baber/WOPTO huggingface dataset:
Patent GB-870764-A (GB)
Title: Lamp testing apparatus
IPC: H01K3/30
Filed: 1958-12-24
Abstract: 870,764. Photoflash lamps. SYLVANIA ELECTRIC PRODUCTS Inc. Dec. 24, 1958 [Dec. 26, 1957], No. 41776/58. Class 9(2). Apparatus is provided for testing photoflash lamps, to determine whether the bulb is properly positioned in its base, and comprises a holder for supporting the lamp, a plurality of electrically conducting fingers, means for disposing the fingers to encompass the lamp, an electric circuit including the fingers as contacts and means responsive to deflection of at least one of the fingers by the lamp to cause ejection of the lamp from the holder. Each lamp 10 is inserted in jaws 12, 14 pivotally mounted on a conveyer chain 24 and provided with intermeshing gears 26, 28. Pins 30 projecting from the jaws are connected by a spring 32, which holds the jaws in the support position. An apertured guide 34, Fig. 5, is attached to one pin 30, and receives the second pin 30. Each jaw assembly carries a wheel 40 and has two wheels 42 attached to the chain 24, the wheels 40, 42 being guided in tracks 44, 46 respectively, Fig. 2. Similar mechanisms operate on lamps carried by the upper and lower chain, Fig. 5. Indexing means (not shown) advance five lamps at a time to the testing assembly 52, Fig. 2, where the continuity is checked and the testing assembly 54, where the concentricity is tested. A shaft 76 is operated by a cam follower 86 to place the bulbs in sockets 106, where the end contact 13 presses against a contact rod and the metal base is in contact with the socket wall and hence the lamp is included in an electrical circuit. If the resistance of the lamp is too high or too low contacts in an electrical 'memory' circuit are closed' to bring about ejection of the lamp when it reaches the ejection station. Simultaneously if one of the fingers 162 is deflected a second 'memory' circuit is closed and the faulty lamp later rejected for lack of concentricity. Specification 870,765 is referred to.
Patent GB-1522605-A (GB)
Title: Preparation of fibrous sheet product
Inventor: MARTIN G
IPC: D04H1/728
Filed: 1974-09-26
Abstract: 1522605 PTFE electrolysis diaphragm IMPERIAL CHEMICAL INDUSTRIES Ltd 19 Sept 1975 [26 Sept 1974] 41873/74 Heading C7B [Also in Divisions B5 C3 and D1] An electrolytic cell membrane is composed of a sheet of polytetrafluorethylene fibres pressed and sintered together (see B5 abridgment). Examples 2, 3, 8, 9, 10, 11 and 12 give details of the voltage achieved on the electrolysis of brine in a cell equipped with such a membrane.
Patent GB-1235506-A (GB)
Title: Internal combustion engine comprising a detonation wave attenuator
Inventor: BODINE ALBERT GEORGE
IPC: F02B23/00
Filed: 1968-09-05
Abstract: 1,235,506. I. C. engine combustion chambers. A.G. BODINE. Sept. 5, 1968 [Jan. 16, 1968], No.42244/68. Heading F1B. A sound attenuator in the combustion chamber comprises an apertured barrier 17 between the central portion of the chamber and a space 18 concentrically surrounding the barrier between the barrier and the chamber wall. The apertures 21 and the space 18 are dimensioned to dissipate sonic energy at the frequencies of the detonation vibrationsproducedin the chamber. The barrier 17 may be formed on the piston 12 by machining or welded thereto. The barrier may comprise slotted members (17a, 17b), Fig.4 (not shown), on the piston and cylinder head, the space (18) surrounding the barrier being formed by a recess in the cylinder wall. Circular holes (21), Fig.6 (not shown), may form the barrier apertures. The barrier 17 and the space 18 may be formed in the piston 12, Fig. 10 (not shown). The spark plug 14 may be replaced by a fuel injector.
Patent GB-423750-A (GB)
Abstract: 423,750. Ticket-printing apparatus. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, and PETITHORY, E. A., 14, Vanbrugh Park, Blackheath, both in London. Sept. 19, 1933, No. 25913. [Class 100 (iv)] [See also Group XIX] Type-wheel machines; ; hammer-impression arrangements; roller inking - arrangements.- In ticket printing and issuing machines, particularly of the portable kind, means are provided for printing a permanent striprecord in code form of all tickets issued and of other operations of interest, the printing being effected in ink on translucent paper or chemically on a suitably prepared sensitive strip, so that it may be decoded by a lightsensitive device, for use in the statistical apparatus described in Specification 423,737, [Group XIX]. Cylinders CY, CL are coupled by gearing SU, SR to a ticket printing and issuing machine so that during the setting of the machine for printing the fare value and class, the cylinders are rotated to bring an appropriate row of bosses RU, UN thereon into a position where they may be inked by a roller RO and engaged by the printing- platen PR over which passes the record strip ST. A second ink roller RL of larger diameter on the same spindle SE is at the same time drawn across the faces of plungers PL, PU, which may be raised to produce marks on the strip indicating respectively a change from one journey to the next, or from one fare stage to the next. The operation of the plunger PU is automatically effected by a cam CA lifting a lever LV, while the plunger PL is operated by a link CC connected to a lever LE. The ink rollers RO, RL and the printing- platen are operated by toggle links LI, LN and a link CE coupled to the ticket-issuing machine. The record strip ST is fed by a sprocket-wheel SO which is rotated by a ratchet and a rocker driven from the members LI, CA.
Patent GB-1071432-A (GB)
Title: Machine tool control system
Inventor: WILKINSON BERNARD HALL
IPC: B23H7/18
Filed: 1964-10-16
Abstract: In a control system for a machine tool, e.g. in electrochemical machining, the tool (or workpiece) is first advanced by a digital system and then, when a preset condition of a parameter is reached, by an analogue system.  In the main embodiment the parameter is distance of the tool from an initial position, detected by counting pulses from a Moire fringe device.  Two number stores are provided, and when the count reaches that in the first change over from digital to analogue control is effected by relays; when the number in the second store is reached the tool is retracted and machining stopped. Digital control.  In this mode pulses from the Moire device are compared with those from a pulse generator, the rate of which is set by a potentiometer, modified by a measurement of the conductivity of the continuously flowing electrolyte. The output of the comparator is fed to a counter which determines whether the tool is in advance or arrear of the desired instantaneous position and effects correction via a valve controlling hydraulic actuation of the tool.  Velocity feedback is provided and the hydraulic piston is damped preferably by signals from an accelerometer attached to it.  Analogue control.  In this mode the hydraulic valve is controlled in response to measurements of the current through the electrolyte and its conductivity, compared with a reference voltage representing desired gap width.  Other Applications mentioned are a grinding process in which change-over is effected in response to a predetermined load on the driving motor or output of a strain gauge on the wheel mounting, and resistance welding.
Patent GB-1125127-A (GB)
Title: Improvements in or relating to fluid control valves
IPC: F15B13/04
Filed: 1965-10-07
Abstract: 1,125,127. Valves. ROBERT BOSCH G.m.b.H. 7 Oct., 1965 [9 Oct., 1964], No. 42517/65. Heading F2V. The spool 5 of a valve has pistons 6, 7 defining actuating chambers 9, 10 and a control chamber 8. Within the latter the spool carries a D- shaped valve 28 having a semi-cylindrical face engaging the wall of the bore 2. In the position shown, a pressure inlet 22 communicates via chamber 8 with a port 23 leading to one side of a motor 23<SP>1</SP>, whilst the other side of the latter communicates via port 25 and the valve 28 with an exhaust. On moving the spool to the left, valve 28 interconnects ports 23, 24 and port 25 is opened to chamber 8. A pin 35 engaging a recess 36 in the spool prevents rotation of the latter. The D-valve 28 may be loaded by a spring 27 and/or fluid pressure. In the embodiment of Fig. 3, not shown, the spool (48) carries two D-valves (49, 50) controlling the communication between an inlet (47), work ports (45, 46) and exhaust ports (43, 44). In Figs. 4 and 5 (not shown), the spool (57) carries two pairs of D-valves (59, 61) and (58, 60), each pair corresponding to the pair of Fig. 3. In Fig. 6, not shown, the D-valve (73) has a central partition (74) and controls the communication between an inlet (84), work ports (80, 83), and exhaust ports (81, 82), the latter containing a restriction (82<SP>1</SP>).
Patent GB-1279774-A (GB)
Title: Method of sintering ceramic materials
IPC: C04B35/64
Filed: 1970-09-08
Abstract: 1279774 Thoria ceramics AUSTRALIAN ATOMIC ENERGY COMMISSION 8 Sept 1970 [16 Sept 1969] 43027/70 Headings C1A and C1J Ceramic materials, e.g. thoria gel which tend to crack when sintered through pore neck closure in the outer regions of the material are prevented from doing so by being sintered in steam, a preferred heating cycle being given which reaches 1150‹ C.
Patent GB-1479789-A (GB)
Title: Apparatus and method for applying a release material to a heated fuser roll of an electrostatic copying machine
IPC: G03G15/20
Filed: 1975-10-21
Abstract: 1479789 Heat fixing toner images XEROX CORP 21 Oct 1975 [10 Jan 1975] 43157/75 Heading G2H A pad 12 containing a powdered polyolefin, e.g. a polyethylene wax, is pressed against a heated fuser roll 10 of an apparatus for heat fusing toner images 17 to copy sheets 16, the polyolefin being fusible at the temperature of the heated roll 10. The roll 10 may be formed of metal with a polytetrafluoroethylene layer 21 on its surface.
Patent GB-1408935-A (GB)
Title: Imide-containing blends and polymeric compositions prepared there from
IPC: C08G73/12
Filed: 1972-09-18
Abstract: 1408935 Epoxy resin composition; epoxy acrylate copolymers GENERAL ELECTRIC CO 18 Sept 1972 [19 Nov 1971] 43193/72 Headings C3B and C3P A composition comprises: (A) either an epoxy resin (I) or a reaction product (II) of an epoxy resin with an unsaturated monocarboxylic acid; and (B) either (a) a bisimide of general formula in which R<SP>111</SP> is or halogenated derivatives thereof; Q is selected from C 2-20  alkylene, cycloalkylene, alkylcycloalkylene, xylylene wherein Z is a divalent aliphatic cycloaliphatic or araliphatic radical (having 1-8 carbon atoms, -O-, -CO-, -S-, -SO 2 -, X is H, halogen or methyl and m is 0 or 1; or (b) the reaction product of trimellitic anhydride with an organic diamine and having the formula: wherein Q<SP>1</SP> has the same definition as Q above and n is 1 or more. I may be a diglycidyl ether of bisphenol A and II may be a reaction product thereof or of an epoxidized olefin with (meth)- acrylic acid. Up to 80% by wt. of II may be replaced by another ethylenically unsaturated compound. Examples of the second component (B) are a bismaleimide: or an amide-imide diamine: The composition may contain a curing catalyst, e.g. 0À01-5% by wt. of (A) plus (B). It may also contain up to 300% (based on the wt. of (A) plus (B)) of a filler, e.g. glass fibres.
Patent GB-1206123-A (GB)
Title: Apparatus for electrolytic machine profiling
Inventor: ILIEV KRUSTYU VLADOV
IPC: B23H5/08
Filed: 1967-09-22
Abstract: 1,206,123. Electrolytic machining apparatus. ZENTRALEN NAUTCHNO-IZSLEDOVATELSKI INSTITUT PO TECHNOLOGIA NA MASHINOSTROENETO. Sept.22, 1967 [Sept.24, 1966], No.43345/67. Heading C7B. In apparatus for electrolytic machine profiling comprising a tool formed by a rotatable profiled disc 3 the workpiece 7 is supported on a table 9, 11 which may be positioned to provide a predetermined working gap between the workpiece and the tool; the table being mounted for pivotal movement about pivot 10, and for movement parallel to the axis of the tool by means of a dovertail joint by which the table part 11 is slidingly connected to support 16, and the support 16 is in turn mounted for linear movement towards and away from the tool on base 18 via bearings 17. Such linear movement is produced by means of electromagnet 20, and means incorporating a micrometer 14 with a vernier scale are provided for predetermining the distance to be moved by the support towards the tool. The tool and the workpiece are connected to a D.C. current supply 1 such that the workpiece and tool form anode and cathode respectively, connection to the tool being made by means of brushes 2 in contact with the shaft 2A on which the tool is mounted, and means is provided by which electrolyte containing a suspension of microgrinding powder may be supplied under pressure to the gap between workpiece and tool, e.g. electrolyte from tank 25 may be supplied to the gap via pump 23, supply pipe 26 and nozzle 4. A second delivery pipe 27 for the electrolyte may be incorporated to provide continuous mixing of the suspension of micro-grinding powder within the electrolyte. The tool 3 can be adjusted vertically by means of handle 12, bevel gears 22 and spindle 21.
Patent GB-1534635-A (GB)
Title: Bolt-seating plug
IPC: E04B1/41
Filed: 1977-10-19
Abstract: 1534635 Screw sockets SUMITOMO RUBBER INDUSTRIES Ltd 19 Oct 1977 [21 Oct 1976] 43511/77 Heading F2H A bolt socket A, e.g. for use in securing fenders to jetties, comprises a cylindrical body 1 of rigid plastics having an axial bore 1d of slightly larger diameter than the bolt B to be inserted therein and an enlarged inner end portion 1c defining a polyhedronal inner chamber 1e into which the bore 1d opens and which houses a metal nut 2 and a soft plastics ring 3 both of external cross-sectional shape corresponding to the chamber 1c cross-section, the ring 3 having a bore smaller than the crest diameter and larger than the root diameter of the bolt thread to form a locking element, a plastics retainer 4 holding the nut 2 and ring 3 in the chamber 1e, and a sealing element 5 at the entry of the bore 1d to seal against the bolt shank. The sealing element 5 is a rubber ring retained by a metal ring 6. The body 1 has external annular ribs 1i, longitudinal ribs 1j, and end flanges 1b, 1g, and is intended to be embedded in a concrete structure C when the latter is cast.
Patent GB-957440-A (GB)
Title: New co-polymers
Inventor: AMBLER ARNOLD EDWIN
IPC: C08F220/18
Filed: 1960-12-19
Abstract: Copolymers of vinyl toluene and butyl methacrylate, the limiting number average molecular weight of which is between the values Mmax and Mmin determined by the equations Mmax= 3000+8x2 and Mmax=3Mmin where x is the percentage of butyl methacrylate, may be prepared by emulsion polymerisation of the monomers in the presence of alkyl mercaptan, the number of moles of alkyl mercaptan used lying between the limits Ymax and Ymin given by the equations Ymax=3Ymin and Ymin=11/(273-12x+x2) where x is the percentage of butyl methacrylate. The vinyl toluene may be m- or p-vinyl toluene or mixtures thereof. The methacrylate may be n-, sec- or t-butyl methacrylate. The mercaptan may be t-dodecyl or t-amyl mercaptan. Polymerisation may be effected in the presence of initiators, e.g. potassium persulphate, and dispersing agents, e.g. potassium stearate and Turkey red oil, to give latices which may be flocculated by the addition of hydrochloric acid.  Examples describe the preparation of latices by the copolymerisation in aqueous emulsion of a commercial mixture of m- and p-vinyl toluenes with (1) n-buytl methacrylate in the presence of potassium stearate (formed in situ), potassium persulphate and t-dodecyl mercaptan; (2) n-butyl methacrylate in the presence of potassium persulphate, potassium stearate and t-dodecyl or t-amyl mercaptan; (3) isobutyl methacrylate in the presence of potassium stearate, potassium persulphate and t-dodecyl mercaptan; and (4) n-buytl methacrylate, ammonium stearate (formed in situ), hydrogen peroxide and t-dodecyl mercaptan. The polymers are soluble in white spirit and may be used in the preparation of dispersible pigment compositions, e.g. for alkyd resin paint media. Specification 936,911 is referred to.
Patent GB-1188858-A (GB)
Title: Sulphur-Containing Heterocyclic Compounds
Inventor: BROWN JOSEPH PATRICK
IPC: C08K5/00
Filed: 1967-09-26
Abstract: 1,188,858. Sulphenamide derivatives. MONSANTO CHEMICALS Ltd. 3 Sept., 1968 [26 Sept., 1967], No. 43770/67. Heading C2C. [Also in Division C3] Novel compounds of the general formula where R<SP>1</SP> represents hydrogen or an aliphatic or cycloaliphatic group, R<SP>2</SP> represents an aliphatic or cyclo-aliphatic group or R<SP>2</SP> and R<SP>1</SP> together with the nitrogen atom form a saturated ring, and R<SP>3</SP> represents an aliphatic or aromatic group, are prepared by reacting an N-halo-amine of formula R<SP>1</SP>R<SP>2</SP>NX, where X is halogen, with a mercaptan of formula in the presence of an acid acceptor which is preferably the amine corresponding to the haloamine reactant. The compounds are accelerators for the vulcanization of rubbers.
Patent GB-1476745-A (GB)
Title: Ammoxidation process and catalyst
IPC: C07C255/51
Filed: 1974-10-10
Abstract: 1476745 Ammoxidation process SUN VENTURES Inc 10 Oct 1974 [10 Oct 1973] 43869/74 Heading C2C [Also in Division B1] Nitriles are prepared by the reaction of m- or p-xylene with ammonia and oxygen at 375‹ to 500‹ C. to give isophthalonitrile and terephthalonitrile respectively, in the presence of a catalyst which is an alkali metal vanadium bronze promoted with a niobium oxide and supported on a carrier comprising alpha-alumina. Suitably, the feed gas has an ammonia/xylene molar ratio of from 2-0 : 1 to 6 : 1 and comprises 3-10% vol. xylene, 7-20% vol. ammonia and 10-20% vol. oxygen. The ammoxidation may be carried out in a fixed bed or fluidized bed with p-xylene being reacted at 400-450‹ C. and m-xylene at 375-425‹ C. The reaction pressure may be 1 to 5 atmospheres and the contact time 0À1 to 10 seconds. The reactant stream may be recycled. The process has a high selectivity for dinitriles and produces only small amounts of benzonitrile.
Patent GB-881270-A (GB)
Title: Improvements in or relating to reels for magnetic tape
IPC: G11B15/67
Filed: 1959-12-29
Abstract: 881,270. Bobbins &c. GELOSO, G. Dec. 29, 1959, No. 44125/59. Drawings to Specification. Class 120(3) Magnetic tape is secured on a double-flanged reel, without interruption of winding or unwinding operation, by radial restraint due to frictional engagement with one or more projections, e.g. ribs, grooves, knurls, serrations, formed on the internal face of one or both flanges or material, e.g. rubber, adhered thereto. The projections may be distributed over selected e.g. radial or spiralled, zones of the flange face(s).
Patent GB-1099740-A (GB)
Title: Resilient strips
IPC: A47C7/22
Filed: 1966-10-04
Abstract: 1,099,740. Upholstery. PIRELLI S.p.A. Oct. 4, 1966 [Oct. 12, 1965], No. 44262/66. Heading A4M. A resilient webbing strip of rubber or synthetic resin has parallel, longitudinal ribs 7-11 spaced apart by at least 0.4 cm. and containing elastic cords 2-6 with an elongation at break of not less than 25%. The cords may be of nylon or other textile material and may comprise twisted filaments. A single strip (25, Fig. 3) may be criss-crossed about and between the sides and ends of a tubular frame (26). Alternatively (Fig. 5) the strip (35) may be anchored to a wooden frame (31) by U-shaped fasteners (32, 32<SP>1</SP>) with pointed free ends.
Patent GB-1183746-A (GB)
Title: Storage Information Checking Devices.
IPC: G11B20/18
Filed: 1967-09-28
Abstract: 1,183,746. Stored data checking devices. FUJITSU Ltd. 28 Sept., 1967 [28 Sept.. 1966], No. 44297/67. Heading G4C. A circuit arrangement for checking the storage of information in magnetic storage means includes two shift registers and a counter for generating two check digits for the stored information. As described, in a parity checking system associated with a data storage device such as a magnetic disc, drum or card store, for each block of N digits of R bits each to be stored two R-bit check digits P + Q are generated, each bit of the first check digit P being produced from the corresponding bits of all N digits and each bit of the second check digit Q being produced from corresponding digits of each successive group of R digits (e.g. the first Q bit being produced from digits 1, R + 1, 2R + 1 &c.). In the magnetic drum memory shown (Fig. 2) wherein R = 8, input digits comprising 8-data bits A-H and one conventional (odd) parity bit P are fed to a buffer register 3 from where the data bits are passed in parallel by way of gates 13 to a shift register 21 and from there in series to a writing circuit 36 associated with the drum 39. The data stages A-H of the register 3 are also connected to respective binary stages PA-PH of a counter circuit 11 whereby the parity bits P are developed. The input parity bit P is connected to one input of an exclusive -OR circuit 5 connected in a closed loop with an eight stage shift register 7 wherein the parity bits Q are developed. At the end of a block of N digits, the parity digits P and Q are themselves passed in succession through gates 14, 15 respectively to the register 21 for writing on the drum 39. When a data block is to be read from the drum 39, read circuit 35 passes the data digits in turn by way of shift register 21 (where serial to parallel conversion is effected) and lines 22 to the buffer 3 from where they are transmitted in parallel mode on output lines 1. Parity means 23 are provided to add a conventional parity bit to each data digit on its way to the buffer register 3. At the same time as the data digits are being transmitted, parity digits P and Q corresponding to the previously generated digits P and Q are again generated by the same circuit means 5-8 and 11 respectively. At the end of reading a block of N data digits, the newly generated check digits P and Q are compared in turn by comparator 34 with the corresponding digits P and Q read from the drum.
Patent GB-1068399-A (GB)
Title: Luminescent materials
IPC: C09K11/82
Filed: 1965-10-20
Abstract: A crystalline, single phase rare-earth activated calcium vanadate phosphor has the composition Ca3-3xIn2xHx(VO4)2, where x is 0.01 to 0.3 and H is a vacancy in the crystal; the rare earth In may be neodymium pracsodymium, holmium, enbium, thulium or yttenbium emitting in the infra-red, or samarium, europium, terbium or dysprosium emitting in the visible spectrum.  The materials may be prepared by heating in air stoichiometric mixtures of the oxides &c., at 600-800 DEG  C., cooling, grinding, and re-firing in air at 1000-1350 DEG  C., and single crystals, e.g. for lasers, grown by slow pulling from the melt; distribution coefficients (1.01-1.08) are given for neodymium oxide in the calcium vanadate between the solid and the liquid.  The emission spectrum, and decay rates, are given for the neodymium phosphor. In an example, a laser was prepared 0.64 in diameter, 2 inches long, polished ends coated with silver, one end reflective, one end 5% transmissive, and operated at 135 DEG  K using a pulsed helical xenon flash lamp, giving coherent emission at 1.063 micron above a 3000 joule threshold.ALSO:A crystal of a rare earth activated calcium vanadate phosphor is pulled from a melt at a rate of 0.64 2.54 cm/hr.  The phosphor has the composition Ca3-3xIn2xHx(VO4)2 where x is 0.01-0.3, H is a vacancy in the crystal, and In is neodymium, praseodymium, holmium, erbium, thulium, ytterbium, samarium, europium, terbium, or dysprosium.