baber/WOPTO huggingface dataset:
Patent GB-784253-A (GB)
Title: Improvements in or relating to the cold separation of air
Inventor: SCHUFTAN PAUL MAURICE
IPC: F25J3/04
Filed: 1955-05-12
Abstract: 784,253. Cold separation of air. BRITISH OXYGEN CO., Ltd. May 2, 1956 [May 12, 1955], No. 13734/55. Class 8(2). In a compressed air rectification process for the production of liquid oxygen wherein compressed air or a separation product is used to maintain a temperature gradient in the column 1, Fig. 1, e.g., liquid air after expansion at a valve 5 being fed through a duct 6 to the head of the column as reflux, part of said product or compressed air is diverted prior to entry into the column through a duct 9 and is expanded isentropically in a turbine 10 thereby producing the extra cold necessary for the production of liquid oxygen. The cold expanded air may be fed to the column 1 at a point near the normal low pressure cold air intake 2 or it may pass through a duct 11 to join the product nitrogen gas serving to cool the incoming air. In using a conventional double column 1, 13, Fig. 2, the temperature gradient in the low pressure column 1 is maintained by admitting through ducts 6, 15 expanded nitrogen and oxygen from the column 13 and extra cold is generated by diverting either part of the high pressure air stream from duct 3 through the turbine 10 or nitrogen from the head of column 13 therethrough, and thereafter adding the expanded stream to the nitrogen effluent duct 7. The expanded air stream in duct 11 may be fed to the column 1 near the low pressure air inlet 2. Gaseous product oxygen is discharged through a duct 8 and liquid oxygen through a duct 12.
Patent GB-505319-A (GB)
Title: Improvements in and relating to locks
IPC: E05B27/00
Filed: 1938-05-09
Abstract: 505,319. Revolving - barrel locks. TRIGGS, W. W. (Yale & Towne Manufacturing Co.) _May 9, 1938, No. 13748. [Class 44] In a revolving-barrel lock having a contro: part with respect tc which the plug rotates when operated by the correct key, the control part being mounted in the lock body for limited rotation with the plug on the application of picking torque, such rotation of the control part operates means to lock the plug to the control part. The looking means comprises a spring-pressed pin 14, Fig. 5, having a domed head 17 engaging a recess in the lock body 10 to hold the control part 12 in its normal position. The correct key 22 brings the divisions between the tumblers 19 and drivers 20 to the surface of the plug 11 and enables the plug to be turned to operate the lock. If, in an attempt to pick the lock, torque is applied' to the plug, the drivers 20 rotate the part 12. The pin 14 is thereby cammed into engagement with a recess 21, Fig. 6, in the plug 11 to lock the plug to the part 12, thus preventing further rotation of the plug even if the drivers are subsequently picked. The recess 21 is out of line with the tumbler, bores to prevent accidental engagement of a driver in the recess during normal rotation of the plug. The recess may be of smaller diameter than the drivers in which case it is permissible for it to be in line with one of them. In a modificatioh, Fig. 9, a pin 14a is mounted in the portion of the control part 12 housing the drivers, the domed head of the pin normally engaging a waist 26 in a pin 25 extending between opposed faces of the lock body 10. In a modification applied to a lock having sliding plate tumblers, the control part is a complete sleeve interposed between the lock body and the plug. Rotation of the control part relative to the lock body is limited to the amount necessary to cause a pin, similar to the pin 14, to lock the plug to the control part.
Patent GB-1530513-A (GB)
Title: Safety box toe
IPC: A43B23/08
Filed: 1976-04-06
Abstract: 1530513 Safety toe cap BRITISH BATA SHOE CO Ltd 6 April 1976 [8 April 1975] 13845/76 Heading A3B A protective insert 30, e.g. for a safety shoe, providing improved resistance to deformation and displacement has an open rear end 34, a closed front end 32 and a crosssection, in the general shape of an inverted U, inwardly-directed flanges 40 being provided on the lower edges 38 such that their horizontally-projected area 58, 60 behind a pre-determined vertical transverse reference plane 44 is equal to or greater than that 58 in front of the plane and such that their maximum width 48, 50 transversely of the insert 30 is individually no more than 20% of the overall width of the insert 30, said overall width being defined by the lower edges 38 at the rear edge 36. The intersection of the longitudinal axis 42 and the rear edge 36 defines the highest point of the insert 30; the reference plane 44 passes through a point ¢" in front of the highest point for U.S. size 9D (proportionately for other sizes). The flanges 40, which may be continuous and may increase in width from front to rear or saw-toothed, serrated or have tabs, and may be horizontal, e.g. in the case of welted or flat lasted cemented footwear, or inclined at no more than 45 to the horizontal, e.g. for vulcanized footwear. The insert may be of metal, e.g. steel, plastics or fabrics; its rear edge 36 slopes forwardly and upwardly for comfort in use.
Patent GB-671479-A (GB)
Title: Improvements in or relating to pulse-jet engines
IPC: F02K7/06
Filed: 1949-05-25
Abstract: 671,479. Jet-propulsion plant. TUSTANOWSKI, J. May 12, 1950 [May 25, 1949], No. 13935/49. Class 110(iii) [Also in Groups XI, XII and XXIX] A pulse-jet engine comprises a combustion chamber 13 having an inlet constituted by a grid 11, the segmental apertures of which are controlled by a rotatable shutter valve 12 which is operated in timed relationship with the pulsations in the combustion chamber to permit a periodic supply of air thereto. The spindle 112 of the valve 12 is helically splined to the grid and carries a spring 17 which urges the valve into an intermediate axial position. Fuel is supplied through the hub of a fan 20 which is driven by the fuel to mix it with the air supplied. The spring 17 may constitute an axial compression spring. In a modification. Fig. 3, a frusto-conical valve 212 is used which also controls additional air inlet ports 24 which are fed from a scoop 124 or a duct in a blade 26. The fuel injector has a stem 28 which is mounted in the spindle 112 and is accommodated in the nose of the grid 211. A resilient cover 31 is fixed to an extension of the stem 28 and is urged against a rim 32 on the base 29 of the stem with a pressure proportional to the temperature in the combustion chamber. The injector is controlled by a needle valve 34 which is connected to the valve 212 by a bracket 35. The fuel is fed through a pipe 33 which may be located inside the combustion chamber and on lifting the cover 31 issues in the form of a conical jet. The needle valve may be replaced by a diaphragm and the injector may move with the valve 212 in which case the needle valve is fixed to the nose of the grid.
Patent GB-740837-A (GB)
Title: Improvements in the production of manganese solutions and the electrowinning of metallic manganese therefrom
IPC: C01G45/00
Filed: 1953-05-19
Abstract: <PICT:0740837/III/1> Manganese sulphate or chloride solutions free from iron and other heavy metal impurities are obtained by leaching a manganese-bearing furnace slag which contains bivalent manganese and metal sulphides capable of yielding sulphide iron under the reaction condition, with sulphuric or hydrochloric acid to form a slurry and thereafter adjusting the pH to between 4.0 and 7.5 by the addition of a base such as ammonia or lime in the presence of sufficient sulphide ions present in the slag or supplemented by additions such as hydrogen sulphide or ammonium sulphide to precipitate the heavy metals as sulphides, adding an oxidizing agent to precipitate residual iron and removing the precipitates from the thus purified solution.  If less than 0.01 per cent heavy metal impurities are present the oxidizing agent is added to the treated leach liquor containing precipitated sulphides.  A two stage precipitation is shown in Fig. 1, employing ammonia as base with the resultant production of a manganese and ammonium sulphate solution.  Hydrogen peroxide is employed as oxidizing agent in the second precipitating stage.  Of the chloride and sulphate solution production is associated with an electrolytic manganese production, the acid may be in part constituted by recycled anolyte, according to a typical example, a ferromanganese slag containing silica, magnesia, titania, alumina, sulphur, carbon, iron, copper, nickel and cobalt was leached with sulphuric acid and the pH of the resultant pulp was adjusted to 6.65 by ammonia gas.  The sulphide precipitate was separated and the filtrate oxidized with hydrogen peroxide thereby precipitating residual iron to leave a high purity manganese and ammonium sulphate solution.
Patent GB-150433-A (GB)
Title: Improvements in and relating to reinforced-concrete floors, roofs and the like
IPC: E04B5/04
Filed: 1919-06-02
Abstract: 150,433. Jardine, J. M. June 2, 1919. Joist floors; reinforced-concrete beams.-In a reinforced-concrete floor, roof, &c. of the kind in which a series of reinforced concrete slabs, which may be arched, bear on main concrete beams, the latter are T-shaped and are provided with bevelled sides 3 and projections 4 to support the arched slabs, which are correspondingly bevelled. The lower end of the stem of the T is also provided with projections 12 to support ceiling slabs 8 in known manner. The sides of the slabs are shaped as shown in Fig. 3 so as to form a groove 9 in which the reinforcements of the slabs are jointed, as shown, and also to accommodate reinforcements 11 which span the beams. The upper surface of the floor may be finished in granolithic, marble &c.
Patent GB-805731-A (GB)
Title: Improvements in the separation of crystalline mixtures
Inventor: SWAINE JACK
IPC: C01G3/10
Filed: 1954-05-13
Abstract: The constituents of a mixture of solid copper sulphate with a minor proportion of nickel sulphate are separated by contacting the mixture with a solution saturated with respect of both constituents and then raising the temperature of the whole of a point where the difference in solubilities is such that nickel sulphate is preferentially dissolved, and thereafter separating the undissolved copper sulphate from the heated solution.  The latter may then be cooled to crystallize the nickel sulphate and recycled to extract, under the same conditions, the nickel sulphate from a fresh sample or from the undissolved copper sulphate.  The initial temperature of the solution may be from 15 DEG  to 30 DEG  C. and the heating may be to 30 DEG to 50 DEG  C.  The nickel sulphate solution may be subjected to electrolysis to recover nickel.
Patent GB-311378-A (GB)
Title: Device for the protection of pneumatic tyres against puncturing bodies
IPC: B60S1/68
Filed: 1929-05-06
Abstract: 311,378. Simoes de Macedo, J. A. May 10, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Wheel scrapers.-Any object sticking into and projecting from a pneumatic tyre engages a blade which fits the tyre closely and the impact closes an electric circuit operating an electric warning device. The warning is repeated at each revolution of the wheel until the object is dislodged. The blade d shaped to fit the tyre is secured to a spring plate b carried by and insulated from the supporting arm a. The spring plate b carries two contacts g on each side. When a puncturing object strikes the blade d, one of the contacts g momentarily closes the circuit and the warning device is operated.
Patent GB-687455-A (GB)
Title: Process and apparatus for de-aerated viscous liquids
IPC: B01D19/00
Filed: 1951-06-14
Abstract: <PICT:0687455/III/1> Viscous liquids are de-aerated by directing a rotating jet of the liquid on to the wall of a rotating bell-shaped member 12 having a radial section comprising a parobola or hyperbola merging into a circle, and a straight part 14.  The member is mounted on a rotary shaft 1 which carries a second bell-shaped member 13.  A flange 17 on the second member coacts with a stationary sump 24 to form an enclosed space.  Liquid supplied through a bore 3 in the shaft emerges as jets from holes 4.  The liquid flows down the inner wall of the member 12 to collect in the vicinity of the straight part as a ring of partially de-aerated liquid having air bubbles floating on the inner surface.  The partially deaerated liquid passes through perforations in the part 14 for further treatment on the wall of the member 13.  The completely de-aerated liquid flows between the wall of the member 13 and a hollow body 23 on the shaft to the sump. Suction is applied to the enclosed space by a tube 11 to remove the air liberated from the liquid and to assist in the destruction of air bubbles.  In a modification an impeller on the shaft forces heated air through the enclosed space to remove the air liberated from the liquid, and the de-aerated liquid is collected in an annular chamber surrounding the second member.
Patent GB-579560-A (GB)
Title: Improvements in or connected with bomb carriers for aircraft
IPC: B64D1/06
Filed: 1935-11-21
Abstract: 579,560. Bomb dropping apparatus. BOULTON PAUL AIRCRAFT, Ltd., and NORTH, J. D. Nov. 21, 1935, No. 14178/36. Divided out of 579,310. [Class 9 (ii)] [Also in Group XXXIV] Relates to bomb magazines for aircraft, of the type comprising means for releasably securing in the magazine a number of bomb units (single bombs or groups), with means for rotating the magazine to bring the units in sequence into a discharge position, and for releasing a bomb unit only when it is in position for discharge. According to the invention, there are provided means for retarding the rotation of the magazine and thus absorbing the kinetic energy of the assemblage as each bomb unit approaches the discharge position, and means for positively arresting the retarded magazine as each bomb unit is in position for release. The invention is described as applied to a magazine having special features described in Specification 579,310. The central spindle 20 of the magazine may, as shown in Fig. 4, carry a cam disc 79 having a number of lobes, each of which corresponds to one of the bomb units, a spring-loaded cam follower 81 being carried by the piston-rod of a dashpot 89, A notched disc 78, with which a locking-member 84 coacts, is also mounted on the spindle 20. there being one notch for each bomb unit. After release of the first bomb, an initial impulse may be imparted to the magazine by a spring- pressed arm acting upon a cam (not shown) on the spindle 20. At the same time, the locking- roller 84 is withdrawn, by suitable mechanical or electrical means, from the notch with which it is engaged, and the magazine is rotated, either by a motor, or merely by the effect of the out-of-balance loading of the bombs remaining in the magazine. The dashpot 89 checks the rotation as the next bomb approaches the discharge position, and when this is reached the roller 84 snaps into the next notch in the disc 78, re-locking it. These operations are repeated at each step-by-step movement of the magazine, except that no further starting impulse is necessary in the arrangement where no motor is employed. Fig. 7 shows a modification in which the locking and braking of the magazine spindle 20 is effected by means of a fourarmed member 90 co-operating with a lever 95 connected to a spring-loaded plunger 101. The lever 95 is normally held in the locking position by an electrically or mechanically controlled release-hook 98.
Patent GB-189723-A (GB)
Title: An improved plant for the synthetic manufacture of hydrochloric acid in aqueous solution
IPC: C01B7/01
Filed: 1922-05-19
Abstract: 189,723. Poma, G., and Andreani, G. May 19, 1922. Gas-producing furnaces.-Plant for the synthetic production of hydrochloric acid by means of chlorine, water vapour and incandescent coke includes a furnace made of refractory material and divided into two compartments by the grate 4, the upper one receiving the charge of coke, while water and chlorine are introduced into the lower compartment. Air is supplied through the pipe 7.
Patent GB-198205-A (GB)
Title: Improvements in doubling or folding machines for silk or other yarns
IPC: D01H13/16
Filed: 1922-05-20
Abstract: 198,205. Rushton, H. May 20, 1922. Stop - motions; thread guides.-Machines for folding or doubling silk, artificial silk, or other yarns or threads are provided with a tumbler lever B which, when an end breaks, is engaged by one arm c<1> of a detector lever C and moved so that a pin d' on the spindle head engages a pin b<3> and draws a hammer-head b on the lever between the spindle head and its driving pulley E. The hammer head is provided with a flat b<2> on which the spindle head rests after stoppage. The detector wires are mounted on hardwood or metal bushes F on wires G, and may be simultaneously lifted by a wire loop H. When the number of ends being doubled is less than the number of detector wires, the surplus wires may be held up by a plate N or by a coil spring M on a rod m. The traverse guide is provided with wires p, Fig. 2, which direct the yarn to the porcelain guide P.
Patent GB-757494-A (GB)
Title: Improvements in the preparation of refractory moulds for investment casting
IPC: B22C1/08
Filed: 1953-05-21
Abstract: 757,494. Mould materials. HOCKING, L. N. Jan. 28, 1955 [May 21, 1953], No. 14310/53. Class 83 (1). In a slurry for investment moulding, having fine and coarse refractory particles, the coarse particles are of a material of lower specific gravity than the finer particles, to prevent segregation during jolting. The fine material may be zircon, sp. gr. 4.65, particle size finer than 80 mesh and 40 per cent finer than 240 mesh. The coarse material may be aluminium silicate, sp. gr. 3.15, particle size 30-80 mesh. Alternatively, materials such as corundum, sp. gr. 4.0 or rutile, sp. gr. 4.2, may be used for the fine refractory and flint, sp. gr. 2.6, sillimanite, sp. gr. 3.23, or molochite for the coarse.
Patent GB-552465-A (GB)
Title: Improvements in machines for casting metals
IPC: B22D17/04
Filed: 1941-11-07
Abstract: 552,465. Casting-machines. MADISON-KIPP CORPORATION. Nov. 7, 1941, No. 14379. Convention date, July 16. [Class 83 (i)] In a die-casting machine the metal-forcing chamber 29 is supported by means embracing the nozzle 32 and permitting it to move longitudinally and by springs 42, strong enough to resist the reaction of the plunger 28 but able to relieve shrinkage stresses. The nozzle is kept in a groove in the upper edge of the pot 17 by a screw 48 of the cover 23. The ends of each spring 42 are secured by nuts 44 to studs which are screwed in the housing 16 and pass through flanges 25 of the cover and 21 of the pot. The centre of each spring is connected by a rod 41, guided in the cover, to a lug 35 of the chamber 29 extending into a recess 27 in the flange 25. Undesired movement of the pot may be opposed by a set screw 46.
Patent GB-1359978-A (GB)
Title: Easy-opening end closure having a repair coated rupturable interior score
IPC: B65D81/24
Filed: 1973-03-26
Abstract: 1359978 Easy-open can ends AMERICAN CAN CO 26 March 1973 [17 April 1972] 14402/73 Heading B8D [Also in Division B2] A non-metallic protective coating 50, which is provided on the interior surface of an easyopen sheet metal can end 10 and which is interrupted by a removable panel-defining score 18, is repaired by a non-metallic coat 56, which only partially fills the void defined by the score and presents an exposed concave surface. The can end is provided additionally with an exterior non-metallic protective coating 52, both coatings 50 and 52 being applied to an aluminium web prior to punching out can end blanks which are subsequently shaped and scored. The repair coat may be an acrylic resin, epoxy ester, or oil-modified alkyd applied by an electro-coating process or epoxy esters, modified epoxy, or vinyl chloride-vinyl acetate copolymers plus urea formaldehyde or melamine formaldehyde plus an epoxy resin applied by a spraying process. The can end is provided with an opening tab 30 riveted to the external can end side and a non-rupturable shallower score 16 in the can end interior surface inboard of the score 18. In modifications, the can end is of tin-free steel or tin-plated steel, Fig. 5 (not shown).
Patent GB-997559-A (GB)
Title: Improvements in or relating to waste-disposal apparatus
Filed: 1963-04-10
Abstract: 997,559. Comminuting refuse and sewage. T. C. R. SHEPHERD. April 10, 1964 [April 10, 1963], No. 14419/63. Heading B2A. Apparatus suitable for disposal of solid waste material including sewage and refuse from blocks of flats comprises a chamber 5 to receive the waste and a supply of water, an apparatus 16, 17 to break up solid waste and agitate the water in the chamber, and an apparatus 24 to receive water and dispersed waste from the chamber and comminute the waste which is discharged into a drain. As described, the chamber 5 includes a waste supply pipe 12 and a door 9 for removal of non-suspensible waste, and is supplied with water via a float-controlled pump or headertank (not shown). Each apparatus 16, 17 includes a motor-driven rotor 21 having ripping claws 23, and the inner surface of the bottom of the chamber may include hooks, so that waste can be torn apart between the hooks and claws, before it is drawn through the comminutor 24 by a pump 25. The apparatus may be operated continuously or intermittently at predetermined time intervals. In a second embodiment, the chamber 5 includes an upper cylindrical part 50, Fig. 3, and a further conical lower part 52 having a ledge 53 supporting a perforated plate 54 to restrain floating material beneath it. A waste pipe 55 extends into the chamber below the plate and an overflow pipe 57 extends from the upper part of the chamber into a drain down-pipe 58. A comminuting apparatus 60, comprising a motor-driven rotary impeller and a ring of teeth, discharges waste which has been previously broken up by a rotary apparatus 65, via a pipe 62, which includes a solenoidoperated diaphragm valve 63, operated intermittently to prevent excess waste-flow into the comminutor. A siphon pipe 66 may provide intermittent flow in place of the valve 63.
Patent GB-1072542-A (GB)
Title: Improvements in or relating to rack assemblies for electrical component panels
IPC: H05K7/18
Filed: 1965-04-06
Abstract: 1,072,542. Rack-mounted electrical equipment. SIEMENS A.G. April 6, 1965 [April 7, 1964; Feb. 17, 19651, No. 14465/65. Heading H1R. A rack assembly for housing electric circuit boards comprises a plurality of removable frames, each frame carrying a plurality of connection strips for removably receiving the boards, said strips being disposed parallel to one another in one plane. As shown, Fig. 2, a rack comprises four uprights 12 linked by pairs of runners 13 into which are inserted the siderails 14 of frames 2 which are secured in the rack by screws 15. Spring connection strips 3 are secured between the front and rear members of each frame, the strips having downwardfacing contact springs which electrically contact and hold suspended circuit boards (not shown); the boards are located by guide members 18, 19 mounted on a lower frame. Further connection strips 6, 7 receive inter-rack and inter-frame cable terminals respectively. Jumper wires and inter-strip cables (which may be guided in pockets &c.) are connected between terminals 20 on strips 3, 6, 7. The fronts 16 of the frames 2 may be provided with switching, monitoring, and safety devices. In other embodiments, the frames carrying the connection strips are mounted vertically, at the rear of the rack, being slidably inserted from the side (Fig. 4, not shown) or from the front (Fig. 5, not shown). Figs. 6, 7 (not shown) depict the formation of a cable form on the face of a vertical frame  remote from the circuit boards. The racks may be enclosed to form cabinets.