baber/WOPTO huggingface dataset:
Patent GB-495552-A (GB)
Title: Process for the production of substantive polyazo dyestuffs
IPC: C09B33/26
Filed: 1938-04-19
Abstract: Substantive polyazo dyes are made by coupling diazo compounds of disazo dyes of the general formula A-N = N-M1-N = N-M2-NH2 (wherein A = the residue of a benzene or naphthalene derivative, M1 = the residue of 1-naphthylamine or 1-naphthylamine-6-and/or 7-sulphonic acid, and M2 = the residue of an aminohydroquinone dialkyl or diaralkylether) with monoazo dyes: amine --> (acid) J acid.  They yield green-blue shades on cotton.  In an example the following dye is described: aniline-o-sulphonic acid --> 1-naphthylamine-7-sulphonic acid --> aminohydroquinone dimethylether --> J acid (acid) \sM metanilic acid.  Other components specified are: aniline-2 : 5-disulphonic acid, 2-naphthylamine-4 : 8-disulphonic acid or 4-chloraniline-3-sulphonic acid; aminohydroquinone di-ethyl- or dibenzyl ether.  Specifications 15403/09, [Class 2 (iii)], 352,368, 352,878, and 432,122 are referred to.
Patent GB-742892-A (GB)
Title: Improvements in or relating to gaseous precipitation of metals from solution
IPC: C22B3/00
Filed: 1953-04-29
Abstract: Metals between cadmium and silver in the electromotive series and capable of forming gas reducible complexes with ammonia in solution are precipitated from solution containing such complex ion by treatment with a non-sulphidising reducing gas at elevated temperature and pressure, reduction being initiated in the presence of 0,5-150 ml. of metal powder per litre of the solution.  In order to produce the complex ion in solution there may be added ammonia, ammonium sulphate, sulphuric acid or a mixture of these, the solution containing an ammonium salt of the anion present.  The metal powder added is preferably the same metal as that to be precipitated and should be finer than 20 mesh, preferably finer than 150 mesh.  The solution should be agitated during reduction to keep substantially all the powder in suspension.
Patent GB-1379957-A (GB)
Title: Catapults
IPC: F16B2/24
Filed: 1972-03-14
Abstract: 1379957 Catapults P M RICHARDSON 1 March 1973 [14 March 1972] 11846/72 Heading A6S [Also in Divisions D1 and E2] An assembly, e.g. in a catapult, comprises a length of elastic material 22 and a wire or rod frame 20 to which the elastic material secured by a sleeve 32 retaining one end portion of the material and a loop around the frame and a wire clip 33 secures the sleeve to the frame. The clip 33 passes between adjacent layers of the material emerging from one end of the sleeve and the free end portions of the slip pass through holes in the frame and are bent over to secure the sleeve thereto. The sleeve is made of plastics or rubber and a second sleeve of similar material may surround the first sleeve. In a catapult, Fig. 1, lengths of elastic material 22 are connected to the frame at one end and the other end portions are passed through holes in a doubled-over portion of a pouch 23 and secured by passing through a slot in a curved plastics washer 43. The end portions of the frame 20 are retained by a screw 27 in a handle 21. The catapult is used for projecting ground bait and has a tag 24 for pulling back the pouch.
Patent GB-551220-A (GB)
Title: Improvements in or relating to the thermal deposition of metals in a vacuum
IPC: C23C14/24
Filed: 1941-09-16
Abstract: 551,220. Coating with metals. ALEXANDER. P. Sept. 16, 1941, No. 11864. [Class 82 (ii)] In a process for depositing on a support a bright film of a metal of high vaporization point or magnesium by thermal evaporation in a vacuum, a mixture of platinum or palladium and a small percentage of the coating metal is maintained continuously in the liquid form, and the support is exposed to the vapour from the mixture, the coating metal being fed into the mixture at a rate equal to the average rate of evaporation so as to maintain the percentage of the coating metal in the mixture approximately constant. A wire 6 of the coating metal is fed at an adjustable rate from a spool 7 into a bath 3 of platinum or palladium contained in a refractory vessel 4 on brackets 10 in a vacuum chamber 1 in which the support 2, e.g. of glass or paper, is mounted. A screen 8 shields the wire 6 near the bath 3. The vessel 4 is supported by lugs 9, Fig. 2, in the brackets 10 and is heated by a zig-zag coil 11 of refractory metal, such as tungsten, embedded in refractory material 12. In a modification, the cross section of the bath at the ends is larger than that at the centre and metal electrodes dip into the bath at the ends, for passage of a heating current through the bath, the metal at the ends remaining solid but becoming liquid in the narrow centre part. In a modification, pellets or powder of the coating metal from a hopper are taken by a toothed wheel from the bottom of a hopper and dropped thus at the desired feed rate through a screen into the bath. The coating metal may be one of the following :- gold, nickel, cobalt, iron, copper, aluminium, chromium and silver.
Patent GB-610885-A (GB)
Title: Improvements in or relating to scanning systems for electrical reproduction apparatus
IPC: H04N3/10
Filed: 1946-04-17
Abstract: 610,885. Television receivers; light valves. MARTIN, F. H. April 17 1946 No. 11877. [Class 40 (iii)] A scanning system, for use for example in a television system, comprises a plurality of piezo-electric crystals, each of which has a mirror attached to a free face, means being provided to apply in turn to each crystal a scanning potential to cause a modulated light beam, reflected in turn by each mirror, to be deflected along a scan line, and means being provided for removing the scanning potential, i.e. producing the " fly-back," during the interval when the other mirror or mirrors become operative, whereby the need for a rapid " fly-back " during the interval between successive scans is removed. Circuit details, Fig. 1. Each crystal 1a ... 1f is arranged at the output of a capacity potential divider 4, 5 which is charged through a constant current device '13. The crystals are biassed with potentials steadily increasing along the sequence by means of the resistor networks 15, so that when the first mirror 2 has completed its scan the second mirror comes into operation, and so on. Synchronizing pulses from the receiver are applied through the integrating network 11, 10 and cause the potential at point 9 to increase in steps. Different values of the biassing resistors 8 in the circuits of the gas discharge tubes 6 are so chosen that the initial synchronizing pulse is sufficient to cause the first tube 6 to discharge, when the corresponding mirror has just reached the end of its scan. The second synchronizing pulse, integrated with the first causes the second tube to discharge, and so on, until a certain pulse causes the last tube 6 to discharge and also causes the discharge of the tube 12 which resets the circuit to the conditions initially prevailing. In an alternative arrangement, Fig. 2 (not shown), the crystals are arranged in series and charged from a single pentode, the discharge tubes across the crystals being also arranged in series between the cathode of the pentode and earth. Optical system, Fig. 7. Light from a source 21 is passed through a light modulator 23 comprising a quartz crystal 24 which initiates a train of supersonic waves in liquid contained within the cell 23. The cell modulates the light beam by diffraction caused by the changes in refractive index set up by the supersonic waves. A mirror 26 attached to a piezoelectric crystal actuated by the potential occurring at the point 9, Fig. 1, reflects the beam in turn on to each of the line-scanning mirrors 2 operating as described with reference to Fig. 1. A further mirror 27 also actuated by a piezo-electric crystal provides frame scanning. The image formed upon the screen 28 at any one instant comprises a whole scan line corresponding to the wave then travelling down the cell 23 and the apparatus is so proportioned that' the image on the screen 28 is deflected across the screen at such a rate as to make the pattern due to the moving waves appear stationary.
Patent GB-1442733-A (GB)
Title: Process for coating shaped resin articles with metal
IPC: C08J7/043
Filed: 1974-03-18
Abstract: 1442733 Coating expoxy and polyphenylene oxide resins with metal MITSUBISHI GAS CHEMICAL CO Inc 18 March 1974 [19 March 1973] 11917/74 Headings C7B and C7F A shaped article comprising an epoxy or polyphenylene oxide resin is pre-treated with a compound of formula RO (AO)nR', where one of R and R' is C 1-4  alkyl or acyl and the other is the same or H, A is straight or branched C 2-4  alkylene and n is 1 or 2, followed by chemical etching and coating with metal in a manner known per se. The compound may be used as such in liquid or vapour form or as an aqueous solution of # 70% volume concentration and may be applied by dip or spray at 20C to boiling point for 3-120 minutes. Suitable compounds include the monomethyl ether, dimethyl ether, monopropylether and monoethylether acetate of ethylene glycol, and propylene glycol methyl ether The epoxy resin may be a glass-epoxy board and may include polyimide, polyamide-imide, polycyanate, polyisocyanate, alkyd or phenol resins. The oxide resin may be based on 2, 6 dimethyl phenylene oxide and may include polycarbonate, polyamide, ABS, AS or polystyrene resins. Suitable etchants are chromic acid in combination with H 2 SO 4 , HNO 3  or H 3 Po 4 . Metals to be plated may be Ag, Au, Cu, Ni, Sn, Cr, Pb, Co, Zn, Pt, Pb-Sn or Ni-Co and may be applied by conventional vapour deposition, electroless plating, cathodic sputtering or melt-jetting. A subsequent metal layer of the same metal may be applied electrolytically, e.g. of Cu (from an acid sulphate bath) or Au.
Patent GB-1216715-A (GB)
Title: Support members for a tiled terrace
Inventor: CAGIGAL-GUTIERREZ JESUS ALBERT
IPC: E04D11/00
Filed: 1968-03-12
Abstract: 1,216,715. Terraces. J. A. C. GUTIERREZ. 12 March, 1968 [13 March, 1967], No. 11930/ 68. Heading E1B. Support members 2 for tiles 6 each comprise three fixed projections 3 and a resilient projection 4 spring urged beyond the plane of the three fixed projections, the tiles each being laid on three fixed and one resilient projection, the resilient projection which comprises a spring and tube in a recess in the body of the support member being fixed in position by concrete cast down the tube first before the tiles are laid. The tiles may have interlocking edges. A network of drainage channels 15, 20 12, and an outlet 31 are provided beneath the tiles and are supported between the members 2 by adjustable supports 13.
Patent GB-446707-A (GB)
Title: Television receiving circuit
IPC: H03D1/16
Filed: 1935-04-18
Abstract: 446,707. Valve detecting circuits ; television. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, Berlin. April 18, 1935, No. 11940. Convention date, April 20, 1934. Addition to 435,417. [Classes 40 (iii) and 40 (v)] In a television detector according to the parent Specification in which the time constants of the grid circuit are proportioned to handle frequencies up to at least 100 k.c., the synchronizing signals which are transmitted by interruption of the carrier wave are derived from the grid circuit while the image signals are derived from the anode circuit. Fig. 1 shows a transformer 2, 3 tuned, as described in Specification 446,346 so that the primary is tuned to a frequency lower and the secondary to a frequency higher than the extreme side frequencies of the transmission feeding a push-pull detector 4. The synchronizing signals are taken from the mid-point of the secondary through a high resistance 14 the carrier frequency being removed by the condenser 15. Separation into two groups of long and short impulse signals may be by tuned transformers as described in Specification 445,428, or as shown bv the resistance-condenser combinations 16 .. 19, while amplitude selection is improved by the use of screen-grid discharge tubes. Fig. 3 shows a relaxation oscillator the condenser 29 being charged through resistance 30 the synchronizing signals being applied over condenser 35, the control and screen grids operating at fixed bias.
Patent GB-646538-A (GB)
Title: Improvements in or relating to brush-supporting construction for electric motors or the like
IPC: H01R39/41
Filed: 1948-05-01
Abstract: 646,538. Brush-holders for dynamo-electric machines. DUMORE CO. May 1, 1948, No. 11994. [Class 35] A brush-holder to be fitted in an aperture provided in the housing of a D.E.M. comprises an insulated bush 23 and an inner concentric metallic sleeve 24 within which a brush 28 slides under the pressure of a spring 31. The bush 23 has a flange 22 which engages and seats against a shoulder 19 provided in the said aperture. The brush-holder is held in position by a plug 36 screwed in the aperture. Connection to the field circuit may be done by attaching a conductor to grooves 41 provided in the lower portion of the sleeve 24.
Patent GB-601689-A (GB)
Title: Improvements in or relating to sheet registering method and apparatus
IPC: B65H9/08
Filed: 1945-05-14
Abstract: 601,689. Feeding sheets. STEVENS, A. H. (Miller Printing Machinery Co.). May 14, 1945, No. 12072. [Class 100(i)] A sheet-feeding device of the kind in which the sheets are registered by front stops 3 and by movable registering devices operated by a reciprocating rod 17 which is actuated by an oscillating bell-crank lever 13 adapted to register the sheet against either of two side guides 9, is constructed with means to ensure accurate register consisting of a friction device preferably in the form of a brush 37 which engages the sheet and moves at an angle to the advance of the sheet so as to ensure accurate engagement with both the front and side guides. The invention is described in connection with a machine of the kind described in Specification 601,373 in which reciprocating suction grippers 7, 8 moving in opposite directions co-operate to feed the sheets to the front stops 3. The machine is shown as set for registering against the lower side guide 9, and the brush 37 is mounted in a J-shaped bracket 32 arranged nearer the upper guide 9. The brush is mounted in a pivoted bracket 36, capable of movement about two axes at right angles to one another. The movement about a horizontal axis 35 is controlled by an adjustable coiled spring which is set in accordance with the thickness of the sheets, and movement about a vertical pivot 33 is controlled by a slotted arm 46 adjustably connected to the rod 17 which arm is moved counterclockwise from the position shown in dotted lines in Fig. 4 to the position shown in full lines as the sheet reaches the front stops, and so is moved substantially towards both guides and thus ensures accurate register. As the feed table 5 is inclined to the horizon the pivotal movements about the horizontal axes are controlled by cam surfaces 48 at the extremities of the arm 46, and at the end of the diagonal movement of the brush it is raised from the sheet. The brush does not rotate, and the same parts of the brush contact with the sheet during the registering operation.
Patent GB-1353797-A (GB)
Title: Controlling the relative positions of two bodies movable with respect to one another
IPC: G01N33/34
Filed: 1971-04-29
Abstract: 1353797 Fluid-pressure servosystems STIFTELSEN INSTITUTET FOR MIKROVAGSTEKNIK V1D TEKNISKA HOGSKOLAN I STOCKHOLM 29 April 1971 [29 April 1970] 12282/71 Heading G3P [Also in Divisions F2 and G1] The two resonator halves 47, 49 of a hygrometer scanning paper web 43 are carried by frames 44, 45 on chains 51, 52 and are kept aligned by a pneumatic servo-mechanism in which magnet 12 spring-mounted on sub-frame 48 cooperates with magnet 11 on frame 44 and responds to relative displacement of frames 44, 45 by establishing a differential pressure at 15, 17 effective to displace servopiston 28 and sub-frame 48 until the original alignment is restored. Where relative movement can take place in 3- dimensions, magnet 12 co-operates with three mutually-perpendicular pairs of nozzles controlling respective servomotors. Ring 13 provides magnetic shielding and electrodynamic damping.
Patent GB-1464572-A (GB)
Title: Underwear
IPC: A41B9/12
Filed: 1975-03-14
Abstract: 1464572 Pants M E SOUTAR 14 March 1975 [20 March 1974] 12290/74 Heading A3V ' Underpants are provided with a detachable crotch piece made of paper. The crotch piece is fastened at the front and rear and may be treated e.g. with anti-perspirants.
Patent GB-1206954-A (GB)
Title: Electrical testing apparatus
Inventor: BOWEN DENNIS DAWES
IPC: H02H3/04
Filed: 1967-03-16
Abstract: 1,206,954. Automatic alarm systems. D. D. BOWEN. 13 March, 1968 [16 March, 1967], No. 12341/67. Heading G4N. [Also in Divisions G1, H2 and H3] In an alarm system of the type which produces a given output in response to a change in an input exceeding a predetermined minimum duration, test pulses are repeatedly transmitted through at least part of the circuit, the test pulses being of a shorter duration than said predetermined minimum and are arranged to discharge a capacitor having a continuous charging circuit so that in event of a fault, the failure of the test pulses causes the capacitor to charge and provides a separate indication of faulty operation. As shown in Fig. 4, an alarm-operating relay 6 is arranged to be energized by the opening of contacts 21 which turns off transistor TR21, reverses the state of bistable transistors TR22, TR23, turns off TR7, and turns on TR8. A circuit 23 prevents operation by spurious short-duration pulses. The output of a multivibrator TR13, TR14 is differentiated at C1 and provides short-duration test pulses at the collector of TR15. These are injected into the base circuit of TR21, but are too short to operate relay 6 and are used to turn on TR16 which prevents capacitor C3 charging sufficiently to turn on TR17 and light the fault indicator lamp 2. " Fleeting " alarm circuit.-The bi-stable circuit comprising TR22, TR23 acts as a store to maintain the alarm condition after the cessation of any signal from contacts 22 of long enough duration to be passed by circuit 23. The alarm is reset by restoring the state of bi-stable circuit TR22, TR23 but if contacts 21 are still open (to indicate an abnormal condition) relay 6 will be re-energized and will continue to provide the alarm. The test pulses are also fed via a diode D1 to the bi-stable circuit TR22, TR23 so as to reset it immediately after it has been set by each test pulse. On receipt of a genuine " fleeting " alarm signal, TR7 is turned off and converts the multivibrator TR13, TR14 into a monostable circuit so as to inhibit the test pulses until the bi-stable circuit TR22, TR23 is reset manually. Modifications.-Fig. 3 (not shown) relates to a similar arrangement using a further multivibrator (TR9, TR10) operating flashing indicator lamps. The test pulse generator 7 and monitoring circuit 8 may be coupled sequentially by means of a uniselector to a plurality of alarm circuits.
Patent GB-1519287-A (GB)
Title: Hydraulic reservoir and filter arrangement
IPC: B01D35/02
Filed: 1977-03-24
Abstract: 1519287 Hydraulic tank filter CATERPILLAR TRACTOR CO 24 March 1977 [30 Aug 1976] 12457/77 Heading B1D A hydraulic reservoir comprises a tank 12 having within it a filter means 14 which extends between two parallel sides 16, 18 of the tank, the filter means including a tubular filter element means 20 and a surrounding tube 30 wherein the tube has an exit means (e.g. a slit) 32 and resilient compressible sealing means (e.g. gasket 44) sealing one end of the tube adjacent a side of the tank. In use liquid is passed through an assembly 24 and then outwardly through filter elements 22. A by-pass valve may be fitted.
Patent GB-835181-A (GB)
Title: Improved cutter head for the precision turning of bars, rods or tubes
Inventor: STELL JOHN ERNEST
IPC: B23B5/12
Filed: 1958-04-18
Abstract: 835,181. Hollow cutter-heads. NORTON & CO. Ltd., Sir J. F. Dec. 15, 1958 [April 18, 1958], No. 12458/58. Class 83 (3). A hollow cutter-head comprises radiallymovable slides d, each carrying a tool s or a roller-steady e, and each having micrometer adjustment means h. The slides, of T-section, are clamped downwardly by plates c<SP>1</SP>, secured by screws g, and laterally by gibs 10. Each micrometer-screw is carried in a removable bridge-piece and is positioned between an abutment k and a ball n on the slide. The tool-tip s is clamped by a bracket t<SP>1</SP> which also clamps a serrated locking-piece u against a tool-holder t. A plain adjustable steadyblock v<SP>1</SP> bears against the work beneath the tool.
Patent GB-1302442-A (GB)
IPC: B41K3/48
Filed: 1970-03-17
Abstract: 1302442 Printing machines C CARRETTI 17 March 1970 [3 July 1969] 12757/70 Heading B6D A printing machine for printing dates and numerals or successive numbers on labels comprises a rotary head 10, Fig. 1, driven by a one-revolution drive assembly 3 and co-operating with an eccentrically adjustable platen roller 23 to print the date and numbers on a card F when the latter, following alignment by a stop 32, Fig. 2, is fed into the machine past contacts 30, 31, Fig. 5, which energize the drive assembly 3. The assembly 3 is stopped after one revolution by a micro-switch 8 actuated by a cam 7 fast with a drive shaft 6 supporting the rotary head 10 which is associated with a card feeding cam 13 and a line setting cam 16. Rotation of the cam 16 relative to the cam 13 provided with a low and high lobe 13B, 13A, Fig. 5, respectively, and with a card feeding rubber ring 14, results in adjusting the line of printing relative to the leading edge of the card F, the distance of the line of printing from the feeding edge being indicated by divisions 16C on the cam 16. A printing cycle is initiated by feeding a card F between the contacts 30, 31 up to an abutment roller 19, Fig. 4, which when displaced pivotally by the high lobe of cam 16 permits the card F to be fed forwardly by the high lobe 13A of the cam 13, Fig. 5. The platen roller 23 is adjusted by a knob 25B, Fig. 2, to cope with varying thickness of the cards F and the printing head 10 co-operates by means of a cam follower 11A, with an annular cam groove 9B in a stationary cam disc 9 for consecutive indexing of printed serial numbers.
Patent GB-1500464-A (GB)
Title: Applying reagent to molecular separation media and device therefor
IPC: G01N33/48
Filed: 1976-03-29
Abstract: 1500464 Applying a reagent to molecular separation media MARINE COLLOIDS Inc 29 March 1976 12587/76 Heading G1B [Also in Divisions B1 and C7]  A device for the application of a measured quantity of water-soluble or water dispersible reagent to a water containing solid medium usable in molecular diffusion or affinity separation procedures, e.g. chromatography or electrophoresis, consists of a solid film comprising a film-forcing solid organic polymeric binder soluble in water (as defined) to the extent of at least 1 wt. per cent at 20‹C and incorporated within the binder film a measured quantity of reagent, the film being of a size and shape so that when it is placed in contact with the medium, the reagent and binder diffuse completely into the medium. Reagents which may be incorporated into the film of binder may be any of the water-soluble or water dispersible reagents employed in assay procedures, e.g. antibodies, antigens, enzymes, enzyme substrates, precipitin brightners, stains, precipitants, buffers, salt, microbiological organisms, as well as radio-actively tagged or fluorescent reagents of the foregoing types. The device may include a supporting backing of water insoluble synthetic plastics bonded to one face of the film. The binder may be selected from dextran, polyacrylamide, polyacrylic acid, polyvinyl alcohol, polyethylene glycol, polyethylene oxide, polyvinyl pyrrolidone, guar, carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose, algin, carrageenan, xanthan gum, starch, and copolymers of maleic anhydride with vinyl monomers.