baber/WOPTO huggingface dataset:
Patent GB-990883-A (GB)
Title: Improvements in or relating to the purification of epoxy compounds
Filed: 1962-07-11
Abstract: Organic epoxy compounds containing acidic impurities formed during an epoxidation reaction, which impurities promote discoloration of the epoxide on heating, are purified by contacting a solution of the epoxy compound in a hydrocarbon immiscible with water at a temperature of 20 DEG  to 100 DEG  C. with a solution of an alkali metal hydroxide dissolved in a homgeneous mixture of water and an aliphatic alcohol containing up to 6 carbon atoms, the said mixture containing 40 to 60% by weight of water, and the amount of alkali metal hydroxide being in excess of that theoretically required to neutralize all the acidic impurities in the epoxy compound but insufficient to react with the organic epoxy compound under the process conditions, the contacting being continued until at least 50% by weight of the colour-forming impurities have been removed. The process is especially suitable for purifying epoxides prepared by the process of Specification 933,697.  Several suitable hydrocarbon solvents and alcohols are specified.  Several suitable types of epoxy compound are specified. Examples describe the purification of epoxidized soybean oil.
Patent GB-920327-A (GB)
Title: Improvements in or relating to tyre valve connectors
Inventor: WALTERS DEREK JOHN
IPC: F16L29/00
Filed: 1958-08-19
Abstract: 920,327. Tyre valve connectors. WALTERS & DOBSON Ltd. Aug. 18, 1959 [Aug. 19, 1958], No. 26694/58. Addition to 872,246. Class 99(1). The tyre valve connector of the parent Specification is modified by providing a valveunseating pin 11 separate from the camactuated slidable unit 5 and axially-movable relative thereto against the force of a spring 16 for unseating a tyre valve member 17, the end portion of the pin remote from its valve unseating end extending through a detachable and co-axial gauge receiving nipple 10 and being adapted to act as a spring-pressed valve member for the nipple. The pin 11 is provided with a collar 14 supporting a packing ring 19 which seals the apertured end of the nipple 10 when a tyre is being inflated by pressure fluid introduced through a hose nipple 6. The unit 5 is formed with a recess 7a which provides a stop for the tyre valve stem 18 to keep the pin 11 clear of the valve member 17 until the pin is actuated by the gauge 13 for testing the tyre pressure. The distance between the end of the pin and the valve member is such that interior of the nipple 10 is opened to the gauge prior to the valve member being unseated by the pin 11.
Patent GB-171559-A (GB)
Title: Additional door securing device operated automatically by the ordinary bolts or latches
IPC: E05C21/00
Filed: 1920-09-20
Abstract: 171,559. Drake, G. C. Sept. 20, 1920. Multiple fastenings for doors; turn-button fasteners; striking-plates and staples for locks and latches.-In an additional security device for doors, the lock bolt or latch, when shot, strikes the end G of a spring-pressed lever pivoted at M on the inside of the door jamb, the upturned end H of the lever rotating the pivoted arm C across the face of the door. The device, applied with a mortise lock, is shown in the operative position. When out of action the arm C hangs downwards. To operate the device, the door being open, the arm is turned up to the dotted line P and the door closed and locked from the outside. The bolt R being shot strikes the inturned end G of the lever, the end H pressing against the shoulder E in the recess D in the arm and causing the latter to fall by its own weight across the door, the arm being held in this position by engagement of the end H of the lever with the shoulder F on the arm. When the bolt is withdrawn, the lever is returned by its spring to its original position, the end H sliding off the shoulder F and allowing the arm to fall by its own weight into its original vertical position. To reduce play between the arm and the door, the lower part of the lever is bent slightly towards the door jamb and operates in a recess in the attaching-plate. When applied with a spring latch, the part V of the lever passes up through a slot in the bottom of the box staple, the end G being turned outwards away from the door jamb.
Patent GB-1168188-A (GB)
Title: Closure Means for Resilient Vessels
IPC: B65D51/00
Filed: 1968-06-05
Abstract: 1,168,188. Stoppers. BOEHRINGER MANNHEIM G.m.b.H. 5 June, 1968 [9 June, 1967], No. 26800/68. Heading B8T. A substantially rigid plug stopper for resilient containers comprises a sealing surface provided with annular ribs 1, an opening 2 for a hypodermic needle and a screw thread 3. The ribs 1 may be of triangular cross-section.
Patent GB-859344-A (GB)
Title: Production of calcium borates
Inventor: BALL GEOFFREY ROBERT
IPC: C01B35/10
Filed: 1958-08-20
Abstract: Crystalline calcium metaborate tetra- or hexahydrate is produced by reacting borax, an alkali-metal hydroxide, calcium hydroxide or oxide and a calcium salt, particularly the sulphate or chloride or mixtures thereof, in an aqueous medium and removing the hydrated calcium metaborate so obtained.  The reaction may be effected at 0 to 100 DEG C. and the pH is preferably 11 or higher. The reaction mixture may be seeded with the metaborate hydrate required and tetrahydrate production is facilitated by employing a reaction temperature above 40 DEG C.  The molar ratio of calcium hydroxide or oxide to the calcium salt employed should be about 1. In a cyclic process an alkali-metal metaborate is first formed from borax and alkali-metal hydroxide and then calcium hydroxide or oxide, the calcium salt and borax added to the system; periodically the hydrated calcium metaborate is crystallized, followed by crystallization and separation of the alkali metal salts formed.  According to a typical example, a solution of borax and sodium hydroxide in water at 55 DEG C. was added to a slurry of calcium hydroxide containing calcium sulphate.  On stirring a minor amount of calcium metaborate tetrahydrate was added as seed and the mixture maintained at 50 DEG C.  Crystalline metaborate p  reaction product was removed by filtration.  Sodium sulphate could be crystallized from the mother liquor by cooling to 20 DEG C.
Patent GB-972602-A (GB)
Title: Latex of cis 1,4-polyisoprene and vulcanized foam manufactured therefrom
IPC: C08J9/30
Filed: 1962-07-12
Abstract: A latex of cis 1, 4-polyisoprene, produced by solution polymerization, has a cis 1, 4 content of at least 85% e.g. up to 97%, an intrinsic viscosity in toluene at 25 DEG C. of 1.0-10.0 and is free of branching and gel prior to emulsification, the latex has a solids content of 60-70%, contains 0.5-2% of emulsifying agent and has a crosslink density of 0.02 x 10-4-0.1 x 10-4 moles/c.c The emulsifying agent may be a soap of a rosin or fatty acid, amine or quaternary ammonium salts, phosphoric esters, esters of oleic acid or pentaerythritol, or sorbiton mono-oleate. The latex may be produced by emulsifying a hydrocarbon e.g. hexane solution of the polyisoprene, e.g. 10-20% in the presence of water and emulsifying agent, separating the hydrocarbon solvent, concentrating the resultant latex by removing water, adjusting the concentration of the emulsifier, adding to the latex 0.25-0.75% of a sulphur containing vulcanizing agent, e.g. sulphur, and 0.5-1.0% of a vulcanizing agent accelerator, e.g. zinc diethyldithiocarbamate, and vulcanizing the latex at above 40 DEG C.  A vulcanized foam is prepared from the latex which contains 1.0-5.0% wax, of m.p. below 100 DEG C., by blending the latex with 1.5-2.5% of a sulphur containing vulcanizing agent, 1.5-2.5% vulcanizing accelerator, 0.20-0.60% thickener e.g. methyl cellulose, 0.5-1.0% foam stabilizer, frothing this blend and adding 3.0-7.0% zinc oxide, sufficient gelling agent, e.g. sodium silicofluoride and potassium hydroxide, to effect gelation in less than 10 min. at 20 DEG C. and vulcanizing the froth to a crosslink density of 1.0 x10-4-1.5 x 10-4 moles/c.c.  The latex may contain a stabilizer e.g. an alkylated phenol and the foam may contain a mixture of lecithin and triethanolamine. Dipped goods may be made from the latex. Specification 893,066 is referred to.
Patent GB-1164197-A (GB)
Title: Means for Controlling the Feeding of Overlapping Sheets to a Sheet Separating Device
Inventor: SPIESS HELMUT
IPC: B65H1/22
Filed: 1967-06-12
Abstract: 1,164,197. Controlling sheet-feed. H. SPIESS. 12 June, 1967 [10 June, 1966], No. 26964/67. Heading B8R. A device for feeding and separating sheets arranged in overlapping fashion incorporates a sensing lever positioned at the separating station which regulates the drive speed of the sheet-feeding mechanism in accordance with movement of the lever under the action of the sheets. Fig. 1 illustrates a mechanism in which sheets 1 are disposed in staggered fashion on conveyer belts 2 and are carried around a drum 3 to further conveyer belts 5, the belts 4 guiding the sheets around the drum. At the end of belts 5, a feed plate 7 guides the sheets to a suction cylinder 6 which separates the sheets. The drive mechanism for drum 3 and belts 2 and 5 is provided by worm gears 17 and 18 carried on a shaft 16 of hydraulic motor 15; the free end of a sensing lever 9, pivoted at 8, is acted on by the sheets and regulates the motor 15 through piston 10, valve 11, reservoir 13, gear pump 12, and conduits 14, 19 for the fluid medium. In Figs. 2, 3 and 4 (not shown), the absence of a sheet at plate 7 allows the lever 9 to move under spring bias to open valve 11 and accelerate the sheet feed through motor 15, drum 3 and belts 2 and 5; if the flow of sheets becomes too great, the lever is forced against the spring to close valve 11 and decelerate the motor.
Patent GB-1129317-A (GB)
Title: Improvements in telescopic umbrellas
Inventor: WEBER HEINZ
IPC: A45B19/00
Filed: 1966-06-16
Abstract: 1,129,317. Telescopic umbrella. BREMSHEY & CO. K.G. 16 June, 1966, No. 26971/66. Heading A4P. An umbrella having telescopic shaft and ribs is provided with a system of stays in which each stay extends underneath the fabric canopy parallel to a rib, the inner end of the stay being near the inner end of the rib and the length of the stay being such that when the umbrella shaft is fully extended the stay reaches from the upper end of the shaft approximately halfway to the inner end of the outer spoke part. Preferably each stay is a length of spring wire bent into a U-shape with the free ends of the arms clamped to the shaft near its top in such a manner that when the umbrella is closed the stays tend to spread outwards away from the shaft and towards the ribs. All the stays may be part of a single wire. The stays are preferably attached to the fabric canopy, and may be inserted into the double seams formed by sewing the canopy together from sectorshaped strips of fabric.
Patent GB-704487-A (GB)
Title: Improvements in or relating to magnetically loaded high frequency transmission lines
Inventor: PRACHE MARIE PIERRE
IPC: H01B11/14
Filed: 1951-11-16
Abstract: 704,487. Loaded cables. LIGNES TELEGRAPHIQUES ET TELEPHONIQUES. Nov. 16, 1951 [May 23, 1951], No. 26999/51. Class 36 A high-frequency transmission line comprises a plurality of conductors, at least one of which has a cross section of which the length is at least twice the width and is partly surrounded by separated thin magnetic shells made of a ferrite which lie very near to the conductor where the periphery of the cross section has a maximum curvature and are more remote from the conductor near the points where they are separated by a dielectric gap. A balanced screen line may comprise conductors 1, Fig. 1, having an elongated cross sectional shape as shown, each surrounded by magnetic shells 2 of semi-circular cross section which are separated from each other, the conductors 1 and screen 3 by dielectric 4. Flat strip conductors may be used, the magnetic shells then being of V-shaped cross section. A coaxial line, Fig. 4, may comprise a flat strip inner conductor 11 and magnetic shells 12 of V-shaped cross section separated from the inner conductor 11, the outer conductor 13 and each other by dielectric 4.
Patent GB-1036197-A (GB)
Title: Electrical assembly
IPC: H01R4/10
Filed: 1964-06-30
Abstract: 1,036,197. Indicator lamps. UNITEDCARR Inc. June 30, 1964 [Aug. 20, 1963], No. 27054/64. Heading F4R. [Also in Division H2] The terminal leads 14 of a neon indicator lamp 12 are wedged in bores in a closed end portion 28 of a tubular housing 10, made from a resilient insulating material such as nylon, by contacts 16 each comprising a cylindrical portion 40 with a truncated cone head portion 38, a shoulder portion 44, and a blade contact 42, the portions 38 and 44 serving to retain the contacts 16 when they are forced into the apertures in the end 28 of the lamp housing. Extensions 26 and 32 of the housing end portion 28 separate the two terminal leads and the two contacts respectively. In a modification (Figs. 4 and 6, not shown) each contact 16 comprises a tubular portion 40a of oval cross-section, longitudinally slit for resiliency, a blade contact 42a, and locating shoulders formed by an arcuate head portion 36a and by tangs 56. In each embodiment a lens 46 (47) is retained on the housing by a clip 45 (45a).
Patent GB-463562-A (GB)
Title: Improvements in or relating to rolling mills
IPC: B21B37/60
Filed: 1935-10-01
Abstract: 463,562. Distant - control systems. BRITISH THOMSON-HOUSTON CO., Ltd., WALLIS, A. S., POOL, W. J., and GIVEN, R. D. Oct. 1, 1935, No. 27090. [Class 40 (i)] [Also in Group XXII] The rolls of a rolling-mill are automatically adjusted for the successive traverses of the material by means of pairs of contact discs 11, 24, for coarse and fine adjustment respectively, which are carried by shafts 1, 2 driven with the screw-down motor and which are brought into circuit in succession by a step-bystep switch A to control the screw-down motor in accordance with the presetting of associated pairs of discs 29, 32. Each contact disc 11 on the shaft 1 comprises two conducting segments 12, 13 which co-operate with a brush 27 carried by the setting disc 29, and corresponding segments of the discs are wired together to control contactors RC, LC. The contact discs 24 on the shaft 2 are arranged in a similar manner, and corresponding segments are wired together to control contactors RF, LF. The shafts 1, 2 as well as the setting discs 29, 32 are coupled together through gearing having a suitable ratio. When the switch A moves to any position, battery is connected to the brushes 27, 33 of one pair of discs. If the brush 27 is in engagement with either of the segments 12, 13, one or other of the contactors RC, LC is connected up to operate the screw-down motor at full-speed in the raise or lower direction to effect a coarse adjustment, until the brush 27 comes between the conducting segments. The fine adjustment is made in a similar manner, the brush 33 connecting up one or other of the contactors RF, LF to operate the screw-down motor slowly. Each coarse " contactor has preference over the corresponding " fine " contactor, and each " coarse " contactor disconnects the non-corresponding " fine " contactor, the operation of which is delayed by a time relay TD1, TD2. The switch A is advanced by depression of a button 87, Fig. 3. Relay P energizes over contact 85, locks over' contact 86 and connects up the stepping magnet 84. The armature of the latter opens contact 85 at the beginning of its stroke and contact 86 at the end, so that relay P is unlocked and disconnects the magnet 84. The contacts 101-106 enable any desired stopping position to be skipped. When any of these contacts e.g. 102, 103, are operated, a fresh circuit exists for relay P over contact 85 independently of the button 87, so that a further step or steps are taken automatically.
Patent GB-227550-A (GB)
Title: Improvements in apparatus for filtering liquids
IPC: B01D25/26
Filed: 1923-10-30
Abstract: 227,550. Armstrong Siddeley Motors, Ltd., and Viale, S. M. Oct. 30, 1923. Filters having sheet filtering-materials. - A number of annular units each comprising a pair of filter gauzes or the like spaced apart and connected at their inner and outer edges by rings A<@>, A<2>, adapted to provide spaces between adjacent units, are mounted upon a perforated central conduit B, passages A<6>, A<7> being provided in the rings so that flow of liquid may take place either from the central conduit outwardly through the units or vice-versa. The units are secured between a plate C brazed to the conduit B and a plate C<2> which screws on a plug B<3> which closes the end of the conduit B. The gauzes may have a backing of coarser gauze or distance pieces, formed by a wire or strip bent into volute form, may be placed inside the units. The plate C<2> is provided with a handle C<6> and is held against a flange E<2> of a neck-piece E on the casing F by a screw cap E<3> and a spring D.
Patent GB-261169-A (GB)
Title: Improved construction of fire extinguisher
IPC: A62C13/00
Filed: 1925-10-29
Abstract: 261,169. Stuart, W. E., and Denison, F. R. Oct. 29, 1925. Portable pressure reservoirs; sprinklers, automatic. -In an extinguisher containing a liquid under pressure, the outlet for the contents can be opened by hand, or automatically by the fusion of sealing material at a desired temperature. A tube C is screwed on to a stem A mounted in the extinguisher body B. Screwed on to the tube C is a nozzle E in the form of a wing nut and having in its upper part a conical opening E<2> closed by a valve H sealed in place by solder, celluloid &c., and mounted in a spray or sprinkler F. The extinguisher coines into operation when the solder, &c. melts, or when the nozzle E is unscrewed by hand.
Patent GB-1261786-A (GB)
Title: Fluorophosphate glasses
IPC: C03C3/247
Filed: 1969-05-29
Abstract: 1,261,786. Fluorophosphate glass. ERNST LEITZ G.m.b.H. 29 May, 1969 [27 June, 1968], No. 27201/69. Addition to 1,136,658. Heading C1M. A fluorophosphate glass is melted from a mix comprising, in mole per cent:- 58-74 MgF 2 , SrF 2  or BaF 2 , optionally together with CaF 2 ; 5-22 Metaphosphate of at least one of Mg, Ca, Ba and Al; 6-8 at least one of MgO, CaO, SrO, BaO; 0À1-5 BaTiF 6  and/or K 2 TiF 6 ; 0-23 SbF 3  ; and 0-5 Sb 2 O 3 ; the balance, if any, consisting of other compatible constituents and impurities. 0-7 of Y 2 O 3  or 0-14 of YF 3  may also be present. Parent Specification is referred to.
Patent GB-1410098-A (GB)
Title: Load handling apparatus
IPC: B66C11/08
Filed: 1973-06-07
Abstract: 1410098 Controlling loads CLARKE CHAPMAN Ltd 28 May 1974 [7 June 1973] 27204/73 Heading B8B A grab (16), Fig. 1 (not shown), is suspended from a main trolley 12 on a horizontal jib (10) by pairs of holding and closing ropes 18, 20. A link 76 is pivoted on the trolley 12 about an axis 82 inclined at 45 degrees to the vertical. Trunnions 72, 74 carrying pulleys 78, 80, about which the ropes 20 pass, are pivoted on the link 76 about axes 88, 90 parallel to the axis 82. Spacing ropes 47 pass from the trunnions 72, 74 around pulleys 50 on a shuttle trolley 14 and around pulleys 48 to be connected at 56 to a lever 60 pivoted at 58 to the jib. One end of the lever 60 is pivotally connected at 62 to a pistonrod 64 operating in a cylinder 66 pivoted at 68 to the jib (10). Operation of the cylinder 66 rotates the link 76, altering the positions of the ropes 20 with respect to the trolley 12 and causing the grab (16) to rotate about a vertical axis In a modification (not shown) the grab (16) is replaced by a lifting beam for handling containers.
Patent GB-1206488-A (GB)
Title: Method and apparatus for treating tubular knitted fabrics
Inventor: COHN EUGENE
IPC: D06C5/00
Filed: 1968-06-07
Abstract: 1,206,488. Finishing fabrics. S A M C O E HOLDING CORP. 7 June, 1968 [26 March, 1968], No. 27308/68. Headings D1L and D1S. An apparatus for steaming tubular knit textiles in flat, two-layer form, has a spreader (not shown) to which the textile is supplied at 120% or more of its removal speed to obtain a 15% increase in circumference and to be in a tension-free condition when steamed using steamer boxes 34 and 35 for at least 1.5 secs. An air-nozzle 36 prevents the steam from travelling upstream of the textile which is wound up on a roll 42. Calendar rolls 38, 39 may be adjusted to vary the pressure or the textile and are both positively driven at all times to avoid marking the textile.
Patent GB-955262-A (GB)
Title: Process for the manufacture of a bonded material from thermoplastic synthetic resin film
IPC: B29C65/00
Filed: 1960-08-05
Abstract: 955,262. Laminates and laminating. KALLE A.G. Aug. 5, 1960 [Aug. 8, 1959], No. 27322/60. Heading B5N. A method of laminating comprises bringing together two sheets or webs 1a, 1b of thermoplastic material, or of material having a thermoplastic surface, with the thermoplastic surfaces facing one another, and with a lattice-work layer 2 between, on to a support, e.g. a hollow roll 10, at a temperature at which the webs 1a, 1b are flexible but which is lower than that required for bonding, and applying a pressure of gas or air to the outer web 1a and heating, e.g. by infra red lamps 7, to effect bonding. The pressure may be applied by suction through apertures 11 and a hollow shaft 6. The web 2 may be wire mesh or a material woven from metal or polyamide fibres and the webs 1a, 1b may be polythene, polyvinyl chloride, polyamide or polyethyleneterephthalate coated with polythene. The web la overlaps laterally the webs 2, 1b to provide gas-tightness on the surface 3 of the roll 10. In another embodiment, Fig. 1 (not shown), a thermoplastic sheet 1b is placed on a support comprising a heat-insulating member on a piece of wire-netting which extends beyond the member at each edge. The interlayer 2 is placed on the sheet 1b and a vertically movable frame bearing the second thermoplastic sheet 1a which overlaps the sheets 2, 1b is lowered until the sheets of the laminate engage each other. Suction is then applied to the lower face of the support and infra red heat employed to bond the sheets 1a, 1b. A similar apparatus may be used, Fig. 2 (not shown), in which air is delivered to the upper face of the laminate, but the support comprises a heat-conductive, electrically heated member. An endless perforated belt may replace the drum 10 in the first embodiment.
Patent GB-191814-A (GB)
Title: Improvements in or relating to the manufacture of printing characters, margins, vignettes, or the like
IPC: B41C3/02
Filed: 1921-10-15
Abstract: 191,814. Brusa, S. Oct. 15, 1921. Alloys.-An alloy consisting approximately of 90 per cent of zinc and 10 per cent of aluminium is used for casting printers' type and the like. A small percentage of other metals, such as copper, tin, and nickel, may be added to increase the hardness.
Patent GB-444692-A (GB)
Title: Improvements in and relating to the manufacture of light building slabs and of filling material or aggregates adapted for use in their production
IPC: B27K7/00
Filed: 1934-09-25
Abstract: Filling materials or aggregates for use in the production of light weight building slabs are made by impregnating organic material such as woodwool, sawdust reeds, and straw with a mixture of waterglass, glycerine, and hydrochloric acid, preferably at a temperature of about 15 DEG  C.  In an example, the impregnating mixture comprises 1000 c.c. of a solution of waterglass of 4 DEG  B., 50 c.c. of hydrochloric acid and 200 c.c. of glycerine.  The treated material is mixed with a suitable binder such as cement to form slabs.