baber/WOPTO huggingface dataset:
Patent GB-847770-A (GB)
Title: Improvements in the purification of dimethylformamide
Inventor: HEWETT JAMES VEITH
IPC: B01J39/04
Filed: 1959-01-28
Abstract: Dimethylformamide which has been used in the dry spinning of polyacrylonitrile and which has had its water content reduced to 0,25% or less is further purified so as to be suitable for re-use in the dry spinning by contacting it with a strong acid cation-exchange resin and a weak base anion-exchange resin, both resins having been colour-conditioned by contact with dimethylformamide until they no longer lose colour to the dimethylformamide.  The resins may be used in separate layers or beds, the cationexchange resin then being preferably used first, or in mixed beds.  Suitable cation-exchange resins are sulphonated phenollformaldehyde and sulphonated polysterene/formaldehyde resins, e.g. having an apparent acidity of pH 3-5 ; and suitable anion-exchange resins are of the nonquaternary polyamine. type, e.g. having an apparent basicity of pH 8-11.  The regeneration of the resins is described.ALSO:Substantially anhydrous impure dimethylformamide is purified by contacting it with a strong acid cation-exchange resin and a weak base anion-exchange resin until it is substantially free from coloured and colour-forming impurities, both resins having previously been colourconditioned by contact with dimethylformamide until they no longer lose coloured constituents to the dimethylformamide.  The resins may be used in separate layers or beds, the cation-exchange resin then being preferably used first, or in mixed beds.  Suitable cation-exchange resins are sulphonated phenol/formaldehyde and sulphonated polystyrene/divinylbenzene resins, e.g., having an apparent acidity of pH 3-5, ; and suitable anion-exchange resins are of the nonquaternary polyamine type, e.g., having an apparent basicity of pH 8-11.  The regeneration of the resins is described.  A suitable dimethylformamide feed comprises dimethylformamide recovered from the dry spinning of polyacrylonitrile. Specifications 472,404 and 595,043 are referred to.
Patent GB-432573-A (GB)
Title: Improvements in and relating to photographic type composing
IPC: B41B13/00
Filed: 1934-01-30
Abstract: 432,573. Photographic type-composing. UHERTYPE AKT.-GES., Glarus, Switzerland. Jan. 30, 1934, No. 3162. Convention date, Jan. 23. [Class 98 (i)] In a process in which letterpress units, e.g. lines provided on a carrier in groups with a constant line spacing are photographed stepby-step to form a page or other complete representation of the letterpress, the carrier is provided with gauging means for each letterpress unit for locating it accurately during the photographing, the gauging means being arranged in vertical alignment along the carrier. The gauging means may comprise one or more rows of holes arranged at one or both ends of the lines of letterpress. In the form shown holes 3, 4, 6 are provided for the letterpress lines, the holes at the right hand end of the lines being elongated to allow of expansion of the lines when the holes are engaged by the pins 5, 7, 8. For the insertion of connections, separate strips may be used provided with means for engaging several of the pins. Larger pieces may also be stuck in by means of strips. During reproduction the carrier is fed only by the gauging means corresponding to the line to be reproduced. Specification 414,705 is referred to.
Patent GB-429899-A (GB)
Title: Improvements in power equalizing devices for four-wheel brakes
IPC: B60T11/06
Filed: 1935-01-31
Abstract: 429,899. Transmitting-mechanism for brakes. WESCHKE, (geb. SOMMER), H., 32, Sternstrasse, Magdeburg, Germany. Jan. 31, 1935, No. 3164. [Class 103 (i)] Equalizing or compensating mechanism for operating the four wheel brakes of vehicles comprises racks k, l, connected one to the front and the other to the rear pair of brakes and engaging a pinion f rigidly connected to a pinion e with which co-operates a rack i connected to the pedal h. As shown the pinions are guided by a sliding block c in which the pinion shaft is journalled and having grooves to receive ribs b on the casing a or a disc running in grooves in the casing may be substituted for the block, or the shaft of the pinions may project through slots in the casing. The ratio of the forces applied to the racks k, l is dependent upon the ratio of the diameters of the pinions e, f, thus, if the pinion e has twice the diameter of pinion f, the force applied to rack l is twice that applied to rack k. The racks k, l, may be connected each to the pair of brakes by a floating bar or equivalent so that the forces applied to the pair are equalized.
Patent GB-224424-A (GB)
Title: Improvements in or relating to cradles or the like for drawbar springs
IPC: B61G9/22
Filed: 1924-02-07
Abstract: 224,424. Cowen, G. P. Feb. 7, 1924. Draw-gear.-In a drawbar cradle built up of end plates and side members, the side members B have the end B<2> bent as hooks to engage in slots A<4> in the end plates, or the ends may be bent at right angles and inserted in radial pockets formed in the sides of the end plates. In a further modification radial depressions are formed on the inner faces of the end plates into which the bent ends of the side members are welded or riveited.
Patent GB-940648-A (GB)
Title: Improvements in or relating to the production of polymeric phosphonitrilic compounds
Inventor: REDFARN CYRIL AUBREY
IPC: C08G8/00
Filed: 1960-01-28
Abstract: 940,648. Laminates. WALKER CHEMICAL CO. Ltd. Jan. 19, 1961 [Jan. 28, 1960], No. 3165/60. Heading B5N. [Also in Division C3] Resins formed by heating polyhydroxy aromatic compounds with alkoxylated phosphonitrilic compounds (see Division C3) are used to impregnate fibrous materials for preparing laminates. In Example 8 an aqueous solution of a condensate of hydroquinone and methoxylated phosphonitrile with hexamethylene tetramine as hardener is used to impregnate asbestos felt which is then dried; six 8 inches by 1 inch strips are then laid up and pressed at 700 p.s.i. for 30 minutes at 280‹ C. In Example 9, a similar procedure is used with glass cloth. Specifications 807,851 and 812,126 are referred to.
Patent GB-1515322-A (GB)
Title: Registration apparatus for use with or incorporation in a machine which has relatively movable parts such as a line printer
IPC: G06K15/08
Filed: 1975-05-22
Abstract: 1515322 Registration apparatus CENTRONICS DATA COMPUTER CORP 22 May 1975 [5 June 1974] 03223/78 Divided out of 1515321 Heading G4H [Also in Division G1] Registration apparatus for use with or in corporation in a machine which has two relatively movable parts (e.g. a printer), comprises: an elongate registration strip having uniformly spaced transverse slits through which light can pass; means for mounting the strip on one of the parts of the machine; a housing 145 and means for mounting it on the other part, the housing having a slot 137<SP>1</SP> to receive the strip, first and second pairs of chambers on opposite sides of the slot, each chamber having a respective opening on to the slot, the opening of one of each pair being of restricted width such that light can pass from one of each pair of chambers through only one at a time of the slits to the other chamber of the pair; a respective light source 136 in one chamber of each pair and a respective photodetector means 140 in the other chamber of each pair, whereby each photodetector means produces a respective one of two series of pulses in use when the slit is moved through the slot; the relationship of the two openings of restricted width to the slits being such that a phase difference exists between the two series of pulses enabling detection of the direction of movement of the strip through the slot. The strip may contain two staggered rows of slits, the two openings of restricted width being in alignment with each other (Figs. 2k and 2n, not shown).
Patent GB-471055-A (GB)
Title: Improvements in fluid-pressure operated single stroke piston apparatus
IPC: F04B9/14
Filed: 1936-02-03
Abstract: 471,055. Pneumatic single - stroke apparatus. MERZ, F. Feb. 3, 1936, No. 3255. (Class 8 (ii)] [Also in Group XXVI] A piston device 4 operated by pressure-fluid transmits motion to an external element by an arm 6 which passes through a longitudinal slit 3 in the cylinder controlled by a closing strip which in its normal position closes the slit over the whole cylinder length. The strip is lifted from the slit by the arm and returned to its seat only on the length comprised between the piston heads. In the construction shown in Fig. 2a, a flexible metal sheet cylinder is slit along a generatrix, and the arm 6 is bent to pass between the opposing flanges of the slit. The pressure in the cylinder and the resiliency of the material closes the gap on either side of the arm 6. In a modification, the flanges of the slit are radial, and the suction in the cylinder which operates the piston in this case helps to close the gap. In the construction shown in Fig. 4a, the cylinder has a slot of constant width and houses a thin cylinder 8 with a slot along a different generatrix. The arm 6 is shaped to pass through both cylinders. In the construction shown in Fig. 5a the slit is closed by a band which passes through the rod. In a modification of this construction, the resilient band is U-shaped. In a further modification, resilient split rings, housed in annular grooves in the cylinder, have ends which engage the band to hold it in place. The free ends of each ring press the band on its seat.
Patent GB-607391-A (GB)
Title: Stable dispersions of secondary aromatic amines
IPC: C09K23/00
Filed: 1946-02-01
Abstract: A process of preparing aqueous dispersions of secondary aromatic amines useful as anti-oxidants for rubber and synthetic rubber, wherein the amine is dispersed in water by means of a dispersing agent, includes the step of incorporating in such aqueous dispersions, before dispersion is complete, from 0.1 to 10 per cent of lecithin based on the weight of amine to improve the stability. The lecithin is preferably added during the manufacture or flaking process, but may be added during the preparation of the dispersion with subsequent milling.  The secondary aromatic amines contains at least one NH- group attached to two aromatic rings which may contain non-functional substituents, such as phenyl, benzyl, methyl, methoxy, phenoxy, and chlorine; examples quoted are: diphenyl amine, dinaphthyl amine, diphenyl-p-phenylene diamine, dinaphthyl-p-phenylene diamine, p-benzyl, p-phenyl, or o-methyl diphenyl amine, p-p1-dichloro-, p-methoxy, or p-isopropoxy diphenyl amine, and ditolyl amine.  The preferred dispersing agents are the soluble salts of sulphonated naphthalene compounds, but others such as sodium salts of sulphonated fatty alcohols of 12-14 carbon atoms, or other alcohols or mixtures of the same, purified sulpholignins, and the sodium salts of aliphatic sulphonates of petroleum hydrocarbons, or the like may be used.  Comparative figures are tabled showing increased dispersion stability given by lecithin, but the improvement is not shown if the lecithin is replaced by dispersion agent.  In the preferred process the amine is melted and 1 per cent of lecithin added and the melt is flaked on a drum flaker, the flaked material is made into an aqueous dispersion with the preferred dispersing agent and this mixture is ground in a Charlotte Colloid mill for 20 minutes.
Patent GB-1490773-A (GB)
Title: Encapsulated shaped parts to be subjected to isostatic compression and process for their manufacture
IPC: B22F3/12
Filed: 1975-01-24
Abstract: 1490773 Coating powder compacts prior to isostatic compaction FRIED KRUPP GmbH 24 Jan 1975 [25 Jan 1974] 3267/75 Headings C7D and C7F Prior to the isostatic compaction of powdered material, the material is compressed, outgassed, and encapsulated, e.g. by sputtering or, preferably, vapour deposition. The materials forming the compressed body and the capsule are chosen from metals, metal oxides, borides, carbides, nitrides and silicides, and non-metallic oxides, carbides and nitrides e.g. SiO 2 , Si 3 N 4 , and B 4 C. The thickness of the capsule is 1-500 Ám, the powdered material is 5-200 Ám and compaction pressure may be 1-16 Mp/cm<SP>2</SP>. Outgassing is effected at 900- 1000C in a vacuum of 10<SP>-4</SP>-10<SP>-6</SP> Torr. The compressed body may be heated to 600-1200C during vapour deposition, which is effected at 10<SP>-3</SP> to 10<SP>-5</SP> Torr. In Examples, a Ni-based superalloy (also containing Cr, Co, Mo, Al, Ti)Àis encapsulated with Fe-Ni (50:50), and Fe with Fe.
Patent GB-104539-A (GB)
Title: Improvements in or relating to Bombs, Hand and Rifle Grenades and the like.
Inventor: PRESTWICH JOHN ALFRED
IPC: F42B30/04
Filed: 1916-03-07
Abstract: 104,539. Prestwich, J. A. March 7, 1916. Projectiles; projectile fuses.-Relates to bombs provided with a spring striker which is released by a movable tumbler to explode the bomb on impact. According to the invention, a sliding spring striker is held cocked by a projecting toe at one end of the tumbler, which is locked at the other end until the bomb is discharged or thrown. In the form shown in Fig. 4, the sliding spring striker c is held cocked by the undercut toe h<1> of a rod h<3>, over which a weight h is arranged between a spring q and a nut h<0>; and the rod h<3> is locked by a plunger r held in by an external lever t, which is itself locked by a cotter pin t<1>, preferably through the intermediary of a spring bolt t<2>. When the cotter pin is removed and the grenade thrown, the spring s of the plunger t throws the lever off and withdraws the plunger from the rod h<3>. This release may be delayed by a dash-pot. On impact, the displacement of the rod h<3>, under the direct shock or the shock due to the rebound of the spring-cushioned weight h, releases the spring striker c, which fires a percussion cap d leading to a detonator tube e; a time-fuse may be interposed between the percussion cap and the detonator. In modifications, the spring-cushioned weight h is dispensed with, the action depending wholly on the inertia of the tumbler h<3>, and this tumbler is released (1) by a winged screw, which is released by an inertia bolt on discharge and is unscrewed by the air during the flight of the projectile, or (2) by a screw which is removed by hand, or (3) by a sleeve which sets back when the projectile is discharged, or (4) by a time-fuse which is ignited by the set-back of a small pellet when the projectile is discharged.
Patent GB-692735-A (GB)
Title: Escutcheon fixing means
IPC: A47F5/00
Filed: 1951-02-13
Abstract: 692,735. Cabinet fittings. COLE, Ltd., E. K., and WHITE, J. K. Feb. 13, 1952 [Feb- 13, 1951], No. 3437/51. Class 52(i) [Also in Groups XXXII, XL(b), and XL(c)] An escutcheon of moulded plastic material for the aperture in a panel, more particularly the aperture in the front of the cabinet of a radio or television set and provided for the tuning dial or cathode ray tube has a front flange and an inwardly projecting wall the latter being provided with lugs suitable for engaging clips secured to the back of the panel and adapted to press the flange against the panel. This method of attachment permits the flange to be narrower and avoids the mark on the front face of the escutcheon 2 caused in the prior arrangement (Fig. 1) by the enlarged part 3 to which the clip 4 is screwed, since the lugs 7, Fig. 4, on the new escutcheon need only be small, the screw being screwed into the. cabinet 1. The lugs may be provided in the original moulding or formed by making saw cuts in ribs extending from the front flange Figs. 2 and 3 (not shown). The clips are resilient and reduce the damage which might be caused by implosion of the cathode ray tube.
Patent GB-1492684-A (GB)
Title: Polyolefin ribbon yarn fabrics
IPC: D03D15/02
Filed: 1975-01-27
Abstract: 1492684 Woven fabric STANDARD OIL CO 27 Jan 1975 [31 Jan 1974] 3440/75 Heading D1K A woven fabric comprises polyolefine ribbon warps e.g. polyethylene or polypropylene and napped spun yarn wefts arranged on average at at least one pick in ten. The spun yarns may be of the same material as the ribbons or of polyamide or natural fibres. Intermediate wefts may be the same as the warps.
Patent GB-1057106-A (GB)
Title: A method of manufacturing changing pictures animated or in relief
IPC: G03B35/24
Filed: 1964-01-27
Abstract: 1,57,106. Manufacturing changing pictures; stereograms. G. MENGDEN. Jan. 27, 1964 [Jan. 26, 1963], No.3445/64. Headings G2E and G2J. In a method of manufacturing changing pictures, animated or in relief, of the kind in which a line drawing is viewed through a lenticular screen in contact, a thermoplastic transparent sheet 10 is heated by the application of a high frequency alternating electric field using electrode 6, and the sheet is then simultaneously welded to the drawing 4 in a press whose upper plate comprises a lenticular matrix 5 which embosses the required screen on the opposite face of the sheet 10. The drawings 4 may be on separate sheets of paper accurately located by pins 2, 3 on the bed 1 of the press. In variations, the drawings 4 may be carried on a metal belt carrying locating pins, or again, a continuous band of paper is used printed at intervals with drawings. The electrode and die are held at a constant temperature. Sheet 10 may be of polyvinylchloride &c.
Patent GB-1088496-A (GB)
Title: Process for the production of condensation products from dihydric phenolic compounds and epihalohydrins
IPC: C08G59/06
Filed: 1965-01-27
Abstract: A process for the production of a condensation product from a dihydric phenol and an epihalohydrin comprises reacting them in the presence of at least one mol. of an alkaline condensation agent per mol. of dihydric phenol, in the presence of an emulsifier and/or a protective colloid and in the presence of a solvent miscible with water and water.  The phenol and epihalohydrin may be reacted in equimolar proportions until the desired molecular weight is obtained when the product is reacted with further epihalohydrin. The epoxy containing products may be reacted, without isolation, with compounds of the formula NHR1R11, where R1 and R11 are H, alkyl, aryl, cycloalkyl, hydroxyalkyl, mercaptoalkyl or aminoalkyl radicals. Emulsifiers specified are: adducts of epoxides with glycols or diamines, fatty, aliphatic sulphonic or alkyl-aromatic sulphonic acid salts; protective colloids are starch and cellulose derivatives, polyvinyl alcohol and polyethylene oxides; and water-miscible solvents are alcohols and ketones. The products are obtained as a powder or as small beads.
Patent GB-179276-A (GB)
Title: Improvements in and relating to aerofoils for aeroplanes
IPC: B64C3/54
Filed: 1921-02-01
Abstract: 179,276. Kolle, A. A. Feb. 1, 1921. Planes, construction of; steering, balancing, and regulating altitude.-Small auxiliary wings, or " winglets," mounted on the leading edge of a plane and movable upwards and forwards, have their tips slightly behind the leading edge and a portion of their front edge in conformity with and shaped to fit round the leading edge of the plane. A winglet 1 is shown in its open position in Figs. 6 and 9, which are sections on aa and dd, Fig. 1. The winglet is mounted on a pivot 7, which may, however, be inclined to the plane of the Figures to give the winglet rotation about its longitudinal axis when moved upwards and forwards. The aerofoil may be so shaped that, when the winglets are closed, its contour is preserved, and when they are raised the part under them runs fair into the part of the wing to the rear. The front edges 8 and the rear edges 10 may be of rubber or like flexible material, and a flexible membrane 12 may form a seal at their pivoted end. The winglets may be controlled through arms 11 by the mechanism described in Specification 166,814.
Patent GB-607491-A (GB)
Title: Improvements in valve spring compressors
IPC: B25B27/26
Filed: 1946-02-06
Abstract: 607,491. Valve spring compressors. BALL, E. E. Feb 6, 1946, No. 3763. [Class 61 (ii)] A valve spring compressor has a yoke 4 in which a hand wheel 5 is journalled. A screw-threaded rod 9 screws into the hand wheel 5 which on rotation moves a valve spring support 11 secured by a bifurcated portion 10 to the rod 9. The yoke 4 has two arms 14 pivoted at 15 which pass through slots in extensions 20 of the spring support 11, the shape of the arms 14 causing their clawends 16 to move in to engage the spring 17 when the spring support 11 is moved by the hand wheel 5. Further movement of the spring support 11 compresses the spring 17 and frees the cotters 19 which may then be removed. A hole in the valve spring support 11 allows the valve stem 18 to pass through.
Patent GB-796324-A (GB)
Title: Improvements in or relating to waste traps
IPC: E03C1/282
Filed: 1954-02-09
Abstract: 796,324. Sink &c. traps. DONALD, P. G., DONALD, B. G., and ASSOCIATED BUILDERS MERCHANTS, Ltd. Feb. 2, 1955 [Feb. 9, 1954], No. 3810/54. Class 33. A waste trap for sinks &c. comprises a tapered hollow body 1 divided by a partition 4 into an inlet chamber 5 and outlet chamber 6, a cap member 17 closing the lower opening 3 beneath the partition, and a bridge-piece 14 extending across the inlet chamber 5 and threaded at 15 so that the trap can be secured to a sink outlet by a bolt passing through the sink waste grid. The trap may be injection moulded from polythene, the bridge-piece 14 and a stiffening ring 13 being of metal ; a plastic covering 14a for the bridge-piece has its lower face formed against a tongue-like moulding core which is then withdrawn downwardly through the opening 3 leaving ramp-like ridges 40 on the trap wall.
Patent GB-1058333-A (GB)
Title: Improvements in or relating to toy weapons
IPC: F41A9/83
Filed: 1965-01-29
Abstract: 1,058,333. Toy guns. G. FERRI and J. MARINAI. Jan. 29, 1965 [Feb. 1, 1964; Nov. 28, 1964], No. 3938/65. Heading A6S. An explosive cup capsule loader and container for a toy weapon has a pair of guide rails between which a capsule is inserted and retained to be subsequently urged rectilinearly into a weapon chamber. The container 21 is provided with a spring loaded slide 23 which upon withdrawal may successively eject capsules C2 to a loading position C3. In such a position of the slide 23 a further Cl is prevented from passing out of the container 21. The space between the guide rails 26 is made slightly smaller than the diameter of the capsule so that it is retained therebetween until pushed into the weapon chamber. Three embodiments are shown, the other two of which have horizontal containers.
Patent GB-260469-A (GB)
Title: Improvements in or relating to the driving mechanism for spools, cops and the like in yarn or thread winding machines
IPC: B65H54/42
Filed: 1926-02-11
Abstract: 260,469. Haddan, R., (Schlafhorst & Co., W.). Feb. 11, 1926. Winding-machines.-In a machine for winding yarns wherein the spool-driving means and thread guides are independently operated, the shaft for driving the cops or spools consists of a series of sections a<1>, a<2>, a<3>, Fig. 2, connected end-to-end by flexible or elastic couplings g. Each shaft section has bearings c, d near its ends supported by a bracket e from a rail f, and the couplings comprise pihs h engaging in recesses i, Fig. 3. Alternatively, holes are substituted for the recesses i. To enable one section to be taken out without removing the others, the pins h, Fig. 5, or a plate m, Fig. 6, are adapted to engage in a diametrical slot k. The pins h and plate m are designed so as to break if the shaft is overloaded. The plate m may be formed with a tongue. In a further modification, plate couplings r, r<1>, Fig. 9, having projecting studs s, s', are connected to the ends of the shaft sections, the studs engaging in holes in a pad w of leather or rubber. To facilitate removal of one section, the coupling-plates may be screwed on to the threaded ends of the shaft sections.