baber/WOPTO huggingface dataset:
Patent GB-568043-A (GB)
Title: Purification of sulphathiazole
IPC: C07D277/52
Filed: 1943-04-21
Abstract: Sulphathiazole is purified by forming an aqueous solution of a salt of sulphathiazole with a volatile base having a dissociation constant between 1 X 10-9 and 1 X 10-3, clarifying the solution and then removing the base by heat.  Bases mentioned as suitable for the process of the present invention include ammonia, methylamine, dimethylamine, trimethylamine, ethylamine, ethylenediamine, isopropylamine, N-propylamine, methyldiethylamine.  The removal of the base by heat is preferably assisted by the application of a vacuum.  In examples: (1) crude wet sulphathiazole is dissolved in concentrated ammonia, decolourised by carbon, vacuum distilled until the solution ceases to be alkaline.  The pure sulphathiazole is filtered and washed; (2) crude wet sulphathiazole is dissolved in ammonia and clarified as in example (1).  The solution is cooled and the ammonium salt of sulphathiazole separates.  It is filtered and heated under reduced pressure to leave pure sulphathiazole; (3) crude sulphathiazole is dissolved in aqueous sodium hydroxide, clarified, and ammonium chloride added.  The ammonium salt of sulphathiazole separates, which is distilled as in example (2).
Patent GB-124840-A (GB)
Title: Improvements in or relating to the Lock Mechanism of Ordnance.
Inventor: DAWSON ARTHUR TREVOR
IPC: F41A19/57
Filed: 1915-06-02
Abstract: 124,840. Dawson, Sir A. T., and Buckham, Sir G. T. June 2, 1915. Ordnance breech mechanism. - Relates to primer-lock firing-mechanism having a rectilinearly-moving lock-frame, and consists mainly in so constructing a rotary cam which opens the lock-frame against the action of a spring during the rotation of the breech-screw, that the lockframe can, when the breech-screw is fully unlocked, return to a partly open position so as to act as a primer-retainer The invention also comprises special means for assembling the lock and actuating the guide-bolt. Figs. 2 and 6 show, in sectional plan, the invention applied to primer-lock firing-mecbanism having a lock-frame 13 which slides laterally in a box-slide A<1>. Fig. 2 shows the lock-frame in its closed position, when the hammer C can be actuated against the action of the spring C<2> to fire the primer. The lock-frame is reciprocated through a link B' and guids-bolt F by a slotted cam E rotated by the breech-actuating mechanism. The developed form of the camslot is shown in Fig. 5, with the pin F in full lines in the position it occupies when the lock is closed. When the breech mechanism is actuated to open the breech, the cam moves in the direction shown by the arrow, and the lock-frame is moved to the right by the engagement of the bolt F in the slot e; the final movement compressing a spring E<1> by the contact of a plunger e<2> with a stop e<2x> on the breech-screw carrier. During this movement, a single-arm primer-extractor E<2> is operated. The reaction of the spring E<1> then moves the lock to the partly closed position, the bolt F reaching the position shown in dotted lines in Fig. 5. In this position, a. fresh primer may be inserted, the lockframe acting as a primer-retainer. When the breech mechanism is actuated to close the breech, the lock-frame is moved to the fully closed position, the primer being inserted by the incline B<x>, and the bolt F moving in the slot e', ascending the incline e<1x>, and dropping into the slot e. To withdraw the guide-bolt F and at the same time open the lock by hand in case of missfire, a lever F' is moved to the right and then released, the pin F dropping into a recess e<3>, Fig. 5, so that the lock can be moved by the spring E' into the primer-insertion position. After inserting the fresh primer, the lever F<1> is moved to the left, first to withdraw the guide-bolt, and then close the lock. To allow the box-slide, together with the lock-frame, to be readily dismounted from the link B<1> when the lock-frame is open, the link B<1> has a recess b<3x> curved concentrically with the threads connecting the box-slide A<1> and the ventbolt A, and engaging a corresponding part b<3> on the lock-frame.
Patent GB-1449326-A (GB)
Title: Photosensitive resin compositions
IPC: C08F283/10
Filed: 1974-02-13
Abstract: 1449326 Photosensitive resin compositions HITACHI CHEMICAL CO Ltd 13 Feb 1974 [14 Feb 1973 18 July 1973 19 Sept 1973] 6663/74 Headings C3P and C3B [Also in Division G2] Photosensitive resin compositions comprise (A) a photopolymerizable compound containing at least two terminal ethylenic groups, (B) a photosensitizer, (C) a compound having at least two epoxy groups, and (D) a compound selected from dicyandiamide, p,p<SP>1</SP>-diaminodiphenyl compounds, polycarboxylic acids and polycarboxylic anhydrides, or a mixture of one or more polycarboxylic acids and one or more polycarboxylic anhydrides. Component (A) is suitably a compound containing two or more (meth)acrylate or (meth)acrylamide groups, or triallyl cyanurate; polymers containing (meth) acrylate groups in side chains are also suitable. Examples of sensitizers (B) are benzophenone, Michler's ketone, benzoin and its alkyl ethers, anthraquinone and alkyl-substituted anthraquinones, and benzil. The epoxy component (C) may be, for example, a bisphenol A-epichlorohydrin condensate, a polyolefin epoxide, a novolac resin epoxide, or a glycidyl methacrylate copolymer. The compositions may also include a conventional curing accelerator for epoxy resins, as well as thermal polymerization inhibitors, polymeric binders, plasticizers, dyestuffs, pigments or fillers. When component (D) is not a polycarboxylic acid, a copolymer of (meth)acrylic acid may be added as a curing accelerator for the epoxy resin. The compositions of the invention can be cured with actinic radiation to produce films having good solvent, chemical and heat resistance and good mechanical strength. Applications include protective films, photosensitive adhesives, solder resists, paints, plastic reliefs, precision-processing of metals, and the production of printing plates and printed circuit boards.
Patent GB-471541-A (GB)
Title: Improvements in or relating to collapsible photographic cameras
IPC: G03B3/02
Filed: 1936-03-05
Abstract: 471,541. Photographic cameras. KODAK, Ltd. March 5, 1936, No. 6710. Convention date, April 30, 1935. [Class 98 (i)] A collapsable camera having lazy, tong links for extend. ing the lens front has a supporting-link at each side pivotally connected to the hinged base - boarc and to the part of the lazy-tong link which is slidable on the lens front. The lazy-tong links comprise links 12, 13, pivoted at 14 and connecting a flange 10 on the lens front 6 to a bracket 11 secured on the camera body. Link 12 is pivoted at 15 to the flange 10, and at the other end has a stud 16 slidable in a slotted part 17 of the bracket 11. Link 12 has a stud 18 slidable in a slot 19 on the lens board 10. The supporting-link 20 is pivotally connected at 21 to the camera baseboard 22, and at its upper end to the stud 18, firmly holding the camera in its extended position. The bed or baseboard 22 is hinged to the camera body by a hinged pintle 23 mounted on an arm 24 secured to the body, and thereby compactly houses the linkage. Spring-urged plate catches 31 engage shoulders 30 on the links 20 to prevent collapsing of the links, and they can be released by finger-pieces 31.
Patent GB-570830-A (GB)
Title: Improved metal clip for supporting wooden joists or the like substructural elements on foundations of concrete, brick and the like
IPC: E04B1/26
Filed: 1944-04-12
Abstract: 570,830. Securing joists. GROVES, A. H. April 12, 1944, No. 6724. [Class 20 (iv)] A wooden joist D is screwed in position by means of a U - shaped clip of spring steel, the sides A of the clip serving, by virtue of its construction to bear resiliently against the sides of the joist, and being formed with inwardly and downwardly directed pointed projections B which press into the joist. The clip is secured by screws C to a wooden block E or the like previously built into the foundation, and may have its sides converging towards one another, the ends of the sides being rolled outwardly at F.
Patent GB-1419402-A (GB)
IPC: E21C27/36
Filed: 1973-02-12
Abstract: 1419402 Automatic control of travel TAIHEIYO COAL MINING CO Ltd 12 Feb 1973 6837/73 Heading G3N [Also in Divisions E1 and E2] An automatic reversal mechanism, for a mining machine 10 hauled by a chain 6 alongside a face conveyer, includes magnetically operable switches 13a-h mounted on the side of the conveyer and an actuating magnet mounted on the machine 10; two of the switches (e.g. 13c, 13g), Fig. 4, being selected to define reversal points for drive motor 1. The motor is first stopped, by a direct signal to switch 29, when either of the switches selected is actuated by the magnet then, after a time delay (effected by relay 27) to allow the machine to come to rest, the motor is reversed.
Patent GB-934890-A (GB)
Title: Improvements in and relating to electric supply systems and apparatus
Inventor: SHEN TZU EN
IPC: H03H1/00
Filed: 1961-02-24
Abstract: 934,890. Capacitors. TELEPHONE MANUFACTURING CO. Ltd. Feb. 21, 1962 [Feb. 24, 1961], No. 6840/61. Class 37. [Also in Group XL (b)] A roll capacitor is fashioned from two main electrodes 10, 11 and two auxiliary electrodes 12, 13 which each provide two auxiliary capacitors in series with each other and in parallel with the main capacitor. An inductor is accommodated within the capacitor assembly and connected to a common terminal of the electrodes 12, 13 to form a mains interference suppressor.
Patent GB-1517062-A (GB)
Title: Dough divider
IPC: A21C5/02
Filed: 1977-02-07
Abstract: 1517062 Dough dividing apparatus BAKER PERKINS HOLDINGS Ltd 7 Feb 1977 [20 Feb 1976] 06850/76 Heading B5A A dough divider comprises a hopper 1, a rotary head 3 with a pocket 5 to which a metered quantity of dough is fed and compressed by a reciprocating ram 7, a reciprocal knife 8 to divide the metered quantity from the main mass in the hopper, and projecting members 9 which inhibit upward movement of the dough in the hopper during rotation of the head from a compressed dough discharge position to the dough receiving and compressing position.
Patent GB-887600-A (GB)
Title: Improvements in or relating to tiles
IPC: E04D1/04
Filed: 1959-02-27
Abstract: 887,600. Roofing tiles. POWEL, W. S. March 28, 1960 [Feb. 27, 1959], No. 6901/59. Class 87(1) A roofing tile having a concave upper surface and mating stepped side edges 1, 2 has hanging nibs 4, a central recess 6-8, and a lower grooved concave portion 5 shaped to fit on the tiles in a lower course. The upper surface may be V- shaped, curved, or ogee shaped, and the tile may have fixing holes in portions 9.
Patent GB-1464450-A (GB)
Title: Gaseous discharge display/memory panels
IPC: G09G3/297
Filed: 1974-02-15
Abstract: 1464450 Matrix displays OWENS-ILLINOIS Inc 15 Feb 1974 6923/74 Heading G5C Square wave write and erase pulses used to operate a gas discharge display/memory panel with crossed conductor arrays have a magnitude sufficiently great that wall charges of the same magnitude are produced. This mode of operation reduces the effects of non-uniformity of the panel cells. The charge of wall voltage #V w  vanes with the voltage applied across the cell V c  where V c  is the external voltage plus the wall voltage V w  (if present). When the write voltage is above b the wall charge produced, i.e. #V w  is equal to the write voltage and is not affected by cell variations whilst below b #V w  it is affected. During sustain operation the total charge of wall charge #V w =V s +V w ; V s  = V w  and #V w  must be at a point above b for stable operation. The relatively high write and erase pulses produce two discharges due to the resulting high wall charges.
Patent GB-1418406-A (GB)
Title: Containers for the transport of goods
IPC: B60J5/10
Filed: 1973-02-13
Abstract: 1418406 Freight containers BLOXWICH LOCK & STAMPING CO Ltd 26 Feb 1974 [13 Feb 1973] 6954/73 Heading B8P Vertical racking between the adjacent edges of a pair of hinged freight container doors 2 and 3 is prevented by a rigid plate 13, which is fastened (e.g. by welding; rivets or bolts) at 14 to one door and which has vertically spaced openings 18 receiving complementary projections 20 on the other door and the container door frame. The projections may each be formed by steel bushes welded directly to the frame and door, or alternatively, when the door is of wooden construction, Fig. 2 (not shown), the bushes are welded to a carrier strip and bolted to the door, The plate 13 is joggled to accommodate a sealing gasket 5 located between the meeting edges of the doors. The doors are held closed by operating rods having cams 8 engaging keepers 9 on the door frame.
Patent GB-178085-A (GB)
Title: Improvements in gangways for rigid airships
IPC: B64B1/40
Filed: 1922-03-10
Abstract: 178,085. Luftschiffbau-Zeppelin Ges., and Arnstein, K. April 4, 1921, [Convention date]. Girders and beams.-Gangways for rigid airships are formed of booms 1, 3 braced by diagonal struts 4 which are stayed against bending by parallel stretched wires 5, Fig. 1, or by diagonal wires 7, Fig. 4, clamped to the struts. The gangway frame may be triangular, rectangular, or trapezoidal in cross section, the lower booms 3 being connected by cross beams which support a central longitudinal member. Where the wires 7 are attached to the ridge beam 1, the latter is stayed to the boom 3 by struts 8, and transverse struts are provided at the points of attachment of the wires to the booms 3.
Patent GB-292227-A (GB)
Title: Improvements in devices for supporting portable power driven tools, such as drills, riveting apparatus and the like
IPC: B23B45/14
Filed: 1927-03-14
Abstract: 292,227. Stedman, P. A. March 14, 1927. Drilling-machines; stands or supports for portable machines.-A support for portable powerdriven tools such as drills, riveting apparatus and the like comprises a tripod A in which a pillar D may be vertically adjusted and locked by a clamp C, the pillar being rotatable on a bearing B. A bracket E on the pillar has an arm H pivoted thereto in which is slidable an extension J carrying a bracket M to which the tool O is pivoted. A collar K freely rotatable on the extension J carries links R connected through levers G with links S attached through a collar U with a balance weight T, the pivotal axes of the levers G and the arm H being coincident so that the balance weight is only moved when the tool is displaced radially, the latter being thereby balanced in all positions.
Patent GB-512490-A (GB)
Title: An improved process for the production of seed disinfectants
IPC: C07F3/12
Filed: 1938-03-07
Abstract: 512,490. Seed disinfectants. SIX, G., BOOER, J. R., and LEYTON MANUFACTURING CO., Ltd. March 7,1938, No. 7136. [Class 81 (i)] [Also in Group IV] Seed disinfectants are prepared by treating phenyl-mercury acetate or the di- or trimercurated compound or mixtures thereof, as well as the mercury acetates of benzene homologues, with magnesia in the presence of water. The resulting hydroxides may then be reacted with organic nitrogen compounds of' the type Z.NH.R<1>, in which Z is a monovalent replaceable element and R<1> is an organic radicle of which one carbon atom is linked with the nitrogen. The latter products may also be prepared in one operation by interaction of the arylmercury acetate with magnesium oxide and the organic nitrogen compound in the presence of water. An inert diluent may be added to the reaction products or in the course of their preparation, and may comprise an excess of magnesium oxide. The magnesium oxide used is preferably that produced by calcination of magnesite at a low temperature. According to the examples (1) phenylmercury urea is obtained by heating phenylmercuryacetate with urea, in the presence of magnesium oxide and water, the product being filtered and allowed to crystallise ; the urea may be replaced by acetamide, and the phenylmercury acetate by phenyl-dimercury acetate or a tolyhnercury acetate ; (2) commercial phenylmercury acetate, which contains 50 per cent. polymercurated compound, is mixed with magnesium oxide, urea, finely-divided clay and sufficient water to make a paste, and the whole then dried and ground. Specifications 321,396, [Class 81 (i)], and 486,986 are referred to.
Patent GB-939748-A (GB)
Title: Case for a razor set
IPC: B65D6/00
Filed: 1962-02-23
Abstract: 939,748. Razor cases. PHILIP MORRIS Inc. Feb. 23, 1962 [May 12, 1961], No. 7242/62. Class 18. [Also in Group XXV] A case for a razor comprises a base 12, a lid 14 and an intermediate tray 16, the lid 14 having arms 35 to which are attached pintles 36 which locate in openings 39 in the box base 12, form upward projections on the intermediate tray 16 locate in notches 48 and provide the final closing of the opening 39 to prevent the pintles 36 falling out. The intermediate member 16 is held in place by the co-operation of cut outs 56 ... 58 with projections 60 .... 62 in the base 12. A compartment 75 is provided for razor blades and a T shaped trough 65 provided for the razor. The trough 65 has a sloping member 67 which allows water to run off the razor through a slit 70 and a corresponding slit 71 in the base. The base and intermediate member are made of synthetic plastics and the lid 14 is made of transparent plastics. A pair of supports 25 hold the case in a horizontal position and a hook member 28 allows the case to be hung on a suitable support. A resilient catch member 51, 52 is provided to close the lid.
Patent GB-414806-A (GB)
Title: Lathe centre and centre drilling attachment
IPC: B23B49/04
Filed: 1933-03-10
Abstract: 414,806. Lathe centres and centre drills. COWARD, H., 14, Marley View, Crossflatts, and COWARD, F. M., 37, North Bank Road, Stoney Ridge, both in Bingley, Yorkshire. March 10, 1933, No. 7271. [Class 83 (iii).] For attaching a centre drill b to a lathe &c. centre a<1>, the centre is provided with a screw thread groove a having a pitch about four times its width, and the drill is mounted in a chuck b having a radial pin c engaging the screw thread. A conical bore d in the chuck engages the conical surface of the centre to locate the drill accurately.
Patent GB-240071-A (GB)
Title: Improvements in the manufacture of whole steel wheels and in apparatus therefor
IPC: B23K5/00
Filed: 1925-03-18
Abstract: 240,071. Owen, A. E., and Downs, R. W. March 18, 1925. Wheels.- The proturberances c at the welding junctions of the spokes b with the nave a of an all-steel wheel, are removed by mounting the nave. on a pin d carried by a turret f and feeding the turret so that the spokes move, in turn, axially within a hollow rotating spindle i carrying a cutter h. Stops may be provided to ensure that the spoke being operated upon is in axial alignment with the cutter spindle.
Patent GB-735227-A (GB)
Title: Improvements in or relating to devices for preventing knotting or snarling of cable used on telephone instruments and for other purposes
IPC: H04M1/15
Filed: 1952-03-21
Abstract: 735,227. Preventing slack in cables. ROSE, D. March 17, 1953 [March 21, 1952], No. 7390/52. Class 78 (2). A wire is coiled around a telephone cable to prevent the latter snarling, the wire being formed with V-shaped parts 3 as shown and the cable 10 being slid therein sidewise.
Patent GB-747054-A (GB)
Title: Improvements in or relating to hydraulic cranes
IPC: B66C13/18
Filed: 1954-03-15
Abstract: 747,054. Jib cranes. FORSLUND, J. E. March 15, 1954, No. 7474/54. Class 78 (3). [Also in Group XXIX] In a ram for luffing a crane jib (not shown), fluid is supplied to the power cylinder 1 through a cylinder 19, annular space 18, ports 13 and annular space 12 so raising the piston 2 until a closure member 21 progressively obstructs ports 13 and space 12. The piston is thus gently brought to rest. When the cylinder 19 is opened to exhaust, fluid is released from cylinder 1 through ducts 22, 23 in member 21 and a ball valve 17; the restricted flow through this valve causing the piston 2 to lower slowly. Piston 2 is operatively connected with the jib through a rod 4 which is pivoted to the jib at one end and at the other rests in a spherical seat 3 in the piston 2.
Patent GB-244311-A (GB)
Title: Improvements in steam heated radiators
IPC: G05D23/02
Filed: 1925-03-21
Abstract: 244,311. Still & Sons, Ltd., W. M., and Adamson, A. G. March 21, 1925. Heating vehicles; thermostats.-In a steam-heated radiator, particularly for railway carriages, the inlet and outlet are both at the same end, and steam is carried to the opposite end by a tube surrounding the valve actuating rod. The radiator tube 1 has a cap 3 provided with inlet 3a and outlet 14. A ball valve 4 is mounted in a strainer 11, and is actuated by a wooden rod 5 secured to the cap 2 by an adjustable sleeve 8. The rod 5 has a lower coefficient of expansion than the tube 1, so that the valve is opened when the tube 1 contracts. Steam passes through the tube 5 to the further end of the tube 1, and small holes 12b are provided in the tube for the passage of a small quantity of steam, and a hole 12a for drainage. Specifications 29285/12 and 107,134 are referred to.
Patent GB-756594-A (GB)
Title: Improvements in or relating to preparation of theophylline derivatives
Filed: 1954-03-17
Abstract: The invention comprises 7b - and 7g -hydroxy-propyl theophyllines and their preparation by treating one molar equivalent of theophilline with 1.05 to 1.50 molar equivalents of a 1-monohalogenopropan-2- or 3-ol and an amount of alkali metal hydroxide which is the molar equivalent of the halogenated alcohol used.  The reactants are heated together in water at 50-110 DEG  C. until the halogenated alcohol has reacted completely.  The water is completely removed by distillation under reduced pressure and the residue is extracted with a boiling anhydrous monohydric alcohol containing 2 to 4 carbon atoms.  The hot mixture is filtered and the product which crystallizes upon cooling the filtrate is washed with the same anhydrous alcohol and purified by one recrystallization from an anhydrous monohydric alcohol containing 2 to 4 carbon atoms.  In examples: (1) 7b -hydroxy-propyl theophylline is prepared from 1.5 mols. of anhydrous theophylline, 2.25 mols. of 1-chloro-2-propanol and 2.25 mols. of sodium hydroxide with extraction with, and recrystallization from, anhydrous ethyl alcohol; (2) the same product is obtained using potassium hydroxide (1.1 mol.), 1-chloro-2-propanol (1.1 mol.) and anhydrous theophilline (1.0 mol.); (3) the same product is obtained using sodium hydroxide (0.9 mol.), 1-bromo-2-propanol (0.9 mol.) and anhydrous theophylline (0.75 mol.), purification being effected with anhydrous isopropanol; 7g -hydroxypropyl theophylline is prepared from anhydrous theophylline (0.75 mol.), 3-chloro-1-propanol (1.125 mol.) and sodium hydroxide (1.125 mol.), purification being effected with anhydrous ethyl alcohol.  The compounds of the invention are therapeutically valuable and are suitable for oral and parenteral administration. Specifications 4250/07, [Class 2 (iii)] and 669,070, are referred to.ALSO:A therapeutic composition suitable for oral and parenteral administration comprises a solution of 7-b - or 7-g -hydroxypropyl theophylline in water.  Highly concentrated, stable and neutral aqueous solutions of the preferred 7-b - compound can be prepared, to which can be added other medicinal agents such as strophanthin or rutin.  Such solutions can be sterilized without decomposition and administered in spray, tablet or capsular form. Specifications 4250/07 [Class 2(iii)] and 669,070 [Group IV(b)] are referred to.