baber/WOPTO huggingface dataset:
Patent GB-1398712-A (GB)
Title: Hydraulic rams
IPC: B22D17/26
Filed: 1971-07-23
Abstract: 1398712 Casting machines ESGO PLASTIC MACHINERY CO Ltd 20 July 1972 [23 July 1971] 34653/71 Heading B3F [Also in Division B5] A die casting mould (not shown) is closed by an hydraulic ram comprising a two-diameter piston 10, 14 operable in cylinder portions 12, 16, a flow path 30, 32, 34 through the piston, and a valve 22 operable in the flow path, whereby fluid bypasses the piston to flow at line pressure into the cylinder portion 16 to displace a piston 18 therein, the cylinder portion 16 being further pressurized by displacement of the first piston by line pressure applied through the valve 22. A light spring 24 biases the nose 26 of valve 22 towards a position closing a tube 30 connected to a source of fluid pressure. The first stage of mould closing is effected by supplying fluid under pressure to cylinder 16 through the tube 30, past nose 26, through radial ports 33 in valve 22 and outlet 34 so as to move the piston 18. A collar 40 fast with the piston 10 has a clearance with respect to the tube 30 so that some fluid passes through this clearance and into a space 42 behind piston 10. This causes slight movement of piston 10 which increases as soon as the piston 18 reaches its mould closed position. Means may be provided to allow fluid flow to space 42 while the valve 22 is seated, e.g. through a radial port which is uncovered by movement of collar 40 before the latter contacts the end of valve 22. Rapid opening of the mould is effected by supplying fluid through passages 48, 46 and 52, 50.
Patent GB-1242820-A (GB)
Title: Improvements in and relating to worm and nut steering gear
IPC: F16H19/04
Filed: 1970-07-17
Abstract: 1,242,820. Vehicle steering mechanisms. ZAHNRADFABRIK FRIEDRICHSHAFEN A.G. 17 July, 1970 [19 July, 1969], No. 34682/70. Heading F2Q. In a vehicle steering gear comprising a ball recirculating nut 5 mounted on a threaded steering shaft 2 and having rack teeth 6 meshing with a toothed sector 8 on a sector shaft 9, the sector 8 consists of a fine-forged sector portion which is secured by serrations on to a shaft body 9 of bar stock. The sector 8 overlaps a bearing 13, carried by a cover 14, to such an extent that the distance between the plane of application of force of the sector part II-II and the bearing 13 is zero, or very small. An adjusting device 15 is provided.
Patent GB-301324-A (GB)
Title: Improvements in or relating to arrangements for examining the local strength of fabrics, paper, rubber and the like
IPC: G01N3/40
Filed: 1928-11-26
Abstract: 301,324. Schubert, F. Nov. 26, 1928. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 26, 1928]. Testing fabrics, paper, and rubber.-Comprises a method in which the test material is held in tension in all directions, and cut in the main testing direction flush with two opposite sides of a pressure tool, which subsequently acts by pressure on the material between the cuts. Several forms of tool are described of which Fig. 2 is a sample in which the cutting edges are formed on projections at each side of a rectangular section tool 1. Fig. 1 shows how such tool is used to test the warp threads a of a fabric, the edges 2 first cutting the weft threads b close to the sides of the tool which subsequently breaks the warp threads still under tension between the cuts x - - x. The surface of the tool is roughened to prevent the warp threads sliding off. The known type of pendulum machine for tensile tests shown in Fig. 5 may be used, the tool 1 being secured to the sliding bolt 10 and the material 9 being clamped in a holder 8. Adjustable weights 5 are placed on the sliding bolt 10 and the_specimen 9 moved up against the tool the pendulum 6 being retained in the position reached along the scale 7. A double pendulum testing device is also described. The strength of the material in the main directions may thus be determined, that for paper being in the machine direction.
Patent GB-894050-A (GB)
Title: Improvements relating to rubber suckers
IPC: A63H11/04
Filed: 1959-10-14
Abstract: 894,050. Pneumatic-sucker fasteners. JEWISON, R. H. May 27, 1960 [Oct. 14, 1959], No. 34820/59. Class 44, A rubber sucker fastener intended to grip for only a short time has a contact surface with numerous minute irregularities which may be formed by sand-blasting or etching the mould in which the sucker is made, by roughening the sucker, or by incorporating in or sticking to it finely divided solid matter. Specification 716,949 is referred to.
Patent GB-874570-A (GB)
Title: Thiophosphoric acid esters
IPC: C25D5/50
Filed: 1959-10-14
Abstract: The invention comprises compounds of the formula <FORM:0874570/IV (b)/1> where R is an alkyl radical of 1-4 carbon atoms.  These compounds may be prepared by reacting a fluorophenylthiomethyl halide with a salt of an O,O-dialkyl-thiolphosphoric acid, preferably at elevated temperature and in inert diluents such as alcohols, lower ketones, benzene and toluene.ALSO:Insecticidal compositions comprise a solid or liquid extender or diluent and a compound of formula <FORM:0874570/VI/1> where R is an alkyl radical of 1-4 carbon atoms. Suitable solid diluents are chalk, talc, bentonite and kieselguhr. Suitable liquid formulations are the aqueous emulsions obtained by using auxiliary solvents (e.g. acetone) and an emulsifier.
Patent GB-621122-A (GB)
Title: Improvement in open retaining rings
IPC: F16B21/18
Filed: 1945-12-27
Abstract: 621,122. Circlips. WALDES KOH-I-NOOR fnc., and BROZEK, L. Dec. 27, 1945, No. 35009. [A Specification was laid open to inspection under Sect. 91 of the Acts, July 1, 1946] [Class 89 (ii)] Circlips to be sprung laterally into a groove in a shaft have the inner and outer surfaces 24, Fig. 2, eccentric to increase the flexibility at the ends and enable a clip extending over a longer arc to be used. The outer surface 24 is concentric with the shaft, and the free ends are provided with projections a, b making up the full thickness reduced at 22. The Specification as open to inspection under Sect. 91 describes a modification, Fig. 1 (Cancelled) in which the thickness decreases continuously to the free ends, the inner diameter d<SP>1</SP> being slightly less than that d<SP>2</SP> at the bottom of the groove. This subject-matter does not appear in the Specification as accepted.
Patent GB-1507904-A (GB)
Title: Process for nitriding iron and steel in a salt bath
IPC: C23C8/50
Filed: 1975-08-26
Abstract: The salt bath contains potassium cyanate and/or sodium cyanate and has air flowing through it. Based on the total weight, the salt bath contains 25-57% by weight of cyanate, calculated as cyanate ion and optionally up to 5% by weight of cyanide, calculated as cyanide ion. Regeneration of the salt bath is effected by adding at least one polymeric carbon/nitrogen compound without removing used salts. In general the salt bath additionally contains sodium carbonate and/or potassium carbonate and may also contain alkali metal chloride. The process is environmentally safe, since owing to the small amounts or absence of cyanide, no toxic effluents are produced. The salt melt has a low viscosity, so that drag-out losses can be kept low. Alloyed and non-alloyed steels of any carbon content and iron can be nitrided to form good nitrided layers.
Patent GB-336474-A (GB)
Title: Improvements in cramps
IPC: B23Q3/10
Filed: 1929-11-18
Abstract: 336,474. Lane, E. J. Nov. 18, 1929. Cramps.-A cramp particularly suitable for holding work whilst marking out by a scribing block and surface plate comprises a right-angled V-block a and a detachable bridge piece c engaged by movement in a lateral direction with slots &c. b the work e being held by a clamping screw d carried by the bridge piece.
Patent GB-1464098-A (GB)
Title: Vehicle with an hydraulic braking system
IPC: B60T11/20
Filed: 1973-07-25
Abstract: 1464098 Hydraulic braking systems; master cylinders GIRLING Ltd 3 July 1974 [25 July 1973] 35340/73 Heading F2F An hydraulic vehicle braking system comprises a master cylinder assembly 1 consisting of a pedal operated power valve 2 actuating three parallel tandem hydrostatic master cylinders 3, 4, 5 to provide six independent sources of fluid pressure. The pressure spaces of master cylinder 3 are connected separately to disc brakes 6, 7 on each of the rear wheels of the vehicle; the pressure spaces of cylinder 4 are connected separately to two separate actuators 8, 9 of a disc brake 10 on one front wheel and the pressure spaces of master cylinder 5 are connected separately to two separate actuators 11, 12 of a disc brake 13 on the other front wheel. In the event of failure of the supply of fluid under pressure for valve 2 the pistons of the master cylinders may be applied mechanically. The system may include means to modulate the pressure applied to the brakes from any or all of the master cylinder spaces in the event of a skid.
Patent GB-401124-A (GB)
Title: Improvements in or relating to safety razors
IPC: B26B21/18
Filed: 1932-12-16
Abstract: 401,124. Safety razors. LAWRENCE, G. H., Laurel Works, Nursery Street, Sheffield. Dec. 16, 1932, No. 35646. [Class 30.] In a clamped-blade safety razor in which the flat or curved guard 7 is provided with clearance slots 11 adjacent and parallel to its solid edges 13, both the walls of these slots pass obliquely through the guard so that the outer edges of the slots are nearer the guarding-edges 13 at the upper than at the lower side. This strengthens the solid edges and facilitates the passage of lather. The slots 11 may, as shown, be formed by a milling-cutter 15 entered into the guard 7 from its upper or lower side, before or after curving it, so that the end 16 of the slots are inclined in either desired direction. The rounded upper surface of the guarding- edges 13 may be grooved or indented.
Patent GB-877362-A (GB)
Title: Improvements in and relating to polyalkenyl compounds and polymers thereof
IPC: C08F20/62
Filed: 1959-10-22
Abstract: The Specification comprises polymers and copolymers of polyalkenyl compounds of the formula:  <FORM:0877362/IV (a)/1> where R is X, CH2X, or CH2OH, X is halogen other than fluorine, R1 is hydrogen, methyl or ethyl, z is 3 or 4 and n is 1-6.  A large number of copolymers is specified including olefines, unsaturated acids and their derivatives, ethers and esters of unsaturated alcohols, unsaturated halogen compounds and vinyl amines.  Polymerization is effected in bulk, solution or emulsion with free radical initiators. Copolymers with carboxylic monomers containing 0,001%-5% of the polyalkenyl compound are watersensitive thickening agents and those containing 5%-20% are insoluble cation exchange resins.  The examples describe polymers of tetraallyl methane and copolymers with acrylic and methacrylic acid containing up to 15% of tetraallyl methane; copolymers of acrylic acid with a mixture of compounds obtained by reaction of allyl magnesium bromide and pentaerythrityl bromide and containing tetrabutenyl methane; copolymers of tetraallyl methane and acrylonitrile; terpolymers of tetraallyl methane, maleic anhydride and methyl vinyl ether.ALSO:The Specification comprises compounds of the formula  <FORM:0877362/IV (b)/1> where R is X, CH2X or CH2OH, X is halogen other than fluorine, z is 3 or 4, n is 1 to 6, and R1 is hydrogen methyl or ethyl and a method of preparing such compounds by reacting a compound CR4 with a Grignard reagent of formula XMG(CH2)mCR1 = CH2 in which m is 0 or 1-5 when R is CH2X or CH2OH or m is 1-6 when R is halogen; tetrallyl methane may also be formed from a pentaerythrityl chloride or bromide and vinyl magnesium halide. The Examples describe (1) the reaction of pentaerythrityl tetrabromide and vinyl magnesium bromide to give tetraallyl methane, (2) the reaction of pentaerythrityl bromide and allyl magnesium bromide to give a mixture containing tetrabutenyl methane and having an iodine number indicating an average of slightly more than 3 butenyl groups per molecule, (6) the reaction of carbon tetrabromide with allyl magnesium bromide to give tetraallyl methane.
Patent GB-839899-A (GB)
Title: Improvements relating to electric terminal assemblies
Inventor: BROWN RONALD ERNEST CHARLES
IPC: H01R4/30
Filed: 1957-11-18
Abstract: 839,899. Binding posts; terminal boards and blocks. SIEMENS EDISON SWAN Ltd. Oct. 21, 1958 [Nov. 18, 1957], No. 35856/57. Class 38 (1). In an electric terminal assembly a plastic moulding 1 comprises a shelf 4 supported on base 3 by parts 5 which divide the shelf into sections in which U-shaped spring-clip terminals 6 are clamped by screws 8. Each screw passes freely through aperture 9 in limb 10 of dip 6 and threads into limb 7, portions 11 of which are shaped to receive the screw. A screw 8 passes through a slot in each shelf section. Limb 10 of the clip has a channel cross-section to accommodate spade terminals and burr 14, on its lower face which abuts against the curved end of slot 12 thus preventing movement of the clip. A cover for the assembly having slots for cables may be provided.
Patent GB-399681-A (GB)
Title: Improvements in installations for transferring heat or cold from a source to an exchange surface, such as a floor or wall
IPC: F24D3/14
Filed: 1932-12-19
Abstract: 399,681. Heating by electricity. DERIAZ, W., 16, Rue de Villereuse, Geneva, Switzerland. Dec. 19, 1932, No. 35998. Convention date, Dec. 21, 1931. [Class 39 (iii).] In a heating or cooling installation having a large surface 5 to be heated, such as the floor of a building or vehicle and a small source of heat 3, the transference of heat from the latter to the former takes place through a sheet 1 of good conducting material such as metal stretching across the width of the floor but separated from it by a space 4 of smaller thermal conductivity which is varied in its thickness or conductivity to cause the floor 5 to be heated evenly. The invention may also be applied to an electric hot plate, as shown in Fig. 7, in which the space 4 is an air space and the heating element 3 is backed by plates 28 enclosing heat insulating dead air spaces.
Patent GB-619375-A (GB)
Title: Improvements in or relating to magnetic cores
IPC: H01F41/02
Filed: 1946-12-05
Abstract: 619,375. Making magnetic cores. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Dec. 5, 1946, No. 36011. Convention date, Dec. 15, 1945. Drawings to Specification. [Class 83 (ii)] [Also in Group XXXV] To produce a magnetic core with a predetermined space factor, a coat of resin of predetermined thickness is applied to the surface of magnetic sheet material and the material is wound or otherwise formed into a core which is heated to depolymerize and evaporate the resin, which is such that no carbon is left behind. Polyesters of acrylic acid leave no such deposit, and may be dissolved in a volatile solvent, the application to the magnetic sheet being by dipping, spraying, roll coating or spreading by blades and may be continuous or in patterns over one or both sides. In some cases the resin may be applied in a molten state below the depolymerization temperature. The coating thickness may be determined by rollers between which the sheet passes. After coating the sheet is dried, cut and rolled or otherwise formed into a core and then strain annealed, at a temperature which depolymerizes and evaporates the resin, in a circulation of gas. The core may then be impregnated with a bonding resin such as is described in Specification 553,864, [Group XXXV]. Other coating materials such as polystyrene may be used if the heating is done in a vacuum or inert atmosphere to avoid a carbon deposit. To maintain even spacing of the laminations a powder which is refractory or produces a refractory deposit under heating is suspended in the solution.
Patent GB-914244-A (GB)
Title: Improvements in or relating to dyeing compositions
Inventor: RADLEY JACK AUGUSTUS
Filed: 1959-10-23
Abstract: A powdered or granular dyeing and detergent composition, suitable for use in household washing machines, comprises a mixture of dyestuffs having an affinity for diverse textile fibres and, in an amount sufficient to impart detergent characteristics to the composition, a water-soluble non-ionic synthetic organic detergent which has been caused to assume solid characteristics either (a) by forming a solid concretion product from the detergent and urea, or (b) by the addition of an absorbent solid, such as finely-divided silica, to the detergent. Suitable non-ionic detergents are alkyl- or alkylarylpolyethylene glycol ethers and polyoxyethylene esters of fatty or resin acids.  The composition may also contain an anionic detergent such as an alkylbenzene sulphonate, an optical whitener, a dyeing assistant such as sodium chloride or sulphate and a sequestering agent, such as sodium hexametaphosphate.  The second Provisional Specification refers to the use, in the above powdered or granular composition, of an anionic-, instead of a non-ionic-, detergent.  The first Provisional Specification also describes a paste, as distinct from a powdered or granular composition, which contains one or more dyestuffs together with a liquid non-ionic detergent.ALSO:A powdered or granular dyeing and detergent composition, suitable for use in household washing machines, comprises a mixture of dyestuffs having an affinity for diverse textile fibres, for example, a mixture of water-soluble and water-dispersible dyestuffs, and, in an amount sufficient to impart detergent characteristics to the composition, a water-soluble non-ionic synthetic organic detergent which has been caused to assume solid characteristics either (a) by forming a solid concretion product from the detergent and urea, or (b) by the addition of an absorbent solid, such as finely-divided silica, to the detergent.  Suitable non-ionic detergents are alkyl- or alkylaryl-polyethylene glycol ethers and polyoxyethylene esters of fatty or resin acids.  The composition may also contain an anionic detergent, an optical whitener, a dyeing assistant such as sodium chloride or sulphate and a sequestering agent, such as sodium hexanetaphosphate.  The second Provisional Specification refers to the use, in the above powdered or granular composition, of an anionic-, instead of a non-ionic-, detergent.  The first Provisional Specification also describes a paste, as distinct from a powdered or granular composition, which contains one or more dyestuffs together with a liquid nonionic detergent.
Patent GB-1509325-A (GB)
Title: Self-adhesive envelope
IPC: B65D27/10
Filed: 1975-09-02
Abstract: 1509325 Envelope GOODSTRACK Ltd 19 Aug 1976 [2 Sept 1975] 36030/75 Heading B8K [Also in Division B5] An envelope comprises a front plastics sheet 1 sealed or welded to all edges 4 of a back plastics sheet 2 to define a space therebetween for containing a document, the sheet 2 having a pressure sensitive adhesive 2<SP>1</SP> on its surface remote from sheet 1 and a removable release liner 3 thereover, an insertion opening 7 in the sheet 1 for providing access to the space between the sheets, and a flap 6 extending from an edge adjacent the opening for insertion therein. As described the sheets 1, 2 are of polythene or p.v.c. The flap extends from the front sheet and part of the liner 3 may underlie the flap. Perforations or creases 8 enable the flap to be folded flat. The liner and back sheet may have a slit to aid removal of the liner.
Patent GB-1495186-A (GB)
Title: Electrical solid state devices
IPC: H01L21/033
Filed: 1976-08-11
Abstract: 1495186 Semi-conductor devices PLESSEY CO Ltd 11 Aug 1976 [2 Sept 1975] 36048/75 Heading H1K A semi-conductor device is made by forming a masking film 2 on a substrate 1, covering the film 2 with a photoresist 3, forming a channel in the photoresist 3, etching the masking film 2 in the channel to expose the substrate 1 and to undermine the photoresist 3 and form overhanging portions thereof over exposed marginal portions of the substrate 1, depositing a further masking film 13 to cover the substrate 1 but leaving said exposed marginal portions uncovered, removing the photoresist 3, and subjecting the uncovered marginal portions a treatment such as ion bombardment to form a resistor of dimensions about 1 Á in an I.C.
Patent GB-306871-A (GB)
Title: Improvements in or relating to casement stays and like fasteners
IPC: E05C17/30
Filed: 1927-11-25
Abstract: 306,871. Tonks, W. H., and Sparks, W. Nov. 25, 1927. Divided on 306,596. Stays.-In a telescopic casement stay of the kind in which the window may be opened to a limited degree but may not be fully opened without first closing the window, the stay having an elongated slot with an enlargement for the release of the stay when the window is closed, the said elongated slot is, according to the invention, incorporated in the internal telescopic member. The slot w is formed in the inner member v of the stay to provide, by engagement with the pin 7, secured to the end of the outer telescopic member 8, a restricted opening movement of the window. A plate x is located within the channel member v, having 'a slot with an opening to register with the hole 10 at one end of the slot w. The pin 7 is grooved at 11, and when this groove is level with the top web of the member v the stay can be extended to the limit of the slot w, after which the boss of the stem above the groove may rest on the top of the member x and, in engagement with the opening 12 in the member v, as shown in Fig. 3, to secure the window in the open position. To open the window more fully it is first closed to enable the member 7 to be disengaged through the opening 10; the member 7 is then caused to engage one of the holes 9 in the member v. According to the Provisional Specification, a coupling member may be used to provide for the limited telescopic movement of the stay members.
Patent GB-1196034-A (GB)
Title: Improvements in or relating to Automatic Coin Recognition Arrangements.
IPC: H03K5/22
Filed: 1967-08-07
Abstract: 1196034 Coin recognition SIEMENS AG 7 Aug 1967 [5 Aug 1966 10 Aug 1966] 36105/67 Headings G4V and VP2A1 An automatic coin recognition arrangement scans raised parts of a coin to derive a characteristic electric pulse signal from which the coin is recognized. In a first embodiment, each side of a coin is scanned in a circle by a sensing lever, the waveforms from the two levers being differentiated to produce pulses which are counted. The counts from the two sides are added, the correct sum indicating the coin is genuine. In a second embodiment, the two sensing levers actuate respective microphones each of which feeds a respective transformer having two secondaries which deliver pulse trains representing the positive and negative portions of the input respectively. The "positive" pulse train relating to each side of the coin is compared with two "positive" reference pulse trains, one for each side of the coin. Similar comparisons are done for the "negative" pulse trains. This makes the backto-front orientation of the coin irrelevant. The coin is indicated as valid if, for both sides of the coin, the "positive" train agrees with one of the "positive" reference trains and the "negative" train agrees with one of the "negative" reference trains. Since the sensing levers may not start at a standard position relative to the coin designs, the reference trains are applied repetitively with successive displacements. A third embodiment uses one end of a piece of cable to sense each side of the coin in a "grid", the other end being scanned in a circle and the resulting signals being analysed as in the second embodiment. A fourth embodiment uses such a cable and eight sensing levers for each side of the coin, a transistorized logic circuit looking for a particular pattern of energized and non-energized levers on both sides.