried in slides 6, the plates 5 being located beneath the plaster. A screwed rod 3 passes through a tapped hole in the plate 1 and carries a plate 4 lined with rubber which ; is pressed against the protuberance to be treated. The pressure is varied by adjusting the screw 3 which is held in any position by a lock nut 7. Specification 22518/02 is referred to.
Patent GB-638065-A (GB)
Title: Dry dusting preparations for combating pests
IPC: A01N25/24
Filed: 1946-11-22
Abstract: A dry dusting powder for combating pests comprises a pesticide, a hardenable aminoplastic and a hardening accelerator constituting at least one-third of the weight of the aminoplastic.  Specified pesticides are copper oxychloride, copper phosphate, lead arsenate, barium hydrofluosilicate, sulphur, D.D.T., 3:6-dinitro-monochlorocarbazole, 2:4-dinitro-thiocyanobenzene and nitrated N-phenyl a -naphthylamine, Hardenable aminoplastics are, hardenable and, if desired, etherified, carbamide and p  melamine resins obtained by condensing formaldehyde with a compound containing an amino group, e.g., urea, thiourea, cyanamide, dicyandiamide, dicyandiamidine, guanidine, biguanide and melamine, mixtures thereof and alkyl and acyl substituted compounds thereof.  Specified hardening accelerators are ammonium salts of strong inorganic and organic acids, e.g., ammonium chloride, sulphate, nitrate, oxalate and lactate, ammonium salts of pesticides, e.g., ammonium salt of 2:4-dinitrophenol or 2:4-dinitro-6-cyclohexylphenol, ammonium salts of organic sulphonic acids, e.g., of naphthalene 1:3:6 trisulphonic acid, di-isobutyl-naphthalene sulphonate and di-isopropylnaphthalene sulphonate.  These may be used alone or with other accelerators such as urea.  Aluminium sulphate is suitable for melamine HCHO, condensates and oxidizing agents such as potassium persulphate may be used to harden the urea/formaldehyde aminoplastics.  The compositions may also comprise hygroscopic substances or wetting agents such as alkyl-naphthalene sulphonates, fatty alcohol sulphonates, polyethylene glycol derivatives of alkylated phenols; inert carriers, e.g., kaolin, gypsum, bentonite or kieselguhr; adhesives, e.g., casein, glue or gelatine; other materials, e.g., powdered sulphite cellulose waste liquor, cellulose derivatives, basic magnesium carbonate and silica gel.  The preparations are thoroughly dried and stored in a dry state.  Alternately the aminoplastic and hardening accelerator, either of which may be admixed with the other constituents of the final preparation, are stored separately and mixed shortly before use or dusted together simultaneously. Specifications 246,817, [Class 2(iii)], 433,143, 587,263, [both in Group IV], and 613,957 are referred to.
Patent GB-1456569-A (GB)
Title: Tapping aluminium from electrolytic cells
IPC: C25C3/20
Filed: 1974-08-07
Abstract: 1456569 Tapping aluminium from electrolytic cells SWISS ALUMINIUM Ltd 7 Aug 1974 [9 Aug 1973] 34734/74 Heading C7B A method of tapping molten Al from a cell in which Al 2 O 3  in a fluoride melt is electrolyzed comprises (a) measuring a succession of instantaneous ohmic resistance values of the cell over a period of time within 30-60 minutes after the first "normal cell service" following the previous tapping, smoothing these values and calculating the difference between the smoothed value at the end of the period and the predetermined base resistance of the cell; (b) adjusting the anode beam height to reduce this difference to below a predetermined limiting value; (c) repeating steps (a) and (b) but with respect to a succession of instantaneous resistance values measured over a period of time within 30-60 mins after the last "normal cell service" before next tapping the cell; and (d) tapping off H mm. of molten Al where H = 1m.t.f. +#B in which 1m is the mean cell D.C. current (kA), t is time in hours (h) between successive tappings, f is a proportionality factor representing the anode burn rate in mm/kAh (usually f = 0À0056-0À0063) and #B is the difference in mm. between the adjusted heights of the anode beam obtained in step (b) and step (c). A "normal cell service" occurs when the cell crust is routinely broken-in and extra Al 2 O 3  is added and excludes servicing necessitated by occurrence of an anode effect. Operations may be controlled throughout by computer, tapping being with a conventional suction pipe. The height H which is tapped may be controlled by maintaining the interpolar distance constant during tapping (controlled by maintaining cell resistance constant) and monitoring the distance moved by the anode beam during this step.
Patent GB-1112455-A (GB)
Title: Power source device for driving step motor of gyro
Inventor: HIROKAWA YOICHI
IPC: H02P8/32
Filed: 1966-08-03
Abstract: 1,112,455. Electric inverter circuits; control of stepping motors. TOKYO KEIKI SEIZOSHO KABUSHIKI KAISHA. 3 Aug., 1966, No. 34746/66. Headings H2F and H2J. The power supply for controlled rectifiers 22-24 for feeding the windings 18-20 of a stepping motor of a gyro is obtained from the tap on the output transformer of a controlled rectifier inverter 8 for feeding the drive motor 7 for the gyro. The D.C. voltage at the tap 6 of the inverter shown momentarily goes to a low value each time the thyristors 10, 11 change their state since they momentarily conduct simultaneously. This causes the conducting one of thyristors 22-24 to be extinguished before the next is fired. The extinguishing can be assisted by commutating capacitors 27-27.
Patent GB-751947-A (GB)
Title: Improvements in or relating to typographical casting machines
IPC: B41B11/38
Filed: 1954-12-01
Abstract: 751,947. Type-bar-making machines. MERGENTHALER LINOTYPE CO. Dec. 1, 1954 [Feb. 24, 1954], No. 34757/54. Class 100 (3). Clamping matrices-A typographical casting machine includes a pair of line-clamping jaws movable from a line-receiving position to and from a quadding position, and a fluid pressure device for effecting quadding movement of the jaws, said device comprising a closed fluid circulating system which includes a fluid reservoir, a continuously operated pump for circulating the fluid through the system and a single reversible fluid operated rotary motor connectible to either jaw for quadding or to both jaws for centring. The jaws 1, 2 are actuated by racks 11, 12 respectively, Figs. 4 and 5, operated by a driving pinion 13 selectively movable axially by means of a control knob 23 into one of four positions to engage either, both or neither of the racks, for quadding, centring and normal operation respectively. The pinion is driven by a two-way rotary hydraulic motor 25 in both directions for closing and opening the jaws. The motor is controlled by a slide-valve unit 40, Fig. 11, constructed and operated as described in Specification 746,898. Liquid passing outwardly through conduit 45 passes to one side of the motor for jaw opening. Liquid passing through conduit 61, Fig. 7, from a selector valve 27 passes to the other side of the motor for jaw closing. The knob 23 sets the valve 27 to one of four positions, in three of which liquid passes from conduit 47 to valve 27 and through a passage 53 to conduit 61, for quadding or centring. In the fourth position, liquid from conduit 47 is returned to conduit 46 and the motor is by-passed, for normal machine operation. Means 66, 67 are provided to open and close the jaw 1 by a small increment to relieve pressure on the line for alignment of the matrices between first and second justification, as described in Specification 746,898, and the knob 23 also controls pawl means for locking the justification bar out of operation in quadding and centring operations, also as described in Specification 746,898. The mechanism may be modified for pneumatic operation.
Patent GB-847660-A (GB)
Title: Process and apparatus for the production of combustible gases
IPC: C01B3/46
Filed: 1956-11-14
Abstract: 847,660. Making combustible gas from hydrocarbons. SOC. DE CONSTRUCTION D'APPAREILS POUR GAZ A L'EAU ET GAZ INDUSTRIELS. Nov. 14, 1956 [April 6, 1956], No. 34887/56. Class 55 (2). In a cyclic catalytic process for making combustible gas from hydrocarbons, fuel is injected during a heating period through valve V1 and pipes 1 directly into the bed of catalyst C contained in the gas-making chamber and is burned therein by air introduced through valve V2 and line 2. This may be the sole form of re-heating, or means for having fuel outside the catalyst vessel may also be provided in known manner.
Patent GB-750197-A (GB)
Title: Improvements in or relating to stirring apparatus
Inventor: REAVELL BRIAN NOBLE
IPC: B01F15/00
Filed: 1953-12-15
Abstract: 750,197. Batch mixing-machines. KESTNER EVAPORATOR & ENGINEERING CO., Ltd. Oct. 29, 1954 [Dec. 15, 1953], No. 34893/53. Class 86. An apparatus for mixing liquids comprises a motor 10 disposed vertically on a housing 12, 13 near the respective ends of which are rotatably mounted vertical, hollow spindles 15, 16 which can be driven by the motor in the same direction or opposite directions through gearing disposed in the housing. Spindles 15, 16 respectively house the upper ends of depending shafts 17, 18 each carrying a propeller at its lower end, the housing being pivotally mounted on a clamp adapted to be secured to the side of the liquid container. The propeller axes are spaced apart a distance preferably equal to from one half to one and a half times the propeller diameter, which ensures that their zones of action are in interference thus giving increased mixing effect whilst preventing mass rotation of the liquid.
Patent GB-660117-A (GB)
Title: Improvements in or relating to projection screens
IPC: G03B21/56
Filed: 1947-12-31
Abstract: 660,117. Projection screens. JACOBSON, J. S. Dec. 31, 1947 [Feb. 7, 1940], No. 34911/47. Drawings to Specification. Class 97 (i). A rear projection screen is made of transparent or translucent material of which at least one side is covered with irregularities, whose faces are inclined to the virtual screen surface, where they intersect it, at angles between one and 45 degrees. The dimensions of the individual surface irregularities preferably lie between 0.5 and 5 mm. in the direction of the screen surface and between 0.25 and 2 mm. in the perpendicular direction. The individual irregularities preferably subtend at a viewer in the audience, angles between 0.1 minute of arc and several minutes. The screen surface may be rotated or reciprocated .in its own plane.
Patent GB-349267-A (GB)
Abstract: 349,267. Colour photography. SOC. FRANCAISE DE CINEMATOGRAPHIE ET DE PHOTOGRAPHIE FILMS EN COULEURS KELLER-DORIAN and VIDAL, J. L., 42, Rue d'Enghien, Paris. May 2, 1930, No. 13611. Convention date, May 2, 1929. [Class 98 (ii).] Colour record images made on a linear lenticular film are reproduced on another linear lenticular film whose lenticular elements are not parallel to those of the original film, by an optical projection system employing a diaphragm provided with apertures identical with the three areas which transmit the three primary colours when two tri-colour band filters, such as are used in taking the images, are superimposed upon each other with their colour bands parallel respectively to the lenticular embossings of the two films. Fig. 1 shows a projection system for reproducing an original film F on to a sensitized film Fl whose lenticular elements are inclined to those of the film F. In the focal plane common to the two symmetrical parts O, O<1> of the objective is placed a diaphragm D having apertures identical with the unshaded parts of Fig. 4, i.e. with the areas which transmit red, green, and blue when two band filters R, G, B, and r, g, b having their bands parallel respectively to the lenticular elements of the films F, F<1> are superimposed.