baber/WOPTO huggingface dataset:
Patent GB-941894-A (GB)
Title: Separation of isobutene from gases
Inventor: PLATZ ROLF
IPC: C07C7/17
Filed: 1961-05-29
Abstract: <PICT:0941894/C3/1> Isobutene is separated from gases containing it by reaction with a solution comprising a C1-C4 aliphatic carboxylic acid and an inorganic acid or boron trifluoride catalyst and recovering isobutene from the ester formed by adding water and heating.  Suitable carboxylic acids are formic, acetic, propionic and butyric containing not more than 5% by weight of water and to which is added 0.1-10% by weight of boron trifluoride, perchloric acid or sulphuric acid.  Absorption is effected at 0-40 DEG  C. Desorption is achieved by adding 0.3-30% by weight of water to the solution and heating to 80-140 DEG  C.  In a continuous operation, the gas is supplied through pipe 2 and is contacted with absorption solution from pipe 3 in column 1. The solution flows through column 7 and condenser 8 to vessel 9 where water is added by pipe 11 and the solution is heated. Isobutene is removed by pipe 10 and also flows up through column 7 in counter-current to the solution, thereby stripping out undesired materials.  The desorbed solution flows to vessel 14 where an azeotrope, e.g. of propionic acid and water, is distilled off by pipe 15 and used as the source of water for pipe 11 leaving acid which is cooled and recycled to pipe 3.
Patent GB-961564-A (GB)
Title: Purification of poliomyelitis virus
IPC: A61K39/13
Filed: 1961-05-29
Abstract: A process for concentrating and purifying polioviral substance (poliovirus or polioantigen containing filtrates or solutions) which comprises adjusting the pH and ionic strength of a concentrated and relatively purified solution of polioviral substance to between pH 3.5 and ionic strength from 0.87 to 1.55 and pH 4.5 and ionic strength from 0.53 to 3.6 and separating the precipitate so formed from the virus containing fluid, e.g. by centrifugation.  The pH is obtained by the addition of acid, the ionic strength by the addition of any ionizable salt, e.g. sodium chloride (preferred), potassium chloride, caesium chloride, calcium chloride, magnesium chloride, sodium sulphate, ammonium sulphate, ammonium chloride, sodium nitrate or potassium nitrate. The process is particularly suitable for further purifying the poliomyelitis virus solution obtained by nucleic acid precipitation at pH 1 to 4, followed by enzymatic digestion at pH 4.5 to 9 with (a) ribonuclease and (b) ficin preferably activated with cysteine, according to Specification 871,838.
Patent GB-1371014-A (GB)
Title: Labyrinth shaft seals
IPC: F01D11/02
Filed: 1973-04-24
Abstract: 1371014 Labyrinth shaft seals BBC BROWN BOVERI & CO Ltd 24 April 1973 [26 April 1972] 19284/73 Heading F2B  A labyrinth shaft seal comprising a rigid main body 4 and labyrinth segments 5 housed in the body for radial movement therein relative to the shaft 1, is sealingly connected to the end wall 2 of a casing 3, e.g. the low-pressure casing of a turbine, by an elastic flange 6 which extends between the body and the wall and is less rigid than the wall. The body is made in two parts connected by screws (not shown). The flange 6, which may be of stainless steel, may be connected permanently to the body 4, e.g. by welding, and may be made in two parts, its abutting edges being sealed by a removable head attached by welding. It may also be joined to the wall 2 by welding but preferably is connected by screws 8 to a flange 7 of the wall 2.
Patent GB-1508240-A (GB)
Title: Diverter valve for plumbing fixtures
IPC: F16K24/06
Filed: 1976-05-11
Abstract: 1508240 Valves AMERICAN STANDARD Inc 11 May 1976 [23 Sept 1975] 19301/76 Heading F2V A diverter valve for incorporation in a mixer valve and for connecting an inlet chamber 34 to first outlet openings 39 or a second outlet 73 includes a tubular member 60 carrying a closure member 90 and which is moved from a position (shown), in which the member 90 prevents communication between the chamber 34 and the first outlet openings 39 and flow takes place through the member 60 to the  second outlet, to a second position in which flow takes place from the chamber 34 to the openings 39, when a hand-operated valve on a spray head (20) connected to the second outlet 73 is closed. Pressure build-up in the second outlet on closing the spray head valve acts on the piston 73 to move the tubular member to the second position. A duck-bill check valve 84 integral with the closure member 90 prevents back flow from the second outlet into the inlet chamber while a disc check valve 58 prevents back flow from the inlet chamber. The valve housing is moulded of acetal or polysulphone resin or a mixture of polystyrene and polyphenylene oxide. The cap 50 is ultrasonically welded into position.
Patent GB-570280-A (GB)
Title: Improvements in or relating to lens systems
IPC: G02B13/00
Filed: 1943-11-22
Abstract: 570,280. Lenses. JEFFREE, J. H. Nov. 22, 1943, No. 19525. [Class 97 (i)] In an astigmatic lens system a collective group 13 and 14 having one or more of the refracting surfaces aspherical, is disposed between two similar plano-concave dispersive elements 11 and 12 .to form a collective lens system; the direction of departure from sphericity towards the margin of the aspherieal surface or surfaces being such as to diminish the collective power of that component for marginal rays of light. In the system shown, the collective components 13, 14 have the outward facing surfaces hyperboloidal and are formed of a methyl methacrylate polymer, while the dispersive components 11 and 12 are of polystyrene. The plane surfaces may be protected by plane glass 15 and 16. Specifications 416,398, 556,743, [Group XI], and 561,503 are referred to.
Patent GB-684826-A (GB)
Title: A motor vehicle door checking and holding device
IPC: E05C17/32
Filed: 1951-08-20
Abstract: 684,826. Door-operating appliances; stays for hinged articles. FORD MOTOR CO., Ltd. Aug. 20, 1951 [Dec. 1, 1950] No. 19585/51. Class 65 (i) A door 11 of a motor vehicle hinged at 13 to the body 12 of the vehicle, is urged to and held in the open position by means of a pair of links 23, 24 pivotec together at 26, and pivoted to the body and door respectively at 27 and 28, spring means 30 acting on the links to urge the lattet pivotal connections apart, and the pivot 28 being substantially aligned with the pivot 27 and the hinge axis of the door when the latter is closed. In the open position link 23 abuts a flange 34 formed on an extension of link 24. In a modification wherein the hinge axis is inclined to bias the door by gravity in the closing direction, pivot 28 is offset sufficiently outwardly from the line joining the pivot 27 to the hinge axis to counterbalance the door in the closed position.
Patent GB-1142904-A (GB)
Title: Improvements in or relating to contact devices for electric relays
IPC: H01H50/54
Filed: 1967-04-28
Abstract: 1,142,904. Contact devices for relays. SIEMENS A.G. 28 April, 1967 [2 May, 1966], No. 19593/67. Heading H1N. Contact springs controlled by a relay armature and having co-operating rubbing faces have a synthetic plastics layer interposed between the rubbing faces to provide uniform damping of contact bounce throughout the life of the relay. As shown the springs 3, 4 are mounted on the rotatable armature 1 of a polarized relay (Figs. 3 and 4, not shown) to co-operate with alternative fixed contacts 6, 7. A synthetic plastics layer 2 is situated between the rubbing contact ends 3b, 4b. In Fig. 2, (not shown), a central friction spring (5) is provided between the two contact springs so that there are two pairs of rubbing faces each with a plastics layer preferably sintered on to the friction spring.
Patent GB-712327-A (GB)
Title: Acidic cleansing agent
IPC: C11D7/08
Filed: 1951-08-20
Abstract: A cleansing powder comprises diglycollic acid and/or acid alkali metal diglycollate and a synthetic organic detergent.  The organic detergent, which constitutes preferably more than 10 per cent. of the composition may be a fatty alcohol sulphate, an alkyl or alkaryl sulphonate, an ethylene-oxide condensation product, the condensation product of a fatty acid with N-methyl taurine or a fatty acid-protein condensation product.  The diglycollic acid or acid salt should constitute at least 10 per cent. of the composition, and the pH of the composition in concentrated solution should be between 2 and 5. Other substances which may be added to the compositions include citric acid, tartaric acid, adipic acid, mono-sodium tartrate, anhydrous alkali metal phosphates such as pyropoly- or meta-phosphates, which may be acid, neutral, or weakly alkaline, for example acid sodium pyrophosphate, sodium sulphate, fillers and abrasives. Disinfectants such as cresols and phenols, e.g. 2-benzyl-4-chlorophenol may be included in the composition.  The powders can be sprayed with a solution of mineral oil, paraffin oil, wax or fatty acid in a solvent such as petroleum ether or carbon tetrachloride.  In the examples, mono-sodium diglycollate is mixed with (1) oleic alcohol sulphate, coconut oil alcohol sulphate and sodium sulphate and (2) diglycollic acid, mixed alkyl benzene and alkyl naphthalene sulphonates with from 12 to 18 carbon atoms in the alkyl chain, and sodium sulphate.
Patent GB-692270-A (GB)
Title: Improvements in or relating to apparatus adapted for heating shoe parts by use of the heating effect of a high frequency electric field
IPC: A43D8/00
Filed: 1950-08-05
Abstract: 692,270. Protecting electric instruments. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). Aug. 7, 1951 [Aug. 5, 1950], No. 19628/50. Addition to 595,140, [Group XI]. Class 37. [Also in Groups XI and XL (c)] A grid ammeter GA in an oscillator for dielectric heating is protected by connecting in parallel a capacitor 196 of relatively low impedance and a resistor 202 in the grid return lead, and resistors 198, 200 of high resistance are connected on opposite sides of the capacitor with the ammeter GA. The resistors 198, 200 may comprise resistive chokes having a resonant frequency about 10 per cent higher than the operative frequency of, the oscillator. Resistor 202 may be omitted. An anode ammeter PA and its fuse 210 are protected against L.F. surges by having in addition to the capacitor 196 and resistors 198, 200 a filter comprising a capacitor 204 and resistors 206, 208, the values of which yield a time constant longer than the duration of the surges.
Patent GB-424196-A (GB)
Title: Improvements in or relating to television and like receivers
IPC: G02F1/31
Filed: 1933-07-12
Abstract: 424,196. Electro-optical light valves. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, DOWSETT, H. M., 47, Drayton Gardens, Winchmore Hill, and LEVIN, N., 10, Kyverdale Road, Stamford Hill, all in London. July 12, 1933, No. 19748. [Class 40 (iii)] In an electro-optical light valve for television &c., the use of Nicol prisms is avoided by arranging blocks A, B, of Iceland spar or equivalent on each side of the Kerr or like cell K, the optical axes of the spar and the dimensions of the block B being so chosen that of the four images which are obtained when bi-refringent action takes place in the cell due to the television signals, the two which vary in brightness in the same sense are accurately or approximately superimposed on the aperture P2 in the member AP2, the other two images being excluded. The lenses L1, L2 are cemented to the blocks A, B.
Patent GB-825308-A (GB)
Title: A rotary drill
Inventor: ERNST HANS
IPC: B23B51/02
Filed: 1957-06-24
Abstract: 825,308. Drills. CINCANNATI MILLING MACHINE CO. June 24, 1957, No. 19857/57. Class 83 (3). In a drill having cutting-lips 21, 22, the inner ends of which are equally spaced on opposite sides of the drill axis 13, an S-shaped cutting-edge 25 connects these ends to form continuous cutting-edges from the axis to the periphery of the drill. The edge 25, having the lateral profile depicted in Fig. 7, is formed on the tip of the drill core 16, which projects ahead of the conical end of the twist-drill. In the axial transistion plane 32, 32<SP>1</SP>, between the convex leading faces 30, of negative-rake, and the concave clearance faces 31, the point-angle of the radiused edge 25 is an acute angle 33-34, Fig. 6. The negative rake-angle 33 of the edge 25 is progressively reduced from a maximum on the transition line to almost zero at the circumference of the core, or where the edge joins the cutting-lip, and the corresponding clearance angle 34 increases outwardly of the transition-line.
Patent GB-220450-A (GB)
Title: Method and apparatus for producing fibre-covered cores
IPC: H01B13/12
Filed: 1923-08-03
Abstract: 220,450. Western Electric Co., Ltd., (Western Electric Co., Inc.). Aug. 3, 1923. Moulding pulp.-Refers to Specification 204,463, and comprises a process and apparatus for covering electric conductors or other cores with pulp, wherein wet pulp is deposited upon a foraminous member and then removed therefrom and applied to the core. As shown, a drum 14 furnished with a foraminous periphery rotates in a bath B of pulp, the liquid passing through the foraminous member to an exit vessel A and depositing a ribbon of pulp C. The core passes over the drum from a pulley 11 so positioned that the pulp C is deposited upon the drum before the core contacts therewith. Further pulp D is deposited upon the core and drum. The drum is divided into compartments 49, which pass over a suction box 47, where the bulk of the moisture is removed and an air box 48 supplied with compressed air to detach the pulp layer from the drum. After leaving the drum, the pulp is applied to the core and dried by apparatus as described in Specification 204,463. The deposit of pulp may be augmented by providing an immersed suction chamber.
Patent GB-578483-A (GB)
Title: Improvements in or relating to steam or internal combustion engines
IPC: B60K5/00
Filed: 1944-11-27
Abstract: 578,483. Driving gear. BACON, L. G. Nov. 27, 1944, No. 19996/43. [Class 7 (ii)] In an engine in which an auxiliary shaft 10 is disposed parallel and adjacent to the crankshaft 12 which draws it through a gear train 23 and the auxiliary shaft carries elements 18 of a change speed gear, clutches 22, 30 are provided, one on each shaft to permit a differential 24 or other driven element to be driven from the crankshaft 12 directly or through the auxiliary shaft 10. The gear train 23 may be arranged on the crankshaft between the cylinders of the engine.
Patent GB-794269-A (GB)
Title: Improvements relating to metal fittings for loose leaf binders
Inventor: MORTIMORE CHARLES HENRY
IPC: B42F13/12
Filed: 1955-07-13
Abstract: 794,269. Loose leaf binders. HARE & SON, Ltd., C. H. July 9, 1956 [July 13, 1955], No. 20222/55. Class 146(1) A loose leaf binder comprises an angle strip 3 carrying filing posts 3a, 3b, 3c the ends of Which are closed by a strip 4 having a finger operable clutch of a sleeve like character telescopically co-operative with one of the filing posts, 3b. As shown, the clutch 5 comprises a plurality of baills 5a urged radially inward to engage the post 3b by a finger operable plunger 5b spring- urging the balls 5a along a conical sleeve 5c. A ring 5d is provided on the plunger 5b for releasing the clutch. The strip 4 preferably has a cover flange 4d and sleeves 4a, 4c (not shown) co-operable with the outer filing posts 3a, 3c.
Patent GB-684666-A (GB)
Title: Improvements in musical instruments
IPC: G10H3/20
Filed: 1949-11-15
Abstract: 684,666. Rod vibrators. SCHULMERICH ELECTRONICS, Inc. Nov. 15, 1949 [Nov. 17, 1948], No. 20278/52. Divided out of 684,610. Drawings to Specification. Classes 13 and 88 (ii). A vibrator element in a musical instrument or the like is intermittently damped by a device which is activated by the movement of the vibrator to move into and ,out of a damping relationship therewith. The embodiments described are identical with those described in Specification 684,610.
Patent GB-865955-A (GB)
Title: Improvements in or relating to feed mechanisms
IPC: H04L13/06
Filed: 1958-06-25
Abstract: 865,955. Escapement mechanisms. SIEMENS & HALSKE A.G. June 25, 1958 [June 26, 1957], No. 20401/58. Class 80 (4). A step-by-step feed mechanism, particularly for perforated tapes in telegraphy transmission, comprises a driven shaft 1 acted upon by a continuously rotating driving member 2 through a slipping clutch 4, 5 and controlled by an electromagnetically actuated. pawl 13 cooperating with a toothed disc 8 on the shaft. The electromagnet 12 is energized by short impulses to ensure single-step movements of the disc 8.
Patent GB-764195-A (GB)
Title: Improvements in apparatus for use in the electrolytic treatment of fused metallic salts
IPC: C25C3/34
Filed: 1954-07-13
Abstract: 764,195. Fused-electrolyte apparatus. HALKYN DISTRICT UNITED MINES, Ltd., and NEWALL, A. P. July 13, 1954, No. 20421/54. Class 41. An electrolytic cell for fusion electrolysis, e.g. of fused lead chloride containing lead sulphide, comprises a container for the electrolyte and a series of bipolar plate electrodes 7 disposed in the container, there being projections 12 on opposite side walls 1 of the container against which the electrodes 7 bear upwardly as an assembly under the buoying influence of the electrolyte. The cell comprises side walls 1 with a lining 3 of mineral talc. mineral steatite or fused silica, a bottom 2, and a cover 4 of steel, asbestos or firebrick. End electrodes 5, 6 pass through holes 13 in the cover 4, intermediate bipolar electrodes 7 being supported and spaced between the electrodes 5, 6 by inset cylinders 9 of fused silica. Similar cylinders 18 are inset in the electrodes 5, 6 to space them from projections 16 on opposite side walls 1, and are inset in the shouldered top corners 10 of the electrodes to engage the projections 12 on the remaining side walls 1. Molten lead is deposited on the cathode surfaces of the electrodes and, runs down to an outlet 19, or is siphoned off and the sulphur is liberated in vapour form at the anode surfaces and is led off at an outlet in the cover 4. Chlorine may be introduced at 21 to inhibit scum formation. Specifications 448,328 and 726,536 are referred to.
Patent GB-1010067-A (GB)
Title: Improvements relating to the control of fluids
IPC: A61M27/00
Filed: 1962-05-28
Abstract: 1,010,067. Regulating fluid flow. S. C. WADE. May 22, 1963 [May 28, 1962], No. 20478/62. Heading G3H. [Also in Divisions A5 and F1] A pump comprises two non-return valves 11 connected in series by a flexible conduct 10, the valves forming inlet and outlet valves and each comprising a valve disc 14 constrained to move in a cage 17 and having an annular flange 15 terminating in a knife edge 16 which is arranged to engage a valve seat 12. Each valve is housed in a steel chamber 20 and tubes 23 projecting from the chambers form connections to a capillary tube 30 and a collecting piece 26 having peripherally arranged holes 27. In use, liquid is conveyed through the valves from the collecting piece to the capillary tube by alternately compressing and releasing the conduct 10.
Patent GB-365101-A (GB)
Title: Improvements in flying craft
IPC: B64B1/00
Filed: 1930-07-07
Abstract: 365,101. Airships. LESH, J. E., North Canton, and HOHL, J. W., Newark, both in Ohio, U.S.A. July 7, 1930, No. 20505. Convention date, July 5, 1929. Void [Published under Sect. 91 of the Acts]. [Class 4.] A rigid airship is constructed with a prow 2 shaped to direct air into two longitudinal corridors 8 extending along the length of the airship level with the axis, the rear ends of the corridors merging into convex surfaces terminating in a vertical rudder post 5. The corridors are open at the outsides and contain propellers for driving air through the corridors on to stabilizing surfaces 15 and elevators 15<1> and the rudder 16. Each propeller in the corridors rotates in the opposite direction to its next adjacent propeller. The airship is built with main and auxiliary frame rings 30, 301 supporting external longitudinal members 31. The lower segments of the frame rings intersect the car framework which comprises transverse members 21, 23, 25 and longitudinal members 50, Fig. 3. The main frame rings 30 are connected by radial members 34 to ring members 35 which are interconnected by tubes 36. A cable extends from end to end of the airship within the tubes 6. Additional framework 40, 41 is provided to support the corridors 8, which are lined with sheet metal, and radiating posts 42 support the engines and propellers. Gas cells are threaded over the tubes 36 between the main frame rings, the gas cell proper being surrounded by a fabric covering 37 which separates it from a steel network 38 which presses against the longitudinal members 31. Ballonets 29 in the lower parts of the gas cells are inflated from a fluid supply to keep the gas cells taut. Longitudinal trim may be preserved by pumping liquid between two tanks situated fore and aft of the airship. Airscrew-driven generators 19 are provided beneath the car for lighting the airship &c.
Patent GB-205492-A (GB)
Abstract: 205,492. Petrella, A. Oct. 12, 1922, [Convention date]. Transformers.-The transformer and other electrical members of an ignition set for use on motor-cars, in which the primary current is supplied from the battery 1 or dynamo-electric machine 2 of the lighting and starting plant, are mounted in a casing 10 provided with external contact studs adapted to engage corresponding contact studs on a support in which the casing is mounted by the use of hooking means, in such a manner that it is readily removable for repairs or renewal. As shown, the casing 10 containing the high-voltage transformer, comprising the primary winding 3 and secondary winding 8, and the condenser 7, is provided with ribs 18 which engage guide members in the frame or support 17. The windings and condenser are connected to contacts 11 - - 13 which project through the casing and engage spring contacts connected to the external leads 14 - - 16 when the casing is placed in position in the frame.
Patent GB-243651-A (GB)
Title: Improvements in garment presses
IPC: D06F71/34
Filed: 1924-09-06
Abstract: 243,651. British-American Laundry Machinery Co., Ltd., (American Laundry Machinery Co.). Sept. 6, 1924. Ironing-machines with pressing action only.- Tha degree of heat in the head of a garment press is controllable by movement of that member. Heating elements 108 - - 110 are embedded in the press head, four of which, namely 108 correspond to a low heating which is increased by switching in two additional elements 109 and reachs a maximum on switching in two further elements 110. The elements 108 are in circuit whether the press is open or closed, but whether either or both of the pairs of additional elements shall be switched into circuit on closing the press is determined by the operator 'by switches 122, 123. Two complete conductor rings 112, 113 corresponding to the elements 108 are mounted on an insulating bush surrounding the shaft about which the press head rocks. The bush carries also segmental conductors 114, 115 corresponding to the additional elements, the operator-controlled switches 122, 123 being arranged in circuit with these segments. Specification 243,465 is referred to.