baber/WOPTO huggingface dataset:
Patent GB-1394358-A (GB)
Title: Installation for determination of concentrations of components  in a solution
IPC: G01N27/416
Filed: 1973-09-05
Abstract: 1394358 Through flow concentration cell STAMICARBON BV 5 Sept 1973 41786/73 Heading G1N The difference in ion concentration between an electrolytic solution and a reference solution is determined using a through flow cell in which the two solutions flow past opposite sides of an ionexchange diaphragm and then into electrical contact with respective identical reference electrodes and wherein the volume of the compartment in which the electrolytic solution contacts the diaphragm is between 1 and 50 mm<SP>3</SP> and the contact time is less than 10 seconds. Preferably the contact time is less than one second, the electrolytic solution is the effluent of an ion-exchange chromatograph and the standard solution has the same constitution as the element. The ion-exchange diaphragm 6 is clamped between two cell halves 4, 5 which define compartments 6, 7 for electrolytic solution and reference solution respectively. The compartment 7 may be considerably larger than 6. The solution flow through the cell from inlets 1 and 2 respectively and thence to identical reference electrodes 14, 15 immersed to the same depth in the respective solution. The potential difference between these electrodes is measured and recorded. The reference electrodes may be calomel with internal salt bridge. The diaphragm may comprise a cation exchange resin when the effluent is from a cation exchange column and an anion exchange resin when an anion exchange column has been used.
Patent GB-950749-A (GB)
Title: Improvements in or relating to rotary plug valves
IPC: F16K5/20
Filed: 1960-12-05
Abstract: 950,749. Valves. W. HARTMANN. Dec. 5, 1960 [Dec. 8, 1959], No. 41810/60. Heading F2V. The plug 2 of a rotary, spherical valve is engaged by sealing rings 10 carried by annular elements 8 which are mounted in sleeves 25 so arranged that, after removal of a cover 6, the sleeves can be moved away from the plug to an extent sufficient to permit withdrawal of the plug from the housing when the plug is in the open position. As shown, the sleeves 25 are externally screw-threaded to engage screwthreaded bushes 27 in the housing and their inner ends have slots 35 whereby they may be turned by a suitable tool. Extensions 26 of the sleeves 25 are sealed by rings 34 and the elements 8 carry sealing rings 33 in annular grooves which coact with annular projections on the sleeves 25. To enable an effective seal to be made irrespective of the direction of applied fluid pressure the internal and external diameters of the grooves are made larger and smaller, respectively, than the effective internal and external diameters of the rings 10. In a modification, the rings 25 are made slidable in the housing, are urged towards the plug by springs or by grease or fluid pressure introduced into spaces 36, and are secured in normal operative position by U-shaped plates engaging external grooves in the rings and retained by the cover 6. Alternatively the grooves may be engaged by bolts.
Patent GB-1197567-A (GB)
Title: Polyamides
Inventor: LEEMING PETER ALFRED
IPC: C08L77/00
Filed: 1966-09-20
Abstract: 1,197,567. Antistatic polyamides; polysiloxane compositions. IMPERIAL CHEMICAL INDUSTRIES Ltd. 4 Sept., 1967 [20 Sept., 1966], No. 41861/66. Headings C3R and C3T. 0À1 to 20 wt. per cent of a block copolymer containing siloxane and oxyalkylene segments is incorporated in fibre forming polyamides as an antistatic agent. Specified polyamides are nylons 6 and 66. In the preferred block copolymers the segements are linked by a direct Si-C linkage. Reference is made to Specifications 1,015,611 and 983,850 for their description. The polyamide may also contain heat stabilizers, e.g. Cu salts, antioxidants, mould release agents, pigments and delustrants, e.g. TiO 2 .
Patent GB-1132706-A (GB)
Title: Improvement in relation to coupler and drawgear components for railway vehicles
Inventor: LEVIE MAX HUBERT PROPHET ALEXA
IPC: B61G9/04
Filed: 1965-07-25
Abstract: 1,132,706. Railway vehicle buff and/or draw gear. F. H. LLOYD & CO. Ltd. 23 June, 1966 [23 July, 1965], No. 41982/67. Divided out of 1,132,705. Heading B7T. A rail vehicle draw-bar 17 has an auxiliary spring 19 pressing against an end-plate 25 housing a main spring, and a sleeve 35 with an integral nut head 47 is adjustably threaded onto the bar 17 so as to leave an axial gap with the plate 25. When the coupler head is moved up or down or laterally the spring 19 controls the pivoting movement.
Patent GB-1099467-A (GB)
Title: Apparatus for detecting a break in elongate material
Inventor: DUNK HENRY JOHN
IPC: B41F33/18
Filed: 1964-10-16
Abstract: 1,099,467. Feeding webs. A. C. DIBLEY & CO. Ltd. Oct. 14, 1965 [Oct. 16, 1964], No. 42289/64. Headings B6B and B6C. [Also in Divisions D1 and H2] Apparatus for detecting the movement of an elongate material such as web, wires, strands and filaments comprises an electric crystal pickup 2, a flexible element 2H arranged to contact the material 2J, whereby signals produced by the rubbing contact of the element 2H with the moving material are transmitted by the element 2H to the pick-up for conversion into electric signals. These signals are applied to an amplifier, the output from which controls the opening and closing of a relay in the circuit of an electric drive for the material 2J, in such a manner that the relay remains de-energized and the circuit closed when a signal is applied to the amplifier, and the relay is energized to open the circuit when the signal ceases; due, for example, to a break in the material or the halting of the movement thereof. The amplifier (Fig. 13) comprises one or more transistorized amplifying stages, the output from which is fed to a switching transistor which in turn operate a reversal transistor, the collector current of which energizes the coil of a relay which actuates contacts for opening and closing the aforesaid drive circuit.
Patent GB-1197436-A (GB)
Title: Gas Supply Couplers and like Devices
Inventor: BASS PATRICK
IPC: F16L39/00
Filed: 1966-09-23
Abstract: 1,197,436. Pipe couplings. UNITED GAS INDUSTRIES Ltd. 22 Sept.. 1967 [23 Sept.. 1966], No. 42454/66. Heading F2G. In a gas pipe-line coupler, which has a first seating portion on which a first accessory can be seated so as to provide a closed gas path from an entrance passage through the first accessory to an intermediate passage and a second seating portion so as to provide a closed gas path from the intermediate passage to an exit passage, means (6, 13); Fig. 1 (not shown) can be positioned so as to prevent gas escaping from the coupler, at positions normally occupied by the accessories, when the accessories are not present. The accessories may be a cylindrical or plane filter 15 and a pressure governor having diaphragms 20, 21 which bear on a valve pad 23 to control the gas flow. A cap (13), Fig. 1 (not shown) may replace the governor to interconnect the intermediate and exit passages. The intermediate and exit sections may be arranged coaxially and terminated in non- coincident plane surfaces. The joint between the governor and coupler may include 0-rings.
Patent GB-973416-A (GB)
Title: Improvements in prefabricated concrete parking structures
IPC: E04H6/08
Filed: 1960-12-12
Abstract: 973,416. Multi-storey garages. TISHMAN RESEARCH CORPORATION. Dec. 12, 1960 [Dec. 15, 1959], No. 42668/60. Heading E1A. A multi-storey garage comprises a number of flat concrete slabs 28, 30 and ramp slabs 24, 26 supported on columns 22. Each flat slab is supported by a single central column and each ramp slab which is 1¢ times the width of a flat slab is supported by two columns midway of its longitudinal edges. Each ramp slab has a horizontal portion which abuts flat slabs and an inclined portion which is connected to an inclined portion of an adjacent ramp slab. Each column 22, Fig. 6, is provided with reinforcement 32 which projects at its upper end and is passed through metal sleeves 76 in a slab 28 and is secured by nuts 40 to a base plate 34 of an upper column. Flat slabs are secured to each other and to ramp slabs by nuts and bolts 62, Fig. 7, and metal loops 58 which project into recesses 56 in the slabs. As shown in Fig. 2, the floors in the right hand half of the garage are intermediate in height between those in the left hand half. Metal railings 85, 86 and concrete railings 96, 98 are provided.
Patent GB-1479945-A (GB)
Title: Facsimile systems
IPC: H04M11/06
Filed: 1974-10-03
Abstract: 1479945 Facsimile systems RICOH CO Ltd 3 Oct 1974 [4 Oct 1973] 42871/74 Heading H4F A facsimile system incorporating two transceiver units connected by a telephone line comprises control means responsive to a breakdown in communication to reset the system to its unactuated state. The control means include a hang-up detection circuit 6, Fig. 1, and means associated with the recorder 4 and reader 5 for detecting the absence of a copy medium or original document respectively. Logic circuits 7 and 8 receive inputs, from the reader 5 and recorder 4 respectively and from the hang-up detecting circuit 6. When a hangup occurs or a signal from the document detection means in either the recorder or reader, indicating the absence of a respective copy or original, the respective logic circuit emits a signal which disconnects the telephone line and changes the recorder or reader to a high speed mode to return to its state of readiness, and actuates warning means 9. The hang-up detection circuit uses three methods, Figs. 2, 3 and 4 (not shown), based on the facts that: the polarities of the telephone lines are reversed when the called system is hung-up; continuous transmission of a carrier is interrupted when one subscriber hangs-up; when a telephone circuit is established so is a closed loop by a hybrid coil but this loop is opened upon the occurrence of a hang-up. In practice all three methods are used since each method may only detect a hang-up in one of the called or calling system. The circuit of Fig. 2 (not shown), only detects a hang-up in the called system by emitting a signal (H.U.-1) when the polarity on the telephone lines (L1) and (L2) is reversed. The circuit of Fig. 3 (not shown) only detects a hangup in the calling system. The carrier is amplified and filtered, converted to a D.C. signal and passed to a threshold circuit (608) to a logic gate (G). The circuit of Fig. 4 (not shown) is suitable for use in relatively short telephone lines. A method sensitive to the engaged tone and operative in response to hang-ups in either the called or calling system may be employed. Fig. 6 shows the reader unit incorporating document detecting means. Light from a source 20 is reflected off a document 15 and mirror 22 on to a detector 23 which generates the picture signal. The absence of a document causes light to pass along a fibre optic 24 to a second detector 25. Oscillators 29 and 30 control the speed of a drive motor 16 at a normal or a fast rate. A similar arrangement is provided on the recorder, Fig. 7 (not shown). The oscillators are selected by a switch rel actuated, by a relay RE in response to the outputs detecting either the absence of a document or a hang-up, to change the motor speed to rapidly eject the document and return the system to its unactuated state.
Patent GB-1322788-A (GB)
Title: Methods of forming electrical connections
IPC: H01L21/607
Filed: 1970-09-08
Abstract: 1322788 Semi-conductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 8 Sept 1970 [11 Sept 1969] 42943/70 Heading H1K Contact areas of a semi-conductor device are connected to attachment points of supply conductors by wires, the pairs of device contact areas and associated attachment points defining Ines all of which pass through a commons centre and at least some of the apirs of points being spaced at different distances from the common centre. The wires are bonded by a tool arranged so that movement between successive bonds comprises a rotation of the device and supply conductors about the centre and, if necessary, a radial displacement of the tool. In a first embodiment, Fig. 6 (not shown), each wire connection is of the same length and the contact areas are arranged in straight lines along the edges of the wafer with constant angular displacement. In a modification, Fig. 7 (not shown), the contact areas have constant spacing. The wire connections along one side of the wafer may be of one length while those on the opposite side are of a greater length, the contact areas of these latter connections being set further in from the edge of the wafer, the resulting edge strip being utilized for integrated components such as resistors, Fig. 8 (not shown). The common centre may be outside the wafer for a device comprising a series of photosensitive elements, Fig. 9 (not shown). Alternate long and short connections may be provided to increase the contact density, Fig. 10 (not shown). The supply conductors may comprise a lead frame assembly to one portion of which the device wafer is soldered, the wafer and connections being subsequently potted, Fig. 11 (not shown). The encapsulation may also comprise a flat pack. A machine for simultaneously making a pair of wire connections on opposite sides of the centre, Fig 12 (not shown), comprises a member having two clamps into which are inserted lengths of connection wire by known apparatus, the clamps then being positioned at the rerequired distance from the centre by means of a cam which is geared to a second cam determining the spacing between associated bonding tools having pairs of wedges which bond the wires to the contact areas and supply conductors. The positioning of the various parts of the machine may be effected by numerical control after an initial manual alignment step.
Patent GB-1077803-A (GB)
Title: Improvements in or relating to feedback control systems
Inventor: LEWIS DWIGHT CHARLES
IPC: G05D23/24
Filed: 1965-10-11
Abstract: 1,077,803. Automatic temperature control of enclosed spaces. PENN CONTROLS Inc. Oct. 11, 1965, No. 42999/65. Heading G3R. A system for controlling the temperature of an enclosed space comprises an electro-thermal actuator 18 operating on the control means 51 of a furnace supplying heat to the space, the energization of the heater 11 in the actuator being under the control of a silicon controlled rectifier 12, the firing points of the rectifier 12 being controllable by the output of a bridge 40 which includes a thermistor 50 responsive to the actual temperature of the space being heated and a variable resistor 48 for setting the desired temperature of the space, the bridge including a second variable resistor 41 the slider of which is operated by the actuator 18. Thus any variation from the set temperature of the space will cause the impedance of a transistor 31 to vary so altering the time constant of the charging circuit of a capacitor 20 whereby the firing points of the silicon controlled rectifier 12 will be controlled to energize the heater 11 of the actuator 18 to restore the temperature of the space to the set value.
Patent GB-1011236-A (GB)
Title: Commutating switch device
Inventor: EVANS DAVID SILVESTER
IPC: H01H11/00
Filed: 1962-11-16
Abstract: 1,011,236. Electric selective signalling systems. BRYANS Ltd. Sept. 13, 1963 [Nov. 16, 1962], No. 43536/62. Heading G4H. A shaft position digitizer comprises a first wiper W100, Fig. 2, which marks one of ten conductors 20-29 to specify which tenth of a revolution the wiper lies in, a second wiper W10 which marks one of ten conductors 10-19 wound like a multi-start screw thread to specify the position of the wiper W10 within the particular tenth of a revolution that it lies in, and a third wiper W1 similar to the second W10.
Patent GB-1181896-A (GB)
Title: Mould and Core Foundry Sand Blowing Machine
IPC: B22C15/24
Filed: 1967-09-26
Abstract: 1,181,896. Moulding machines. SHERWIN-WILLIAMS CO. 26 Sept., 1967 [28 Sept., 1966], No. 43699/67. Heading B3F. In a foundry sand mould or core blowing machine the blowing head comprises a cylindrical chamber 50 in which are continuously rotated blades 64, 67, 69 and 70 that sweep the entire interior surface of said chamber to prevent caking of the sand at blow-holes 48 in the blow plate 28 or in dead spots in the chamber. The blades are rotated by an electric motor 57 through reducing gear 56 mounted on a support plate 13 of the chamber. The support plate includes mounting facilities for a high-pressure air blow valve (74), (Fig. 2, not shown), and mounting components 75 and 78 are provided on the support plate 13 and wall 41 of the chamber, respectively, by which means a fill tube 77 and exhaust valve and filter 79-83 may be interchangeably connected. The blowing head is mounted on the frame of a machine (Fig. 1, not shown) that is pivotable about trunnions 5 between a horizontal and vertical position. The frame comprises rods (9), (10), (18), (19) along which the blowing head can be adjusted by a piston-cylinder 96 towards and away from a pneumatic ram (26) that presses a mould or core box assembly (34) against the blow plate 28. A sand hopper 90 feeds sand into the fill tube 77 by way of a piston-cylinder 87 operated valve 85.
Patent GB-870978-A (GB)
Title: Glass composition
IPC: C03C3/11
Filed: 1959-12-28
Abstract: 870,978. Glass. PITTSBURGH PLATE GLASS CO. Dec. 28, 1959 [Jan. 2, 1959], No. 43999 /59. Class 56. Glass with a high strain point and low coefficient of expansion contains :- The glass is rolled into plate form, ground, polished and annealed. Details of times and temperatures are given.
Patent GB-1372337-A (GB)
Title: Exposure control means
IPC: G03B27/80
Filed: 1972-09-22
Abstract: 1372337 Exposure control circuit FUJI PHOTO FILM CO Ltd 22 Sept 1972 [22 Sept 1971] 44081/72 Heading G2A A photo-electric circuit 11, 12 generates a current in accordance with the light passing through a negative to be printed, a Miller integrating circuit 10, 13, 14, 15 integrates the current, and a comparator 8 terminates exposure when the output of the integrator reaches a reference level E 2 . Preferably the circuit comprises two photo-conductors 11, 13, both of which receive light passing through the negative, variable resistors 12, 14, an operational amplifier 10 and a variable capacitor 15. The sensitivity of the print material may be taken care of by varying capacitor 15 or by varying a resistor (which may be on the circuit providing the reference level E 2 ). Fig. 1, (not shown) depicts a prior art integrating arrangement comprising a capacitor (3) which charges through a photo-multiplier (2) to trigger a thyratron (4) which operates an exposure-terminating relay (5).
Patent GB-1444432-A (GB)
Title: Syringe
Inventor: DAWES ERNEST FREDRICK
IPC: A61M5/34
Filed: 1973-09-20
Abstract: 1444432 Syringes SGE RESEARCH PTY Ltd 20 Sept 1973 [22 Sept 1972] 44158/73 Heading F1R [Also in Division A5] A syringe comprises a barrel 12 having a main bore 13 therein a plunger guider 42 having a plunger 31 secured thereto and communicating with a needle receiving bore 30 removably holding a needle 23, the needle closely receiving a lower portion of the plunger therein, a resilient annular seal 40 between the needle and a shoulder 43 at the inner end of bore 30, through which seal the plunger is adapted to move, and a threaded, apertured nut 27 adapted to engage a threaded collar 18 on the needle end of the barrel with the needle extending through the nut aperture, a spring 28 acting between the nut and a shoulder 26 on the needle to resiliently urge the needle into engagement with the syringe. The syringe may be provided with a repetitive delivery device comprising a stop 54 adjustably clamped to the barrel, a rod 48 extending parallel to the main bore axis and passing through a hole 47 in the stop, one end of the rod releasably engaging in a hole 51 in a finger piece 52 of the plunger, and a shoulder 53 on the other end of the rod to limit outward movement of the rod relative to the stop and thereby of the plunger. Alternatively, the stop may be fixed to the barrel and the shoulder 53 may be adjustable along the rod. The entering end (61), Fig. 4, (not shown) of the needle may be of reduced diameter or a tube of smaller external diameter than the needle may be inserted and permanently secured within a terminal region of the needle to define a proboscis thereof. The upper end of the plunger may be of greater diameter than the lower end thereof. In a further embodiment, a sleeve (33), Fig. 1, (not shown), is provided secured to the finger piece and slidable along the main bore with the plunger, engagement of said tube with the inner end of said bore limiting inward movement of the plunger. A plunger guide tube (21) extends around the plunger within sleeve (33) into the needle receiving bore where it forms a shoulder (22) on which the seal seats. Graduations are marked on the barrel to indicate, in conjunction with the sleeve (33) or plunger guide 42, delivered quantities of liquid. The syringe is stated to be suitable for use in gas chromatography, for medical injections and for laboratory work.
Patent GB-1364917-A (GB)
Title: Preparation of 1h-tetrazole compounds
IPC: C07D257/04
Filed: 1971-09-22
Abstract: 1364917 1 H-Tetrazoles FUJISAWA PHARMACEUTICAL CO Ltd 22 Sept 1971 44199/71 Heading C2C 1H-Tetrazoles of Formula I: wherein each of R and R<SP>1</SP> is hydrogen; or an unsubstituted C 1-6  alkyl group; a phenyl, tolyl, xylyl, mesityl, naphthyl, biphenylyl, benzyl, tolylmethyl, xylylmethyl, phenethyl, tolylethy, α-methylbenzyl or α-methylphenethyl group; or a C 1-6  alkyl group substituted by a halogen atom or by a carboxyl, C 2-7  alkoxycarbonyl, benzyloxycarbonyl, tolylmethyloxycarbonyl, xylylmethoxycarbonyl, phenethoxycarbonyl, tolylethoxycarbonyl, α - methylbenzyloxycarbonyl, α - methylphenethoxycarbonyl, carbamoyl, hydroxy, amino, methylamino, ethylamino, propylamino, isopropylamino, dimethylamino, diethylamino, dipropylamino, methylethylamino, or C 1-4  alkoxy group, are prepared by reacting a compound of formula RNH 2 , or a salt thereof with a hydrazoic acid salt and an orthocarboxylic acid ester of formula R<SP>1</SP>C(OR<SP>2</SP>) 3 , wherein R<SP>2</SP> is a C 1-6  alkyl group. The reaction is preferably carried out in a solvent inert under the reaction conditions, e.g. acetic acid, propionic acid, an alcohol or dimethylformamide, and with heating. The examples prepare tetrazoles of Formula I wherein R and R<SP>1</SP> are respectively, phenyl and hydrogen, hydrogen and hydrogen, -CH 2 CO 2 H and -CH 3 , -CH 2 CO 2 H and hydrogen, -CH 2 CO 2 C 2 H 5  and hydrogen, and -C(CH 3 ) 2 - CH 2 OH and hydrogen.
Patent GB-1534208-A (GB)
Title: Detector for a multifrequency signal receiver
IPC: H04Q1/453
Filed: 1977-10-25
Abstract: 1534208 VF receivers INTERNATIONAL STANDARD ELECTRIC CORP 25 Oct 1977 [5 Nov 1976] 44314/77 Heading G4H [Also in Division H4] A detector for a MF receiver comprises two identical paths, each controlled by different control signals, each path receiving the composite signal EA containing the frequency to be detected and its complement -EA; a switch CT, e.g. a C-MOS switch under the control of a signal RA switches between EA and -EA at the rhythm of RA and the output of ET is filtered by a low pass filter PB with cut off frequency about zero, and rectified by a full wave rectifier RD. The output of both paths are added by an adder NB whose output 5 is high when the frequency to be detected is present and low when absent. RA1 and RA2 are square wave signals whose frequency fo is the frequency to be detected, RA1 and RA2 being out of phase by a quarter of a cycle.