baber/WOPTO huggingface dataset:
Patent GB-1349865-A (GB)
Title: Opening of filter presses
IPC: B01D25/172
Filed: 1971-04-19
Abstract: 1349865 Filter press opening mechanisms KURITA MACHINERY MFG CO Ltd 19 April 1971 [7 Feb 1970 28 Nov 1970] 20296/71 Heading BID  A mechanism for transporting filter press plates individually comprises a transport assembly 10 mounted upon a reciprocable drive chain 9. As shown the transport assembly includes pivotally mounted anti-clockwise biassed drive and stop dogs 12, 16 and a pivotally mounted idle member 22. Pins 15, 19 limit the movement of the dogs. Upon driving to the left the drive dog 12 abuts a handle 7 on the foremost filter plate and is urged downwardly so enabling it to pass beneath the handle and spring up on the other side. In so doing the drive dog causes the idle member 22 to erect the stop dog 16 against its bias. Upon contact of the stop dog with the handle 7 the direction of drive is reversed so that the drive dog 12 abuts the rear side of the handle to transport the foremost plate to a movable filter clamp (not shown). The pressure of the idle member against the stop dog is thus relieved to allow it to become inclined again in preparation for the transport of the next plate. In modifications (not shown) the idle member 22 is presented in different forms, e.g. a horizontally slidable roller or rod, a toothed gear which engages with toothed gears on the dogs, a double armed pivot whose arms engage abutments on the dogs. In other modifications (not shown) the dogs themselves are provided with arms for direct abutment with each other.
Patent GB-1185043-A (GB)
Title: Improvements in Couplings for Establising a Driving Connection Between Rotatable Driving and Driven Members
Inventor: WEBB OSWALD
IPC: F16D13/52
Filed: 1966-05-07
Abstract: 1,185,043. Ratchet clutches. HARRY FERGUSON RESEARCH Ltd. 4 May, 1967 [7 May, 1966], No. 20317/66. Heading F2C. In a ratchet clutch assembly a pair of cam plates are arranged to separate on relative rotation in one direction, first and second clutches have elements connected to the cam plates and co-operating elements connected to the driving and driven members, the clutches being engageable on separation of the cam plates, and restraining means prevent rotation of one of the cam plates in one direction. As shown balls 18 engage cam grooves 19 in plates 16, 17 which are coupled through disc clutches 14, 15 with the flanges 12, 13 of driving and driven shafts 10, 11, the clutches normally being lightly engaged by loading springs 21 housed between the cam plates 16, 17. The plate 17 is connected by a ring 23 to one element of an auxiliary oneway clutch 20. As viewed from the left counterclockwise rotation of drive shaft 10 causes separation of cam plates 16, 17 to fully engage clutches 14, 15 and drive the output shaft 11. The arrangement permits over-running of the shaft 11. With reverse clockwise drive, plates 16, 17 are not forced apart and the lightly engaged clutches 14, 15 transmit drive between shafts 10, 11. Clutch 20 operates to prevent clockwise rotation of plate 17 so that clutch 15 may slip to permit over-running of shaft 11. In this condition shaft 10 may also over-run shaft 11. Modifications (not shown) include:- (a) the provision of wedge surfaces (25, 26) between cam plate 17 and clutch 20 to allow shaft 11 to be rotated clockwise with minimum effort while a counter-clockwise torque is applied to shaft 10, Figs. 4-6; (b) the provision of screw stops (27) to limit axial movement of cam plate 17 to the left to prevent locking of clutch 14, Figs. 7-9; (c) the connection also of cam plate 16 to a brake or one-way clutch (29) to allow both shafts 10, 11 to over-run in either direction, Figs. 10-12; (d) the substitution of a one-way sprag clutch (30) for friction clutch 14, thus rendering stops (27) unnecessary, Figs. 13, 14. The clutch assembly may be incorporated in a limited slip differential for a motor vehicle or in a workpiece feed mechanism for a pressing or punching machine.
Patent GB-1032865-A (GB)
Title: Improvements in or relating to releasable fastening devices
Inventor: WHITE MAURICE WILLIAM
IPC: E05B65/19
Filed: 1962-05-26
Abstract: 1,032,865. Latches. WILMOT-BREEDEN Ltd. May 8, 1963 [May 26, 1962], No. 20340/62. Heading E2A. A releasable fastening device comprises a rotary, generally forked-shaped latch member 4, a striker pin 5a, Fig. 3 (not shown) and latchretaining means comprising a retaining member 10 which turns with the latch member 4 and a retaining lever 13 having a projection 12 which engages a front face 14 of the retaining member 10 to hold the latch member in the latched position, the lever being urged to the retaining position and the retaining member having a smooth rear face 22 with which the projection 12 engages in the unlatched position and along which it slides as the latch member returns to the latched position. As shown, the device is applied to a rear upper window of an estate car type of vehicle having a lifting handle 7, Fig. 2 (not shown). The latch member is biased to the unlatched position by a spring and the retaining member 10 is fixed to the spindle of the latch member. The lever 13 is actuated by a push button 19 which may include a key operated locking device.
Patent GB-1445966-A (GB)
Title: Cooling process
IPC: F25D3/10
Filed: 1975-05-14
Abstract: 1445966 Refrigeration GRIESHEIM GmbH 14 May 1975 [15 May 1974] 20349/75 Heading F4H A cooling chamber 5 is cooled by the circulation, by a pump 4, of a slush formed from a gas, e.g. nitrogen, hydrogen, argon, neon, oxygen, carbon monoxide or krypton, in the reservoir 1. In the cooling chamber 5, the slush takes up its heat of fusion and a triple point liquid remains, which is returned to the reservoir, where it is again converted into slush by drawing off the gas through a vacuum pump 3. The gas drawn off is replaced by liquefied gas at its boiling point from a storage container 8 connected to the reservoir 1 by a pipe 10. The process may be used in the cooling of superconductors or of magnets in magnetic-cushion traction.
Patent GB-425985-A (GB)
Title: A process of and apparatus for de-liquefying a liquid suspension of solid materials
IPC: D21F11/08
Filed: 1933-07-19
Abstract: 425,985. Filters; paper-making machines. DEHN, F. B., 103, Kingsway, London.- (Engert, G. A., Gibson, G. B., and Gibson, G. K., [trading as Sonbert Machine Co.]) ; 435, North Michigan Boulevard, Chicago, U.S.A.) July 19, 1933, No. 20378. [Class 46] [See also Group VIII] Apparatus for separating suspended matter from liquids, specially applicable for making paper, comprises an endless wire band 10, Fig. 1, which passes round a rotary suction drum 15 in a vat 33 to which liquid containing suspended matter is supplied from feed boxes 35, 36. The whole interior of the drum 15 is under vacuum, the part above liquid level being covered by a shield 14. The shield is provided with auxiliary suction boxes 27, 29, with which the'band contacts as it approaches and leaves the drum, the band being thus exposed to suction during the whole period of its passage through the liquid. The drum is supported by a shaft 25 and comprises hubs 24, spiders 23, end rings 45 and two layers of wire mesh 21, 22. The shaft 25 is carried in bearings 51 in hinged end-covers 46 on the vat. Joint between the rings 45 and rings 47 on the vat are made by means of packing belts 50. The covers 46 have apertures 53, 48 connected to suction pipes, the liquid drawn into the drum being discharged through the lower apertures 48. The shield 14 has side plates 55, secured to the side walls of the vat, and table rolls associated with the suction bosses 27, 29. In the case of a paper-making machine the web formed in the machine is carried by the band 10 over a suction box 16, between a suction press roll 17 and a couch roll 18, over table rolls 19 and suction boxes 20, and leaves the wire 10 as the latter passes round a driven roller 11. Apparatus for making three-ply paper is described comprising three elements as shown in Fig. 1, the web from the first element being delivered on to the web from the second element and the two rolled together before delivery on to the web from the third element.
Patent GB-299835-A (GB)
Title: Improvements in and relating to the manufacture of titanium oxide
IPC: C09C1/00
Filed: 1927-08-02
Abstract: 299,835. Stephens, F. G. C., Anderson, L. J., and Cash, W. A. Aug. 2. 1927. Pigments.-In the treatment of a titanium sulphate solution with a soluble alkaline earth salt solution, e.g. of barium chloride, the former is added gradually to a prepared bulk of the latter. Preferably the temperature is maintained at 25-40 C., say at 30-35 C., during precipitation of the alkaline earth sulphate, and is thereafter raised to and maintained at about 100 C. until substantially all the titanium in solution is precipitated. The conditions may be such that the particles of the composite precipitate are just sufficiently large to be filterable; for instance the one solution may contain 16 per cent of titanium dioxide as sulphate, and the other 100 parts of barium chloride to 750 parts of water. The filtered and washed precipitate may be suspended in water and have added thereto a small quantity of boric acid or a borate prior to calcination, in the manner described in Specification 273,017. Titanium sulphate for use in the process may be obtained from the ore by the process described in Specification 256,734, [Class 1 (iii), Oxides &c., Metallic], for instance, the finely ground ore may be mixed with water to form pulp or slurry which is agitated whilst there is added rapidly thereto the requisite quantity of oleum.
Patent GB-1163378-A (GB)
Title: Vibration Inhibiting means for Band Saws
IPC: B23D55/00
Filed: 1968-04-30
Abstract: 1,163,378. Sawing. CONTINENTAL MACHINES Inc. 30 April, 1968 [30 Jan., 1968], No. 20454/68. Heading B5L. [Also in Division B3] A band-type cutting machine comprises an endless flexible cutting band 9 with toothed or abrasive cutting edge entrained over pulleys 7, 8, power means 12 for driving one 8 of the pulleys, and means for absorbing vibration producing shock impulses resulting from forces tending to cause fluctuations in band speed as work is being cut, the means comprising a rotary element connected to or forming part of one of the pulleys and sensitive to the forces that tend to cause fluctuations in the band speed, another rotary element 16 which rotates at a constant speed during operation of the machine, complementary contacting friction surfaces on the elements, and means 24 to maintain the surfaces in frictional engagement. The pulley 8 is driven by a belt drive and variable speed unit 14 from a motor 12. The shaft 15 of the pulley has the rotary element 16 keyed thereto, the element having a flange 17 against which the pulley 8 is pressed into frictional engagement by a collar 21 engaged by springs 22. Pins 26 in the collar are located with clearance in holes 27 in the pulley to permit the pulley to move against the frictional resistance relative to the flange 17 which rotates at constant speed, the movement absorbing the forces caused by fluctuation of the band speed. In another embodiment, the forces caused by fluctuation of the band speed are absorbed by friction between surfaces 30, 31, Fig. 5, on the idler pulley 7 and a flywheel 28 urged together by springs 34.
Patent GB-955800-A (GB)
Title: Improvements in radial mounting arrangements for the shafts of high-speed machines provided with gas bearings
IPC: F01D25/22
Filed: 1960-06-10
Abstract: 955,800. Fluid bearings. ESCHER WYSS A.G. June 10, 1960 [June 23, 1959], No. 20504/60. Heading F2A. In a mounting arrangement for a hollow shaft provided with fluid bearings at least one of the bearings is located in the interior of the shaft, is mounted on a rigid support-pin which projects into the shaft, and is fixed to the outer circumference of a diaphragm, the centre portion of which is fastened to the pin. In an embodiment, the hollow shaft 35, having a blower-wheel 15 thereon which supplies pressurized gas to the bearings, is supported by bearings 36, 37 which are mounted on diaphragms 41, 43. The latter, which allow self-adjustment of the bearings, are clamped to support-pins 38, 39 which are attached to a member 40 and a cover 42 respectively.
Patent GB-279202-A (GB)
Title: Improvements relating to thermionic valve amplifier circuits
IPC: H03F1/13
Filed: 1926-08-21
Abstract: 279,202. British Thomson-Houston Co., Ltd., and Kinman, T. H. Aug. 21, 1926. Thermionic amplifiers.-In an amplifier employing one or more stages of resistance or chokecapacity coupling and a common source of hightension S, means such as a condenser C3 is provided for ensuring that undesired oscillations of the natural frequency of the filter circuit C1, L, do not react through the plate resistances R and coupling condensers to the grids of -the valves. A high-impedance L2, of low resistance compared with the coupling resistances, and a low-frequency by-pass condenser C2 are connected between the points from which the supply to the final valve is taken and the resistance-capacity coupled stages. The invention is also applicable when no filter circuit is used, but there is a resistance drop in the high-tension source, for example a dry battery.
Patent GB-874018-A (GB)
Title: Improvements in or relating to nuclear reactor moderator structures
Inventor: HACKNEY STANLEY
IPC: G21C5/08
Filed: 1957-07-01
Abstract: 874,018. Nuclear reactors. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. July 1, 1958 [July 1, 1957], No. 20779/57. Class 39(4). A restraint device for a graphite moderator structure comprises wedges arranged to impose radially - acting forces between the moderator and a containing vessel, the forces being applied by thrust rods 13 loaded by springs 15 in tubes 14 passing through the vessel and into shielding 30 so that the spring is protected from radiation and accessible from outside the shield. A compression plug 34 is provided. The wedges are formed from cuboids by two diagonal cuts (Fig. 2). A ring of wedges is provided for each layer of moderator blocks and the angle between the cuts is made more acute as the load on the wedge increases. The structure and containing vessel 12 are enclosed in a pressure vessel 29.
Patent GB-336212-A (GB)
Title: Improvements in or relating to grinding, crushing and mixing mills
IPC: B02C15/14
Filed: 1929-07-06
Abstract: 336,212. Wass, J. July 6, 1929. Rotary mixers.-In a mill of the edge runner type for mixing or grinding materials comprising one or more conical rollers co-operating with a sloping portion of a pan, each roller is mounted on an axle carried by a pivoted arm, movable for raising the roller from the bottom of the pan, and means are provided for holding the arm in the raised position when the mill is to be used for mixing only. The pan 2 is revolved by wheels 29, 30 and the roller 1 is mounted on an arm 4 pivoted at 5 to a fixed frame 6. The arm is supported in a stirrup 9 connected to a crosshead 10. A screw 11 passes through the crosshead and bears on a spring 11<c>, Fig. 3, carried by a socket attached to the frame 6. The panspindle 2<a> passes through the arm 4 and is encircled by a spring 7 which bears on the arm and is adjusted by screws 8. By these means the pressure on the roller and the distance between the roller and pan may be adjusted. Curved deflectors 12, 13 guide the material under the rollers, the deflector 13 being provided with a removable and adjustable end 14. Another curved deflector 18 is mounted on a lever 19 so that it may be dropped to form a continuation of the deflector 12 when mixing only is required, or when the mill is discharging after grinding or mixing. When discharging the contents over the edge of the mill another deflector 22, mounted on a lever 23, is lowered to form a continuation of the deflectors 12, 18. A pivoted scraper 26 is provided to clean the edge of the pan. The pan may be tipped about an axle, either fixed or mounted on wheels, when discharging its contents, handles being provided on the framework for this purpose.
Patent GB-997735-A (GB)
Title: Self-locking threaded fastening devices and methods and apparatus for making such devices
IPC: B23G9/00
Filed: 1964-05-20
Abstract: 997,735. Locking screw-threaded members. NYLOK CORPORATION. May 20, 1964 [May 20, 1963], No. 20842/64. Heading F2H. [Also in Division B3] A self-locking screw B has an axial elongated recess punched through its threads, a strip i of resilient material, e.g. nylon, being inserted in the recess and the ends of the crests of the threads staked inwards and flattened at f to hold the insert in position. The screw is slightly oval in cross-section.
Patent GB-1196205-A (GB)
Title: Prefabricated Floor
Inventor: MITCHELL GRAHAM GEORGE
IPC: E04F15/00
Filed: 1968-05-03
Abstract: 1,196,205. Prefabricated drainage floor. GRAMALL INDUSTRIES PTY. Ltd. 3 May, 1968, No. 21064/68. Headings E1K and E1W. A prefabricated drainage floor includes a drain opening through the floor and members positioned beneath the floor near its periphery of such height that the floor surface adopts a desired slope towards the drain opening whilst the undersides of the members lie in a substantially horizontal plane. Stiffening means provided beneath the floor surface may comprise channel members placed in side-by-side contact, a grid structure unitary with the floor or a plywood panel supporting a composition backing member. The members which determine the floor slope may comprise pressed metal channel members set to appropriate longitudinal taper or blocks of graded thickness. A peripheral cowing may be upstanding from and unitary with the floor. Three embodiments are described with reference to Figs. 1 to 3, 4, 5 and 6 (not shown).
Patent GB-444535-A (GB)
Title: A process for refining hydrocarbon mixtures
IPC: C10G21/14
Filed: 1935-07-29
Abstract: Hydrocarbon oils such as lubricating oil distillates are separated into their components by extraction with a selective solvent for non-paraffinic components in the presence of a polycyclic aromatic hydrocarbon.  Mixtures of naphthalene with furfurol are excluded. Aromatic hydrocarbons specified are, naphthalene, poly-alkyl naphthalenes; diphenyl, ditolyl, diphenyl alkanes, such as diphenyl-methane or ethane, stilbene or tolane, or partially hydrogenated products of these; anthracene, or homologues thereof; phenanthrene, retene, triphenylmethane, triphenyl benzene, or indene. Mixtures of these substances may be used, alone or diluted with light naphtha, benzene or toluene. Concentrated extracts of bicyclic hydrocarbons obtained from mineral oil may also be used, especially from naphthenic mineral oil fractions boiling between 180 and 300 DEG C.  Selective solvents specified are, sulphur dioxide, furfural, dichlorethyl ether, acetone, nitromethane, nitrobenzene, dimethyl sulphate or sulphite, methyl formate, phenols, nitriles such as aceto-nitrile or benzonitrile, amines, pyridine, quinoline, isoquinoline, quinaldine, picoline, butidine, thiophene aldehyde, alcohols, glycol, esters or nitrogen bases from petroleum.  The extraction may be effected in a batch process or by flowing the oil and solvents in countercurrent.  A part of the extract may be drawn off, freed from solvent and returned to the extraction zone.  The oil may be pre-extracted with the selective solvent alone to remove a part of the naphthenic constituents before the main extraction.  The raffinate and extract are finally freed from solvent by centrifuging or distillation.
Patent GB-973672-A (GB)
Title: Improvements relating to alternating current control circuits
Inventor: WALKER ALEC HERVEY BENNETT
IPC: H02P1/42
Filed: 1962-06-05
Abstract: 973,672. Condenser arrangements; control of A.C. motors. WESTINGHOUSE ELECTRIC CORPORATION. June 5, 1962, No. 21604/62. Headings H2H and H2J. The alternating current through a load 3, connected to A.C. supply terminals 1, 2 through a semi-conductor diode 4 and a capacitor 5, is controlled by varying the times of triggering pulses applied to the control leads 8, 9 of a semiconductor rectifier 6 during the appropriate half cycles of the supply waveform. Fig. 2 shows an arrangement in which a capacitorstart motor having a normal-run winding 11 is started by rendering the rectifier 6 conductive, members 4, 5 being in series with the start winding 10. In other applications the triggering pulses may be made responsive to the supply waveform so that the capacitor 5 is switched in and out at an instant of zero waveform magnitude.
Patent GB-599251-A (GB)
Title: Improvements in or relating to press-fitted, shrunk or like joints and to methods ofassembling and separating them
IPC: F16B4/00
Filed: 1943-12-24
Abstract: 599,251. Assembling force fits ; jointing. AKTIEBOLAGET SVENSKA KULLAGERFABRIKEN. Dec. 24, 1943, No. 21676. Convention date, Dec: 31, 1942. [Class 83 (iv)] To facilitate the separation and assembly of parts that engage with a force, shrunk, &c. fit, an intermediate member is employed between the joint surfaces and means are provided to supply fluid under pressure to one joint surface. The intermediate member 9, Fig. 1, is thin enough to be easily contracted on to the shafts 1, 2 by pressure from the sleeve 5 and is about half as long again as the sleeve. It is assembled initially on the shaft 1 with about one-third of its length projecting and the sleeve 5 is shrunk &c. fitted over it so as to be entirely over the shaft 1. The shaft 2 is now entered into the member 9 to abut the shaft 1 and connection is made at 8 to a source of oil under pressure sufficient substantially to relieve metallic pressure between the parts 5, 9 by forcing its way, by the duct 6 and annular recess 7, between them. The sleeve 5 is now moved into position over both shaft ends as shown in the Figure. The ends of the bore in the sleeve 5 are slightly flared at 10. This has the effect of increasing somewhat the specific pressure between the surfaces near the ends and reduces endways leakage of oil. In a modification, the interposed member has a tapered internal surface and the sleeve 5 is tapered internally to correspond. The duct 6 is placed somewhat nearer the smaller end and, since the taper permits assembly and separation with only a small axial movement to apply or relieve the pressure, pressure oil may be used to effect the assembly without the use of heat &c. The taper may be such that the axial component of the pressure due to the oil will itself suffice to effect separation of the parts. The invention may also be used when heavy press, shrunk or like fits are required such as in mounting fly-wheels on, and removing them from, shafts. The Specification as open to inspection under Sect. 91 describes a further form of shaft coupling employing a taper member 11, Fig. 6 (Cancelled), and a sleeve 5 tapered correspondingly to the bore to maintain an equal thickness of metal. The duct. 6 is centrally placed and leads to a shallow helical distributing channel 19 terminating just short of the flared. ends of the sleeve. In the case of a coupling flange, the duct leads through the flange to a groove situated at this end of the coupling. The inner race 29, Fig. 8 (Cancelled),of a roller bearing is mounted on the end of a shaft 26 by an interposed taper sleeve 28 split at 27 and having a duct 30, 31 leading to both surfaces. The subject-matter of Specification 599,304 is also comprised. This subject-matter does not appear in the Specification as accepted.