baber/WOPTO huggingface dataset:
Patent GB-1489860-A (GB)
Title: 1-amino-naphthalene-7-sulphonic acid
IPC: C07C67/00
Filed: 1976-08-05
Abstract: 1489860 1 - Amino - naphthalene - 7- sulphonic acid BAYER AG 5 Aug 1976 [7 Aug 1975] 32671/76 Heading C2C 1 - Amino - naphthalene - 7 - sulphonic acid is obtained by reacting 1-chloro-naphthalene- 4,7 - disulphonic acid with NH 3  at elevated temperature in the presence of water and optionally in the presence of a catalyst. In an embodiment, 1 - amino - naphthalene - 4,7- disulphonic acid is prepared from 1-chloronaphthalene - 4,7 - disulphonic acid below 220 C. in known manner, and then optionally after intermediate isolation of 1-amino-naphthalene - 4,7 - disulphonic acid, the temperature of the reaction mixture is raised to 220-350 C. in the presence of NH 3  and water so as to give 1-amino-naphthalene-7-sulphonic acid. Specified catalysts are cuprous and cupric salts.
Patent GB-1460716-A (GB)
Title: Manufacture of multitubular sheaths for battery plates of tubular type
IPC: H01M4/76
Filed: 1973-07-10
Abstract: 1460716 Dip moulding ELECTRIC POWER STORAGE Ltd 8 Oct 1974 [10 July 1973] 32871/73 Heading B5A A machine for removing projecting mandrels 11 from multitubular sheaths 10 following their impregnation e.g. by clipping in a phenolic resin and drying, comprises means for feeding a sheath with projecting mandrels to a position between a pair of pusher bars 30 so that one end of each mandrel registers with a surface of one bar and the other end registers with a gap 32 in the other bar. Means such as pneumatic rams move the bars towards one another so that each bar pushes the ends of the mandrels it engages to cause the opposite ends to project through the gaps in the other bar and be gripped by driven pairs of rollers 36 and withdrawn from the sheath. Each bar engages alternate pairs of mandrels; each sheath consists of a unitary assembly of two layers of fabric with spaced lines of stitching producing flat pockets into which the mandrels are inserted before the dipping stage.
Patent GB-189654-A (GB)
Title: Composite foil and paper wrapper
IPC: B32B15/12
Filed: 1921-12-08
Abstract: 189,654. Reynolds, R. S. Dec. 8, 1921. Wrappers; materials, special. - Relates to wrappers for food products &c. The wrapper consists of a sheet a ot waxed paper, to one face of which is secured a smaller piece b of tinfoil, which may be imprinted as at d. The size of the foil is determined by that of the article tobe wrapped so that the overlapping parts of the wrapper consist only of waxed paper, which are sealed together to make an airtight package.
Patent GB-359233-A (GB)
Title: Improvements in and relating to electric regulating systems
IPC: H02P9/10
Filed: 1930-11-03
Abstract: 359,233. Automatic regulation. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Burnham, E. J. ; 305, Root Avenue, Scotia, New York, U.S.A.) Nov. 3, 1930, No. 33031. Convention date, Nov. 1, 1929. [Class 38 (iv).] In a regulating system, if the voltage of a generator rises above a predetermined value a relay 22 responds to effect an immediate reduction of excitation and thereafter responds to a lower value of voltage and may automatically regulate it to. that value. The invention is applicable to a, generator driven by a prime mover such as a water turbine and subject to overspeeding on removal of load. A Tirrill regulator 7 may be normally operative. On excessive voltage the relay 22 energizes an intermediate relay 34 which causes a contactor 39 to open and insert an adjustable resistance 16 into the field circuit of the generator. An auxiliary contact of the contactor 39 energizes a relay 26 which short-circuits a portion of resistance 24 in series with the relay 22 and renders it responsive to a lower voltage such as the normal generator voltage. The relay 22 thereupon acts as a regulator by periodically short-circuiting the resistance 16 to maintain the lower voltage. The relay 26 is latched open until reset by hand and closes an alarm circuit when operated. When the auxiliary switch 31 supplying the subordinate relays is fed from an exciter on the generator shaft a second auxiliary contact on the contactor 39 inserts a compensating resistance 42 in the circuit of its operating coil.
Patent GB-393945-A (GB)
Title: Improvements in or relating to lamp pendants combined with apparatus for purifying or washing air
IPC: F24F8/133
Filed: 1931-11-30
Abstract: 393,945. Lamps combined with air purifiers. YARDLEY, W. H., Briar House, Grindleford, near Sheffield. Nov. 30, 1931, No. 33067. [Class 75 (iii).] A combined lighting pendant and air purifier comprises a suspension member 4 hung from a ceiling attachment 6 and carrying an electr:c motor 8 driving a fan 9, a receptacle 2 for water or other cleaning liquid or medium, suspended from the member 4 and spaced from the fan providing a passage for the cleansed air and electric lamp fittings suspended from the receptacle. In the form shown the receptacle has a central socket 11 to accommodate a lamp 12 which is enclosed by a bowl 13 carried by a rim 14 on which the receptacle 2 is seated. The underside of the receptacle serves as a reflector. Reference has been directed by the Comptroller to Specification 14461/15, [Class 29, Cooling &c.].
Patent GB-1154565-A (GB)
Title: Improvements in or relating to Doppler Radar Equipments.
IPC: G01S13/53
Filed: 1965-08-03
Abstract: 1,154,565. Radar. SIEMENS A.G. 3 Aug., 1965 [29 Sept., 1964], No. 33254/65. Heading H4D. In a Doppler radar receiver, fed-echo signals are suppressed by a combination of a limiter and a Doppler filter. Very strong received signals are first reduced to a predetermined maximum level by the limiter. The Doppler filter transmits moving target signals from the limiter unattenuated, while fixed target signals are further attenuated to values below the indication threshold.
Patent GB-1323094-A (GB)
Title: Production of triazine derivatives
IPC: C07D/
Filed: 1970-07-09
Abstract: 1323094 Triazine derivatives AGRIPAT S A 9 July 1970 [10 July 1969] 33270/70 Heading C2C A process for the preparation of 2,4-dichloro- 6 - (C 1 -C 4 )alkylamino-s-triazines and 2-chloro- 4,6 - di - (C 1 -C 4 )alkylamino - s - triazines comprises the steps of (a) reacting cyanuric chloride, a (C 1 -C 4 )alkylamine and an alkali metal hydroxide in substantially stoichiometric proportions with at least 0À85 moles of an alkali metal hydroxide per mole of cyanuric chloride within a first reaction zone maintained at a temperature of less than about 100 C. where the feed rates and conditions are controlled in order to maintain the molar ratio of the said 2,4- dichloro - 6 - (C 1 -C 4 )alkylamino - s - triazine to cyanuric chloride at a value of at least 9:1, and in which about 80 to about 97% of the cyanuric chloride is converted to said 2,4-dichloro-6- (C 1 -C 4 )alkylamino-s-triazine; (b) adding a minor amount of alkali metal hydroxide to the reaction mixture from step (a) to form a second reaction mixture; and (c) reacting the second reaction mixture within at least a second reaction zone maintained at a temperature of less than about 100 C., where the feed rates and conditions are controlled in order to maintain the molar ratio of the 2,4-dichloro-6-(C 1 -C 4 ) alkylamino-s-triazine to cyanuric chloride at a value of up to 99:1, to form a reaction product containing from about 0À985 to about 0À995 moles of said 2,4-dichloro-6-(C 1 -C 4 )alkylamino-s-triazine and from about 0À005 to about 0À010 moles of (C 1 -C 4 )alkylamine per mole of cyanuric chloride feed; and in the preparation of 2-chloro- 4,6 - di - (C 1 -C 4 )alkylamino - s - triazine reacting the said 2,4-dichloro-6-(C 1 -C 4 )alkylaminos-triazine with a (C 1 -C 4 )alkylamine to form the required product. Examples are given for the production of the compounds.
Patent GB-1179180-A (GB)
Title: Improvements relating to Card Readers.
Inventor: COLLIER JOHN COVELL
IPC: G06K7/06
Filed: 1967-07-20
Abstract: 1,179,180. Card readers. AMP Inc. 2 July, 1968. [20 July, 1967], No. 33314/67. Heading G4M. A stationary array of contacts, e.g. studs or printed circuits, is provided on a board 3, and a corresponding array of contacts 17 is carried by a frame 16.which is biased away from board 3 by springs 22 but which may be lowered to sense a punched card by pivoting arm 23 about shaft 19 whereby arm 23 presses against a bar 26 provided on frame 16. Arm 23 may be rotated manually or by a solenoid 2. The. contacts 17 may comprise pairs of spring contacts stamped from strip metal. Guide pins 37, 38 assist in aligning an inserted card, and pins 38 have a shoulder or resilient sleeve which latches beneath the card during a reading operation and which lift the card over a shoulder in the entrance slots when frame 16 is allowed to rise. A microswitch 35 detects correct insertion of a card and is connected in circuit with solenoid 2. Switch, 35 also supplies the spring force to partially eject a card after reading.
Patent GB-175112-A (GB)
Title: Improvements in thread tensioning devices for spooling machines or the like
IPC: B65H59/22
Filed: 1920-11-25
Abstract: 175,112. Veilleux, L., Leveque, P. H., and Barnes, J. Nov. 25, 1920. Tension arrangements; creel arrangements.- A thread-tensioning device for winding or spooling machines comprises a C-shaped bracket including foldable arms 2, 3, Fig. 1, the thread passing over the forked head 13 on the arm 2 and beneath a guide 14, while it may be further guided by a groove in the head 13. It is tensioned by a resilient metal member 20, one end of which is fixed to a brake-shoe 19 acted upon by a bent wire arm 16 pivoted on the head and acted upon by an adjustable weight 18. The member 20 is bent so as to form two threadengaging points 21. The head may be provided with a recess to receive a removable wear-plate of porce:ain &c. In a modification, the thread is acted upon directly by a shoe 24, Fig. 4, having spaced thread-engaging portions 25. The arm 3 is notched to engage the supporting-rod of the spooling-machine and has an extension 6 carrying the bobbin-spindle supporting-member 7.
Patent GB-476082-A (GB)
Title: Improvements in or relating to machines for sewing on buttons
IPC: D05B65/00
Filed: 1936-02-24
Abstract: 476,082. Sewing-machines. JACKSON, L. MELLERSH-. (International Button Hole Sewing Machine Co.) Feb. 24,1936, No. 33337.. Divided out of 476,039. Drawings to Specification. [Class 112] The Specification describes the machine for sewing buttons on to work forming the subject of Specification 476,039, and claims stitchforming mechanism for producing attaching and tying stitches comprising a needle, which is laterally vibrated to pass through different holes in the button in forming attaching stitches and to pass through the same hole more than once to form a tying stitch, and looper elements which are caused to form different operations during the formation of attaching stitches and tying stitches. Specifications 476,079, 476,080, and 476,081 also are referred to.
Patent GB-1183296-A (GB)
Title: Analyzer Using an Operational Amplifier
IPC: G01N27/12
Filed: 1968-07-12
Abstract: 1,183,296. Electro-chemical analysis, Impedance measurement. SCIENTIFIC INDUSTRIES Inc. July 12, 1968 [July 24, 1967; May 10, 1968], No. 33406/68. Headings G1N and G1U. A direct reading meter for impurities (e.g. SO 2 ) in air comprises a sensor (e.g. and electrolytic cell with acidified hydrogen peroxide) which varies in impedance with the concentration of impurity blown over it; the sensor being connected to an operational amplifier with a meter at the output. As described Fig. 1 (not shown) the sensor is connected in series with an amplitude-stabilized A. C. supply, from an oscillator, to the input of the operational amplifier. Alternatively it may be connected in the feedback path. Range changing is provided by varying the supply voltage to the sensor from a potentiometer (62 Fig. 2 not shown). The meter zero is maintained by correspondingly adjusting the bias supply to the negative meter terminal, the bias being derived from a transistor (56) controlled by the supply potentiometer (62). Temperature compensation may be provided by a thermistor (42) mounted in the cell and connected in the amplifier feedback circuit.
Patent GB-406104-A (GB)
Title: Improvements in the purification of liquids by means of activated carbon
IPC: B01D37/00
Filed: 1932-11-25
Abstract: Liquids are purified by means of activated carbon which is placed as a layer in the midst of a sand filter or is mixed with the sand of a filter.  The Specification as open to inspection under Sect. 91 describes also the addition of carbon to sewage prior to treatment of the latter by the activated sludge process.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1110609-A (GB)
Title: Improvements in or relating to integrated circuit chips
Inventor: CHETWOOD NIGEL JOHN
IPC: H01L21/00
Filed: 1964-08-17
Abstract: 1,110,609. Contacting integrated circuits. SEMICONDUCTORS Ltd. 17 Aug., 1965 [17 Aug., 1964], No. 33446/64. Heading H1K. A semi-conductor chip containing an integrated circuit is provided with electrolytically deposited raised terminal regions which may be fused or thermocompression bonded to interconnecting areas on a mounting substrate. To form the terminal regions that face of a silicon chip which contains an integrated circuit is provided with an overall evaporated deposit of chromium which is then evaporatively overcoated with gold. Photo-resist etching is used to remove the gold except in those areas where contact is to be made to the chip. A photo-resist mask is provided which leaves only small portions of each gold area exposed. These portions are built up electrolytically using the chromium film as an electrode. The chromium film is now etched off except where it underlies gold, and the small raised portions of gold are used to connect the circuit to the interconnecting substrate. To prevent other portions of the integrated circuit from coming into contact with the substrate as a result of the collapse of the soft gold during bonding, the main and electrolytically raised gold portions may be replaced by electrolytically deposited palladium, the raised portions being tipped with gold to ensure good bonding. Manganese may be used instead of chromium. Gold may be etched with potassium permanganate and hydrochloric acid or with chromic acid and hydrochloric acid. Chromium may be etched with dilute hydrochloric acid and chromous chloride.
Patent GB-1249168-A (GB)
Title: Process for welding bodies of plastics material and welded joint formed by the process
Inventor: KAUFER HELMUT
IPC: B29C65/20
Filed: 1969-07-02
Abstract: 1,249,168. Seaming non-metallic sheet material. VEREINIGTE DEUTSCHE METALLWERKE A.G. 2 July, 1969 [6 July, 1968], No. 33486/69. Heading B5K. Edge portions 2 of two elements 9 of thermoplastic material, e.g. polyethylene container parts, each portion 2 being formed with a recess 4 between walls 5, 6 of which the wall 5 is longer and thicker than the wall 6, are welded together so that substantially no flash is formed on at least one side of the joint by heating the portions 2 until the material of the walls 5 is plasticized substantially throughout and forcing the walls 5 together until faces 10 of the walls 6 are in adhesive contact so that the material of the walls 5 flows into the recesses 4. In one embodiment, Figs. 1 and 4, the walls 5 are heated by being pressed into contact with a polished heating plate (11), Fig. 2 (not shown), and are pressed together after being removed from the plate (11). Plasticized parts of the walls 5 flow partly into a cavity 3 formed by the co-operating recesses 4 and partly out on that side of the joint where no recesses are provided to form a flash which can subsequently be removed by machining. In a modification, Fig. 7, the walls 5 are chamfered. Different forms of ends to be welded are described, Figs. 6, 8, 9 and 10 (all not shown). In a further modification (not shown), the walls to be heated do not supply all of the plasticized material for the joint and a filler rod is supplied and is heated together with the walls.
Patent GB-472210-A (GB)
Title: Improvements in clutches
IPC: F16D41/06
Filed: 1936-12-07
Abstract: 472,210. Free-wheel clutches. TEBALDI, A. Dec. 7, 1936, No. 33520. Convention date, Dec. 7, 1935. [Class 80 (ii)] In a free-wheel clutch which drives in one direction and permits overrunning in both directions, wedging rollers 23 are disposed between a cylindrical surface 8‹ of a driving drum 8 and the inclined ends 211 of blocks 21, which are slidable radially in guides formed in a loose ring 12, and which are urged towards the surface 8‹ by springs 24. The other ends of the blocks are adapted to coact frictionally with a cylindrical surface 1<1> of a member 1 secured to a driven shaft 2. As shown in Figs. 1 and 2, the outer ends of the blocks engage a split friction ring 22 adapted to be expanded into engagement with the surface 1<1>, while in Figs. 6 and 7, the inner ends of the blocks carry shoes 30 adapted to engage the surface 1<1>. The ring 12 pivotally carries shoes 18<11> which are normally maintained in contact with a fixed drum 6 by springs 19, each shoe having a counterweight 18<1>. The ring 12 may also carry spring-loaded detents 14, Fig. 1, which co-operate with the web of the drum 6 so as to permit the ring 12 to rotate only in one direction. With rotation of the drum 8 in one direction (anticlockwise in Fig. 2), the rollers 23 are inoperative, the blocks 21 being retracted by their springs 24 and the ring 12 being held stationary by the brake shoes 18<11>. With rotation of the drum 8 in the other direction, the rollers 23 are operative, and shaft 2 is driven. The shoes 1811 at first slip on the drum 6, but above a certain speed the counterweights 18<1> act centrifugally to draw the shoes 18<11> out of engagement. As shown in Figs. 6 and 7, the arrangement is duplicated, the outer ends of the two sets of blocks being oppositely inclined. Thus the drum 8 may drive the shaft 2 in either direction and the shaft 2 can overrun in either direction. As shown in Figs. 1 and 2, however, wedging rollers 11 are arranged between a cylindrical surface 8<1> of the drum 8 and cam grooves 29 in a part 1<11> of the member 1, so that the drum 8 mav drive the shaft 2 in either direction, while the latter can overrun only in one direction. This latter arrangement may be used in apparatus where the shaft 2 is connected through a friction clutch to a main non-reversible driving motor and the drum 8 is connected to an auxiliary slow-speed reversible motor. The arrangement shown in Figs. 6 and 7, may be used in similar apparatus where the main motor is reversible.
Patent GB-1352983-A (GB)
Title: Gripping shoe for a traction device for pulling an elongate member
IPC: B65G15/14
Filed: 1972-07-18
Abstract: 1352983 Endless conveyers for hauling tubes and cables INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS 18 July 1972 [22 July 1971] 33600/72 Heading B8A A flexible pipe, cable or tube (E) (Fig. 5, not shown) is drawn along by the action of an endless chain, each link 1 of which carries a gripping shoe 2. The latter consists of a rigid body 3 having a recess accommodating a deformable element 5, the surface of which, in engagement with the pipe (E) &c., carries gripping elements 7. Recesses 8 are provided between the inner faces of the walls of the body 3, and the sides of the element 5. On full deformation of the latter (right hand side of Fig. 3), these spaces are filled by deformation of the polyurethane of which the element 5 is formed. The surface of each element 7 may be formed with ribs (12).
Patent GB-980206-A (GB)
Title: Improvements in and relating to apparatus for studying the physical properties of particles
Inventor: HENDERSON MICHAEL IAN
IPC: G01N15/12
Filed: 1962-08-31
Abstract: 980, 206. Counting and sizing particles. COULTER ELECTRONICS Ltd. Aug. 31, 1962 [Sept. 20, 1961], No. 33604/62. Heading G1N. In an arrangement for counting and sizing particles in a liquid suspension wherein a predetermined volume of the suspension is drawn through a metering aperture to effect, in the presence of particles, a change of impedance between two electrodes 66, 74 spaced one on each side of the aperture, and the predetermined volume is drawn through by a metering device 60 including an insulative conduit 88 through which a conductive fluid 84 flows between a pair of contacts 90, 91 arranged to start and stop the counter when contacted by the conductive fluid as described in Specifications 927,346 and 865,069, an additional contact 92 is included in the conduit, to be engaged by the conductive fluid shortly after contact with the second contact whereby the aperture is short circuited to prevent the flow of current therethrough. The stop contact connections are arranged so that the preamplifier and/or subsequent stages may be described. Earthing of contact 91 by the mercury, drops the potential at the junction of resistor R18 with diode V7 and cuts off valve section V8B. Subsequent contact with contact 92 short circuits the two electrodes 66, 74 and prevents the flow of current through the aperture. Specifications 722,418 and 865,070 also are referred to.
Patent GB-813105-A (GB)
Title: Velocity modulation electron discharge tubes
Inventor: NELSON RICHARD BURTON
IPC: H01J25/06
Filed: 1955-08-10
Abstract: 813,105. Velocity modulated tubes. VARIAN ASSOCIATES. Aug. 10, 1955, No. 33622/57. Divided out of 813,103. Class 39(1). A velocity modulation tube preferably of the floating kidney type, has a cavity resonator and a waveguide communicating with the resonator and provided with a tuning plunger 73, Fig. 4, the waveguide having portions of its internal surface of the same cross sectional shape as and disposed close to the outer surface of the plunger and other portions of its inner cross-section spaced further from the plunger, as shown in Figs. 5, 6B. Preferably there are two plungers 73, Fig. 4, moved longitudinally by micrometer screws 85 through bellows 82 and have water cooling pipes 84, 84<SP>1</SP> separated by metal septum 80, and the drift tube and resonator wall are also provided with water cooling passages 65, 65<SP>1</SP>; 71 and Fig. 3 (not shown), 72. The plungers have <SP>#</SP>/ 4  chokes 77, 78 and have " Monel " (Registered Trade Mark) or copper rings 78 having a vitreous coating 79 which slides along the outer wall of the guide section 74. The guide may have cylindrical parts closely embracing the plunger and contacting vitreous coating 79 at the region of high electric field. If the cylindrical parts of the guide wall each have a circumferential extent of less than <SP>#</SP>/ 2  the guide-plunger structure will propagate only a TE 10  mode which is reflected back into the resonator by a <SP>#</SP>/ 4  plunger section. The plunger-guide design is such as to suppress the coaxial TEM mode and four TE modes which could exist for example with a plunger and guide of rectangular cross-section, Fig. 6A (not shown). Specifications 813,104 and 813,106 are referred to.
Patent GB-915531-A (GB)
Title: A circuit arrangement for the variable control of an electrical consuming device requiring direct current energy
IPC: H02P7/29
Filed: 1959-10-05
Abstract: 915,531. Transistor circuits. FRA KO KONDENSATOREN-UND APPARATEBAU G.m.b.H. Oct. 5, 1959 [Oct. 3, 1958], No. 33690/59. Class 40 (6). [Also in Groups XXXV and XXXVII] A circuit for the control of a load, particularly an electric motor by the pulse width modulation of the current, comprises a multivibrator A having capacitors T1a, T1b across which are developed a saw-tooth wave forms which are applied through a combining circuit B a variable potentiometer Wi2 to a Schmitt- Trigger circuit 6 converting the saw-tooth waveform above a threshold value determined by zener diode ZD1 into a series of rectangular impulses of the same width. These impulses modulate at F the output from a rectangular multivibrator E which may have a frequency differing from that of vibrator A. The modulated pulses are applied via a stage G to a rectifier Gr1, the half-wave pulses from which switch power transistors Tn in series with the load R. Additional windings W2a, W2b on an output transformer Tr1 provide a feed-back to stage F through capacitors C3a, C3b to improve the output waveform.