baber/WOPTO huggingface dataset:
Patent GB-795056-A (GB)
Title: Improvements relating to apparatus for accelerating electrically charged particles
Inventor: PETRIE DOUGLAS PERCIVAL RAMSAY
IPC: H01J5/06
Filed: 1954-09-08
Abstract: 795,056. Particle accelerators. ASSOCIATED ELECTRICAL INDUSTRIES, Ltd. Sept. 8, 1955 [Sept. 8, 1954], No. 26036/54. Class 39(1). In a particle accelerator in which graded D.C. potentials are applied to an array of annular electrodes distributed along a tube through which the charged particles pass, a retarding field is set up in the neighbourhood of the surface of the particle emitting electrode, or of an apertured plate positioned between the emitting electrode and the accelerating electrodes, in order to reduce the emission from the surface of ions of the same polarity as the particles being accelerated. The retarding field may be produced by applying to the adjacent accelerating electrode or electrodes a potential of opposite polarity to that of the other accelerating electrodes. A grid 8 may be provided, as shown, across the opening of the first accelerating electrode 5. The grid may have a central opening just wide enough to permit passage of the beam, and the distance from grid to plate 2 is preferably not less than the distance between grid wires. The invention may be applied to a positive or negative ion accelerator. Reference has been directed by the Comptroller to Specification 697,105.
Patent GB-504921-A (GB)
Title: Garages
IPC: E04H6/10
Filed: 1937-09-28
Abstract: 504,921. Garages. FROMMER, M. Sept. 28, 1937, No. 26226. [Class 20 (i)] A garage comprises a series of intermediate transverse landings E' connected by two series of sloping storage floors E, E<1> to end landings E<2>, E<3>, which may be flat or curved, the portions of each series of floors having an opposite inclination on opposite sides of a longitudinal wall E<5>. Tracks for the vehicles may be marked out upon each series of inclined floors and in a narrow building these tracks may flank the longitudinal sides. Off-shoots of the main building may occur in various positions where space permits and these offshoots are provided with a series of flat floors connected to the landings of the main building.
Patent GB-1422511-A (GB)
Title: Table tennis net holders
IPC: A63B61/02
Filed: 1974-06-13
Abstract: 1422511 Table-tennis net-holder H KETTLER [trading as HEINZ KETTLER METALLWARENFABRIK] 13 June 1974 [13 June 1973] 26310/74 Heading A6H A table-tennis net-holder comprises a base 1, a net post 2 at one end and a flange 4 at the other for engaging a slot in the table, there being clamping means for engaging the table on each side of the flange. The clamping means are circular rubber rollers (indicated by broken lines in the figure) mounted on a bolt passing through a chosen hole 20a-20d according to the thickness of the table top 30. A vertical flange 5 of the holder also engages the table. The net 6 has a tubular edge 7 engaged by a wire 8 hooked to engage in the post 2 and moveable vertically by a knurled nut 12 to adjust the net height. A string 15 extending across the net is tightened by hooking a chain link 16 onto a hook 17 on the post 2. The bottom of the net is received in a slot 18 in the base.
Patent GB-979072-A (GB)
Title: Improvements in or relating to mobile stackers or lift apparatus
IPC: B66F9/16
Filed: 1961-07-20
Abstract: 979,072. Lift trucks. D. M. KING. July 17, 1962 [July 20, 1961], No. 26321/61. Heading B8H. A stacking device comprising a pair of vertical guides 10 suspended from an overhead trolley (not shown) is provided with a lifting carriage 11 movable along the guides and pivotally supporting a pair of forks 19 about a horizontal axis so as to be movable through 180 degrees from one operative position, shown in full lines, into a second operative position, shown in chain lines. Each fork 19 is pivoted between lugs on a member 16 which is slidable between a pair of cross-members 15 extending across the carriage 11. An upper crossmember 20 of the carriage 11 is provided with latches 21 for holding the forks in a vertical inoperative position. In a modification (not shown), the forks are replaced by a platform formed of telescoping sections so as to be variable in width. The guides 10 may be mounted on a turntable on the overhead trolley, and may be replaced by a single guide. In a further embodiment (not shown), the guides extend upwardly from a mobile chassis.
Patent GB-1340287-A (GB)
Title: Non-aqueous refractory ramming mixes
IPC: C04B35/03
Filed: 1972-06-06
Abstract: 1340287 Refractory ramming mixes DRESSER INDUSTRIES Inc 6 June 1972 [9 July 1971] 26354/72 Heading C1J A non-aqueous refractory ramming mix comprises a particulate basic refractory material and from 2 to 12 wt. per cent of a lubricating oil and a metallic stearate. The refractory material may be dead-burnt magnesite or dead-burnt dolomite and the metallic stearate magnesium, aluminium, calcium, sodium or zinc stearate. Burnt lime or chrome ore may be added. In the example mixes comprising (i) magnesite, non- detergent motor oil and magnesium stearate and (ii) dolomite, magnesite, carbon black, non- detergent motor oil and magnesium stearate are described.
Patent GB-742034-A (GB)
Title: Improvements in the manufacture of cellulose esters
IPC: C08B3/12
Filed: 1953-09-24
Abstract: Cellulose is subjected to esterification with at least one anhydride of a lower fatty acid, containing 2-4 carbon atoms in the molecule, and sulphuric acid as catalyst so that the cellulose ester is formed in solution, and the cellulose ester is partially hydrolyzed while in solution.  The partially hydrolysed cellulose ester still in solution is submitted to esterification under substantially anhydrous conditions with a dicarboxylic acid anhydride at an elevated temperature in the presence of at least one lower fatty acid, containing 2-4 carbon atoms in the molecule, as solvent and alkali metal acetate.  Substantially anhydrous conditions in the bath for the second esterification may be obtained by adding to the bath an anhydride of a fatty acid containing 2-4 carbon atoms in the molecule.  Preferably, any inorganic acid is neutralized before the final esterification by adding an excess of alkali metal acetate. The cellulose may be reacted with acetic anhydride and acetic acid using sulphuric acid as catalyst or a mixed ester may be obtained by adding propionic or butyric acid or anhydride to the acetylation mixture.  The partial hydrolysis may be effected by adding aqueous acetic acid until the concentration of lower fatty acid is reduced to 80-95 per cent, and allowing the mass to stand for the desired time at an elevated temperature, e.g. 100-150 DEG  F.  When the hydrolysis has been carried out to the desired extent, there is added an alkali metal acetate or that compound may be formed in the mixture by adding sodium or potassium carbonate or hydroxide.  Preferably, there should be 0.1 to 3 parts of sodium acetate in the esterification mass, per part of cellulose, over and above that used for neutralizing the sulphuric acid.  If desired some or all of the alkali metal acetate may be added prior to completion of the hydrolysis.  Dicarboxylic anhydride and an anhydride of a lower fatty acid are added and the mass may then be maintained at 140-212 DEG  F. until the desired dicarboxylic acid radical content has been introduced into the cellulose ester.  Cellulose mixed esters containing acetyl, propionyl or butyryl, and phthalyl, succinyl or maleyl radicals may be obtained.  In an example, the production of cellulose acetate phthalate containing an acetyl content of 26 per cent and a phthalyl content of 26 per cent is described.  The mixed ester is readily soluble in dilute sodium carbonate and in ammonia water. Specification 552,135 is referred to.
Patent GB-1245680-A (GB)
Title: Method for dyeing textile materials
IPC: D06P3/76
Filed: 1969-05-23
Abstract: 1,245,680. Dyeing textiles. MITSUBISHI RAYON CO. Ltd. 23 May, 1969 [23 May, 1968; 5 Aug., 1968; 11 Nov., 1968], No. 26419/ 69. Heading D1B. The dimensional stability of textiles during dyeing is improved by a) covering the textile with a solution containing a cellulose alkyl ether or derivative thereof having a thermal gelating temperature not lower than 35‹C b) then treating the textile material with a hot aqueous liquor having a temperature not lower than the said gelating temperature, c) rinsing with a cold liquor of temperature below that of the gelation temperature, the solution a) or hot aqueous liquor b) containing a dye. A carrier may be present in one or both of the processes a) and b). Cellulose alkyl ethers selected from cellulose methyl ether of degree of etherification 0.6->2.1, the ethyl ether of etherification 0.6->2.1 and the methyl ethyl ether of degree of etherification 0.6-#2.1 and/or a cellulose alkyl ether derivative consisting of hydroxy alkyl ether in Which the hydroxyalkyl group is hydroxyethyl, hydroxypropyl or hydroxybutyl group. The cold water in c) above washes out the cellulose alkyl ether from the textile. Textiles dyed are cellulose di-and tri-acetate, polyamides, polyesters, polyacrylonitriles.
Patent GB-1073158-A (GB)
Title: A plate heat exchanger
Inventor: KOVALENKO LEONID MAXIMOVICH
IPC: F28F3/08
Filed: 1964-06-26
Abstract: 1,073,158. Plate - type heat exchangers. UKRAINSKY NAUCHNO-ISSLEDOVATELSKY I KONSTRUKTORSKY INSTITUTE KHIMICHESKOGO MASHINOSTROENIJA. June 26, 1964, No. 26486/64. Heading F4S. In a heat exchanger comprising a stack of approximately rectangular corrugated plates between each adjacent pair of which passages are formed for one or other of the heat exchanging fluids, the usual fluid entry, exit and by-pass ports (3, 3<SP>1</SP>, 3<SP>11</SP>, 3<SP>111</SP>, 10 and 10<SP>1</SP>) formed in the plate corners are of triangular shape, one side of the triangle being parallel to first or second parts of the corrugations, said first and second parts comprising the two arms respectively of V-shaped corrugations; and alternate plates being turned through 180 degrees with respect to the neighbouring plate.
Patent GB-1388974-A (GB)
Title: Fully-filled electric cable
IPC: H01B7/02
Filed: 1973-06-04
Abstract: 1388974 Filled Cables INDUSTRIE PIRELLI SpA 4 June 1973 [7 June 1972] 26494/73 Heading H1A In a multi-conductor cable in which the core 1 and an optional insulating tape layer 2 are both impregnated with a gel filling medium, a composite two-ply insulating tape 3 has an impregnated inner ply 3<1>, e.g. of paper, and an impermeable outer ply 3<11> of thermoplastics material. A surrounding screening layer comprises a metal tape 4, e.g. of aluminium, which carries an inner coating 4<1>, and an outer coating 4<11>, both of thermoplastics material. A thermoplastics sheath 5 is extruded directly over the screening layer, becoming bonded to its outer coating 4<11>, and the heat of the extrusion process may also cause the inner coating 4<1> to become bonded to the outer ply 3<11>. Alternatively, this latter bonding operation may be carried out as a separate process. Suitable thermoplastics materials include polyethylene, polypropylene, ethylene-propylene copolymers and P.V.C. Insulating layer 3 may either be wound helically or wrapped around with its edges extended longitudinally and overlapped. The coated screen 4 is preferably wrapped, with its longitudinal edges overlapped, but it may instead be helically wound. Where both are wrapped, the seams are oppositely disposed. Insulating layer 2 may be omitted.
Patent GB-1421068-A (GB)
Title: Safety device for a nuclear reactor
Inventor: MALAVAL C
IPC: G21C9/033
Filed: 1973-06-04
Abstract: 1421068 Controlling nuclear reactors GROUPMENT POUR LES ACTIVITES ATOMIQUES ET AVANCEES 4 June 1973 [2 June 1972] 26595/73 Heading G6C A nuclear reactor embodying a safety control device utilizing a liquid reaction absorber, e.g. Li-6, comprises a reservoir 1 disposed in the reactor and including an upper compartment 3 containing the absorber and gas under a pressure P1 and a lower compartment 4 containing gas under a higher pressure P2, the lower compartment having an opening to the exterior of the reservoir, which opening normally is sealed by means which is caused to open under certain reactor conditions so as to depressurize the lower compartment 4 whereby the absorber flows thereinto from the upper compartment 3. In the embodiment shown the opening is formed by a tube 7 and is closed by a brazed-in uranium plug 8. Liquid absorber is introduced into the compartment 4 initially via a charging aperture 11 and gas, e.g. argon or helium, is supplied via a valve 10 to create the aforesaid pressures and move the liquid into the compartment 3 through an annular conduit 5 and siphon 6. The reservoir 1 is then disposed in the reactor (e.g. a sodium-cooled, fast reactor) and, in the event of an undue rise in neutron flux, the plugretaining braze melts, plug 8 is ejected, the lower compartment is depressurized, and the absorber flows thereinto. In another embodiment (not shown) the opening of the lower compartment is closed by a frangible diaphragm and the reservoir is disposed in a gas-cooled reactor. Loss of reactor coolant pressure causes the diaphragm to rupture.
Patent GB-282936-A (GB)
Title: Improvements in/or relating to arrangements of spark gaps and sparking plugs
IPC: H01T13/32
Filed: 1926-10-25
Abstract: 282,936. Dubilier, W. Oct. 25, 1926. Sparking-plugs are fitted with an auxiliary electrode 6 secured at one end either. to the casing or to the central electrode and varying in distance from the other member according to the temperature. At starting, the free end may abut against the casing electrode 8, thus limiting the minimum size of the auxiliary gap.
Patent GB-684160-A (GB)
Title: Improvements in or relating to roller driving chains
Inventor: LOGAN HUMPHREY THOMAS
IPC: F16G13/06
Filed: 1949-10-17
Abstract: 684,160. Driving-chains. HARDYMAN, T. F., and LOGAN, H. T. Jan. 12, 1951 [Oct. 17, 1949], No. 26629/49. Class 24 A driving chain comprises joint pins each having a cylindrical body portion 11 and necks 12 terminating in heads 13. The side links are in the form of plates 16 each formed with a slot 18, Fig. 3, having an enlargement 20 through which a head 13 can pass, the heads 13 being chamfered to facilitate this operation. By moving two of the joint pins close together and sliding two link plates in opposite directions the chain can be dismantled as shown in Fig. 5. The slot 18 may have slight contractions at its ends so that the necks of the joint pins are a snap fit therein. The length of the necks 12 is made slightly greater than the thickness of two link plates and the body portions 11 of the joint pins have chamfers 15 to permit lateral flexing of the chain. A modified form of joint pin has a cylindrical body portion fitted with a roller, the size of the body portion being such that it can pass through the slot enlargement. Lugs or other projections may be provided on the link plates to render the chain suitable for use as a conveyer chain.
Patent GB-1041084-A (GB)
Title: Process for the production of high molecular weight polyketals
IPC: C08G4/00
Filed: 1963-07-05
Abstract: The invention comprises polyketals of formula <FORM:1041084/C3/1> where R1 is a bivalent aliphatic, cycloaliphatic, aromatic or heterocyclic radical R2 is an aliphatic, cycloaliphatic, aromatic or heterocyclic radical, R1 and R2 when they are aromatic radicals may be substituted by halogen atoms, amino groups and/or alkyl groups and x is from 100 to 100,000.  The polyketals are prepared by reacting a ketone or monomeric ketal with a diol in the presence of an acid catalyst at elevated temperature.  In examples, polyketals are prepared from acetone, benzophenone, benzophenone dimethyl ketal, 2,2-dimethoxypropane, 1,4-cyclohexanedimethanol, 2,2-dimethylpropanediol-1,3 and 1,4-xylylene glycol, in the presence of p-toluene sulphonic acid and p-nitrophenyl-diazonium boron fluorate.  Other starting materials and catalysts are mentioned.
Patent GB-297828-A (GB)
Title: Improvements in gas meters
IPC: G01F15/00
Filed: 1928-09-18
Abstract: 297,828. Kromschr÷der Akt.-Ges., G. Sept. 30, 1927, [Convention date]. Gas meters are provided with means for lubricating the surfaces of valves and valve-seatings in sliding contact. Fig. 1 shows a slide valve s formed hollow to receive a charge of lubricant inserted through an opening o closable by a screw plug. When the valve is in motion the lubricant is drawn through fine bores b from the chamber i to the engaging sliding surfaces. Fig. 6 shows a meter in which the left-hand valve s is fitted with lubricator cups a connected to the small bores b in the valve and the right-hand valve seating p has a small bore b connected to a lubricator y fitted with a pressure plunger j having a spindle u extending through the casing w of the counting mechanism. Alternatively the lubricator cips a may be connected to small bores in the valve seating. The cups a may be fitted with a valve v pressed on its seating by a tension or compression spring f. Temperature changes in one direction open the valve to admit gas to the cup and in the other direction to force a small amount of oil to the bearing surfaces.
Patent GB-332442-A (GB)
Title: Improvements relating to electric welding machines
IPC: B23K11/04
Filed: 1929-09-03
Abstract: 332,442. British Insulated Cables, Ltd., and Wilson, L. B. Sept. 3, 1929. Welding.-In a machine for electric slow butt, flash, or spot welding, an initial light pressure followed by a heavy upsetting pressure is effected by a pair of controlled springs adapted to be released automatically at the appropriate times. The siiding work clamp is secured to the head 50 of a spindle 2. Two shafts 7 and 8 are mounted in bearings 5, 6 in the body 1. The shaft 7 carries at one end a lever 9 which is pivotally connected to an arm 11 pivoted to a cross-arm 14 in which the spindle is screwed at 3 so as to adjust its initial position. The cross arm carries at its other end a pivoted arm 15, which is pivotally connected to the upper end of a lever 16 mounted on the other end of the shaft 7. This lever engages an eccentric 23 on the shaft 24. The shaft 8 carries at one end a lever 25 engaging a notched cam 47 on the shaft 24 and connected by an arm 28 to a cross-member 38, the other end of which is mounted in an arm 31 pivotally connected to a lever 34 mounted on the other end of the shaft 8. A strong spring 43 is mounted between an adjustable sleeve 44 screwed in to the body and the cross-member 38 and a weak spring 42 is mounted between an adjustable sleeve 45 screwed in to the sleeve 44 and a member 41 screwed at 4 on the spindle 2, and provided with a collar 46. Rotation of the shaft 24 by an electric-motor causes the lever 16 to release the spring 42 so as to push the spindle 2 forwards to apply a light pressure to the work, the current being switched on. Subsequently the lever 25 engages the notch 52 in the cam to release the spring 43 suddenly so as to push the cross-member 38 forwards. This member engages the collar 46 so as to push the spindle forwards to impart a heavy pressure to the work. When the operation is complete the current is automatically switched off. According to the Provisional Specification a single spring and cam may be used in flash welding.
Patent GB-749654-A (GB)
Title: Stitch severing and sole separating machine
Inventor: BROMLEY JOSIAH HENRY
IPC: A43D87/00
Filed: 1953-09-29
Abstract: 749,654. Heel seat forming. STANDARD ENGINEERING CO., Ltd. Jan. 5, 1954 [Sept. 29, 1953], No. 26765/53. Class 17 (1). In a machine for parting the seat-end of a sole attached to a shoe to form a tongue-like extension for the cup in a wood heel, the oscillating knives are yieldably mounted in such a way that a shoe, operatively positioned relatively thereto, can be pushed to a predetermined position with retraction of the knives, and the knives thereafter set in motion and moved forward under a resilient constraint, without further movement of the shoe, to part the sole to a predetermined heel breast line. - The right and left hand knife levers 12, one only being shown in Figs. 1 and 2, with knives 16, are pivoted to bell-crank levers 13, the other arms of which are connected to limit links 15, springs urging the ends of these arms along slots in the links 15. Levers 12 are moved simultaneously to and fro in curved paths by eccentric straps 11 connected to eccentrics arranged 180 degrees apart on a member 7 splined to a shaft 4 which is driven through clutch members 3, 2 by an electric motor when shaft 4 is raised by means of a pedal, not shown, acting through lever 8. A plate 18 is adjustable longitudinally along the shoe gauge 17 to suit the length of the sole of the shoe, a spring 19 maintaining teeth on ports 17, 18 in engagement, and gauges indicate the degree of adjustment. The eccentrics may be arranged to produce unidirectional movements. When the shoe is presented, it pushes levers 12 rearwardly, bell-cranks 13 turning against the springs, until the shoe touches the gauge, and when the treadle is thereafter operated the knives oscillate under the resilient constraint of the springs acting on,the bell-cranks.
Patent GB-667420-A (GB)
Title: Improvements in "knock-down" boxes
IPC: B65D6/16
Filed: 1949-10-18
Abstract: 667,420. Knock-down boxes. ALLAVENA, R. Oct. 18, 1949 [Oct. 22, 1948], No. 26773/49. Class 18. The sides, top and bottom of a knockdown box are separable, the sides fitting into grooves formed on the top and bottom by angle frames 5 and rabbets. Each box member comprises two layers of planks at right angles to each other, the top and bottom rabbets being formed by an inner layer on these members, of reduced dimensions. The outer layer planks of the side members interlock, and protecting pieces 7 are secured to them. The frames 5 are notched as at 6 to prevent the slipping of securing straps.
Patent GB-1431823-A (GB)
Title: Composition and method for imparting fire resistance and water  repellency to fabric
IPC: D06M13/152
Filed: 1973-06-05
Abstract: 1431823 Coated water repellant fire resistant fabrics KELLWOOD CO 5 June 1973 [30 June 1972] 26798/73 Heading B2E [Also in Division C3] Woven fabrics are rendered fire resistant and water repellant by treating them with a coating composition which comprises between 5 and 23 wt. % of a liquid chlorinated paraffin, between 20 and 40 wt. % of a resinous chlorinated paraffin, between 4 and 12 wt. % of an ethylene/vinyl acetate copolymer and between 3 and 18 wt. % of a fire retardant. Additional components which may be present are up to 30 wt. % of a paraffin wax of melting point between 124‹F and 160‹F, up to 50 wt. % of a filler, up to 20 wt. % of a pigment, up to 3 wt. % of a fungicide and up to 15 wt. % of an organic solvent. The preferred fire retardant is antimony trioxide. Suitable solvents, when used, are esters, ketones, chlorinated hydrocarbons, and naphthas. In the examples, fabrics, especially tent fabric, are fed from rolls by means of rollers, to a coating station where the molten composition is fed onto the web of fabric ahead of a doctor blade.
Patent GB-1273582-A (GB)
Title: Rollers
Inventor: KANTOR PAUL RALPH
IPC: B41N7/06
Filed: 1969-05-27
Abstract: 1,273,582. Printing apparatus. P. R. KANTOR. 27 May, 1969 [27 May, 1968], No. 26799/69. Heading B6C. An inking or dampening roller, 8 has two helical surface discontinuities 16, 17 of opposite hands and joined at their ends. The discontinuities 16, 17 may be grooves, with lands 30 between them, or may be ridges. The rollers may be of an ink-receptive or of a waterreceptive material, and may have a surface of ink-receptive material such as copper, brass or polytetraflurethylene, with recessed bands or water-receptive material such as chromium. Alternatively the surface may be waterreceptive, with recessed ink-receptive bands or raised ink-receptive strips. In use the rollers is laterally reciprocated in contact with a roller R. The roller 8 may be part of a combined inking and dampening system in a lithographic press.