baber/WOPTO huggingface dataset:
Patent GB-470193-A (GB)
Title: Improvements in and relating to the extinguishing of fire in oil tanks
IPC: A62C3/06
Filed: 1936-03-04
Abstract: 470,193. Fire-extinguishing. PYRENE CO., Ltd., and BEDFORD, H. E. March 4, 1936, No. 6603. [Class 47 (ii)] In making foam for extinguishing fires in oil tanks which normally have a layer of water below the oil, the water is used as one ingredient of the foam. As shown, foam-generating powder is forced, by compressed gas, from a container 13 into the layer of water 2. For this purpose, a pipe 9 secured in the wall of the tank and provided with a check valve 10 and control valve 11, is adapted for ready connection to the container 13. In a modification, a foam nozzle of the injector type is built into the tank at the level of the water layer, and is connected to a source of compressed gas and foaming agent ; or foaming agent may be added to the water layer, and compressed gas forced in through a distributing device. In another modification, water is withdrawn from the layer by a pump and passed through a foam generator, the resultant foam being discharged on to the surface of the oil.
Patent GB-1206464-A (GB)
Title: Improvements in rotary positive-displacement pumps and motors
Inventor: THOMSON JOHN
IPC: F04C15/00
Filed: 1967-02-10
Abstract: 1,206,464. Rotary positive-displacement pumps and motors. J. THOMSON. May 9, 1968 [Feb.10, 1967], No.6621/67. Heading F1F. A rotary positive-displacement pump, or motor, includes an annular chamber 16, Figs.1 and 2, defined by a rotor 12 and a stator 14 attached to a housing 52, the rotor being furnished with two pairs of radial vanes 26 with notches, or cut-outs, 27 therein to allow passage of a fixed abutment 18, which is provided with inlet and outlet ports 20, 22 for the working fluid. To effect radial reciprocation of the vanes in synchronizm with the rotary motion of the rotor, the vanes that are diametrically opposed to each other are coupled together by a member 25, which engages with a respective cam 38 attached to a rotatable shaft 40, that latter being eccentric relative to the rotor and a driving shaft 56 therefor. The abutment is fixed to the stator so that during operation of the pump or motor it virtually travels in a circumferential direction through the chamber 16 and co-operates with the vanes to effect a pumping action or rotation of the rotor. To relieve pressure in the notch 27 of the vane adjacent the abutment, a slot (51), Fig. 3 (not shown), may be formed at either end of the abutment. In a modification, Fig.7 (not shown), the notch in each of the vanes is situated radially beyond the annular chamber whenever the respective vane is diametrically opposite the abutment. In another modification, Fig. 9, the notches aforesaid are omitted, the vanes being such that they lie wholly within the portion of the rotor that is radially inward of the chamber 16 when they are adjacent the abutment. Mutually adjacent slots 108 into which the vanes project when they are remote from the abutment are connected to each other by ducts 50 to prevent fluid being trapped therein. Axial balancing of pressures in the chamber 16 is effected by arcuate recesses (60), Fig. 8 (not shown), in the rotor adjacent the housing 52 being connected to said chamber by axial conduits (62) in the rotor. Leakage fluid in a cavity 72 escapes through an outlet 72 to which a further cavity (74) in the housing circumjacent the shaft 56 and a chamber 24, Fig.2, are also connected to effect removal of leakage fluid therefrom. The recesses (60) and the arrangements for escape of leakage fluid may be included in the pump or motor according to Figs.1 and 2.
Patent GB-1002957-A (GB)
Title: Improvements in or relating to electrolytic machining
IPC: B23H3/04
Filed: 1962-02-20
Abstract: <PICT:1002957/C6-C7/1> <PICT:1002957/C6-C7/2> <PICT:1002957/C6-C7/3> <PICT:1002957/C6-C7/4> An electrode having tapering sides is used to machine a tapered cavity in a workpiece. The electrode may have electrolyte supply passages therethrough to its end portion, Figs. 3 and 9, or may be solid, Fig. 13.  The electrode's side walls are smooth, electrically conductive contain no aperture for the supply or escape of electrolyte and converge to the electrode's end portion. Electrolyte is passed between the electrode and workpiece under a pressure of 100 lb./sq. inch or more whilst keeping the distance between the electrode and workpiece at or lower than 0.015 inch, e.g. using an electrode advance rate of 0.1-1 inch/ minute.  Fig. 3 shows a copper electrode 21 where electrolyte is fed from a recess 23 through passages 27 and transverse slot 29. In the electrode of Fig. 9 the slot has been omitted.  Fig. 13 shows a solid copper electrode 43 with electrolyte supply to its end portion through passages 39 and 35 in a clamp 37 and the workpiece WK respectively.  Prior to forming the tapered cavity, a parallel sided cavity may be formed by a copper electrode having a flange plat 31, Fig. 7, and insulated sides 33. An electrolyte of KCl, KNO3, Rochell salts and potassium citrate may be used. Alternatively 10% NaCl or an electrolyte as described in Specification 943,101 may be used. By the method, a hollow bolt having a hexagonal socket in its head may be made or gaps between turbine blades may be machined. Specifications 944,613 and 1,002,956 also are referred to.
Patent GB-417650-A (GB)
Title: Improvements in or relating to coin-freed apparatus
IPC: G07D5/02
Filed: 1933-03-04
Abstract: 417,650. Automatic exchange systems. AUTOMATIC ELECTRIC CO., Ltd., Strowger Works, Liverpool.-(Associated Telephone & Telegraph Co. ; 1033, West Van Buren Street, Chicago, U.S.A.) March 4, 1933, No. 6664. [Class 40 (iv).] In a telephone paystation, a gong 46 and bell 47, for signalling the denominations of inserted coins to the operator, are sounded by hinged striker bars 44, 45 selectively operated by coin-freed mechanism (not shown) according to the denomination of a coin inserted.
Patent GB-1287584-A (GB)
Title: Diffusion cell
Inventor: DARLING ALAN SYDNEY
IPC: C01B3/50
Filed: 1969-02-07
Abstract: 1287584 Separating hydrogen by diffusion JOHNSON MATTHEY & CO Ltd 5 Feb 1970 [7 Feb 1969] 6724/69 Heading B1L A diffusion cell which is especially suitable for separating pure hydrogen from mixtures comprises a plurality of non-porous diffusion members 6, each side of each member being in surface contact with a spacer 12, such spacers interleaving the diffusion members 6. Members 6 have central square holes (24) (see Fig. 2, not shown) which just pass over a central spindle (3), and consist of an internal support, such as a gauge, a grooved plate or a sintered material, which carries the diffusion membrane surfaces of Pd or Pd/Ag alloy. Spindle (3) supports cylindrical spacers 5 between diffusion members 6, which spacers carry a flow guide element 12 by means of square holes (27) (see Fig. 3, not shown) which just fit over spacers 5 leaving corner channels 29 therebetween. Impure gas is constrained to pass over each surface of members 6 by spacers 12, passing at the innermost edges of spacers 12 through gaps 29. Pure hydrogen which diffuses into members 6 passes at the innermost edges thereof into space 25 (see Fig. 2, not shown) and thence to outlet 15. The mixture inlet for the input stream is preferably 18 and the outlet 16, but these connections may be interchanged if desired. The cell may include an internal heater, and the most suitable operating conditions are 300‹C and 300 p.s.i.
Patent GB-166211-A (GB)
Title: Process of and apparatus for ozonizing substances
IPC: B01J19/00
Filed: 1919-03-18
Abstract: 166,211. Pattison, E. W., (General Research Laboratories). March 18, 1919. Vapours, producing by chemical action. - Pinene ozonide is produced by introducing pinene into ozonized air under pressure, spraying the mixture produced one or more times, and then allowing the mixture to expand successively and by degrees until atmospheric pressure is reached. Air under pressure is passed from the ozone generator 11 to a pipe 4, into which pinene is discharged by means of a feeding device 3. The mixture passes through a sprayer 15<1> into a series of mixing chambers 16<1>, 18, 38<1>; thence to another mixing chamber 25 provided with a nozzle 26 and deflector 27 at the entrance; and finally through an injector arrangement 32 to a distributing chamber 30<1>, whence the ozonide issues to the atmosphere. Additional ozonized air may be introduced through the pipes 38, 39. Valves 12a, 15, 20, 23, 30 and gauges 12b, 16, 24, 31 are provided for regulating the pressures throughout the system to permit of expansion of the mixture by consecutive stages. Other forms of feeding device may be used.
Patent GB-424731-A (GB)
Title: Improvements in and relating to processes for purifying and removing the poison and smell from the exhaust gases of internal combustion engines and apparatus therefor
IPC: F01N3/28
Filed: 1934-03-02
Abstract: 424,731. Purifying and silencing exhaust. BLUM, R., Waldorf Astoria, Park Avenue, New York, U.S.A. March 2, 1934, No. 6752. Convention date, Feb. 3. [Class 7 (ii)] In means for purifying exhaust gases and removing the poison and smell by supplying air thereto by an injector, and passing them through a catalyst chamber within which the pressure cone of the injector is located, the suction passages of the injector for the entry of air open directly to the atmosphere outside the parts which become heated. The metals employed as catalysts may be platinum, gold, osmium, rhodium, silver, vanadium, molybdenum, titanium, &c., or a mixture of platinum and rhodium, and they are applied in a state of fine subdivision to refractory carriers made of chamotte, steatite, &c. Prevention of carbon deposit may be secured by making those parts of the apparatus which are not provided with catalytic material of chromium, nickelchromium, or aluminium-chromium steel, or of chromium-plated iron. Fuel odours which are not destroyed by the noble metals may be eliminated by the use of silver iodide, palladium, or titanium oxide. The apparatus used also acts as an exhaust-silencer. Fig. 6 shows one form of apparatus, in which the exhaust gases are directed through a nozzle 3 into an injector tube 4, provided with openings 17 through which air is drawn in, the mixture of exhaust and air impinging on a plate 8 impregnated with catalyst, and then passing upwards around the tube 4 against a second plate 19, and downwards again past baffle plates 10 also impregnated with catalyst, escaping at 15. In a modification, the gases pass from the bottom of the tube 4 upwards through the baffles 10 and escape at the top. In other forms, the exhaust flow may be divided into several streams, which are then led into a corresponding number of injectors arranged down the centre of the baffle plates. Also a mixing-nozzle may be arranged between the nozzle 3 and the tube 4. Slide valves or other means may be used for cutting out one or more of the injectors.
Patent GB-774513-A (GB)
Title: Improvements in or relating to electric circuit breakers
IPC: H01H73/24
Filed: 1953-03-12
Abstract: 774,513. Automatic circuit-breakers; switches held set and freed mechanically. CUTLER-HAMMER; Inc. March 12, 1953 [March 12, 1952], No. 6836/53. Class 38(5) [Also in Group XIII] A circuit-breaker comprises an overloadsensitive element 12 formed by folding at 18 a ribbon of metal (e.g. stainless steel) to produce spaced opposed walls 14, 16. Inwardly biassed disc-shaped areas 20, in the walls have their peripheries 22 welded to one another to define a capsule into which a predetermined quantity of vaporizable material (e.g. water) has been introduced. The fold 18 is welded at 42 in a movable contact-carrier 38, the fixed end of the element being welded at 32 in a terminal'28. Pleats 36 render the element flexible in the plane of the capsul whilst spaces 26 between the walls 14, 16 cause the heat produced by current passing through the element to be concentrated at the capsule. Projections 52 formed at the capsule centre make pivotal snap-in engagement with sockets 58 formed in opposed legs 54, 56 of a kick-out member which straddles. the element 12; The legs are inherently biased towards each other and may be strengthened by lateral flanges. The lower end of the leg 54 is formed with a serpentine-like spring 60 and with a projection 62 constituting a keeper normally engaged by a latch 66, whereby a contact 44 carried by the element 12 engages a fixed contact 46. against the bias of the spring 60, the latter having a clearance slot 65 receiving the leg 56 (Figs. 1, 2). At a predetermined current the capsule walls snap outwards to spread the legs 54, 56 and the keeper 62 moves to the left to disengage the latch 66 and the contacts 44, 46 separate (Fig. 4, not shown). The breaker is resert on contraction of the capsule by a lever 74 and C-spring 70, the upper end of the latter being inturned to engage a hole 73 in the  lever whilst the lower inturned end passes through a slot 64 in the leg 56 and comprises the latch 66. The spring 70 is guided in a depression 76 in the breaker cover 10 so that when the lever 74 is moved to the "reset" position the spring is moved overcentre and raised whereby its intermediate portion engages a cam surface 78 of the depression 76 and the latch, portion 66 is forced into reset notch 80, Fig. 6. On release of the lever it returns to the "off" position. On subsequent movement of the lever to the "on" position, the spring 70 iscompressed and coacts with cam surface 78 whereby the latch 66 disengages the notch 80 and snaps against the keeper 62 to close the contacts. The breaker may be manually opened by moving the lever 74 to the "off" position whereby the spring 70 is moved over-centre and its compression sufficiently relaxed to permit the spring 60 to raise the latch 66 into the notch 80 and to open the contacts. On automatic opening of the breaker the top of the kickout member engages a flat surface 88 on the lever 74 to move it to a "trip" position to give visual indication that the breaker is open. Specification 656,721 is referred to
Patent GB-723958-A (GB)
Title: Electrolytic cell
IPC: C25B9/14
Filed: 1953-03-12
Abstract: 723,958. Mercury-electrode cells. FARBENFABRIKEN BAYER AKT.-GES. March 12, 1953 [March 15, 1952], No. 6844/53. Class 41. An electrolytic cell of iron having a mercury electrode on its floor and an insulating lining on its inner sides, is so constructed that an extension of the horizontal upper surface of the mercury meets the insulating lining at an angle substantially larger than 90 degrees. A cell 1 having a lining 2 of rubber or plastic attached to the cell bottom by means of a screw 3 and insert 4, may have a shoulder at substantially the height of the surface of the mercury 5 as in Fig. 2, so that the angle of contact approaches 180 degrees; or the lining 2 may dip below the mercury 5 in a gentle slope as in Fig. 3.
Patent GB-535550-A (GB)
Title: Improvements in or relating to dust collectors or separators and the like
IPC: B04C7/00
Filed: 1940-04-16
Abstract: 535,550. Centrifugal dust separators. DAVIDSON & CO., Ltd., and CALDWELL, A. S. April 16, 1940, No. 6852. [Class 23] In a vortex dust separator arrangement of the kind described in Specification 223,786, [Class 23], an auxiliary fan 11 is mounted inside the primary separator casing 1 to assist the main suction fan to exhaust air from the secondary separator 2. The main fan 5 is placed at the pure air outlet 4 of the primary separator, the dust pocket 10 of which is connected by a duct 9 to the secondary separator 2. The duct 8 leads air from the secondary separator back to the primary, and the inlet of the auxiliary fan 11 at the small end of a truncated conical portion 12 to enable the duct 8 to be arranged concentrically or eccentrically with regard to the primary separator. Vanes 15 may be arranged at the clean air outlet 4.
Patent GB-715092-A (GB)
Title: Improvements in milling cutters or hobs
IPC: B23F21/16
Filed: 1952-03-17
Abstract: 715,092. Milling-cutters. KRUSE, H., and FETTE, C., [trading as FETTE, W., [Firm of ].]. March 17, 1952 [June 30, 1951], No. 6901/52. Class 83 (3). A milling-cutter comprises inserted blades 1 having part - circular profiles 2a which permit rotation in corresponding recesses in the body 2, the blades having arcuate shoulders 1<SP>11</SP> which are engaged by end-caps 3a to position the blades with clearance for cutting. Further shoulders 1<SP>1</SP> on the blades may be engaged by end-caps 3b to position them with the outer surfaces concentric for grinding.
Patent GB-575851-A (GB)
Title: Improvements in adjustable hearth stands
IPC: F24B1/191
Filed: 1944-04-15
Abstract: 575,851. Hearth stands- KIRBY, Ltd., J. I., and KIRBY, J. I. April 15, 1944, No. 7002. [Class 126] [Also in Group XIV] In a hearth stand comprising a table 1 supported for vertical adjustment upon a pair of independent base members 5, 5a, 5b, angular displacement of the feet 5b is prevented by forming the legs 3 depending from the table and the sockets 4 in the members 5 of non-circular section, e.g., square. The table 1 1s formed with a series of slots to receive the edges of plates to be warmed and clamping screws are provided to secure the table at the desired height. The legs 3 are secured to the table so that they cannot turn relatively thereto, this being effected, in the form shown in Fig. 6, by threading the corners 3a of the upper end of each rod 3 for engagement in an internally-screwed boss 8 integral with the table, the top end of the rod having a central recess 7 which permits the insertion of a punch to expand the metal into the corners of a square hole-- 9 provided on the upper face of the boss 8. Fig. 10 shows a modification in which the upper end of the leg 3 is formed with a reduced portion 10 of circular section which engages in a plain hole 11 in the boss 8, the latter being formed with a square recess 12 to receive the top 3b of the square part of the leg and with a square hole 9 into which the recessed upper end of the reduced portion 10 is expanded.
Patent GB-1111893-A (GB)
Title: Word game
Inventor: WHITE JOSEPH EDWARD
IPC: A63F3/04
Filed: 1966-02-17
Abstract: 1,111,893. Educational appliances. J. E. WHITE. 17 Feb., 1966 [25 Feb., 1965], No. 7037/66. Heading G5G. A word game comprises a box-like container consisting of a cover 9 with three side walls 10, 11, 12 and the other side 13 of the cover being left open to give easy access to a stack of backing sheets 14 on each side of which are printed four arrays 21 to 24 of Nos. 1 to 5 which are visible through some of the 26 alphabetically notated windows 20 when opened provided in the front wall 19 when the backing sheet is inserted in each of its eight positions thus indicating the numerical position in the word to be guessed of the respective letter of a window opened. A further window labelled " par " reveals a number of guesses reckoned par for the word in question and a further window labelled " definition " reveals a clue to the word to be guessed.
Patent GB-1373351-A (GB)
Title: Catalyst tablets
IPC: C01B17/79
Filed: 1972-02-16
Abstract: 1373351 Sulphur trioxide; bioxidation of sulphur dioxide MONSANTO Ltd 16 Feb 1972 [17 March 1971] 7110/71 Heading C1A [Also in Division B1] Sulphur trioxide is produced by the vapour phase oxidation of sulphur dioxide with oxygen over one or more beds of catalyst tablets, the tablets containing vanadium pentoxide and having two circular faces, at least one of which carries one or more protuberances or recesses, the tablets being symmetrical about an axis passing through the centres of the circular faces.
Patent GB-742886-A (GB)
Title: Improvements in and relating to magnetic amplifiers
Inventor: PETTIT RICHARD DAN
IPC: H03F9/04
Filed: 1953-03-16
Abstract: 742,886. Magnetic amplifiers. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 23, 1954 [March 16, 1953], No. 7188/53. Class 40 (4). In a self-excited magnetic amplifier carrying load current windings 1, 2 on respective saturable cores and having rectifiers 3, 4 connected in series with the windings,. a transient feed-back voltage is applied at terminals 7, 8 to the windings 1, 2 through a capacitor 10 and preferably a resistor 9 in series so that the resulting transient deviation in output current is extended in the manner indicated in Fig. 2. A modification for feeding direct current to the load is described with reference, to Fig. 3 (not shown).
Patent GB-525988-A (GB)
Title: Improvements relating to observation mirrors for road vehicles
IPC: B60R1/06
Filed: 1939-03-04
Abstract: 525,988. Observation mirrors for road vehicles. LUCAS, Ltd., J., and SIMCO, H. V. March 4, 1939, No. 7189. [Class 103 (ii)] To render the mirror waterproof an annular rubber or like sealing ring m embraces the periphery of the reflector a and bears tightly against the adjacent front, rear, and peripheral surfaces of a case. A plate g is soldered over the inner side of the usual hollow boss f forming part of the swivel connection whereby the mirror is secured on a vehicle.
Patent GB-664061-A (GB)
Title: Production of titanium metal
IPC: C22B34/12
Filed: 1949-03-16
Abstract: Titanium dioxide is reduced to a lower oxide by means of magnesium and the lower oxide reduced to the metal by means of calcium, both reduction steps taking place in an inert atmosphere, e.g. argon or helium.  The steps may take place at temperatures of 550-565 DEG C and 700-1000 DEG C respectively.  After the first stage, magnesium and magesium oxide may be removed by treatment with a 5-10 per cent solution of hydrochloric acid; the final product may be treated similarly.  Alternatively, acetic acid or ammonium chloride solution may be used.
Patent GB-719808-A (GB)
Title: Improvements in or relating to sound recording apparatus
Inventor: O'BRIEN WILLIAM JOSEPH
IPC: G11B33/02
Filed: 1952-03-20
Abstract: 719,808. Toothed gearing. DECCA RECORD CO., Ltd. March 17, 1953 [March 20, 1952], No. 7246/52. Class 80 (1) [Also in Group XXXVIII] A turntable 10 of a sound recording apparatus is driven by moving one of, e.g. as shown, three pinions 19 into engagement with one of two gear wheels 13, 14 secured to the turntable. The number of teeth on the pinions and the gear wheels may be arranged so that the turntable may be driven at 78, 45 or 33<SP>1</SP>/ 3  r.p.m. Each pinion is driven by a separate motor 15 through a flexible coupling comprising a helical spring 20 and a rubber block 21. The motors may be mounted in gimbals carried by rubber blocks. Each pinion is forced into engagement with the gear wheels by pressing a button 31 which moves a slide 24 fixed to a ball race 22 carrying the spindle 18 of the.flexible coupling. After pressing a button, it is held in position by a member 35 which engages a recess 34. When another button is pressed, a cam surface 37 releases the member 35 from the button already pressed. The pinions are normally held away from the gear wheels by springs 26. The gear wheels may be made of compressed fibrous material.