baber/WOPTO huggingface dataset:
Patent GB-371402-A (GB)
Title: Improvements in or relating to hatch covers
IPC: B63B19/24
Filed: 1931-01-15
Abstract: 371,402. Ships' hatch-covers. ISHER. WOOD, SIR J. W. and ISHERWOOD, W., Raggles Wood, Chislehurst, Kent. Jan. 15, 1931, No. 1419. Addition to 252,254, [Class 113 (i); Ship and boat fittings &c.]. [Class 113 (i).] In a sectional metal hatch-cover of thecharacter described in the parent Specification the sections are so interconnected or connected to the hatch beams or coaming that the locking of one section effectively maintains the remaining sections in position on the hatch. Various constructions embodying this feature are described. As shown in Fig. 1 the metal hatch sections A are provided with L-shaped slots 10 which engage with pins 10<1> secured to the hatch beam B. Locking is effected by dropping in one section directly and making a wedge 4, Fig. 4, movable in a slot 3 in the hatch beam and locking it when against the wedge 1 by a pin 5. Alternatively a locking-bar may be used. The T-shaped slots may be cut in the sections or in pieces attached to their sides. In a modification the sections are locked to one another by interengaging tongues and grooves arranged on their abutting edges. Specifications 285,628, [Class 113 (i), Ship and boatfittings &c.], and 353,239 are referred to.
Patent GB-393222-A (GB)
Title: Improvements in or relating to the production of hollow moulded articles
IPC: B29C33/76
Filed: 1933-01-16
Abstract: 393,222. Disintegratable moulding- cores; mould-opening devices. S O C. ITALIANA PIRELLI, 21, Via Fabio Filzi, Milan, Italy. Jan. 16, 1933, No. 1469. Convention date, Jan. 15, 1932. [Class 87 (ii).] Dispersible cores for the manufacture of rubber and like articles are formed of a hydrated crystalline salt which is soluble in its water of crystallization upon being heated. Sodium hyposulphite, sodium thiosulphate, sodium sulphate decahydrate, hydrated sodium carbonate, borax, sodium acetate, crystallized' calcium chloride, potassium sodium tartrate, disodium phosphate and sodium ammonium phosphate are given as examples of materials. Mixtures of the above ingredients can be used and a proportion of inert filling-material, for example, moulding or siliceous sand, clay, diatomaceous earth, sawdust, powdered cotton waste, and the like. Specific examples of actual mixtures used include equal parts by weight of sodium: thiosulphate and either sand or moulding sand, or of sodium thiosulphate, sand, and moulding sand. These mixtures disintegrate at about 49‹ C. Another example of a mixture disintegrating at 32‹ C., comprises two parts by weight of sodium sulphate decahydrate, two parts sand, and one part moulding sand. A third example disentegrating at 58‹ C. comprises two parts by weight of sodium acetate, twoparts sand and one part moulding sand. A fourth example disintegrating at 125‹ C. comprises two parts by weight of borax, two parts sand and one part moulding sand. As applied to the manufacture of a core for a superballoon tyre cover, the material for a half core is placed in the jacketed lower half 1 of a mould round a central metal bush 8, which is positioned by the boss 7. Rings 11, 12 are then placed in position, and finally the topmember 2 is assembled or the pin 10 and rotated to distribute the material with or without applied pressure. Heat is then applied to the jackets to melt the material sufficiently to sinter it into a coherent body. To open the mould the screws 13 are used to prise the top mould member from off the ring 12 and similar screws then used in the holes 14 to prise the part core and ring 11 from the mould member 1. Fig. 2 shows the assembled core, the two bushes 8 being placed end-to-end and clamped by a screwed ring 18 to the rotary metal sleeve 16. The cores may be removed from the articles by breaking them up mechanically or by water dispersion in cases where the heating would mar the finished product. Specifications 350,227 and 381,658 are referred to.
Patent GB-929046-A (GB)
Title: Process for curing unsaturated polyester resin compositions
Inventor: LAUTENSCHLAGER WALTER
IPC: C08L67/06
Filed: 1962-01-16
Abstract: Unsaturated polyesters are cured with an additional ethylenically unsaturated monomer using as a catalyst system a mixture of an organic hydroperoxide and at least one of cobalt bimaleate or cobalt bicitraconate.  The catalyst system exemplified is a mixture of 1-hydroperoxy-11-hydroxydicyclohexyl peroxide, 1,11-bis-hydroperoxydicyclohexyl peroxide and cobalt dimaleate. Unsaturated polyesters used are (1) maleic acid, phthalic acid and propylene glycol (1, 2) condensate dissolved in styrene and (2) fumaric acid/diethylene glycol condensate together with the tetra-allyl ether of tetramethylolglyoxaldiureine and styrene. Hydroquinone is used as inhibitor.  Both the cobalt bimaleate and bicitraconate polymerise in the course of the reaction.
Patent GB-470850-A (GB)
Title: Improvements in respirators and the like
IPC: A62B23/02
Filed: 1936-01-17
Abstract: 470,850. Respiratory appliances. SADD, J. A. Jan. 17, 1936, No. 1529. [Class 81 (ii)] A respirator or the like embodies a filter connected to a face-piece a through an inhaling valve g and comprising two pads b<1>, b<2> of filtering or purifying medium enclosing between them an air space f through which air passes to the face piece. As shown, in plan view from below, the pads are stitched together around their edges and are spaced by a perforated corrugated celluloid or other spacing member e. Each pad is enclosed in a fabric cover to which the pad is secured by cross-stitching, quilting, or stapling. A pair of filters b<1>, b<2>, are connected to the face piece a through inhaling valves g and carry loops c through which the head-straps d are passed. An exhaling valve i is provided on the underside of the face-piece. The filtering material may be wool or cotton and may be corded or mixed with asbestos fibre. A layer of active charcoal may be used.
Patent GB-1128353-A (GB)
Title: A method of masking a surface
IPC: B05D1/32
Filed: 1966-01-12
Abstract: 1,128,353. Etching. NORTH AMERICAN AVIATION Inc. 12 Jan., 1966 [1 April, 1965], No. 1531/66. Heading B6J. A surface is masked, e.g. prior to etching, by mounting a mask in contact with the surface, the surface having one or more portions not contacted by the surface of the mask (e.g. those portions corresponding to apertures in the mask), the contact pressure between the mask and the surface being sufficiently light to permit capilliary action of wax between the surface of the mask and the surface to be masked, partially immersing the surface and the mask in liquid wax so that the said one or more portions are above the liquid level and holding the surface and the mask in this position for a time sufficient for wax to rise by capilliary action and cover the whole of the surface apart from the said one or more portions. The mask may be of an acid-resistant material, e.g. iridium, platinum or gold plated stainless steel. The wax may be a mixture of Ceresin wax, paraffin wax, and beeswax and may contain a fluorescent dye. Prior to masking the surface to be masked may be dipped in a solution of dichlorodimethylsilane or similar protective glass coating material to render the surface lyophobic for the wax proper. The masked surface may be etched as described in Specification 1,116,558.
Patent GB-1342221-A (GB)
Title: Roller construction and arrangement
IPC: B65H5/06
Filed: 1972-01-13
Abstract: 1342221 Rollers MATHIAS BAUERLE GmbH 13 Jan 1972 [29 Jan 1971] 1737/72 Heading F2U [Also in Division B8] A folding machine comprises two pairs of parallel rollers, each pair being constituted by one steel roller 13, and a friction roller having a steel core 17 and a friction shell of polyurethane foam 19, 20 having a density of about 0À4 g./cm<SP>3</SP>.
Patent GB-972671-A (GB)
Title: Purification of pyrrolidone
Inventor: NEY WILLIAM O
IPC: C08G69/24
Filed: 1961-01-16
Abstract: 2-Pyrrolidone is purified by crystallization, at below ambient temperature, from an aromatic hydrocarbon solvent, which is liquid at -20 DEG  to -35 DEG C., for example an alkyl benzene, particularly toluene and, also, o-xylene, m-xylene, and mixed xylenes having a low concentration of the p-isomer. The process is carried out by dissolving the pyrrolidone in the solvent and cooling to a temperature generally below 0 DEG C., particularly to between -20 DEG to -35 DEG C.  The method enables virtually all traces of impurities other than water, particularly unsaturated substances, to be eliminated. The removal of water can be achieved, for example, by azeotropic distillation, either before or after the crystallization. To obtain a highly pure pyrrolidone, several crystallizations may be necessary. The purified pyrrolidone may be polymerized (see Division C3). Potassium pyrrolidone may be prepared by reacting the purified pyrrolidone with potassium at 60 DEG  to 70 DEG C.ALSO:Polypyrrolidone may be obtained by admixing anhydrous, purified 2-pyrrolidone (see Division C2) with potassium pyrrolidone and, after solution, with acetylpyrrolidone.  Polymerization is substantially complete after 48 hours.  The reaction mass is broken up, comminuted in distilled water, and then washed with water and methanol.  After drying in vacuo at 70 DEG C., the product has a melting-point of about 260 DEG C. and an inherent viscosity (in m-cresol) of 2.8.
Patent GB-555321-A (GB)
Title: Improvements in erecting means for gyroscopes
IPC: G01C19/50
Filed: 1942-02-10
Abstract: 555,321. Gyroscopic apparatus. BENDIX AVIATION CORPORATION. Feb. 10, 1942. No. 1763. Convention date, Feb. 11, 1941. [Class 97 (iii)] In erecting means for a gyro vertical or artificial horizon having a rotor mounted for angular movement about two mutually perpendicular axes at right angles to the vertical spin axis a mercury or other mass, by moving within a hollow capsule or container rotating at reduced speed about the spin axis renders the rotation variable whenever the gyroscope deviates from the vertical position, and thereby produces torques which erect the spin axis. As shown in plan, a frame 19 is rotatably mounted, by a ball bearing 20, on the spindle 12 of the rotor (not shown) and is driven from the rotor spindle through a spring-pressed friction shoe 23. The speed of the frame 19 relative to the rotor spindle is substantially reduced by an escapement 36, 37 carried on an arm 32 and actuated by a wheel 30 rolling upon the rotor casing 34. A capsule 40 containing a globule of mercury 41 is carried by the frame 19. When the spin axis is vertical, the friction drive through the shoe 23 varied by the centrifugal effect of a weight 39 is balanced by the retarding effect of the escapement to maintain the speed of the frame 19 substantially constant irrespective of the speed of the rotor. If the axis of the rotor departs from the vertical, an acceleration force is produced which urges the mercury globule alternately against the leading and trailing ends of the capsule during successive halfrevolutions of the frame 19 and produces irregular rotation thereof resulting in the application of torques which restore the spin axis to its vertical position and at the same time eliminate the irregular rotation. Specification 441,439 is referred to.
Patent GB-1170904-A (GB)
Title: Improvements in Manufacture of Empty Packets from Thermoplastic Sheet Material.
Inventor: VALE ARTHUR HUGH
IPC: B29C65/04
Filed: 1966-01-14
Abstract: 1,170,904. Making plastics sheaths; seaming non-metallic sheet material. ABEL MORRALL Ltd. 9 Jan., 1967 [14 Jan., 1966], No. 1781/66. Headings B5D and B5K. [Also in Division B8] Spaced blades 18 (Fig. 2) first form simultaneous welds between two superimposed layers of thermoplastic material, and a second set of welds, intersecting the first, is then formed by spaced blades 20, the welds being such that the closed figure or figures formed by the seals can be torn out of the surrounding material. In the machine illustrated the blades 18, 20 are highfrequency welding electrodes pressed into the material to reduce it. A cushion formed of sheets 26 of different electrical characteristics from the polyvinyl chloride forming the sheets 10, 11 serves as a cushion during welding. The sheets 10, 11 are fed intermittently below the welding blades 18, 20 which are disposed to form a sheet of sheaths 25 (Fig. 6) which is then punched to form portions 27 from which the welds have been cut away, and which have suspension holes. The sheets are then torn into strips comprising each a single row of sheaths, and the end portions 27 are flexed in alternate directions by paddles 29 to make them easy to open. One of the two flaps forming the extensions 27 may be cut away, the other being either folded in or used for suspending the sheet. One of the sheets may be opaque, and the other transparent, and one may be highly polished so that it clings to itself when folded. The sheets are fed by reciprocating grippers (23) (Fig. 1, not shown).
Patent GB-822791-A (GB)
Title: Rubber vulcanization on a continuous core
Filed: 1958-01-20
Abstract: In apparatus for continuously vulcanizing rubber applied to a core, e.g. a cable or wire, by the procedure involving passing the rubber coated core successively through an upper, steam-heated vulcanizing column and a lower, water-containing cooling column, there are provided a vessel, of substantially larger cross-section than that of the columns, in communication with the steam column and with the water column, and, in connection with the cooling water, a valve device responsive to variation in the steam-water level to prevent its surging.  With the apparatus of Fig. 1, a core c is coated in a device 14 with a vulcanizable composition s, and the coated core is passed down a column 12 containing steam under pressure and containing, below the level l, cooling water; the water outlet of the column 12 is in connection by way of a pipe 50 with a discharge valve 52 and by way of pipes 50 and 58 with the lower end of a closed tank 56, and the steam in the column 12 is in connection by a conduit 60 with the upper end of the tank 56, the steam-water level in the tank 56 being indicated by L: tendency to variation in the level L causes movement of a diaphragm 104 of a valve device 54, and such movement causes adjustment in outflow of <PICT:0822791/IV (a)/1> water at 52 to maintain the level l constant.
Patent GB-455689-A (GB)
Title: Improvements in or relating to the manufacture of tarnish and corrosion proof articles
IPC: C25D5/36
Filed: 1935-01-21
Abstract: A pen-nib or other article is made of an alloy containing 18 per cent chromium, 8 per cent nickel, 2 1/2 per cent molybdenum and the remainder iron and is coated with gold.
Patent GB-223785-A (GB)
Title: Improvements in or relating to skips or buckets for use on aerial ropeways and the like
IPC: B65D88/58
Filed: 1924-01-24
Abstract: 223,785. Sturgess, H. A. Jan. 24, 1924. Operating doors by treadle, and lever and link mechanism.- The door or doors, or pivoted bucket segments 8, 9 of an overhead travelling skip are operated by a lever or other member 17 held in the closing position by a catch 23. The bucket segments 8, 9 are pivoted at 10. 11 in a frame 1 - - 7, and tend to open by gravity. They are closed, when the lever 17 is depressed by engagement with a fixed cam-rail 19, by linkage 12 - - 17 which includes a cross-bar 14 sliding in guides in the frame. A roller 22 on the frame engages the rail to prevent swinging. The catch 23 is pivoted at 24 on the frame and is moved into the locking position when the bucket segments are closed, by means of a connection 27 with the cross-bar 14. An arm 29 on the catch 23 may engage a fixed abutment 30 near the track, permitting the skip to discharge automatically.
Patent GB-208410-A (GB)
Title: Improvements in or relating to the manufacture or production of transparent, semi-transparent or translucent paper
IPC: B31B19/00
Filed: 1923-01-23
Abstract: 208,410. Dickinson & Co., Ltd., J., and Ellens, W. E. Jan. 23, 1923. Envelopes. - In the production of transparent, semi - transparent, or translucent paper, or the like, the paper is subjected to a pressing or calendering operation before the treatment in known manner with a suitable medium. In the manufacture of " window " or " panel " envelopes, in which the paper blanks are first formed, these are fed by tapes 29, 32 between calender rolls 2, 3, the upper roll 3 of which carries dies 23, Fig. 4, co-operating with discs 22 to effect the localized pressing or calendering. The blanks are lifted from a wad 34, Fig. 1, by suction pipes 37. which swing forward to carry the blanks to the tapes, cams 67, Fig. 3, actuating feelers 65 to ensure correct positioning of the blanks. Cams 14 normally take the pressure of the roll 3 on the roll 2, and are arranged to transfer the pressure to the dies when the latter are in engagement with the discs 22. The pressed blanks are delivered from the machine down a slope 79 and between guides 80 to the board 78. Brushes 72, 73 are provided for the rollers 2, 3.
Patent GB-246518-A (GB)
Title: Improvements in and relating to the forced lubrication of crank shafts
IPC: F16C3/14
Filed: 1926-01-25
Abstract: 246,518. Junkers, H. Jan. 24, 1925, [Convention date]. Channels in cranks and journal bearings.-Oil is supplied under pressure to the interior of a six-throw crankshaft through a passage 27 in a bearing 11 for the, central circular crank-web 8, a transverse groove 28 being provided in the bearing so that a recess 30 in the surface of the web is in communication with the supply during a comparatively large portion of each revolution. The inlet to the recess 30 is provided with a non-return valve 31 which tends to be closed by centrifugal-force. A passage 34 leading from the recess 30 through the adjacent pin 3 communicates with the surface of that pin through a passage 35 and with the surface of the next pin 2 through passages 36, 38, 39, 40 and an arc-shaped pipe 37, whereby the deterring effect of centrifugal-force on the flow of oil is avoided. Oil passes from the recess 30 to the surface of the pin 4 by passages 41 - - 45, the passages 41 - - 43 in the web 8 being arranged polygonally, so as to have the general form of an arc. Oil passes from the passage 44 to the surface of the pin 5 through passages 46, 48, 49, 50 and an arc-shaped pipe 47. The surface of the end pin 1 is supplied with oil under pressure from a passage 13 in the end journal bearing 10 through passages 14 - - 18, and the pin 6 at the other end is supplied in a similar manner from the end journal bearing 12. According to the Specification as open to inspection under Sect. 91 (3) (a), the groove 28 may be either in the bearing 11 or on the web 8, or both. This subject-matter does not appear in the Specification as accepted.
Patent GB-663380-A (GB)
Title: Improvements in or relating to electric-acoustic apparatus
IPC: G10L15/00
Filed: 1949-01-26
Abstract: 663,380. Electromagnetic relays. DREYFUS, J. A. Jan. 26, 1949. No. 2206/49. Class 38 (v). [Also in Group XXXVIII] An electro-magnetic differential relay comprises a twowinding coil 8 suspended in the air gap of a permanent magnet 9 by a system of blade springs 10. Thus, depending on the relative strength of the currents in the windings 8, contacts 11, 12 or 13, 14 will be closed.
Patent GB-555427-A (GB)
Title: Improvements in or relating to the mounting of photographic prints and analogous articles
IPC: G03C11/02
Filed: 1942-02-19
Abstract: 555,427. Brooches. HARPER, H. Feb. 19, 1942, No. 2246. [Class 43] [Also in Group XV] A photographic print or other representation 4, which is intended to be carried on the person to serve as an identity disc &c. is protected by embedding it wholly by a moulding process in a frame 5 formed of a transparent plastic material, such as polymethyl methacrylate. The frame has plane front and back surfaces, so that two photographs placed back to back or a photograph backed by a name, address and identity number may be visible from the two sides. A boss 6 may be moulded on one face for mounting the article on a pin to serve as a brooch or for the attachment of a chain.
Patent GB-939651-A (GB)
Title: Device for ascertaining the blood-permeation conditions in the human or animal body
IPC: A61B5/026
Filed: 1960-01-21
Abstract: 939,651. Surgical tests. FRITZ SCHWARZER G.m.b.H. Jan. 21, 1960 [Jan. 27, 1959; June 19, 1959; Oct. 19, 1959 (2)], No. 2253/60. Class 81 (2). [Also in Group XXXVI] An apparatus for the determination of blood distribution, by measurement of the voltage drop across test areas, uses a single A.C. supply of between 10 and 20 kc/s., derived from an oscillator 13, the output being applied by electrodes 15 across the part 14 under test. Voltage drops across intermediate parts are tapped off by pairs of electrodes 16, 17, 18 and are passed through transformers 11 to amplifiers 25 and thence through rectifiers 10 to output terminals 22 for connection to indicating equipment. In order to compensate for variations in the supply, such as might result from the application of the test electrodes, each pair of electrodes has, associated with it, a transformer 19, connected in the main supply lead, the output from which, after correction by a phase-shifting network 24, 23, is applied through an adjustable potentiometer 3 to the measuring circuit at the point 8. The level of the component so introduced is observed by passing it through one half of amplifier tube 25 to an electronic indicator 6.
Patent GB-469555-A (GB)
Title: Apparatus for splitting and decorticating bast and leaf fibres
IPC: D01B1/14
Filed: 1936-01-24
Abstract: 469,555. Splitting and decorticating bast and leaf fibres. FIBRE-PROCESSING, Ltd. Jan. 24, 1936, Nos. 2338 and 2339. Convention dates, Jan. 31, 1935 and Nov. 18, 1935. [Class 120 (i)] Apparatus for obtaining fibres from New Zealand flax (phorinium tenax) and like fibrous plants comprises a pair of oppositely rotating drums 3, 4, Fig. 3, having transverse rows of radially projecting and closely packed needles 22, Fig. 5, the needles of one drum being in circumferential alignment with each other and with the needles of the other drum and the rows of needles of the two drums passing alternately right through the material from opposite sides. The drums 3, 4 are formed with radial slots 15 which accommodate slidable comb blocks comprising a carrier 16, Fig. 6, and needle clamps 17, 19, the needles 22 being mounted in the space 21 and projecting between drum segments 28. Channels 30, Fig. 11, are provided in each drum to accommodate the needles of the co-operating drum. Rollers 25 are mounted on the members 16 and engage a race formed by ring members, the race being concentric with the drums over the greater part of its length so that the needle points 22 are normally retracted but having a cam surface so that the needles are projected outwards over the stripping portion of the apparatus. The material is passed successively through feed rollers 1, 2, the stripping drums 3, 4, feed rollers 7, 8 and clearing conveyers 11, 12. Licking rollers 5, 6, 9, 10 comprising moulded strips of rubber 42 of channel section, Fig. 8, are provided to clear the drums 3, 4 and the rollers 7, 8. The conveyers 11, 12 comprise sprocket chains having rubber licking vanes 48 of channel section and formed with serrated edges. Water is sprayed on to the material while between the conveyers 11, 12. The distance between opposing rows of needles is adjustable and the drums 3, 4 and conveyers 11, 12 are driven more quickly than their respective pairs of feed rollers.