baber/WOPTO huggingface dataset:
Patent GB-876997-A (GB)
Title: Improvements in or relating to piezo-electric crystals
Inventor: TINKLER DONALD
IPC: H03H9/05
Filed: 1958-06-24
Abstract: 876,997. Piezo-electric crystals. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. March 5, 1959 [June 24, 1958], No. 20178/58. Class 40(8) A crystal assembly comprises an X-cut piezoelectric crystal bar 1 adapted to vibrate in a longitudinal mode, at an angle to the length of the bar, with an approximately line anode N-N at the middle of the bar, deposited metallic film electrodes 2 on opposite faces of the bar, and a pair of wires 3, 4 fixed to opposite faces of the bar, the wires serving as electrical connectors, constituting the sole support for the bar with reference to support rods 5, 6, and extending substantially in the planes of the opposite faces in opposite directions from the centre of the line node to points beyond the side edges of the bar. The bar 1 can be 0 degrees or a + 5 degrees X-cut bar with a length:width ratio exceeding 5:1, e.g. 10:1. The electrical connector support wires 3, 4 are each of a length about equal to the width of the bar 1 and are soldered to two centrally situated silver spots fired on to the opposite faces 2 of the crystal bar 1, the metallic film electrodes being subsequently deposited over the soldered joints and the outer ends of the wires 3, 4 being soldered to the rods 5, 6 which can be mounted in the footstep of an evacuated envelope.
Patent GB-1009616-A (GB)
Title: Process for preparing polyolefinic textile fibres and like shaped articles
IPC: D06P5/22
Filed: 1963-05-21
Abstract: 1,009,616. Treating polyolefine fibres; films etc. MONTECATINI SOC. GENERALE PER L'INDUSTRIA MINERARIA E CHIMICA. May 21, 1963 [May 24, 1962], No. 20230/63. Heading B5B. Fibres, films etc. which have been produced by the melt extrusion of mixtures of isotactic polyolefines with basic organic nitrogen containing polycondensate are immersed for 2 seconds to 24 hours at a temperature between room temperature and the boiling point of the solvent in a solution containing polyvinyl alcohol and an aldehyde. The polyolefine may be polyethylene, polypropylene (preferred), polybutene-1, polypentene-1, poly-4-methylpentene-1 or polystyrene. The polycondensate may be a polycondensate of epichlorhydrin with an amine, of diglycidylamine with an amine or diamine, of a dihalogen derivative of an aliphatic, cycloaliphatic or aromatic hydrocarbon with a bis - secondary diamine, polyvinylpyridine, or a polyalkylenimine. The treatment with the solution may be carried out before or after stretching the fibres etc. The aldehyde used may be formaldehyde, acetaldehyde, propionaldehyde, acrylaldehyde or butyraldehyde. The fibres etc. may subsequently be treated with dilute aqueous sulphuric acid. The treating solution is preferably aqueous, its polyvinyl alcohol content may be 0À1 to 10% and its aldehyde content may be 0À2 to 20%. Fibres obtained by the process of the invention are receptive to acid, metallized and dispersed dyes and have an affinity for basic and vat dyes. Specifications 950,852 and 992,011 are referred to.
Patent GB-774992-A (GB)
Title: Improvements in or relating to novel chemical compounds useful in the synthesis of lysergic acid and its homologues and process for preparing such compounds
Filed: 1954-10-25
Abstract: The invention comprises octahydro-indolo-quinolines (ergolenes) of the formula <FORM:0774992/IV(b)/1> where R1 is C1-C8 alkyl, and acid additio salts thereof.  These are made by acid hydrolysis of their esters (see Specification 774,991), or of N - acyl - 7 - alkyl - 9 - cyano - ergolenes (see Specification 774,990), or alkaline hydrolysis in the case of the esters.  Examples are given of the preparation of 9-carboxy-7-methyl-10-ergolene (via its hydrochloride) by both methods.  The products may be dehydrogenated to lysergic acid or a homologue thereof as described in Specification 774,984.
Patent GB-773146-A (GB)
Title: Process for the fabrication of plastic substances
IPC: C08L33/20
Filed: 1953-07-23
Abstract: The fabrication of polyacrylonitrile which cannot be melted without decomposition is attained by dissolving the polyacrylonitrile in a melt of a heat-stable polyamide and thereby obtaining a stable melt which can be fabricated, e.g. by spinning into threads or bristles, or drawing into foils, or injecting into moulds.  Alternatively the polyacrylonitrile can be dissolved in the monomer(s) from which the polyamide is obtained and the mixture heated to polymerize the monomers to a melt containing the polyacrylonitrile; 20 parts of polyacrylonitrile are dissolved at 180 DEG  C. in 80 parts monomeric e -aminocaprolactam, 2 parts of adipic acid hexamethylene diamine in 5 parts water are added and the temperature raised to 245 DEG  C. The resultant polymer mixture is spun at 245 DEG  C.
Patent GB-721040-A (GB)
Title: Improvements relating to annular gaskets for flange joints
Inventor: FRYER JOSEPH WILLIAM
IPC: F16J15/12
Filed: 1953-07-24
Abstract: 721,040. Joint-making packing. WALKER & CO., Ltd., J. July 24; 1953, No. 20594/53. Class 122 (3). In an annular gasket a of the kind formed by a length of V-section metal strip b spirally wound, with or without an inlay of asbestos paper c between some of the metal turns, so as to define a longitudinal groove in the inner peripheral face and an opposing rib on the outer peripheral face, the two ends of the metal strip being welded in place to prevent the-turns from unwinding, a metal ring d is provided to fit in the groove and project inwardly to reduce the internal dimension of the gasket. The metal ring d, which serves to prevent the metal strip unwinding should the weld of the first turn be broken and also centralizes the gasket when the latter fits over the spigot i (Fig. 7) of a joint, may conform closely to the internal periphery of the gasket or be bent to form, at intervals, inwardly projecting resilient locating protuberances f. The ends of the metal ring may be joined or left open and the gasket may be formed of metal strip of section such that more than one groove is formed in its internal periphery and a metal ring may be fitted into one or more of these grooves.
Patent GB-275028-A (GB)
Title: Improvements in clips for connecting groups of pipes
IPC: F22G3/00
Filed: 1926-08-20
Abstract: 275,028. Fowler, Sir H., Symes, S. J. and Chambers, H. Aug. 20, 1926. Fire and smoke tube superheaters. - Groups of superheater tubes are supported by clips each of which comprises a number of strips a of steel bent to surround the periphery of two adjacent pipes through an arc of about 90‹ and welded thereto, the part b between the pipes being curved inwardly to provide flexibilty. The adjacent ends of the pieces are welded together to form the complete clip.
Patent GB-1489797-A (GB)
Title: Production of glass fibres
IPC: C03B1/00
Filed: 1975-05-15
Abstract: 1489797 Glass fibre batch addition FIBREGLASS Ltd 28 April 1976 [15 May 1975] 20644/75 Heading ClM The feed to a glass fibre making device contains 1-25% of finely divided fibre cullet having on or about its surface a proportion of non-mineral material and the melt is maintained in an oxidizing condition during the melting operation (e.g. by the addition of NaNO 3 ). The scrap (e.g. from the production of insulating boards or mats) may be heated to cure the binder (e.g. after shredding) prior to feeding into the batch formulation.
Patent GB-437834-A (GB)
Title: Improvements in or relating to electromagnetic track brakes for rail vehicles
IPC: B61H7/08
Filed: 1934-07-14
Abstract: 437,834. Track brakes. E.M.B. CO., Ltd., CADBURY, G. N., and SMITH, S., Moor Street, West Bromwich, Staffordshire. July 14, 1934, No. 20710. [Class 103 (i)] In order to maintain the blocks of an electromagnetic track brake for railway &c. vehicles at a fixed height above the rail surface irrespective of the deflection of the vehicle springs, the brake blocks c at each side of the bogie are attached to a bar d which is suspended by springs e from brackets b supported upon the axle-boxes, while a crossbar f connects the blocks on opposite sides. The blocks may be guided vertically by means of a bar g depending from the side-bars of the bogie frame.
Patent GB-269775-A (GB)
Title: Hygienic strainer
IPC: A01J9/02
Filed: 1926-08-23
Abstract: 269,775. Casey, P., and Moreton, J. Aug. 23, 1926. Lids; strainers and filters.-A cone having an opening in the side covered with gauze a or other straining medium is fitted on the top of a milk pail. The device is provided with a shield b to prevent splashing. The spout of the pail is fitted with a detachable. strainer c.
Patent GB-369846-A (GB)
Title: Improvements in or relating to synchronized clock systems
IPC: G04C13/03
Filed: 1931-07-20
Abstract: 369,846. Electric clocks. INTERNATIONAL TIME RECORDING CO., Endicott, New York, U.S.A.-(Assignees of Allen, R. C.; 2005, Tracy Street, Endicott, New York, U.S.A.) July 20, 1931, No. 20755. Convention date, July 24, 1930. [Class 139.] Synchronizing.-In a synchronized clock system having the secondary clocks in a single series circuit, each secondary has a single non- polarized impulse magnet and the single series circuit includes an impulse accepting and rejecting device (copper oxide rectifier) at each secondary and provides for entire control of the clocks for advancing and synchronizing. The invention is an improvement on the apparatus set out in Specification 370,205. A master clock, fed from A.C. mains through a transformer, and including a copper oxide rectifier, is connected to the single line A of the secondary clocks so that from the hour to the 44th minute past the hour +ve impulses flow over the single series line A at the rate of one a minute, and from the 44th minute to just before the hour +ve minute impulses are on line A. The positive impulses also include the rapid impulses which emanate from the master clock just before the hour to step-on any slow secondaries. Exactly at the hour the first of the -ve minute impulses passes to line A. Specification 236,199, [Class 139, Watches &c.], is referred to. Each secondary clock consists of an impulse magnet 21, copper oxide rectifiers 122A, 122B for permitting the passage of -ve and +ve impulses respectively in the directions indicated, a resistance 200 and a cam 23 moving with the minute hand to control contacts 25 26. 27. Magnet 21 actuates a ratchet and pawl drive as described in Specification 254,269, [Class 139, Watches &c.]. Contacts 26 open at the 59th minute and reclose at the 60th ; and contacts 25 vice versa. Resistance 200 is of such a value compared with magnet 21 that substantially the same current flows through the series circuit of the secondaries whether magnet 21 is in or out of circuit. Clock X is correct so that at the 59th minute cam 23 opens contacts 26 and closes 25 so that the +ve stepping-up impulses pass over circuit 122B, 200, 25, 27, A without affecting the clock. At the hour the first -ve impulse over circuit A, 122A, 21, 201, A restarts this clock on time, opening contacts 25. Clock 7 is fast so that contacts 25 are already closed, the clock remaining in this condition (unaffected by +ve impulses) until the first +ve impulse at the hour restarts the clock. Clock Z is slow so that when the rapid stepping-on +ve impulses from the master are sent, contacts 26 are still closed. Hence these +ve impulses act on magnet 21 over circuit A, 201, 21, 26, 27, A until cam 23 opens contacts 26. This clock then awaits the first -ve impulse at the hour.
Patent GB-1344532-A (GB)
Title: Articulated vehicles
IPC: B61F3/12
Filed: 1971-04-19
Abstract: 1344532 Articulated railway vehicles SOC NOUVELLE DES ATELIERS DE VENISSIEUX 19 April 1971 [6 Feb 1970] 20757/71 Heading B7L  An articulated vehicle has two half-chassis 1 and 2, with respective wheel sets 4 and 5, coupled together by a ball joint 3 and supported by an intermediate chassis 6 by horizontal bearing surfaces 23; lateral guide means being provided and consisting of, for each halfchassis, apair ofwear plates 11, flexibly mounted at 13 on the intermediate chassis by means of rubber blocks 14 and lying at 45 degrees to the means longitudinal vertical plane 12 of the vehicle, and a pair of rollers 20 mounted on the half-chassis and engaging the vertical faces of plates 11. The rollers and wear plates lie approximately in the horizontal plane of the universal joint and the rollers lie within the width of the half-chassis 1 and 2. Reference has been directed by the Comptroller to Specification 1,238,939.
Patent GB-154673-A (GB)
Title: Improvements in or relating to locks or fasteners for doors or the like
IPC: G09F3/03
Filed: 1919-08-25
Abstract: 154,673. Ellis, E. E. Aug. 25, 1919. Cotters.-A spring cotter b for use with a cotter bolt c used for fastening wagon &c., doors is inserted and withdrawn by a screw-jack i, the shoulders on the cotter links being shaped so that the resistance to insertion and extraction is equal or unequal.
Patent GB-240142-A (GB)
Title: Improvements relating to the manufacture of seamless tubes
IPC: B28B21/50
Filed: 1925-08-20
Abstract: 240,142. Soc. Anon. Eternit Pietra Artificiale. Sept. 18, 1924, [Convention date]. Addition to 225,543. Moulding pulp. - The machine forming the subject of the parent application is modified by supporting the revolving cylinder F, Figs. 2 and 3, between a cylinder G and a single pressure cylinder D actuated by toothed gearing O. The pressure imparted as before to the pressure roller by hydraulic rams is controlled automatically by connecting the interior of the hydraulic cylinders C to a chamber 3 enclosed by a piston 2 sliding in a small cylinder 1, the communication between this chamber and an outlet 9 being controlled by the position of the piston 2, which is operated from an indicator 8 which registers the thickness of the pipe wall. The indicator is actuated by a chain 15 passing over a fixed pulley 14 and secured to a frame 12 which rests against the pipe wall and is pressed downwards as the pipe wall increases in thickness. The device for automatically controlling the pressure may be used in apparatus in which more than one pressure roller G is used.
Patent GB-671840-A (GB)
Title: Improvements in and relating to film splicing apparatus
IPC: G03D15/04
Filed: 1949-08-11
Abstract: 671,840. Film-splicing apparatus. JIROUCH, A. V. Aug. 2, 1950 [Aug. 11, 1949], No. 20947/49. Class 98 (ii). A film-splicing machine comprises two separately movable supports for each receiving an end of one of the two films being spliced, and means carried by one of the supports adapted when the support is moved to contact and apply adhesive to a surface of the film carried by the other support. Preferably each support is provided with means for trimming the film ends upon relative movements of the two supports and a scraper located in the path of a film carried by one of the movable supports to shave the splicing face of the film. As shown, a support 4 of part-cylindrical section is mounted on a shaft 7 journalled in a basemember 1 and carries a block 15 having a curved mating surface by which the film end is clamped when a plate 11 hinged on the support at 9 is engaged by a pivoted latch 14. A similar support 17 having a film clamping block 19 latched by a catch 20 is vertically slidable in guides 3 and may be depressed against the action of springs 24, 25 by rotation of an eccentric shaft 22 engaging the bottom of the support. By clamping the films on the supports with the rockable support 4 resting against a stop 44 and then depressing the support 17 by rotating the hand knob on shaft 22, guillotine elements 26, 27 and 4<SP>1</SP>, 19 trim the film ends. The support 17 is then raised and the support 4 rotated backwardly so that simultaneously the upper face of the film end on the step member 26 is shaved by adjustably mounted knives 29, 30 and the lower face of the other film end in the support 17 is coated with adhesive by a roller 33 driven by gearing from the rotary movement of the support 4. This support is then returned to its rest position against the stop 44 and the support 17 is then again depressed to clamp together the adhesive-bearing and shaved film ends between the members 15, 26 to make a joint. Specification 648,142 is referred to.
Patent GB-1104429-A (GB)
Title: Method and system for feedwater treatment
IPC: B01J47/04
Filed: 1965-05-18
Abstract: Solids and dissolved oxygen are simultaneously removed by mixed bed ion exchange resins which have been treated with a ferrous or manganous salt, an alkali to precipitate ferrous or manganous hydroxide in the pores of the resin, and a high molecular weight acid such as pectic acid or lignin sulphonic acid which converts the cation-exchange resin back into the hydrogen form but does not react with the metallic hydroxide.  The method is applicable to boiler feed systems having also steam de-aerators during start-up when steam is not available.
Patent GB-460242-A (GB)
Title: Improvements in and relating to calcium sulphate plasters
IPC: C04B24/06
Filed: 1935-07-24
Abstract: Calcium citrate, calcium malate, or calcium succinate is used as a retarder in a plaster mix consisting essentially of calcium sulphate hemihydrate.  The mix may contain sand or pumice as a filler. Specification 458,767 is referred to.
Patent GB-1337521-A (GB)
Title: Process for the preparation of linear polyamides containing sulphonate groups
IPC: C08G69/42
Filed: 1972-05-05
Abstract: 1337521 Sulphonate-group-containing polyamide FARBWERKE HOECHST AG 5 May 1972 [6 May 1971] 21097/72 Heading C3R [Also in Divisions B5 and C2] A linear polyamide (P) containing sulphonate groups is made from a mixture comprising (A) an aromatic diamine, (B) an aromatic dicarboxylic acid dichloride, and (C) where Z is an aromatic radical and n is 0 or 1, the mixture being polycondensed in solution and then treated with a base; the mixture contains, based on total acid component, 2-15% moles (C). Also present in the mixture may be an aliphatic and/or cycloaliphatic diamine and/ or dicarboxylic acid dichloride, each in quantity up to 10% mole of total diamine or acid dichloride respectively. (A) may be 4,4<SP>1</SP>-diamino- 2,2<SP>1</SP> - dimethyldiphenyl, 4,4<SP>1</SP> - diamino - diphenylmethane, -diphenylethane, or -benzophenone; 4,4<SP>1</SP> - diaminodiphenyl ether, sulphide, or sulphone; 1,5-diaminonaphthalene; or m-phenylenediamine. (B) may be the dichloride of 1,4-naphthalenedicarboxylic, 1,3- diphenoxypropane - 4,4<SP>1</SP> - dicarboxylic, 5- methylisophthalic, 5 - tert - butylisophthalic, or iso- or tere-phthalic acid. In (C), Z may be a radical derived from benzene, naphthalene, or diphenyl. The solvent for the reaction may be, e.g. N,N-dimethylacetamide, N-methylpyrollidone, or tetramethyl urea. The polycondensation may be performed at - 20‹ to + 10‹ C. The base may be LiOH or Ca(OH) 2 . Polyamide (P) may be precipitated by pouring the solution into, e.g. water. (P) may then be dried and dissolved in an amide solvent also containing CaCl 2  or LiCl, and this solution, or the original solution of unprecipitated (P), may be dry or wet spun into filaments. Film or sheet may also be formed.
Patent GB-188397-A (GB)
Title: Combined sensitized card or plate holder and focal positioning member for use in cameras of the kind employing an opaque sleeve
IPC: B65D6/16
Filed: 1921-08-09
Abstract: 188,397. Stratton, E. F. Aug. 9, 1921. Magazine hand cameras with hand plate-changing and means for preparing negatives.-Relates to plate or card holding-devices for cameras in which the plates cr cards are manually placed in and removed from the focal plane, more particularly cameras with a light-tight sleeve at the rear through which the hand may be inserted to change the plate or card, and to transfer it after exposure to a developing tank opening into the base of the camera, and consists in providing within the camera (1) frictional surfaces to engage the edges of the plate or card and hold it in focal position, and (2) a frame, or stops, to arrest the plate or card in focal position. In the form shown, a camera 1 has attached to its side wall strips 6 the rear edges of which lie in the focal plane of the camera lens. A plate or card, inserted in the camera by hand through a sleeve 5 at the rear, is pressed against the rear edges of the strips and is held by strips of frictional material 8, such as velveteen, glued to the side wallsin rear of the strips 6. In modifications, a rectar.gular frame, or top and bottom stops, replace the strips 6. A further modification constructed of sheet metal comprises a frame 11<1>, Fig. 5, against which the plate or card is pressed, and side walls 13, rigid with the frame 11<1>, carrying velveteen 14 and flared outwardly at their rear edges, the whole being secured in any manner in the camera. A developing and fixing tank 2, fitted with a lifting hook 3, opens into the base of the camera through a slotted light-tight cover 4. According to one Provisional Specification, the frictional grip may also be provided by roughening the surfaces of the holding frames.
Patent GB-1026095-A (GB)
Title: Bulb supports
Inventor: OLIVER LOUIS JOSEPH
IPC: F21L14/00
Filed: 1964-05-22
Abstract: 1,026,095. Lamps mounted on helmets. JOSEPH LUCAS (INDUSTRIES) Ltd. March 17, 1965 [May 22, 1964], No. 21188/64. Heading F4R. [Also in Division H2] A light for attachment to a policeman's helmet consists of a transparent or translucent dome 19 to which is secured a reflector 16 carrying a socket 17 for an electric light bulb 18, second reflector 21 being mounted in the top of the dome above the bulb. A plate 11 is connected to the dome by three spaced arms 13, the reflector 16 being carried by the arms. The plate 11 carries a terminal 12 and a second plate 23 insulated from the plate 11 and carrying a second terminal 22. The plate 15 engages the base contact of the bulb 18 and the reflector 16 engages the shell of the bulb. The terminals 12, 22 are connected to a battery through a flasher nut. The assembly is secured to the helmet by a bolt 24 and nut 25, a sealing member 26 being interposed between the helmet and the base of the dome.
Patent GB-703375-A (GB)
Title: Improvements relating to electron discharge devices employing velocity modulation ofan electron stream
IPC: H03D7/20
Filed: 1948-02-28
Abstract: 703,375. Velocity-modulated tubes. LELAND STANFORD JUNIOR UNIVERSITY, BOARD OF TRUSTEES OF. Feb. 28, 1948 [April 20, 1939], No. 21405/51. Drawings to Specification. Class 39(1) The subject-matter, a reflex tube in which the reflected beam passes through a portion of the resonator separate from that part containing the incident beam, is identical with Figs. 1 and 2 of Specification 545,146, but the claims differ. Specifications 517,264, 523,712, 530,785, 703,324 and 703,325 also are referred to.
Patent GB-243111-A (GB)
Title: Improvements in or relating to cut-off valves and similar devices
IPC: F16K31/53
Filed: 1924-09-11
Abstract: 243,111. Fischbach, R., and Schaeffer & Budenberg Ges. Sept. 11, 1924. Actuating-mechanism.-A screw-down valve or similar device having alternative rapid and slow movements has the nut supported in a bridge member A, as shown, carried by toggle levers B, C, B', C<1>. In normal use the spindle H has a slow movement by rotation of the nut by the hand-wheel K. For rapid movement, a pull on the lever F, by reason of the gearing E, E', bends outwards the centres of the toggles, and allows the, upper portions to collapse, thus closing the valve quickly. The reverse movement opens the valve quickly.