baber/WOPTO huggingface dataset:
Patent GB-846579-A (GB)
Title: Key clutches for power presses
Inventor: LAKIN LOUIS ERIC
IPC: F16D11/06
Filed: 1957-07-02
Abstract: 846,579. Positive clutches. NORTON IN-. DUSTRIES Ltd. June 23,1958 [July 2, 1957], No. 20822/57. Class 80 (2). A key clutch for power presses of the kind wherein a key 11, pivoted at 13 on a driven member 8, is projected radially outwards by a spring 12 into clutch engagement with one of a series of one or more internal recesses 7 in a driving-ring 4 when a stop 17 is withdrawn axially from the path of a cam part 16 formed on one side of the key 11, has a semi-cylindrical surface at the end 11a of the key which during clutch engagement bears against a complementary surface on a flange 8a of the driven member 8. The clutch is disengaged by moving the stop 17 axially into the path of the cam 16 which then depresses the key 11 to the disengaged position shown. The free end of the key 11 has an arcuate surface 11c bearing against a complementary surface 4a at one side of the recess 7, to transmit load torque through the key in compression rather than shear. During disengagement the key surface 11c bears against the end of a hardened steel block 18 fast on the driven member 8, thus preventing shear forces being applied to the pivot-pin 13 by the cam 16. Lead surfaces 4b are provided on the inner periphery of the driving-ring between the recesses.
Patent GB-532674-A (GB)
Title: Improvements in or relating to the production of acidyl derivatives of cellulose andother organic substances
IPC: C08J7/14
Filed: 1939-07-18
Abstract: 532,674. Cellulose derivatives ; resinous condensation products ; artificial silk &c. ; albumens. DREYFUS, H., MONCRIEFF, R. W., and BATES, H. July 18, 1939, Nos. 20826 and 27093. [Classes 2 (ii) and 2 (iii)] [Also in Group VIII] Filaments, fibres, foils, and other formed articles made of cellulosic or other organic substance containing hydroxy or -NH- groups are acidylated by heating them in a medium containing a mixed anhydride of a polycarboxylic acid and a lower monocarboxylic acid under such conditions that their form is retained. The mixed anhydride may be prepared from a polycarboxylic anhydride and a lower monocarboxylic acid or ester thereof, or from a lower monocarboxylic anhydride and a polycarboxylic acid or ester thereof, e.g. by heating a mixture of the reagents and removing free acid by distillation or by passing ketene through the mixture or by adding to it an organic base such as pyridine or an inorganic base such as calcium, barium, or strontium oxide. The use of a medium containing a mixed anhydride of a lower monocarboxylic acid and succinic, adipic, tartaric, or phthalic acid is excluded. Acetic, propionic, butyric, methoxy-, or ethoxy-acetic, or a chloracetic acid, may be used as monocarboxylic acid. Malonic, pimelic, sebacic, azelaic, iso- or terephthalic, maleic, malic, or citric acid may be used as polycarboxylic acid. The process is applicable to the treatment of yarns and other articles including those made of'wool, casein, polyamides, partially saponified polyvinyl esters e.g. vinyl chloride-vinyl acetate co-polymers, regenerated cellulose including that obtained from the viscose, cuprammonium, or nitrocellulose process or from the saponification of cellulose esters, or those made of cellulose derivatives such as cellulose acetate or other cellulose ester or ether. Acidylation may be affected in the presence of catalysts such as ferric, zinc, or stannic chloride. Diluents such as kerosene, xylene, mixtures of xylene and paraffin wax, anthracene, naphthalene, or o-dichlorobenzene, may be used. In an example, a woven cellulose acetate fabric is heated in a medium prepared by heating sebacic acid with acetic anhydride, driving off the free acetic acid and dissolving the residue in xylene. The fabric is subsequently washed in carbon tetrachloride. The treated fabrics are water resistant, and have a higher melting point and safe ironing temperature than before the treatment. They are insoluble in most solvents. Prior to the acidylation treatment they may be scoured and dry-cleaned to remove lubricant. The first Provisional Specification describes also the acidylation of cotton linters for the production of cellulose derivatives which can be dissolved in organic solvents and converted into filaments, foils, lacquers, or other products. The acidylation may be carried out in presence of a solvent for the cellulose derivative produced. Specification 532,673 is referred to.
Patent GB-1478332-A (GB)
Title: Pre-preg materials chemically integral comosite foam structures prepared therefrom and methods of preparation
IPC: B32B5/28
Filed: 1974-05-10
Abstract: 1478332 Coated products MINNESOTA MINING & MFG CO 10 May 1974 [11 May 1973] 20870/74 Heading B2E [Also in Divisions B5, C3 and D1] Unidirectional ceramic fibre (refractory aluminium borosilicate) optionally having an epoxy resin size and aromatic polyamide fibre are coated with an isocyanate-containing polycarbodiimide prepolymer powder prepared from tolylene diisocyanate in the presence of 1-phenyl-3-methyl-2-phospholine-1-oxide as catalyst, either by dispensing the prepolymer powder from a hopper onto the hot fibre or by passing the fibre through a fluidized bed of the powder. The coated fibre is then cooled and wound onto a drum. Unidirectional glass fibres continuous strand rovings are similarly coated by the fluidized bed technique with the above prepolymer optionally containing inorganic titanate whiskers or a similar prepolymer prepared from tolylene diisocyanate and dipropylene glycol. On emerging from the heated zone the tacky powder coated fibres are brought together to form a rope.
Patent GB-499773-A (GB)
Title: Improvements in the production of pads, batts or upholstery stuffing from loose fibrous material
IPC: D04H1/46
Filed: 1937-07-28
Abstract: 499,773. Needled fibrous materials. TURNBULL, H. T., and LINTAFELT, Ltd. July 28, 1937, No. 20903. [Class 42 (ii)] [Also in Group IX] Compacted pads of coconut fibre, sisal, &c. for stuffing furniture cushions, mattresses, &c. are cut from a sheet produced by passing the fibres 1 between one or more pairs of compression rolls 3, then under one or more rows of barbed needles 7 on a vertically-moved bar. The needles pass through the fibre and through holes in a metal plate 4 and into a rubber pad 8 and they cause the fibres to become interlocked. These may be temporarily supported during the needling by a paper backing 10, which is subsequently removed by hand, or, as shown, by passing the material through draw rolls 11, 12. The backing is removed between the roll 12 and a roll 13, whilst the fibre &c. is reeled or folded at 14.
Patent GB-843063-A (GB)
Title: Improved method for radiation graft copolymerization of n-vinyl lactam monomers on acrylonitrile polymer substrates
IPC: C08F265/08
Filed: 1958-06-30
Abstract: The dyeability of acrylonitrile polymers that contain in the polymer molecule at least 80% by weight of acrylonitrile is improved by preparing an acrylonitrile is improved by preparing an acrylonitrile polymer in aquagel from, incorporating a minor proportion of an N-vinyl lactam monomer, particularly N-vinyl pyrrollidone or N-vinyl caprolactam, in the aquagel, and subsequently exposing the monomerimpregnated acrylonitrile polymer aquagel substrate to a field of high energy radiations, particularly high energy electrons, at a temperature between 20 and 60 DEG C. whereby the aquagel substrate is given a high energy dose at a rate between 1,000 and 50,000 reps per minute until a total dosage of from 10,000 to 200,000 reps has been effected and an N-vinyl lactam graft copolymer has been formed on the acrylonitrile substrate.ALSO:The dyeability of acrylonitrile polymers that contain in the polymer molecule at least 80% by weight of acrylonitrile is improved by preparing an acrylonitrile polymer in aquagel form, incorporating a minor proportion of an N-vinyl lactam monomer, particularly N-vinyl pyrrolidone or N-vinyl caprolactam, in the aquagel, and subsequently exposing the monomer-impregnated acrylonitrile polymer aquagel substrate to a field of high energy radiations, particularly high energy electrons, at a temperature between 20 and 60 DEG C. whereby the aquagel substrate is given a high energy dose at a rate between 1,000 and 50,000 rep per minute until a total dosage of from 10,000 to 200,000 rep has been effected and an N-vinyl lactam graft copolymer has been formed on the acrylonitrile substrate.
Patent GB-1406884-A (GB)
Title: Process for inhibiting scale formation
IPC: C23F15/00
Filed: 1972-05-05
Abstract: 1406884 Calcium sulphate washing; phosphoric acid FISONS Ltd 23 May 1973 [5 May 1972] 20973/72 Heading C1A A process for reducing the deposition of CaSO 4  from wash liquors during the washing of calcium sulphate anhydrite and/or hemihydrate crystals, comprises bringing the crystals, before or during washing, into contact with a surfaceactive agent of the general formula RCOX where R is an alkyl or alkenyl group optionally carrying one or more hydroxyl groups, X is a group -N(R<SP>1</SP>) 2  or OR<SP>2</SP>, each R<SP>1</SP> is an alkyl group optionally interrupted by one or more ether linkages and optionally carrying one or more hydroxyl groups and R<SP>2</SP> is an R<SP>1</SP> group, a hexital residue or the residue of a hexitan or of a hexide. Specific examples of surface-active agents used include: condensates of lauric or oleic acids, of tall oil or of rosin with 12-15 mols. of ethylene oxide; glycerol mono-esters with lauric, stearic, oleic or ricinoleic acids and condensates of glycerol mono-, di-, or tri-esters of such acids with 5-15 mols. of ethylene oxide; and the fatty acid esters of sorbitol and dehydration products thereof and ethylene oxide condensates thereof.
Patent GB-843109-A (GB)
Title: Laminate production
IPC: B27D1/04
Filed: 1956-07-06
Abstract: 843,109. Laminating. ALENIUS, N. R. July 6, 1956, No. 21034/56, Class 140. Rigid laminates are produced from pieces of stiff material such as plywood, veneer, paperboard, or synthetic resin in the form, e.g., of square-section bars, rectangular or square sheets by forming the bars or sheets 3 into a layer without overlapping, moving the layer in a curved path, e.g. between curved guides 7 and a number of laterally-spaced conveyer belts 6 running over guide-rails 4 and wheels 5, putting this layer face-to-face with a layer 11 of bars or sheets making an angle with the bars or sheets 3, moving the assembled layers into a press 12, 13, and actuating the press to unite the layers by glue previously applied to one or both layers. Further layers may be supplied, e.g. as shown, a layer 11 of longitudinally-arranged strips is fed between two layers of transversely-arranged strips 3, 3<SP>1</SP>. Glue may be applied to the contacting edges as well as the faces of the strips. The assembled layers are stationary while being pressed, after which the finished section of laminate passes between rollers 17, the peripheral speed of which is lower than that of conveyer belt 6. In modifications, the spaced conveyer belts 6 move over suction chambers so that the bars or sheets are pressed against the belts by atmospheric pressure and the assembled layers are preliminarily bonded together on longitudinally-extending lines by means of transversely-spaced pairs of endless pressure belts or chains running over rollers, or of transversely-spaced pairs of co-operating rods or bars. The rods or bars are pressed against the assembled layers to unite them and feed them forward by beds of driven rollers, which are intermittently separated to permit return of the rods or bars to press the next section of assembled layers. The pressure may be applied in spots instead of lines. The locally-bonded laminates are later pressed in a second press to produce all-over union of the layers.
Patent GB-904890-A (GB)
Title: Copolymers and process for the production thereof
Inventor: BAER MASSIMO
IPC: C08F22/00
Filed: 1959-06-19
Abstract: A process for the production of a substantially homogenous copolymer of an olefinic compound, containing a methylene group and maleic anhydride or maleinimide comprises polymerizing the methylenic compound at an elevated temperature while agitating the reaction mixture and while adding at a continuous and substantially uniform rate, maleic anhydride or maleinimide the molar rate of addition of which is less than the molar rate at which the methylene compound is polymerizing.  The methylenic compounds may be vinyl esters of alkane monocarboxylic acids having 2-18 carbon atoms such as vinyl acetate and vinyl stearate; vinyl chloride; styrene; vinyl naphthalene; vinyl toluene; vinyl xylene; 2,4-dimethyl styrene; chlorostyrene; 2,5-dichlorostyrene; 2-methyl-4-chlorostyrene; vinyl methyl ether; vinyl isobutyl ether and vinyl pyridine.  The copolymers may contain 60-99 mol. per cent of the methylenic compound and 40-1 mol. per cent of the maleic compound.  Copolymerization is preferably affected at a temperature between 60 DEG  and 120 DEG C. using as catalyst benzoyl peroxide, di(tertiary butyl) peroxide, tertiary butyl hydroperoxide, lauroyl peroxide, tertiary butyl perbenzoate, or azoisobutyronitrile. Polymerization may be carried out as a bulk polymerization or in an inert solvent such as benzene, toluene, xylene, hexane, octane, chlorobenzene, ethylene dichloride or carbon tetrachloride.  In examples a styrene-maleic anhydride or styrene-maleinimide copolymer is produced mixed with polystyrene and if required the copolymer may be isolated by diluting with benzene, and adding cold methanol to precipitate the copolymer.
Patent GB-371243-A (GB)
Title: Improvements in and relating to lighting systems
IPC: F21Y101/00
Filed: 1931-07-23
Abstract: 371,243. Control systems for lamps. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Cadenas, F. J. ; 7501, Ridge Boulevard, Brooklyn, New York, U.S.A.) July 23, 1931, No. 21090. Convention date, July 23, 1930. [Class 38 (iv).] In a system of decorative colour lighting comprising a number of differently coloured electric lamps or lamps fitted with colour caps, means are provided for controlling the intensities of the lamps so as to change the colour design of the pattern. Each group of lamps, or a small number of groups, may be connected to a separate dimming arrangement, the whole system being controlled by a master switch gear. In the form shown in the Figure each bank of lamps of one colour is connected to an electric supply circuit including a switch 57, a resistance 58, and an adjustable contact arm 59 on a shaft 60 which is driven by a motor 65 through reducing gear 67.
Patent GB-1133468-A (GB)
Title: Infra-red electric surface heater apparatuses
IPC: H05B3/74
Filed: 1966-05-12
Abstract: 1,133,468. Hob plates for electric cookers. GENERAL MOTORS CORP. 12 May, 1966 [25 May, 1965], No. 21170/66.Heading F4W. [Also in Division H5] The hob plate of an electric cooker comprises a sheet 22 of heat-proof glass, or recrystallized glass having a raised rim resting on a flange within the cooker top rim (Fig. 3, not shown), and raised hot-plate parts 34 beneath which are suspended electric element supports 32. The supports 32 have reflective linings 68 on their upper surfaces and rest on clips 46 engaging lugs 42 depending from the hob plate.
Patent GB-1236533-A (GB)
Title: Improvements relating to the isomerisation of alkyl aromatics
Inventor: OLIVE MARTIN FREDERICK
IPC: C07C15/08
Filed: 1969-04-25
Abstract: 1,236,533. Isomerizing alkylaromatics. BRITISH PETROLEUM CO. Ltd. 11 March, 1970 [25 April, 1969], No. 21225/69. Heading C5E. A C 8  or C 9  alkylaromatic feedstock comprising at least one polymethylbenzene and ethyl or propyl benzene is isomerized by contact at 350-480‹ C. and 0-1500 p.s.i.g. in the presence of H 2  with a catalyst comprising a hydrogenating component and an alkali metal deficient mordenite, the product containing isomerized polymethyl benzenes and a reduced content of ethyl or propyl benzene. The feedstock preferably comprises m- and/or o-xylene together with ethylbenzene and the product comprises a mixture of o-, m- and p-xylenes. The hydrogenating component of the catalyst may be Co, Ni, Pt, Pd or Ag present in amount 0À1-5 wt. per cent. The isomerization process may form a step in a separation process wherein a polymethylbenzene is separated from a mixed alkylaromatic feed, e.g. by crystallization, the remaining mixture depleted in polymethylbenzene is isomerized, the isomerization product fractionated to remove higher and lower hydrocarbons and the isomerized product recycled at least in part to the separation step.
Patent GB-768711-A (GB)
Title: Improvements in or relating to endless tracks for self-laying track vehicles
Inventor: ATKINSON RICHARD LESLIE
IPC: B62D55/20
Filed: 1954-07-21
Abstract: 768,711. Endless tracks for vehicles. ATKINSON'S AGRICULTURAL APPLIANCES, Ltd. July 21, 1955 [July 21, 1954], No. 21229/54. Class 79(1). In an endless track for vehicles comprising a series of transverse metal driving bars 15 alternating longitudinally with at least one series of internally reinforced rubber pads 75, the reinforcements (not shown) providing relative hinging movement at X between successive bars and pads, the ground-remote surfaces of the bars and pads are substantially coextensive to provide parallel longitudinal paths for track bogies (not shown), each path being flanked by guide elements 18, 82 presenting vertical faces to the wheels. As shown the reinforcement of each pad is formed of chain or plates to the ends of which are pivoted at X connector pieces 76, 77. Projections 78 and recesses 79 on the pieces 76, 77 of longitudinally adjacent pads 75 are adapted to mate and be positioned beneath the associated bar 15 which includes longitudinal flanges 24 formed with recesses 25 receiving a plate 26. The bars 15, pieces 76, 77 and plates 26 are connected together by bolts 27 and nuts 28, the pieces 77 having annular projections 80 surrounding bolt holes 81 and engaging complementary recesses (not shown) on the underside of the bars 15. The bars 15 are provided with sprocket-engaging portions 17 and the bogieguiding members 18 and may be formed of aluminium-bronze. The bogie-guiding members 82 are moulded into the rubber of the pads 75 and may be internally reinforced, Figs. 5 to 7 (not shown). The pads 75 are formed with recesses 83 for improving ground adhesion. In a modification, Figs. 8 to 13 (not shown), a single centrally-located series of pads alternates with driving bars having sprocket-engaging portions at both lateral edges. The invention may be applied to non-driven endless tracks on, for example, trailers.
Patent GB-617987-A (GB)
Title: Improvements in automatically discharging disinfectant or deodorizing liquid with the water discharged from a flushing cistern
IPC: E03D9/03
Filed: 1946-07-17
Abstract: 617,987. Disinfecting &c. apparatus for waterwaste preventers. GOUGH, F. W. July 17, 1946, No. 21360. [Class 26] In apparatus for discharging a predetermined quantity of disinfectant or deodorizing liquid with the water discharged from a flushing cistern when the level of water in the cistern drops to a predetermined level, a hollow 'valve 4 slidable in a sleeve 3 at the bottom of a container 1 forms a measuring chamber for the entire quantity of disinfectant or deodorizing liquid to be discharged at each flush, and when in the raised position is closed to the outside but open to the inside of the container, and when lowered is first closed to the inside and afterwards opened to the outside of the container to discharge its contents into the cistern. The valve 4 may be cylindrical with upper and lower slots 6, 7 and with a conical cap 10 which facilitates escape of air through the slots 6 into the container when the valve is being filled, whilst the sleeve 3 may have slots 8 which allow air from the cistern to enter the slots 6 when the valve is discharging. The valve is carried by a float 5 the downward movement of which is limited by a cage 9. The container 1 may be separate from or cast integrally with the cistern.
Patent GB-903101-A (GB)
Title: Apparatus for forming wire, rod or like material
Inventor: SPAVEN CHARLES OWSTON
IPC: B21F1/06
Filed: 1959-06-23
Abstract: 903,101. Bending. SPAVEN DEVELOPMENTS Ltd. Sept. 22, 1960 [June 23, 1959], No. 21430/59. Class 83 (4). [Also in Group I] In apparatus for bending wire 15, Fig. 7, to form a loop 14 in making fencing wire droppers &c. the wire 15 is bent round a fixed former 3, Fig. 1, by a pair of oppositely-acting jaws 4, 5 pivoted adjacent the former 3 and operated in succession to positions embracing the former 3. In forming the first loop the wire 15 is located against an adjustable end-stop 16 and the lever 11 is actuated manually to move the jaw 4 to the position shown in Fig. 6 in which the wire is bent to " U " form. A recess 21 on the jaw locates the wire and a helical groove 22 in the former 3 guides the wire to the required form. A stop 23 is provided to prevent the initial movement of the lever 11 to its full amount and a further stop 27 is provided to ride over the lever 11 and lock it in this position against return movement. The second lever 12 is then actuated manually to operate the jaw 5 to the position shown in Fig. 7 to complete the loop 14. In this operation a finger 35 on the jaw 5 presses the wire into an upper inclined groove 32 to form a straight portion 33 lying substantially diagonally across the loop. Operation of the lever 12 disengages the stops 23, 27 to free the lever 11 which is then free for an additional small extra movement which brings an abutment face 8 into contact with the wire. In forming subsequent loops the wire is initially located by placing the formed loop over one or other of retractable pins 36 mounted on slides 39. Skids 50 above the slides support the wires during the initial bending stage after the pins 36 have been retracted.
Patent GB-225274-A (GB)
Title: Improvements in or relating to ticket punches.
Inventor: CLAYTON TILLY ERNEST
IPC: G07B11/05
Filed: 1923-08-25
Abstract: 225,274. Brecknell, Munro, & Rogers, Ltd., and Tilly, E. C. Aug. 25, 1923. Ticknet punches.-In a ticket punch comprising a feeler, a punch, a cutting-disc, a full-stroke device, registering and locking mechanism, and, if desired, a bell, the whole of the operating mechanism is assembled on the back plate before the front plate is put on, and a conductor's lock is provided which is released simultaneously with the setting of the counter to zero. The cutting- die 5 having a ticket-slot 7 is mounted on the back plate 1, and the operating bar 2 for the ticket feeler and punch 4 is actuated by a hand or thumb lever 10<a> pivoted to the cover 6 at 10<b> and having a pin 10<c> adapted to engage lugs on the end of the bar 2. The bar 2 is normally returned after actuation by a spring 8 engaging a lug 3<a> on a plate 3 secured to the bar, but in case of jamming, the bar may be freed by the lever 10<a>. The device which ensures that a full stroke of the bar 2 shall be made comprises a pawl 11 pivoted to the back plate 1 and adapted to engage a notch 2<a> in the bar. The pawl is engaged by a shoulder 9<a> on a spring-pressed lever 9 mounted on the plate 3. A tooth 6<a> on the bar 2 may be arranged to act on a cam 6b to cause a hammer 6d to strike a bell. A counter 13 is actuated by a plate 12 on the bar 2, and the whole mechanism may be locked by the conductor sliding a bent plate 15, Fig. 2, into engagement with the plate 12. This operation is effected bv the conductor inserting a pin into a hole 14 in the back plate 1 and pushing the platen 15. The mechanism can be interlocked only by removing the face plate 16 and actuating the zeroizing lever 17 of the counter 13. The spindle 18 of this lever has an arm 19 which engages a pin 20 on the slide 15 to return it to unlocked position. The sliding face plate 16 has a pin 27 engaged by a spring-pressed locking bolt 23, which may be disengaged by a pin inserted in a hole 23<a>. This lock is sealed by a paper stirip 28 held in position by a hinged plate 22.