baber/WOPTO huggingface dataset:
Patent GB-539235-A (GB)
Title: Improvements in or relating to the manufacture of esters
IPC: C07C69/14
Filed: 1940-03-01
Abstract: 539,235. Esters. DU PONT DE NEMOURS & CO., E. I. March 1, 1940, No. 3861. Convention date, March 1, 1939. [Class 2 (iii)] Vinyl and ethylidene esters are made by reacting acetylene with an aliphatic carboxylic acid in the presence of a mercury compound and an organic trisulphonic acid or a mixture of sulphonation products containing such trisulphonic acid. The preferred acid is methanetrisulphonic acid ; ethane- and propanetrisulphonic acids are also specified. Mixtures containing methanetrisulphonic acid, together with methionic acid and sulphoacetic acid, may be made by treating glacial acetic acid or acetic anhydride with sulphur trioxide, or by treating acetic anhydride with oleum. Such mixtures may be used for the purposes of the invention, or the methane trisulphonic acid may be isolated as the ammonium salt by adding ammonium acetate, and the free acid obtained by treating the ammonium salt with aqua regia. The aliphatic acid used should contain sufficient of its anhydride to render the reaction mixture anhydrous throughout the process. Examples are given of the preparation of vinyl acetate and ethylidene diacetate ; at temperatures up to about 75‹C. the former is the chief product, and may be removed as fast as it is formed by introducing the acetylene at a greater rate than it is absorbed. The excess acetylene together with the vinyl acetate are passed through a condenser, from which the vinyl acetate is removed and the acetylene recirculated to the reaction chamber. At higher temperatures ethylidene diacetate is the chief product. The process may also be applied to the preparation of vinyl propionate and butyrate and ethylidene dipropionate and dibutyrate.
Patent GB-1118122-A (GB)
Title: Improvements in gas cocks
Inventor: STEVENS ROGER BIEVER
IPC: F16K5/02
Filed: 1966-01-28
Abstract: 1,118,122. Valves. HARPER-STAR Ltd. 16 Jan., 1967 [28 Jan., 1966], No. 3894/66. Heading F2V. In a gas tap the spindle 16 is provided with a spring-loaded plunger 20 which engages a longitudinal slot 15 in the plug 9, and a circumferential slot 17 in the casing. A spring 14 urges the plunger against the right-hand side of slot 17 which has notches (Fig. 3, not shown) to retain the plug in positions corresponding with the " off " and " simmer " positions. The Specification states that the plug may have a straight-through gas passage.
Patent GB-715027-A (GB)
Title: Improvements in or relating to journal lubricators
Inventor: HARKENRIDER ROBERT JOSEPH
IPC: B61F17/08
Filed: 1951-02-17
Abstract: 715,027. Lubricating. MILLER, G. D. Feb. 17, 1951, No. 3914/51. Class 12(3) A journal lubricator for traction motors includes a resilient mounting assembly, a holder for a lubricating pad. a pin for pivotally mounting the holder on the assembly, and a bearing for the pin including a bushing of resilient bearing material resistant to oil alkali. The lubricator is provided with a wick 19 dipping into a reservoir 15, and the mounting assembly comprises links 37 pivoted and sprung to flanges 32 of a plate 31. A holder 21 pivoted on a pin 24 provided with a bush 25, has stop plates 20 of resilient material adapted to spread felt bodies 17 into contact with a journal 12, and bearings for the pin comprise bushes 45 of resilient oil resistant material which are flanged and retained in the links 37 and on reduced portions 47 of the pins 24. The bushes may be of polymerized chloroprene secured to the links by a cement of chloroprene and a solvent with possible addition of fibres and a curing agent. Specifications 715,025 and 715,026 are referred to.
Patent GB-685555-A (GB)
Title: Improvements in means for holding a sheet of glass or the like on the table of a surface polishing machine or other like member
IPC: B24B41/06
Filed: 1950-02-16
Abstract: 685,555. Suction work-holders. PERRY, W. J. May 15, 1951 [Feb. 16, 1950], No. 3960/50. Class 60. The table or platen of a glass polishing machine is formed of metal, wood or other rigid material and its top face is covered by a layer of rubber or other air-tight resilient or pliable material; holes 8 in the rubber layer register with smaller holes 3 formed in the table and coupled by pipes 4 to a main conduit 5. Each pipe 4 is controlled by a separate adjustable closure valve 6; the main conduit 5 is controlled by a master adjustable closure valve 7 and is coupled to a suction producing device.
Patent GB-1156732-A (GB)
Title: Imidazoles
IPC: C07D233/92
Filed: 1967-01-26
Abstract: 1,156,732. 5 - Nitroimidazole derivatives. CHAS. PFIZER & CO. Inc. 26 Jan., 1967 [3 Oct., 1966], No. 4036/67. Heading C2C. Novel compounds and their pharmaceutically acceptable acid addition salts of formulµ wherein R is C 1-6  alkyl, m is 1 to 4, n and p are 1 to 3 but n+p are not greater than 4, and X is halogen, OH, NO 2 , NH 2 , or mono or di(C 1-6 )- alkylamino, are prepared by reacting a 2-alkyl- 5-nitroimidazole with an arylsulphonyl ester of either of formulµ Aryl SO 2 .O.(CH 2 ) m C#CH and Aryl SO 2 .O(CH 2 ) n C#C(CH 2 ) p X and, optionally, converting the product to a salt. p-Toluenesulphonic acid esters of the last two formulµ above are prepared by reacting the required alcohol with the required acid chloride.
Patent GB-952684-A (GB)
Title: Improvements in or relating to electric toasters
Inventor: BYRNE PHILIP LOUIS
IPC: A47J37/08
Filed: 1962-02-02
Abstract: 952,684. Electric toasters. GENERAL ELECTRIC CO. Ltd. Feb. 4, 1963 [Feb. 2, 1962], No. 4108/62. Heading A4D. [Also in Division H2] An electric toaster which has a carriage 3 for bread is moved automatically through a heating zone defined by a tunnel Fig. 1 (not shown) having several parallel electric heating elements 7, from a position at one end of the heating zone to a position at the other end of the heating zone, wherein electric switching means (see Division H2) are arranged to be operated by the carriage 3 at pre-determined positions along the travel of the carriage for sequentially switching the heating elements on and off. The carriage 3 is first manually pushed along, from the left of the figures, towards the switching means until its leading edge contacts a flange 52 and so switches on the motor 14 and heating elements 7. The carriage is then drawn along intermittently by a pawl 24 attached to a movable bar 18, which engages teeth on a rack 30 secured to the underside of the carriage. When the trailing edge of the carriage passes a projection 47 the motor 14 and elements 7 are automatically switched off. The bar 18 is moved intermittently by the motor 14 driving a cam 16. This cam 16 co-operates with a wheel 17 attached to the bar 18, so that the bar moves to the left under the action of the cam, and returns under the action of a spring 22. The speed of the carriage 3 through the heating zone can be varied by adjusting the position of a lever 32 which varies the length of stroke of the bar 18. If the carriage 3 enters the heating zone, from the right of the figures, flange 53 will be used to operate the switch, and pawl 25 to draw the carriage along. The heating elements 7 are arranged to provide several passages for the slices of bread with guides to ensure correct alignment of the bread. The carriage 3 has pockets on its upper surface to receive the slices of bread. These pockets can be formed from narrow strip metal, or U- shaped metal wires with thin wires held in tension between the limbs of the U.
Patent GB-544837-A (GB)
Title: Improvements in copying lathes for turning profiled work pieces
IPC: B23Q1/54
Filed: 1941-03-28
Abstract: 544,837. Lathes. FELL, S. H., and TYSON, B. March 28, 1941, No. 4166. [Class 83 (iii)] A copying-lathe for turning profile work-pieces has the cutting-tool guided by a template rotating coaxially with the work and also by a cam rotating in synchronism with the work about a different axis. A turret 1 has a number of independent worktables 2, the upper section of the turret being adjustable to accommodate different numbers or thicknesses of work pieces which are held down by upper clamps. 3 driven in synchronism with the work pieces at the loading and machining stations by vertical shafts 4 and gears 5. The templates 7 are arranged beneath the work pieces. At the lower end of each work spindle is a clutch part 8 which when the spindle is at the loading and machining stations coacts with a clutch part 9 on a vertical spindle 17. The loading station is provided with a work-locating device comprising a plate 12 fitted with tumbler stops 14, 15 and adjusted by gearing 13. The stop 14 coacts with a pin on the spindle gear 6 when the table rotates in a direction opposite to the working direction to arrest the work in a determined position. The cutter 11. is coaxial with a follower 20 engaging the template. Both are supported in a radial arm 19 pivoted on a spindle 26 which also carries a lever arm 22 actuated through a lever 23 from a cam 24 to impart radial movement to the cutter head. The spindle 26 is carried by a frame pivoted at 27 and controlled by a pin engaging a cam groove 28 thus imparting a tangential component of movement to the cutter head. These radial and tangential movements assist in the shaping of difficult contours. The drive of the work tables is reversible so that the feed may be either with or against the cut.
Patent GB-634767-A (GB)
Title: Improvements in gas operated automatic guns
IPC: F41A5/22
Filed: 1948-02-12
Abstract: 634,767. Automatic guns. BREVETS AERO-MECANIQUES SOC. ANON. Feb. 12, 1948, No. 4182. Convention date, March 8, 1947. [Classes 92 (ii) and 119] To permit removal of the barrel 1 and the gas-operating mechanism from the breech casing 2 as a unitary block, at least two gas piston rods 4 operating directly on the breechblock 3 are guided in rearwardlyconverging bores in the interior of the barrel structure. The rods are connected to pistons 6 in a cylinder block 8 in the form of a hoop surrounding the barrel, the two cylinders being supplied through an arcuate channel 10 from a single gas tapping. The return-springs 5 of the pistons are compressed through elastic washers 11 and sliding sleeves 12.
Patent GB-1425010-A (GB)
Title: Brackets for use in building
IPC: E06B1/60
Filed: 1972-01-28
Abstract: 1425010 Window frame bracket NICHOLLS OF FARNHAM Ltd and H C NICHOLLS 24 Jan 1973 [28 Jan 1972] 4235/72 Heading E1J A bracket for securing a door or window frame to a wall comprises a flat elongate body 10 for inserting between brickwork courses, the body widening at one end 12 and having a ridge 14 at that end, the other end having an attachment part 11 with a hole 13 for securing to a frame by e.g. a nail and ribs 16 or grooves being formed on opposite faces of the body. The part 11 may be co-planar with the body 10. The end 12 may be square, circular, triangular or formed by two divergent limbs.
Patent GB-1005310-A (GB)
Title: Improvements in or relating to windows
IPC: E06B3/50
Filed: 1964-01-31
Abstract: 1,005,310. Reversible pivoted sliding windows; bolt fastenings. J. ANDRE, M. COLLIGNON, R. DUPONT, and R. GEERINCK. Jan. 31, 1964 [Feb. 1, 1963; Jan. 24, 1964], No. 4248/64. Headings E1J, E2A and E2F. A window has both out and down motion, Fig. 3, and swing over motion, Fig. 2, and comprises a fixed frame 1 in which an opening frame 7 is mounted by means of two slats 9, Fig. 7, which extend the full height of the opening frame 7 and are hinged to the fixed frame by means of pivot connections 2, 3 and a locking means 18, 19 whereby the slat 9 may be locked to the opening frame 7. The handle 18 of the locking means mounted on the frame 16 has three selective positions and operates two rods 19, so that the window may be locked, have out and down motion or have swing over motion. Runners 5 rigidly attached to the slats 9 and mating with a projection 30, Fig. 8, on the opening frame 7 enable the said frame to pivot, rise and fall in relation to the slats 9, whilst the arm 8 provides pivotal connection between the two members. The rods 19, depending upon the position of the handle 18, may engage within an opening 20, Fig. 14, in the base of the slat and/or may project the bolt 27 by means of the projection 34 into either the said opening 20 or fully into the opening 21 in the fixed frame 1, according to whether the window is required for swing-over motion, out and down motion or locking in the closed position. Uprights 4, Fig. 8, are rigidly attached to the slats 9 and extend over the upper half of the window, whilst uprights 25, Fig. 10 (not shown) extend over the lower half and are fixed to the stiles 10, 11 of the fixed frame 1, such that in the completely closed position they constitute extensions of the uprights 4. A seal 35, Fig. 8, is provided together with cover strips 28.
Patent GB-429792-A (GB)
Title: Improvements in apparatus for comparing the permanence of colour in pigments, dyes and the like
IPC: G01N17/00
Filed: 1934-02-09
Abstract: 429,792. Testing paints &c. DIGBY, W. P., 6, Queen Anne's Gate, Westminster, KING, F. A., and KELVIN, BOTTOMLEY, & BAIRD, Ltd., 18, Cambridge Street, Glasgow. Feb. 9, 1934, Nos. 4326 and 17731. [Class 97 (i)] The rate of change of colour, or loss of hiding power, of paint varnish, dye, &c., is determined by subjecting an article to which the paint &c., is applied to the action of ultra-violet light and liquid alternately and/or simultaneously, for predetermined periods of time, with or without intervening rest periods. Figs. 1 and 2 show a cell in which the coated &c. article is inserted for testing, consisting of a metal box 1 lined with insulating material and having a window 3 transparent to ultraviolet light. A metal plate 8 coated with the paint &c., is inserted in guides 7 and is provided with a terminal 9. A number of graphite rods 4 connected by clamps 5 and provided with a terminal 6 are also inserted in the cell. Liquid inlet, outlet, and overflow connections 10, 11, 12 are provided so that an electrolyte such as tap water, sea water, &c., can be admitted to or drained from the cell as desired. The rods 4 and plate 8 with the liquid form a voltaic couple, so that a voltmeter connected to the terminals 6, 9 gives a reading which depends on the condition of the layer and can be plotted against time to enable the rate of loss of hiding power &c., to be determined. A number of cells may be arranged round a source of ultra-violet radiation, such as an arc lamp, a selector switch being provided so that any cell can be connected to the measuring instrument. An annular tank containing liquid surrounds the cells and is connected to the several cells by piping.
Patent GB-738855-A (GB)
Title: Improvements in or relating to heat exchange apparatus
Inventor: SUMNER JOHN ARTHUR
IPC: F25B29/00
Filed: 1953-02-16
Abstract: 738,855. Tubular heat-exchangers for heat pump installations. MORRIS MOTORS, Ltd. May 13, 1954 [Feb. 16, 1953], No. 4328/53. Classes 29 and 64 (3). Relates to heat-exchangers, particularly for use as evaporators or condensers in heat pump installations, comprising a casing 15 enclosing an assembly 1 of gilled tubes, the tubes (not shown) extending between adjacent inlet and outlet headers 4, 5 and a return header 6. According to the invention, the tube assembly is supported at both ends by the casing and in particular at one end by fluid inlet and outlet pipes 10, 11 extending from the headers 4, 5 respectively, said pipes 10, 11 being received in sleeves 22 provided on a detachable cover 21 of the casing, and a high pressure sealing ring 24 being fitted between each of the said pipes and its associated sleeve. At the other end of the tube assembly, a boss 16 extends from the return header 6 and is secured against a further detachable cover 18 of the casing by a nut 19 which is screwed on to a threaded extension of reduced diameter extending from the boss 16. In addition to the sealing rings 24, other sealing rings 25 may be provided between the covers 18, 21 and end flanges of the casing 15; also a sealing ring, not shown, may be provided between the cover 18 and the mating face of boss 16. When operating as a condenser or evaporator in a heat pump installation, the working fluid is passed through the casing and over the gilled tubes and water is passed through the tubes. Specifications 538,018 and 598,772 are referred to.
Patent GB-166158-A (GB)
Title: Improvements in braiding machines
IPC: D04C3/00
Filed: 1917-03-26
Abstract: 166,158. Horn, G. March 26, 1917. Braiding-machines.-In machines of the type comprising inner and outer sets of bobbins rotat. ing in opposite directions, the outer thread-guide arms are rotated with a varying angular velocity to enable the outer threads to pass over and under two inner bobbins to produce a two-overtwo braid. Figs. 1 and 4 show a machine in which the arms 28 of the outer threads are carried by elliptic gears 27 meshing with elliptic gears 26 fast with gears 25 engaging a track 22. The outer bobbins 23 are carried by a frame 6 actuated through gearing 7, 8, which frame supports intermeshing gears 19, 19<a> engaging respectively with a fixed gear 20 and a frame 21 carrying the track 22. A sleeve 3, driven through gears 4, 5, carries a track 18 driving the inner bobbins 12 through gears 13 mounted on the inner guide disc 9 which is driven from the sleeve 3 through a double pinion 16, 17 meshing with a fixed gear 15 and a gear 14 on the disc 9. Fig. 6 shows a modification in which the outer thread arms 48 are pivoted eccentrically to discs 46 on which revolve gears 49 engaging the track 43, the gears 49 driving the levers 48 through a pin-andslot connection 50. The discs 46 are secured to arms 45 on a frame 34 supporting the outer bobbins 44 and driven through a gear 36. The track 43 is supported from the inner bobbin-guide frame 32 by arms 42. A frame 33, driven by a gear 35, carries the inner bobbin driver 41 and drives the frame 32 through a double gear 37.
Patent GB-835215-A (GB)
Title: Improvements relating to teasing machines for textile fibres and the like
Inventor: CALLAGHAN ALBERT EDWARD
IPC: D01G9/08
Filed: 1955-02-17
Abstract: 835,215. Teasing textile fibres. CALLAGHAN & SON Ltd., A. E: May 17, 1956 [Feb. 17, 1955; Oct. 10, 1955], Nos. 4816/55 and 28848/55. Class 120(1) A machine for teasing textile fibres comprises a teasing drum 3 mounted to rotate about a horizontal axis in casing 1 which at the top is curved over the drum 3 substantially concentrically therewith and presents an opening 4 situated substantially centrally above, and extending in the axial direction of the drum 3, and a pair of feed rolls 5, 6 mounted side by side in the opening 4 to feed, preferably from a hopper 7, material to be treated to the drum 3 at a location substantially vertically above the axis of, and close to the top of, the drum 3. One of 'the feed rolls 6 is preferably spring-urged against a driven roll 5 by a spring 9 adjustable by a screwed spindle 11, and the surface of the rolls may be plain, knurled, helically wound with wire, or covered with wire mesh. Preferably part of the casing 1 is formed as a dusting grid with bars 14 and a hinged flap 15 operated by a latch 16. More than one pair of feed rolls 5, 6 may be employed.
Patent GB-1140013-A (GB)
Title: 2-alkanoyl-4-halo-5-acylaminophenols
IPC: C07C233/16
Filed: 1967-02-01
Abstract: 1,140,013. 2 - Alkanoyl - 4 - halo - 5 - acylamino - phenols. SOC. D'ETUDES SCIENTIFIQUES ET INDUSTRIELLES DE L'ILE-DE-FRANCE. 1 Feb., 1967 [5 Feb.. 1966], No. 4830/67. Heading C2C. The invention comprises compounds of formula wherein X is halogen, R 1  is an alkanoyl group and R 2  is an acyl group. They are prepared by heating a compound of formula in the presence of a catalyst to affect a Fries rearrangement. A number of suitable catalysts are specified, and an example is given. The acyl group may be derived from an aliphatic, cycloaliphatic, aromatic or heterocyclic  acid, e.g. from butyric, cyclohexane carboxylic, benzoic, naphthoic, nicotinic or furoic acid.
Patent GB-841819-A (GB)
Title: "feed compositions"
IPC: A23K20/137
Filed: 1959-02-11
Abstract: p - aminobenzene - sulphonamido - pyrimidine or p-aminobenzenesulphonamido - 4 - methyl - pyrimidine is incorporated in animal feeds, preferably in the proportion 0,01-0,2% by weight.ALSO:p-aminobenzene - sulphonamido - pyrimidine or p - aminobenzene - sulphonamido - 4 - methyl - pyrimidine is incorporated in animal feeds, preferably in the preparation 0,01 - 0,2% by weight.
Patent GB-511365-A (GB)
Title: Improvement in firearms
IPC: F41A5/02
Filed: 1938-02-16
Abstract: 511,365. Automatic firearms. JOHNSON, M. M. Feb. 16, 1938, No. 4845. Convention date, Jan 5. [Class 119] An automatic tirearm of the type having a breechbolt fitted with an extractor and breech mechanism permitting automatic recoil of the bolt when the firearm is discharged, has means for imparting a kick to the bolt substantially as it leaves the firing chamber, in order to facilitate extraction. The invention is described as applied to a firearm having a receiver 1 and a barrel 2 which has a short recoil in the receiver, the barrel being screwed to a toothed ring 14 with which teeth 15 on the breech-bolt 5 may be locked or disengaged by angular movement of the bolt. The bolt has a roller 20 guided in a longitudinal groove in the receiver so that during the recoil of the bolt and the barrel the bolt is rotated and unlocked, the bolt then recoiling alone without further rotation. The initial rotation of the bolt, to enable the roller 20 to enter the longitudinal groove is effected by a cam piece 16 on the bolt engaging a corresponding cam surface 23 on an abutment 24 carried by a sliding cover 25 on the receiver, the cover being secured by a screw 27 in such position that the abutment 24 contacts with a fixed abutment 28 on the receiver. A heavy plunger 10 guided longitudinally by the roller 21 has a cam face 18 engaged by the cam 16 on the bolt, so that during the initial recoil of the barrel and bolt the turning of the bolt imparts longitudinal motion to the plunger 10, relatively to the bolt, whereby, substantially at the instant when the bolt is unlocked and commences to recoil independently of the barrel, the rear end of the member 17 strikes a shoulder 29 on the bolt, this impact ensuring that the extractor 6 in the bolt will start the withdrawal of the empty cartridge case. The plunger 10 is linked at its rear end to the member 11 coupled to the recoil spring, so that at the end of the return movement, the cam face 18 may rotate the bolt into locked position. An ejector 7 with a nose 30 in a groove in the breech-bolt is rocked by a cam formation at the fore end of the breech-bolt, to eject the cartridge case laterally. A handle 9 is fitted for manual control of the breech-bolt. Specification 486,907 is referred to.
Patent GB-588531-A (GB)
Title: Improvements in or relating to the manufacture of plastic films
IPC: B28B21/30
Filed: 1945-02-27
Abstract: Thin films of thickness not exceeding 0.002 inches are obtained by casting a viscous solution containing 10 per cent or less of a polystyrene of such high viscosity characteristics that a 5 per cent solution has a viscosity of at least 10,000 centipoises.  The polystyrene should have a mean molecular weight exceeding 200,000 and it may have a specific viscosity of at least 300 (Staudinger) in a 2 per cent solution.  A 5 per cent solution in toluene of polystyrene of molecular weight 250,000 to 300,000 or a 4 per cent solution in toluene of polystyrene of molecular weight 600,000 to 700,000 may be used.  The distance between the slot of the feeder and the casting surface may be 5- or 10-thousandths of an inch. Mineral fillers may be incorporated in the film-forming solutions. Titanium dioxide, barium titanate, or strontium titanate may be incorporated in order to increase the dielectric constant.  The proportion of mineral filler may be 10-50 per cent by volume of the film.