baber/WOPTO huggingface dataset:
Patent GB-1392376-A (GB)
Title: Sampling and holding circuits
IPC: G11C27/02
Filed: 1972-08-04
Abstract: 1392376 Electric analogue calculating LICENTIA PATENT-VERWALTUNGS-GmbH 4 Aug 1972 [11 Aug 1971] 36478/72 Heading G4G A sample-and-hold circuit in which a voltage representative of an input signal U1 has to be stored in a capacitor C for a period of time comprises a comparator K which receives as inputs the input signal U1 and (via buffer amplifier V) the voltage stored on capacitor C, the comparator controlling through logic circuit L two current sources I 2 , I 3  which charge capacitor C in such a way as to make the inputs to comparator K equal. The sample-and-hold sequence is determined by gating signals t ab  and t H . The output signal U3 is taken from terminals T1, T2.
Patent GB-1036957-A (GB)
Title: Improvements in or relating to the production of unsaturated aliphatic carboxylic acids
Inventor: BROWN CHRISTOPHER JOHN
IPC: C07C57/055
Filed: 1964-09-05
Abstract: Acrylic acid is prepared by reacting acrolein in admixture with acrylic acid in the vapour phase at an elevated temperature over an oxidation catalyst in a reactor of stainless steel or iron or an iron alloy which has been made inert by a chemical treatment. The acrolein may have been prepared by reacting propylene with molecular oxygen in the vapour phase over an oxide composition containing antimony and vanadium alone or with one or more polyvalent metals such as titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc, molybdenum, cadmium, tungsten, thorium and tin, and the mixed product is reacted over the oxidation catalyst.  The oxidation catalyst comprises a molybdate of bismuth, cobalt, tin, vanadium, iron, antimony, cesium, titanium, nickel, tungsten or bismuth phospho-molybdate.  The inert layer on the iron or iron alloy comprises a metal phosphate and is obtained by treating the surface with a solution containing phosphoric acid, ammonium phosphate, iron, manganese, zinc or cadmium phosphates, or alternatively an antimony layer formed by the treatment of the surfaces with a hot alkaline solution of an anti-mony salt.
Patent GB-1016184-A (GB)
Title: An improvement in or relating to haulage devices
IPC: B66D5/32
Filed: 1962-09-27
Abstract: 1,016,184. Chain stops; hand winches. A. F. WHINFREY. Aug. 23, 1963 [Sept. 27, 1962; Dec. 6, 1962], Nos. 36640/62 and 46083/62. Heading B8B. A haulage device for a chain 26, Fig. 1, comprises a ratchet wheel 42 operating in conjunction with a chain-stop gate 30 pivoted on an axis 32 in a plane at right-angles to the chain. The gate 30 has a slot 66 to accommodate alternate links of the chain and is urged against a stop 22 by an adjustable tension spring 40. A pinion 46 in the ratchet wheel drive is normally held against return movements by a catch 50 which may be released by a lever arm 58 acting against a return spring 52.
Patent GB-327953-A (GB)
Title: Improvements in or relating to carburettors
IPC: F02M1/04
Filed: 1928-12-13
Abstract: 327,953. Wade, H., (Graflich Schaffgotsch'sche Werke Ges.). Dec. 13, 1928. Spray carburettors.-Relates to carburettors having a suction-actuated double valve member for regulating and cutting off the supply of fuel. The member comprises an inner valve, for controlling the idling fuel supply, which is guided in and adapted to seat upon the outer valve which controls the normal supply of fuel. According to the invention, the double valve is located in a removable casing arranged across and at right angles to the mixing chamber, and the suction is transmitted thereto through a duct which supplies mixture for idling and fresh air alone for normal running. A casing 1, Fig. 1, secured by a cap 3 contains the double valve comprising an idling valve 8, Figs. 1 and 4, and a main valve 4, the valves being provided with flanges 9, 7 respectively adapted to be acted unon by suction transmitted through a duct 13. The main valve controls the duct 6 and itself has a duct 10 controlled by the valve 8. A bye-pass 47 controlled by a screw 46 leads from duct 13 to the engine side of the throttle valve 14, and an air inlet 16 controlled by a screw 17 is adapted to be covered by the throttle in its closed position. Fig. 4 shows the valve 8 ifted for idle running, air entering through ports 11. For normal running the valve 4 is lifted to open passage 6 and close passage 10, fuel then issuing into the mixing chamber through ports 15. At the same time, atmospheric air enters through ducts 1<a>, Figs. 2, 4 and passes to the mixing chamber by way of ducts 13, 47. Con. densed fuel collects in an annular channel 49 and may be conveyed to the engine side of the throttle valve through ducts 50, 51 adapted to be controlled by a screw 52. Primary air is admitted and controlled by a rotatable ported valve 18, the ports 19 in which are smaller than the ports 20 in the casing 21. Two or more holes 25 in valve 18 are adapted to register with ducts 26, 27, Figs. 1, 2, to admit extra air after the ports 19 have been fully uncovered. An additional atomizing device comprises a cylinder 38 at right angles to the casing 1, with a perforated end 39. The air velocity in the vicinity of the casing is regulated by screws 28, Fig. 2. To facilitate starting, a spring-loaded valve 30 in a passage 29, Fig. 1, is adapted to be opened from the driving position. Fuel is supplied at 37 through a strainer 36 to a sleeve 33 the bore of which may be regulated by a screw 34.
Patent GB-505551-A (GB)
Title: Heat insulating handle for micrometers, calliper gauges, and similar measuring tools
IPC: G01B3/18
Filed: 1938-12-19
Abstract: 505,551. Linear - dimension gauges. AKTIEBOLAGET C. E. JOHANSSON. Dec. 19,1938, No. 36960. Convention date, Jan. 15. [Class 106 (ii)] Micrometers, calliper gauges, &c. are insulated from the warmth of the hand when in use by an insulating handle piece formed by a spring clamp 4 of ebonite or the material known under the Registered Trade Mark " Bakelite. " preferably of U-section which is pushed on to that part of the gauge held in the hand. The inside surfaces of the grip 4 are provided with ridges 5 which bear against the gauge thus forming insulating airspaces 6, 8, between the gauge and spring grip.
Patent GB-1434397-A (GB)
Title: Pipe-making apparatus
IPC: B28B21/82
Filed: 1973-08-04
Abstract: 1434397 Pipe moulding machine JOHN FINLAY (ENG) Ltd 4 Aug 1973 37143/73 Heading B5A [Also in Division B8] A plurality of concrete pipes are cast between cores 24 (Fig. 1) and female moulds 17 that are moved vertically to an in-use position in which they co-operate to define respective moulding spaces. The lower ends of the moulding spaces are closed by first rings 40 (Fig. 5A) mounted on a common pallet 28 positioned on a surface 11  (Fig. 1), and the upper end of each space is closed after casting by a second ring. As described for moulding four pipes simultaneously, a supporting frame 10 is mounted in a pit with the surface 11 at ground level. A pallet 28 (Fig. 5A) supporting four first rings 40 is moved along a pair of stepped rails 32 by a stepped trolley 34 having wheels engaging the rails 32 (see Fig. 5B, not shown), until the pallet rings are vertically aligned with the separated cores 24 (Fig. 1) and moulds 17. The trolley 34 (Fig. 5A) activates limit switches to cause the cores 24 (Fig. 1) to move upwards through the rings 40 to an in-use position above the surface 11, and the moulds 45 to move downwards to define the moulding spaces. A feed box (58) (see Fig. 2, not shown) runs on wheels engaging channels 30 from beneath a hopper 60 to cast the concrete, which is kept stirred by feed box spinners. The moulds 17 are simultaneously vibrated by vibrators 22. The second rings are moved downwards to close each moulding space, and are rotated by ring support pipes 45 reciprocated about their vertical axes through 60 degrees, by pivoted links (see Fig. 3B, not shown). The moulds 17, second rings, and cores 24 are moved successively to out-of-use positions upwards and downwards respectively, and the trolley 34 (Fig. 5A) is reciprocated to push the pipe-supporting pallet away and replace it with an empty pallet. The full pallet is engaged by lifting arms (64) (see Fig. 6, not shown) of an inverted-U-frame that moves on rails to transport away the formed pipes. The moulds 17 comprise tubes mounted in a sub-frame 18 (Fig. 1) sliding on runners 20 and separated from the supporting frame 10 by shock absorbers 29. The cores 24 comprise closed tubes surrounding vibrators and sliding on vertical runners via shock absorbers. The pallets 28 (Fig. 5A) are supplied from a magazine 27.
Patent GB-891276-A (GB)
Title: Process for the manufacture of potassium fluoride, hydrogen fluoride and silica from potassium fluosilicate
IPC: C01B33/18
Filed: 1960-10-28
Abstract: Potassium fluoride, hydrogen fluoride and silica are produced by reacting potassium fluosilicate with ammonia and water to obtain an aqueous solution of potassium fluoride and ammonium fluoride and a precipitate of silica in a first step, mixing the solution, after removal of the silica, with an amount of potassium fluoride substantially equal to that contained in the solution, concentrating the solution to obtain a precipitate of acid potassium fluoride and evaporate the ammonia in a second step, and decomposing the acid potassium fluoride by heat to yield potassium fluoride and hydrogen fluoride in a third step.  In Example 1, gaseous ammonia is introduced into an aqueous suspension of potassium fluosilicate (obtained by reacting effluents from superphosphate manufacture with KCl), the temperature rising to 70 DEG -90 DEG C.  The reaction liquor is decanted from undecomposed potassium fluosilicate, which is recycled to the next batch, and is filtered to remove suspended silica, which is washed with hot water.  The filtrate containing KF and NH4F is mixed with a quantity of KF equal to that of the contained KF and is evaporated to dryness to drive off the ammonia, which is recycled to the next batch.  The residue, acid potassium fluoride, is heated to 500 DEG C. to drive off anhydrous HF, which is recovered as such or by absorption in water or in solid alkali fluoride.  Half of the KF residue is withdrawn as final product, while the other half is recycled to step (2).  In Example 2, aqueous ammonia is gradually added to an aqueous suspension of potassium fluosilicate heated to 80 DEG C., and the process is continued as in Example 1. Specification 765,901 is referred to.
Patent GB-1169205-A (GB)
Title: Improvements in or relating to Brake Adjuster Mechanisms
Inventor: NEWSTEAD CHARLES
IPC: F16D65/52
Filed: 1966-08-19
Abstract: 1,169,205. Internal shoe drum brakes. GIRLING Ltd. 9 Aug., 1967 [19 Aug., 1966], No. 37301/66. Heading F2E. In an automatic adjuster, particularly for installation in an existing vehicle having a manual adjusting spindle protruding or accessible through the brake back plate, a unidirectional drive includes a driven rotary member (such as a ratchet wheel 22) arranged to be located on the adjusting spindle for rotation therewith, the rotary member (22) arranged to be driven (e.g. by a pawl 24) in accordance with movement of a brake shoe and means to disconnect the uni-directional drive to facilitate manual adjustment. The amount of adjustment required may be determined in dependence on the amount of shoe movement during application or release of the brake by a movement-amplifying lever (Figs. 1 to 3, not shown), coupled by a flexible cable to a pull-rod 26. Alternatively, in a brake having a rotatable actuator 52, Fig. 12, a cam 51 and follower 53 may be coupled to the flexible cable by a lever 54. A ramp 28, Fig. 4, lifts the pawl 24 from the ratchet 22 so as to limit each adjusting step to one tooth. The ramp 28 also disconnects the pawl 24 from the ratchet 22 when the manual adjusting spindle is reset during the installation of new brake linings. In Fig. 7, the manual adjusting spindle 23 is normally covered by a lever 36, pivoted at 33, clockwise movement of which is necessary to give access to the spindle 23. This movement actuates a plunger 31 which releases the pawl 24 from the ratchet 22. In Fig. 11, the ratchet. 22 has an extension 22B having a helical slot 43 containing pins 46 of a cup 44 carried by the manual adjusting spindle 23. Rotation of the end 47 of the cup 44 to permit manual adjustment, displaces the cup 44 to the left so that a pawl follower 49 disengages the pawl from the ratchet 22. In Fig. 10 (not shown), the end of a spring-biased pawl remote from the ratchet is arranged to contact an abutment on the lever and so disconnect it from the ratchet during excessive movement.
Patent GB-1496637-A (GB)
Title: Processes and apparatus for treating meat
IPC: A22C17/00
Filed: 1976-09-09
Abstract: 1496637 Treating meat FOLDENAUER EQUIPMENT CO INC 9 Sept 1976 [15 Sept 1975] 37317/76 Heading A2U Meat, including poultry, pieces are introduced into a drum, containing groups of teeth, which is rotated about a substantially horizontal axis so that the meat is tumbled by being repeatedly raised above the horizontal axis and then dropped onto the teeth, the integrity of the pieces being substantially maintained, whereby a mass of small cuts is formed on the surfaces of the meat, thereby increasing exposure of myosin protein on the surface. When such pieces are pressed and cooked in a mould or plastic bag they will adhere to each other and are readily sliced without separating. Further, the colour of the cooked meat is uniform. The drum is preferably rotated at 12-24 RPM for 10-30 minutes, and the cuts produced are preferably 1/16 inch or less. A suitable apparatus comprises a drum 22 mounted on a horizontal axis and having a sliding door 54 in its side. The rods 122 are preferably fixed and the rods 116 rotatable. Rods 122 having a rolled thread with a portion milled away provide the teeth, and smooth rods 116 assist in the tumbling action. The drum may contain a pickling liquor in addition to the meat pieces 50, or may be subjected to reduced pressure vacuum line 138, a baffle 140 being provided within the drum over the entrance of this line to prevent the line becoming blocked by meat pieces. The door 54 slides in runners 66, and consists of two plates 56 and 60. By means of lever 74 acting on a threaded stud 72 joining the two plates, the plates may be brought together or forced apart, whereby in the former case the door is free to slide, and in the latter case the door is sealed, by the portions 64 bearing against the runners and the edges of the plate 56, reinforced at 68, pressing against the edges of the opening in the drum, thus sealing the drum.
Patent GB-326267-A (GB)
Title: Improvements in friction elements for brakes, clutches and the like
IPC: F16D69/02
Filed: 1928-12-19
Abstract: 326,267. Robertson, J. H. Dec. 19, 1928. Energy-absorbing elements.-In a friction element for brakes, clutches, friction gears, &c., comprising fibrous material impregnated with a binder, the fibrous material extends substantially at right angles to the wearing surface of the element, which presents the cords or films in cross-section separated by polygonal or stellate sections of binding material. The impregnated cords or fibres may be wound into rope form by means of a perforated card, similar to that used in making ropes, the card being mounted on a hub or shaft. Transverse sections of the rope may be used for circular brake linings, clutch plates, &c., and for annular linings the disc is punched out at the centre. For frusto-conical or cylindrical brake or clutch linings, the punchedout annuli may be pressed to shape before the final hardening of the binder. The fibrous material may be wound to any size, and iron filings, graphite, talc, &c, may be added to the composition. Specifications 7101/88, and 306,752, [Class 80 (ii), Gearing, Variable-speed, &c.], are referred to.
Patent GB-1175880-A (GB)
Title: Method of and apparatus for sizing and drying warps of man-made filament yarns
IPC: D06B23/06
Filed: 1967-08-16
Abstract: 1,175,880. Treating warp yarn. KAWAMOTO INDUSTRIEL CO. Ltd. 16 Aug., 1967 [24 Aug., 1966], No. 37752/67. Heading D1L. [Also in Division F4] A supply of warp yarn for a single piece of fabric is unwound from warp beams 1 to form two sheets which are combined into a single sheet, sized in a bath 2, again divided, passed through a hot air drying chamber 3 (see Division F4), again combined, optionally further dried over a heated drum 17, waxed by a waxing roller 137, again divided in a beaming section 4, combined again, and wound up on a loom beam c.
Patent GB-369215-A (GB)
Title: A process of hydrolysing cellulose acetate
IPC: C08B3/24
Filed: 1930-12-15
Abstract: Comprises the hydrolysis of fibrous or precipitated cellulose triacetate in presence of a solvent mixture of ethylene dichloride and an organic acid, preferably acetic acid.  Ethylene chloride may constitute 75 per cent or more of the solvent mixture, but should be at least 25 per cent of the acetic acid.  Hydrolysis is preferably conducted at a temperature of approximately 50 DEG  C. for 18-24 hours.  Suitable hydrolysing agents comprise alcohol or water and the usual acid or other catalyst.  After hydrolysis, the solution is immersed in or preferably extruded into a hot precipitating medium, e.g. water, which is kept at a temperature well above the boiling point of ethylene chloride, whereas the latter is flashed out from the solution and the cellulose acetate is precipitated in a light, fluffy form and can be readily washed and dried.  The ethylene chloride is recovered by suitable collecting and condensing means. In an example, 88 parts of fibrous or precipitated cellulose triacetate is dissolved in a bath containing 234 parts glacial acetic acid, 312 parts ethylene chloride, 26 parts water, 23 parts sodium acid sulphate monohydrate, 0,9 parts sulphuric acid, and 2,7 parts phosphoric acid; the solution is kept at 50 DEG  C. for 18-22 hours, and the cellulose acetate is then precipitated in hot water. Specifications 337,366, [Class 2 (ii), Cellulose &c.], and 356,012, are referred to.  The Specification as open to inspection under Sect. 91 (3) (a) refers also to hydrolysis applied directly to acetylation baths. This subject-matter does not appear in the Specification as accepted.
Patent GB-1299763-A (GB)
Title: Timber preservation composition
Inventor: RICHARDSON STANLEY ARTHUR
IPC: B27K3/50
Filed: 1970-08-05
Abstract: 1299763 Timber preservation composition RICHARDSON & STARLING Ltd 5 Aug 1971 [5 Aug 1970] 37868/70 Addition to 1253542 Heading ASE  A timber preservative in the form of an emulsion comprises a solution of at least one fungicide and at least one insecticide in an organic solvent, which solution is dispersed in water, the proportion of water being 58.2% to 60% by weight of the preservative. Suitable active ingredients are chloronaphthalene wax, gamma BHC, orthophenylphenol and tri-nbutyltin oxide.
Patent GB-864889-A (GB)
Title: Process for preparing linear polyureas
Inventor: INABA YANOSUKE
IPC: C08L75/02
Filed: 1958-11-25
Abstract: A process for preparing linear polyureas comprises dissolving in water reactants comprising an alkylene diamine and a urea compound comprising urea, methylene bis-urea or ethylene bis-urea, together with a viscosity stabilizer comprising an alkyl monoamide the alkyl radical of which contains at least 3 carbon atoms or an N-acyl alkylene diamine the alkyl radical of which contains at least three carbon atoms or an N-acyl alkylene diamine the alkyl radical of which contains at least three carbon atoms, heating the resulting solution at a temperature of less than 130 DEG C. until the reactants are converted into an omega-amino alkylene urea, and heating the resulting reaction mass at a temperature higher than 130 DEG C. until a product is formed which can be spun into fibres.  The urea compound, diamine and stabilizer are suitably used in the mol ratio 1 : 1 to 1.5 : 0.005 to 0.05. In Examples (1) nonamethylene diamine, methylene bis urea and N-palmitoylnonamethylene diamine (mol ratio 104 : 100 : 2) are heated in water at 95 DEG C. with evolution of water, then at 120 DEG C. to distil off the water, subsequently at 200 DEG C, and finally at 250 DEG C under reduced pressure to give a product which can be spun into fibres capable of 3,5 fold elongation; (3) octamethylene diamine carbonate, urea and palmitic acid amide are reacted in water at 115 DEG C, and then at 210 DEG C with distillation of water, and the mass is finally heated at 240 DEG C. under reduced pressure. Hexa-, hepta-, deca-, undeca- and dodedamethylene diamines are other specified diamines. Specifications 530,267 and 864,888 are referred to.ALSO:An o -aminoalkylene urea is formed by heating at a temperature below 130 DEG C. a solution of an alkylene diamine and a urea compound comprising urea, methylene-bis-urea or ethylene-bis-urea, together with a viscosity stabiliser comprising an alkyl monoamide the alkyl radical of which contains at least three carbon atoms or an N-acyl alkylene diamine, the alkyl radical of which contains at least three carbon atoms.  The products are converted to linear polyureas (see Group IV(a)).  In examples there are prepared as intermediate compounds (2) omegaamino-nonamethylene urea, from nonamethylene diamine, urea and N-palmitoylnonamethylene diamine; (3) omega-amino-octa-methylene urea from octamethylene diamine carbonate, urea and palmitic acid amide.  Hexa-, hepta-, deca-, undeca- and dodeca-methylene diamines are other specified diamines. Specifications 530,267 and 864,888 are referred to.
Patent GB-369600-A (GB)
Title: Improvements in means for brushing teeth
IPC: A61C17/26
Filed: 1930-12-17
Abstract: 369,600. Massage appliances. JENKINS, G. B., of Jenkins Productions, Dereham, Norfolk. Dec. 17, 1930, No. 38042. [Class 81 (ii).] A device for domestic use for massaging the gums comprises a holder A, Fig. 3, in which is mounted a rotatable shaft C readily detachable from an outside source of power whereby the massage element at B may be rotated. Separate holders can be provided for each member of a family. The shaft C may be driven inany suitable manner as by a water motor or electrically or by clockwork or compressed air &c. The driving shaft C is supported in a tube D driven into the holder A. The massage member is attached to a threaded socket e in a contrate wheel E meshing with a pinion c on the shaft C. The socket e bears on a block F of the holder, and is retained by a detachable plate G. A block H forming the rear end of the holder A is threaded at h for engagement with a nut j turnably mounted on a flexible sheath J through which passes this driving cable j<1>. A driving sheath j2 with a half round bore receives a correspondingly shaped member c<1> of the shaft C. The holder is detached by unscrewing the nut j. Specification 369,253, [Group XXIII], is referred to.
Patent GB-621826-A (GB)
Title: Improvements in the construction of walls
IPC: E04B2/02
Filed: 1946-12-30
Abstract: 621,826. Walls; bricks. PIGUET, L. Dec. 30, 1946, No. 38052. [Classes 20(iv) and 87(i)] Relates to a wall constructed of interengaging prisms of truncated triangular (trapezoidal) horizontal section, those arranged externally being of one material, e.g. cement concrete, and those arranged internally being of some other material, e.g. terra cotta, agglomerated wood fibre, agglomerated cork, etc.; according to the invention, the elements have plane-surface abutting flanges 4 and are truncated at 2 sufficiently to provide mortar spaces. The internal elements 1 have small vertical holes 5 and a larger aperture 6 while the external elements 7 have one or more apertures 8. Semi-elements 9 are used at corners in conjunction with rectangular bricks 10, each of which is placed at right angles to that of the course below. At wall ends, an element 11 is used with one corner shaped to fit the adjacent element 7, in conjunction with a quarter-block 12. Normal external and internal facings may be applied.