baber/WOPTO huggingface dataset:
Patent GB-454777-A (GB)
Title: Improvements relating to the projection of films narrower than standard
IPC: G03B21/20
Filed: 1936-04-23
Abstract: 454,777. Kinematograph projectors. JOST, C., 78, Albrechtstrasse Steglitz, Berlin.-(Assignee of Walter, F. ; 3, Hallesches Ufer, Berlin) April 23, 1936, No. 11636. Convention date, May 31, 1935. [Class 97 (i)] The illuminating system for narrow-film projectors comprises a large concave mirror 2 and a lamp 1 having a filament 4 of such shape, size, and disposition in relation to the mirror, that the light patch produced at the gate, without supplementary imaging means, is substantially coextensive with the gate aperture 3; the filament may be coiled and suspended in the form of a coil, and a supplementary condenser 6 may be provided between the lamp and gate to converge the light emitted by the filament on the side away from the mirror.
Patent GB-744816-A (GB)
Title: Complex esters
Inventor: MORTON RONALD WILLIAM
IPC: C07C69/34
Filed: 1952-05-08
Abstract: Complex esters containing at least 3 ester groups in linear arrangement are formed from dicarboxylic acids and dihydric alcohols with or without monocarboxylic acids and/or monohydric alcohols by esterification in two stages, there being collected, during each stage, the aqueous condensate from the reaction, characterized in that the volume of said aqueous condensate in the two stages does not exceed 95 per cent and 110 per cent respectively of the water theoretically available from the esterification.  The preferred complex esters contain glycols, dicarboxylic acids and monohydric alcohols and satisfy the equation X + 2Y = 2Z where X represents mols. of alcohol, Y represents mols. of glycol and Z represents mols. of acid. Preferably the glycol is a polyglycol, e.g. a polyethylene glycol up to and including hexaethylene glycol, the dicarboxylic acid is adipic or sebacic acid and the alcohol is a branched chain C8 or C9 saturated monohydric aliphatic alcohol and the proportions of the reactants are 1 mol., 2 mols. and 2 mols. respectively together with up to 40 per cent excess of monohydric alcohol.  Preferably the glycol and dicarboxylic acid are first reacted to give a glycol half ester and the product is reacted with the monohydric alcohol in the second stage.  Alternatively the dicarboxylic acid and alcohol may be first reacted and the product reacted with the glycol.  Benzene, toluene, xylene, close-cut naphthas or chlorinated solvents may be present as water entrainers.  Acid catalysts such as zinc chloride, sodium acid sulphate or p-toluene sulphonic acid may be added and the reaction may be conducted in an inert atmosphere and under reduced pressure.  It is found that simple diesters are formed in addition to the complex ester and a portion of the glycol forms dioxane.  In an example, polyglycol 200 (crude alkylene glycols predominantly tetraethylene glycol), sebacic acid and 2-ethyl hexanol are reacted in a two-stage process using a sodium bisulphate catalyst to form a complex ester with some di-2-ethylhexyl sebacate as by-product.  A product for which the aqueous condensate is 97 per cent and 118 per cent by volume of theoretical in the first and second stages is compared with a product, obtained according to the invention, for which the aqueous condensate is 93 per cent and 110 per cent, respectively, in the two stages.  Specification 659,103, 662,650, 664,992, 666,697, 668,663 and 699,402 are referred to.  The Provisional Specification refers also to complex esters formed from compounds containing both alcohol and acid-reacting groups.
Patent GB-468149-A (GB)
Title: Improvements in devices for increasing the lifting power of the wings of an aeroplane
IPC: B64C3/54
Filed: 1936-04-24
Abstract: 468,149. Increasing lift of aeroplane wings. CAPRONI, G., LONGO, A., and MATTIOLI, G. D. April 24, 1936, No. 11670. Convention date, April 24, 1935. Drawings to Specification. [Class 4] A device for increasing the lift of an aeroplane wing consists in a controllable obstacle or dragproducing device pivoted under the pilot's control at or near the trailing edge of the wing and being disposed at a suitable distance from the wing so as to provide an air space, between the wing surfaces and the element, through which an air current may pass. The device may be of streamline, circular, triangular or rectangular cross-section ; and in the case of a rod its diameter may be <1>/140 of the wing chord. The device may be secured to the trailing edge of an aileron and may be formed by a ribbon-like trailing portion of the wing, a space being provided between the device and the wing.
Patent GB-917329-A (GB)
Title: Process for decorating glazed and metal surfaces
Inventor: BOWMAN JOHN LAWRENCE
IPC: C03C15/00
Filed: 1960-11-09
Abstract: 917,329. Etching. HEATHERLEY FINE CHINA Ltd. March 30, 1961 [Nov. 9, 1960], No. 11698/61. Divided out of 907,368. Class 100 (2). [Also in Group XXIII] The process of etching a glazed or metal surface comprises cutting the pattern out of a film of etching resist material comprising a natural or synthetic resin, causing the resist film to adhere to the surface to be decorated, and treating with etching liquid, the pattern being cut out before or after the film is caused to adhere. The etching liquid is hydrofluoric acid.
Patent GB-838969-A (GB)
Title: Improvements in and relating to precision speed control for electric motors or othercyclically moving machine parts
Inventor: LESLIE WILLIAM HENDERSON PATER
IPC: H02P7/26
Filed: 1955-04-22
Abstract: 838,969. Automatic speed-control systems. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 20, 1956 [April 22, 1955], No. 11739/55. Class 38 (4). In an automatic speed-control system, the speed of a moving member is controlled by comparing a signal of frequency proportional to the speed of the moving member with that of a reference signal, and operating a controller by the error signal so as to reduce the magnitude of the error signal. A reference signal, from a crystal or tuning fork controlled oscillator (not shown), is fed via a terminal TA to an amplifier comprising valves TR1, TR2. The amplified signal is fed to a pulse-shaping network having a diode D1, resistors AR1-AR3, rectifiers NA, NB and a capacitor AC, from which two signals are derived to transfer the glow on the electrodes of a dekatron 5 in a predetermined direction. A signal applied to a terminal TB, of frequency proportional to the speed of an armature 2 of the motor being controlled, is shaped and amplified by a circuit comprising valves TR3, TR4, BE, and fed to a network similar to that for the reference signal but arranged to transfer the glow in the opposite direction. The output of the dekatron 5 is biased from a potentiometer 37 and applied through a resistor 33 to the control grids of three parallel-connected valves MV controlling the supply of current to the armature 2. A tacho-generator 2G applies velocity feed-back via capacitors 31, 32 to the resistor 33. Fields FW1, FW2 are. series-connected to the supply. A switch 34 transfers the connections of the dekatron 5 for continuous test running. It is stated that as long as the glow dwells on electrodes 1 or 9 the controller is at maximum adjustment and so remains until the frequencies of the signals are equal, and the only difference is a phase difference which causes the glow to move back and forth between adjacent electrodes. The dekatron may be replaced by a stepping relay or a capacitor charge-discharge arrangement. The D.C. power supplies are derived from a conventional stabilized power unit 22.
Patent GB-889529-A (GB)
Title: Pressure sensitive valve apparatus and hydraulic systems embodying such apparatus
Inventor: CROSS TERENCE JAMES
IPC: G05D16/16
Filed: 1957-04-10
Abstract: 889,529. Valves. H.M.L. (ENGINEERING) Ltd. June 18, 1958 [April 10, 1957], No. 11777/57. Class 135. Pressure-sensitive valve apparatus comprises a pilot valve device 1 of the piston-type loaded in one direction by a spring 23 and including a part 18 having a piston face subject to the pressure in a reference pressure chamber 15 opposing the spring, the pilot valve controlling communication between this chamber and pressure supply and relief ports 12, 10 respectively so as to maintain a constant pressure in the chamber, and a main valve device 2 of the piston-type having opposed pistons 28, 31, subject respectively to the pressure in the reference pressure chamber 15 and to a pressure supplied to a loading port 38 from a passage or conduit 47 the pressure in which is controlled by the main valve member 28, so that it is maintained in a predetermined relationship to the reference pressure in chamber 15. The conduit 47 constitutes a common delivery line of a number of hydraulic pumps 39-42 which feed this line through check valves 43-46, over-pressure in the line 47 being controlled by successive by-passing of the flows from the individual pumps, whose deliveries are connected also to successive inlet ports 33-36 of the main valve 2 and are relieved into a common return port 33a.
Patent GB-433767-A (GB)
Title: An improved feeding trough for brooders and the like
IPC: A01K39/014
Filed: 1935-04-16
Abstract: 433,767. Feeding and drinking appliances for poultry. JONES, E. H. P., 68, Willow Walk, Bermondsey, and STOW, A. A., 58, Mark Lane, both in London. April 16, 1935, No. 11787. [Class 5 (ii)] A feeding or drinking trough 3-particularly adapted for chickens in a brooder-is supported by pins 4 resting at the bottom of slots 6 in brackets 5 projecting from the front of the brooder and a wire mesh guard flap 2, hinged on hooks 8, depends across the front of the brooder compartment reaching nearly to the bottom of the trough 3. Pins 9 extend inwardly from the end of the trough on both sides of the guard flap and by rotating the trough on its pivots the guard flap may be swung about its hinges to expose more or less of the food in the trough in accordance with the size of the birds in the brooder. One or both of the pivot pins of the trough may be screw-threaded and provided with a wing nut to clamp the trough in its adjusted position. The inner edge of the trough is provided with a lip 10 to prevent the scattering of food and filling pieces 12 are fitted at the sides of the brooder to prevent chickens escaping when the flap 2 is open. The flap 2, which may serve as the front of the brooder compartment when the trough is detached, may be held in adjusted position by a pin thereon resting in notches at the bottom of an horizontal slot formed in one of the filling pieces 12.
Patent GB-1082414-A (GB)
Title: Process for cleaning the heating surfaces of rotary regenerative preheaters
IPC: C23G1/02
Filed: 1966-03-18
Abstract: The heating surfaces of rotating regenerative pre-heaters are cleaned by contacting with an aqueous solution of an acid e.g. a mineral acid, aminsulphonic acid or a hydroxypolycarboxylic acid. The solution may also contain orthophosphates, polymeric phosphates or complex forming compounds, and inhibitors e.g. mercaptobenzothiazole, diphenyl thiocarbamide, diorthotolyl thiocarbamide, dibenzl sulphonide, formaldehydeamine condensates or hydroxy piperidine.  The liquid may be sprayed on to the heating surfaces at 3-20 atmospheres. The surfaces may be subsequently neutralized and passivated with an alkaline-reacting solution.
Patent GB-386499-A (GB)
Title: An improved manufacture of metallic compositions
IPC: B22F1/17
Filed: 1932-04-26
Abstract: Metal compositions for bearings and other purposes are made by coating metal powder particles with another metal by electrodeposition and pressing the coated particles without the intervention of any non-metallic material.  Preferably heat is applied either during or after the pressing.  The base metal powder may be copper, iron, manganese, nickel, tungsten, molybdenum, antimony, &c., and the coating metal may be tin, cadmium, zinc, lead, copper, nickel, chromium, cobalt, silver, gold, platinum group metals, &c.  Products consisting of (1) 88-92 per cent of copper and 8-12 per cent of tin; (2) 60-70 per cent of nickel and 30-40 per cent of copper; (3) 88-90 per cent of copper, 9-10 per cent of tin and 2 per cent of lead; (4) iron and nickel; (5) iron, nickel, and chromium; (6) copper and zinc; (7) copper, zinc, and tin; and (8) copper, zinc, tin, and antimony, are referred to.  The pressure may be such that a certain amount of porosity is preserved.
Patent GB-353064-A (GB)
Title: Improvements in or relating to selective electric protection devices
IPC: H02H7/26
Filed: 1930-04-16
Abstract: 353,064. Protective cut-out systems. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ, 12, Place des Etats- Unis, Montrouge, Seine, France. April 16, 1930, No. 12086. Convention date, April 30, 1929. [Class 38 (v).] An A.C. selective protecting arrangement, has a combination of wattmetric or amperemetric relays capable of being affected only by the negative on the zero phase-sequence component of the power or of the current in conjunction with pilot wires and auxiliary sources of current so connected that in the event of a fault a current from the auxiliary sources flows by way of the pilot wires in the releasing coils of the circuit-breakers or of intermediate relays. As shown in the Figure, relays RW1, RW2, &c., at the ends of feeders F1, F2 &c., extending between sets of bus-bars BO1, B02, &c., control contacts 1, 2 in accordance with the direction of the negative or zero phase-sequence component of the current or power at the ends of the corresponding feeders. When an earth fault occurs, for example at M, relay contacts 2 at RW2 and 1 at RW3, are made so that the local source SA2 energizes the tripping circuits B2, B2<1> of circuit-breakers D2, D2<1> through a reaction of the pilot wire F so that only the faulty feeder F2 is disconnected. Many modifications of this system are described for differing circuit arrangements. Thus, with parallel feeders between stations, Fig. 2 (not shown), separate relays for each feeder may be employed controlling current from one or more common sources of tripping current or with single interconnecting feeders two relays at each feeder end and duplicated tripping arrangements may be provided to deal with conditions in which the point or points at which the system is earthed may be varied. Instead of directly controlling the tripping circuits the phase-sequence relays may themselves control auxiliary intermediate relays which control in turn the circuit-breaker tripping or releasing circuits. A single auxiliary supply may alternatively be provided for all the tripping arrangements and the pilot circuit may alternatively be provided with an earth return circuit. Instead of providing a single relay for jointly controlling both adjacent ends of feeders extending to intermediate bus-bar systems separate relays may be provided for each of these feeder ends. Figs. 8 and 9 (not shown) show in detail the connections for supplying and operating relays RW1, RW2, &c., with currents and voltages corresponding to the zero and negative phase-sequence components of the power in the adjacent feeders.
Patent GB-1534770-A (GB)
Title: Engraving of printing cylinders
IPC: G03F7/00
Filed: 1976-03-25
Abstract: 1534770 Facsimile RUDOLF HELL GmbH 25 March 1976 [25 March 1975] 12140/76 Heading H4F A stroboscopic tiring system for setting the commencement and termination of signal pulse trains controlling the scanning and engraving of respective cylinders 1 and 2, Fig. 1, in relationship to the rotation thereof, is described. A reference mark 53 on scanning cylinder 1 causes, upon passage beneath a detector 49, a "begin scan" pulse to be applied to the input of a discretely variable delay 56. The delayed pulse sets a flip-flop 59 which enables AND gate 26, to allow scanning pulses T3 to pass. The delayed pulse is simultaneously applied to a firing circuit 50 which causes a lamp 51 to flash. A microscope incorporating a reflex system views the area of the scanning cylinder immediately beneath scanning detector 15. Delay 56 is adjusted incrementally until at the time of each "flash" of lamp 51 the leading edge 47 of an original mounted for scanning, is exactly beneath detector 15. Firing circuit 50 is described in more detail, W.R.T., Figs. 2 and 4 (not shown). Delay 56 is described in more detail W.R.T., Fig. 3 (not shown). When an insert is to be engraved on a cylinder already partially engraved, a similar firing circuit (50<SP>1</SP>), Fig. 5 (not shown), and a similar discretely variable delay (117) are additionally employed for ensuring correct registration on the engraving cylinder. To this end a second microscopic and stroboscope (51<SP>1</SP>) are associated with the engraving mechanism, In order to ensure the correct distribution of scanned points along each scan line of the original, the "begin scan" pulse is further delayed by a line scan period and applied to the firing circuit at the end of a scan line. The scanning timing pulse frequency is adjusted whilst monitoring the strobed light to bring the final scan point into correct registration with the trailing edge of the original, Fig 6 (not shown). This requires the implementations of fine adjustment means to the scanning frequency generator which are comprised by fine level frequency dividers of the type described W.R.T., Figs. 7 and 8 (not shown). Accurate registration of colour separations is enabled by the system.
Patent GB-473413-A (GB)
Title: Improvements in and relating to rubber soled footwear
IPC: A43B9/08
Filed: 1937-04-28
Abstract: 473,413. Rubber-soled footwear. CONTINENTAL GUMMI-WERKE AKT.-GES. April 28, 1937, Nos. 12155 and 12156. Convention dates, Dec. 28, 1936 and Jan. 8, 1937. [Class 17 (ii)] The cloth or fabric upper d of a rubber soled turn shoe is sewr at e by an ordinary shoe-stitching machine to a piece of fabric c which is secured to'and projects above an upstanding flange b on the rubber sole a. The shoe is then turned to double-in the fabric c and conceal the stitching e, and an intermediate sole of felt or the like is placed inside the sole a. The flanged rim portion b may, before the shoe is sewn and turned, extend in the same plane as the sole a, a groove or the like preferably being employed at the outer contour of the rubber sole to facilitate upward bending of the rim after sewing.
Patent GB-579095-A (GB)
Title: An improvement in or relating to the withdrawal of liquids from containers
IPC: B65D88/54
Filed: 1944-06-27
Abstract: 579,095. Attachments for barrels &c. HILL, W. L. June 27, 1944, No. 12176. [Class 21] A hood b detachably connected to a drum a or other container encloses the tap a<1> and receives the inlet of a receptacle f so that lubricant or other liquid being run off is not exposed to the surrounding atmosphere. The receptacle has a lip f<1> by which it is supported in a cut-out portion of the hood and a door d has a flap d' which bears yieldingly against the receptacle to make a joint round it. The door can be secured by a padlock. and tools &c. may be stored in the hood. Instead of a cut-out portion, the hood may have an aperture closed, when the receptacle is withdrawn, by spring- loaded flap(s) which may be lockable from inside the hood. It is stated that means, which may be lockable, may be provided for operating the tap from outside the door.
Patent GB-270746-A (GB)
Title: Improvements in or relating to high tension electric discharge vessels
IPC: H01J5/06
Filed: 1927-05-06
Abstract: 270,746. Siemens - Schuckertwerke Ges. May 8, 1926, [Convention date]. R÷ntgen-ray tubes; vacuum tubes.-In hightension, hot-cathode discharge tubes such as X- ray tubes, in which spaced sockets 8, 7 are provided for leading in the anode 2 and cathode 3 respectively, the sockets are each provided with a conducting coating or lining surrounding, and electrically connected to, the respective lead. The sockets 7, 8 may be re-entrant and of glass internally coated with metal, the coating on the socket 8 being connected to the anode lead 4 and that on the socket 7 to one of the cathode leads 5, 6. The leads are thus in a fieldless space and discharges on them are prevented; also small currents flowing between the leads through the glass bulb enter the bulb over a large area and do not heat the glass adjacent the leads. The linings may be of silver, platinum, copper, aluminium or tin and may be applied as foil, by spraying, by electrolysis, or by electrical disintegration of an incandescent wire. Caps 9, 10 cover the sockets 7, 8. The Specification as open to inspection under Sect. 91 (3) (a), comprises also the connection of the linings to the leads through resistances or the like. This subject-matter does not appear in the Specification as accepted.
Patent GB-189400-A (GB)
Title: Improvements in the manufacture of chocolate cakes
IPC: A23G1/22
Filed: 1922-05-02
Abstract: 189,400. Walton, F. W., and Beech's Chocolates, Ltd. May 2, 1922. Confectionery and sweetmeats.-A cake of chocolate 2, which may contain nuts or other solid ingredients, is provided with a number of deep, narrow cuts 1, deep enough to ensure the cake breaking accurately along a predetermined line. The cuts 1, which may be sawn or otherwise effected after the cake has been moulded, may be made in addition to the usual shallow grooves 3.
Patent GB-932528-A (GB)
Title: Fluid-conducting hose
IPC: B29D23/00
Filed: 1962-03-30
Abstract: 932,528. Flexible hoses. W. S. MURRAY. March 30, 1962, No. 12309/62. Class 99(2). A hose comprises an outer woven textile jacket 11 surrounding but spaced from an inner waterproof tube 14 which is formed of a textile sheet 15 coated on both sides with a waterproof layer 16 and which is bonded to the jacket by a flexible water-insoluble adhesive 17 that fills the space and penetrates the jacket and secures the tube to both the warp strands 12 and the filler strand 13 of the jacket. The tube 14 is constructed of cotton or a synthetic fibre and coated on both sides with natural or synthetic rubber, or a flexible, synthetic plastic; the tube is inserted into the jacket and a liquid adhesive, such as latex cement, is poured into the space between the tube and jacket, a ram 18 then being forced through the tube by fluid pressure to cause the adhesive to penetrate the interstices of the jacket. The adhesive is then cured by heating, e.g. by steam when the latter fluid is used to propel the ram.
Patent GB-1369308-A (GB)
Title: Process and furnace charge for use in the production of ferrosilicon
IPC: C22C33/04
Filed: 1972-03-16
Abstract: 1369308 Production of ferrosilicon UNION CARBIDE CORP 16 March 1972 [17 March 1971] 12313/72 Addition to 1335351 Heading C7D A process for the manufacture of Fe-Si having 45-95% Si comprises forming homogeneous agglomerates from (a) a carbonaceous reducing agent, e.g. coal, coke  (b) an iron-bearing material, e.g. iron oxide, (c) silica, (d) a bulking agent, e.g. drystraw, crushed corncobs, sawdust, (e) a binder. (a) and (b) are 100 mesh or finer, and (c) is in two fractions; a fine fraction of 48 mesh or finer, and a coarse fraction between 1/16" and ¢" diameter. The agglomerates are introduced to an electric arc furnace to produce the Fe-Si. The amount of (a) is between 85% and 120% of that stoichiometrically required for the reaction SiO 2 +2C # Si + 2CO. The average bulk density of the agglomerate is lower than 601b/ft<SP>3</SP>, and the ratio of fine SiO 2  to coarse SiO 2  is 0À5 to 2À0.