baber/WOPTO huggingface dataset:
Patent GB-735390-A (GB)
Title: Reforming catalysts
IPC: B01J23/42
Filed: 1953-05-14
Abstract: A catalyst suitable for reforming hydrocarbons comprises alumina and a platinum metal, the alumina having been derived from a material in which alumina trihydrate predominates.  In preparing the catalyst, an alumina hydrogel is precipitated by adding ammonium hydroxide to a solution of aluminium chloride, aluminium sulphate, or sodium aluminate, the gel is washed and is then converted to a form in which alumina trihydrate predominates, by ageing at a pH of 8-10 for several days, or by seeding with crystallites of gibbsite; the progress of the transition may be followed by X-ray diffraction analysis of a dried sample.  The trihydrate, as gibbsite, bayerite, or an intermediate crystalline form, preferably constitutes about 65-90 per cent of the total alumina hydrate; from 5-35 per cent of alumina monohydrate may be present.  The preferred platinum metals are platinum, palladium, rhodium and iridium; ruthenium and osmium are less suitable.  An acidic promoter, e.g. a fluoride, chloride, sulphate, or phosphate, or silica, zirconia, boria, molybdena, or chromia may be added either before or after the incorporation of the platinum metal.  An aqueous solution of chloroplatinic acid may be added to a slurry of the alumina hydrate, followed by aqueous hydrogen sulphide solution; alternatively a platinum sulphide solution may be used.  The resulting slurry is dried rapidly at a pH of 6-9, formed into tablets or pills, with the addition of a die lubricant, and then calcined in an oxygen-containing gas at 750-1200 DEG  F.  Before use the catalyst is reduced by heating in a stream of hydrogen.  Preferably the catalysts contain 0.1-1 per cent by weight of platinum metal and 0.2-1.5 per cent by weight of fluoride, added as ammonium fluoride or hydrogen fluoride.  The catalysts prepared according to the invention have pores of a larger volume than catalysts prepared from alumina monohydrate, and have a longer life before regeneration is necessary.  Tests are described for determining the crystal form of alumina hydrates by X-ray diffraction, and the surface area and pore volume distribution for various catalysts are given.  Processes are described in which the catalysts are used in reforming naphthas and naphtha fractions for the production of high octane gasoline, benzene, toluene, and xylene. Reforming is carried out in the presence of hydrogen under the usual conditions, with the catalyst as a fixed bed or in the fluidized state.
Patent GB-499105-A (GB)
Title: Improvements in freezing trays
IPC: F25C1/24
Filed: 1938-05-06
Abstract: 499,105. Ice - making. GENERAL MOTORS CORPORATION. May 6, 1938, No. 13555. Convention date, May 10, 1937. [Class 29] A removable grid for a domestic freezing tray comprises a rubber or like elastic longitudinal wall 11 having vertical slots 12 through which are threaded metal transverse plates 15 having notches 16 to lock them in position. The grid may be distorted in any direction to release ice blocks therefrom after the whole has been removed from the tray.
Patent GB-760625-A (GB)
Title: Improvements in or relating to ophthalmic mountings
IPC: G02C1/04
Filed: 1954-05-10
Abstract: 760,625. Spectacles. JAMESON, Ltd., W. and JAMESON, W. May 9, 1955 [May 10, 1954], No. 13583/54. Class 97(1) In an ophthalmic mounting wherein the lenses 14 are secured to the associated fittings by securing members passing through holes in the lenses and holes in the httings, the securing members comprise pin members 16 composed of soft tough plastic material such as nylon, each pin member having its ends integral or attached enlargement's between which the lens and fitting are gripped. The pin members may have preformed heads 17. After insertion the rear ends may be spread by heat and/or pressure to form heads 18. Alternatively collars may be shrunk on to the rear ends of pins 16, and the collars may have ribs or projections to bite into the pins.
Patent GB-167605-A (GB)
Title: Improvements in railway carriage doors
IPC: B61D19/02
Filed: 1920-08-10
Abstract: 167,605. Gaskell, H. V., and Whiteley, F. Aug. 10, 1920. Doors for passenger vehicles.- Finger-guards for the doors A of railway and like vehicles consist of resilient pads or strips of rubber D with corrugated faces applied to the meeting edges of the door and frame.
Patent GB-326084-A (GB)
Title: Improvements relating to slicing machines
IPC: B26D7/32
Filed: 1929-05-02
Abstract: 326,084. Berkel & Parnall's Slicing Machine Manufacturing Co., Ltd., and Thomas, H. May 2, 1929, Cutting slices in succession.-In a machine for slicing bread, cake and like substances, a slice support is arranged to slide in a slice receiver having a side wall, or side walls, and is provided with means for frictionally engaging the wall, or one or both of the walls, so as to impose a drag upon the support during its movement. As shown in Fig. 1, the slice supporting member 5 is slidable in a trough-shaped slice receiver 6, and a spring-pressed pin 8 is slidable in a bracket on the base of the member 5 and carries a pad which is pressed by the spring against the inner face of one of the flanges 6<a> of the receiver 6. The pressure of the pad may be varied by a screw adjustment and the pad may be withdrawn from the flange 6a by a fingermember 13. A hole 7<a> is formed in the flange 6<a> and the pad passing into the hole prevents the member 5 from being pushed out of the trough. The hinged door 15 which guards the operator from the knife rests and slides over the curved central longitudinal rib 5<b> of the member 5. The face of the member 5 is cut away in skeleton form to facilitate removal of the slices therefrom. In a modification, the substantially vertical slice-supporting plate is carried on a triangular plate-like bracket which projects over and slides along the top of one flange of the trough-shaped receiver. 'The flange is positioned between two downturned portions of the bracket and the outer portion carries a screw for exerting an adjustable pressure on a leaf-spring bearing on the outside face of the flange. The movements of the slice-support are thus opposed by a frictional drag. The slicesupporting plate may be hinged to its bracket so that it may be swung completely out of the trough. In a further modification, Fig. 8, the central web 45 of the slice support 40 has a recess 44 within which is fulcrumed a pair of levers 43 carrying pads 42 which bear against the flanges of the trough shaped slice receiver 41. The levers 43 are provided with partly closed casings 48 within which is disposed a spring 49 which presses the pads 42 againt the flanges. The compresion of the spring is adjusted by a collar 50 longitudinally adjustable on the pin 51 on which the spring 49 is threaded, by a screw actuated by a milled knob 53. The levers 43 preferably each consist of two superposed bars and are arranged so that one bar of one lever passes between the two bars of the other.
Patent GB-170319-A (GB)
Title: Fourdinier type of paper making machines
IPC: D21F1/50
Filed: 1920-05-18
Abstract: 170,319. Hamel, J. O., and McLaughlin, J. E. May 18, 1920. Suction apparatus. -A suction box for a Fourdrinier machine comprises rollers 1, water-sealing end pieces 6, and packing-pieces 9 pressed against the rollers by springs 11. The rollers 1 are adjustable laterally towards the end pieces 6 by screws, and the tops of the end pieces are recessed as shown at 19 and provided with slots 18, Fig. 8, connected by slots 29 with the suction chamber. Sealing-straps 27 running over rollers 26 are sucked down and effectively prevent air from leaking in at the edges of the wire cloth 28, which is thus pressed down on a narrow strap 33 running beneath the wire cloth in grooves 16<1> in the end pieces 6. Springs 30 press the sealing- straps 27 in the recesses 19.
Patent GB-791418-A (GB)
Title: Improvements in or relating to filters
IPC: B01D33/00
Filed: 1956-05-03
Abstract: 791,418. Travelling bend filters. EIMCO CORPORATION. May 3, 1956 [June 29, 1955], No. 13693/56. Class 46. A filter comprises an endless filter medium 28, Fig. 1, extending over a rotary drum and carries filter cake formed in passing over the drum to a discharge roller 30. The filter medium passes over a washing roller 32 and roller 34 which is adjustable to vary the tension in the filter medium. At least one of the rollers 30, 32, 34 is self-aligning being responsive to lateral movement of the filter medium to maintain the medium centred on the drum 10. This roller comprises a shaft 52, Fig. 2, supported in bearings 54. The roller is formed as two separate cylinder parts 68 having bearing blocks 64 with curved inner surfaces, trays 62 fixed to the blocks 64 fit key-ways in hub portions 58, fixed to the shaft 52, and provide relative rotative movement between the shaft and the cylinder parts 68. The inner ends of the cylinders 68 are located in alignment with one another by positioning member 70. The cylinders are thus mounted for limited rocking and longitudinal movement relative to shaft 52 and the force exerted by the filter medium 28 passing over the rollers corrects any lateral movement of the filter medium. This type of roller is not restricted to rotary filters but may be used to centralise the filter medium in other types of filters having a moving endless filter medium. In a modification a non-yielding surface roller is mounted in a support pivoted about an axis normal to the axis of the roller so that the roller is angularly displaced bodily should the filter medium creep towards one or the other lateral edge of the roller whereby the filter medium would return to its normal centred position. In a further modification the roller is mounted in resiliently displaceable bearing blocks so that the roller is tiltable to an askew position by movement of the filter medium off centre, to return the medium to its centered position.
Patent GB-452108-A (GB)
Title: Improvements in and relating to switch frog operating gear for overhead electric conductors
IPC: B60M1/14
Filed: 1936-05-15
Abstract: 452,108. Operating switches of overhead electric conductors. SKERRITT, E. M., and WATSON, T. M., Naranka Works, Orange Street, Sheffield, and BENNETT, S. C., 14, Glendare Road, Lidget Green, Bradford. May 15, 1936, No. 13245. [Class 104 (iii)] To ensure equal movement of a pair of connected frog switches, the switch levers 2 are pivotally connected by parallel links 3 to a floating lever 4 connected at its free end 6 by a cable &c. 7 to the actuating means. The distance between the two pivots 5 is equal to or less than the distance between the point 6 and the nearer pivot.
Patent GB-1148861-A (GB)
Title: Multi-way selector valves
Inventor: RUE RAYMOND WILLIAM
IPC: F16K11/074
Filed: 1966-03-29
Abstract: 1,148,861. Valves. ENGLISH ELECTRIC CO. Ltd. 28 March, 1967 [29 March, 1966], No. 13839/66. Heading F2V. A multi-way selector valve includes a first cylindrical housing part 10 having formed in it twenty-five radially extending and circumferentially spaced inlet ports 16 and one outlet port 13 of similar configuration, selective communication between the outlet and one of the inlets being established by means of a rotor 20 enclosed by a second housing part 11 and having formed in it a single radial passageway 26 connected at its extremities to axial passages 28, 29 for communication with an axial outlet extension 14 and with an axial inlet extension 17 respectively. Around the periphery of the rotor, and on the side furthest from the housing 10, are positioned equally spaced pins 40 individually engageable by a slide member 41 which serves to move port 29 from one inlet extension 17 to the next, the slide member having two opposed teeth 48, 49 each having an inclined face (50, Fig. 3, not shown), the width of each tooth being such that it can just slide radially between two adjacent pins on the rotor. Longitudinal movement of member 41 to the right as by application of pressure to port 51, results in tooth 49 engaging a pin and moving it, and hence the rotor, through half the arc between adjacent inlet port extensions, whilst reverse movement of the slide member, as by application of suction to port 51, results in tooth 48 engaging the same pin and completing the arc. In each of the inlet passage extensions and in the outlet extension there are disposed graphite sleeves 30 spring-biased against the rotor (Fig. 4, not shown) with a further, solid, graphite member 35 being disposed in the housing 10 for sealing port 29 when the latter is rotated to a position in which the passage 26 is parallel with the outlet 13. An end cap carries two electrical contacts 56 and 57, the first being engageable by a second contact 58 carried on its slide member 41 each time this member is caused to move to the right, and the second being engageable by a third contact 59 upon port 29 engaging member 35, both engagements being monitored by electrical valve position indicating means. Each inlet 16 is connected to the outlet of one of a number of primary selector valves (not shown) of a burst-cartridge detection system of a nuclear reactor and the outlet 13 is connected to an ionization chamber unit (not shown).
Patent GB-270500-A (GB)
Title: Improvements in or relating to garment racks for wardrobes
IPC: A47B61/02
Filed: 1926-06-01
Abstract: 270,500. Beesley, H. June 1, 1926. Garment racks.-An extensible garment hanger for wardrobes consists of a flat guida bar a, secured to the top of wardrobe by brackets b, c, and a slidable element formed by bending a length of rod d to form upper and lower parallel bars connected at their free ends by a strip e which slides on the bar a. The upper bar of the sliding element passes through a guide g formed integrally with the bracket c. A stop f limits the outward movement of the sliding element. Specification 28946/13 is referred to.
Patent GB-816066-A (GB)
Title: Improvements relating to t-junction standing wave indicator
Inventor: HOPFER SAMUEL
IPC: G01R27/06
Filed: 1956-05-04
Abstract: 816,066. Impedance networks. POLYTECHNIC RESEARCH & DEVELOPMENT CO. Inc. May 4, 1956, No. 13902/56. Class 40 (8). A standing-wave indicator comprises a threearm coaxial line junction whose arms are equally coupled to a circular-section side arm containing a pick-up element, the circular arm being dimensioned below cut-off. The aligned arms 3a, 3b of the junction are connected respectively to a variable condenser structure 7 and to a socket 6a by which a suitable load is connected to the indicator. The third arm 4 constitutes the generator arm and is provided with an inner conductor of reduced dimensions compared with the other arms in order to obtain equal coupling to the pick-up arm. The condenser structure 7 is contained within a dielectric housing and comprises fixed and movable plates 7a, 7b, the movable plates 7b forming part of a detachable structure 8 containing driving means for the plates. Both sets of condenser plates may be in the form of concentric cylinders which may be relatively moved into interleaving relation with each other. Different ranges of value for the capacitor structure may be obtained by changing the structure 8. The pick-up arm is formed as a cylindrical bore 12b within a block 12 mounted for vertical adjustment within a cap 10. The cap 10 and block 12 are mounted for rotation about a vertical axis by bearings 11a, 11b. The bore 12b is prolonged by a skirt 13 which makes conductive contact with the walls of the coaxial junction through a slotted resilient annulus 14 of beryllium copper. This annulus prevents loss of energy through the gap which exists between the skirt 13 and the walls of the junction. The pick-up consists of a diametrically arranged bar 15 whose right-hand end engages a contact-ring 16 connected to a co-axial cable socket (not shown). The left-hand end of the bar 15 is connected to a removable detector 19 housed within a bore in the block 12. High-frequency currents are by-passed to earth by means of a capacitor structure formed of a conducting plate 22 connected to the bar 15 and insulated from the block 12 by a layer of dielectric material 23. Energy reaching the pick-up bar 15 is in the TE 11  mode, other modes being suppressed by a grid of conductive strips 21. In the diagram of Fig. 4, the line 25 indicates the field distribution in the vicinity of the bar 15. Where the arm 3a is terminated in a capacitive reactance of a normalized value of unity, the ratio of the voltage maximum to the minimum is equal to the VSWR of the load. The angle 27 between the position of voltage minimum and the 45 degrees reference line 26 is equal to one-half the phase angle of the load reflection co-efficient.
Patent GB-915126-A (GB)
Title: Improvements relating to tightening devices for pit-prop locks
IPC: E21D15/58
Filed: 1959-04-23
Abstract: 915,126. Erecting mine-roof supports. GUTEHOFFNUNGSHUTTE STERKRADE A.G. April 23, 1959 [April 23, 1958], No. 13914/59. Class 20 (2). [Also in Group XXII] A removable, preferably hydraulic, device for uniformly tightening telescopic pit-prop clamps has a ram 8 which presses apart a pair of arms 5 (only one is shown) while a simultaneouslyoperated ram 27 forces in a wedge 10 by means of the lever 11. Both rams are subject to the same hydraulic pressure provided by a pump ram 22 via a delivery valve 25, inlet ports 24 communicating with a reservoir 23 in which a variable air space is maintained by a bladder 36. Automatic means release the hydraulic pressure when a predetermined pressure has been attained, ensuring uniform clamping of successive clamps with uniform wedge-driving forces. In Fig. 4, the pump is driven by a torque wrench forming the pump handle 7. When limiting torque is exceeded, ratchet teeth 31, 32 force the member 32 to the right, a pin 33 operating a release valve 34. In Fig. 6, a limit valve 37 opens under excess pressure and delivers a triggering pulse to the hydraulic relay 39, 40, 41 to release the pressure.
Patent GB-954197-A (GB)
Title: Recovery of tertiary olefins
IPC: C07C7/148
Filed: 1960-04-21
Abstract: Primary-tertiary ethers, are obtained in the separation of C4-C7 tertiary from other monoolefins by reacting the tertiary olefin with a C1-C6 primary alcohol. The reaction is effected at 100-350 DEG F., and 0-5,000 p.s.i.g. in the liquid phase with an alcohol to tertiary olefin mol ratio of 0.1-100 using as catalyst an anion exchange resin. The tertiary olefin may be isobutylene, an isoamylene, isohexylene, isoheptene or 1-methyl-cyclopentene. The alcohol may be mono-or polyhydric and in preferably methanol or ethanol. The catalyst may contain sulphonic acid groups on a resin such as phenol-formaldelyde, coumarone-indene-cyclopentadiene, coumarone-indene-furfural, cyclopentadiene-furfural, coumarone-indene-cyclopentadiene-furfural or styrene-divinyl-benzene or on coal.  In batch processes 0.5-50% by wt. of catalysts based on reactants is used and in continuous processes a WHSV of 0.1-100 based on hydrocarbon feed is used.ALSO:Tertiary olefins of 4-7 carbon atoms are separated from other close-boiling hydrocarbons by selectively reacting the tertiary olefins with a C1-C6 primary alcohol to form the corresponding ether, separating unreacted hydrocarbons and decomposing the ether to recover the olefins by contact with a solid phosphoric acid catalyst or a solid polystyrene sulphonic acid resin catalyst at 100-400 DEG  F. Tertiary olefins which may be separated are isobutylene, isoamylenes, isohexylenes, isoheptenes and cyclic olefins such as 1-methyl-cyclopentene. The alcohol may be mono- or poly-hydric, is preferably methanol or ethanol and is employed in a mol ratio to tertiary olefin of 0.1-100, preferably 1-10.  The temperature may be 100-350 DEG  F. and pressure 0-5000 p.s.i.g., liquid phase being maintained. The catalyst used to form the ether is an organic hydrogen ion exchange resin bearing SO3H functional groups based on coal or polymers such as phenol-formaldehyde, coumarone - indene - cyclopentadiene, coumarone-indene - furfural, coumarone - indene - cyclopentadiene - furfural, cyclopentadiene - furfural or styrene - divinyl benzene.  In batch processes 0.5-50% by weight of the reactants of catalyst is used and in continuous processes a WHSV of 0.1-100 based on hydrocarbon feed is used.  Separation of excess alcohol from the ether is not necessary, an ether-alcohol azeotrope separated by distillation may be passed to the decomposition.  The pressure may be 1/25 -25 atmospheres and the amount of catalyst may be 1-25% by weight of ether in batch processes or a WHSV of 0.5-10 may be used in continuous processes.
Patent GB-153343-A (GB)
Title: Improvements in or relating to the manufacture of rubber
IPC: C08K3/34
Filed: 1919-06-02
Abstract: The product obtained by treating china or other clay with water and a deflocculating agent such as sodium carbonate or ammonia, is dried while in a deflocculated state, and used for admixture with rubber. Specifications 106,890 and 121,191, [both in Class 87 (i), Bricks &c.], are referred to.
Patent GB-1493626-A (GB)
Title: Towel delivery device
IPC: A47K10/30
Filed: 1975-02-27
Abstract: 1493626 Towel-dispensers G E R BROWN and M G PEGG 27 Feb 1975 [29 March 1974] 13999/74 Heading B8M A towel delivery device comprises means for mounting a continuous loop of towel 10 partially within and partially outside a housing 1 for cyclic movement through the housing effected by pulling that portion of towel lying outside the housing and means within the housing for cleaning the towel as it passes therethrough, the cleaning means including washing, rinsing and drying compartments located within the housing, the towel running through each of those compartments in turn. As shown, the housing 1 comprises compartments 3, 4, 5, 6 for washing, rinsing, drying and storing, respectively, the towel 10 which passes out of the housing 1 between rollers 14, 15 and re-enters via a roller 16. When the user pulls the towel 10 downwards at position A, a corresponding length is pulled through the rollers 14, 15 which have a ratchet device to prevent jockey rollers 12, 13 in the compartment 6 pulling the towel back into the housing 1. The rollers 12, 13 are raised and a microswitch 17 is closed to drive pressure rollers 18, 19 to draw soiled towel into the compartment 3 at a constant rate. The compartment 3 contains hot water and a cleaning agent, the water being kept hot by a thermostatically controlled heater and agitated by a motor-driven impeller. The towel which was in the compartment 3 is drawn through pressure rollers 21, 22 into the compartment 4, containing clean water, and the rinsed towel passes into the compartment 5 containing a hot air blower 24. When sufficient dry towel has passed into the compartment 6 to enable the rollers 12, 13 to open the microswitch 17.