baber/WOPTO huggingface dataset:
Patent GB-817572-A (GB)
Title: Improvements in the dynamic braking of induction motors
Inventor: CHOUDHURY SHAFI-UDDIN AHMED
Filed: 1955-04-07
Abstract: 817,572. Control of A.C. motors. BRITISH THOMSON-HOUSTON CO. Ltd. April 6, 1956 [April 7, 1955; May 6, 1955], Nos. 10318/55 and 13220/55. Class 38 (3). An induction motor is braked dynamically when a change-over switch SW is actuated to disconnect the primary windings A of the motor from a three-phase supply S and to connect a capacitor C to two of the primary terminals so that the capacitor discharges into the primary windings. Rectified current is supplied to the same pair of terminals, this current being derived from the source S through transformer T and rectifier R. The capacitor C also serves to smooth the rectified current, and additional smoothing may be obtained by means of capacitor C1, de-coupled from the capacitor C by a resistor R1. During the early part of the braking period, the major influence will be exercised by the capacitor C and, as the braking effort due to the capacitor becomes less effective, that provided by the direct-current excitation becomes more important. In another arrangement, the capacitors C and C1 are connected to different pairs of primary terminals during the braking operation, and the uni-directional current is supplied to the remaining pair of terminals, so that the field due to the direct-current excitation is at right angles to that provided by the capacitors, Fig. 2 (not shown). A further smoothing capacitor may be connected directly across the secondary winding of the transformer and rectifier, this capacitor being de-coupled from the motor winding by means of a resistor so that it has little effect on the capacitive braking, Fig. 3 (not shown). When the motor is of the twophase capacitor type supplied from a singlephase source, braking is obtained by connecting a capacitor across one motor winding and applying the direct-current excitation to the other winding, Fig. 4 (not shown).
Patent GB-731527-A (GB)
Title: Improvements in or relating to the treatment of sulphides and sulphide minerals
IPC: C01B17/52
Filed: 1951-05-03
Abstract: Comminuted sulphur-bearing material such as pyrites is subjected to a distillation treatment to remove elemental sulphur and then to a roasting treatment in a separate zone to remove the remaining sulphur as sulphur dioxide, the gases emanating from the distillation step after removal of sulphur, e.g. by p  condensation, being applied in controlled amount <PICT:0731527/III/1> to the roasting treatment to regulate its temperature.  The roasting treatment is preferably in a fluidized bed, the distilling treatment may be either in a fluidized bed or in a close bed agitated by rabbling.  The roasting step may be followed by a third heat treatment, preferably fluidized, e.g. to reduce ferric oxide to magnetite, and the product after quenching may undergo wet magnetic separation.  In the apparatus shown in Fig. 1, all three stages are fluidized and the material flows from each bed to the next through conduits 13, 14.  The gases from the reduction stage 6 are passed to stage 4 to heat and fluidize the material undergoing distillation.  The distillation gases pass through a dust precipitator 27, waste heat boiler 28, and scrubber 29 to a fan 34 which forces them with additional air from 35 into the roasting chamber 5.  Sulphur dioxide leaves this at 21.  In a modification (not shown), the perforated hearth 9 is omitted from chamber 4 and the distillation is effected in a solid bed agitated by rabbling means, the necessary heat being supplied by conduction through the floor 7 of the chamber.  Instead of the supply of heating gases from chamber 6 a purging gas may be admitted at 191.  The conduit 13 is replaced by one leading from the edge of the chamber 4 at floor level, the material being directed into it by the rabbling means.
Patent GB-831462-A (GB)
Title: A door operating mechanism
IPC: E05F11/54
Filed: 1955-04-12
Abstract: 831,462. Doors for vehicles. LANE, J. G. April 11, 1956 [April 12, 1955], No. 10391/55. Class 103(2) [Also in Group XXV] A pair of vehicle doors Q are opened simultaneously by a manually or power operated pinion I which meshes with, and moves longitudinally, a master rack H, the ends of which engage the brackets K, J, mounted on the slide bar AB, to move the latter longitudinally. Racks F1F2 mounted on the slide bar mesh with pinions flf2 mounted on the door pivots to effect rotation of the doors Q. The bar AB is adjustable to permit the matching of the door positions. The doors are retained in the closed position by spring- loaded balls P in the door frame which engage cup ended cylinders O slidable within the lintel. The lost motion between the rack H and the slide bar brackets allows the operation, by the rod M, of a slide N to disengage the ball catches by uncovering the tops of the cylinders O prior to the start of the door opening movement.
Patent GB-809492-A (GB)
Title: Improvements in or relating to textile winding machines
IPC: B65H54/14
Filed: 1957-04-01
Abstract: 809,492. Thread winding machine traverse mechanism. ABBOTT MACHINE CO. Inc. April 1, 1957 [April 17, 1956], No. 10547/57. Class 120(2) A thread winding machine traverse mechanism comprises a reciprocating traverse rod, a slider frictionally gripping the traverse rod and reciprocated by it, a thread guide arm to traverse the thread and a thread guide carriage adapted to advance along the winding bobbin, the guide arm being operatively connected to the carriage and to the slider and controlled by both, the distance between the places of operative connection of the arm to the slider and to the carriage being less than the distance between this latter plane and the thread traversing part of the arm so that the linear movements of the slider are shorter and slower than the corresponding traversing movements of the thread so that high traverse speeds may be attained while the slider grips the traverse rod only lightly. The bobbin to be wound is placed between chucks 20, 21 and rotated by a motor 25 which also causes reciprocation of a traverse red 30. Cams C cause a bar 43, by cam followers 45, 46, 47, to advance continuously along the bobbin. A carriage 40 on the bar 43 is connected to a slider 50 on the rod 30 by a plate having upstanding portions 61, 62, Fig. 6, between which the slider 50, comprising a felt pad 56 held by a spring clip 57, reciprocates due to the rod 30 but which cause the slider 50 to advance along the rod 30 as the carriage 40 advances. Thread is laid on the package by a guide arm 65 which passes through a sleeve 71 pivoted on the slider 50 and is attached at 70 to the carriage 40. Specifications 588,718'and 604,354 are referred to.
Patent GB-674062-A (GB)
Title: Improvements in or relating to the filing of gramophone records
IPC: B25D13/00
Filed: 1949-04-21
Abstract: 674,062. Cabinets; handles. CHENOUARD, J. April 21, 1949. [April 21, 1948 ; Sept. 29, 1948] Nos. 10555/49, and 10556/49. Class 52 (i). [Also in Groups XV and XVII] An arrangement for vertical filing of gramophone records comprises a plurality of or groups of vertical wrappers side by side, and rods or rails extending in the plane of the wrappers from which the wrappers are suspended by their upper edge and on which they can slide horizontally in their plane of suspension so that the' front vertical edge of any wrapper may be drawn in front of the neighbouring wrappers. A wrapper 10, Fig. 1, for a record 24, formed from a folded cardboard sheet has an inverted V-shaped fitting 9 secured to the top edge which fits over and slides on a rod 4 resting by its turned over ends 7, 8 on the ends 2, 3 of a shelf 1 of a filing-cabinet, the fitting 9 being shorter than the rod 4. In a modification, the rod 4 is replaced by a metal bar having upturned wings to act as rails for a metal fitting secured to the top of the wrapper and having hook-like edges to slide on the rails. In the modification of Figs. 6 and 7, a single wrapper 35 is used to house a number of records 54, each in a separate jacket 50. Each collective wrapper 35, which is of cardboard, has a metal fitting 36 secured to the top and having turned over edges 37 to slide on rails 34 formed as bent up edges on slideways 32 secured to the top wall 31 of a casing. The front 43 of the casing may be partly slid into a false bottom 42 so that a pad 47 at the top of the front may be utilised for resting the withdrawn record. A spring blade 46 secures the front at its upper end and acts as an opening handle.
Patent GB-559022-A (GB)
Title: Improvements in or relating to measuring machines
IPC: G01B3/20
Filed: 1942-07-28
Abstract: 559,022. Linear measuring apparatus. PLAYER, D. S., LUND, J., and OPTICAL MEASURING TOOLS, Ltd. July 28, 1942, No. 10571. [Class 106 (ii)] An apparatus for linear measurements over a wide range comprises in combination a bed with a guide way thereon, a movable anvil head or tail-stock, a fixed head, a setting bar upon the bed carrying gauge marks, an optical magnifying device and fine adjustment device associated with the movable head, and a measuring device associated with one of the heads for accurately indicating the subdivisions between the gauge marks. In the form shown the bed 11, Figs. 1 and 2, has guide ways 14 supporting a fixed head 15 and movable head 16. A recess in the bed receives a setting bar 18 set in position by locating screws 21, 22. The surface of the bar 18 is formed with recesses 23, Fig. 6, to receive glass gauge blocks 24 located by blocks 25, a wedge 26 and springs 27, 28 and 29. On the upper surface of the glass block is a gauge mark 34 which after adjustment can be set accurately by pouring in a setting material such as a low melting point metallic alloy. The fixed head 15, as shown, comprises a distance block 36 and a measuring head 37 with a sliding anvil 38. The measuring head may be similar to that described in Specification 557,069. The movable head or tail-stock 16 carries a microscope ocular 46 through which an image 47 of a gauge mark 34 may be set with reference to engraved lines 48 on a screen. The setting is effected by a fine thread screw 49 mounted in a pedestal 50 which can be locked to the guides 14. The anvil 52 of the tail-stock is fixed relatively to the stock. Supporting rollers or other means may be provided between the anvils to support the workpiece. The setting bar may be made of material which has constant characteristics under changes of temperature.
Patent GB-808973-A (GB)
Title: Improvements in semiconductor devices and methods for their manufacture
IPC: H01L21/18
Filed: 1955-04-13
Abstract: Monocrystalline bodies of germanium silicon alloys are formed by the Czochralski seed crystal withdrawal method using a melt consisting of germanium and silicon.  In one embodiment a germanium seed crystal is pulled from a melt consisting of 99.9 mol. per cent germanium and 0.1 mol. per cent silicon at a rate of 0.3 mm. per minute.  Two methods of making monocrystalline alloys containing higher percentages of silicon are described.  In the first method a monocrystalline ingot is prepared by withdrawing a seed crystal containing 0.3 mol. per cent of silicon from a melt more heavily doped with silicon.  A seed crystal cut from this ingot is then drawn from a melt containing even more silicon.  The process is repeated until a monocrystalline ingot containing the required amount of silicon is obtained.  In the second method a seed crystal grown from a germanium silicon melt of certain composition is then pulled from a melt of the same composition to form a large monocrystalline ingot.  For example, a seed cut from a crystalline mass solidified from a melt consisting of 50 mol. per cent silicon and 50 mol. per cent germanium or 75 mol. per cent silicon and 25 mol. per cent germanium is pulled at a rate of 0.1 mm/minute from a melt of similar composition maintained at 3 to 4 degrees above its freezing point.  Specification 636,248, [Group II], is referred to.ALSO:Materials suitable for use in semiconductor devices (see Group XXXVI) consist of monocrystalline germanium-silicon alloys.  One such alloy prepared by withdrawing a seed crystal of germanium from a suitable melt consists of 0.3 mol. per cent silicon and 99.7 mol. per cent germanium.  Alloys produced from melts consisting of 50 mol. per cent silicon and 50 mol. per cent germanium, and of 75 mol. per cent silicon and 25 mol. per cent germanium by withdrawal of seed crystal cut from ingots solidified from melts of similar composition are also described.  The following etching solutions suitable for cleaning the surface of semiconductor devices made from such alloys are described: (1) 5 parts of 70 per cent nitric acid, 5 parts of 52 per cent hydrofluoric acid and 1 part water.  (2) Equal parts of 70 per cent nitric and 52 per cent hydrofluoric acids and water.  (3) 80 parts of 70 per cent nitric acid, 50 parts of 52 per cent hydrofluoric acid, 50 parts of 99.5 per cent glacial acetic acid, and 1 part bromine.  Specification 636,248 is referred to.
Patent GB-554612-A (GB)
Title: Improvements in or relating to clogs
IPC: A43B13/28
Filed: 1942-07-31
Abstract: 554,612. Clogs. WOOLLEY, A., and RATCLIFFE, A. July 31, 1942, No. 10769. [Class 17 (ii)] In making a clog without any metal or metallic fastenings, the upper 10 is secured in a recess in the upper edge of the clog sole 12 by stitching 18, the sole, optionally, having previously been provided with perforations 20 to receive the stitches, the lower ends of which are located in a recess formed by an inclined portion 14 in the clog sole. This inclined portion may extend to the tread, and be filled in with a wooden fillet held in place by cement and wooden pins. The clog may be provided with toe and heel stiffeners. There are no eyelets in the holes for the lacing.
Patent GB-798845-A (GB)
Title: Improvements in or relating to road or like sweepers
Inventor: CAUDWELL PHILIP GORDON
IPC: E01H1/05
Filed: 1956-04-09
Abstract: 798,845. Road sweepers. ALLEN & SONS (OXFORD), Ltd., J. April 9, 1957 [April 9, 1956], No. 10791/56. Class 107 A road sweeper, particularly one as disclosed in Specification 781,675, has an auxiliary brush 25 mounted on a beam 20, releasably pivoted to the machine frame at 21 and driven by friction wheels 34 (only one shown) through a belt 37, the wheels 34 engaging the sides of the tyre of one road wheel 12. Screw adjustment means 44 allows the height of the auxiliary brush to be varied.
Patent GB-591889-A (GB)
Title: Improvements in machines for the liquid treatment of textile material
IPC: D06B5/00
Filed: 1945-04-30
Abstract: A machine for dyeing, bleaching, washing, finishing or similar liquid treatments for textile products comprises a vat 1 for the treating bath, including a cylindrical body and a conical bottom 2 therefor, a perforated false bottom 3 between the vat body and its conical bottom, a distributer 6 adapted to rotate inside the vat underneath the false bottom having an aperture which sweeps the underside of said <PICT:0591889/IV/1> false bottom, a propeller 4 adapted to such the bath upwards through the perforated false bottom to force it inside the rotary distributer, a frame 42 on the outside of the vat, driving means carried by said frame in the vat, a propeller shaft 18 driven by and depending from said driving means, a tubular distributer shaft 12 surrounding concentrically said propeller shaft, provided with perforations at its upper end, driven by and depending from the driving means and opening inside the conical bottom, to allow some of the liquid to be driven into it and to pass through its perforations towards its outer surface a stationary vertical tube 10 surrounding coaxially said distributer shaft, rigidly connecting the casing with the false bottom and provided at its upper end with perforations for pouring the bath stream over the bath level in the vat, and means for admitting steam into the space between the distributer shaft and stationary tube.
Patent GB-799124-A (GB)
Title: Machine for the insertion of loose paper sheets into stapled ones
IPC: B65H39/06
Filed: 1957-04-03
Abstract: 799,124. Sheet-delivery apparatus. MULLER, H. April 3, 1957 [May 9, 1956], No. 10886/57. Class 100(1) A machine for inserting loose sheets 8 into stapled sheets 7 comprises two carrier members 9, 3 on to which the sheets are fed by conveyer devices 2, 1 respectively and an ejector member 12 which passes upwardly between slots in the carrier members 3, 9 to insert the sheets 8 into the sheets 7 and deliver the associated sheets to a further conveyer device 15. The conveyer 15 comprises a plurality of rubber belts 13, 14 spaced apart by an amount corresponding to the spacing of cut-outs 16 provided in the injector member 12.
Patent GB-1104914-A (GB)
Title: New azo dyestuffs of the halogenotriazine series
Inventor: GRIFFITHS GEOFFREY
IPC: C09B62/085
Filed: 1964-04-07
Abstract: Reactive azo dyes of formula T2-A-N = N-E-T1 in which A is a radical of a diazo component of the benzene or naphthalene series, E is a radical of a pyrazolone coupling component connected to the azo group in the 4-position of the pyrazole ring and carrying in the 1-position of the pyrazole ring an aromatic carbocyclic radical, T2 and T1 stand for the same or different chloro-s-triazine radicals connected to carbon atoms in A and E by way of nitrogen atoms and which dyes have at least one sulphonic acid group are prepared by usual condensation and coupling processes.  In particular the radical A is a disulphonaphthalene or sulphophenylene radical and T2 and T1 are each a 4-chloro-s-triazin-6-yl radical in which the carbon atom in the 2-position of the triazine nucleus carries an anilino radical having a sulphonic acid group and which can in addition contain SO3H, COOH, CH3, Cl, or CH3O substituents on the benzene ring or have a CH3 group attached to the nitrogen atom.  The dyes give greenish-yellow and reddish-yellow shades on cellulosic materials.
Patent GB-558805-A (GB)
Title: Improvements in chimney cowls
IPC: F23L17/02
Filed: 1942-08-06
Abstract: 558,805. Chimney tops. SCHRADER, W. Aug. 6, 1942, No. 11015. [Class 25] A chimney top for use with single or multiple flues comprises a rectangular base member 10, Figs. 2 and 3, supported on the flue 11 and having a tapered central opening 12 and bevelled sides 14 forming openings communicating with apertures 17 in a superposed member 16, Figs. 2 and 4, having a tapered central opening 20 and overhanging the base member. A tapering frusto-pyramidal member 23 rests on the member 16 so as to form a ledge 19 in which the apertures 17 are arranged. When applied to multiple flues 30, as shown in Fig. 6, the abutting edges of the members 16 are modified so that the passages 17 of adjacent members are in communication.
Patent GB-1178235-A (GB)
Title: Improvements in Dry Separation of Mixtures of Solid Materials
Inventor: DOUGLAS EDWARD
IPC: B03B5/46
Filed: 1966-03-14
Abstract: 1,178,235. Separating solid materials. NATIONAL RESEARCH DEVELOPMENT CORP. 10 March, 1967 [14 March, 1966], No. 11067/66. Heading B2H. A mixture of pieces of material of different densities is separated by feeding the mixture to a fluidised bed 4 of separating material with an effective density lying between the densities of the materials to be separated and separately discharging the lighter "float" products and heavier "sink" products, the arrangement being such that the separating material is caused to move along the bottom of the bed in a direction opposite to that of the discharge of the float products. As shown the apparatus is vibrated by suitable means so that material lying on the deck 5 is moved towards the right hand end of the apparatus the lighter products flowing over weir 2 onto a screen 8, the heavier products being elevated to a screen 9.
Patent GB-876709-A (GB)
Title: Improvements in pilot operated valve member
Inventor: BRAKEBILL HAROLD GENE
IPC: F16K31/40
Filed: 1959-04-01
Abstract: 876,709. Valves. ROBERTSHAW-FULTON Co. April 1, 1959 [July 17, 1958], No. 11101/59. Class 135. A resilient valve member 32 of rubber &c. has a passage 64 with a seat 66 for a pilot valve 26 and is reinforced by a cup-shaped stiffener 48 having holes 54 into which extends the resilient material of the valve member. The valve member coacts with a seat 16 between an annular inlet 12 and an outlet 14 and is slidable in a cylinder 18, being guided by the periphery of the stiffener and by radial ribs 44 which enter the outlet and extend to the same diameter as a small cylindrical part 42 which prevents " hammer " on closing. Chambers 17, 19 on either side of the valve member, which has a sealing lip 38, are interconnected by an orifice 62 in the stiffener. A corresponding orifice 46 in the resilient material is of larger diameter so that the effective size of the orifice is unaffected by deformation of the resilient material due to variations of pressure. The pilot valve, which opens to relieve pressure from the chamber 19 to allow the valve member 32 to open, may be arranged to open or to close in response to energization of a solenoid 30.
Patent GB-1451187-A (GB)
Title: Device for mounting chassis details onto an automobile body
IPC: B62D65/00
Filed: 1975-03-18
Abstract: 1451187 Elevating apparatus VOLVO AB 18 March 1975 [22 March 1974] 11123/75 Heading B8L Elevating apparatus for assembling chassis components on to an automobile body, comprises a mobile platform 2 having upstanding pillars 3 and 4 at the four corners thereof, body support arms 9 pivotally mounted to the tops of the pillars, and a fixture frame 5 supported between the pillars and vertically movable therealong to offer chassis components to the body and further to lift the body from the support arms 9 which are then swung clear of the body permitting the whole automobile to be positioned by the frame 5. The support arms 9 which are movably lockable by bolts 13 in either a body supporting position or a clearance position when rotated about vertical -axes 10, incorporate body supports 11 and 12. The ends of the frame 5 are formed with transverse bars, the ends of which slide in vertical slots in the pillars 3 and 4 and are driven by screw and nut mechanisms motivated from a common source. Alternatively the frame 5 is lifted and lowered by separate lifting equipment.
Patent GB-997422-A (GB)
Title: A grip device
IPC: B66C1/54
Filed: 1964-03-17
Abstract: 997,422. Lifting devices. G. J. FREDHOLM. March 17, 1964 [April 5, 1963], No. 11133/64. Heading B8H. A lifting device 100 is adapted to enter the apertures of plates 1 and 2 and subsequently to raise by engagement either the top plate or, alternatively, both the top plate together with the bottom plate. Thus, the device is furnished with longer engaging legs 15 and shorter engaging legs 30, each being pivoted at 17 and 31 respectively to a frame 8, and being operated respectively by the up and down movement of parts 4 and 36. Their movement is controlled by the rotational position of disc 45 which is pivotally carried by frame 8 and co-operates with lugs 49 positioned on the frame. Frame 8 also carries shoulders 48 which may engage either with extension 40 of part 4 or with part 36. Frame 8 mounts a loosely sliding stem 5 which is lifted at 6 by the hook of a crane. Operation.-In a first position, disc 45 is set to be engaged and locked by lugs 49 to frame 8. When stem 5 is raised by the crane the stem engages the frame by means of flange 7 so that the frame is raised with all four lifting arms free, so that neither ring 1 nor ring 2 is raised. In this position when the frame 8 is required to be lowered the lifting arms are free to enter the central apertures of the rings and move into lifting position. In position 2, the disc 45 is rotated so that shoulders 48 are positioned to engage the extension 40 of part 4. On elevation, this causes the longer arms 15 to move outwards to engage disc 2 so that both disc 2 and disc 1 are elevated by the crane. In position 3 disc 45 is rotated so that elevation causes shoulders 48 to engage part 36 to actuate the shorter arms 30 so that these engage the disc 1 which is raised by the crane leaving disc 2 in its original position. The operator rotates a disc 50 (not shown) to cause rotary displacement of disc 45.