baber/WOPTO huggingface dataset:
Patent GB-1523162-A (GB)
Title: Liquid crystal displays
IPC: G09G3/36
Filed: 1976-01-27
Abstract: 1523162 Matrix display DEFENCE SECRETARY OF STATE FOR 27 Jan 1976 [11 Feb 1975] 5838/75 Heading G5C To switch rapidly a liquid crystal matrix display, as in Specification 1,502,280, a highblanking. voltage is applied across all areas to make them transparent (ON), subsequently reduced to a lower sustaining level equal to threshold, after which selected areas are allowed to relax to the opaque (OFF) state by a near zero addressing voltage, the sustaning and near zero voltages being obtained from two square waves V 1 , V 2  both of threshold arms value, 45 degrees apart in phase, so that their difference (Fig. 3, not shown) also has the same r.m.s. value. In a cartesian array, typically 12 Ám. thick, containing nematic with, e.g. 10% cholesteric material between transparent, e.g. SnO 2 , electrodes (Fig. 2, not shown), after the end of the blanking voltage V 1  is applied to all Y electrodes Y 1 , Y 2 , Y 3  while zero voltage is applied to all X electrodes X 1 , X 2 , X 3  to provide sustianing voltage across all areas. Then to convert, e.g. one area x 2 , y 2  to the OFF state, V 2  is applied to both X 2  and Y 2  electrodes, the voltages on all other electrodes remaining unchanged, giving threshold r.m.s. level across all areas except those addressed. Other areas may be addressed in sequence, or by line-byline scanning. Polar and seven-segment arrays may be similarly addressed. The liquid crystal material may contain a dye.
Patent GB-882109-A (GB)
Title: Chair frames
IPC: A47C7/00
Filed: 1958-02-24
Abstract: 882,109. Chair frames. ERVEN, J. G. J. Feb. 24, 1958 [March 1, 1957], No. 5869/58. Class 52(2) The seat frame of a chair is constructed of vertical layers of veneer 1 . . . 4 adhesively united, the vertical edges of each layer abutting one another at staggered positions 5 . . . 8 and the seat has lumber blocks 9 with a hole 10 to secure the chair legs. The layers may be wound around a core to form a tube and then sliced to form the individual frames.
Patent GB-840948-A (GB)
Title: Improvements in and relating to inflatable life-rafts
IPC: B63C9/02
Filed: 1958-02-24
Abstract: 840,948. Inflatable craft. R. F. D. CO. Ltd., and EDWARDS, D. V. Feb. 19, 1959 [Feb. 24, 1958], No. 5887/58. Class 113. The canopy 13 of an inflatable life-raft is provided with two diametrically opposed entry sections having edges 15, 16, 17 and 18. The edges 15 and 16 are joined by a fabric gusset 19 which seals the slit formed by these edges when the sections are closed by the draw string 22 but allows the sections to be opened and secured in that position by the ties 21. An apron 23, joined to the inflatable wall 10 below the sections and to the canopy by gussets 26, is adapted. to be either rolled into the open position and secured by ties or to underlap the canopy sections and be secured by the anchorage 24. The canopy may be supported by any suitable means and may have a single or double skin. Specification 833,385 is referred to.
Patent GB-728908-A (GB)
Title: Improvements in or relating to reverse gears
IPC: F16H3/60
Filed: 1952-03-07
Abstract: 728,908. Reverse gearing; friction catches. LANGDON, A. G. March 4, 1953 [March 7, 1952], No. 5991/52. Class 80 (2). [Also in Group XXXIV] Planetary reverse gearing comprises a  shaft 2 and bevel sun gear 5 meshing rale gears 7 in a housing 3 which can be restrained from rotation for reverse drive by a brake band 23, the idle gears also meshing a sun gear 6 on a driven shaft 4, the gear train being locked solid for forward drive by a friction cone 11 moved axially to engage a co-operating surface in the housing when a sleeve 17 is slidden to pivot member 16 carring adjusting screws 18 acting as cams upon pins 14 which transmit the engaging force to a presser plate 12 axially free on the driven shaft and to a friction plate I (or plates) 18. The @ and clutch are alternately engaged by moving a hand @ shown, connected to and pivoting with a spindle 21 to rock a lever 20 and slide the sleeve 17 axially.
Patent GB-831994-A (GB)
Title: Improved polymers and process and catalyst for production thereof
IPC: C07C2/10
Filed: 1957-02-22
Abstract: An olefin polymerization catalyst comprises a mixture of an alkali metal chromate and at least one of the oxides silica, alumina, zirconia and thoria.  The alumina and/or silica may have been pretreated with hydrofluoric acid as in Specification 790,196.  The catalyst may be prepared by immersing the oxide in an alkali metal chromate solution so that the oxide absorbs some of the solution, recovering the oxide from the solution and activating the oxide by heating it in a stream of gas. Specifications 804,175, 809,784 and 814,295 also are referred to.ALSO:Olefins are polymerized using as catalyst an alkali metal chromate and at least one of the oxides silica, alumina, zirconia and thoria.  Specified olefins are ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 5-methyl-1-hexene, 2-butene, 2-methyl-2-pentene, ethylene-propylene mixtures, cyclohexene, vinylcyclohexane, and cyclopentadiene. Specified chromates are potassium, lithium and sodium chromates and dichromates.  The alumina and/or silica may have been pretreated with HF.  The polymerization may take place in an inert liquid hydrocarbon solvent such as iso-octane, n-decane, n-hexane, isopentane, cyclohexane and methylcyclohexane.  Specifications 790,196, 804,175, 809,784 and 814,295 are referred to.
Patent GB-212407-A (GB)
Title: Improvements in and relating to sectional containers for liquids
IPC: B65D21/08
Filed: 1923-03-02
Abstract: 212,407. Furness, W. March 2, 1923. Collapsable metal containers.-A collapsable metal container comprises a number of conical sections a, a<1>, a<2> fitting accurately together so that each forms a perfect continuation of the next, the lower edges of the sections fitting within a recess formed by pairs c, c<1>, c<2>, of bands on the upper edges of the sections beneath, the parts being further held together by w i r e - strainers or turnbuckles b. The base is constituted by a section d in the upstanding wall of which is a groove engaged by a projection on one of the bands c<2>, the joint being consolidated by a locking ring e disposed in the external groove made by the internal projection on the band c<2>. The upper sections may be rested in the section a<2>. In an alternative arrangement the container is held together by a tie-rod formed in sections and extending from top to bottom of the container.
Patent GB-345060-A (GB)
Title: Improvements in or relating to selectors particularly as used in automatic telephone systems
IPC: H01H67/12
Filed: 1930-02-24
Abstract: 345,060. Automatic exchange switches. TELEFONAKTIEBOLAGET L. M. ERICSSON, 33, Kungsgatan, Stockholm. Feb. 24, 1930, No. 6092. Convention date, Oct. 23, 1929. [Class 40 (iv).] In a system in which a selector arm moves into a bare wire multiple bank, the bank wires are evenly distributed on either side of the arm and are evenly spaced. The wipers may be disconnected whilst the switch moves from position to position. In the arrangement shown in Fig. 1 the three wires of a circuit are all on one side of the arm, the wires of consecutive circuits being on opposite sides and being staggered to prevent simultaneous connection with two circuits. The " c " wire is disconnected between setting positions by means of the spring set 19 .. 22. This spring set may be replaced by revolving wiper tips insulated from the wires in two of three positions and revolved by the wires as indicated in Fig. 7. Alternatively the wires of a circuit may be distributed two on one side and one on the other of the wiper arm, as shown in Fig. 4, the relative sides being reversed for consecutive sets. A four-wiper arm is provided and a threeposition spring set connects wipers 27, 28, 25 to the a, b, and c wires respectively in the first position, wipers 26, 25 and 28 in the second position and. disconnects all wires in the third position in which wires of different groups engage the wiper tips.
Patent GB-902301-A (GB)
Title: Improvements in or relating to centrifuges
IPC: B04B1/00
Filed: 1946-02-27
Abstract: 902,301. Centrifugal separators. GENERAL ELECTRIC CO. Ltd., and BOYLAND, D. A. March 14, 1947 [Feb. 27, 1946], No. 6126/46. Class 23. The rotor of a separator has a radial channel for discharge of the light fraction and communicating with the axial part of the main space within the rotor and with an exhaust chamber so that the light fraction is evacuated by a centrifugal pumping action. The rotor is suspended by a hollow shaft 16 from a turbine 17, and has a lower bearing 21. The radial channels are formed between rotor webs 31 and partitions 32, holes 37 communicating with the axial space of the rotor. The outer ends of the channels communicate through ducts 36 with a chamber 27 formed by a skirt 20 on the rotor and an annular fence 19 fixed in the casing. The light fraction is withdrawn from the chamber 27 through a duct 26. Light fraction leaking from the rotor is withdrawn through a duct 29 by a pump 30 which maintains the space between the casing and rotor at a vacuum. In a modification the radial channel is formed by a closed loop of flexible metal sheet. Specification 608,692 is referred to.
Patent GB-511962-A (GB)
Title: Improvements in or relating to fastening inserting machines
IPC: A43D75/00
Filed: 1938-02-28
Abstract: 511,962. Stapling. UNITED SHOE MACHINERY CORPORATION. Feb. 28, 1938, No. 6193. Convention date, March 1, 1937. [Class 89 (iii)] Relates to machines of the kind provided with a deflector in front of the nozzle for curving different portions of the legs of each staple successively, in the driving operation, before the portions enter the work, the deflector being adjustable so that the curvature imparted to the legs may be varied, and consists in means, controlled by the adjusting means of the deflector, for varying the effective stroke of the driver. Thus, adjustment of the deflector to impart a high degree of curvature to the legs is operative to shorten the effective stroke of the driver, so that staples may be only partially driven to act as temporary fastenings, for example, around the forepart of a lasted shoe. As described with reference to a machine of the character disclosed in Specifications 294,640, [Class 89 (iii)], and 419,672, the staple-inserting mechanism is carried by a slide 22 and comprises a driver 18 and a deflector 20. The driver is reciprocated by a slide 26 through a cam lever 30 which is pivoted on a stud 32 and carries a block 34 adjustably swivelled in the slide 26. The deflector 20 is adjustable to various positions by means of a handle 60 co-operating with locating notches 64, 78, 68, and is further adjustable through a frictional bearing and a lever 81. The lever 30 is mounted on an eccentric portion 84 of a sleeve 82 rotatable on the stud 32 and connected, by an arm 86, to a latch member 90. The latter has surfaces which can co-operate, respectively, with a stud 98 on the handle 60 and with a fixed pin 100. When the handle is moved to co-operate with the notch 64 so that a high degree of curvature is imparted to the staples the member 90 co-operates with the pin 100, as the slide 22 moves inwardly, to rock the sleeve 82 so as to retract the driver 18. In consequence, the driver finishes its operative stroke at a point at which the staple is only partially driven. When the handle 60 is moved to other positions of adjustment, the stud 98 raises the member 90 so that the pin 100 is ineffective to rock the sleeve 82. The initial position of the member 90 may be varied, for adjustment of the desired variation in the driver stroke, by means of a collar 102.
Patent GB-1504791-A (GB)
Title: Rotational speed transducer
IPC: G01P3/481
Filed: 1975-02-13
Abstract: 1504791 Measuring rotary speed POLYMOTOR ITALIANA SpA 13 Feb 1975 6198/75 Heading G1N An embodiment of an inductive wheel speed transducer uses extensions of the bearing races 1, 2 of a rolling contact bearing as retaining rings 11, 12 on which the rotor and stator respectively of the transducer are mounted. The rotor consists in an annular ferromagnetic body 5 carrying an annular multi-pole permanent magnet 6. The stator body 7 has an annular groove housing a winding 9 and supporting a toothed ferromagnetic disc 10. The function of the rotor and stator may be transposed. In an alternative embodiment Fig. 3 (not shown) there is provided an outer ring (12) with an extension (112) over the outer race of the bearing and which has a flange (212) carrying the stator body. The inner race (1) and the inner retaining ring of the rotor are clamped together by a bush (14). In a further embodiment Fig. 4 (not shown) the retaining rings (11, 12) for the rotor and stator are adhesively bonded to the inner and outer races respectively of the bearing.
Patent GB-830552-A (GB)
Title: Improvements in machines for manufacturing concrete slabs
IPC: B28B5/08
Filed: 1958-02-26
Abstract: 830,552. Rotary-table moulding machines. ERIKS LERVARUFABRIKER A. B., S. T. Feb. 26, 1958 [Feb. 27, 1957], No. 6211/58. Class 87(2). In a machine for moulding concrete slabs and similar cast masses comprising a mould table 7, Fig. 1, rotatable stepwise to convey moulds 5 to filling, pressing, and discharge stations A, B, C, the moulded slab being transferred at the station C onto as upporting metal disc 13 on a discharge conveyer 37, files of discs 13 are provided on a turntable 12 from which a disc is lifted, as by an hydraulically raised permanent magnet 37, Fig. 3, depending from a carriage 16 which is then moved hydraulically along horizontal guides 18 so that the disc may be lowered on to the conveyer 37. The cast slab is also transferred from the mould 5 to be conveyer 37 by vertical and horizontal movements, being lifted and lowered by an hydraulically actuated suction plate 35 depending from a carriage 27 movable hydraulically along horizontal guides 26. The slabs are pressed onto the station B by hydraulic or pneumatic means.
Patent GB-854486-A (GB)
Title: Improvements in and relating to drilling machines
IPC: B23Q11/00
Filed: 1957-02-25
Abstract: 854,486. Drilling-machines. ALLEMANN A.G., H. Feb. 25, 1957 [Feb. 25, 1956], No. 6320/57. Class 83 (3). A single or multi-spindle drilling-machine comprises a feed-stop 9 associated with the face of the work 16, such that the feed-motion is stopped when the drill &c. 2 has penetrated a predetermined distance beyond the face. The stop-sleeve 9 has an end-cap 12 with pins 11 to pass through a work-holding- and stripping-foot 17 and locate the work, and with a projection 13 to engage the face of the work and arrest movement of the sleeve relatively to the work. Further feed of the drill-supporting frame 5 or of the work-table 26 during cutting, slides the stopsleeve further over the spindle-sleeve 3, against the influence of a spring 10, until the feed is stopped by engagement between the stop-sleeve and a sleeve-nut 18 adjustable on the spindle sleeve 3 and locked by a nut 19. In the inoperative position, the stop-sleeve 6 is supported by the engagement of its flange 9<1> and a collar 14 supported from the frame 5 by a sleeve 24, which also slidably supports an insulating bush 21 carrying a contact 22 connected to an electric pulse-transmitter (not shown), which stops the feed if the work is incorrectly positioned. With the drill 2 adjacent the work and the latter correctly positioned in relation to a work-holder 25 and on the locating-pins 11, as shown, the contact 22 is not in engagement with the flange 9<1>. If the stop-sleeve 9 cannot descend to its proper position, however, due to cuttings lying on the work &c., the contact 22 is engaged by the flange 9<1> and transmits a pulse to stop the machine. Spindle-mountings.-The spindle-sleeve 3 is supported by a collar 7 on which bears a sleevenut 4 on the sleeve 3, the support permitting limited pivotal movement of the spindle assembly to facilitate engagement of the pins 11 in location-holes in the work. A grub-screw 29 secures the collar 7, which is prevented from rotating relatively to the sleeve 3 by a screw 30. A spring 6 forces the nut 4 against the collar 7.
Patent GB-878317-A (GB)
Title: Improvements in or relating to wheels and the tracks or tread bands of wheels
Inventor: WEISS KARL RUDOLF
IPC: B60B15/18
Filed: 1957-02-26
Abstract: 878,317. Vehicle wheels. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 1, 1958 [Feb, 26. 1957], No. 6473/57. Class 144 (1). A vehicle wheel comprises a peripheral series of tread shoes or plates 1 pivotally attached to the wheel 15 in such a manner that on forward rotation of the wheel, when the shoes or plates are subjected to the reactive forces of the ground, the trailing edge of each shoe or plate tends to be depressed relative to the leading edge thereof, the extent of the relative depression increasing directly in proportion to the ground softness. As shown in Figs. 1 and 3, each shoe comprises a flat sole plate 2 with a boss 3 towards its heel or trailing end to receive torsional rubber bearings 16 and a central.tapering web 9 apertured at 11 for attachment to a rubber ring 13. Each sole plate is faced with a centrally humped rubber tread 5 which extends around the heel into a recess 6 in a flat end face 4 of the shoe. The wheel of Fig. 1 functions only in the forward direction of rotation although the shoe faces 4 prevent undue ground penetration on reverse rotation. Fig. 6 shows an arrangement which provides for automatic shoe adjustment on forward or reverse wheel rotation. In this case the shoes 19 are pinned at 24 to a rubber ring 23 which is carried by the wheel disc 28, and the radially inner ends of the shoes are pinned to a concentric inner rubber ring 25 carried by the annulus 30 of an epicyclic gear. The sun wheel 31 of the gear is attached to the drive shaft of the wheel and the planet gears 32 are carried by the wheel disc 28. The wheel may have a rubber ring tyre surrounding the shoes 19. In a further arrangement the epicyclic gear may be replaced by a radiallyinnermost rubber ring carried by the driveshaft and pivotally linked to the inner rubber ring 25 by links which are centrally pivoted to the wheel disc.
Patent GB-900999-A (GB)
Title: Improvements in or relating to liquid pressure braking systems for vehicles
Inventor: CHOUINGS LESLIE CYRIL
IPC: B60T8/28
Filed: 1960-02-24
Abstract: 900,999. Fluid-pressure brakes. AUTOMOTIVE PRODUCTS CO. Ltd. Nov. 28, 1960 [Feb. 24, 1960], No. 6517/60. Class 103 (1). [Also in Group XXIX] In a liquid-pressure vehicle-braking system a rolling weight resting on an upwardly and forwardly inclined surface moves under predetermined deceleration forces to allow a resiliently seated valve to cut-off the supply of liquid to the brake motor cylinders. The valve 15 is connected in the liquid line to the rear brake cylinders and comprises a body 22 having a cylindrical stopped bore 23 containing a ball-shaped weight 36, the body being mounted on the vehicle in an inclined position with the stopped end 37 downwards. A port 25 opening radially into the bore 23 extends to a cavity 29 containing a valve member 31 having a disc-shaped head 32 and a stem 33 projecting into the bore 23. A spring 35 urges the disc 32 carrying a deformable sealing ring 34 to the port 25. The cavity 29 and bore 23, 29 are closed by screwed plugs adapted to receive liquid lines from the master cylinder and to the brake cylinders respectively. Under normal conditions the weight of the ball 36 acts against the stem 33 to hold the valve 31 off its seating and allow free flow of liquid. At a predetermined deceleration rate, the ball rolls up the inclined surface away from the stem 33 and the valve 31 shuts under spring 35 to prevent increase in pressure to the rear brakes. In a modification the flow of liquid through the valve is reversed. The valve may be used in systems having a pressure source other than a master cylinder, and may be used to limit pressure to all brakes. A plurality of valves may be used to act at different rates of deceleration to control the front and rear brakes.
Patent GB-805944-A (GB)
Title: Improvements in or relating to electric discharge devices having a gas filling and containing in addition water vapour
IPC: H01J17/26
Filed: 1956-03-01
Abstract: 805,944. TR switches. M-O VALVE CO. Ltd., and DUTT, T. L. May 28, 1957 [March 1, 1956] No. 6528/56. Class 39(1). An electric discharge device having a gas filling and containing in addition water vapour has disposed inside its envelope a compacted mass of metal filaments upon the surface of which a quantity of water has been adsorbed during manufacture of the device, said compacted mass of metal filaments being disposed external to any electric discharges path in the device. In the view shown of part of a TR switch, iron or steel wire is compacted into a hollow cylinder 1 which is held inside a cylindrical steel case 2 between a retainer 5 of fine steel gauze and a sealing plate 6 having a central hole accommodating a pumping boss 7. The case 2 is brazed to a further cylindrical steel case 8 containing a baffle 9 in the form of a stack of fine copper gauze discs and opening into a pumping stem 3 attached to the main body 4 of the TR switch. In manufacture, the switch is baked and processed in the normal way and dry hydrated nickel sulphate crystals are placed in a side tube (not shown) communicating with the interior of the switch. The entire system is then evacuated and prior to sealing is filled with krypton to a pressure of 3 mm. Hg. After a period of about one week the side tube containing the crystals is sealed off, the wire having adsorbed sufficient water on its surface to provide an equilibrium water vapour pressure of 0À2 mm. of mercury which remains substantially constant over a range of temperatures varying from 0‹C. to 100‹C. The baffle 9 allows water vapour to pass freely, but provides an extended surface on which metastable atoms may impinge and give up their excess energies before reaching the mass of metal filaments. The filling may comprise zenon in place of or in addition to krypton, and the Provisional Specification refers to a filling of argon at 4 mm. of mercury and to the use of strip metal for the metal filaments. The Specification refers to the prior use of metallic or glass granules, silica gel, and activated charcoal as a reservoir for water vapour.
Patent GB-173990-A (GB)
Title: Shipping package
IPC: B65D61/00
Filed: 1921-03-01
Abstract: 173,990. Cary, S. C. March 1, 1921. Seals. - The overlapping ends e of flat metal straps E used as binders on a packing-case are secured by passing them through a flat metal plate G, and then applying nressure to the plate to interlock the lapped ends and the loop.
Patent GB-734880-A (GB)
Title: Improvements in document filing systems and devices
IPC: B42F15/00
Filed: 1953-03-12
Abstract: 734,880. Filing papers; tabs. KARDEX AKT.-GES. FUR BUROARTIKEL. March 12, 1953 [March 13, 1952]. No. 6886/53. Classes 16 and 146(1). In a suspension filing system, guide cards, folders or the like are provided with a holding strip of resilient material at the upper edge, folded thereover immediately above a suspension bar, the strip being open from its underside for its whole length to grip an index card or strip inserted in an upward direction and extending below the lower edge of the strip. As shown, a folder 1, 2 with suspension rails 3, 4 has one side 2 extended at 5 above the rail 4.to carry a resilient holding strip 6 connected thereto only on the rear side. A card 8 is slid below the strip 6 and its lower ends may be positioned by cross slits 12, 13. Marking tabs 10, 11 may also be slid under the holding strip 6. If desired, the card 8 and/or the tabs 10, 11 may have a rearwardly bent fold at the top to engage the extension 5. The cover side 2 may be formed with a flap at its extension 5, which may be joined to the side 2 to form the guide for the rail 4 and the flap may have slips 12, 13 to anchor an indicating strip slid below the holding strip 6. The strip 6 need not extend the full width of the folder.