baber/WOPTO huggingface dataset:
Patent GB-1347408-A (GB)
Title: Luminescent lamp control
IPC: H05B41/04
Filed: 1971-04-19
Abstract: 1347408 Control systems for fluorescent lamps NOVANEX AUTOMATION NV 19 April 1971 [17 April 1970] 27280/71 Heading H2H A circuit arrangement for starting and/or controlling the light output of a luminescent lamp 1 comprises an installation as shown in Fig. 1, the device 6 being as shown in Fig. 3. The device 6 thus comprises a capacitor 13 for interference suppression and an inductor 14 in series with a triac 15 connected across terminals 11, 12. The firing pulses for the triac 15 are derived from a circuit having resistors 20, 22, capacitors 19, 21 and a diac 18. Before the lamp has started the firing circuit will develop a firing pulse for the triac 15 a predetermined time after the circuit arrangement has been switched on. When the triac fires for the first time a pulse will be applied to the lamp to start the lamp. Thereafter pulses will be applied to the triac, the firing of which virtually short circuits the lamp 1. Thus by controlling the instant of firing of the triac 15 by variation of the resistor 22 control of the luminous intensity of the lamp 1 may be effected. As shown in Fig. 5 a further control of the light output of the lamp may be made by using a variable transformer 9 to supply the operating voltage for the circuit arrangement. Numerical values for the components in the circuit of Fig. 3 are given.
Patent GB-864534-A (GB)
Title: Improvements relating to vehicle shields
IPC: B60J1/20
Filed: 1957-08-29
Abstract: 864,534. Vehicle windshields. VICKERS, J. March 24, 1958 [Aug. 29, 1957], No. 27282/57. Class 20(3) A windshield clipped to a vehicle window frame comprises a first portion 2 adapted to fit along the upper part of the window frame and a second transparent curved portion 5, attached to the first and adapted to fit along the forward edge of the frame and extending rearwardly along a part of the lower frame.
Patent GB-1429803-A (GB)
Title: Process for the production of silicate foams
IPC: C04B28/26
Filed: 1973-06-08
Abstract: 1429803 Silicate foams BAYER AG 8 June 1973 [10 June 1972] 27335/73 Heading C1A A rigid alkali metal silicate foam is produced by mixing an aqueous silicate solution with air and prior to, during or after the mixing adding a hardener comprising at least one covalent compound which is capable of liberating a mineral, carboxylic, sulphonic or phospnonic acid under aqueous conditions. Preferred hardeners are carboxylic acid chlorides, chloroformic acid esters, isocyanide dichloride or a sulphonic acid chloride. Gelling agents, emulsifiers, detergents, foam stabilizers and wetting agents as in conventional silicate foams may also be present.
Patent GB-379538-A (GB)
Title: Improvements in or relating to electric rectifiers
IPC: H01L29/24
Filed: 1931-10-01
Abstract: 379,538. Static contact rectifiers. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Oct. 1, 1931, No. 27342. Convention date, Oct. 8, 1930. [Class 37.] A material yielding oxygen, for example, potassium permanganate, barium peroxide or potassium chlorate, is mixed with the material constituting one of the electrodes. The electrodes may comprise metals of the zirconium and titanium group, or one of the electrodes may comprise magnesium, aluminium or an amalgam thereof, the other electrode consisting of a mixture of cuprous and cupric sulphide and potassium permanganate. In one construction, the plate 1 comprises zirconium coated with an oxide layer 2 the other electrode comprising a mixture of copper iodide and barium peroxide pressed in powder form on copper gauze 4. Calcium may be employed as the cathode and the anode may consist of phosphorus, lead or molybdenum sulphide, iron hammer scale, sesquioxide of manganese, silver chloride, or mixtures of these materials.
Patent GB-969190-A (GB)
Title: Method of treating tobacco to improve its smoking properties and ash colour
IPC: A24B15/28
Filed: 1963-07-11
Abstract: To improve its smoking properties and the colour of the ash tobacco is treated with albaline-earth salts or organic peroxy acids e.g. magnesium performate.  The salt may be added to the tobacco in form of a suspension or added to the normal sauces used in tobacco treatment in the proportion of 0.1 to 5% of the treated tobacco weight.
Patent GB-505654-A (GB)
Title: Improvements relating to valve arrangements in fluid pressure systems
IPC: F16K15/04
Filed: 1937-10-11
Abstract: 505,654. Hydraulic transmission of power; aircraft controls. DOWTY, G. H. Oct. 11, 1937, No. 27576. [Classes 69 (ii) and 135] [Also in Group XXXIII] A hydraulic system comprising pressure generating means, receiver means and a hydraulic circuit therebetween, includes a valve and union device for making a temporary branch connection to the circuit, so constructed that making the said temporary connection moves the valve so as to open it for flow through said branch against which flow it is normally closed, and to close it against flow through the circuit, for which flow it is normally open. A device 9 is provided in the pipe 4 leading from the pump 3 to the control valve 5, and a similar device 9A is provided in the pipe 8 leading from the control valve 5 to the reservoir 1. The device 9 includes a ball 10 normally, urged by a spring 11 on to a seat 12 whereby the two parts of the pipe 4 are in communication. On removal of a capping plug and insertion of a union plug 18, a seat 20 on the latter acts through a push rod to lift the ball 10 from the seat 12 and press it on to a seat 21 whereby the horizontal line 4 is cut off from the vertical line 4 but placed in communication with the pipe 19. The push rod comprises two. parts 13, 14 separated by a compression spring 15 to prevent excessive loads being transmitted by the composite push rod. The invention is stated to be particularly applicable to the hydraulic systems of aircraft; thus, when the aircraft is on the ground, an auxiliary pressure source can be plugged in at 9 for replenishing the system or for testing the valve 5 and slave units ; in the latter case, a reservoir may be plugged in at 9A to prevent overcharging of the system. Alternatively a reservoir may be plugged in at 9A for relieving the system of liquid. Specification 480,674 is referred to.
Patent GB-519441-A (GB)
Title: Improvements in or relating to packing devices for pistons and the like
IPC: F16J9/20
Filed: 1938-09-22
Abstract: 519,441. Piston packing. AUTOMOTIVE PRODUCTS CO., Ltd., and CLENCH, E. C. S. Sept. 22, 1938, Nos. 27696/38 and 12416/39. [Class 122 (i)] A piston or like packing comprising a packing ring composed of a plurality of thin frustoconical rings 17, of metal or vulcanized fibre, capable of sliding upon one another and extending from the inside to the outside curved surfaces of the packing ring is constructed' so that the rings are supported by a frustoconical abutment 20, which preferably has a cone angle greater than that of the rings so that the rings can readily be pressed against the sliding surface of the piston or cylinder by fluid pressure. The rings are formed as superimposed separate rings, or of a helix of thin strip material with frusto-conical turns, and washers may be arranged between the rings. In Fig. 1 the rings are held to a piston 11 by means of a screwed sleeve 16 the lower edge of which is chamfered to suit the obliquity of the layers 18 of a wound helix or phosphor bronze, or tempered steel. In Fig. 2 the packing ring 17 is formed of number of washers of sheet vulcanized fibre formed with a central plane portion 27 and outer frusto conical parts 28 which are pressed into contact with the cylinder by a spring-pressed collar 34. The washers 28 are clamped between collars 25, 26 the collar 25 being formed with an abutment 20. In a modification of the device shown in Fig. 2 the ring 17 is arranged to act inwardly against a sliding plunger rod, and in a further modification, Fig. 5,-the rings 17 are shaped to provide a seal at both their inside and outside curved surfaces with a piston rod 9 and a cylinder 10. The piston head 11 is formed with an annular groove 45 somewhat U-shaped in cross-section and a clamping-member 47 of similar shape is operated by a nut 13 to hold the rings in place.
Patent GB-895698-A (GB)
Title: Improvements in metallurgical heat treatment furnaces
Inventor: ELLIS CHARLES CLAYDON
IPC: C21D1/74
Filed: 1958-08-28
Abstract: 895,698. Rotary heat-treatment furnaces. WILD-BARFIELD ELECTRIC FURNACES Ltd. Aug. 28, 1958, No. 27700/58. Class 51 (2). A heat treatment furnace of the rotary drum type, comprises a drum 9 having a frusto-conical treatment section with skewed lifters 17 and a cylindrical section 10 with an outlet 18 and discharge screw 16, electrically heated radiant tubes 8, discharge shoots 20, 24 leading to a quenching tank 7, and a work extractor screw 25 with its lower end in said tank. When the drum is rotated in one direction the lifters 17 tumble the work and, on reversal, the screw 16 feeds it through the outlet 18. Treatment gas is admitted at 21 into the shoot 20 and discharged through a burn-off pipe 22 in a charging door 23.
Patent GB-948367-A (GB)
Title: Improvements relating to scanning circuit arrangements
Inventor: WARMAN BLOOMFIELD JAMES
IPC: H04Q3/00
Filed: 1961-07-31
Abstract: 948,367. Automatic exchange systems. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 27, 1962 [July 31, 1961], No. 27720/61. Heading H4K. In an arrangement for scanning line circuits, 10,000 coincidence gates G one for each line circuit are divided into 10 groups GR1 . . . GR10 in each of which the gates are disposed in co-ordinate fashion in 10 columns and 100 rows, and a cyclic counter PC supplies pulses in succession to the columns of the first group, then to those of the second group and so on. The outputs from each row of gates are multipled and taken to gates (1) OG1 . . . (1) OG100 and so on, and the corresponding output gates from the various groups, e.g. (1) OG1 . . . (10) OG1 are pulsed in succession by a second cyclic counter SC which delivers a pulse for each cycle of the counter PC. The functions of the two counters may be interchanged, in which case the order of scanning is altered. The arrangement may be used for detecting a particular condition, such as a line circuit locked out as the result of a permanent loop, when a characteristic bias is applied to the input Vm of the corresponding gate. Assuming that such a condition exists, the coincidence of pulses from PC, SC on the relevant detection gate, e.g. G1, and output gate, e.g. (1) OG1, results in a pulse on lead ogl which sets a bistable element BE and thus stops the generator 1G driving the counters PC, SC. A signal on lead il indicates to an external circuit that the identity of the marked circuit is available over leads mpc, msc, and when this information has been transferred, a signal on lead sl resets BE and restarts scanning. If the external circuit can respond quickly enough to the identity signals, the stoppage of scanning becomes unnecessary and the circuit BE is not required. The scanning arrangement is described in greater detail with reference to Figs. 2-4 (not shown).
Patent GB-1014536-A (GB)
Title: An improved handle for containers
IPC: A47J45/07
Filed: 1963-07-12
Abstract: 1,014,536. Handles for containers. H. C. STRINGER. May 13, 1964 [July 12, 1963], No. 27777/63. Heading B8D. A detachable handle for a paint can is formed as shown of resilient wire, preferably of spring steel.
Patent GB-1100014-A (GB)
Title: Improvements in or relating to a rotary switch
IPC: H01H9/04
Filed: 1965-06-30
Abstract: 1,100,014. Mechanical switches, without quick action. STACKPOLE CARBON CO. 30 June, 1965 [30 June, 1964], No. 27814/65. Heading HlN. A rotary switch comprises a plurality of separate and distinct stator members 12, each having one or more contacts 38, 40 formed from a single sheet metal stamping, stator members 12 being assembled side by side and contiguously to form a space 24 between the stator contacts, and a rotor 26 being disposed in space 24 and carrying at least one moving contact 32 for bridging related pairs of contacts of adjacent stator members, the moving contact 32 having limited movement within the rotor to engage the contacts. Each stator member is formed from a metal stamping (42), Fig. 10 (not shown), moulded in an insulating disc 16 and parts (denoted by dotted lines in Fig. 10) cut away to leave contacts 38 connected to terminals 48, and idler contacts 40. The rotor 26 comprises a disc 28 containing through openings 30 into which contacts 32 or elliptical cross-section coiled spring contacts (164), Fig. 13 (not shown), are fitted. The stator members 12 and end bells 20 and 18 are clamped together with rivets 22 with seating rings 64 in recesses. Sealing rings 153 are provided on shaft 34 which carries a spring detent plate 126 with projections 122, 124 to engage cam surface 120 formed by flats (128, 130), Fig. 9 (not shown), in end bell 18. Stamping (42) may be of silver, silver alloy, or brass.
Patent GB-1469959-A (GB)
Title: Perfluoro-alkylethanediols process for their manufacture and their use
IPC: D06M13/148
Filed: 1974-06-24
Abstract: 1469959 1 - Perfluoroalkyl - 1,2 - ethanediols CIBA-GEIGY AG 24 June 1974 [27 June 1973] 27941/74 Heading C2C [Also in Division D1] 1 - Perfluoroalkyl - 1,2 - ethanediols of general formula wherein R is a C 4-17  perfluorinated or #-H- perfluorinated aliphatic hydrocarbon radical and R 1  is H or CH 3 , are prepared (a) by hydrolysis of perfluoroalkylethandiols of general formulµ either singly or in admixture under acid conditions or (b) by acid or alkaline hydrolysis of a perfluoroalkyl epoxide of general formula Amongst the examples the compound is prepared. 1 - Perfluorooctyl - 1 - hydroxy - 2 - acetoxy ethane is prepared by reacting perfluorooctyl ethylene oxide and glacial acetic acid in the presence of triethylamine.
Patent GB-1030028-A (GB)
Title: Preparation of synthetic lubricating oil
IPC: C08F10/00
Filed: 1964-07-07
Abstract: A synthetic lubricating oil is obtained by polymerizing a C6-C14 straight chain alpha olefin at 0-50 DEG  C. in presence of a catalyst system formed from an aluminium alkyl sesquichloride, the alkyl group containing 1 to 10 carbon atoms, titanium tetrachloride and a tertiary amine oxide or aromatic amine oxide, the proportions of said constituents being such that the atomic ratio of Al : Ti is 0.5 to 2.5 : 1 and the atomic ratio of O: Al is 0.2 to 0.6 : 1. The reaction may take place in presence of a saturated hydrocarbon or a halohydrocarbon as solvent.  Specified solvents include pentane, hexane octane decanes and dimethylcyclohexane, halobenzenes having 1 or 2 halogen atoms which may be chlorine or fluorine or both, trihaloethanes, tetrahaloethanes, trihaloethylenes and tetrahaloethylenes.  In the absence of a solvent the olefin to titanium tetrachloride weight ratio is preferably above 100 : 1. The term "tertiary amine" refers to amines in which the nitrogen is attached to three different carbon atoms, two or three of which may be in the same molecule, e.g. trimethyl and triethylamines, triphenylamine, N-methylpiperidine and quinuclidine.  The term aromatic amine refers to heterocyclic aromatic compounds, wherein the nitrogen is attached to two carbon atoms, e.g. pyridine, a , b , or g -picolines, quinoline, quinaldine, lepidine and acridine. The product is distilled to recover material boiling above 650 DEG  F. which may be hydrogenated at 150-250 DEG  C. and a hydrogen pressure of 1000-2500 p.s.i.g. using Raney nickel.ALSO:Catalysts, used in the polymerization of C6-C14 straight chain olefins to prepare lubricating oils, are formed from an aluminium alkyl sesquichloride, titanium tetrachloride and a tertiary amine oxide or aromatic amine oxide the proportions of these constitutes being such that the atomic ratio of Al : Ti is 0.5 \sS 2.5 : 1 and the atomic ratio of O : Al is 0.2 to 0.6 : 1.  Examples, of amine oxides are trimethyl and triethyl amines, triphenylamine, N-methylpiperidine, quinuclidine pyridine, a , b  or g  picolines, quinoline, quinaldine, lepidine and acridine.
Patent GB-1425938-A (GB)
Title: Cervical dilators
IPC: A61F2/82
Filed: 1972-06-15
Abstract: 1425938 Cervical dilators DERRITRON ELECTRONICS Ltd 14 June 1973 [15 June 1972] 28033/72 Heading A5R A cervical dilator comprises a holder supporting a probe for insertion into the cervix, and an electromagnetic vibrator arranged to impart vibration to the holder and probe in a direction transverse to the length of the probe. The probe is rigidly secured in a socket 12 on a casing 10 shaped to facilitate holding in the hand and containing an elongated armature pivoted about axis 35 and provided with an AC coil 36. A pair of parallel pole pieces 46, 47 extend on opposite sides of armature 34 and are joined by a yoke 48 carrying a DC coil 49. The structure 46-48 is rigidly secured in casing 10 and armature 34 carries a weight 40. In a modification the pole pieces 46, 47 are connected by one or more yokes incorporating permanent magnets. In a further modification the armature is rigidly secured in the casing and the structure 46-48 pivotally mounted.
Patent GB-1418288-A (GB)
Title: Anti-hypertensive compositions
IPC: A61K31/445
Filed: 1972-12-08
Abstract: 1418288 Anti-hypertensive composition SANDOZ LTD 8 Dec 1972 [10 Dec 1971] 28245/75 Divided out of 1417864 Heading A5B An anti-hypertensive composition comprises (a) 4(2-hydroxy-3-iso-propylaminopropoxy) indole and (b) clopamide(N-(cis-2, 6-dimethylpiperidyl-1)-4-chloro-3-sulphamoyl benzamide. Ingredient (a) is generally used as the maleate salt.
Patent GB-407430-A (GB)
Title: Improvements in ice-making containers
IPC: F25C1/24
Filed: 1932-10-11
Abstract: 407,430. Ice-making. COPEMAN, L. G., 212, Smith Street, Flint, Michigan, U.S.A. Oct. 11, 1932, No. 28266. [Class 29.] Holes 6 are provided in the integral or separate partitions 2 of ice-making trays formed of rubber or other non- metallic flexible material so that the compartments are supplied evenly during filling. The beaded rim 3 of the tray may have a wire reinforcement 4 which may be continued down the four corners of the tray. The tray is flexed to discharge the frozen blocks.
Patent GB-675082-A (GB)
Title: Improvements in pipe couplings
IPC: F16L19/08
Filed: 1950-11-20
Abstract: 675,082. Pipe joints. KAY, F. Nov. 20, 1950, No. 28302/50. Class 99 (i) In a stuffing-box type joint in which the sealing and securing ring 8 has annular teeth to bite into the pipe, each V- shaped tooth has a surface 12 approximately at a right angle to the axis of the joint. Specification 661,465 is referred to.
Patent GB-685666-A (GB)
Title: Improvements in or relating to folded cardboard containers
Inventor: LINGE ARENT EVERHARDUS VAN
IPC: B65D5/498
Filed: 1950-11-21
Abstract: 685,666. Boxes. VEENDAMMER CARTONNAGEFABRIEK N.V. Nov. 21, 1950. No. 28386/ 50. Class 18 A cardboard container for butter comprises four side walls 2 ... 5 foldable up about a base portion 1, two opposite side walls 4, 5 having flaps 6, 7 and 8, 9 which are inturned and lie against the inside faces of the side walls 2, 3, the flaps either interengaging beneath the edges of strips 10, 11 centrally secured and the side walls 2, 3 or abutting a central partition formed by portions 15, 19 secured to the side walls 2, 3 and thereby being prevented from sliding inwardly. The desirability of preventing the inward movement of the flaps is to resist distortion of the container when a number of them are stacked one on top of the other. A separate slidable lid is provided and comprises a top portion with downturned side walls, the walls being surrounded by a rectangle of cardboard slidable over the side walls of the lid.
Patent GB-898638-A (GB)
Title: Apparatus and method for positioning an underwrap sheet beneath material to be wrapped
IPC: B65B27/08
Filed: 1960-08-17
Abstract: 898,638. Severing webs. GLOBE & MAIL Ltd. Aug. 17, 1960 [Sept. 4, 1959],No. 28466/60. Class 31 (1). [Also in Group XVII] A device for severing a web 98 in a wrapping machine (see Group XVII) comprises a blade 162 flanked by spring-loaded guards 166, 168 and carried in a fixed channel member 148. A grooved rubber strip 184 in a channel 182 is normally biased upwards by springs 194 but is depressed to sever the web by solenoid armatures 210. The channel 182 slides on fixed bolts 178 and is connected to the armatures by rods 198.
Patent GB-672004-A (GB)
Title: Improvements in or relating to electron-optical image converter tubes
IPC: G02B27/32
Filed: 1950-11-22
Abstract: 672,004. image converter tubes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Nov. 22, 1950 [Nov. 25, 1949], No. 28548/50. Class 39(i). In an electron-optical image converter tube the support of the photo-electrically active layer of the cathode also supports a layer adapted to be projected electron-optically on to the projection screen as a reference mark. As shown, the glass portion 2 is coated intern. ally with a thin but opaque aluminium layer 4, a window being formed by placing a mask on the inner wall 2 during the application of the layer. The mask has an aperture consisting of four slits forming a small cross, the point of intersection of which is in the axis of the tube, thus providing a cross 14 on the wall of the tube. A second very thin transparent layer 7 of silver activated by means of oxygen and caesium vapour extends over the layer 4 and forms a photo-electric cathode. The re-entrant portion of the tube carries a fluorescent screen 9 and an anode 10, the cathode-rays passing through an aperture 12 and being focused to produce an image on the screen 9.
Patent GB-1129903-A (GB)
Title: Dihydropyranyl polyesters
IPC: C08G63/668
Filed: 1965-07-06
Abstract: 1,129,903. Dihydropyranyl polyesters. IMPERIAL CHEMICAL INDUSTRIES Ltd. 7 June, 1966 [6 July, 1965], No. 28574/65. Heading C2C. [Also in Division C3] The invention comprises dihydropyranyl polyesters of either of the formulµ in which R denotes a divalent aliphatic radical of up to 4 carbon atoms, n 1  and n 2  are integers of at least 2, A denotes a linking aliphatic radical having a valency equal to n 1  and Ar denotes a linking aromatic radical having a valency equal to n 2 . The esters may be prepared by the conjoint reaction, in the presence of an ester exchange catalyst, of a dihydropyranyl compound carrying a hydroxy group, an ester of an aromatic polycarboxylic acid and an aliphatic polyhydric alcohol. Alternatively, the reaction may be effected in two stages, in the first of which a compound containing two dihydropyranyl rings linked by a single ester linkage, such as a compound of the formula is reacted with an ester of an aromatic polycarboxylic acid, e.g. dimethyl phthalate, to yield, e.g., the methyl ester of dihydropyranyl carboxylic acid and a methyl dihydropyranyl methyl phthalate; the first-named product is distilled off and, in the second stage, the residual mixed phthalate ester is reacted with an aliphatic polyhydric alcohol to produce the dihydropyranyl terminated polyester. As a further alternative, an ester of an aromatic polycarboxylic acid, an aliphatic polyhydric alcohol and a compound of the type of the third formula above may be reacted in a single step with the aid of an ester-exchange catalyst. Besides dimethyl phthalate, specified esters of aromatic polycarboxylic acids for use in the process are diethyl phthalate, dimethyl terephthalate, tetramethyl pyromellitate and trimethyl trimellitate. Specified polyhydric aliphatic alcohols are ethylene glycol, 1,5-pentanediol, glycerol, 1,2,6 - hexanetriol, polypropylene glycols, castor oil, sugar alcohols and polyether condensates of polyhydric alcohols and olefine oxides. Examples are given. The products are useful in the manufacture of foamed cellular polymers (see Division C3).